v3.23.2
Cover Page - shares
 6 Months Ended
Jun. 30, 2023
Jul. 25, 2023
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2023  
Document Transition Report false  
Securities Act File Number 814-00663  
Entity Registrant Name ARES CAPITAL CORPORATION  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 33-1089684  
Entity Address, Address Line One 245 Park Avenue  
Entity Address, Address Line Two 44th Floor  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10167  
City Area Code 212  
Local Phone Number 750-7300  
Title of 12(b) Security Common stock, par value $0.001 per share  
Trading Symbol ARCC  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   557,378,846
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q2  
Entity Central Index Key 0001287750  
v3.23.2
CONSOLIDATED BALANCE SHEET - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Investments at fair value    
Fair Value $ 21,496.5 $ 21,779.8
Cash and cash equivalents 411.0 303.0
Restricted cash 42.0 34.0
Interest receivable 181.0 176.0
Receivable for open trades 5.0 4.0
Other assets 81.0 81.0
Operating lease right-of-use asset 15.0 20.0
Total assets 22,231.0 22,398.0
LIABILITIES    
Debt 11,371.0 12,210.0
Base management fees payable 79.0 79.0
Income based fees payable 79.0 81.0
Capital gains incentive fees payable 33.0 35.0
Interest and facility fees payable 87.0 105.0
Payable to participants 42.0 34.0
Payable for open trades 6.0 22.0
Accounts payable and other liabilities 121.0 167.0
Secured borrowings 35.0 79.0
Operating lease liabilities 24.0 31.0
Total liabilities 11,877.0 12,843.0
Commitments and contingencies (Note 7)
STOCKHOLDERS’ EQUITY    
Common stock, par value $0.001 per share, 1,000 and 700 common shares authorized, respectively; 557 and 519 common shares issued and outstanding, respectively 1.0 1.0
Capital in excess of par value 10,273.0 9,556.0
Accumulated undistributed (overdistributed) earnings 80.0 (2.0)
Total stockholders’ equity 10,354.0 9,555.0
Total liabilities and stockholders’ equity $ 22,231.0 $ 22,398.0
NET ASSETS PER SHARE (in dollars per share) $ 18.58 $ 18.40
Non-controlled/non-affiliate    
Investments at fair value    
Fair Value $ 16,872.0 $ 17,296.0
Non-controlled affiliate    
Investments at fair value    
Fair Value 390.0 364.4
Controlled affiliate    
Investments at fair value    
Fair Value $ 4,234.1 $ 4,119.7
v3.23.2
CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($)
shares in Millions, $ in Millions
Jun. 30, 2023
Dec. 31, 2022
Statement of Financial Position [Abstract]    
Amortized cost of investments $ 21,685.6 $ 22,043.0
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 1,000 700
Common stock, shares issued (in shares) 557 519
Common stock, shares outstanding (in shares) 557 519
v3.23.2
CONSOLIDATED STATEMENT OF OPERATIONS - USD ($)
shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
INVESTMENT INCOME:        
PIK interest income     $ 81.0 $ 63.0
Total investment income $ 634.0 $ 479.0 1,252.0 919.0
EXPENSES:        
Interest and credit facility fees 141.0 101.0 280.0 194.0
Base management fees 79.0 75.0 158.0 148.0
Income based fees 79.0 57.0 155.0 108.0
Capital gains incentive fees 4.0 (29.0) (2.0) (27.0)
Administrative and other fees 3.0 2.0 6.0 6.0
Other general and administrative 8.0 6.0 15.0 12.0
Total expenses 314.0 212.0 612.0 441.0
NET INVESTMENT INCOME BEFORE INCOME TAXES 320.0 267.0 640.0 478.0
Income tax expense, including excise tax 6.0 10.0 8.0 23.0
NET INVESTMENT INCOME 314.0 257.0 632.0 455.0
REALIZED AND UNREALIZED GAINS (LOSSES) ON INVESTMENTS, FOREIGN CURRENCY AND OTHER TRANSACTIONS:        
Foreign currency and other transactions (13.0) 21.0 (43.0) 10.0
Net realized (losses) gains (81.0) (3.0) (131.0) 55.0
Foreign currency and other transactions 1.0 8.0 26.0 21.0
Net unrealized gains (losses) 98.0 (143.0) 108.0 (140.0)
Net realized and unrealized gains (losses) on investments, foreign currency and other transactions 17.0 (146.0) (23.0) (85.0)
Realized loss on extinguishment of debt 0.0 0.0 0.0 (48.0)
NET INCREASE IN STOCKHOLDERS’ EQUITY RESULTING FROM OPERATIONS $ 331.0 $ 111.0 $ 609.0 $ 322.0
NET INCOME PER COMMON SHARE (see Note 10)        
Basic (in usd per share) $ 0.61 $ 0.22 $ 1.13 $ 0.66
Diluted (in usd per share) $ 0.59 $ 0.22 $ 1.10 $ 0.65
WEIGHTED AVERAGE SHARES OF COMMON STOCK OUTSTANDING (see Note 10)        
Basic (in shares) 547 494 541 487
Diluted (in shares) 567 514 561 507
Non-controlled/non-affiliate        
INVESTMENT INCOME:        
Interest income (excluding payment-in-kind (“PIK”) interest income) $ 376.0 $ 244.0 $ 743.0 $ 486.0
PIK interest income 35.0 29.0 72.0 56.0
Capital structuring service fees 16.0 29.0 26.0 55.0
Dividend income 57.0 47.0 114.0 88.0
Other income 13.0 8.0 29.0 18.0
Total investment income 497.0 357.0 984.0 703.0
REALIZED AND UNREALIZED GAINS (LOSSES) ON INVESTMENTS, FOREIGN CURRENCY AND OTHER TRANSACTIONS:        
Net realized gains (losses): (68.0) (1.0) (88.0) 49.0
Net unrealized gains (losses): 66.0 (194.0) 69.0 (201.0)
Non-controlled affiliate        
INVESTMENT INCOME:        
Interest income (excluding payment-in-kind (“PIK”) interest income) 3.0 2.0 6.0 3.0
PIK interest income 1.0 1.0 2.0 2.0
Capital structuring service fees     0.0  
Dividend income 6.0 1.0 5.8 1.0
Other income     0.0  
Total investment income 10.0 4.0 14.0 6.0
REALIZED AND UNREALIZED GAINS (LOSSES) ON INVESTMENTS, FOREIGN CURRENCY AND OTHER TRANSACTIONS:        
Net realized gains (losses): 0.0 (23.0) 0.0 (23.0)
Net unrealized gains (losses): 0.0 33.0 14.4 32.0
Controlled affiliate        
INVESTMENT INCOME:        
Interest income (excluding payment-in-kind (“PIK”) interest income) 57.0 40.0 116.0 77.0
PIK interest income 4.0 3.0 7.0 5.0
Capital structuring service fees 5.0 3.0 5.0 7.0
Dividend income 60.0 71.0 124.0 118.0
Other income 1.0 1.0 2.0 3.0
Total investment income 127.0 118.0 254.0 210.0
REALIZED AND UNREALIZED GAINS (LOSSES) ON INVESTMENTS, FOREIGN CURRENCY AND OTHER TRANSACTIONS:        
Net realized gains (losses): 0.0 0.0 0.0 19.0
Net unrealized gains (losses): $ 31.0 $ 10.0 $ (1.0) $ 8.0
v3.23.2
CONSOLIDATED SCHEDULE OF INVESTMENTS - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Amortized Cost $ 21,685.6 $ 22,043.0
Fair Value $ 21,496.5 $ 21,779.8
% of Net Assets 207.61% 227.97%
Software and Services    
Amortized Cost $ 4,846.2 $ 4,950.2
Fair Value $ 4,721.4 $ 4,760.6
% of Net Assets 45.60% 49.83%
Financial Services    
Amortized Cost $ 2,615.9 $ 2,755.3
Fair Value $ 2,794.2 $ 2,890.6
% of Net Assets 26.99% 30.26%
Health Care Services    
Amortized Cost $ 2,639.8 $ 2,525.9
Fair Value $ 2,425.2 $ 2,341.9
% of Net Assets 23.42% 24.51%
Commercial and Professional Services    
Amortized Cost $ 2,168.8 $ 2,116.3
Fair Value $ 2,090.4 $ 2,077.0
% of Net Assets 20.19% 21.74%
Investment Funds and Vehicles    
Amortized Cost $ 1,310.8 $ 1,305.8
Fair Value $ 1,275.9 $ 1,296.8
% of Net Assets 12.32% 13.57%
Insurance Services    
Amortized Cost $ 1,027.7 $ 1,152.6
Fair Value $ 1,024.3 $ 1,132.8
% of Net Assets 9.89% 11.86%
Power Generation    
Amortized Cost $ 976.6 $ 942.8
Fair Value $ 1,037.6 $ 988.3
% of Net Assets 10.02% 10.34%
Consumer Durables and Apparel    
Amortized Cost $ 951.1 $ 923.9
Fair Value $ 793.1 $ 814.3
% of Net Assets 7.66% 8.52%
Consumer Services    
Amortized Cost $ 759.5 $ 859.1
Fair Value $ 804.8 $ 906.0
% of Net Assets 7.77% 9.48%
Capital Goods    
Amortized Cost $ 569.5 $ 758.3
Fair Value $ 617.3 $ 783.9
% of Net Assets 5.96% 8.21%
Media and Entertainment    
Amortized Cost $ 478.7 $ 422.3
Fair Value $ 521.4 $ 452.1
% of Net Assets 5.04% 4.73%
Retailing and Distribution    
Amortized Cost $ 431.9 $ 442.3
Fair Value $ 447.0 $ 475.2
% of Net Assets 4.32% 4.98%
Automobiles and Components    
Amortized Cost $ 440.7 $ 473.2
Fair Value $ 426.2 $ 452.6
% of Net Assets 4.12% 4.74%
Food and Beverage    
Amortized Cost $ 436.1 $ 420.4
Fair Value $ 446.6 $ 431.7
% of Net Assets 4.31% 4.52%
Energy    
Amortized Cost $ 394.0 $ 380.6
Fair Value $ 431.4 $ 425.3
% of Net Assets 4.17% 4.45%
Consumer Staples Distribution and Retail    
Amortized Cost $ 366.8 $ 320.7
Fair Value $ 409.9 $ 346.5
% of Net Assets 3.96% 3.63%
Pharmaceuticals, Biotechnology and Life Sciences    
Amortized Cost $ 284.9 $ 346.9
Fair Value $ 301.5 $ 367.5
% of Net Assets 2.91% 3.85%
Materials    
Amortized Cost $ 334.4 $ 287.3
Fair Value $ 310.6 $ 274.2
% of Net Assets 3.00% 2.87%
Technology Hardware and Equipment    
Amortized Cost $ 251.2 $ 224.8
Fair Value $ 247.6 $ 218.2
% of Net Assets 2.39% 2.28%
Household and Personal Products    
Amortized Cost $ 199.1 $ 129.4
Fair Value $ 165.1 $ 97.3
% of Net Assets 1.59% 1.02%
Transportation    
Amortized Cost $ 85.4 $ 89.5
Fair Value $ 94.3 $ 95.4
% of Net Assets 0.91% 1.00%
Telecommunication Services    
Amortized Cost $ 65.8 $ 64.1
Fair Value $ 59.3 $ 56.7
% of Net Assets 0.57% 0.59%
Education    
Amortized Cost $ 50.7 $ 151.3
Fair Value $ 51.4 $ 94.9
% of Net Assets 0.50% 0.99%
AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC    
Amortized Cost $ 242.0 $ 238.5
Fair Value 239.2 230.9
Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua    
Amortized Cost 11.1 9.8
Fair Value 15.8 13.7
APG Intermediate Holdings Corporation and APG Holdings, LLC    
Amortized Cost 23.1 23.1
Fair Value 24.0 21.8
Appriss Health, LLC and Appriss Health Intermediate Holdings, Inc.    
Amortized Cost 46.4 44.4
Fair Value 42.8 41.3
Apptio, Inc.    
Amortized Cost 18.4 17.6
Fair Value 18.4 17.6
Banyan Software Holdings, LLC and Banyan Software, LP    
Amortized Cost 6.3 26.3
Fair Value 10.1 27.6
Bobcat Purchaser, LLC and Bobcat Topco, L.P.    
Amortized Cost 13.3  
Fair Value 13.0  
Borrower R365 Holdings LLC    
Amortized Cost 17.8 17.1 [1]
Fair Value 18.1 17.3 [1]
Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc.    
Amortized Cost 128.5 124.7
Fair Value 117.3 107.6
Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P.    
Amortized Cost 371.0  
Fair Value 365.4  
Community Brands ParentCo, LLC    
Amortized Cost 15.6 15.6
Fair Value 16.7 16.8
Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P.    
Amortized Cost 121.8 120.6
Fair Value 119.9 117.4
CoreLogic, Inc. and T-VIII Celestial Co-Invest LP    
Amortized Cost 215.4 215.4
Fair Value 181.2 178.0
Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc.    
Amortized Cost 18.8 17.3
Fair Value 19.1 17.5
Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc.    
Amortized Cost 320.7 304.8
Fair Value 287.8 268.0
Datix Bidco Limited    
Amortized Cost 4.9 4.9
Fair Value 4.9 4.9
Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P.    
Amortized Cost 184.7 177.6
Fair Value 165.0 158.7
Denali Holdco LLC and Denali Apexco LP    
Amortized Cost 5.6 2.7
Fair Value 5.2 2.6
Diligent Corporation and Diligent Preferred Issuer, Inc.    
Amortized Cost 31.8 53.2
Fair Value 30.3 51.9
Drilling Info Holdings, Inc. and Titan DI Preferred Holdings, Inc.    
Amortized Cost 70.4 67.4
Fair Value 68.9 66.4
Dye & Durham Corporation    
Amortized Cost 12.6 47.2
Fair Value 12.8 45.0
Elemica Parent, Inc. & EZ Elemica Holdings, Inc.    
Amortized Cost 75.4 75.7
Fair Value 74.7 74.4
EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P.    
Amortized Cost 189.2 181.1
Fair Value 192.8 187.8
EpiServer Inc. and Episerver Sweden Holdings AB    
Amortized Cost 6.1 6.1
Fair Value 5.7 5.7
eResearch Technology, Inc. and Astorg VII Co-Invest ERT    
Amortized Cost 51.2 51.2
Fair Value 50.5 46.2
ESHA Research, LLC and RMCF VI CIV XLVIII, L.P.    
Amortized Cost 13.2 12.8
Fair Value 14.4 12.7
ExtraHop Networks, Inc.    
Amortized Cost 25.4  
Fair Value 25.4  
FM:Systems Group, LLC    
Amortized Cost 0.2 0.2
Fair Value 0.2 0.2
Forescout Technologies, Inc.    
Amortized Cost 37.9 36.1
Fair Value 38.1 36.4
Genesis Acquisition Co. and Genesis Ultimate Holding Co.    
Amortized Cost 63.6 63.6
Fair Value 64.1 63.0
GI Ranger Intermediate LLC    
Amortized Cost 13.3 12.4
Fair Value 13.0 12.1
GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC    
Amortized Cost 111.9 101.5
Fair Value 107.8 98.0
Huskies Parent, Inc., GI Insurity Parent LLC, and GI Insurity Topco LP    
Amortized Cost 186.4 178.1
Fair Value 163.5 152.9
IQN Holding Corp.    
Amortized Cost 0.9  
Fair Value 0.9  
IV Rollover Holdings, LLC    
Amortized Cost 2.0 2.0
Fair Value 2.1 2.1
Kaseya Inc. and Knockout Intermediate Holdings I Inc    
Amortized Cost 216.1 208.2
Fair Value 211.8 202.0
Majesco and Magic Topco, L.P.    
Amortized Cost 3.3 33.4
Fair Value 4.9 33.9
Mimecast Borrowerco, Inc. and Magnesium Co-Invest SCSp    
Amortized Cost 175.8 176.5
Fair Value 176.8 172.2
Ministry Brands Holdings, LLC and RCP MB Investments B, L.P.    
Amortized Cost 47.8 46.1
Fair Value 43.4 43.5
Mitchell International, Inc.    
Amortized Cost 96.9  
Fair Value 86.9  
Moonraker AcquisitionCo LLC and Moonraker HoldCo LLC    
Amortized Cost 29.5 29.6
Fair Value 29.5 29.1
MRI Software LLC    
Amortized Cost 68.3 64.5
Fair Value 66.2 62.4
PDDS HoldCo, Inc.    
Amortized Cost 11.7  
Fair Value 11.7  
PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC    
Amortized Cost 176.6 177.7
Fair Value 174.9 174.3
Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC    
Amortized Cost 13.3 19.0
Fair Value 20.8 28.3
Petvisor Holdings, LLC    
Amortized Cost 6.9  
Fair Value 6.9  
Pluralsight, Inc.    
Amortized Cost 106.4 106.4
Fair Value 103.1 104.1
ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P.    
Amortized Cost 11.5 7.1
Fair Value 11.3 6.9
Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc.    
Amortized Cost 10.3 10.3
Fair Value 18.3 17.3
Project Essential Bidco, Inc. and Project Essential Super Parent, Inc.    
Amortized Cost 70.4 68.1
Fair Value 67.6 64.9
Project Potter Buyer, LLC and Project Potter Parent, L.P.    
Amortized Cost 57.4 77.6
Fair Value 62.6 87.0
Proofpoint, Inc.    
Amortized Cost 35.4 35.3
Fair Value 35.6 35.5
QF Holdings, Inc.    
Amortized Cost 20.1 18.6
Fair Value 20.1 18.6
Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC    
Amortized Cost 23.8 12.0
Fair Value 26.4 14.1
Regent Education, Inc.    
Amortized Cost   0.0
Fair Value   0.0
RMS Holdco II, LLC & RMS Group Holdings, Inc.    
Amortized Cost 4.9 4.9
Fair Value 5.5 5.8
Smarsh Inc. and Skywalker TopCo, LLC    
Amortized Cost 18.2 18.2
Fair Value 21.1 20.5
Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp    
Amortized Cost 13.1 12.8
Fair Value 13.6 13.0
Storable, Inc. and EQT IX Co-Investment (E) SCSP    
Amortized Cost 59.3 59.3
Fair Value 60.0 58.0
Sundance Group Holdings, Inc.    
Amortized Cost 21.2 20.6
Fair Value 21.6 20.7
Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C.    
Amortized Cost 41.0 41.2
Fair Value 42.6 42.3
TCP Hawker Intermediate LLC    
Amortized Cost 40.9 41.0
Fair Value 40.9 41.0
TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P.,    
Amortized Cost   336.5
Fair Value   308.3
UKG Inc. and H&F Unite Partners, L.P.    
Amortized Cost   23.2
Fair Value   25.0
WebPT, Inc.    
Amortized Cost 0.3 48.4
Fair Value 0.3 48.4
WorkWave Intermediate II, LLC    
Amortized Cost 90.4 84.7
Fair Value 90.4 84.7
ZenDesk, Inc., Zoro TopCo, Inc. and Zoro TopCo, LP    
Amortized Cost 74.8 72.7
Fair Value 72.0 71.1
BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC    
Amortized Cost 10.5 9.9
Fair Value 9.8 9.0
Beacon Pointe Harmony, LLC    
Amortized Cost 20.4  
Fair Value 20.2  
Convera International Holdings Limited and Convera International Financial S.A R.L.    
Amortized Cost 17.7  
Fair Value 17.7  
eCapital Finance Corp.    
Amortized Cost 141.5 141.5
Fair Value 141.5 140.0
EP Wealth Advisors, LLC    
Amortized Cost 4.8 6.2
Fair Value 4.8 6.2
Ivy Hill Asset Management, L.P.    
Amortized Cost 1,967.5 2,047.5
Fair Value 2,151.0 2,201.1
Lido Advisors, LLC    
Amortized Cost 1.4  
Fair Value 1.3  
LS DE LLC and LM LSQ Investors LLC    
Amortized Cost 43.3 43.3
Fair Value 40.9 42.6
Monica Holdco (US) Inc.    
Amortized Cost 6.2 5.0
Fair Value 6.0 4.8
Priority Holdings, LLC and Priority Technology Holdings, Inc.    
Amortized Cost 76.5 73.9
Fair Value 78.4 76.7
Rialto Management Group, LLC    
Amortized Cost 0.5 0.5
Fair Value 0.5 0.5
TA/WEG Holdings, LLC    
Amortized Cost 0.3 0.4
Fair Value 0.3 0.4
The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC    
Amortized Cost 14.2 13.8
Fair Value 10.6 11.2
The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP    
Amortized Cost 40.2 39.5
Fair Value 39.6 39.8
Waverly Advisors, LLC and WAAM Topco, LLC    
Amortized Cost 2.3  
Fair Value 2.3  
Absolute Dental Group LLC and Absolute Dental Equity, LLC    
Amortized Cost 64.9 60.0
Fair Value 73.8 70.2
ADG, LLC and RC IV GEDC Investor LLC    
Amortized Cost 74.6 122.9
Fair Value 74.6 117.4
AHR Funding Holdings, Inc. And AHR Parent Holdings, L.P.    
Amortized Cost 50.1 47.2
Fair Value 49.4 46.1
AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP    
Amortized Cost 240.5 228.6
Fair Value 225.9 208.0
BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP    
Amortized Cost 6.1  
Fair Value 5.9  
CCS-CMGC Holdings, Inc.    
Amortized Cost   33.5
Fair Value   26.2
Center for Autism and Related Disorders, LLC    
Amortized Cost 36.6 19.0
Fair Value 5.5 8.0
Comprehensive EyeCare Partners, LLC    
Amortized Cost 2.2 1.1
Fair Value 2.1 1.0
Convey Health Solutions, Inc.    
Amortized Cost 2.9 2.9
Fair Value 2.7 2.8
Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC    
Amortized Cost 26.6 26.6
Fair Value 25.4 26.7
CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC    
Amortized Cost 98.5 104.7
Fair Value 106.4 111.9
Evolent Health LLC and Evolent Health, Inc.    
Amortized Cost 45.6  
Fair Value 46.2  
GHX Ultimate Parent Corporation, Commerce Parent, Inc. and Commerce Topco, LLC    
Amortized Cost 131.4 129.7
Fair Value 143.2 139.6
Global Medical Response, Inc. and GMR Buyer Corp.    
Amortized Cost 134.4 131.5
Fair Value 77.7 99.8
Hanger, Inc.    
Amortized Cost 164.7 164.8
Fair Value 164.7 160.0
HealthEdge Software, Inc.    
Amortized Cost 91.4 87.2
Fair Value 91.4 87.2
Honor Technology, Inc.    
Amortized Cost 2.5 2.5
Fair Value 2.3 2.3
JDC Healthcare Management, LLC    
Amortized Cost 35.1 35.1
Fair Value 22.2 24.7
KBHS Acquisition, LLC (d/b/a Alita Care, LLC)    
Amortized Cost 2.3  
Fair Value 2.3  
Lifescan Global Corporation    
Amortized Cost 12.7 13.9
Fair Value 10.7 10.5
Napa Management Services Corporation and ASP NAPA Holdings, LLC    
Amortized Cost 3.0 3.0
Fair Value 4.0 4.1
NMN Holdings III Corp. and NMN Holdings LP    
Amortized Cost 10.3 5.3
Fair Value 9.6 4.1
Olympia Acquisition, Inc. and Olympia TopCo, L.P.    
Amortized Cost 71.9 70.7
Fair Value 38.2 44.7
OMH-HealthEdge Holdings, LLC    
Amortized Cost 41.0 41.2
Fair Value 41.0 41.2
Pathway Vet Alliance LLC and Jedi Group Holdings LLC    
Amortized Cost 82.3 82.3
Fair Value 68.2 71.1
Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP    
Amortized Cost 85.1 85.1
Fair Value 82.3 85.3
RTI Surgical, Inc. and Pioneer Surgical Technology, Inc.    
Amortized Cost 29.7 32.3
Fair Value 29.7 32.0
SiroMed Physician Services, Inc. and SiroMed Equity Holdings, LLC    
Amortized Cost 14.0 15.1
Fair Value 10.4 11.5
SM Wellness Holdings, Inc. and SM Holdco, Inc.    
Amortized Cost 8.6 8.0
Fair Value 11.2 9.4
SOC Telemed, Inc. and PSC Spark Holdings, LP    
Amortized Cost 95.3 89.0
Fair Value 94.4 86.6
Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc.    
Amortized Cost 258.5 252.6
Fair Value 219.7 201.9
Synergy HomeCare Franchising, LLC and NP/Synergy Holdings, LLC    
Amortized Cost 13.6 13.6
Fair Value 14.2 14.1
Tempus Labs, Inc.    
Amortized Cost 92.3  
Fair Value 92.3  
U.S. Anesthesia Partners, Inc. & U.S. Anesthesia Partners Holdings, Inc.    
Amortized Cost 160.7 160.7
Fair Value 149.2 156.0
United Digestive MSO Parent, LLC and Koln Co-Invest Unblocked, LP    
Amortized Cost 15.0  
Fair Value 14.6  
VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P.    
Amortized Cost 22.3 16.8
Fair Value 24.7 17.7
Wellpath Holdings, Inc.    
Amortized Cost 37.4  
Fair Value 27.6  
WSHP FC Acquisition LLC    
Amortized Cost 113.0 87.6
Fair Value 109.1 85.5
Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC    
Amortized Cost 8.4 8.4
Fair Value 11.5 10.7
Aero Operating LLC    
Amortized Cost 37.1 37.3
Fair Value 32.3 36.2
AI Fire Buyer, Inc. and AI Fire Parent LLC    
Amortized Cost 121.6 97.8
Fair Value 123.4 98.8
Applied Technical Services, LLC    
Amortized Cost 4.0 1.7
Fair Value 4.1 1.9
Argenbright Holdings V, LLC and Amberstone Security Group Limited    
Amortized Cost 6.1 26.8
Fair Value 6.5 26.5
Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP    
Amortized Cost 79.1 79.1
Fair Value 87.0 88.6
DTI Holdco, Inc. and OPE DTI Holdings, Inc.    
Amortized Cost 7.5 7.5
Fair Value 6.4 6.3
Elevation Services Parent Holdings, LLC    
Amortized Cost 21.2 20.7
Fair Value 20.4 20.4
FlyWheel Acquireco, Inc.    
Amortized Cost 58.1  
Fair Value 57.0  
HAI Acquisition Corporation and Aloha Topco, LLC    
Amortized Cost   70.1
Fair Value   71.5
HH-Stella, Inc. and Bedrock Parent Holdings, LP    
Amortized Cost 14.2 11.1
Fair Value 13.7 10.6
ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, LLC    
Amortized Cost 16.7 13.5
Fair Value 20.2 16.0
Kellermeyer Bergensons Services, LLC    
Amortized Cost 56.4 56.7
Fair Value 49.2 51.2
KPS Global LLC and Cool Group LLC    
Amortized Cost 15.9 17.0
Fair Value 19.4 21.1
Laboratories Bidco LLC and Laboratories Topco LLC    
Amortized Cost 67.6 58.7
Fair Value 60.2 55.9
LJP Purchaser, Inc. and LJP Topco, LP    
Amortized Cost 13.9 13.7
Fair Value 13.6 13.7
Marmic Purchaser, LLC and Marmic Topco, L.P.    
Amortized Cost 4.3 3.2
Fair Value 5.3 3.5
Microstar Logistics LLC, Microstar Global Asset Management LLC, MStar Holding Corporation and Kegstar USA Inc.    
Amortized Cost 174.7 165.7
Fair Value 178.6 168.5
NAS, LLC and Nationwide Marketing Group, LLC    
Amortized Cost 10.4 10.5
Fair Value 10.4 10.5
Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P.    
Amortized Cost 457.4 449.1
Fair Value 427.3 437.2
Nest Topco Borrower Inc., KKR Nest Co-Invest L.P., and NBLY 2021-1    
Amortized Cost 128.8 128.8
Fair Value 126.0 128.1
North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC    
Amortized Cost 28.1 23.8
Fair Value 29.9 25.8
North Haven Fairway Buyer, LLC, Fairway Lawns, LLC and Command Pest Control, LLC    
Amortized Cost 13.0  
Fair Value 13.0  
North Haven Stack Buyer, LLC    
Amortized Cost 8.4 7.6
Fair Value 8.2 7.5
Petroleum Service Group LLC    
Amortized Cost 48.6 48.6
Fair Value 48.6 48.6
Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC    
Amortized Cost 75.9 72.9
Fair Value 72.4 71.5
PS Operating Company LLC and PS OP Holdings LLC (fka QC Supply, LLC)    
Amortized Cost 26.6 26.8
Fair Value 26.1 27.7
RE Community Holdings GP, LLC and RE Community Holdings, LP    
Amortized Cost 0.0 0.0
Fair Value 0.0 0.0
Registrar Intermediate, LLC and PSP Registrar Co-Investment Fund, L.P.    
Amortized Cost 5.4 5.4
Fair Value 5.3 5.3
Rodeo AcquisitionCo LLC    
Amortized Cost 18.5 18.2
Fair Value 17.6 17.3
Schill Landscaping and Lawn Care Services LLC and Landscape Parallel Partners, L.P.    
Amortized Cost 15.4 11.9
Fair Value 18.3 15.5
SSE Buyer, Inc., Supply Source Enterprises, Inc., Impact Products LLC, The Safety Zone, LLC and SSE Parent, LP    
Amortized Cost 23.2 23.2
Fair Value 8.2 14.3
Stealth Holding LLC and UCIT Online Security Inc.    
Amortized Cost 58.7 59.0
Fair Value 58.7 57.8
Systems Planning and Analysis, Inc.    
Amortized Cost 2.5  
Fair Value 2.7  
The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P.    
Amortized Cost 228.3 226.5
Fair Value 231.4 226.7
Visual Edge Technology, Inc.    
Amortized Cost 124.0 124.0
Fair Value 78.1 78.1
Wash Encore Holdings, LLC    
Amortized Cost 98.0  
Fair Value 96.1  
XIFIN, Inc. and ACP Charger Co-Invest LLC    
Amortized Cost 43.7 40.0
Fair Value 42.9 42.2
Senior Direct Lending Program, LLC    
Amortized Cost 1,288.8 1,274.1
Fair Value 1,237.1 1,248.6
AQ Sunshine, Inc.    
Amortized Cost 27.2 25.5
Fair Value 25.5 25.1
Ardonagh Midco 2 plc and Ardonagh Midco 3 plc    
Amortized Cost 258.5 242.8
Fair Value 260.1 239.3
Foundation Risk Partners, Corp.    
Amortized Cost 134.3 152.6
Fair Value 134.3 151.1
Galway Borrower LLC    
Amortized Cost   34.2
Fair Value   32.8
High Street Buyer, Inc. and High Street Holdco LLC    
Amortized Cost 202.4 181.5
Fair Value 206.6 177.7
Inszone Mid, LLC and INSZ Holdings, LLC    
Amortized Cost 23.0 19.3
Fair Value 23.1 18.8
K2 Insurance Services, LLC and K2 Holdco LP    
Amortized Cost   53.7
Fair Value   55.2
People Corporation    
Amortized Cost 58.4 67.4
Fair Value 56.0 62.2
Riser Merger Sub, Inc.    
Amortized Cost 2.8  
Fair Value 2.8  
RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc.    
Amortized Cost 32.6  
Fair Value 31.6  
SageSure Holdings, LLC & Insight Catastrophe Group, LLC    
Amortized Cost 20.3 35.5
Fair Value 23.3 35.8
THG Acquisition, LLC    
Amortized Cost 36.6 32.0
Fair Value 35.9 31.5
Ferrellgas, L.P. and Ferrelgas Partners, L.P.    
Amortized Cost 72.1 74.4
Fair Value 72.6 74.9
Heelstone Renewable Energy, LLC    
Amortized Cost 164.7 160.2
Fair Value 247.4 209.6
Opal Fuels LLC and Opal Fuels Inc.    
Amortized Cost 49.6 48.1
Fair Value 52.5 50.8
PosiGen, Inc.    
Amortized Cost 0.0 0.0
Fair Value 0.0 0.0
Sunrun Atlas Depositor 2019-2, LLC and Sunrun Atlas Holdings 2019-2, LLC    
Amortized Cost 153.2 148.0
Fair Value 141.0 136.2
Sunrun Luna Holdco 2021, LLC    
Amortized Cost 75.0 40.7
Fair Value 73.5 40.3
Sunrun Xanadu Issuer 2019-1, LLC and Sunrun Xanadu Holdings 2019-1, LLC    
Amortized Cost 74.6 72.8
Fair Value 69.4 67.6
Acrisure, LLC    
Amortized Cost 0.9  
Fair Value 1.0  
Centric Brands LLC and Centric Brands GP LLC    
Amortized Cost 85.0 83.2
Fair Value 69.1 78.5
DRS Holdings III, Inc. and DRS Holdings I, Inc.    
Amortized Cost 62.1 62.3
Fair Value 56.3 58.8
Implus Footcare, LLC    
Amortized Cost 122.9 123.1
Fair Value 104.9 110.6
Johnnie-O Inc. and Johnnie-O Holdings Inc.    
Amortized Cost 27.7 23.6
Fair Value 29.7 25.6
Rawlings Sporting Goods Company, Inc. and Easton Diamond Sports, LLC    
Amortized Cost 49.6 49.8
Fair Value 49.6 49.8
Reef Lifestyle, LLC    
Amortized Cost 71.9 61.4
Fair Value 64.8 59.6
S Toys Holdings LLC (fka The Step2 Company, LLC)    
Amortized Cost 0.0 0.0
Fair Value 0.2 0.0
SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc.    
Amortized Cost 130.7  
Fair Value 78.4  
Shock Doctor, Inc. and Shock Doctor Holdings, LLC    
Amortized Cost 14.0 11.7
Fair Value 4.5 6.0
SVP-Singer Holdings Inc. and SVP-Singer Holdings LP    
Amortized Cost 68.0 69.6
Fair Value 33.2 40.4
Totes Isotoner Corporation and Totes Ultimate Holdco, Inc.    
Amortized Cost 9.8 9.8
Fair Value 3.9 3.7
Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP    
Amortized Cost 160.4 159.2
Fair Value 158.6 157.6
American Residential Services L.L.C. and Aragorn Parent Holdings LP    
Amortized Cost 60.9 60.5
Fair Value 64.5 63.8
ATI Restoration, LLC    
Amortized Cost 92.5 45.9
Fair Value 92.5 45.9
CMG HoldCo, LLC and CMG Buyer Holdings, Inc.    
Amortized Cost 28.3 28.9
Fair Value 31.6 30.1
CST Holding Company    
Amortized Cost   12.0
Fair Value   11.6
Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC    
Amortized Cost 184.9 174.4
Fair Value 200.9 190.4
Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P.    
Amortized Cost 23.2 20.9
Fair Value 24.5 20.6
Leviathan Intermediate Holdco, LLC and Leviathan Holdings, L.P.    
Amortized Cost 18.3 18.9
Fair Value 18.0 18.5
OTG Management, LLC    
Amortized Cost 28.4 28.4
Fair Value 12.5 13.1
PestCo Holdings, LLC and PestCo, LLC    
Amortized Cost 3.4  
Fair Value 3.4  
Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings, LLC    
Amortized Cost   11.1
Fair Value   12.4
Pyramid Management Advisors, LLC and Pyramid Investors, LLC    
Amortized Cost 8.7 27.7
Fair Value 8.7 27.6
Redwood Services, LLC and Redwood Services Holdco, LLC    
Amortized Cost 22.5 21.6
Fair Value 43.7 35.0
SV-Burton Holdings, LLC & LBC Breeze Holdings LLC    
Amortized Cost   5.6
Fair Value   6.1
Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P.    
Amortized Cost 5.9 6.0
Fair Value 9.2 6.8
The Arcticom Group, LLC and AMCP Mechanical Holdings, LP    
Amortized Cost 21.1 17.5
Fair Value 22.9 20.2
YE Brands Holdings, LLC    
Amortized Cost 8.2 9.8
Fair Value 8.2 9.8
Arrowhead Holdco Company and Arrowhead GS Holdings, Inc.    
Amortized Cost 5.2 5.2
Fair Value 2.8 6.5
BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC    
Amortized Cost 1.8 3.7
Fair Value 1.9 3.7
Cadence Aerospace, LLC    
Amortized Cost 21.0 80.4
Fair Value 21.0 78.8
Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP    
Amortized Cost 32.0 33.0
Fair Value 30.8 32.2
EPS NASS Parent, Inc.    
Amortized Cost 1.4 1.0
Fair Value 1.4 1.0
ESCP PPG Holdings, LLC    
Amortized Cost 5.8 5.8
Fair Value 5.7 3.1
Harvey Tool Company, LLC    
Amortized Cost 7.0  
Fair Value 6.8  
Imaging Business Machines, L.L.C. and Scanner Holdings Corporation    
Amortized Cost 30.1 18.1
Fair Value 64.0 47.8
Kene Acquisition, Inc. and Kene Holdings, L.P.    
Amortized Cost 45.0 45.1
Fair Value 48.8 46.8
MB Aerospace Holdings II Corp.    
Amortized Cost 106.5 105.4
Fair Value 107.2 98.1
NCWS Intermediate, Inc. and NCWS Holdings LP    
Amortized Cost 117.9 110.1
Fair Value 128.3 113.8
Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP.    
Amortized Cost 29.0 29.1
Fair Value 41.3 41.8
Qnnect, LLC and Connector TopCo, LP    
Amortized Cost 20.6 20.5
Fair Value 22.2 20.2
Radius Aerospace, Inc. and Radius Aerospace Europe Limited    
Amortized Cost 0.5 0.8
Fair Value 0.5 0.8
Radwell Parent, LLC    
Amortized Cost 0.9  
Fair Value 1.0  
Aventine Intermediate LLC & Aventine Holdings II LLC    
Amortized Cost 51.2 48.8
Fair Value 43.5 45.5
Eagle Football Holdings BidCo Limited    
Amortized Cost 71.6 67.2
Fair Value 72.9 64.4
Production Resource Group, L.L.C. and PRG III, LLC    
Amortized Cost 69.6 67.9
Fair Value 111.1 97.3
Professional Fighters League, LLC and PFL MMA, Inc.    
Amortized Cost 20.0 18.7
Fair Value 20.7 18.8
Storm Investment S.a.r.l.    
Amortized Cost 88.0 88.0
Fair Value 91.8 86.0
The Teaching Company Holdings, Inc.    
Amortized Cost 1.1 1.1
Fair Value 1.3 2.5
Atlas Intermediate III, L.L.C.    
Amortized Cost 1.0 0.7
Fair Value 1.0 0.7
Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc.    
Amortized Cost 16.4 16.6
Fair Value 17.2 17.2
GPM Investments, LLC and ARKO Corp.    
Amortized Cost 21.4 21.4
Fair Value 18.2 28.0
Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC    
Amortized Cost 6.7 17.6
Fair Value 9.7 21.6
Mavis Tire Express Services Topco Corp., Metis HoldCo, Inc., and Metis TopCo, LP    
Amortized Cost 104.3 101.6
Fair Value 114.7 109.7
McKenzie Creative Brands, LLC    
Amortized Cost 90.7 91.9
Fair Value 90.7 91.9
North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC    
Amortized Cost 30.8 30.3
Fair Value 23.1 25.3
Reddy Ice LLC    
Amortized Cost 67.2 66.4
Fair Value 66.6 65.1
US Salt Investors, LLC and Emerald Lake Pearl Acquisition-A, L.P.    
Amortized Cost 27.1 27.2
Fair Value 26.1 25.8
Automotive Keys Group, LLC and Automotive Keys Investor, LLC    
Amortized Cost 11.5 11.5
Fair Value 9.0 10.6
Continental Acquisition Holdings, Inc.    
Amortized Cost 41.3 41.6
Fair Value 36.8 38.2
Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC    
Amortized Cost 83.0 88.6
Fair Value 77.7 79.6
McLaren Group Limited    
Amortized Cost   30.8
Fair Value   29.8
Sun Acquirer Corp. and Sun TopCo, LP    
Amortized Cost 65.8 65.3
Fair Value 64.4 64.9
American Seafoods Group LLC and American Seafoods Partners LLC    
Amortized Cost 7.5 7.5
Fair Value 23.3 28.3
Berner Food & Beverage, LLC    
Amortized Cost 1.1 0.5
Fair Value 1.1 0.5
Bragg Live Food Products, LLC and SPC Investment Co., L.P.    
Amortized Cost 39.6 40.4
Fair Value 38.4 39.1
CHG PPC Parent LLC & PPC CHG Blocker LLC    
Amortized Cost 97.6 97.6
Fair Value 95.8 92.8
Florida Food Products, LLC    
Amortized Cost 72.6 72.3
Fair Value 67.6 70.9
GF Parent LLC    
Amortized Cost 3.0 3.0
Fair Value 0.0 0.0
Gotham Greens Holdings, PBC    
Amortized Cost 47.5 31.9
Fair Value 47.0 31.6
KNPC HoldCo, LLC    
Amortized Cost 6.9 6.9
Fair Value 6.8 6.8
RB Holdings InterCo, LLC    
Amortized Cost 13.2 13.3
Fair Value 13.2 12.9
Teasdale Foods, Inc. and Familia Group Holdings Inc.    
Amortized Cost 76.1 75.9
Fair Value 68.5 65.3
Triton Water Holdings, Inc.    
Amortized Cost 1.1 1.1
Fair Value 1.0 1.0
Watermill Express, LLC and Watermill Express Holdings, LLC    
Amortized Cost 24.4 23.6
Fair Value 24.8 23.6
GNZ Energy Bidco Limited and Galileo Co-investment Trust I    
Amortized Cost 38.8 38.8
Fair Value 41.4 39.5
Murchison Oil and Gas, LLC and Murchison Holdings, LLC    
Amortized Cost 134.8 116.5
Fair Value 138.9 121.4
VPROP Operating, LLC and V SandCo, LLC    
Amortized Cost 75.6 75.5
Fair Value 104.1 116.1
Balrog Acquisition, Inc., Balrog Topco, Inc. and Balrog Parent, L.P.    
Amortized Cost 62.6 61.0
Fair Value 70.3 65.4
Continental Cafe, LLC and Infinity Ovation Yacht Charters, LLC    
Amortized Cost 10.4 0.8
Fair Value 10.4 0.8
DecoPac, Inc. and KCAKE Holdings Inc.    
Amortized Cost 161.2 164.8
Fair Value 159.8 161.5
FS Squared Holding Corp. and FS Squared, LLC    
Amortized Cost 11.2 11.2
Fair Value 37.5 31.3
LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P.    
Amortized Cost 49.9 45.4
Fair Value 50.2 44.3
SFE Intermediate Holdco LLC    
Amortized Cost 16.6 24.9
Fair Value 16.1 24.4
Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P.    
Amortized Cost 9.7  
Fair Value 9.7  
ZB Holdco LLC & ZB Parent LLC    
Amortized Cost 18.0 4.8
Fair Value 19.0 5.6
Alcami Corporation and ACM Holdings I, LLC    
Amortized Cost 29.7 29.0
Fair Value 29.7 28.5
Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc.    
Amortized Cost 121.7 105.7
Fair Value 121.9 105.1
Covaris Intermediate 3, LLC & Covaris Parent, LLC    
Amortized Cost 7.9 6.4
Fair Value 6.2 7.1
NMC Skincare Intermediate Holdings II, LLC    
Amortized Cost 37.6 36.7
Fair Value 35.3 35.2
North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P.    
Amortized Cost 68.3 66.5
Fair Value 88.7 89.1
TerSera Therapeutics LLC    
Amortized Cost   8.8
Fair Value   8.8
Verista, Inc.    
Amortized Cost 1.0 1.5
Fair Value 1.3 1.9
ASP-r-pac Acquisition Co LLC and ASP-r-pac Holdings LP    
Amortized Cost 19.7 19.7
Fair Value 13.7 19.3
H-Food Holdings, LLC and Matterhorn Parent, LLC    
Amortized Cost 106.2 105.8
Fair Value 93.8 92.7
Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V.    
Amortized Cost 28.3 28.5
Fair Value 30.2 28.4
Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C.    
Amortized Cost 27.3 34.0
Fair Value 30.7 39.0
Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC    
Amortized Cost 77.1 77.1
Fair Value 67.0 69.5
Precision Concepts International LLC and Precision Concepts Canada Corporation    
Amortized Cost 23.0 21.1
Fair Value 23.0 21.1
Chariot Buyer LLC    
Amortized Cost 135.3 137.9
Fair Value 131.2 129.5
ITI Holdings, Inc.    
Amortized Cost 39.7 39.9
Fair Value 38.1 39.5
PerkinElmer U.S. LLC and NM Polaris Co-Invest, L.P.    
Amortized Cost 27.4  
Fair Value 26.9  
Repairify, Inc. and Repairify Holdings, LLC    
Amortized Cost 8.6  
Fair Value 7.8  
Wildcat BuyerCo, Inc. and Wildcat Parent, LP    
Amortized Cost 20.1 21.0
Fair Value 23.9 24.1
CDI Holdings III Corp. and CDI Holdings I Corp.    
Amortized Cost   9.9
Fair Value   8.0
LifeStyles Bidco Ltd., Lifestyles Intermediate Holdco Ltd. and LifeStyles Parent, L.P.    
Amortized Cost 21.9 21.8
Fair Value 22.7 21.4
Premier Specialties, Inc. and RMCF V CIV XLIV, L.P.    
Amortized Cost 35.6 34.3
Fair Value 28.7 30.6
RD Holdco Inc.    
Amortized Cost 38.3 36.0
Fair Value 12.2 10.2
Walnut Parent, Inc.    
Amortized Cost 14.7 14.8
Fair Value 14.1 14.3
Commercial Trailer Leasing, Inc.    
Amortized Cost 44.9 53.2
Fair Value 44.9 52.8
Shur-Co Acquisition, Inc. and Shur-Co HoldCo, Inc.    
Amortized Cost 40.5 36.3
Fair Value 49.4 42.6
Aventiv Technologies, LLC and Securus Technologies Holdings, Inc.    
Amortized Cost 9.1 9.0
Fair Value 8.3 7.0
Emergency Communications Network, LLC    
Amortized Cost 56.7 55.1
Fair Value 51.0 49.7
Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc.    
Amortized Cost 41.5 38.4
Fair Value 42.2 39.2
ION Holding Corp.    
Amortized Cost   23.9
Fair Value   23.7
Revalize, Inc.    
Amortized Cost   0.8
Fair Value   0.6
VRC Companies, LLC    
Amortized Cost   5.2
Fair Value   4.7
Amynta Agency Borrower Inc. and Amynta Warranty Borrower Inc.    
Amortized Cost   16.2
Fair Value   16.2
Belfor Holdings, Inc.    
Amortized Cost   13.6
Fair Value   13.5
Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L.    
Amortized Cost   158.0
Fair Value   162.6
KeyStone Sub-debt HoldCo, LLC    
Amortized Cost   69.2
Fair Value   74.9
LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC    
Amortized Cost   36.8
Fair Value   50.1
DFS Holding Company, Inc.    
Amortized Cost   175.7
Fair Value   175.7
Abzena Holdings, Inc. and Astro Group Holdings Ltd.    
Amortized Cost   66.7
Fair Value   66.3
National College of Business and Technology Inc. & Leeds IV Advisors, Inc.    
Amortized Cost   103.7
Fair Value   $ 46.5
Benefytt Technologies, Inc.    
Amortized Cost 29.1  
Fair Value 12.1  
Patriot Growth Insurance Services, LLC    
Amortized Cost 15.7  
Fair Value 15.3  
Apex Service Partners, LLC    
Amortized Cost 56.0  
Fair Value 54.1  
Clarion Home Services Group, LLC and LBC Breeze Holdings LLC    
Amortized Cost 14.3  
Fair Value 16.7  
GS SEER Group Borrower LLC and GS SEER Group Holdings, LLC    
Amortized Cost 22.6  
Fair Value 22.1  
Modigent, LLC and OMERS PMC Investment Holdings LLC    
Amortized Cost 13.1  
Fair Value 15.5  
Northwinds Holding, Inc. and Northwinds Services Group LLC    
Amortized Cost 21.6  
Fair Value 21.1  
Badger Sportswear Acquisition, LLC    
Amortized Cost 56.8  
Fair Value 56.8  
AIM Acquisition, LLC    
Amortized Cost 0.4  
Fair Value 0.5  
Lower ACS, Inc.    
Amortized Cost 2.3  
Fair Value 2.3  
Miami Beckham United LLC    
Amortized Cost 141.3  
Fair Value 141.3  
Calyx Energy III, LLC    
Amortized Cost 55.4  
Fair Value 55.5  
Faraday Buyer, LLC    
Amortized Cost 55.7  
Fair Value 55.7  
Mr. Greens Intermediate, LLC, Florida Veg Investments LLC, MRG Texas, LLC and Restaurant Produce and Services Blocker, LLC    
Amortized Cost 19.4  
Fair Value 19.1  
Vobev, LLC and Vobev Holdings, LLC    
Amortized Cost 49.6  
Fair Value 48.2  
Caerus Midco 3 S.à r.l.    
Amortized Cost 5.4  
Fair Value 5.5  
Beacon Wellness Brands, Inc. and CDI Holdings I Corp.    
Amortized Cost 9.8  
Fair Value 7.6  
Foundation Consumer Brands, LLC    
Amortized Cost 47.7  
Fair Value 49.2  
Silk Holdings III Corp. and Silk Holdings I Corp.    
Amortized Cost 31.1  
Fair Value $ 30.6  
Investment, Identifier [Axis]: 2U, Inc., First lien senior secured loan    
Coupon 11.32% [2] 10.16% [3]
Spread 6.50% [2] 5.75% [3]
Principal $ 4.7 [4],[5],[6] $ 14.6 [1],[7],[8]
Amortized Cost 4.4 [4],[5],[6] 14.4 [1],[7],[8]
Fair Value 4.5 [4],[5],[6] 14.3 [1],[7],[8]
Investment, Identifier [Axis]: ACAS Equity Holdings Corporation    
Fair Value $ 0.4 $ 0.4
Investment, Identifier [Axis]: ACAS Equity Holdings Corporation, Common stock    
Shares/Units 589 589
Amortized Cost $ 0.4 [6] $ 0.4 [8]
Fair Value 0.4 [6] 0.4 [8]
Investment, Identifier [Axis]: ADF Capital, Inc., ADF Restaurant Group, LLC, and ARG Restaurant Holdings, Inc.    
Fair Value 0.0 0.0
Investment, Identifier [Axis]: ADF Capital, Inc., ADF Restaurant Group, LLC, and ARG Restaurant Holdings, Inc., First lien senior secured loan    
Principal 9.2 [5],[9] 8.3 [1],[10]
Amortized Cost 0.0 [5],[9] 0.0 [1],[10]
Fair Value 0.0 [5],[9] $ 0.0 [1],[10]
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, First lien senior secured revolving loan 1    
Coupon [3]   9.19%
Coupon, PIK [3]   0.52%
Spread [3]   4.75%
Principal [1],[7]   $ 9.8
Amortized Cost [1],[7]   9.8
Fair Value [1],[7]   $ 9.3
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, First lien senior secured revolving loan 2    
Coupon [3]   11.25%
Coupon, PIK [3]   0.52%
Spread [3]   3.75%
Principal [1],[7]   $ 4.3
Amortized Cost [1],[7]   4.3
Fair Value [1],[7]   $ 4.1
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, Membership units    
Shares/Units   3,000,000
Amortized Cost   $ 3.0
Fair Value   $ 0.0
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, Second lien senior secured loan    
Coupon, PIK [3]   7.19%
Spread [3]   2.80%
Principal [1],[7]   $ 130.0
Amortized Cost [1],[7]   105.8
Fair Value [1],[7]   $ 104.0
Investment, Identifier [Axis]: ADG, LLC, RC IV GEDC Investor LLC, and GEDC Equity, LLC    
Fair Value $ 74.6  
Investment, Identifier [Axis]: ADG, LLC, RC IV GEDC Investor LLC, and GEDC Equity, LLC, Class A common units    
Shares/Units 10,000,000  
Amortized Cost [5] $ 29.4  
Fair Value [5] $ 29.4  
Investment, Identifier [Axis]: ADG, LLC, RC IV GEDC Investor LLC, and GEDC Equity, LLC, First lien senior secured revolving loan    
Coupon, PIK [2] 12.50%  
Spread [2] 4.25%  
Principal [4],[5] $ 14.8  
Amortized Cost [4],[5] 14.8  
Fair Value [4],[5] $ 14.8  
Investment, Identifier [Axis]: ADG, LLC, RC IV GEDC Investor LLC, and GEDC Equity, LLC, Second lien senior secured loan    
Coupon [2] 10.00%  
Principal [5] $ 30.4  
Amortized Cost [5] 30.4  
Fair Value [5] $ 30.4  
Investment, Identifier [Axis]: AHR Funding Holdings, Inc. and AHR Parent Holdings, LP, Class B common units    
Shares/Units 100,000 100,000
Amortized Cost $ 0.1 [5] $ 0.1 [1]
Fair Value $ 0.1 [5] $ 0.1 [1]
Investment, Identifier [Axis]: AHR Funding Holdings, Inc. and AHR Parent Holdings, LP, Preferred units    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 9,900 9,900
Amortized Cost $ 10.6 [5] $ 10.2 [1]
Fair Value $ 9.9 [5] $ 10.2 [1]
Investment, Identifier [Axis]: AHR Funding Holdings, Inc. and AHR Parent Holdings, LP, Series A preferred shares    
Coupon, PIK 12.75% [2] 12.75% [3]
Shares/Units 35,000 35,000
Amortized Cost $ 39.4 [5] $ 36.9 [1]
Fair Value $ 39.4 [5] $ 35.8 [1]
Investment, Identifier [Axis]: AI Aqua Merger Sub, Inc., First lien senior secured loan    
Coupon 8.90% [2] 7.97% [3]
Spread 3.75% [2] 3.75% [3]
Principal $ 1.0 [4],[5],[11] $ 1.0 [1],[7],[12]
Amortized Cost 1.0 [4],[5],[11] 1.0 [1],[7],[12]
Fair Value $ 1.0 [4],[5],[11] $ 0.9 [1],[7],[12]
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Common units    
Shares/Units 46,990 46,990
Amortized Cost $ 4.7 [5] $ 4.7 [1]
Fair Value $ 6.5 [5] $ 5.7 [1]
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan    
Coupon [3]   10.22%
Spread [3]   6.00%
Principal [1],[7]   $ 26.8
Amortized Cost [1],[7]   26.8
Fair Value [1],[7]   $ 26.8
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 1    
Coupon [2] 11.35%  
Spread [2] 6.00%  
Principal [4],[5] $ 7.2  
Amortized Cost [4],[5] 7.2  
Fair Value [4],[5] $ 7.2  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 2    
Coupon [2] 11.06%  
Spread [2] 6.00%  
Principal [4],[5] $ 9.4  
Amortized Cost [4],[5] 9.4  
Fair Value [4],[5] $ 9.4  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 3    
Coupon [2] 11.38%  
Spread [2] 6.00%  
Principal [4],[5] $ 6.9  
Amortized Cost [4],[5] 6.9  
Fair Value [4],[5] $ 6.9  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 4    
Coupon [2] 11.17%  
Spread [2] 6.00%  
Principal [4],[5] $ 7.1  
Amortized Cost [4],[5] 7.1  
Fair Value [4],[5] $ 7.1  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 5    
Coupon [2] 11.57%  
Spread [2] 6.00%  
Principal [4],[5] $ 3.4  
Amortized Cost [4],[5] 3.4  
Fair Value [4],[5] $ 3.4  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 6    
Coupon [2] 11.12%  
Spread [2] 6.00%  
Principal [4],[5] $ 7.0  
Amortized Cost [4],[5] 7.0  
Fair Value [4],[5] $ 7.0  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 7    
Coupon [2] 11.49%  
Spread [2] 6.00%  
Principal [4],[5] $ 2.7  
Amortized Cost [4],[5] 2.7  
Fair Value [4],[5] $ 2.7  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured revolving loan    
Coupon [3]   10.61%
Spread [3]   6.00%
Principal [1],[7]   $ 0.4
Amortized Cost [1],[7]   0.4
Fair Value [1],[7]   $ 0.4
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured revolving loan 1    
Coupon [2] 11.21%  
Spread [2] 6.00%  
Principal [4],[5] $ 1.5  
Amortized Cost [4],[5] 1.5  
Fair Value [4],[5] $ 1.5  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured revolving loan 2    
Coupon [2] 11.45%  
Spread [2] 6.00%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Second lien senior secured loan 1    
Coupon, PIK 16.11% [2] 15.73% [3]
Spread 11.00% [2] 11.00% [3]
Principal $ 49.4 [4],[5] $ 45.6 [1],[7]
Amortized Cost 49.4 [4],[5] 45.6 [1],[7]
Fair Value $ 49.4 [4],[5] $ 45.6 [1],[7]
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Second lien senior secured loan 2    
Coupon, PIK 16.11% [2] 15.73% [3]
Spread 11.00% [2] 11.00% [3]
Principal $ 11.1 [4],[5] $ 10.3 [1],[7]
Amortized Cost 11.1 [4],[5] 10.3 [1],[7]
Fair Value $ 11.1 [4],[5] $ 10.3 [1],[7]
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Second lien senior secured loan 3    
Coupon, PIK 16.11% [2] 15.73% [3]
Spread 11.00% [2] 11.00% [3]
Principal $ 10.8 [4],[5] $ 10.0 [1],[7]
Amortized Cost 10.8 [4],[5] 10.0 [1],[7]
Fair Value $ 10.8 [4],[5] 10.0 [1],[7]
Investment, Identifier [Axis]: AIM Acquisition, LLC, First lien senior secured revolving loan 1    
Coupon [2] 10.26%  
Spread [2] 5.00%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: AIM Acquisition, LLC, First lien senior secured revolving loan 2    
Coupon [2] 10.36%  
Spread [2] 5.00%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] 0.1  
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC    
Fair Value $ 24.0 $ 21.8
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, Class A membership Units    
Shares/Units   9,750,000
Amortized Cost [1]   $ 9.8
Fair Value [1]   $ 8.6
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, Class A membership units    
Shares/Units 9,750,000  
Amortized Cost [5] $ 9.8  
Fair Value [5] $ 10.7  
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan    
Coupon [3]   10.36%
Spread [3]   5.25%
Principal [1],[7]   $ 13.3
Amortized Cost [1],[7]   13.3
Fair Value [1],[7]   13.2
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan 1    
Coupon [2] 10.84%  
Spread [2] 5.25%  
Principal [4],[5] $ 12.5  
Amortized Cost [4],[5] 12.5  
Fair Value [4],[5] $ 12.5  
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan 2    
Coupon [2] 10.30%  
Spread [2] 5.25%  
Principal [4],[5] $ 0.5  
Amortized Cost [4],[5] 0.5  
Fair Value [4],[5] $ 0.5  
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan 3    
Coupon [2] 10.68%  
Spread [2] 5.25%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] 0.3  
Investment, Identifier [Axis]: API Commercial Inc., API Military Inc., and API Space Intermediate, Inc., First lien senior secured loan    
Principal 7.0 [5],[9] 7.3 [1],[10]
Amortized Cost 3.0 [5],[9] 3.6 [1],[10]
Fair Value $ 3.5 [5],[9] $ 3.6 [1],[10]
Investment, Identifier [Axis]: AQ Sage Buyer, LLC, First lien senior secured loan    
Coupon 11.16% [2] 10.70% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 1.8 [4],[5],[6] $ 1.9 [1],[7],[8]
Amortized Cost 1.8 [4],[5],[6] 1.9 [1],[7],[8]
Fair Value $ 1.8 [4],[5],[6] $ 1.8 [1],[7],[8]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 1    
Coupon 11.64% [2] 10.42% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 8.5 [4],[5] $ 8.9 [1],[7]
Amortized Cost 8.5 [4],[5] 8.9 [1],[7]
Fair Value $ 7.9 [4],[5] $ 8.8 [1],[7]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 2    
Coupon 11.64% [2] 10.42% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 5.5 [4],[5] $ 8.5 [1],[7]
Amortized Cost 5.5 [4],[5] 8.5 [1],[7]
Fair Value $ 5.2 [4],[5] $ 8.3 [1],[7]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 3    
Coupon 11.64% [2] 10.42% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 0.1 [4],[5] $ 5.6 [1],[7]
Amortized Cost 0.1 [4],[5] 5.6 [1],[7]
Fair Value $ 0.1 [4],[5] $ 5.5 [1],[7]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 4    
Coupon 11.64% [2] 10.98% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 8.9 [4],[5] $ 1.0 [1],[7]
Amortized Cost 8.9 [4],[5] 1.0 [1],[7]
Fair Value $ 8.4 [4],[5] $ 1.0 [1],[7]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 5    
Coupon 11.64% [2] 10.42% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 1.0 [4],[5] $ 0.1 [1],[7]
Amortized Cost 1.0 [4],[5] 0.1 [1],[7]
Fair Value $ 0.9 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured revolving loan    
Coupon 11.65% [2] 10.42% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 3.2 [4],[5],[13] $ 1.4 [1],[7],[14]
Amortized Cost 3.2 [4],[5],[13] 1.4 [1],[7],[14]
Fair Value $ 3.0 [4],[5],[13] $ 1.4 [1],[7],[14]
Investment, Identifier [Axis]: ARES 2007-3R, Subordinated notes    
Shares/Units 20,000,000 20.0
Amortized Cost $ 0.0 [6] $ 0.0 [8]
Fair Value $ 0.1 [6] $ 0.1 [8]
Investment, Identifier [Axis]: ASP-r-pac Acquisition CO LLC and ASP-r-pac Holdings LP, Class A units    
Shares/Units 195,990 195,990
Amortized Cost $ 19.6 [5] $ 19.6 [1]
Fair Value $ 13.6 [5] $ 19.2 [1]
Investment, Identifier [Axis]: ASP-r-pac Acquisition CO LLC and ASP-r-pac Holdings LP, First lien senior secured loan    
Coupon 11.31% [2] 10.38% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 1    
Coupon 10.22% [2] 9.36% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 32.8 [4],[5] $ 33.0 [1],[7]
Amortized Cost 32.8 [4],[5] 33.0 [1],[7]
Fair Value $ 32.8 [4],[5] $ 33.0 [1],[7]
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 2    
Coupon 10.39% [2] 9.65% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 34.8 [4],[5] $ 8.2 [1],[7]
Amortized Cost 34.8 [4],[5] 8.2 [1],[7]
Fair Value $ 34.8 [4],[5] $ 8.2 [1],[7]
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 3    
Coupon [2] 10.40%  
Spread [2] 5.00%  
Principal [4],[5] $ 22.6  
Amortized Cost [4],[5] 22.6  
Fair Value [4],[5] $ 22.6  
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 4    
Coupon [2] 10.19%  
Spread [2] 5.00%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured revolving loan    
Coupon 12.25% [2] 11.50% [3]
Spread 4.00% [2] 4.00% [3]
Principal $ 2.2 [4],[5],[13] $ 4.7 [1],[7],[14]
Amortized Cost 2.2 [4],[5],[13] 4.7 [1],[7],[14]
Fair Value 2.2 [4],[5],[13] 4.7 [1],[7],[14]
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC    
Fair Value $ 73.8 $ 70.2
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, Class A common units    
Shares/Units 7,617,280 7,617,280
Amortized Cost $ 4.7 [5] $ 4.7 [1]
Fair Value $ 13.6 [5] $ 14.9 [1]
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured loan    
Coupon 14.50% [2] 13.73% [3]
Coupon, PIK 5.00% [2] 5.41% [3]
Spread 9.00% [2] 9.00% [3]
Principal $ 53.4 [4],[5] $ 52.1 [1],[7]
Amortized Cost 53.4 [4],[5] 52.1 [1],[7]
Fair Value $ 53.4 [4],[5] $ 52.1 [1],[7]
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured revolving loan 1    
Coupon 14.50% [2] 15.50% [3]
Coupon, PIK 5.00% [2] 5.00% [3]
Spread 9.00% [2] 8.00% [3]
Principal $ 6.3 [4],[5] $ 2.2 [1],[7]
Amortized Cost 6.3 [4],[5] 2.2 [1],[7]
Fair Value $ 6.3 [4],[5] $ 2.2 [1],[7]
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured revolving loan 2    
Coupon 16.25% [2] 13.77% [3]
Coupon, PIK 5.00% [2] 5.00% [3]
Spread 8.00% [2] 9.00% [3]
Principal $ 0.5 [4],[5] $ 1.0 [1],[7]
Amortized Cost 0.5 [4],[5] 1.0 [1],[7]
Fair Value $ 0.5 [4],[5] $ 1.0 [1],[7]
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., A ordinary shares    
Shares/Units   2,476,744
Amortized Cost [1],[8]   $ 5.7
Fair Value [1],[8]   $ 6.5
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., First lien senior secured loan    
Coupon [3]   14.54%
Coupon, PIK [3]   6.97%
Spread [3]   10.50%
Principal [1],[7],[8]   $ 61.0
Amortized Cost [1],[7],[8]   61.0
Fair Value [1],[7],[8]   $ 59.8
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., Ordinary A Shares    
Shares/Units 2,476,744  
Amortized Cost [5],[6] $ 5.7  
Fair Value [5],[6] $ 5.4  
Investment, Identifier [Axis]: Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC, Class A common units    
Shares/Units 236,358 236,358
Amortized Cost $ 4.3 $ 4.3
Fair Value $ 7.4 $ 6.6
Investment, Identifier [Axis]: Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC, First lien senior secured revolving loan    
Coupon 12.14% [2] 12.48% [3]
Coupon, PIK [3]   0.60%
Spread 6.75% [2] 7.75% [3]
Principal $ 4.1 [4],[5] $ 4.1 [1],[7]
Amortized Cost 4.1 [4],[5] 4.1 [1],[7]
Fair Value $ 4.1 [4],[5] $ 4.1 [1],[7]
Investment, Identifier [Axis]: Acrisure, LLC and Acrisure Finance, Inc., Senior subordinated loan    
Coupon [3]   700.00%
Principal [1],[12]   $ 0.5
Amortized Cost [1],[12]   0.5
Fair Value [1],[12]   $ 0.5
Investment, Identifier [Axis]: Acrisure, LLC, First lien senior secured loan 1    
Coupon [2] 10.82%  
Spread [2] 5.75%  
Principal [4],[5],[11] $ 0.2  
Amortized Cost [4],[5],[11] 0.2  
Fair Value [4],[5],[11] $ 0.2  
Investment, Identifier [Axis]: Acrisure, LLC, First lien senior secured loan 2    
Coupon [2] 8.69%  
Spread [2] 3.50%  
Principal [5],[11] $ 0.8  
Amortized Cost [5],[11] 0.7  
Fair Value [5],[11] $ 0.8  
Investment, Identifier [Axis]: Advarra Holdings, Inc., First lien senior secured loan    
Coupon 10.85% [2] 10.15% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 4.1 [4],[5] $ 4.1 [1],[7]
Amortized Cost 4.1 [4],[5] 4.1 [1],[7]
Fair Value $ 3.9 [4],[5] $ 3.9 [1],[7]
Investment, Identifier [Axis]: Aero Operating LLC, First lien senior secured loan 1    
Coupon 14.04% [2] 13.24% [3]
Spread 9.00% [2] 9.00% [3]
Principal $ 36.0 [4],[5] $ 36.2 [1],[7]
Amortized Cost 36.0 [4],[5] 36.2 [1],[7]
Fair Value $ 31.3 [4],[5] $ 35.1 [1],[7]
Investment, Identifier [Axis]: Aero Operating LLC, First lien senior secured loan 2    
Coupon 14.04% [2] 13.24% [3]
Spread 9.00% [2] 9.00% [3]
Principal $ 1.1 [4],[5] $ 1.1 [1],[7]
Amortized Cost 1.1 [4],[5] 1.1 [1],[7]
Fair Value $ 1.0 [4],[5] $ 1.1 [1],[7]
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan 1    
Coupon 10.20% [2] 10.64% [3]
Spread 5.50% [2] 5.75% [3]
Principal $ 63.0 [4],[5] $ 120.6 [1],[7]
Amortized Cost 63.0 [4],[5] 118.4 [1],[7]
Fair Value $ 61.8 [4],[5] $ 115.7 [1],[7]
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan 2    
Coupon 10.39% [2] 10.45% [3]
Spread 5.50% [2] 5.75% [3]
Principal $ 120.0 [4],[5] $ 63.3 [1],[7]
Amortized Cost 118.0 [4],[5] 63.3 [1],[7]
Fair Value $ 117.6 [4],[5] $ 60.8 [1],[7]
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, Senior subordinated loan    
Coupon, PIK 15.06% [2] 14.70% [3]
Spread 10.00% [2] 10.00% [3]
Principal $ 61.0 [4],[5] $ 56.8 [1],[7]
Amortized Cost 61.0 [4],[5] 56.8 [1],[7]
Fair Value $ 59.8 [4],[5] $ 54.4 [1],[7]
Investment, Identifier [Axis]: Aimbridge Acquisition Co., Inc., Second lien senior secured loan    
Coupon 12.67% [2] 11.62% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 22.5 [5] $ 22.5 [1]
Amortized Cost 22.3 [5] 22.3 [1]
Fair Value $ 21.8 [5] $ 21.8 [1]
Investment, Identifier [Axis]: Alcami Corporation and ACM Note Holdings, LLC, First lien senior secured loan    
Coupon 12.20% [2] 11.42% [3]
Spread 7.00% [2] 7.00% [3]
Principal $ 9.4 [4],[5] $ 9.5 [1],[7]
Amortized Cost 9.4 [4],[5] 9.5 [1],[7]
Fair Value $ 9.4 [4],[5] $ 9.0 [1],[7]
Investment, Identifier [Axis]: Alcami Corporation and ACM Note Holdings, LLC, Senior subordinated loan    
Coupon, PIK 8.00% [2] 8.00% [3]
Principal $ 20.3 [5] $ 19.5 [1]
Amortized Cost 20.3 [5] 19.5 [1]
Fair Value $ 20.3 [5] $ 19.5 [1]
Investment, Identifier [Axis]: Alera Group, Inc., First lien senior secured loan    
Coupon 11.20% [2] 10.42% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 60.3 [4],[5] $ 60.6 [1],[7]
Amortized Cost 60.3 [4],[5] 60.6 [1],[7]
Fair Value $ 59.7 [4],[5] $ 58.8 [1],[7]
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, First lien senior secured revolving loan 1    
Coupon 11.25% [2] 7.14% [3]
Spread 3.00% [2] 2.75% [3]
Principal $ 0.8 [5] $ 0.6 [1]
Amortized Cost 0.8 [5] 0.6 [1]
Fair Value $ 0.8 [5] $ 0.6 [1]
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, First lien senior secured revolving loan 2    
Coupon 11.25% [2] 9.25% [3]
Spread 3.00% [2] 1.75% [3]
Principal $ 0.6 [5] $ 0.3 [1]
Amortized Cost 0.6 [5] 0.3 [1]
Fair Value $ 0.6 [5] $ 0.3 [1]
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, Second lien senior secured loan    
Coupon 14.00% [2] 13.23% [3]
Spread 8.50% [2] 8.50% [3]
Principal $ 56.4 [4],[5] $ 56.4 [1],[7]
Amortized Cost 56.4 [4],[5] 56.4 [1],[7]
Fair Value $ 56.4 [4],[5] $ 56.4 [1],[7]
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, Series A preferred units    
Coupon, PIK 10.00% [2] 10.00% [3]
Shares/Units 2,531,500 2,531,500
Amortized Cost $ 3.1 [5] $ 3.2 [1]
Fair Value $ 6.7 [5] $ 6.5 [1]
Investment, Identifier [Axis]: American Seafoods Group LLC and American Seafoods Partners LLC, Class A units    
Shares/Units 77,922 77,922
Amortized Cost $ 0.1 [5] $ 0.1 [1]
Fair Value $ 0.2 [5] $ 0.3 [1]
Investment, Identifier [Axis]: American Seafoods Group LLC and American Seafoods Partners LLC, Warrant to purchase Class A units    
Shares/Units   7,422,078
Amortized Cost [1]   $ 7.4
Fair Value [1]   $ 28.0
Investment, Identifier [Axis]: American Seafoods Group LLC and American Seafoods Partners LLC, Warrant to purchase units of Class A units    
Shares/Units 7,422,078  
Amortized Cost [5] $ 7.4  
Fair Value [5] $ 23.1  
Investment, Identifier [Axis]: Amryt Pharmaceuticals, Inc., First lien senior secured loan    
Coupon [3]   10.46%
Spread [3]   6.75%
Principal [1],[7],[8]   $ 12.7
Amortized Cost [1],[7],[8]   12.7
Fair Value [1],[7],[8]   $ 12.7
Investment, Identifier [Axis]: Amynta Agency Borrower Inc. and Amynta Warranty Borrower Inc., First lien senior secured loan    
Coupon [2] 10.18%  
Spread [2] 5.00%  
Principal [5],[11] $ 1.0  
Amortized Cost [5],[11] 1.0  
Fair Value [5],[11] $ 1.0  
Investment, Identifier [Axis]: Amynta Agency Borrower Inc. and Amynta Warranty Borrower Inc., First lien senior secured loan 1    
Coupon [3]   9.58%
Spread [3]   5.00%
Principal [1]   $ 14.6
Amortized Cost [1]   13.9
Fair Value [1]   $ 14.0
Investment, Identifier [Axis]: Amynta Agency Borrower Inc. and Amynta Warranty Borrower Inc., First lien senior secured loan 2    
Coupon [3]   8.88%
Spread [3]   4.50%
Principal [1]   $ 2.3
Amortized Cost [1]   2.3
Fair Value [1]   $ 2.2
Investment, Identifier [Axis]: Anaplan, Inc., First lien senior secured loan    
Coupon 11.60% [2] 10.82% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 1.8 [4],[5] $ 1.8 [1],[7]
Amortized Cost 1.8 [4],[5] 1.8 [1],[7]
Fair Value $ 1.8 [4],[5] $ 1.7 [1],[7]
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 1    
Coupon 8.86% [2] 7.52% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 4.1 [5] $ 4.4 [1]
Amortized Cost 4.2 [5] 4.6 [1]
Fair Value $ 4.1 [5] $ 4.4 [1]
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 2    
Coupon 9.10% [2] 9.11% [3]
Spread 5.50% [2] 5.25% [3]
Principal $ 0.3 [5] $ 1.0 [1],[7]
Amortized Cost 0.3 [5] 1.0 [1],[7]
Fair Value $ 0.3 [5] $ 1.0 [1],[7]
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 3    
Coupon [2] 10.60%  
Spread [2] 5.25%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 4    
Coupon [2] 10.22%  
Spread [2] 5.25%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.7  
Fair Value [4],[5] $ 0.7  
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 5    
Coupon [2] 10.38%  
Spread [2] 5.25%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 6    
Coupon [2] 10.79%  
Spread [2] 5.25%  
Principal [4],[5] $ 1.4  
Amortized Cost [4],[5] 1.4  
Fair Value [4],[5] $ 1.4  
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, Limited partnership units    
Shares/Units 4,400,000 4,400,000
Amortized Cost $ 4.2 [5],[6] $ 4.2 [1],[8]
Fair Value 9.0 [5],[6] 8.3 [1],[8]
Investment, Identifier [Axis]: Apex Clean Energy TopCo, LLC    
Fair Value $ 168.8 $ 150.6
Investment, Identifier [Axis]: Apex Clean Energy TopCo, LLC, Class A common units    
Shares/Units 1,335,610 1,335,610
Amortized Cost $ 116.8 $ 98.7
Fair Value $ 168.8 $ 150.6
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 1    
Coupon [2] 10.70%  
Spread [2] 5.50%  
Principal [4],[5] $ 20.1  
Amortized Cost [4],[5] 19.1  
Fair Value [4],[5] $ 18.9  
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 2    
Coupon [2] 10.39%  
Spread [2] 5.50%  
Principal [4],[5] $ 8.5  
Amortized Cost [4],[5] 8.1  
Fair Value [4],[5] $ 8.0  
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 3    
Coupon [2] 10.63%  
Spread [2] 5.50%  
Principal [4],[5] $ 4.5  
Amortized Cost [4],[5] 4.3  
Fair Value [4],[5] $ 4.2  
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 4    
Coupon [2] 10.54%  
Spread [2] 5.50%  
Principal [4],[5] $ 16.8  
Amortized Cost [4],[5] 16.8  
Fair Value [4],[5] $ 15.8  
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 5    
Coupon [2] 10.76%  
Spread [2] 5.50%  
Principal [4],[5] $ 0.6  
Amortized Cost [4],[5] 0.6  
Fair Value [4],[5] $ 0.5  
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 6    
Coupon [2] 10.73%  
Spread [2] 5.50%  
Principal [4],[5] $ 7.1  
Amortized Cost [4],[5] 7.1  
Fair Value [4],[5] $ 6.7  
Investment, Identifier [Axis]: Applied Technical Services, LLC, First lien senior secured loan    
Coupon 11.14% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 1.0 [4],[5] $ 0.8 [1],[7]
Amortized Cost 1.0 [4],[5] 0.8 [1],[7]
Fair Value $ 1.0 [4],[5] $ 0.8 [1],[7]
Investment, Identifier [Axis]: Applied Technical Services, LLC, First lien senior secured revolving loan    
Coupon 13.00% [2] 12.25% [3]
Spread 4.75% [2] 4.75% [3]
Principal $ 3.1 [4],[5] $ 1.1 [1],[7]
Amortized Cost 3.0 [4],[5] 0.9 [1],[7]
Fair Value $ 3.1 [4],[5] $ 1.1 [1],[7]
Investment, Identifier [Axis]: Appriss Health, LLC and Appriss Health Intermediate Holdings, Inc., First lien senior secured loan    
Coupon 11.90% [2] 11.54% [3]
Spread 6.75% [2] 7.25% [3]
Principal $ 5.6 [4],[5] $ 5.7 [1],[7]
Amortized Cost 5.6 [4],[5] 5.7 [1],[7]
Fair Value $ 5.6 [4],[5] $ 5.7 [1],[7]
Investment, Identifier [Axis]: Appriss Health, LLC and Appriss Health Intermediate Holdings, Inc., Series A preferred shares    
Coupon, PIK 11.00% [2] 11.00% [3]
Shares/Units 32,236 32,236
Amortized Cost $ 40.8 [5] $ 38.7 [1]
Fair Value $ 37.2 [5] $ 35.6 [1]
Investment, Identifier [Axis]: Apptio, Inc., First lien senior secured loan    
Coupon 10.20% [2] 9.94% [3]
Spread 5.00% [2] 6.00% [3]
Principal $ 17.1 [4],[5] $ 15.1 [1],[7]
Amortized Cost 17.1 [4],[5] 15.1 [1],[7]
Fair Value $ 17.1 [4],[5] $ 15.1 [1],[7]
Investment, Identifier [Axis]: Apptio, Inc., First lien senior secured revolving loan    
Coupon 10.20% [2] 9.93% [3]
Spread 5.00% [2] 6.00% [3]
Principal $ 1.3 [4],[5] $ 2.5 [1],[7]
Amortized Cost 1.3 [4],[5] 2.5 [1],[7]
Fair Value $ 1.3 [4],[5] $ 2.5 [1],[7]
Investment, Identifier [Axis]: Aptean, Inc. and Aptean Acquiror Inc., First lien senior secured loan    
Coupon [2] 9.45%  
Spread [2] 4.25%  
Principal [5],[11] $ 7.1  
Amortized Cost [5],[11] 7.0  
Fair Value [5],[11] $ 7.0  
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 1    
Coupon 12.54% [2] 8.81% [3]
Spread 7.25% [2] 5.75% [3]
Principal $ 78.9 [4],[5],[6] $ 90.0 [1],[7],[8]
Amortized Cost 79.4 [4],[5],[6] 90.0 [1],[7],[8]
Fair Value $ 78.9 [4],[5],[6] $ 89.1 [1],[7],[8]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 2    
Coupon 10.07% [2] 8.19% [3]
Spread 7.25% [2] 6.50% [3]
Principal $ 7.1 [4],[5],[6] $ 66.8 [1],[7],[8]
Amortized Cost 7.5 [4],[5],[6] 64.5 [1],[7],[8]
Fair Value $ 7.1 [4],[5],[6] $ 66.8 [1],[7],[8]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 3    
Coupon 11.25% [2] 8.19% [3]
Spread 6.00% [2] 7.00% [3]
Principal $ 90.0 [4],[5],[6] $ 75.0 [1],[7],[8]
Amortized Cost 90.0 [4],[5],[6] 79.4 [1],[7],[8]
Fair Value $ 89.1 [4],[5],[6] $ 75.0 [1],[7],[8]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 4    
Coupon 9.57% [2] 8.00% [3]
Spread 6.75% [2] 7.00% [3]
Principal $ 68.1 [4],[5],[6] $ 7.0 [1],[7],[8]
Amortized Cost 64.6 [4],[5],[6] 7.5 [1],[7],[8]
Fair Value $ 68.1 [4],[5],[6] $ 7.0 [1],[7],[8]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 5    
Coupon [2] 12.22%  
Spread [2] 7.00%  
Principal [4],[5],[6] $ 15.6  
Amortized Cost [4],[5],[6] 15.6  
Fair Value [4],[5],[6] $ 15.6  
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, Senior subordinated loan    
Coupon, PIK 11.50% [2] 11.50% [3]
Principal $ 1.4 [5],[6],[11] $ 1.4 [1],[8],[12]
Amortized Cost 1.4 [5],[6],[11] 1.4 [1],[8],[12]
Fair Value $ 1.3 [5],[6],[11] $ 1.4 [1],[8],[12]
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan 1    
Coupon 12.45% [2] 11.49% [3]
Spread 7.25% [2] 7.25% [3]
Principal $ 0.1 [4],[5],[6] $ 20.9 [1],[7],[8]
Amortized Cost 0.1 [4],[5],[6] 20.9 [1],[7],[8]
Fair Value $ 0.1 [4],[5],[6] $ 20.7 [1],[7],[8]
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan 2    
Coupon 12.49% [2] 11.53% [3]
Spread 7.25% [2] 7.25% [3]
Principal $ 1.2 [4],[5],[6] $ 5.9 [1],[7],[8]
Amortized Cost 1.2 [4],[5],[6] 5.9 [1],[7],[8]
Fair Value $ 1.5 [4],[5],[6] $ 5.8 [1],[7],[8]
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan 3    
Coupon [2] 12.45%  
Spread [2] 7.25%  
Principal [4],[5],[6] $ 4.9  
Amortized Cost [4],[5],[6] 4.8  
Fair Value [4],[5],[6] $ 4.9  
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc., Common stock    
Shares/Units 5,054 5,054
Amortized Cost $ 5.1 [5] $ 5.1 [1]
Fair Value $ 2.7 [5] $ 6.4 [1]
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc., First lien senior secured loan    
Coupon 9.77% [2] 8.68% [3]
Spread 4.50% [2] 4.50% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP, Class A units    
Shares/Units 10,487,951 10,487,950
Amortized Cost $ 10.5 [5] $ 10.5 [1]
Fair Value $ 12.0 [5] $ 9.5 [1]
Investment, Identifier [Axis]: AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP, Series A preferred stock    
Coupon, PIK 10.75% [2] 10.75% [3]
Shares/Units 198,505 198,504
Amortized Cost $ 230.0 [5] $ 218.1 [1]
Fair Value $ 213.9 [5] $ 198.5 [1]
Investment, Identifier [Axis]: Athyrium Buffalo LP, Limited partnership interests    
Shares/Units 7,628,966 7,628,966
Amortized Cost $ 7.6 [5],[6] $ 7.6 [1],[8]
Fair Value $ 7.5 [5],[6] $ 7.5 [1],[8]
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 1    
Coupon 11.11% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.2 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.2 [4],[5] 0.1 [1],[7]
Fair Value $ 0.2 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 2    
Coupon 11.11% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 3    
Coupon 11.11% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 4    
Coupon 11.11% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.1 [4],[5] 0.2 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured revolving loan    
Coupon 10.94% [2] 10.10% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.5 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.5 [4],[5] 0.2 [1],[7]
Fair Value $ 0.5 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: Auctane, Inc., First lien senior secured loan    
Coupon [2] 10.94%  
Spread [2] 5.75%  
Principal [4],[5] $ 146.0  
Amortized Cost [4],[5] 146.0  
Fair Value [4],[5] $ 140.2  
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, Class A common units    
Shares/Units 5,208,159 5,208,159
Amortized Cost $ 0.0 [5] $ 0.0
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, First lien senior secured loan 1    
Coupon 11.64% [2] 10.93% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 0.1 [4],[5] $ 5.3 [1],[7]
Amortized Cost 0.1 [4],[5] 5.3 [1],[7]
Fair Value $ 0.1 [4],[5] $ 5.3 [1],[7]
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, First lien senior secured loan 2    
Coupon 11.64% [2] 9.73% [3]
Spread 6.25% [2] 5.00% [3]
Principal $ 5.2 [4],[5] $ 0.1 [1],[7]
Amortized Cost 5.2 [4],[5] 0.1 [1],[7]
Fair Value $ 5.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, Preferred units    
Coupon, PIK [3]   9.00%
Shares/Units   5,208,159
Amortized Cost [1]   $ 6.1
Fair Value [1]   $ 5.2
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, Preferred units 1    
Shares/Units 4,113,113  
Amortized Cost [5] $ 5.1  
Fair Value [5] $ 3.0  
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, Preferred units 2    
Shares/Units 1,095,046  
Amortized Cost [5] $ 1.1  
Fair Value [5] $ 0.8  
Investment, Identifier [Axis]: Avalara, Inc., First lien senior secured loan    
Coupon 12.49% [2] 11.83% [3]
Spread 7.25% [2] 7.25% [3]
Principal $ 72.3 [4],[5] $ 72.2 [1],[7]
Amortized Cost 72.3 [4],[5] 72.2 [1],[7]
Fair Value $ 72.3 [4],[5] $ 70.4 [1],[7]
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC, First lien senior secured loan    
Coupon 11.34% [2] 10.38% [3]
Coupon, PIK 4.00% [2] 4.12% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 9.8 [4],[5] $ 9.4 [1],[7]
Amortized Cost 9.8 [4],[5] 9.4 [1],[7]
Fair Value $ 9.6 [4],[5] $ 9.3 [1],[7]
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC, Senior subordinated loan    
Coupon, PIK 10.25% [2] 10.25% [3]
Principal $ 41.4 [5] $ 39.4 [1]
Amortized Cost 41.4 [5] 39.4 [1]
Fair Value $ 33.9 [5] $ 36.2 [1]
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., First lien senior secured loan    
Coupon 10.23% [2] 9.23% [3]
Spread 4.50% [2] 4.50% [3]
Principal $ 9.1 [4],[5],[11] $ 9.1 [1],[7],[12]
Amortized Cost 8.9 [4],[5],[11] 8.8 [1],[7],[12]
Fair Value $ 8.1 [4],[5],[11] $ 6.8 [1],[7],[12]
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., Second lien senior secured loan    
Coupon [3]   12.66%
Spread [3]   8.25%
Principal [1],[7]   $ 0.2
Amortized Cost [1],[7]   0.2
Fair Value [1],[7]   $ 0.2
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., Second lien senior secured loan 1    
Coupon [2] 13.98%  
Spread [2] 8.25%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., Second lien senior secured loan 2    
Coupon [2] 13.73%  
Spread [2] 8.25%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Avetta, LLC, First lien senior secured loan    
Coupon 11.02% [2] 10.16% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.2 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.2 [4],[5] 0.2 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: AxiomSL Group, Inc. and Calypso Group, Inc., First lien senior secured loan    
Coupon 10.97% [2] 10.13% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 21.2 [1],[7]
Amortized Cost 0.1 [4],[5] 20.8 [1],[7]
Fair Value $ 0.1 [4],[5] $ 21.2 [1],[7]
Investment, Identifier [Axis]: Axiomatic, LLC, Class A-1 units    
Shares/Units 500,000 500,000
Amortized Cost $ 5.0 $ 5.0
Fair Value $ 5.5 $ 5.3
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP, First lien senior secured loan    
Coupon [3]   9.73%
Spread [3]   5.00%
Principal [1],[7]   $ 6.0
Amortized Cost [1],[7]   6.1
Fair Value [1],[7]   $ 5.9
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP, First lien senior secured loan 1    
Coupon [2] 10.16%  
Spread [2] 5.00%  
Principal [4],[5] $ 3.2  
Amortized Cost [4],[5] 3.3  
Fair Value [4],[5] $ 3.2  
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP, First lien senior secured loan 2    
Coupon [2] 10.50%  
Spread [2] 5.00%  
Principal [4],[5] $ 2.8  
Amortized Cost [4],[5] 2.8  
Fair Value [4],[5] $ 2.7  
Investment, Identifier [Axis]: BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC, Common units    
Shares/Units 5,025,948 4,666,301
Amortized Cost $ 5.0 [5] $ 4.7 [1]
Fair Value $ 4.3 [5] $ 3.9 [1]
Investment, Identifier [Axis]: BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC, First lien senior secured loan    
Coupon 11.80% [2] 11.02% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 0.2 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.2 [4],[5] 0.2 [1],[7]
Fair Value $ 0.2 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC, Senior subordinated loan    
Coupon, PIK 9.30% [2] 9.30% [3]
Principal $ 5.3 [5] $ 5.0 [1]
Amortized Cost 5.3 [5] 5.0 [1]
Fair Value $ 5.3 [5] $ 4.9 [1]
Investment, Identifier [Axis]: BCTO Ignition Purchaser, Inc., First lien senior secured loan    
Coupon [2] 13.98%  
Spread [2] 9.00%  
Principal [4],[5],[6] $ 3.4  
Amortized Cost [4],[5],[6] 3.4  
Fair Value [4],[5],[6] $ 3.3  
Investment, Identifier [Axis]: BH-Sharp Holdings LP, Common units    
Shares/Units 2,950,000 2,950,000
Amortized Cost $ 3.0 [5] $ 3.0 [1]
Fair Value $ 2.7 [5] $ 2.3 [1]
Investment, Identifier [Axis]: Badger Sportswear Acquisition, Inc., Second lien senior secured loan    
Coupon [3]   13.57%
Spread [3]   9.00%
Principal [1],[7]   $ 56.8
Amortized Cost [1],[7]   56.8
Fair Value [1],[7]   $ 56.8
Investment, Identifier [Axis]: Badger Sportswear Acquisition, LLC, Second lien senior secured loan 1    
Coupon [2] 14.48%  
Spread [2] 9.00%  
Principal [4],[5] $ 28.4  
Amortized Cost [4],[5] 28.4  
Fair Value [4],[5] $ 28.4  
Investment, Identifier [Axis]: Badger Sportswear Acquisition, LLC, Second lien senior secured loan 2    
Coupon [2] 14.27%  
Spread [2] 9.00%  
Principal [4],[5] $ 28.4  
Amortized Cost [4],[5] 28.4  
Fair Value [4],[5] $ 28.4  
Investment, Identifier [Axis]: Balrog Acquisition, Inc., Balrog Topco, Inc. and Balrog Parent, L.P., Class A preferred units    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 5,484 5,484
Amortized Cost $ 6.3 [5] $ 6.1 [1]
Fair Value $ 14.0 [5] $ 10.5 [1]
Investment, Identifier [Axis]: Balrog Acquisition, Inc., Balrog Topco, Inc. and Balrog Parent, L.P., Second lien senior secured loan    
Coupon 12.53% [2] 11.73% [3]
Spread 7.00% [2] 7.00% [3]
Principal $ 29.5 [4],[5] $ 29.5 [1],[7]
Amortized Cost 29.5 [4],[5] 29.5 [1],[7]
Fair Value $ 29.5 [4],[5] $ 29.5 [1],[7]
Investment, Identifier [Axis]: Balrog Acquisition, Inc., Balrog Topco, Inc. and Balrog Parent, L.P., Series A preferred shares    
Coupon, PIK 11.00% [2] 11.00% [3]
Shares/Units 21,921 21,921
Amortized Cost $ 26.8 [5] $ 25.4 [1]
Fair Value $ 26.8 [5] $ 25.4 [1]
Investment, Identifier [Axis]: Bambino Group Holdings, LLC, Class A preferred units    
Shares/Units 1,000,000 1,000,000
Amortized Cost $ 1.0 [5] $ 1.0 [1]
Fair Value $ 0.8 [5] $ 0.9 [1]
Investment, Identifier [Axis]: Bamboo Purchaser, Inc., First lien senior secured loan    
Coupon 12.39% [2] 10.73% [3]
Spread 7.00% [2] 6.00% [3]
Principal $ 17.9 [4],[5] $ 17.9 [1],[7]
Amortized Cost 17.9 [4],[5] 17.9 [1],[7]
Fair Value $ 17.0 [4],[5] $ 17.4 [1],[7]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 1    
Coupon 12.20% [2] 11.23% [3]
Spread 7.00% [2] 6.50% [3]
Principal $ 1.0 [4],[5],[6] $ 20.3 [1],[7]
Amortized Cost 1.0 [4],[5],[6] 20.3 [1],[7]
Fair Value $ 1.0 [4],[5],[6] $ 20.3 [1],[7]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 2    
Coupon 12.20% [2] 11.23% [3]
Spread 7.00% [2] 6.50% [3]
Principal $ 0.2 [4],[5],[6] $ 1.0 [1],[7]
Amortized Cost 0.2 [4],[5],[6] 1.0 [1],[7]
Fair Value $ 0.2 [4],[5],[6] $ 1.0 [1],[7]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured revolving loan    
Coupon 10.70% [2] 10.88% [3]
Spread 5.50% [2] 6.50% [3]
Principal $ 1.0 [4],[5],[6] $ 0.9 [1],[7]
Amortized Cost 1.0 [4],[5],[6] 0.9 [1],[7]
Fair Value $ 1.0 [4],[5],[6] $ 0.9 [1],[7]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, Preferred units    
Shares/Units 120,999 120,999
Amortized Cost $ 4.1 [5],[6] $ 4.1 [1]
Fair Value $ 7.9 [5],[6] $ 5.4 [1]
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC, First lien senior secured loan    
Coupon [3]   9.39%
Spread [3]   5.25%
Principal [1],[7],[8]   $ 17.9
Amortized Cost [1],[7],[8]   17.9
Fair Value [1],[7],[8]   $ 17.7
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC, First lien senior secured loan 1    
Coupon [2] 10.85%  
Spread [2] 5.75%  
Principal [4],[5],[6] $ 20.1  
Amortized Cost [4],[5],[6] 20.1  
Fair Value [4],[5],[6] $ 19.9  
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC, First lien senior secured loan 2    
Coupon [2] 10.85%  
Spread [2] 5.75%  
Principal [4],[5],[6] $ 0.3  
Amortized Cost [4],[5],[6] 0.3  
Fair Value [4],[5],[6] $ 0.3  
Investment, Identifier [Axis]: Beacon Wellness Brands, Inc. and CDI Holdings I Corp., Common stock    
Shares/Units 6,149  
Amortized Cost [5] $ 6.1  
Fair Value [5] $ 4.0  
Investment, Identifier [Axis]: Beacon Wellness Brands, Inc. and CDI Holdings I Corp., First lien senior secured loan    
Coupon [2] 10.95%  
Spread [2] 5.75%  
Principal [4],[5] $ 3.7  
Amortized Cost [4],[5] 3.7  
Fair Value [4],[5] $ 3.6  
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan    
Coupon [2] 7.07%  
Spread [2] 3.75%  
Principal [5],[13] $ 2.6  
Amortized Cost [5],[13] 2.6  
Fair Value [5],[13] $ 2.4  
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan 1    
Coupon [3]   7.25%
Spread [3]   3.75%
Principal [1],[14]   $ 11.6
Amortized Cost [1],[14]   12.1
Fair Value [1],[14]   $ 12.1
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan 2    
Coupon [3]   10.25%
Spread [3]   2.75%
Principal [1],[14]   $ 1.4
Amortized Cost [1],[14]   1.5
Fair Value [1],[14]   $ 1.4
Investment, Identifier [Axis]: Benecon Midco II LLC and Locutus Holdco LLC, Common units    
Shares/Units 9,803,682 9,803,682
Amortized Cost $ 10.0 $ 10.0
Fair Value 28.5 $ 22.1
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan    
Coupon [3]   13.16%
Coupon, PIK [3]   9.18%
Spread [3]   8.75%
Principal [1],[7]   $ 29.1
Amortized Cost [1],[7]   29.1
Fair Value [1],[7]   $ 23.9
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan 1    
Principal [5],[9] 25.0  
Amortized Cost [5],[9] 24.0  
Fair Value [5],[9] 10.0  
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan 2    
Principal [5],[9] 5.3  
Amortized Cost [5],[9] 5.1  
Fair Value [5],[9] $ 2.1  
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, First lien senior secured revolving loan 1    
Coupon 12.75% [2] 12.00% [3]
Spread 4.50% [2] 4.50% [3]
Principal $ 0.8 [4],[5] $ 0.4 [1],[7]
Amortized Cost 0.8 [4],[5] 0.4 [1],[7]
Fair Value $ 0.8 [4],[5] $ 0.4 [1],[7]
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, First lien senior secured revolving loan 2    
Coupon 10.70% [2] 9.91% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.3 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.3 [4],[5] 0.1 [1],[7]
Fair Value 0.3 [4],[5] 0.1 [1],[7]
Investment, Identifier [Axis]: Blue Wolf Capital Fund II, L.P.    
Fair Value $ 0.1 $ 0.1
Investment, Identifier [Axis]: Blue Wolf Capital Fund II, L.P., Limited partnership interest    
Shares (as a percent) 8.50% 8.50%
Amortized Cost $ 0.0 [6],[11] $ 0.0 [8],[12]
Fair Value $ 0.1 [6],[11] $ 0.1 [8],[12]
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured loan    
Coupon [3]   10.70%
Spread [3]   6.00%
Principal [1],[7]   $ 1.0
Amortized Cost [1],[7]   1.0
Fair Value [1],[7]   $ 1.0
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured loan 1    
Coupon [2] 11.89%  
Spread [2] 6.50%  
Principal [4],[5] $ 0.8  
Amortized Cost [4],[5] 0.8  
Fair Value [4],[5] $ 0.8  
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured loan 2    
Coupon [2] 11.61%  
Spread [2] 6.50%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured revolving loan    
Coupon [3]   10.72%
Spread [3]   6.00%
Principal [1],[7]   $ 2.8
Amortized Cost [1],[7]   2.7
Fair Value [1],[7]   $ 2.7
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured revolving loan 1    
Coupon [2] 11.76%  
Spread [2] 6.50%  
Principal [4],[5] $ 0.5  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.5  
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured revolving loan 2    
Coupon [2] 11.62%  
Spread [2] 6.50%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: Bobcat Purchaser, LLC and Bobcat Topco, L.P., Class A-1 units    
Shares/Units 1,523,000  
Amortized Cost $ 1.5  
Fair Value $ 1.5  
Investment, Identifier [Axis]: Bobcat Purchaser, LLC and Bobcat Topco, L.P., First lien senior secured loan    
Coupon [2] 11.49%  
Spread [2] 6.25%  
Principal [4],[5] $ 11.8  
Amortized Cost [4],[5] 11.8  
Fair Value [4],[5] $ 11.5  
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan 1    
Coupon 8.89% [2] 8.23% [3]
Coupon, PIK 3.50% [2] 3.00% [3]
Spread 3.50% [2] 3.50% [3]
Principal $ 16.1 [4],[5] $ 15.9 [1],[7]
Amortized Cost 15.9 [4],[5] 15.7 [1],[7]
Fair Value $ 16.1 [4],[5] $ 15.9 [1],[7]
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan 2    
Coupon 8.78% [2] 8.23% [3]
Coupon, PIK 3.50% [2] 3.00% [3]
Spread 3.50% [2] 3.50% [3]
Principal $ 2.0 [4],[5] $ 1.4 [1],[7]
Amortized Cost 1.9 [4],[5] 1.4 [1],[7]
Fair Value $ 2.0 [4],[5] $ 1.4 [1],[7]
Investment, Identifier [Axis]: Bottomline Technologies, Inc. and Legal Spend Holdings, LLC, First lien senior secured loan    
Coupon [2] 10.33%  
Spread [2] 5.25%  
Principal [4],[5] $ 17.9  
Amortized Cost [4],[5] 17.9  
Fair Value [4],[5] $ 17.7  
Investment, Identifier [Axis]: Bottomline Technologies, Inc., First lien senior secured loan    
Coupon [3]   9.82%
Spread [3]   5.50%
Principal [1],[7]   $ 18.0
Amortized Cost [1],[7]   18.0
Fair Value [1],[7]   $ 17.6
Investment, Identifier [Axis]: Bowhunter Holdings, LLC, Common units    
Shares/Units 421 421
Amortized Cost $ 4.2 $ 4.2
Fair Value 0.0 0.0
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P.    
Fair Value $ 38.4 $ 39.1
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P., Common units    
Shares/Units 14,850 14,850
Amortized Cost $ 11.5 [5] $ 11.5 [1]
Fair Value $ 10.6 [5] $ 10.8 [1]
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P., First lien senior secured loan    
Coupon 12.34% [2] 11.58% [3]
Spread 7.00% [2] 7.00% [3]
Principal $ 28.1 [4],[5] $ 28.9 [1],[7]
Amortized Cost 28.1 [4],[5] 28.9 [1],[7]
Fair Value $ 27.8 [4],[5] $ 28.3 [1],[7]
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, First lien senior secured loan    
Coupon 10.45% [2] 9.67% [3]
Spread 5.25% [2] 5.25% [3]
Principal $ 22.2 [4],[5],[11] $ 4.8 [1],[7],[12]
Amortized Cost 20.7 [4],[5],[11] 4.4 [1],[7],[12]
Fair Value $ 21.0 [4],[5],[11] $ 4.3 [1],[7],[12]
Investment, Identifier [Axis]: Businessolver.com, Inc., First lien senior secured loan    
Coupon 10.84% [2] 9.67% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.4 [4],[5] $ 14.7 [1],[7]
Amortized Cost 0.4 [4],[5] 14.7 [1],[7]
Fair Value $ 0.4 [4],[5] $ 14.5 [1],[7]
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc., First lien senior secured loan    
Coupon [3]   9.91%
Spread [3]   5.50%
Principal [1],[12]   $ 33.6
Amortized Cost [1],[12]   33.5
Fair Value [1],[12]   26.2
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc., First lien senior secured revolving loan    
Principal [15]   0.0
Amortized Cost [15]   0.0
Fair Value [15]   $ 0.0
Investment, Identifier [Axis]: CDI Holdings III Corp. and CDI Holdings I Corp., Common stock    
Shares/Units   6,149
Amortized Cost [1]   $ 6.1
Fair Value [1]   $ 4.4
Investment, Identifier [Axis]: CDI Holdings III Corp. and CDI Holdings I Corp., First lien senior secured loan    
Coupon [3]   10.13%
Spread [3]   5.75%
Principal [1],[7]   $ 3.8
Amortized Cost [1],[7]   3.8
Fair Value [1],[7]   $ 3.6
Investment, Identifier [Axis]: CHG PPC Parent LLC & PPC CHG Blocker LLC, Common units    
Shares/Units 59 59
Amortized Cost $ 3.0 [5] $ 3.0 [1]
Fair Value $ 3.1 [5] $ 2.9 [1]
Investment, Identifier [Axis]: CHG PPC Parent LLC & PPC CHG Blocker LLC, Second lien senior secured loan    
Coupon 11.97% [2] 11.13% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 94.6 [4],[5] $ 94.6 [1],[7]
Amortized Cost 94.6 [4],[5] 94.6 [1],[7]
Fair Value $ 92.7 [4],[5] $ 89.9 [1],[7]
Investment, Identifier [Axis]: CI US Holdings Inc., Series A preferred stock    
Shares/Units 41,427  
Amortized Cost [5] $ 41.4  
Fair Value [5] $ 41.4  
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., Common stock    
Shares/Units 290 289
Amortized Cost $ 2.9 [5] $ 2.9 [1]
Fair Value $ 6.2 [5] $ 4.6 [1]
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured loan 1    
Coupon 10.12% [2] 9.52% [3]
Spread 5.00% [2] 5.25% [3]
Principal $ 21.7 [4],[5] $ 21.8 [1],[7]
Amortized Cost 21.7 [4],[5] 21.8 [1],[7]
Fair Value $ 21.7 [4],[5] $ 21.4 [1],[7]
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured loan 2    
Coupon 10.28% [2] 9.40% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 3.2 [4],[5] $ 3.8 [1],[7]
Amortized Cost 3.2 [4],[5] 3.8 [1],[7]
Fair Value $ 3.2 [4],[5] $ 3.7 [1],[7]
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured loan 3    
Coupon [2] 9.89%  
Spread [2] 5.00%  
Principal [4],[5] $ 0.5  
Amortized Cost [4],[5] 0.5  
Fair Value [4],[5] $ 0.5  
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured revolving loan    
Coupon [3]   9.47%
Spread [3]   5.00%
Principal [1],[7]   $ 0.4
Amortized Cost [1],[7]   0.4
Fair Value [1],[7]   $ 0.4
Investment, Identifier [Axis]: CMW Parent LLC (fka Black Arrow, Inc.), Series A units    
Shares/Units 32 32
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: CPIG Holdco Inc., First lien senior secured loan    
Coupon [2] 12.15%  
Spread [2] 7.00%  
Principal [4],[5] $ 14.8  
Amortized Cost [4],[5] 14.8  
Fair Value [4],[5] $ 14.3  
Investment, Identifier [Axis]: CREST Exeter Street Solar 2004-1, Preferred shares    
Shares/Units 3,500,000 3,500,000
Amortized Cost $ 0.0 [6] $ 0.0 [8]
Fair Value $ 0.0 [6] $ 0.0 [8]
Investment, Identifier [Axis]: CST Holding Company, First lien senior secured loan    
Coupon 11.95% [2] 10.97% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 11.7 [4],[5] $ 11.8 [1],[7]
Amortized Cost 11.7 [4],[5] 11.8 [1],[7]
Fair Value $ 11.7 [4],[5] $ 11.4 [1],[7]
Investment, Identifier [Axis]: CST Holding Company, First lien senior secured revolving loan    
Coupon [3]   10.97%
Spread [3]   6.75%
Principal [1],[7]   $ 0.2
Amortized Cost [1],[7]   0.2
Fair Value [1],[7]   $ 0.2
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, Common stock    
Shares/Units 41,443 41,443
Amortized Cost $ 14.5 [5] $ 14.5 [1]
Fair Value $ 23.2 [5] $ 22.7 [1]
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 1    
Coupon 11.60% [2] 11.13% [3]
Spread 6.40% [2] 6.40% [3]
Principal $ 38.7 [4],[5] $ 49.5 [1],[7]
Amortized Cost 38.7 [4],[5] 49.5 [1],[7]
Fair Value $ 38.3 [4],[5] $ 49.0 [1],[7]
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 2    
Coupon 11.60% [2] 11.13% [3]
Spread 6.40% [2] 6.40% [3]
Principal $ 0.1 [4],[5] $ 38.9 [1],[7]
Amortized Cost 0.1 [4],[5] 38.9 [1],[7]
Fair Value $ 0.1 [4],[5] $ 38.5 [1],[7]
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 3    
Coupon 11.60% [2] 10.98% [3]
Spread 6.40% [2] 6.25% [3]
Principal $ 40.3 [4],[5] $ 1.7 [1],[7]
Amortized Cost 40.3 [4],[5] 1.7 [1],[7]
Fair Value $ 39.9 [4],[5] $ 1.6 [1],[7]
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 4    
Coupon 11.95% [2] 11.13% [3]
Spread 6.75% [2] 6.40% [3]
Principal $ 4.9 [4],[5] $ 0.1 [1],[7]
Amortized Cost 4.9 [4],[5] 0.1 [1],[7]
Fair Value $ 4.9 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 1    
Coupon 13.91% [2] 12.92% [3]
Coupon, PIK 2.00% [2] 2.00% [3]
Spread 8.50% [2] 8.50% [3]
Principal $ 10.8 [4],[5] $ 31.1 [1],[7]
Amortized Cost 10.8 [4],[5] 31.1 [1],[7]
Fair Value $ 10.8 [4],[5] $ 30.5 [1],[7]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 2    
Coupon 13.91% [2] 12.92% [3]
Coupon, PIK 2.00% [2] 2.00% [3]
Spread 8.50% [2] 8.50% [3]
Principal $ 3.4 [4],[5] $ 11.9 [1],[7]
Amortized Cost 3.4 [4],[5] 11.9 [1],[7]
Fair Value $ 3.4 [4],[5] $ 11.6 [1],[7]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 3    
Coupon 13.91% [2] 12.92% [3]
Coupon, PIK 2.00% [2] 2.00% [3]
Spread 8.50% [2] 8.50% [3]
Principal $ 4.1 [4],[5] $ 9.7 [1],[7]
Amortized Cost 4.1 [4],[5] 9.7 [1],[7]
Fair Value $ 4.1 [4],[5] $ 9.5 [1],[7]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 4    
Coupon 13.91% [2] 13.23% [3]
Coupon, PIK 2.00% [2] 2.00% [3]
Spread 8.50% [2] 8.50% [3]
Principal $ 2.7 [4],[5] $ 7.8 [1],[7]
Amortized Cost 2.7 [4],[5] 7.8 [1],[7]
Fair Value 2.7 [4],[5] $ 7.6 [1],[7]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 5    
Coupon [3]   12.92%
Coupon, PIK [3]   2.00%
Spread [3]   8.50%
Principal [1],[7]   $ 5.3
Amortized Cost [1],[7]   5.2
Fair Value [1],[7]   $ 5.2
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan    
Principal [16] 0.0  
Amortized Cost [16] 0.0  
Fair Value [16] $ 0.0  
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan 1    
Coupon [3]   12.92%
Coupon, PIK [3]   2.00%
Spread [3]   8.50%
Principal [1],[7],[14]   $ 13.7
Amortized Cost [1],[7],[14]   13.7
Fair Value [1],[7],[14]   $ 13.4
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan 2    
Coupon [3]   12.92%
Coupon, PIK [3]   2.00%
Spread [3]   8.50%
Principal [1],[7],[14]   $ 1.0
Amortized Cost [1],[7],[14]   1.0
Fair Value [1],[7],[14]   $ 1.0
Investment, Identifier [Axis]: Caerus Midco 3 S.à r.l., First lien senior secured loan    
Coupon 10.99% [2] 9.83% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 5.4 [4],[5],[6] $ 5.4 [1],[7],[8]
Amortized Cost 5.3 [4],[5],[6] 5.3 [1],[7],[8]
Fair Value $ 5.4 [4],[5],[6] $ 5.3 [1],[7],[8]
Investment, Identifier [Axis]: Caerus Midco 3 S.à r.l., First lien senior secured revolving loan    
Coupon [2] 10.85%  
Spread [2] 5.75%  
Principal [4],[5],[6] $ 0.1  
Amortized Cost [4],[5],[6] 0.1  
Fair Value [4],[5],[6] $ 0.1  
Investment, Identifier [Axis]: CallMiner, Inc., Warrant to purchase shares of Series 1 preferred stock    
Shares/Units 2,350,636 2,350,636
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: Calyx Energy III, LLC, First lien senior secured loan    
Coupon [3]   12.37%
Spread [3]   8.00%
Principal [1],[7]   $ 57.0
Amortized Cost [1],[7]   57.0
Fair Value [1],[7]   $ 57.0
Investment, Identifier [Axis]: Calyx Energy III, LLC, First lien senior secured loan 1    
Coupon [2] 13.22%  
Spread [2] 8.00%  
Principal [4],[5] $ 50.5  
Amortized Cost [4],[5] 50.5  
Fair Value [4],[5] $ 50.5  
Investment, Identifier [Axis]: Calyx Energy III, LLC, First lien senior secured loan 2    
Coupon [2] 16.22%  
Spread [2] 11.00%  
Principal [4],[5] $ 5.0  
Amortized Cost [4],[5] 4.9  
Fair Value [4],[5] $ 5.0  
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, Class A units    
Shares/Units 10,581 10,581
Amortized Cost $ 10.6 [5] $ 10.6 [1]
Fair Value $ 18.5 [5] $ 20.1 [1]
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, First lien senior secured loan    
Coupon 9.95% [2] 9.13% [3]
Spread 4.75% [2] 4.75% [3]
Principal $ 0.2 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.2 [4],[5] 0.2 [1],[7]
Fair Value 0.2 [4],[5] 0.2 [1],[7]
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, First lien senior secured revolving loan    
Principal 0.0 [16] 0.0 [15]
Amortized Cost 0.0 [16] 0.0 [15]
Fair Value $ 0.0 [16] $ 0.0 [15]
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, Second lien senior secured loan    
Coupon 13.95% [2] 13.13% [3]
Spread 8.75% [2] 8.75% [3]
Principal $ 68.3 [4],[5] $ 68.3 [1],[7]
Amortized Cost 68.3 [4],[5] 68.3 [1],[7]
Fair Value $ 68.3 [4],[5] $ 68.3 [1],[7]
Investment, Identifier [Axis]: Captive Resources Midco, LLC, First lien senior secured loan    
Coupon 7.73% [2] 7.20% [3]
Spread 2.63% [2] 2.88% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., First lien senior secured revolving loan    
Coupon 11.75% [2] 11.00% [3]
Spread 3.50% [2] 3.50% [3]
Principal $ 4.9 [4],[5] $ 3.4 [1],[7]
Amortized Cost 4.9 [4],[5] 3.4 [1],[7]
Fair Value $ 4.7 [4],[5] $ 3.0 [1],[7]
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Second lien senior secured loan    
Coupon [3]   12.46%
Spread [3]   7.75%
Principal [1],[7]   $ 64.3
Amortized Cost [1],[7]   64.3
Fair Value [1],[7]   $ 57.8
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Second lien senior secured loan 1    
Coupon [2] 12.96%  
Spread [2] 7.75%  
Principal [4],[5] $ 1.7  
Amortized Cost [4],[5] 1.7  
Fair Value [4],[5] $ 1.6  
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Second lien senior secured loan 2    
Coupon [2] 13.14%  
Spread [2] 7.75%  
Principal [4],[5] $ 62.6  
Amortized Cost [4],[5] 62.6  
Fair Value [4],[5] $ 59.4  
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Series A preferred shares    
Coupon, PIK 11.00% [2] 15.73% [3]
Spread [3]   11.00%
Shares/Units 24,898 24,898
Amortized Cost $ 33.3 [5] $ 32.1 [1]
Fair Value $ 28.9 [5] $ 26.3 [1]
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Series A-2 preferred shares    
Coupon, PIK 11.00% [2] 15.73% [3]
Spread [3]   11.00%
Shares/Units 8,963 8,963
Amortized Cost $ 11.8 [5] $ 11.4 [1]
Fair Value $ 10.3 [5] $ 9.4 [1]
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Series A-3 preferred shares    
Coupon, PIK 11.00% [2] 11.00% [3]
Shares/Units 11,952 11,952
Amortized Cost $ 14.2 [5] $ 13.5 [1]
Fair Value 12.4 [5] 11.1 [1]
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured loan 1    
Principal 8.0 [5],[9] 9.5 [1],[10]
Amortized Cost 7.8 [5],[9] 9.3 [1],[10]
Fair Value 0.0 [5],[9] 4.0 [1],[10]
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured loan 2    
Principal 5.1 [5],[9] 2.1 [1],[10]
Amortized Cost 5.1 [5],[9] 2.7 [1],[10]
Fair Value 0.0 [5],[9] 0.9 [1],[10]
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured loan 3    
Principal [5],[9] 5.8  
Amortized Cost [5],[9] 5.9  
Fair Value [5],[9] $ 0.0  
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured loan 4    
Coupon, PIK [2] 15.26%  
Spread [2] 10.00%  
Principal [4],[5] $ 10.9  
Amortized Cost [4],[5] 10.8  
Fair Value [4],[5] 5.5  
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured revolving loan 1    
Principal 6.8 [5],[9],[13] 6.8 [1],[10],[14]
Amortized Cost 6.8 [5],[9],[13] 6.8 [1],[10],[14]
Fair Value 0.0 [5],[9],[13] 2.9 [1],[10],[14]
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured revolving loan 2    
Principal 1.0 [5],[9] 0.6 [1],[10],[14]
Amortized Cost 0.2 [5],[9] 0.2 [1],[10],[14]
Fair Value $ 0.0 [5],[9] $ 0.2 [1],[10],[14]
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured loan    
Coupon 7.63% [2] 13.30% [3]
Coupon, PIK [3]   7.33%
Spread 2.50% [2] 9.00% [3]
Principal $ 77.9 [4],[5] $ 75.4 [1],[7]
Amortized Cost 76.6 [4],[5] 75.3 [1],[7]
Fair Value $ 63.9 [4],[5] $ 70.9 [1],[7]
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured revolving loan    
Coupon [3]   9.70%
Spread [3]   5.75%
Principal [1],[7]   $ 5.0
Amortized Cost [1],[7]   5.0
Fair Value [1],[7]   $ 4.7
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured revolving loan 1    
Coupon [2] 10.69%  
Spread [2] 5.75%  
Principal [4],[5] $ 3.2  
Amortized Cost [4],[5] 3.2  
Fair Value [4],[5] $ 3.0  
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured revolving loan 2    
Coupon [2] 10.83%  
Spread [2] 5.75%  
Principal [4],[5] $ 2.3  
Amortized Cost [4],[5] 2.3  
Fair Value [4],[5] $ 2.2  
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, Membership interests    
Shares/Units 279,392 279,392
Amortized Cost $ 2.9 [5] $ 2.9 [1]
Fair Value $ 0.0 [5] $ 2.9 [1]
Investment, Identifier [Axis]: Chariot Buyer LLC, First lien senior secured revolving loan    
Coupon 8.20% [2] 7.38% [3]
Spread 3.00% [2] 3.00% [3]
Principal $ 0.9 [5] $ 3.5 [1]
Amortized Cost 0.9 [5] 3.5 [1]
Fair Value $ 0.8 [5] $ 3.2 [1]
Investment, Identifier [Axis]: Chariot Buyer LLC, Second lien senior secured loan    
Coupon 12.09% [2] 11.13% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 134.4 [4],[5] $ 134.4 [1],[7]
Amortized Cost 134.4 [4],[5] 134.4 [1],[7]
Fair Value $ 130.4 [4],[5] $ 126.3 [1],[7]
Investment, Identifier [Axis]: Cheyenne Petroleum Company Limited Partnership, CPC 2001 LLC and Mill Shoals LLC, First lien senior secured loan    
Coupon 14.34% [2] 13.69% [3]
Spread 9.00% [2] 9.00% [3]
Principal $ 49.3 [4],[5] $ 49.3 [1],[7]
Amortized Cost 49.3 [4],[5] 49.3 [1],[7]
Fair Value $ 49.3 [4],[5] $ 47.8 [1],[7]
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 1    
Coupon [3]   15.48%
Spread [3]   10.75%
Principal [1],[7]   $ 68.2
Amortized Cost [1],[7]   68.0
Fair Value [1],[7]   $ 66.9
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 2    
Coupon [3]   15.48%
Spread [3]   10.75%
Principal [1],[7]   $ 30.0
Amortized Cost [1],[7]   29.7
Fair Value [1],[7]   $ 29.4
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 3    
Coupon [3]   15.48%
Spread [3]   10.75%
Principal [1],[7]   $ 20.0
Amortized Cost [1],[7]   19.7
Fair Value [1],[7]   $ 19.6
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 4    
Coupon [3]   15.48%
Spread [3]   10.75%
Principal [1],[7]   $ 15.5
Amortized Cost [1],[7]   15.4
Fair Value [1],[7]   $ 15.2
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 5    
Coupon [3]   15.23%
Spread [3]   10.50%
Principal [1],[7]   $ 12.2
Amortized Cost [1],[7]   12.2
Fair Value [1],[7]   $ 11.9
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 6    
Coupon [3]   15.48%
Spread [3]   10.75%
Principal [1],[7]   $ 4.9
Amortized Cost [1],[7]   4.9
Fair Value [1],[7]   $ 4.8
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 7    
Coupon [3]   15.48%
Spread [3]   10.75%
Principal [1],[7]   $ 3.0
Amortized Cost [1],[7]   3.0
Fair Value [1],[7]   $ 3.0
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 8    
Coupon [3]   15.48%
Spread [3]   10.75%
Principal [1],[7]   $ 3.0
Amortized Cost [1],[7]   3.0
Fair Value [1],[7]   $ 3.0
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., Warrant to purchase units of shares    
Shares/Units   718.66
Amortized Cost [1],[8]   $ 2.1
Fair Value [1],[8]   8.8
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, Class A units    
Shares/Units 4,296  
Amortized Cost $ 4.3  
Fair Value $ 6.7  
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured loan 1    
Coupon [2] 11.60%  
Spread [2] 6.50%  
Principal [4],[5] $ 3.2  
Amortized Cost [4],[5] 3.2  
Fair Value [4],[5] $ 3.2  
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured loan 2    
Coupon [2] 12.08%  
Spread [2] 6.75%  
Principal [4],[5] $ 5.9  
Amortized Cost [4],[5] 5.9  
Fair Value [4],[5] $ 5.9  
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured loan 3    
Coupon [2] 11.91%  
Spread [2] 6.75%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured revolving loan 1    
Coupon [2] 10.64%  
Spread [2] 5.50%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured revolving loan 2    
Coupon [2] 10.68%  
Spread [2] 5.50%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured revolving loan 3    
Coupon [2] 10.85%  
Spread [2] 5.50%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., First lien senior secured loan    
Coupon [2] 9.84%  
Spread [2] 4.50%  
Principal [4],[5],[11] $ 10.8  
Amortized Cost [4],[5],[11] 10.4  
Fair Value [4],[5],[11] $ 10.1  
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., First lien senior secured notes    
Coupon [2] 6.50%  
Principal [5],[11] $ 88.9  
Amortized Cost [5],[11] 86.7  
Fair Value [5],[11] $ 79.1  
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Limited partnership interests    
Shares/Units 12,250,000  
Amortized Cost [5] $ 12.3  
Fair Value [5] $ 17.3  
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Second lien senior secured notes    
Coupon [2] 9.00%  
Shares/Units 120,963,000  
Amortized Cost [5],[11] $ 112.0  
Fair Value [5],[11] $ 105.2  
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Series A preferred stock    
Coupon, PIK [2] 17.37%  
Spread [2] 12.00%  
Shares/Units 141,928  
Amortized Cost [4],[5] $ 149.6  
Fair Value [4],[5] 153.7  
Investment, Identifier [Axis]: CoLTs 2005-1 Ltd.    
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: CoLTs 2005-1 Ltd., Preferred shares    
Shares/Units 360 360
Amortized Cost $ 0.0 [6] $ 0.0 [8]
Fair Value $ 0.0 [6] $ 0.0 [8]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., Class A common units    
Shares/Units 30,500 30,500
Amortized Cost $ 0.0 [5] $ 0.0 [1]
Fair Value $ 3.8 [5] $ 0.0 [1]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan    
Coupon [3]   9.63%
Spread [3]   5.25%
Principal [1],[7]   $ 30.2
Amortized Cost [1],[7]   30.2
Fair Value [1],[7]   $ 29.0
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan 1    
Coupon [2] 11.22%  
Spread [2] 6.00%  
Principal [4],[5] $ 30.8  
Amortized Cost [4],[5] 30.8  
Fair Value [4],[5] $ 30.3  
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan 2    
Coupon [2] 10.44%  
Spread [2] 5.25%  
Principal [4] $ 0.8  
Amortized Cost [4] 0.8  
Fair Value [4] $ 0.8  
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan 3    
Coupon [2] 11.19%  
Spread [2] 6.00%  
Principal [4],[5] $ 11.6  
Amortized Cost [4],[5] 11.6  
Fair Value [4],[5] $ 11.6  
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured revolving loan    
Coupon [3]   9.63%
Spread [3]   5.25%
Principal [1],[7]   $ 2.5
Amortized Cost [1],[7]   2.5
Fair Value [1],[7]   $ 2.4
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., Preferred units    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 3,020 3,020
Amortized Cost $ 3.5 [5] $ 3.3 [1]
Fair Value $ 0.4 [5] $ 4.0 [1]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., Series A preferred shares    
Coupon, PIK 15.81% [2] 14.73% [3]
Spread 10.00% [2] 10.00% [3]
Shares/Units 60,236 60,236
Amortized Cost $ 75.0 [4],[5] $ 69.7 [1]
Fair Value $ 75.0 [4],[5] $ 69.7 [1]
Investment, Identifier [Axis]: Color Intermediate, LLC, First lien senior secured loan    
Coupon 10.84% [2] 10.08% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 20.3 [4],[5] $ 20.3 [1],[7]
Amortized Cost 20.3 [4],[5] 20.3 [1],[7]
Fair Value $ 20.1 [4],[5] $ 19.5 [1],[7]
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., First lien senior secured loan    
Coupon 11.43% [2] 10.33% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 24.7 [4],[5] $ 33.3 [1],[7]
Amortized Cost 24.7 [4],[5] 33.3 [1],[7]
Fair Value $ 24.7 [4],[5] $ 33.3 [1],[7]
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., First lien senior secured revolving loan    
Coupon [2] 11.39%  
Spread [2] 6.25%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., Second lien senior secured loan    
Coupon 13.00% [2] 13.00% [3]
Principal $ 19.9 [5] $ 19.9 [1]
Amortized Cost 19.9 [5] 19.9 [1]
Fair Value $ 19.9 [5] $ 19.5 [1]
Investment, Identifier [Axis]: Community Brands ParentCo, LLC, Class A units    
Shares/Units 500,000 500,000
Amortized Cost $ 5.0 [5] $ 5.0 [1]
Fair Value $ 6.3 [5] $ 6.4 [1]
Investment, Identifier [Axis]: Community Brands ParentCo, LLC, First lien senior secured loan    
Coupon 10.70% [2] 10.17% [3]
Spread 5.50% [2] 5.75% [3]
Principal $ 10.6 [4],[5] $ 10.6 [1],[7]
Amortized Cost 10.6 [4],[5] 10.6 [1],[7]
Fair Value $ 10.4 [4],[5] $ 10.4 [1],[7]
Investment, Identifier [Axis]: Compex Legal Services, Inc., First lien senior secured revolving loan    
Coupon 10.79% [2] 9.51% [3]
Spread 5.45% [2] 5.25% [3]
Principal $ 2.5 [4],[5] $ 1.8 [1],[7]
Amortized Cost 2.4 [4],[5] 1.7 [1],[7]
Fair Value $ 2.5 [4],[5] $ 1.8 [1],[7]
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan    
Coupon 11.74% [2] 10.59% [3]
Spread 6.50% [2] 5.75% [3]
Principal $ 0.3 [4],[5] $ 0.3 [1],[7]
Amortized Cost 0.3 [4],[5] 0.3 [1],[7]
Fair Value $ 0.3 [4],[5] $ 0.3 [1],[7]
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured revolving loan    
Coupon 12.00% [2] 10.58% [3]
Spread 6.50% [2] 5.75% [3]
Principal $ 1.9 [4],[5] $ 0.8 [1],[7]
Amortized Cost 1.9 [4],[5] 0.8 [1],[7]
Fair Value $ 1.8 [4],[5] $ 0.7 [1],[7]
Investment, Identifier [Axis]: Computer Services, Inc., First lien senior secured loan    
Coupon 12.03% [2] 11.15% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 34.0 [4],[5] $ 34.1 [1],[7]
Amortized Cost 34.0 [4],[5] 34.1 [1],[7]
Fair Value $ 34.0 [4],[5] $ 33.0 [1],[7]
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., Common units    
Shares/Units 4,799,000 4,799,000
Amortized Cost $ 4.8 [5],[6] $ 4.8 [1],[8]
Fair Value $ 7.5 [5],[6] $ 6.5 [1],[8]
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 1    
Coupon 11.14% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 74.5 [4],[5],[6] $ 11.7 [1],[7],[8]
Amortized Cost 74.5 [4],[5],[6] 11.7 [1],[7],[8]
Fair Value $ 72.3 [4],[5],[6] $ 11.4 [1],[7],[8]
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 2    
Coupon 9.81% [2] 10.48% [3]
Spread 6.25% [2] 5.75% [3]
Principal $ 28.5 [5],[6] $ 74.8 [1],[7],[8]
Amortized Cost 29.3 [5],[6] 74.8 [1],[7],[8]
Fair Value $ 27.6 [5],[6] $ 72.6 [1],[7],[8]
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 3    
Coupon 11.14% [2] 8.39% [3]
Spread 5.75% [2] 6.25% [3]
Principal $ 11.7 [4],[5],[6] $ 26.9 [1],[8]
Amortized Cost 11.7 [4],[5],[6] 28.3 [1],[8]
Fair Value $ 11.3 [4],[5],[6] $ 26.1 [1],[8]
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured revolving loan    
Coupon [3]   8.32%
Spread [3]   6.25%
Principal [1],[7],[8]   $ 0.8
Amortized Cost [1],[7],[8]   0.8
Fair Value [1],[7],[8]   $ 0.8
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured revolving loan 1    
Coupon [2] 9.81%  
Spread [2] 6.25%  
Principal [4],[5],[6] $ 0.2  
Amortized Cost [4],[5],[6] 0.2  
Fair Value [4],[5],[6] $ 0.2  
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured revolving loan 2    
Coupon [2] 11.14%  
Spread [2] 5.75%  
Principal [4],[5],[6] $ 1.1  
Amortized Cost [4],[5],[6] 1.1  
Fair Value [4],[5],[6] $ 1.0  
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., Series A common units    
Shares/Units 23,340 23,340
Amortized Cost $ 0.2 [5],[6] $ 0.2 [1],[8]
Fair Value $ 0.0 [5],[6] $ 0.0 [1],[8]
Investment, Identifier [Axis]: Continental Acquisition Holdings, Inc., First lien senior secured loan 1    
Coupon 11.89% [2] 11.48% [3]
Spread 6.50% [2] 6.75% [3]
Principal $ 36.0 [4],[5] $ 36.2 [1],[7]
Amortized Cost 36.0 [4],[5] 36.2 [1],[7]
Fair Value $ 32.0 [4],[5] $ 33.3 [1],[7]
Investment, Identifier [Axis]: Continental Acquisition Holdings, Inc., First lien senior secured loan 2    
Coupon 11.89% [2] 11.48% [3]
Spread 6.50% [2] 6.75% [3]
Principal $ 5.3 [4],[5] $ 5.4 [1],[7]
Amortized Cost 5.3 [4],[5] 5.4 [1],[7]
Fair Value $ 4.8 [4],[5] $ 4.9 [1],[7]
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan    
Coupon [3]   11.38%
Spread [3]   7.00%
Principal [1],[7]   $ 0.1
Amortized Cost [1],[7]   0.1
Fair Value [1],[7]   $ 0.1
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan 1    
Coupon [2] 11.39%  
Spread [2] 6.00%  
Principal [4],[5] $ 6.4  
Amortized Cost [4],[5] 6.4  
Fair Value [4],[5] $ 6.4  
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan 2    
Coupon [2] 11.04%  
Spread [2] 6.00%  
Principal [4],[5] $ 1.3  
Amortized Cost [4],[5] 1.3  
Fair Value [4],[5] $ 1.3  
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan 3    
Coupon [2] 11.64%  
Spread [2] 6.25%  
Principal [4],[5] $ 1.6  
Amortized Cost [4],[5] 1.6  
Fair Value [4],[5] $ 1.6  
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured revolving loan    
Coupon [3]   13.50%
Spread [3]   6.00%
Principal [1],[7]   $ 0.7
Amortized Cost [1],[7]   0.7
Fair Value [1],[7]   $ 0.7
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured revolving loan 1    
Coupon [2] 13.25%  
Spread [2] 5.00%  
Principal [4],[5] $ 0.6  
Amortized Cost [4],[5] 0.6  
Fair Value [4],[5] $ 0.6  
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured revolving loan 2    
Coupon [2] 10.39%  
Spread [2] 5.00%  
Principal [4],[5] $ 0.5  
Amortized Cost [4],[5] 0.5  
Fair Value [4],[5] $ 0.5  
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L., First lien senior secured loan    
Coupon [3]   10.33%
Spread [3]   5.75%
Principal [1],[7],[8]   $ 62.8
Amortized Cost [1],[7],[8]   62.8
Fair Value [1],[7],[8]   $ 62.8
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L., First lien senior secured loan 1    
Coupon [2] 11.24%  
Spread [2] 6.00%  
Principal [4],[5],[6] $ 0.1  
Amortized Cost [4],[5],[6] 0.1  
Fair Value [4],[5],[6] $ 0.1  
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L., First lien senior secured loan 2    
Coupon [2] 11.39%  
Spread [2] 6.00%  
Principal [4],[5],[6] $ 17.6  
Amortized Cost [4],[5],[6] 17.6  
Fair Value [4],[5],[6] $ 17.6  
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 1    
Coupon 10.59% [2] 9.48% [3]
Spread 5.25% [2] 4.75% [3]
Principal $ 2.7 [4],[5],[6] $ 2.7 [1],[7],[8]
Amortized Cost 2.7 [4],[5],[6] 2.7 [1],[7],[8]
Fair Value $ 2.5 [4],[5],[6] $ 2.6 [1],[7],[8]
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 2    
Coupon 10.59% [2] 9.83% [3]
Spread 5.25% [2] 5.25% [3]
Principal $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Amortized Cost 0.1 [4],[5],[6] 0.1 [1],[7],[8]
Fair Value $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 3    
Coupon 10.59% [2] 9.93% [3]
Spread 5.25% [2] 5.25% [3]
Principal $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Amortized Cost 0.1 [4],[5],[6] 0.1 [1],[7],[8]
Fair Value $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP, Limited partnership units    
Shares/Units 59,665,989 59,665,989
Amortized Cost $ 59.7 [5] $ 59.7 [1]
Fair Value $ 42.7 [5] $ 48.8 [1]
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP, Second lien senior secured loan    
Coupon 11.69% [2] 10.94% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 155.7 [4],[5] $ 155.7 [1],[7]
Amortized Cost 155.7 [4],[5] 155.7 [1],[7]
Fair Value $ 138.5 [4],[5] $ 129.2 [1],[7]
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., Common equity    
Shares/Units 190,143 190,143
Amortized Cost $ 0.0 [5],[6] $ 0.0 [1],[8]
Fair Value $ 0.0 [5],[6] $ 0.0 [1],[8]
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 1    
Coupon 9.89% [2] 10.31% [3]
Spread 5.00% [2] 6.00% [3]
Principal $ 6.2 [4],[5],[6] $ 6.2 [1],[7],[8]
Amortized Cost 6.2 [4],[5],[6] 6.2 [1],[7],[8]
Fair Value $ 6.1 [4],[5],[6] $ 6.2 [1],[7],[8]
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 2    
Coupon 9.89% [2] 9.06% [3]
Spread 5.00% [2] 5.50% [3]
Principal $ 4.3 [4],[5],[6] $ 4.4 [1],[7],[8]
Amortized Cost 4.3 [4],[5],[6] 4.4 [1],[7],[8]
Fair Value $ 4.3 [4],[5],[6] $ 4.3 [1],[7],[8]
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 3    
Coupon 11.89% [2] 11.06% [3]
Spread 7.00% [2] 7.50% [3]
Principal $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Amortized Cost 0.1 [4],[5],[6] 0.1 [1],[7],[8]
Fair Value $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 4    
Coupon 10.89% [2] 9.06% [3]
Spread 6.00% [2] 5.50% [3]
Principal $ 0.2 [4],[5],[6] $ 6.3 [1],[7],[8]
Amortized Cost 0.2 [4],[5],[6] 6.3 [1],[7],[8]
Fair Value $ 0.2 [4],[5],[6] $ 6.2 [1],[7],[8]
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 5    
Coupon [2] 11.08%  
Spread [2] 6.00%  
Principal [4],[5],[6] $ 7.7  
Amortized Cost [4],[5],[6] 7.7  
Fair Value [4],[5],[6] $ 7.7  
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., Preferred equity    
Coupon, PIK 9.00% [2] 9.00% [3]
Shares/Units 198 198
Amortized Cost $ 0.3 [5],[6] $ 0.3 [1],[8]
Fair Value $ 0.7 [5],[6] $ 0.7 [1],[8]
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Class A-1 common stock    
Shares/Units 1,360,100 1,360,100
Amortized Cost $ 13.6 [5] $ 13.6 [1]
Fair Value $ 17.7 [5] $ 15.2 [1]
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., First lien senior secured revolving loan    
Coupon 8.16% [2] 7.51% [3]
Spread 3.00% [2] 3.25% [3]
Principal $ 30.9 [5],[13] $ 21.9 [1],[14]
Amortized Cost 30.9 [5],[13] 21.9 [1],[14]
Fair Value $ 28.5 [5],[13] $ 19.7 [1],[14]
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Second lien senior secured loan    
Coupon 12.00% [2] 10.88% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 137.5 [4],[5] $ 137.5 [1],[7]
Amortized Cost 137.5 [4],[5] 137.5 [1],[7]
Fair Value $ 126.5 [4],[5] $ 123.7 [1],[7]
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Series A preferred shares    
Coupon, PIK 10.50% [2] 10.50% [3]
Shares/Units 116,413 116,413
Amortized Cost $ 138.7 [5] $ 131.8 [1]
Fair Value $ 115.1 [5] $ 109.4 [1]
Investment, Identifier [Axis]: Coupa Holdings, LLC and Coupa Software Incorporated, First lien senior secured loan    
Coupon [2] 12.60%  
Spread [2] 7.50%  
Principal [4],[5] $ 9.0  
Amortized Cost [4],[5] 9.0  
Fair Value [4],[5] $ 8.8  
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, Class A-2 units    
Shares/Units 4,772 4,772
Amortized Cost $ 4.8 $ 4.8
Fair Value $ 3.3 $ 5.5
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, First lien senior secured loan    
Coupon 10.64% [2] 9.16% [3]
Spread 5.25% [2] 4.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, First lien senior secured revolving loan    
Coupon 10.64% [2] 9.66% [3]
Spread 5.25% [2] 5.25% [3]
Principal $ 3.0 [4],[5] $ 1.5 [1],[7]
Amortized Cost 3.0 [4],[5] 1.5 [1],[7]
Fair Value $ 2.8 [4],[5] $ 1.5 [1],[7]
Investment, Identifier [Axis]: Coyote Buyer, LLC, First lien senior secured revolving loan    
Coupon [2] 11.20%  
Spread [2] 6.00%  
Principal [4],[5] $ 2.3  
Amortized Cost [4],[5] 2.1  
Fair Value [4],[5] $ 2.2  
Investment, Identifier [Axis]: CrossCountry Mortgage, LLC, First lien senior secured loan    
Coupon 12.48% [2] 11.73% [3]
Spread 7.00% [2] 7.00% [3]
Principal $ 93.8 [4],[5] $ 93.8 [1],[7]
Amortized Cost 93.8 [4],[5] 93.8 [1],[7]
Fair Value $ 93.8 [4],[5] $ 92.8 [1],[7]
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, Class A shares    
Shares/Units 176 176
Amortized Cost $ 1.8 [5] $ 1.8 [1]
Fair Value $ 1.4 [5] $ 1.9 [1]
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, Common units    
Shares/Units 28 28
Amortized Cost $ 0.3 [5] $ 0.3 [1]
Fair Value $ 0.2 [5] $ 0.3 [1]
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, First lien senior secured loan    
Coupon 10.89% [2] 10.11% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 24.4 [4],[5] $ 24.5 [1],[7]
Amortized Cost 24.4 [4],[5] 24.5 [1],[7]
Fair Value $ 23.7 [4],[5] $ 24.5 [1],[7]
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, First lien senior secured revolving loan    
Coupon [2] 10.89%  
Spread [2] 5.50%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: DFC Global Facility Borrower III LLC, First lien senior secured revolving loan    
Coupon 12.76% [2] 11.62% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 99.2 [4],[5],[6],[17] $ 158.6 [1],[7],[8],[18]
Amortized Cost 98.3 [4],[5],[6],[17] 172.8 [1],[7],[8],[18]
Fair Value $ 97.8 [4],[5],[6],[17] $ 158.6 [1],[7],[8],[18]
Investment, Identifier [Axis]: DFC Global Facility Borrower III LLC, First lien senior secured revolving loan, Secured borrowing    
Coupon 12.76% 11.62%
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan    
Coupon [2] 12.20%  
Spread [2] 7.00%  
Principal [4],[5] $ 2.0  
Amortized Cost [4],[5] 1.9  
Fair Value [4],[5] $ 1.9  
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 1    
Coupon [3]   9.44%
Spread [3]   6.00%
Principal [1],[7]   $ 164.9
Amortized Cost [1],[7]   164.9
Fair Value [1],[7]   $ 164.9
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 2    
Coupon [3]   10.38%
Spread [3]   6.00%
Principal [1],[7]   $ 6.5
Amortized Cost [1],[7]   6.5
Fair Value [1],[7]   $ 6.5
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 3    
Coupon [3]   10.38%
Spread [3]   6.00%
Principal [1],[7]   $ 4.3
Amortized Cost [1],[7]   4.3
Fair Value [1],[7]   $ 4.3
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., Common stock    
Shares/Units 8,549 8,549
Amortized Cost $ 8.6 [5] $ 8.5 [1]
Fair Value $ 6.1 [5] $ 7.2 [1]
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 1    
Coupon 11.45% [2] 10.47% [3]
Spread 6.25% [2] 5.75% [3]
Principal $ 1.1 [4],[5] $ 28.0 [1],[7]
Amortized Cost 1.1 [4],[5] 28.0 [1],[7]
Fair Value $ 1.0 [4],[5] $ 26.8 [1],[7]
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 2    
Coupon 11.64% [2] 10.47% [3]
Spread 6.25% [2] 5.75% [3]
Principal $ 26.7 [4],[5] $ 25.8 [7]
Amortized Cost 26.7 [4],[5] 25.8 [7]
Fair Value $ 25.1 [4],[5] $ 24.8 [7]
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 3    
Coupon [2] 11.45%  
Spread [2] 6.25%  
Principal [4],[5] $ 1.1  
Amortized Cost [4],[5] 1.1  
Fair Value [4],[5] $ 1.0  
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 4    
Coupon [2] 11.64%  
Spread [2] 6.25%  
Principal [4],[5] $ 24.6  
Amortized Cost [4],[5] 24.6  
Fair Value [4],[5] $ 23.1  
Investment, Identifier [Axis]: DS Admiral Bidco, LLC, First lien senior secured loan    
Coupon 11.74% [2] 10.16% [3]
Spread 6.50% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., Class A common stock    
Shares/Units 7,500 7,500
Amortized Cost $ 7.5 [5] $ 7.5 [1]
Fair Value $ 6.4 [5] $ 6.3 [1]
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., Class B common stock    
Shares/Units 7,500 7,500
Amortized Cost $ 0.0 [5] $ 0.0 [1]
Fair Value $ 0.0 [5] $ 0.0 [1]
Investment, Identifier [Axis]: Datix Bidco Limited, First lien senior secured loan    
Coupon 9.53% [2] 8.95% [3]
Spread 4.50% [2] 4.50% [3]
Principal $ 4.3 [5],[6] $ 4.3 [1],[8]
Amortized Cost 4.2 [5],[6] 4.2 [1],[8]
Fair Value $ 4.2 [5],[6] $ 4.2 [1],[8]
Investment, Identifier [Axis]: Datix Bidco Limited, Second lien senior secured loan    
Coupon 12.78% [2] 12.20% [3]
Spread 7.75% [2] 7.75% [3]
Principal $ 0.7 [5],[6] $ 0.7 [1],[8]
Amortized Cost 0.7 [5],[6] 0.7 [1],[8]
Fair Value $ 0.7 [5],[6] $ 0.7 [1],[8]
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., First lien senior secured loan    
Coupon [3]   8.70%
Spread [3]   4.00%
Principal [1]   $ 1.0
Amortized Cost [1]   1.0
Fair Value [1]   $ 0.9
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Second lien senior secured loan    
Coupon 12.26% [2] 11.70% [3]
Spread 7.00% [2] 7.00% [3]
Principal $ 11.0 [5] $ 11.0 [1]
Amortized Cost 10.4 [5] 10.3 [1]
Fair Value $ 10.9 [5] $ 10.7 [1]
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Series A preferred shares    
Coupon, PIK 10.50% [2] 10.50% [3]
Shares/Units 129,822 129,822
Amortized Cost $ 161.0 [5] $ 153.0 [1]
Fair Value $ 143.3 [5] $ 134.6 [1]
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Series A units    
Shares/Units 817,194 817,194
Amortized Cost $ 13.3 [5] $ 13.3 [1]
Fair Value $ 10.8 [5] $ 12.5 [1]
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., Common stock    
Shares/Units 9,599 9,599
Amortized Cost $ 9.6 [5] $ 9.6 [1]
Fair Value $ 9.8 [5] $ 9.4 [1]
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., First lien senior secured loan    
Coupon 11.39% [2] 10.73% [3]
Coupon, PIK [3]   0.27%
Spread 6.00% [2] 6.00% [3]
Principal $ 147.8 [4],[5] $ 148.6 [1],[7]
Amortized Cost 147.8 [4],[5] 148.6 [1],[7]
Fair Value $ 146.3 [4],[5] $ 145.6 [1],[7]
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., First lien senior secured revolving loan    
Coupon 11.20% [2] 10.73% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 3.8 [4],[5] $ 6.6 [1],[7]
Amortized Cost 3.8 [4],[5] 6.6 [1],[7]
Fair Value $ 3.7 [4],[5] $ 6.5 [1],[7]
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, Class A units    
Shares/Units 2,549,000 2,549,000
Amortized Cost $ 2.5 [5] $ 2.5 [1]
Fair Value $ 2.1 [5] $ 2.4 [1]
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured loan 1    
Coupon 11.55% [2] 10.52% [3]
Spread 6.00% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured loan 2    
Coupon 11.55% [2] 10.52% [3]
Spread 6.00% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured revolving loan 1    
Coupon [2] 11.51%  
Spread [2] 6.00%  
Principal [4],[5] $ 1.8  
Amortized Cost [4],[5] 1.8  
Fair Value [4],[5] $ 1.8  
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured revolving loan 2    
Coupon [2] 13.25%  
Spread [2] 5.00%  
Principal [4],[5] $ 1.1  
Amortized Cost [4],[5] 1.1  
Fair Value [4],[5] $ 1.1  
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 1    
Coupon 11.45% [2] 10.63% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 14.8 [4],[5] $ 35.9 [1],[7]
Amortized Cost 14.6 [4],[5] 35.4 [1],[7]
Fair Value $ 14.5 [4],[5] $ 35.2 [1],[7]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 2    
Coupon 10.95% [2] 10.63% [3]
Spread 5.75% [2] 6.25% [3]
Principal $ 0.1 [4],[5] $ 2.0 [1],[7]
Amortized Cost 0.1 [4],[5] 2.0 [1],[7]
Fair Value $ 0.1 [4],[5] $ 2.0 [1],[7]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 3    
Coupon 10.95% [2] 10.13% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 4    
Coupon 11.45% [2] 10.13% [3]
Spread 6.25% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured revolving loan    
Coupon 11.45% [2] 10.63% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 1.1 [4],[5] $ 0.7 [1],[7],[14]
Amortized Cost 1.1 [4],[5] 0.6 [1],[7],[14]
Fair Value $ 1.0 [4],[5] $ 0.7 [1],[7],[14]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., Preferred stock    
Coupon, PIK 10.50% [2] 10.50% [3]
Shares/Units 13,140 13,140
Amortized Cost $ 15.8 [5] $ 15.0 [1]
Fair Value $ 14.5 [5] $ 13.8 [1]
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., Common units    
Shares/Units 600 600
Amortized Cost $ 0.6 [5] $ 0.6 [1]
Fair Value $ 1.4 [5] $ 1.2 [1]
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan 1    
Coupon 10.85% [2] 10.03% [3]
Spread 5.65% [2] 5.65% [3]
Principal $ 15.6 [4],[5] $ 15.8 [1],[7]
Amortized Cost 15.6 [4],[5] 15.8 [1],[7]
Fair Value $ 15.6 [4],[5] $ 15.8 [1],[7]
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan 2    
Coupon 10.85% [2] 10.03% [3]
Spread 5.65% [2] 5.65% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan 3    
Coupon 10.85% [2] 10.03% [3]
Spread 5.65% [2] 5.65% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Drilling Info Holdings, Inc. and Titan DI Preferred Holdings, Inc., Preferred stock    
Coupon, PIK 13.50% [2] 13.50% [3]
Shares/Units 30 29.53
Amortized Cost $ 45.4 [5] $ 42.4 [1]
Fair Value $ 43.9 [5] $ 41.6 [1]
Investment, Identifier [Axis]: Drilling Info Holdings, Inc. and Titan DI Preferred Holdings, Inc., Second lien senior secured loan    
Coupon 13.45% [2] 12.63% [3]
Spread 8.25% [2] 8.25% [3]
Principal $ 25.0 [5] $ 25.0 [1]
Amortized Cost 25.0 [5] 25.0 [1]
Fair Value $ 25.0 [5] $ 24.8 [1]
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured loan    
Coupon 10.88% [2] 10.69% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 5.8 [4],[5],[6] $ 40.0 [1],[7],[8]
Amortized Cost 5.7 [4],[5],[6] 42.2 [1],[7],[8]
Fair Value $ 5.8 [4],[5],[6] $ 40.0 [1],[7],[8]
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured revolving loan    
Coupon [3]   11.20%
Spread [3]   4.75%
Principal [1],[7],[8]   $ 5.0
Amortized Cost [1],[7],[8]   5.0
Fair Value [1],[7],[8]   $ 5.0
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured revolving loan 1    
Coupon [2] 11.15%  
Spread [2] 5.75%  
Principal [4],[5],[6] $ 5.0  
Amortized Cost [4],[5],[6] 5.0  
Fair Value [4],[5],[6] $ 5.1  
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured revolving loan 2    
Coupon [2] 10.94%  
Spread [2] 5.75%  
Principal [4],[5],[6] $ 1.9  
Amortized Cost [4],[5],[6] 1.9  
Fair Value [4],[5],[6] $ 1.9  
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP, Common units    
Shares/Units 9,773,000 9,773,000
Amortized Cost $ 9.8 $ 9.8
Fair Value $ 8.6 $ 9.0
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP, First lien senior secured loan    
Coupon 12.04% [2] 11.65% [3]
Spread 7.00% [2] 7.00% [3]
Principal $ 21.9 [4],[5] $ 23.2 [1],[7]
Amortized Cost 21.9 [4],[5] 23.2 [1],[7]
Fair Value $ 21.9 [4],[5] $ 23.2 [1],[7]
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP, First lien senior secured revolving loan    
Coupon [2] 12.40%  
Spread [2] 7.00%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P., First lien senior secured loan    
Coupon [2] 10.00%  
Spread [2] 4.50%  
Principal [4],[5] $ 8.5  
Amortized Cost [4],[5] 8.1  
Fair Value [4],[5] $ 8.1  
Investment, Identifier [Axis]: EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P., Partnership units    
Shares/Units 5,034,483 5,034,483
Amortized Cost $ 3.2 [5],[6] $ 3.2 [1],[8]
Fair Value $ 12.1 [5],[6] $ 11.7 [1],[8]
Investment, Identifier [Axis]: EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P., Second lien senior secured loan    
Coupon 12.00% [2] 11.23% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 177.9 [4],[5] $ 177.9 [1],[7]
Amortized Cost 177.9 [4],[5] 177.9 [1],[7]
Fair Value $ 172.6 [4],[5] $ 176.1 [1],[7]
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 1    
Coupon 10.77% [2] 10.01% [3]
Spread 5.38% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 5.6 [1],[7]
Amortized Cost 0.1 [4],[5] 5.6 [1],[7]
Fair Value $ 0.1 [4],[5] $ 5.6 [1],[7]
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 2    
Coupon 10.89% [2] 10.23% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5] $ 0.4 [1],[7]
Amortized Cost 0.1 [4],[5] 0.4 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.4 [1],[7]
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 3    
Coupon 10.89% [2] 10.23% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.4 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.4 [4],[5] 0.1 [1],[7]
Fair Value $ 0.4 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 4    
Coupon 11.14% [2] 10.11% [3]
Spread 5.75% [2] 5.38% [3]
Principal $ 4.2 [4],[5] $ 0.1 [1],[7]
Amortized Cost 4.2 [4],[5] 0.1 [1],[7]
Fair Value $ 4.2 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: EPS NASS Parent, Inc., First lien senior secured loan    
Coupon 11.14% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.2 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.2 [4],[5] 0.2 [1],[7]
Fair Value $ 0.2 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: EPS NASS Parent, Inc., First lien senior secured revolving loan    
Coupon 11.14% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 1.2 [4],[5] $ 0.8 [1],[7],[14]
Amortized Cost 1.2 [4],[5] 0.8 [1],[7],[14]
Fair Value 1.2 [4],[5] 0.8 [1],[7],[14]
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC    
Fair Value $ 5.7 $ 3.1
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC, Class A-1 units    
Shares/Units 96,897 96,897
Amortized Cost $ 2.3 [5] $ 2.3 [1]
Fair Value $ 5.5 [5] $ 3.0 [1]
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC, Class A-2 units    
Shares/Units 3,500 3,500
Amortized Cost $ 3.5 [5] $ 3.5 [1]
Fair Value $ 0.2 [5] $ 0.1 [1]
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P., First lien senior secured loan    
Coupon 11.16% [2] 10.07% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 6.8 [4],[5] $ 6.8 [1],[7]
Amortized Cost 6.8 [4],[5] 6.8 [1],[7]
Fair Value $ 6.7 [4],[5] $ 6.7 [1],[7]
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P., First lien senior secured revolving loan    
Coupon [2] 11.59%  
Spread [2] 6.25%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P., Limited partner interests    
Shares/Units 6,246,801 6,046,628
Amortized Cost $ 6.2 $ 6.0
Fair Value $ 7.5 $ 6.0
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Senior subordinated loan 1    
Coupon [2] 13.27%  
Spread 8.00%  
Principal [4],[5],[6] $ 44.4  
Amortized Cost [4],[5],[6] 44.4  
Fair Value [4],[5],[6] $ 41.8  
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Senior subordinated loan 2    
Coupon, PIK [2] 15.00%  
Principal [5],[6] $ 22.5  
Amortized Cost [5],[6] 22.5  
Fair Value [5],[6] $ 22.3  
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Senior subordinated loan 3    
Coupon, PIK [2] 15.00%  
Principal [5],[6] $ 4.7  
Amortized Cost [5],[6] 4.7  
Fair Value [5],[6] $ 4.7  
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Warrant to purchase shares of ordinary shares 1    
Shares/Units 180  
Amortized Cost [5],[6] $ 0.0  
Fair Value [5],[6] $ 3.5  
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Warrant to purchase shares of ordinary shares 2    
Shares/Units 199  
Amortized Cost [5],[6] $ 0.0  
Fair Value [5],[6] $ 0.6  
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Warrant to purchase shares of ordinary shares 3    
Shares/Units 494  
Amortized Cost [5],[6] $ 0.0  
Fair Value [5],[6] 0.0  
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited, Senior subordinated loan 1    
Coupon, PIK [3]   15.00%
Principal [1],[8]   $ 25.5
Amortized Cost [1],[8]   25.5
Fair Value [1],[8]   $ 23.9
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited, Senior subordinated loan 2    
Coupon [3]   12.30%
Principal [1],[8]   $ 41.7
Amortized Cost [1],[8]   41.7
Fair Value [1],[8]   40.5
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC    
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: Eckler Purchaser LLC, Class A common units    
Shares/Units 67,972 67,972
Amortized Cost $ 0.0 [5] $ 0.0
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 1    
Coupon 11.54% [2] 10.74% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 61.0 [4] $ 50.0 [1],[7]
Amortized Cost 61.0 [4] 50.0 [1],[7]
Fair Value $ 59.2 [4] $ 48.5 [1],[7]
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 2    
Coupon 11.54% [2] 10.68% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 5.6 [4],[5] $ 11.3 [1],[7]
Amortized Cost 5.6 [4],[5] 11.3 [1],[7]
Fair Value $ 5.4 [4],[5] $ 11.0 [1],[7]
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 3    
Coupon 11.00% [2] 10.68% [3]
Spread 5.50% [2] 6.00% [3]
Principal $ 0.1 [4],[5] $ 5.7 [1],[7]
Amortized Cost 0.1 [4],[5] 5.7 [1],[7]
Fair Value $ 0.1 [4],[5] $ 5.6 [1],[7]
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan    
Coupon [3]   10.51%
Spread [3]   6.00%
Principal [1],[7]   $ 4.1
Amortized Cost [1],[7]   4.1
Fair Value [1],[7]   $ 4.0
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan 1    
Coupon [2] 10.84%  
Spread [2] 5.50%  
Principal [4],[5] $ 3.4  
Amortized Cost [4],[5] 3.4  
Fair Value [4],[5] $ 3.3  
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan 2    
Coupon [2] 10.69%  
Spread [2] 5.50%  
Principal $ 0.7  
Amortized Cost 0.7  
Fair Value $ 0.7  
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., Preferred equity    
Shares/Units 4,599 4,599
Amortized Cost $ 4.6 [5] $ 4.6 [1]
Fair Value $ 6.0 [5] $ 5.3 [1]
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 1    
Coupon 11.61% [2] 10.86% [3]
Spread 6.25% [2] 6.00% [3]
Principal $ 8.6 [4],[5] $ 10.2 [1],[7]
Amortized Cost 8.6 [4],[5] 10.2 [1],[7]
Fair Value $ 8.2 [4],[5] $ 10.0 [1],[7]
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 2    
Coupon 11.35% [2] 9.47% [3]
Spread 6.25% [2] 6.00% [3]
Principal $ 1.5 [4],[5] $ 9.1 [1],[7]
Amortized Cost 1.5 [4],[5] 9.1 [1],[7]
Fair Value $ 1.5 [4],[5] $ 9.0 [1],[7]
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 3    
Coupon [2] 11.35%  
Spread [2] 6.25%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 4    
Coupon [2] 11.39%  
Spread [2] 6.25%  
Principal [4],[5] $ 8.8  
Amortized Cost [4],[5] 8.8  
Fair Value [4],[5] $ 8.5  
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 5    
Coupon [2] 11.52%  
Spread [2] 6.25%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured revolving loan    
Coupon [3]   10.36%
Spread [3]   6.00%
Principal [1],[7],[14]   $ 1.4
Amortized Cost [1],[7],[14]   1.4
Fair Value [1],[7],[14]   $ 1.4
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured revolving loan 1    
Coupon [2] 11.62%  
Spread [2] 6.25%  
Principal [4],[5],[13] $ 1.2  
Amortized Cost [4],[5],[13] 1.2  
Fair Value [4],[5],[13] $ 1.1  
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured revolving loan 2    
Coupon [2] 11.40%  
Spread [2] 6.25%  
Principal [4],[5],[13] $ 0.7  
Amortized Cost [4],[5],[13] 0.7  
Fair Value [4],[5],[13] $ 0.7  
Investment, Identifier [Axis]: Emergency Communications Network, LLC, First lien senior secured loan    
Coupon 12.80% [2] 11.84% [3]
Coupon, PIK 5.25% [2] 6.02% [3]
Spread 7.75% [2] 7.75% [3]
Principal $ 49.7 [4],[5] $ 48.4 [1],[7]
Amortized Cost 49.7 [4],[5] 48.3 [1],[7]
Fair Value $ 44.7 [4],[5] $ 43.6 [1],[7]
Investment, Identifier [Axis]: Emergency Communications Network, LLC, First lien senior secured revolving loan    
Coupon 13.03% [2] 12.15% [3]
Coupon, PIK 5.25% [2] 5.97% [3]
Spread 7.75% [2] 7.75% [3]
Principal $ 7.0 [4],[5] $ 6.8 [1],[7]
Amortized Cost 7.0 [4],[5] 6.8 [1],[7]
Fair Value $ 6.3 [4],[5] $ 6.1 [1],[7]
Investment, Identifier [Axis]: Ensemble RCM, LLC, First lien senior secured loan    
Coupon [3]   9.19%
Spread [3]   5.00%
Principal [1],[7]   $ 2.5
Amortized Cost [1],[7]   2.5
Fair Value [1],[7]   $ 2.5
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 1    
Coupon 10.89% [2] 6.69% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5],[6] $ 5.6 [1],[8]
Amortized Cost 0.1 [4],[5],[6] 5.9 [1],[8]
Fair Value $ 0.1 [4],[5],[6] $ 5.5 [1],[8]
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 2    
Coupon 9.30% [2] 9.98% [3]
Spread 5.75% [2] 5.25% [3]
Principal $ 5.7 [5],[6] $ 0.1 [1],[7],[8]
Amortized Cost 5.9 [5],[6] 0.1 [1],[7],[8]
Fair Value $ 5.5 [5],[6] $ 0.1 [1],[7],[8]
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 3    
Coupon 10.89% [2] 9.98% [3]
Spread 5.50% [2] 5.25% [3]
Principal $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Amortized Cost 0.1 [4],[5],[6] 0.1 [1],[7],[8]
Fair Value $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, Class A units    
Shares/Units 6,447 6,447
Amortized Cost $ 22.9 [5] $ 22.9 [1]
Fair Value $ 42.1 [5] $ 42.0 [1]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 1    
Coupon 10.93% [2] 9.49% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 48.0 [4],[5] $ 78.1 [1],[7]
Amortized Cost 48.0 [4],[5] 78.1 [1],[7]
Fair Value $ 47.0 [4],[5] $ 76.5 [1],[7]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 2    
Coupon 10.93% [2] 9.49% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 77.7 [4],[5] $ 48.2 [1],[7]
Amortized Cost 77.7 [4],[5] 48.2 [1],[7]
Fair Value $ 76.2 [4],[5] $ 47.2 [1],[7]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 3    
Coupon 10.93% [2] 9.71% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 25.1 [4],[5] $ 19.6 [1],[7]
Amortized Cost 25.1 [4],[5] 19.6 [1],[7]
Fair Value $ 24.6 [4],[5] $ 19.2 [1],[7]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 4    
Coupon [3]   14.94%
Spread [3]   10.19%
Principal [1],[7]   $ 5.6
Amortized Cost [1],[7]   5.6
Fair Value [1],[7]   5.5
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured revolving loan    
Coupon [2] 10.95%  
Spread [2] 5.75%  
Principal $ 11.2 [4],[5],[13] 0.0 [15]
Amortized Cost 11.2 [4],[5],[13] 0.0 [15]
Fair Value 11.0 [4],[5],[13] 0.0 [15]
Investment, Identifier [Axis]: European Capital UK SME Debt LP    
Fair Value $ 16.1 $ 26.5
Investment, Identifier [Axis]: European Capital UK SME Debt LP, Limited partnership interest    
Shares (as a percent) 45.00% 45.00%
Amortized Cost $ 8.2 [6] $ 18.0 [8]
Fair Value $ 16.1 [6] $ 26.5 [8]
Investment, Identifier [Axis]: Everspin Technologies, Inc., Warrant to purchase shares of common stock    
Shares/Units 18,461 18,461
Amortized Cost $ 0.4 $ 0.4
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: Evolent Health LLC and Evolent Health, Inc., First lien senior secured loan 1    
Coupon [2] 11.39%  
Spread [2] 6.00%  
Principal [4],[5],[6] $ 7.8  
Amortized Cost [4],[5],[6] 7.8  
Fair Value [4],[5],[6] $ 7.8  
Investment, Identifier [Axis]: Evolent Health LLC and Evolent Health, Inc., First lien senior secured loan 2    
Coupon [2] 11.39%  
Spread [2] 6.00%  
Principal [4],[5],[6] $ 34.0  
Amortized Cost [4],[5],[6] 34.0  
Fair Value [4],[5],[6] $ 34.0  
Investment, Identifier [Axis]: Evolent Health LLC and Evolent Health, Inc., Series A preferred shares    
Coupon [2] 11.42%  
Spread [2] 6.00%  
Shares/Units 3,834  
Amortized Cost [4],[5],[6] $ 3.8  
Fair Value [4],[5],[6] $ 4.4  
Investment, Identifier [Axis]: Evolent Health LLC, First lien senior secured loan    
Coupon [3]   10.23%
Spread [3]   5.50%
Principal [1],[7],[8]   $ 7.8
Amortized Cost [1],[7],[8]   7.8
Fair Value [1],[7],[8]   $ 7.7
Investment, Identifier [Axis]: Excelligence Holdings Corp., First lien senior secured loan    
Coupon 11.39% [2] 10.73% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 9.2 [4],[5] $ 9.2 [1],[7]
Amortized Cost 9.2 [4],[5] 9.2 [1],[7]
Fair Value $ 9.2 [4],[5] $ 9.2 [1],[7]
Investment, Identifier [Axis]: Explorer Investor, Inc, First lien senior secured loan    
Coupon [3]   10.15%
Spread [3]   5.75%
Principal [1],[7]   $ 1.0
Amortized Cost [1],[7]   1.0
Fair Value [1],[7]   $ 0.9
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan    
Coupon [3]   12.23%
Spread [3]   7.50%
Principal [1],[7]   $ 20.2
Amortized Cost [1],[7]   20.2
Fair Value [1],[7]   $ 20.2
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan 1    
Coupon [2] 12.70%  
Spread [2] 7.50%  
Principal [4],[5] $ 21.5  
Amortized Cost [4],[5] 21.5  
Fair Value [4],[5] $ 21.5  
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan 2    
Coupon [2] 12.70%  
Spread [2] 7.50%  
Principal [4],[5] $ 3.9  
Amortized Cost [4],[5] 3.9  
Fair Value [4],[5] $ 3.9  
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan 1    
Coupon 10.45% [2] 9.13% [3]
Spread 5.25% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan 2    
Coupon 10.45% [2] 10.96% [3]
Spread 5.25% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, Class A units    
Shares/Units 113,219 113,219
Amortized Cost $ 11.1 [5] $ 11.1 [1]
Fair Value $ 37.4 [5] $ 31.2 [1]
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, First lien senior secured loan    
Coupon 10.45% [2] 9.49% [3]
Spread 5.25% [2] 5.25% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value 0.1 [4],[5] 0.1 [1],[7]
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, First lien senior secured revolving loan    
Principal 0.0 [16] 0.0 [15]
Amortized Cost 0.0 [16] 0.0 [15]
Fair Value $ 0.0 [16] $ 0.0 [15]
Investment, Identifier [Axis]: Faraday Buyer, LLC, First lien senior secured loan    
Coupon [3]   11.32%
Spread [3]   7.00%
Principal [1],[7]   $ 52.2
Amortized Cost [1],[7]   52.2
Fair Value [1],[7]   $ 50.6
Investment, Identifier [Axis]: Faraday Buyer, LLC, First lien senior secured loan 1    
Coupon [2] 11.86%  
Spread [2] 7.00%  
Principal [4],[5] $ 52.1  
Amortized Cost [4],[5] 52.1  
Fair Value [4],[5] $ 52.1  
Investment, Identifier [Axis]: Faraday Buyer, LLC, First lien senior secured loan 2    
Coupon [2] 12.04%  
Spread [2] 7.00%  
Principal [4],[5] $ 3.6  
Amortized Cost [4],[5] 3.6  
Fair Value [4],[5] $ 3.6  
Investment, Identifier [Axis]: Faraday&Future Inc., FF Inc., Faraday SPE, LLC and Faraday Future Intelligent Electric Inc., Warrant to purchase shares of Class A common stock    
Shares/Units 27,824,527 [5] 633,008
Amortized Cost $ 2.3 [5] $ 2.3 [1]
Fair Value $ 0.0 [5] $ 0.0 [1]
Investment, Identifier [Axis]: Ferrellgas, L.P. and Ferrellgas Partners, L.P., Class B units    
Shares/Units 59,428 59,428
Amortized Cost $ 12.6 [5] $ 14.9
Fair Value $ 12.6 [5] $ 14.9
Investment, Identifier [Axis]: Ferrellgas, L.P. and Ferrellgas Partners, L.P., Senior preferred units    
Coupon 8.96% [2] 896.00% [3]
Shares/Units 59,422 59,422
Amortized Cost $ 59.5 $ 59.5
Fair Value $ 60.0 $ 60.0
Investment, Identifier [Axis]: First Insight, Inc., Warrant to purchase shares of Series C preferred stock    
Shares/Units 122,827  
Amortized Cost $ 0.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: First Insight, Inc., Warrant to purchase units of Series C preferred stock    
Shares/Units   122,827
Amortized Cost   $ 0.0
Fair Value   $ 0.0
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured loan 1    
Coupon 11.00% [2] 9.88% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 29.4 [4],[5] $ 29.6 [1],[7]
Amortized Cost 29.4 [4],[5] 29.6 [1],[7]
Fair Value $ 29.4 [4],[5] $ 29.6 [1],[7]
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured loan 2    
Coupon 11.00% [2] 9.88% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 1.1 [4],[5] $ 1.1 [1],[7]
Amortized Cost 1.1 [4],[5] 1.1 [1],[7]
Fair Value $ 1.1 [4],[5] $ 1.1 [1],[7]
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured revolving loan 1    
Coupon 10.72% [2] 9.88% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 6.6 [4],[5] $ 6.5 [1],[7],[14]
Amortized Cost 6.6 [4],[5] 6.5 [1],[7],[14]
Fair Value $ 6.6 [4],[5] $ 6.5 [1],[7],[14]
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured revolving loan 2    
Coupon 10.72% [2] 11.50% [3]
Spread 5.50% [2] 4.50% [3]
Principal $ 3.7 [4],[5] $ 0.5 [1],[7],[14]
Amortized Cost 3.7 [4],[5] 0.5 [1],[7],[14]
Fair Value $ 3.7 [4],[5] $ 0.5 [1],[7],[14]
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., Series A preferred stock    
Shares/Units 1,272 1,272
Amortized Cost $ 0.7 [5] $ 0.7 [1]
Fair Value $ 1.4 [5] $ 1.5 [1]
Investment, Identifier [Axis]: Florida Food Products, LLC, First lien senior secured loan 1    
Coupon 10.19% [2] 9.32% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 0.5 [4],[5] $ 0.4 [1],[7]
Amortized Cost 0.4 [4],[5] 0.4 [1],[7]
Fair Value $ 0.4 [4],[5] $ 0.4 [1],[7]
Investment, Identifier [Axis]: Florida Food Products, LLC, First lien senior secured loan 2    
Coupon 10.10% [2] 9.38% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 0.4 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.4 [4],[5] 0.1 [1],[7]
Fair Value $ 0.4 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Florida Food Products, LLC, Second lien senior secured loan    
Coupon 13.19% [2] 12.38% [3]
Spread 8.00% [2] 8.00% [3]
Principal $ 71.8 [4],[5] $ 71.8 [1],[7]
Amortized Cost 71.8 [4],[5] 71.8 [1],[7]
Fair Value $ 66.8 [4],[5] $ 70.4 [1],[7]
Investment, Identifier [Axis]: FlyWheel Acquireco, Inc., First lien senior secured loan    
Coupon [2] 11.60%  
Spread [2] 6.50%  
Principal [4],[5] $ 52.6  
Amortized Cost [4],[5] 52.6  
Fair Value [4],[5] $ 51.6  
Investment, Identifier [Axis]: FlyWheel Acquireco, Inc., First lien senior secured revolving loan    
Coupon [2] 11.60%  
Spread [2] 6.50%  
Principal [4],[5] $ 5.5  
Amortized Cost [4],[5] 5.5  
Fair Value [4],[5] $ 5.4  
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 1    
Coupon 15.04% [2] 14.23% [3]
Coupon, PIK 9.50% [2] 9.50% [3]
Spread 9.50% [2] 9.50% [3]
Principal $ 24.5 [4],[5] $ 23.8 [1],[7]
Amortized Cost 24.3 [4],[5] 23.5 [1],[7]
Fair Value $ 24.5 [4],[5] $ 23.8 [1],[7]
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 2    
Coupon [2] 15.04%  
Coupon, PIK 9.50% [2] 13.73% [3]
Spread 9.50% [2] 9.00% [3]
Principal $ 0.4 [4],[5] $ 12.6 [1],[7]
Amortized Cost 0.4 [4],[5] 12.6 [1],[7]
Fair Value $ 0.4 [4],[5] $ 12.6 [1],[7]
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 3    
Coupon [2] 14.54%  
Coupon, PIK [2] 9.00%  
Spread [2] 9.00%  
Principal [4],[5] $ 13.2  
Amortized Cost [4],[5] 13.2  
Fair Value [4],[5] $ 13.2  
Investment, Identifier [Axis]: Foundation Consumer Brands, LLC, First lien senior secured loan    
Coupon [3]   10.15%
Spread [3]   5.50%
Principal [1],[7]   $ 12.8
Amortized Cost [1],[7]   12.6
Fair Value [1],[7]   $ 12.8
Investment, Identifier [Axis]: Foundation Consumer Brands, LLC, First lien senior secured loan 1    
Coupon [2] 11.47%  
Spread [2] 6.25%  
Principal [4],[5] $ 13.6  
Amortized Cost [4],[5] 13.2  
Fair Value [4],[5] $ 13.6  
Investment, Identifier [Axis]: Foundation Consumer Brands, LLC, First lien senior secured loan 2    
Coupon [2] 11.64%  
Spread [2] 6.25%  
Principal [4],[5] $ 35.6  
Amortized Cost [4],[5] 34.5  
Fair Value [4],[5] $ 35.6  
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan 1    
Coupon 11.59% [2] 10.68% [3]
Spread 6.25% [2] 6.00% [3]
Principal $ 104.1 [4] $ 112.6 [1],[7]
Amortized Cost 104.1 [4] 112.6 [1],[7]
Fair Value $ 104.1 [4] $ 111.5 [1],[7]
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan 2    
Coupon 11.59% [2] 10.68% [3]
Spread 6.25% [2] 6.00% [3]
Principal $ 30.2 [4],[5] $ 30.3 [1],[7]
Amortized Cost 30.2 [4],[5] 30.3 [1],[7]
Fair Value $ 30.2 [4],[5] $ 30.0 [1],[7]
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan 3    
Coupon [3]   10.68%
Spread [3]   6.00%
Principal [1],[7]   $ 1.1
Amortized Cost [1],[7]   1.1
Fair Value [1],[7]   $ 1.1
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured revolving loan    
Coupon [3]   10.32%
Spread [3]   6.00%
Principal [1],[7]   $ 8.6
Amortized Cost [1],[7]   8.6
Fair Value [1],[7]   $ 8.5
Investment, Identifier [Axis]: GF Parent LLC, Class A common units    
Shares/Units 60,000 60,000
Amortized Cost $ 0.1 [5] $ 0.1
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: GF Parent LLC, Class A preferred units    
Shares/Units 2,940 2,940
Amortized Cost $ 2.9 [5] $ 2.9
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: GF Parent LLC, Class B common units    
Shares/Units   0.26
Amortized Cost   $ 0.0
Fair Value   $ 0.0
Investment, Identifier [Axis]: GHX Ultimate Parent Corporation, Commerce Parent, Inc. and Commerce Topco, LLC, Class A units    
Shares/Units 15,706,534 14,853,569
Amortized Cost $ 17.4 [5] $ 15.7 [1]
Fair Value $ 30.3 [5] $ 27.8 [1]
Investment, Identifier [Axis]: GHX Ultimate Parent Corporation, Commerce Parent, Inc. and Commerce Topco, LLC, Second lien senior secured loan    
Coupon 12.29% [2] 11.48% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 114.0 [4],[5] $ 114.0 [1],[7]
Amortized Cost 114.0 [4],[5] 114.0 [1],[7]
Fair Value $ 112.9 [4],[5] $ 111.8 [1],[7]
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured loan 1    
Coupon 11.14% [2] 10.73% [3]
Spread 5.75% [2] 6.00% [3]
Principal $ 10.1 [4],[5] $ 10.2 [1],[7]
Amortized Cost 10.1 [4],[5] 10.2 [1],[7]
Fair Value $ 9.9 [4],[5] $ 10.0 [1],[7]
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured loan 2    
Coupon 11.14% [2] 10.73% [3]
Spread 5.75% [2] 6.00% [3]
Principal $ 1.8 [4],[5] $ 1.8 [1],[7]
Amortized Cost 1.8 [4],[5] 1.8 [1],[7]
Fair Value $ 1.7 [4],[5] $ 1.7 [1],[7]
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured revolving loan    
Coupon 11.14% [2] 10.73% [3]
Spread 5.75% [2] 6.00% [3]
Principal $ 1.4 [4],[5] $ 0.4 [1],[7]
Amortized Cost 1.4 [4],[5] 0.4 [1],[7]
Fair Value $ 1.4 [4],[5] $ 0.4 [1],[7]
Investment, Identifier [Axis]: GNZ Energy Bidco Limited and Galileo Co-investment Trust I, Common units    
Shares/Units 13,736,365 13,736,365
Amortized Cost $ 8.3 [5],[6] $ 8.3 [1],[8]
Fair Value $ 11.6 [5],[6] $ 8.7 [1],[8]
Investment, Identifier [Axis]: GNZ Energy Bidco Limited and Galileo Co-investment Trust I, First lien senior secured loan    
Coupon 12.40% [2] 10.65% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 29.8 [4],[5],[6] $ 30.8 [1],[7],[8]
Amortized Cost 30.5 [4],[5],[6] 30.5 [1],[7],[8]
Fair Value $ 29.8 [4],[5],[6] $ 30.8 [1],[7],[8]
Investment, Identifier [Axis]: GPM Investments, LLC and ARKO Corp., Common stock    
Shares/Units 2,088,478 2,088,478
Amortized Cost $ 19.8 [11] $ 19.8
Fair Value $ 16.6 [11] $ 26.1
Investment, Identifier [Axis]: GPM Investments, LLC and ARKO Corp., Warrant to purchase common stock    
Shares/Units 1,088,780  
Amortized Cost [5],[11] $ 1.6  
Fair Value [5],[11] $ 1.6  
Investment, Identifier [Axis]: GPM Investments, LLC and ARKO Corp., Warrant to purchase units of common stock    
Shares/Units   1,088,780
Amortized Cost [1]   $ 1.6
Fair Value [1]   $ 1.9
Investment, Identifier [Axis]: GS SEER Group Borrower LLC and GS SEER Group Holdings LLC, Class A common units    
Shares/Units 4,424  
Amortized Cost [5] $ 4.4  
Fair Value [5] $ 4.4  
Investment, Identifier [Axis]: GS SEER Group Borrower LLC and GS SEER Group Holdings LLC, First lien senior secured loan    
Coupon [2] 11.80%  
Spread [2] 6.75%  
Principal [4],[5] $ 18.2  
Amortized Cost [4],[5] 18.2  
Fair Value [4],[5] $ 17.7  
Investment, Identifier [Axis]: GSV PracticeTek Holdings, LLC, Class A units    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 12,827,482 12,827,482
Amortized Cost $ 1.1 [5] $ 1.1 [1]
Fair Value $ 8.8 [5] $ 14.0 [1]
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured loan    
Coupon 10.59% [2] 9.98% [3]
Spread 5.25% [2] 5.25% [3]
Principal $ 34.0 [4],[5] $ 34.2 [1],[7]
Amortized Cost 34.0 [4],[5] 34.2 [1],[7]
Fair Value 33.0 [4],[5] 32.8 [1],[7]
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured revolving loan    
Principal 0.0 [16] 0.0 [15]
Amortized Cost 0.0 [16] 0.0 [15]
Fair Value $ 0.0 [16] $ 0.0 [15]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Class A common stock    
Shares/Units 8 8.39
Amortized Cost $ 0.8 [5] $ 0.8 [1]
Fair Value $ 1.3 [5] $ 1.4 [1]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan 1    
Coupon 8.99% [2] 7.92% [3]
Spread 3.75% [2] 3.75% [3]
Principal $ 0.2 [4],[5] $ 0.2 [1]
Amortized Cost 0.2 [4],[5] 0.2 [1]
Fair Value $ 0.2 [4],[5] $ 0.2 [1]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan 2    
Coupon 9.46% [2] 8.42% [3]
Spread 4.25% [2] 4.25% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured revolving loan    
Coupon 8.96% [2] 7.92% [3]
Spread 3.75% [2] 3.75% [3]
Principal $ 1.5 [4],[5] $ 1.5 [1]
Amortized Cost 1.5 [4],[5] 1.5 [1]
Fair Value $ 1.5 [4],[5] $ 1.5 [1]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 1    
Coupon 12.77% [2] 11.24% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 32.4 [4],[5] $ 32.4 [1]
Amortized Cost 32.4 [4],[5] 32.4 [1]
Fair Value $ 32.4 [4],[5] $ 31.7 [1]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 2    
Coupon 12.77% [2] 11.24% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 7.5 [4],[5] $ 21.1 [1],[7]
Amortized Cost 7.5 [4],[5] 21.1 [1],[7]
Fair Value $ 7.5 [4],[5] $ 20.7 [1],[7]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 3    
Coupon 12.77% [2] 11.24% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 21.1 [4],[5] $ 7.5 [1]
Amortized Cost 21.1 [4],[5] 7.5 [1]
Fair Value $ 21.1 [4],[5] $ 7.4 [1]
Investment, Identifier [Axis]: Genomatica, Inc., Warrant to purchase shares of Series D preferred stock    
Shares/Units   322,422
Amortized Cost   $ 0.0
Fair Value   $ 0.0
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., First lien senior secured loan 1    
Coupon 9.44% [2] 8.63% [3]
Spread 4.25% [2] 4.25% [3]
Principal $ 28.9 [4],[5],[11] $ 12.1 [1],[7],[12]
Amortized Cost 26.3 [4],[5],[11] 11.3 [1],[7],[12]
Fair Value $ 16.1 [4],[5],[11] $ 8.5 [1],[7],[12]
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., First lien senior secured loan 2    
Coupon 9.47% [2] 8.42% [3]
Spread 4.25% [2] 4.25% [3]
Principal $ 12.4 [4],[5],[11] $ 25.7 [1],[7],[12]
Amortized Cost 11.7 [4],[5],[11] 23.8 [1],[7],[12]
Fair Value $ 6.9 [4],[5],[11] $ 17.9 [1],[7],[12]
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Second lien senior secured loan    
Coupon 11.85% [2] 11.10% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 95.4 [4],[5] $ 95.4 [1],[7]
Amortized Cost 95.4 [4],[5] 95.4 [1],[7]
Fair Value $ 54.4 [4],[5] $ 71.6 [1],[7]
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Warrant to purchase units of common stock 1    
Shares/Units 115,733 115,733
Amortized Cost $ 0.9 [5] $ 0.9 [1]
Fair Value $ 0.3 [5] $ 1.8 [1]
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Warrant to purchase units of common stock 2    
Shares/Units 1,927 1,927
Amortized Cost $ 0.1 [5] $ 0.1 [1]
Fair Value $ 0.0 [5] $ 0.0 [1]
Investment, Identifier [Axis]: Global Music Rights, LLC, First lien senior secured loan    
Coupon 10.66% [2] 10.23% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, First lien senior secured loan    
Coupon 12.58% [2] 11.80% [3]
Spread 7.38% [2] 7.38% [3]
Principal $ 33.3 [4],[5] $ 17.7 [1],[7]
Amortized Cost 33.3 [4],[5] 17.7 [1],[7]
Fair Value $ 32.8 [4],[5] $ 17.4 [1],[7]
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, Series E-1 preferred stock    
Coupon, PIK 6.00% [2] 6.00% [3]
Shares/Units 166,059 166,059
Amortized Cost $ 14.2 [5] $ 14.2 [1]
Fair Value $ 14.2 [5] $ 14.2 [1]
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, Warrant to purchase shares of Series E-1 preferred stock    
Shares/Units 71,607 43,154
Amortized Cost $ 0.0 [5] $ 0.0
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 1    
Coupon 11.21% [2] 10.73% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 0.2 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.2 [4],[5] 0.2 [1],[7]
Fair Value $ 0.2 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 2    
Coupon 10.82% [2] 10.23% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 3    
Coupon 10.71% [2] 10.23% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 4    
Coupon 10.71% [2] 10.43% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, Preferred units    
Coupon, PIK 14.00% [2] 14.00% [3]
Shares/Units 1,828,645 1,828,644
Amortized Cost $ 65.6 $ 57.5
Fair Value $ 65.6 $ 57.5
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, Senior subordinated loan    
Coupon, PIK 10.50% [2] 10.50% [3]
Principal $ 45.8 [5] $ 43.5 [1]
Amortized Cost 45.8 [5] 43.5 [1]
Fair Value $ 41.7 [5] $ 40.0 [1]
Investment, Identifier [Axis]: GroundWorks, LLC, First lien senior secured loan    
Coupon [2] 11.65%  
Spread [2] 6.50%  
Principal [4],[5] $ 10.0  
Amortized Cost [4],[5] 9.7  
Fair Value [4],[5] $ 9.7  
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, Common units    
Shares/Units 5,827 5,827
Amortized Cost $ 5.8 $ 5.8
Fair Value $ 5.0 $ 3.5
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 1    
Coupon 10.58% [2] 8.07% [3]
Spread 5.00% [2] 3.69% [3]
Principal $ 0.1 [4],[5],[11] $ 26.4 [1],[12]
Amortized Cost 0.1 [4],[5],[11] 23.8 [1],[12]
Fair Value $ 0.1 [4],[5],[11] $ 23.3 [1],[12]
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 2    
Coupon 9.27% [2] 8.38% [3]
Spread 3.69% [2] 4.00% [3]
Principal $ 26.2 [5],[11] $ 3.3 [1],[12]
Amortized Cost 24.2 [5],[11] 3.1 [1],[12]
Fair Value $ 23.0 [5],[11] $ 3.0 [1],[12]
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 3    
Coupon 9.58% [2] 9.38% [3]
Spread 4.00% [2] 5.00% [3]
Principal $ 3.3 [5],[11] $ 0.1 [1],[7],[12]
Amortized Cost 3.1 [5],[11] 0.1 [1],[7],[12]
Fair Value $ 2.9 [5],[11] $ 0.1 [1],[7],[12]
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, Second lien senior secured loan    
Coupon 12.58% [2] 11.38% [3]
Spread 7.00% [2] 7.00% [3]
Principal $ 73.0 [5] $ 73.0 [1]
Amortized Cost 73.0 [5] 73.0 [1]
Fair Value 62.8 [5] $ 62.8 [1]
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, Class A units    
Shares/Units   16,980
Amortized Cost [1]   $ 1.7
Fair Value [1]   $ 3.1
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan 1    
Coupon [3]   10.42%
Spread [3]   6.00%
Principal [1],[7]   $ 60.5
Amortized Cost [1],[7]   60.5
Fair Value [1],[7]   $ 60.5
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan 2    
Coupon [3]   11.41%
Spread [3]   6.75%
Principal [1],[7]   $ 7.8
Amortized Cost [1],[7]   7.8
Fair Value [1],[7]   $ 7.8
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan 3    
Coupon [3]   10.42%
Spread [3]   6.00%
Principal [1],[7]   $ 0.1
Amortized Cost [1],[7]   0.1
Fair Value [1],[7]   0.1
Investment, Identifier [Axis]: HCI Equity, LLC    
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: HCI Equity, LLC, Member interest    
Shares (as a percent) 100.00% 100.00%
Amortized Cost $ 0.0 [6],[11] $ 0.0 [8],[12]
Fair Value $ 0.0 [6],[11] $ 0.0 [8],[12]
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, Class A units    
Shares/Units 25,490 25,490
Amortized Cost $ 2.5 [5] $ 2.5 [1]
Fair Value $ 2.2 [5] $ 2.2 [1]
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured loan    
Coupon [3]   10.19%
Spread [3]   5.50%
Principal [1],[7]   $ 5.8
Amortized Cost [1],[7]   5.8
Fair Value [1],[7]   $ 5.7
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured loan 1    
Coupon [2] 10.89%  
Spread [2] 5.50%  
Principal [4],[5] $ 7.8  
Amortized Cost [4],[5] 7.8  
Fair Value [4],[5] $ 7.7  
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured loan 2    
Coupon [2] 10.88%  
Spread [2] 5.50%  
Principal [4],[5] $ 1.1  
Amortized Cost [4],[5] 1.1  
Fair Value [4],[5] $ 1.1  
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured revolving loan    
Coupon 10.70% [2] 9.94% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 2.8 [4],[5],[13] $ 2.8 [1],[7]
Amortized Cost 2.8 [4],[5],[13] 2.8 [1],[7]
Fair Value $ 2.7 [4],[5],[13] $ 2.7 [1],[7]
Investment, Identifier [Axis]: Halcon Holdings, LLC, First lien senior secured loan    
Coupon 12.89% [2] 12.20% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 12.5 [5] $ 13.4 [1]
Amortized Cost 12.4 [5] 13.2 [1]
Fair Value 12.5 [5] 13.4 [1]
Investment, Identifier [Axis]: Halex Holdings, Inc.    
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: Halex Holdings, Inc., Common stock    
Shares/Units 51,853 51,853
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: Hanger, Inc., First lien senior secured loan    
Coupon 11.39% [2] 10.43% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 54.1 [4],[5] $ 54.2 [1],[7]
Amortized Cost 54.1 [4],[5] 54.2 [1],[7]
Fair Value $ 54.1 [4],[5] $ 53.2 [1],[7]
Investment, Identifier [Axis]: Hanger, Inc., Second lien senior secured loan    
Coupon 14.89% [2] 13.93% [3]
Spread 9.75% [2] 9.75% [3]
Principal $ 110.6 [4],[5] $ 110.6 [1],[7]
Amortized Cost 110.6 [4],[5] 110.6 [1],[7]
Fair Value $ 110.6 [4],[5] $ 106.8 [1],[7]
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured loan    
Coupon 10.89% [2] 10.64% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 1.8 [4],[5] $ 1.1 [1],[7]
Amortized Cost 1.8 [4],[5] 1.1 [1],[7]
Fair Value $ 1.8 [4],[5] $ 1.1 [1],[7]
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured revolving loan 1    
Coupon [2] 10.72%  
Spread [2] 5.50%  
Principal [4],[5] $ 2.7  
Amortized Cost [4],[5] 2.7  
Fair Value [4],[5] $ 2.6  
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured revolving loan 2    
Coupon [2] 10.89%  
Spread [2] 5.50%  
Principal [4],[5] $ 2.5  
Amortized Cost [4],[5] 2.5  
Fair Value [4],[5] $ 2.4  
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured loan    
Coupon [3]   11.74%
Spread [3]   7.00%
Principal [1],[7]   $ 87.2
Amortized Cost [1],[7]   87.2
Fair Value [1],[7]   87.2
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured loan 1    
Coupon [2] 12.16%  
Spread [2] 7.00%  
Principal [4],[5] $ 87.2  
Amortized Cost [4],[5] 87.2  
Fair Value [4],[5] $ 87.2  
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured loan 2    
Coupon [2] 12.16%  
Spread [2] 7.00%  
Principal [4],[5] $ 4.2  
Amortized Cost [4],[5] 4.2  
Fair Value [4],[5] 4.2  
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured revolving loan    
Principal 0.0 [16] 0.0 [15]
Amortized Cost 0.0 [16] 0.0 [15]
Fair Value $ 0.0 [16] $ 0.0 [15]
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, First lien senior secured loan    
Coupon 10.60% [2] 9.88% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value 0.1 [4],[5] 0.1 [1],[7]
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC    
Fair Value $ 247.4 $ 209.6
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC, Class A1 units    
Shares/Units 76,446,352 76,446,352
Amortized Cost $ 77.1 $ 77.1
Fair Value $ 155.3 $ 124.0
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC, Class A2 units    
Shares/Units 4,072,278 4,072,278
Amortized Cost $ 3.8 $ 3.8
Fair Value $ 8.3 $ 6.3
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC, First lien senior secured loan    
Coupon [3]   11.00%
Coupon, PIK 11.00% [2] 8.54% [3]
Principal $ 83.8 [5] $ 79.3 [1]
Amortized Cost 83.8 [5] 79.3 [1]
Fair Value $ 83.8 [5] $ 79.3 [1]
Investment, Identifier [Axis]: Helix Acquisition Holdings, Inc., First lien senior secured loan    
Coupon [2] 12.34%  
Spread [2] 7.00%  
Principal [4],[5] $ 12.6  
Amortized Cost [4],[5] 12.6  
Fair Value [4],[5] $ 12.2  
Investment, Identifier [Axis]: Help/Systems Holdings, Inc., First lien senior secured revolving loan    
Coupon [2] 9.17%  
Spread [2] 4.00%  
Principal [5] $ 0.4  
Amortized Cost [5] 0.4  
Fair Value [5] $ 0.4  
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 1    
Coupon 11.39% [2] 10.73% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 22.7 [4],[5] $ 22.8 [1],[7]
Amortized Cost 22.7 [4],[5] 22.8 [1],[7]
Fair Value $ 22.5 [4],[5] $ 22.6 [1],[7]
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 2    
Coupon 11.39% [2] 9.99% [3]
Spread 6.00% [2] 5.75% [3]
Principal $ 12.2 [4],[5] $ 14.7 [1],[7]
Amortized Cost 12.2 [4],[5] 14.7 [1],[7]
Fair Value $ 12.1 [4],[5] $ 14.4 [1],[7]
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 3    
Coupon 10.79% [2] 10.73% [3]
Spread 5.75% [2] 6.00% [3]
Principal $ 2.4 [4],[5] $ 12.3 [1],[7]
Amortized Cost 2.4 [4],[5] 12.3 [1],[7]
Fair Value $ 2.4 [4],[5] $ 12.1 [1],[7]
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 4    
Coupon [2] 11.14%  
Spread [2] 5.75%  
Principal [4],[5] $ 14.6  
Amortized Cost [4],[5] 14.6  
Fair Value [4],[5] $ 14.3  
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 5    
Coupon [2] 10.98%  
Spread [2] 5.75%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, Series A common units    
Coupon, PIK 10.00% [2] 10.00% [3]
Shares/Units 4,649,000 4,649,000
Amortized Cost $ 5.5 [5] $ 5.5 [1]
Fair Value $ 10.3 [5] $ 7.1 [1]
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, Series A preferred units    
Coupon, PIK 10.00% [2] 10.00% [3]
Shares/Units 122,142,975 110,561,971
Amortized Cost $ 143.9 [5] $ 125.5 [1]
Fair Value $ 130.9 [5] $ 112.9 [1]
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, Series C common units    
Coupon, PIK 10.00% [2] 10.00% [3]
Shares/Units 6,242,415 5,666,050
Amortized Cost $ 0.8 [5] $ 0.7 [1]
Fair Value $ 13.8 [5] $ 8.6 [1]
Investment, Identifier [Axis]: HighTower Holding, LLC, Senior subordinated loan    
Coupon 6.75% [2] 675.00% [3]
Principal $ 8.1 [5],[6],[11] $ 8.1 [1],[8],[12]
Amortized Cost 6.8 [5],[6],[11] 6.7 [1],[8],[12]
Fair Value $ 7.0 [5],[6],[11] $ 6.7 [1],[8],[12]
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, Co-invest units    
Shares/Units 59,230 59,230
Amortized Cost $ 5.9 [5] $ 5.9 [1]
Fair Value $ 4.0 [5] $ 3.8 [1]
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, First lien senior secured loan    
Coupon 9.70% [2] 8.88% [3]
Spread 4.50% [2] 4.50% [3]
Principal $ 7.1 [4],[5],[11] $ 11.9 [1],[7],[12]
Amortized Cost 6.7 [4],[5],[11] 11.3 [1],[7],[12]
Fair Value 6.8 [4],[5],[11] $ 10.9 [1],[7],[12]
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, First lien senior secured revolving loan    
Coupon [3]   8.13%
Spread [3]   3.75%
Principal 0.0 [16] $ 1.0 [1],[14]
Amortized Cost 0.0 [16] 1.0 [1],[14]
Fair Value $ 0.0 [16] $ 0.9 [1],[14]
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, Second lien senior secured loan    
Coupon 13.39% [2] 12.72% [3]
Spread 8.00% [2] 8.00% [3]
Principal $ 70.4 [4],[5] $ 70.4 [1],[7]
Amortized Cost 70.4 [4],[5] 70.4 [1],[7]
Fair Value $ 66.9 [4],[5] $ 64.0 [1],[7]
Investment, Identifier [Axis]: Hometown Food Company, First lien senior secured revolving loan    
Coupon [3]   9.39%
Spread [3]   5.00%
Principal [1],[7],[14]   $ 0.8
Amortized Cost [1],[7],[14]   0.8
Fair Value [1],[7],[14]   $ 0.8
Investment, Identifier [Axis]: Honor Technology, Inc., First lien senior secured loan    
Coupon 15.28% [2] 14.38% [3]
Spread 10.00% [2] 10.00% [3]
Principal $ 2.5 [4],[5] $ 2.5 [1],[7]
Amortized Cost 2.4 [4],[5] 2.4 [1],[7]
Fair Value $ 2.3 [4],[5] $ 2.3 [1],[7]
Investment, Identifier [Axis]: Honor Technology, Inc., Warrant to purchase shares of Series D-2 preferred stock    
Shares/Units 133,333  
Amortized Cost [5] $ 0.1  
Fair Value [5] $ 0.0  
Investment, Identifier [Axis]: Honor Technology, Inc., Warrant to purchase shares of series D-2 preferred stock    
Shares/Units   133,333
Amortized Cost [1]   $ 0.1
Fair Value [1]   $ 0.0
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, Common units    
Shares/Units   4,243,657
Amortized Cost [1]   $ 8.8
Fair Value [1]   $ 5.5
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, Company units    
Shares/Units 4,246,457  
Amortized Cost [5] $ 8.8  
Fair Value [5] $ 7.1  
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured loan    
Coupon 11.04% [2] 10.23% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 60.0 [4],[5] $ 60.4 [1],[7]
Amortized Cost 60.0 [4],[5] 60.4 [1],[7]
Fair Value $ 56.4 [4],[5] $ 56.1 [1],[7]
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured revolving loan    
Coupon [3]   10.23%
Spread [3]   5.50%
Principal [1],[7]   $ 9.4
Amortized Cost [1],[7]   9.4
Fair Value [1],[7]   $ 8.7
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured revolving loan 1    
Coupon [2] 11.04%  
Spread [2] 5.50%  
Principal [4],[5] $ 11.7  
Amortized Cost [4],[5] 11.7  
Fair Value [4],[5] $ 11.0  
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured revolving loan 2    
Coupon [2] 12.75%  
Spread [2] 4.50%  
Principal [4],[5] $ 1.3  
Amortized Cost [4],[5] 1.3  
Fair Value [4],[5] $ 1.2  
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, Senior subordinated loan    
Coupon, PIK 10.00% [2] 10.00% [3]
Principal $ 104.6 [5] $ 99.5 [1]
Amortized Cost 104.6 [5] 99.5 [1]
Fair Value $ 87.8 [5] $ 82.6 [1]
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured loan    
Coupon [2] 10.38%  
Spread [2] 5.25%  
Principal [4],[5] $ 0.5  
Amortized Cost [4],[5] 0.5  
Fair Value [4],[5] $ 0.5  
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured loan 1    
Coupon [3]   9.65%
Spread [3]   5.25%
Principal [1],[7]   $ 23.5
Amortized Cost [1],[7]   23.5
Fair Value [1],[7]   $ 23.3
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured loan 2    
Coupon [3]   9.71%
Spread [3]   5.50%
Principal [1],[7]   $ 0.4
Amortized Cost [1],[7]   0.4
Fair Value [1],[7]   $ 0.4
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured revolving loan    
Coupon [2] 10.35%  
Spread [2] 5.25%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, L.P., Class A units    
Shares/Units 12,501 10,000
Amortized Cost $ 12.5 [5] $ 10.0 [1]
Fair Value $ 16.0 [5] $ 12.5 [1]
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, L.P., First lien senior secured loan    
Coupon 11.38% [2] 10.63% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 4.2 [4],[5] $ 3.5 [1],[7]
Amortized Cost 4.2 [4],[5] 3.5 [1],[7]
Fair Value 4.2 [4],[5] 3.5 [1],[7]
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, L.P., First lien senior secured revolving loan    
Principal 0.0 [16] 0.0 [15]
Amortized Cost 0.0 [16] 0.0 [15]
Fair Value $ 0.0 [16] $ 0.0 [15]
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured loan    
Coupon 10.88% [2] 10.08% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 34.9 [4],[5] $ 35.0 [1],[7]
Amortized Cost 34.9 [4],[5] 35.0 [1],[7]
Fair Value $ 33.5 [4],[5] $ 34.7 [1],[7]
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan 1    
Coupon 10.75% [2] 12.00% [3]
Spread 5.50% [2] 4.50% [3]
Principal $ 2.0 [4],[5] $ 3.0 [1],[7]
Amortized Cost 2.0 [4],[5] 3.0 [1],[7]
Fair Value $ 1.9 [4],[5] $ 2.9 [1],[7]
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan 2    
Coupon 12.75% [2] 9.88% [3]
Spread 4.50% [2] 5.50% [3]
Principal $ 2.8 [4],[5] $ 1.1 [1],[7]
Amortized Cost 2.8 [4],[5] 1.1 [1],[7]
Fair Value $ 2.7 [4],[5] $ 1.1 [1],[7]
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan 3    
Coupon [3]   12.00%
Spread [3]   4.50%
Principal [1],[7]   $ 0.8
Amortized Cost [1],[7]   0.8
Fair Value [1],[7]   $ 0.8
Investment, Identifier [Axis]: IV Rollover Holdings, LLC, Class B units    
Shares/Units 170,490 170,490
Amortized Cost $ 0.0 [5] $ 0.0
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: IV Rollover Holdings, LLC, Class X units    
Shares/Units 5,000,000 5,000,000
Amortized Cost $ 2.0 [5] $ 2.0 [1]
Fair Value 2.1 [5] 2.1 [1]
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation    
Fair Value $ 64.0 $ 47.8
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Class A common stock    
Shares/Units 48,544 48,082
Amortized Cost $ 13.5 $ 0.0
Fair Value $ 47.4 $ 0.1
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Class B common stock    
Shares/Units   431,055
Amortized Cost   $ 0.1
Fair Value   $ 1.3
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Senior subordinated loan    
Coupon 14.00% [2] 14.00% [3]
Principal $ 16.6 [5] $ 16.6 [1]
Amortized Cost 16.6 [5] 16.5 [1]
Fair Value $ 16.6 [5] $ 16.6 [1]
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Series A preferred stock    
Coupon, PIK [3]   8.00%
Shares/Units   73,804,135
Amortized Cost   $ 1.5
Fair Value   $ 29.8
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 1    
Coupon 12.99% [2] 13.98% [3]
Coupon, PIK [3]   1.50%
Spread 7.75% [2] 9.25% [3]
Principal $ 1.3 [4],[5] $ 102.7 [1],[7]
Amortized Cost 1.3 [4],[5] 102.7 [1],[7]
Fair Value $ 1.1 [4],[5] $ 92.4 [1],[7]
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 2    
Coupon 12.99% [2] 12.48% [3]
Coupon, PIK [3]   0.27%
Spread 7.75% [2] 7.75% [3]
Principal $ 117.1 [4],[5] $ 14.1 [1],[7]
Amortized Cost 116.6 [4],[5] 14.1 [1],[7]
Fair Value $ 99.5 [4],[5] $ 12.6 [1],[7]
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 3    
Coupon 12.99% [2] 12.48% [3]
Coupon, PIK [3]   0.27%
Spread 7.75% [2] 7.75% [3]
Principal $ 5.0 [4],[5] $ 5.0 [1],[7]
Amortized Cost 5.0 [4],[5] 5.0 [1],[7]
Fair Value $ 4.3 [4],[5] $ 4.5 [1],[7]
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 4    
Coupon [3]   13.98%
Coupon, PIK [3]   0.30%
Spread [3]   9.25%
Principal [1],[7]   $ 1.3
Amortized Cost [1],[7]   1.3
Fair Value [1],[7]   $ 1.1
Investment, Identifier [Axis]: Imprivata, Inc., Second lien senior secured loan    
Coupon 11.35% [2] 10.57% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 16.1 [4],[5] $ 16.1 [1],[7]
Amortized Cost 16.0 [4],[5] 15.9 [1],[7]
Fair Value $ 15.0 [4],[5] $ 15.1 [1],[7]
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., Class A units    
Shares/Units 9,524,000 9,524,000
Amortized Cost $ 9.5 [5] $ 9.5 [1]
Fair Value $ 10.8 [5] $ 9.5 [1]
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., First lien senior secured loan    
Coupon [3]   11.40%
Spread [3]   6.75%
Principal [1],[7]   $ 11.4
Amortized Cost [1],[7]   11.4
Fair Value [1],[7]   $ 11.1
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., First lien senior secured loan 1    
Coupon [2] 12.09%  
Spread [2] 6.75%  
Principal [4],[5] $ 12.7  
Amortized Cost [4],[5] 12.7  
Fair Value [4],[5] $ 12.7  
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., First lien senior secured loan 2    
Coupon [2] 11.79%  
Spread [2] 6.75%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.7  
Fair Value [4],[5] $ 0.7  
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., First lien senior secured revolving loan    
Coupon [2] 14.00%  
Spread [2] 5.75%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: Inmar, Inc., First lien senior secured loan    
Coupon [2] 10.58%  
Spread [2] 5.50%  
Principal [4],[5] $ 20.1  
Amortized Cost [4],[5] 19.1  
Fair Value [4],[5] $ 19.4  
Investment, Identifier [Axis]: Inmar, Inc., Second lien senior secured loan    
Coupon [3]   12.38%
Spread [3]   8.00%
Principal [1],[7]   $ 28.3
Amortized Cost [1],[7]   28.2
Fair Value [1],[7]   $ 26.6
Investment, Identifier [Axis]: Inszone Mid, LLC and INSZ Holdings, LLC, First lien senior secured loan    
Coupon 11.95% [2] 11.33% [3]
Spread 6.75% [2] 7.00% [3]
Principal $ 20.9 [4],[5] $ 17.6 [1],[7]
Amortized Cost 20.9 [4],[5] 17.6 [1],[7]
Fair Value $ 20.9 [4],[5] $ 17.1 [1],[7]
Investment, Identifier [Axis]: Inszone Mid, LLC and INSZ Holdings, LLC, First lien senior secured revolving loan    
Coupon [2] 11.96%  
Spread [2] 6.75%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: Inszone Mid, LLC and INSZ Holdings, LLC, Limited partnership interests    
Shares/Units 265,285 246,143
Amortized Cost $ 1.7 $ 1.7
Fair Value 1.8 1.7
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P.    
Fair Value $ 2,151.0 $ 2,201.1
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P., Member interest    
Shares (as a percent) 100.00% [6] 100.00%
Amortized Cost $ 1,700.5 [5],[6] $ 1,547.5 [8]
Fair Value $ 1,884.0 [5],[6] $ 1,701.1 [8]
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P., Subordinated revolving loan    
Coupon 11.55% [2] 11.01% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 267.0 [4],[5],[6] $ 500.0 [7],[8]
Amortized Cost 267.0 [4],[5],[6] 500.0 [7],[8]
Fair Value 267.0 [4],[5],[6] 500.0 [7],[8]
Investment, Identifier [Axis]: JDC Healthcare Management, LLC, First lien senior secured loan    
Principal 41.5 [5],[9] 40.9 [1],[10]
Amortized Cost 31.4 [5],[9] 31.4 [1],[10]
Fair Value 19.9 [5],[9] 22.1 [1],[10]
Investment, Identifier [Axis]: JDC Healthcare Management, LLC, First lien senior secured revolving loan    
Principal 4.9 [5],[9] 4.8 [1],[10]
Amortized Cost 3.7 [5],[9] 3.7 [1],[10]
Fair Value $ 2.3 [5],[9] $ 2.6 [1],[10]
Investment, Identifier [Axis]: JWC/KI Holdings, LLC, Membership units    
Shares/Units 5,000 5,000
Amortized Cost $ 5.0 [5] $ 5.0 [1]
Fair Value $ 10.7 [5] $ 9.0 [1]
Investment, Identifier [Axis]: Jenny C Acquisition, Inc., Senior subordinated loan    
Coupon, PIK 8.00% [2] 8.00% [3]
Principal $ 1.6 [5] $ 1.6 [1]
Amortized Cost 1.6 [5] 1.6 [1]
Fair Value $ 1.6 [5] $ 1.6 [1]
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., First lien senior secured loan    
Coupon [3]   10.65%
Coupon, PIK [3]   4.50%
Spread [3]   6.00%
Principal [1],[7]   $ 19.2
Amortized Cost [1],[7]   18.3
Fair Value [1],[7]   $ 18.8
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., First lien senior secured loan 1    
Coupon [2] 11.62%  
Spread [2] 6.25%  
Principal [4],[5] $ 19.1  
Amortized Cost [4],[5] 18.4  
Fair Value [4],[5] $ 19.1  
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., First lien senior secured loan 2    
Coupon [2] 11.62%  
Spread [2] 6.25%  
Principal [4],[5] $ 4.0  
Amortized Cost [4],[5] 3.6  
Fair Value [4],[5] $ 4.0  
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., Series A convertible preferred stock    
Shares/Units 144,210 144,211
Amortized Cost $ 4.2 [5] $ 4.3 [1]
Fair Value $ 4.0 [5] $ 5.5 [1]
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., Warrant to purchase shares of common stock    
Shares/Units 93,577 76,491
Amortized Cost $ 1.5 [5] $ 1.0 [1]
Fair Value $ 2.6 [5] 1.3 [1]
Investment, Identifier [Axis]: Joyce Lane Capital LLC and Joyce Lane Financing SPV LLC (fka Ciena Capital LLC)    
Fair Value   $ 0.0
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, Common units    
Shares/Units   799,000
Amortized Cost [1]   $ 0.8
Fair Value [1]   $ 2.3
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 1    
Coupon [3]   9.73%
Spread [3]   5.00%
Principal [1],[7]   $ 50.4
Amortized Cost [1],[7]   50.4
Fair Value [1],[7]   $ 50.4
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 2    
Coupon [3]   9.73%
Spread [3]   5.00%
Principal [1],[7]   $ 2.3
Amortized Cost [1],[7]   2.3
Fair Value [1],[7]   $ 2.3
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 3    
Coupon [3]   9.54%
Spread [3]   5.00%
Principal [1],[7]   $ 0.2
Amortized Cost [1],[7]   0.2
Fair Value [1],[7]   $ 0.2
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan    
Coupon [3]   9.72%
Coupon, PIK [3]   1.00%
Spread [3]   5.00%
Principal [1],[7]   $ 3.2
Amortized Cost [1],[7]   3.2
Fair Value [1],[7]   $ 3.1
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan 1    
Coupon [2] 10.24%  
Coupon, PIK [2] 1.25%  
Spread [2] 5.00%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.7  
Fair Value [4],[5] $ 0.7  
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan 2    
Coupon [2] 12.25%  
Coupon, PIK [2] 1.25%  
Spread [2] 4.00%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan 3    
Coupon [2] 10.40%  
Coupon, PIK [2] 1.25%  
Spread [2] 5.00%  
Principal [4],[5] $ 1.3  
Amortized Cost [4],[5] 1.3  
Fair Value [4],[5] $ 1.3  
Investment, Identifier [Axis]: KNPC HoldCo, LLC, First lien senior secured loan 1    
Coupon 10.70% [2] 9.92% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 5.6 [4],[5] $ 5.6 [7]
Amortized Cost 5.6 [4],[5] 5.6 [7]
Fair Value $ 5.5 [4],[5] $ 5.5 [7]
Investment, Identifier [Axis]: KNPC HoldCo, LLC, First lien senior secured loan 2    
Coupon 11.74% [2] 11.42% [3]
Spread 6.75% [2] 7.00% [3]
Principal $ 1.3 [4],[5] $ 1.3 [1],[7]
Amortized Cost 1.3 [4],[5] 1.3 [1],[7]
Fair Value $ 1.3 [4],[5] $ 1.3 [1],[7]
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, Class A units    
Shares/Units 13,292 13,292
Amortized Cost $ 1.1 $ 1.1
Fair Value $ 4.6 $ 5.2
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, First lien senior secured loan 1    
Coupon 10.70% [2] 9.92% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 11.7 [4],[5] $ 12.6 [1],[7]
Amortized Cost 11.7 [4],[5] 12.6 [1],[7]
Fair Value $ 11.7 [4],[5] $ 12.6 [1],[7]
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, First lien senior secured loan 2    
Coupon 10.70% [2] 9.92% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 3.1 [4],[5] $ 3.3 [1],[7]
Amortized Cost 3.1 [4],[5] 3.3 [1],[7]
Fair Value $ 3.1 [4],[5] $ 3.3 [1],[7]
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., First lien senior secured loan    
Coupon 11.35% [2] 10.33% [3]
Coupon, PIK [2] 2.50%  
Spread 6.25% [2] 5.75% [3]
Principal $ 167.7 [4],[5] $ 167.0 [1],[7]
Amortized Cost 167.7 [4],[5] 167.0 [1],[7]
Fair Value $ 164.4 [4],[5] $ 162.0 [1],[7]
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., First lien senior secured revolving loan    
Coupon [2] 11.35%  
Coupon, PIK [2] 2.50%  
Spread [2] 6.25%  
Principal [4],[5],[13] $ 4.8  
Amortized Cost [4],[5],[13] 4.8  
Fair Value [4],[5],[13] $ 4.7  
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., Perpetual preferred stock    
Coupon, PIK [2] 11.75%  
Shares/Units 38,798  
Amortized Cost [5] $ 43.6  
Fair Value [5] $ 42.7  
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., Preferred stock    
Coupon, PIK [3]   11.75%
Shares/Units   38,797
Amortized Cost [1]   $ 41.2
Fair Value [1]   $ 40.0
Investment, Identifier [Axis]: Kellermeyer Bergensons Services, LLC, First lien senior secured loan 1    
Coupon 11.27% [2] 10.41% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 56.5 [4],[5] $ 56.8 [1],[7]
Amortized Cost 56.3 [4],[5] 56.6 [1],[7]
Fair Value $ 49.1 [4],[5] $ 51.1 [1],[7]
Investment, Identifier [Axis]: Kellermeyer Bergensons Services, LLC, First lien senior secured loan 2    
Coupon 11.27% [2] 10.41% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., Class A units    
Shares/Units 4,549,000 4,549,000
Amortized Cost $ 4.6 [5] $ 4.5 [1]
Fair Value $ 8.4 [5] $ 7.0 [1]
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., First lien senior secured loan    
Coupon 9.64% [2] 8.98% [3]
Spread 4.25% [2] 4.25% [3]
Principal $ 40.4 [4],[5] $ 40.6 [1],[7]
Amortized Cost 40.4 [4],[5] 40.6 [1],[7]
Fair Value 40.4 [4],[5] 39.8 [1],[7]
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., First lien senior secured revolving loan    
Principal 0.0 [16] 0.0 [15]
Amortized Cost 0.0 [16] 0.0 [15]
Fair Value $ 0.0 [16] $ 0.0 [15]
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Senior subordinated loan 1    
Coupon, PIK [3]   10.00%
Principal [1]   $ 60.0
Amortized Cost [1]   57.6
Fair Value [1]   $ 58.8
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Senior subordinated loan 2    
Coupon, PIK [3]   10.00%
Principal [1]   $ 8.0
Amortized Cost [1]   8.0
Fair Value [1]   $ 7.8
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Warrant to purchase Class C interests    
Shares/Units   24.7581
Amortized Cost [1]   $ 3.6
Fair Value [1]   $ 8.3
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P., First lien senior secured loan    
Coupon [3]   10.73%
Spread [3]   6.50%
Principal [1],[7]   $ 35.7
Amortized Cost [1],[7]   35.7
Fair Value [1],[7]   $ 34.6
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P., First lien senior secured loan 1    
Coupon [2] 11.70%  
Spread [2] 6.50%  
Principal [4],[5] $ 35.9  
Amortized Cost [4],[5] 35.9  
Fair Value [4],[5] $ 35.6  
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P., First lien senior secured loan 2    
Coupon [2] 11.91%  
Spread [2] 6.50%  
Principal [4],[5] $ 4.3  
Amortized Cost [4],[5] 4.3  
Fair Value [4],[5] $ 4.2  
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P., Limited partnership interests    
Shares/Units 9,682,047 9,674,000
Amortized Cost $ 9.7 [5] $ 9.7 [1]
Fair Value $ 10.4 [5] $ 9.7 [1]
Investment, Identifier [Axis]: LJP Purchaser, Inc. and LJP Topco, LP, Class A units    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 5,098,000 5,098,000
Amortized Cost $ 5.4 [5] $ 5.2 [1]
Fair Value $ 5.2 [5] $ 5.4 [1]
Investment, Identifier [Axis]: LJP Purchaser, Inc. and LJP Topco, LP, First lien senior secured loan    
Coupon 11.59% [2] 10.44% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 8.5 [4],[5] $ 8.5 [1],[7]
Amortized Cost 8.5 [4],[5] 8.5 [1],[7]
Fair Value $ 8.4 [4],[5] $ 8.3 [1],[7]
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Membership units    
Shares/Units 3,275,000 3,275,000
Amortized Cost $ 3.3 [6] $ 3.3 [8]
Fair Value $ 2.1 [6] $ 3.0 [8]
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan 1    
Coupon 11.00% [2] 10.50% [3]
Coupon, PIK [2] 0.50%  
Principal $ 37.0 [5],[6] $ 3.0 [1],[8]
Amortized Cost 37.0 [5],[6] 3.0 [1],[8]
Fair Value $ 35.9 [5],[6] $ 3.0 [1],[8]
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan 2    
Coupon 10.50% [2] 10.50% [3]
Principal $ 3.0 [5],[6] $ 37.0 [1],[8]
Amortized Cost 3.0 [5],[6] 37.0 [1],[8]
Fair Value $ 2.9 [5],[6] $ 36.6 [1],[8]
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan 1    
Coupon [3]   10.59%
Spread [3]   6.38%
Principal [1],[7]   $ 21.2
Amortized Cost [1],[7]   21.2
Fair Value [1],[7]   $ 21.6
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan 2    
Coupon [3]   10.89%
Spread [3]   6.38%
Principal [1],[7]   $ 6.7
Amortized Cost [1],[7]   6.7
Fair Value [1],[7]   $ 6.8
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan 3    
Coupon [3]   10.42%
Spread [3]   6.38%
Principal [1],[7]   $ 6.1
Amortized Cost [1],[7]   6.1
Fair Value [1],[7]   $ 6.2
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, Membership interest    
Shares/Units   2,771,000
Amortized Cost   $ 2.8
Fair Value   $ 15.5
Investment, Identifier [Axis]: LTG Acquisition, Inc., Class A membership units    
Shares/Units 5,000 5,000
Amortized Cost $ 5.1 $ 5.1
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, Class A units    
Shares/Units 3,099,335 3,099,335
Amortized Cost $ 4.6 [5] $ 4.6 [1]
Fair Value $ 2.9 [5] $ 4.5 [1]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 1    
Coupon 11.07% [2] 9.98% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.5 [4],[5] $ 23.6 [1],[7]
Amortized Cost 0.5 [4],[5] 24.1 [1],[7]
Fair Value $ 0.5 [4],[5] $ 22.7 [1],[7]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 2    
Coupon 10.82% [2] 8.73% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 40.0 [4],[5] $ 16.7 [7]
Amortized Cost 40.0 [4],[5] 16.7 [7]
Fair Value $ 36.4 [4],[5] $ 16.0 [7]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 3    
Coupon 10.89% [2] 9.55% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 4.4 [1],[7]
Amortized Cost 0.1 [4],[5] 4.4 [1],[7]
Fair Value $ 0.1 [4],[5] $ 4.2 [1],[7]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 4    
Coupon 10.99% [2] 8.73% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 1.5 [4],[5] $ 0.1 [1],[7]
Amortized Cost 1.5 [4],[5] 0.1 [1],[7]
Fair Value $ 1.3 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 5    
Coupon [2] 10.83%  
Spread [2] 5.75%  
Principal [4],[5] $ 2.9  
Amortized Cost [4],[5] 2.9  
Fair Value [4],[5] $ 2.6  
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured revolving loan    
Coupon [3]   12.25%
Spread [3]   4.75%
Principal [1],[7]   $ 8.8
Amortized Cost [1],[7]   8.8
Fair Value [1],[7]   $ 8.4
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured revolving loan 1    
Coupon [2] 11.16%  
Spread [2] 5.75%  
Principal [4],[5] $ 13.4  
Amortized Cost [4],[5] 13.4  
Fair Value [4],[5] $ 12.2  
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured revolving loan 2    
Coupon [2] 13.00%  
Spread [2] 4.75%  
Principal [4],[5] $ 4.6  
Amortized Cost [4],[5] 4.6  
Fair Value [4],[5] $ 4.2  
Investment, Identifier [Axis]: LeanTaaS Holdings, Inc., First lien senior secured loan    
Coupon 12.74% [2] 12.08% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 38.8 [4],[5] $ 31.8 [1],[7]
Amortized Cost 38.8 [4],[5] 31.8 [1],[7]
Fair Value $ 38.8 [4],[5] $ 31.2 [1],[7]
Investment, Identifier [Axis]: Leviathan Intermediate Holdco, LLC and Leviathan Holdings, L.P., First lien senior secured loan    
Coupon 12.89% [2] 12.54% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 16.1 [4],[5] $ 16.2 [1],[7]
Amortized Cost 16.1 [4],[5] 16.2 [1],[7]
Fair Value $ 16.1 [4],[5] $ 15.8 [1],[7]
Investment, Identifier [Axis]: Leviathan Intermediate Holdco, LLC and Leviathan Holdings, L.P., First lien senior secured revolving loan    
Coupon 12.89% [2] 12.54% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 0.2 [4],[5] $ 0.7 [1],[7]
Amortized Cost 0.2 [4],[5] 0.7 [1],[7]
Fair Value $ 0.2 [4],[5] $ 0.7 [1],[7]
Investment, Identifier [Axis]: Leviathan Intermediate Holdco, LLC and Leviathan Holdings, L.P., Limited partnership interests    
Shares/Units 1,972,732 1,972,732
Amortized Cost $ 2.0 $ 2.0
Fair Value $ 1.7 $ 2.0
Investment, Identifier [Axis]: Lew's Intermediate Holdings, LLC, First lien senior secured loan    
Coupon 10.26% [2] 9.40% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 1.0 [4],[5] $ 1.0 [1],[7]
Amortized Cost 1.0 [4],[5] 1.0 [1],[7]
Fair Value $ 0.9 [4],[5] $ 0.9 [1],[7]
Investment, Identifier [Axis]: Lido Advisors, LLC, First lien senior secured loan    
Coupon [2] 11.39%  
Spread [2] 6.00%  
Principal [4],[5] $ 1.0  
Amortized Cost [4],[5] 1.0  
Fair Value [4],[5] $ 1.0  
Investment, Identifier [Axis]: Lido Advisors, LLC, First lien senior secured revolving loan    
Coupon 11.63% [2] 9.05% [3]
Spread 6.25% [2] 4.50% [3]
Principal $ 0.4 [4],[5] $ 0.4 [1],[7]
Amortized Cost 0.4 [4],[5] 0.4 [1],[7]
Fair Value $ 0.3 [4],[5] $ 0.4 [1],[7]
Investment, Identifier [Axis]: LifeStyles Bidco Ltd., Lifestyles Intermediate Holdco Ltd. and LifeStyles Parent, L.P., Class B common units    
Shares/Units 32,105 32,105
Amortized Cost $ 0.0 [5],[6] $ 0.0 [1],[8]
Fair Value $ 0.8 [5],[6] $ 0.0 [1],[8]
Investment, Identifier [Axis]: LifeStyles Bidco Ltd., Lifestyles Intermediate Holdco Ltd. and LifeStyles Parent, L.P., First lien senior secured loan    
Coupon 11.99% [2] 11.15% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 18.6 [4],[5],[6] $ 18.6 [1],[7],[8]
Amortized Cost 18.6 [4],[5],[6] 18.6 [1],[7],[8]
Fair Value $ 18.6 [4],[5],[6] $ 18.2 [1],[7],[8]
Investment, Identifier [Axis]: LifeStyles Bidco Ltd., Lifestyles Intermediate Holdco Ltd. and LifeStyles Parent, L.P., Preferred units    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 3,178 3,178
Amortized Cost $ 3.3 [5],[6] $ 3.2 [1],[8]
Fair Value $ 3.3 [5],[6] $ 3.2 [1],[8]
Investment, Identifier [Axis]: Lifescan Global Corporation, First lien senior secured loan    
Coupon 11.25% [2] 9.74% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 13.2 [4],[5],[11] $ 14.3 [1]
Amortized Cost 12.5 [4],[5],[11] 13.7 [1]
Fair Value $ 10.6 [4],[5],[11] $ 10.3 [1]
Investment, Identifier [Axis]: Lifescan Global Corporation, Second lien senior secured loan    
Coupon 14.67% [2] 13.24% [3]
Spread 9.50% [2] 9.50% [3]
Principal $ 0.2 [4],[5],[11] $ 0.2 [1]
Amortized Cost 0.2 [4],[5],[11] 0.2 [1]
Fair Value $ 0.1 [4],[5],[11] $ 0.2 [1]
Investment, Identifier [Axis]: Lightbeam Bidco, Inc., First lien senior secured loan    
Coupon [2] 11.43%  
Spread [2] 6.25%  
Principal [4],[5] $ 4.6  
Amortized Cost [4],[5] 4.6  
Fair Value [4],[5] 4.5  
Investment, Identifier [Axis]: Lightbeam Bidco, Inc., First lien senior secured revolving loan    
Principal [16] 0.0  
Amortized Cost [16] 0.0  
Fair Value [16] $ 0.0  
Investment, Identifier [Axis]: Lower ACS, Inc., First lien senior secured loan    
Coupon 10.70% [2] 10.13% [3]
Spread 5.50% [2] 5.75% [3]
Principal $ 0.8 [4],[5] $ 5.4 [1],[7]
Amortized Cost 0.8 [4],[5] 5.4 [1],[7]
Fair Value $ 0.8 [4],[5] $ 5.4 [1],[7]
Investment, Identifier [Axis]: Lower ACS, Inc., First lien senior secured revolving loan    
Coupon [2] 10.70%  
Spread [2] 5.50%  
Principal [4],[5] $ 1.5  
Amortized Cost [4],[5] 1.5  
Fair Value [4],[5] $ 1.5  
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., First lien senior secured loan    
Coupon 8.70% [2] 8.23% [3]
Spread 3.50% [2] 3.50% [3]
Principal $ 15.2 [4],[5],[11] $ 14.3 [1],[7]
Amortized Cost 14.5 [4],[5],[11] 13.4 [1],[7]
Fair Value $ 15.2 [4],[5],[11] $ 12.5 [1],[7]
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., Second lien senior secured loan 1    
Coupon 13.66% [2] 13.73% [3]
Spread 8.50% [2] 9.00% [3]
Principal $ 68.4 [4],[5] $ 68.4 [1],[7]
Amortized Cost 68.4 [4],[5] 68.4 [1],[7]
Fair Value $ 68.4 [4],[5] $ 63.6 [1],[7]
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., Second lien senior secured loan 2    
Coupon 13.66% [2] 13.73% [3]
Spread 8.50% [2] 9.00% [3]
Principal $ 23.6 [4],[5] $ 23.6 [1],[7]
Amortized Cost 23.6 [4],[5] 23.6 [1],[7]
Fair Value $ 23.6 [4],[5] $ 22.0 [1],[7]
Investment, Identifier [Axis]: ME Equity LLC, Common stock    
Shares/Units 3,000,000 3,000,000
Amortized Cost $ 3.0 [5] $ 3.0 [1]
Fair Value $ 4.5 [5] $ 4.5 [1]
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 1    
Coupon 10.84% [2] 10.23% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 46.8 [4],[5] $ 47.1 [7]
Amortized Cost 46.8 [4],[5] 47.1 [7]
Fair Value $ 45.4 [4],[5] $ 45.6 [7]
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 2    
Coupon 10.83% [2] 10.23% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 1.0 [4],[5] $ 17.4 [1],[7]
Amortized Cost 1.0 [4],[5] 17.4 [1],[7]
Fair Value $ 0.9 [4],[5] 16.8 [1],[7]
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 3    
Coupon [2] 10.84%  
Spread [2] 5.50%  
Principal [4],[5] $ 20.5  
Amortized Cost [4],[5] 20.5  
Fair Value [4],[5] 19.9  
Investment, Identifier [Axis]: MailSouth, Inc., First lien senior secured loan    
Principal 8.7 [5],[9] 8.7 [1],[10]
Amortized Cost 5.8 [5],[9] 5.8 [1],[10]
Fair Value $ 1.7 [5],[9] $ 3.9 [1],[10]
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P., Class A units    
Coupon, PIK 9.00% [2] 9.00% [3]
Shares/Units 2,539 2,539
Amortized Cost $ 3.2 [5] $ 3.1 [1]
Fair Value $ 4.8 [5] $ 3.6 [1]
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P., Class B units    
Shares/Units 570,625 570,625
Amortized Cost $ 0.0 [5] $ 0.0
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P., First lien senior secured loan    
Coupon 12.62% [2] 11.98% [3]
Spread 7.38% [2] 7.25% [3]
Principal $ 0.1 [4],[5] $ 30.3 [1],[7]
Amortized Cost 0.1 [4],[5] 30.3 [1],[7]
Fair Value $ 0.1 [4],[5] $ 30.3 [1],[7]
Investment, Identifier [Axis]: Management Consulting & Research LLC, First lien senior secured loan    
Coupon [3]   10.94%
Spread [3]   6.00%
Principal [1],[7]   $ 1.0
Amortized Cost [1],[7]   1.0
Fair Value [1],[7]   $ 1.0
Investment, Identifier [Axis]: Manna Pro Products, LLC, First lien senior secured revolving loan    
Coupon 11.20% [2] 10.14% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 5.1 [4],[5] $ 5.1 [1],[7]
Amortized Cost 5.1 [4],[5] 5.1 [1],[7]
Fair Value $ 4.6 [4],[5] $ 4.7 [1],[7]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, Class A common units    
Shares/Units 5,796 5,578
Amortized Cost $ 6.1 [5] $ 6.1 [1]
Fair Value $ 9.1 [5] $ 10.2 [1]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 1    
Coupon 11.64% [2] 10.98% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 0.4 [4],[5] $ 6.5 [1],[7]
Amortized Cost 0.4 [4],[5] 6.5 [1],[7]
Fair Value $ 0.4 [4],[5] $ 6.5 [1],[7]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 2    
Coupon 11.64% [2] 10.91% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 0.2 [4],[5] $ 2.6 [1],[7]
Amortized Cost 0.2 [4],[5] 2.6 [1],[7]
Fair Value $ 0.2 [4],[5] $ 2.5 [1],[7]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 3    
Coupon [3]   10.94%
Spread [3]   6.25%
Principal [1],[7]   $ 2.1
Amortized Cost [1],[7]   2.1
Fair Value [1],[7]   $ 2.1
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 4    
Coupon [3]   10.98%
Spread [3]   6.25%
Principal [1],[7]   $ 0.3
Amortized Cost [1],[7]   0.3
Fair Value [1],[7]   $ 0.3
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 1    
Coupon 11.39% [2] 10.80% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 0.2 [4],[5] $ 0.7 [1],[7]
Amortized Cost 0.2 [4],[5] 0.7 [1],[7]
Fair Value $ 0.2 [4],[5] $ 0.7 [1],[7]
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 2    
Coupon 11.31% [2] 11.04% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 1.5 [4],[5] $ 0.2 [1],[7]
Amortized Cost 1.5 [4],[5] 0.2 [1],[7]
Fair Value $ 1.5 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 3    
Coupon [2] 11.54%  
Spread [2] 6.00%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., Limited partnership units    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 1,929,237 1,929,237
Amortized Cost $ 2.4 [5] $ 2.3 [1]
Fair Value $ 3.4 [5] $ 2.6 [1]
Investment, Identifier [Axis]: Maverick Acquisition, Inc., First lien senior secured loan    
Coupon 11.44% [2] 10.98% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 27.5 [4],[5] $ 27.6 [1],[7]
Amortized Cost 27.5 [4],[5] 27.6 [1],[7]
Fair Value $ 23.3 [4],[5] $ 25.4 [1],[7]
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP, Class A-1 units    
Shares/Units 24,586 24,586
Amortized Cost $ 24.6 [5] $ 24.6 [1]
Fair Value 35.0 [5] 33.1 [1]
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP, First lien senior secured revolving loan    
Principal [15]   0.0
Amortized Cost 0.0 [16] 0.0 [15]
Fair Value $ 0.0 [16] $ 0.0 [15]
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP, Series A preferred stock    
Coupon [3]   7.00%
Coupon, PIK [2] 7.00%  
Shares/Units 68,601 68,601
Amortized Cost $ 79.7 [5] $ 77.0 [1]
Fair Value $ 79.7 [5] $ 76.6 [1]
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan 1    
Coupon 11.95% [2] 9.43% [3]
Spread 6.75% [2] 5.75% [3]
Principal $ 5.5 [4],[5] $ 84.5 [1],[7],[19]
Amortized Cost 5.5 [4],[5] 84.5 [1],[7],[19]
Fair Value $ 5.5 [4],[5] $ 84.5 [1],[7],[19]
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan 2    
Coupon 11.95% [2] 10.14% [3]
Spread 6.75% [2] 5.75% [3]
Principal $ 84.5 [4],[5],[20] $ 5.5 [1],[7]
Amortized Cost 84.5 [4],[5],[20] 5.5 [1],[7]
Fair Value $ 84.5 [4],[5],[20] $ 5.5 [1],[7]
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan, First Out Tranche    
Coupon 2.00% 2.00%
Principal $ 40.9 $ 40.9
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured revolving loan    
Coupon 11.93% [2] 10.12% [3]
Spread 6.75% [2] 5.75% [3]
Principal $ 0.7 [4],[5] $ 1.9 [1],[7]
Amortized Cost 0.7 [4],[5] 1.9 [1],[7]
Fair Value 0.7 [4],[5] $ 1.9 [1],[7]
Investment, Identifier [Axis]: McLaren Group Limited, Senior preference shares    
Coupon [3]   12.50%
Shares/Units   200,000
Amortized Cost [1],[8]   $ 23.7
Fair Value [1],[8]   $ 26.2
Investment, Identifier [Axis]: McLaren Group Limited, Warrant to purchase units of ordinary shares    
Shares/Units   13,776
Amortized Cost [1],[8]   $ 1.6
Fair Value [1],[8]   $ 0.8
Investment, Identifier [Axis]: McLaren Group Limited, Warrant to purchase units of ordinary shares    
Shares/Units   49,181
Amortized Cost [1],[8]   $ 5.5
Fair Value [1],[8]   2.8
Investment, Identifier [Axis]: Medline Borrower, LP, First lien senior secured revolving loan    
Principal 0.0 [16] 0.0 [15]
Amortized Cost 0.0 [16] 0.0 [15]
Fair Value $ 0.0 [16] $ 0.0 [15]
Investment, Identifier [Axis]: Miami Beckham United LLC, Class A preferred units    
Coupon, PIK 8.50% [2] 8.50% [3]
Shares/Units 85,000 85,000
Amortized Cost $ 98.8 $ 94.7
Fair Value $ 98.8 $ 94.7
Investment, Identifier [Axis]: Miami Beckham United LLC, Class B preferred units    
Coupon, PIK [2] 9.50%  
Shares/Units 42,500  
Amortized Cost $ 42.5  
Fair Value $ 42.5  
Investment, Identifier [Axis]: Micromeritics Instrument Corp., First lien senior secured loan    
Coupon 9.84% [2] 9.65% [3]
Spread 4.50% [2] 4.50% [3]
Principal $ 19.7 [4],[5] $ 20.7 [1],[7]
Amortized Cost 19.7 [4],[5] 20.7 [1],[7]
Fair Value $ 19.7 [4],[5] $ 20.7 [1],[7]
Investment, Identifier [Axis]: Microstar Logistics LLC, Microstar Global Asset Management LLC, MStar Holding Corporation and Kegstar USA Inc., Common stock    
Shares/Units 54,710 54,710
Amortized Cost $ 4.9 [5] $ 4.9 [1]
Fair Value $ 7.4 [5] $ 6.6 [1]
Investment, Identifier [Axis]: Microstar Logistics LLC, Microstar Global Asset Management LLC, MStar Holding Corporation and Kegstar USA Inc., Second lien senior secured loan    
Coupon 15.86% [2] 15.58% [3]
Coupon, PIK 11.20% [2] 11.00% [3]
Spread 11.00% [2] 11.00% [3]
Principal $ 168.3 [4],[5] $ 159.3 [7]
Amortized Cost 168.3 [4],[5] 159.3 [7]
Fair Value $ 168.3 [4],[5] $ 159.3 [7]
Investment, Identifier [Axis]: Microstar Logistics LLC, Microstar Global Asset Management LLC, MStar Holding Corporation and Kegstar USA Inc., Series A preferred stock    
Shares/Units 1,507 1,507
Amortized Cost $ 1.5 [5] $ 1.5 [1]
Fair Value $ 2.9 [5] $ 2.6 [1]
Investment, Identifier [Axis]: Mimecast Borrowerco, Inc. and Magnesium Co- Invest SCSp, First lien senior secured loan 1    
Coupon 10.95% [2] 10.17% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 101.6 [4],[5],[6] $ 102.1 [1],[7],[8]
Amortized Cost 101.6 [4],[5],[6] 102.1 [1],[7],[8]
Fair Value $ 100.6 [4],[5],[6] $ 99.1 [1],[7],[8]
Investment, Identifier [Axis]: Mimecast Borrowerco, Inc. and Magnesium Co- Invest SCSp, First lien senior secured loan 2    
Coupon 10.68% [2] 9.18% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 36.4 [4],[5],[6] $ 34.8 [1],[7],[8]
Amortized Cost 35.4 [4],[5],[6] 35.6 [1],[7],[8]
Fair Value $ 36.0 [4],[5],[6] $ 33.7 [1],[7],[8]
Investment, Identifier [Axis]: Mimecast Borrowerco, Inc. and Magnesium Co- Invest SCSp, Limited partnership interest    
Shares/Units 3,975 3,974
Amortized Cost $ 38.8 [5],[6] $ 38.8 [1],[8]
Fair Value $ 40.2 [5],[6] $ 39.4 [1],[8]
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., First lien senior secured loan    
Coupon 10.70% [2] 9.88% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 35.3 [4],[5] $ 32.5 [1],[7]
Amortized Cost 35.3 [4],[5] 32.5 [1],[7]
Fair Value $ 33.1 [4],[5] $ 30.9 [1],[7]
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., First lien senior secured revolving loan    
Coupon 10.70% [2] 9.88% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 2.9 [4],[5],[13] $ 4.0 [1],[7],[14]
Amortized Cost 2.9 [4],[5],[13] 4.0 [1],[7],[14]
Fair Value $ 2.8 [4],[5],[13] $ 3.8 [1],[7],[14]
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., Limited partner interests    
Shares/Units 9,574,000 9,574,000
Amortized Cost $ 9.6 [5] $ 9.6 [1]
Fair Value $ 7.5 [5] $ 8.8 [1]
Investment, Identifier [Axis]: Mitchell International, Inc., First lien senior secured loan    
Coupon [2] 8.94%  
Spread [2] 3.75%  
Principal [4],[5],[11] $ 0.7  
Amortized Cost [4],[5],[11] 0.7  
Fair Value [4],[5],[11] $ 0.7  
Investment, Identifier [Axis]: Mitchell International, Inc., Second lien senior secured loan    
Coupon 11.69% [2] 11.23% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 98.1 [4],[5],[11] $ 98.1 [1],[7],[12]
Amortized Cost 96.2 [4],[5],[11] 96.1 [1],[7],[12]
Fair Value $ 86.2 [4],[5],[11] $ 81.0 [1],[7],[12]
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, Class A units    
Shares/Units 1,001  
Amortized Cost [5] $ 9.7  
Fair Value [5] $ 12.1  
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured loan 1    
Coupon [2] 11.25%  
Spread [2] 6.00%  
Principal [4],[5] $ 0.9  
Amortized Cost [4],[5] 0.9  
Fair Value [4],[5] $ 0.9  
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured loan 2    
Coupon [2] 11.24%  
Spread [2] 6.00%  
Principal [4],[5] $ 0.5  
Amortized Cost [4],[5] 0.5  
Fair Value [4],[5] $ 0.5  
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured loan 3    
Coupon [2] 11.05%  
Spread [2] 6.00%  
Principal [4],[5] $ 1.4  
Amortized Cost [4],[5] 1.4  
Fair Value [4],[5] $ 1.4  
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured revolving loan    
Coupon [2] 13.25%  
Spread [2] 5.00%  
Principal [4],[5] $ 0.6  
Amortized Cost [4],[5] 0.6  
Fair Value [4],[5] $ 0.6  
Investment, Identifier [Axis]: Monica Holdco (US) Inc., First lien senior secured loan    
Coupon 12.14% [2] 11.48% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 2.6 [4],[5] $ 2.6 [1],[7]
Amortized Cost 2.6 [4],[5] 2.6 [1],[7]
Fair Value $ 2.5 [4],[5] $ 2.5 [1],[7]
Investment, Identifier [Axis]: Monica Holdco (US) Inc., First lien senior secured revolving loan    
Coupon 12.26% [2] 10.99% [3]
Spread 6.75% [2] 6.25% [3]
Principal $ 3.6 [4],[5] $ 2.4 [1],[7],[14]
Amortized Cost 3.6 [4],[5] 2.4 [1],[7],[14]
Fair Value $ 3.5 [4],[5] $ 2.3 [1],[7],[14]
Investment, Identifier [Axis]: Monolith Brands Group, Inc., Series A-1 preferred stock    
Shares/Units 701,255 701,255
Amortized Cost $ 15.5 [5] $ 15.5 [1]
Fair Value $ 15.5 [5] $ 15.5 [1]
Investment, Identifier [Axis]: Moon Valley Nursery of Arizona Retail, LLC, Moon Valley Nursery Farm Holdings, LLC, Moon Valley Nursery RE Holdings LLC, and Stonecourt IV Partners, LP, Limited partnership interests    
Shares/Units 21,939,152 21,939,151
Amortized Cost $ 20.8 $ 20.8
Fair Value $ 34.7 $ 42.9
Investment, Identifier [Axis]: Moonraker AcquisitionCo LLC and Moonraker HoldCo LLC, Class A units    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 45,320 45,320
Amortized Cost $ 4.5 $ 4.5
Fair Value $ 4.5 $ 4.5
Investment, Identifier [Axis]: Moonraker AcquisitionCo LLC and Moonraker HoldCo LLC, First lien senior secured loan    
Coupon 11.08% [2] 10.32% [3]
Spread 5.75% [2] 6.00% [3]
Principal $ 25.0 [4],[5] $ 25.1 [1],[7]
Amortized Cost 25.0 [4],[5] 25.1 [1],[7]
Fair Value $ 25.0 [4],[5] $ 24.6 [1],[7]
Investment, Identifier [Axis]: Movati Athletic (Group) Inc., First lien senior secured loan    
Coupon 11.39% [2] 10.18% [3]
Coupon, PIK 0.50% [2] 0.50% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 4.8 [4],[5],[6] $ 4.7 [1],[7],[8]
Amortized Cost 4.9 [4],[5],[6] 4.9 [1],[7],[8]
Fair Value $ 4.8 [4],[5],[6] $ 4.6 [1],[7],[8]
Investment, Identifier [Axis]: Mr. Greens Intermediate, LLC, Florida Veg Investments LLC, MRG Texas, LLC and Restaurant Produce and Services Blocker, LLC, Class B limited liability company interest    
Shares (as a percent) 17.71%  
Amortized Cost [5] $ 9.6  
Fair Value [5] $ 9.6  
Investment, Identifier [Axis]: Mr. Greens Intermediate, LLC, Florida Veg Investments LLC, MRG Texas, LLC and Restaurant Produce and Services Blocker, LLC, First lien senior secured loan    
Coupon [2] 11.51%  
Spread [2] 6.25%  
Principal [4],[5] $ 9.8  
Amortized Cost [4],[5] 9.8  
Fair Value [4],[5] 9.5  
Investment, Identifier [Axis]: Mr. Greens Intermediate, LLC, Florida Veg Investments LLC, MRG Texas, LLC and Restaurant Produce and Services Blocker, LLC, First lien senior secured revolving loan    
Principal [16] 0.0  
Amortized Cost [16] 0.0  
Fair Value [16] $ 0.0  
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC, First lien senior secured loan    
Coupon 13.90% [2] 13.08% [3]
Spread 8.50% [2] 8.50% [3]
Principal $ 93.8 [4],[5] $ 75.5 [1],[7]
Amortized Cost 93.8 [4],[5] 75.5 [1],[7]
Fair Value $ 93.8 [4],[5] $ 75.5 [1],[7]
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC, Preferred units    
Coupon [2] 8.00%  
Coupon, PIK [3]   8.00%
Shares/Units 41,000 41,000
Amortized Cost $ 41.0 $ 41.0
Fair Value $ 45.1 $ 45.9
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 1    
Coupon 11.89% [2] 11.23% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 6.2 [4],[5] $ 6.3 [1],[7]
Amortized Cost 6.2 [4],[5] 6.3 [1],[7]
Fair Value $ 6.2 [4],[5] $ 6.3 [1],[7]
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 2    
Coupon 11.89% [2] 11.23% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 2.3 [4],[5] $ 2.3 [1],[7]
Amortized Cost 2.3 [4],[5] 2.3 [1],[7]
Fair Value $ 2.3 [4],[5] $ 2.3 [1],[7]
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 3    
Coupon 11.89% [2] 11.23% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 1.3 [4],[5] $ 1.3 [1],[7]
Amortized Cost 1.3 [4],[5] 1.3 [1],[7]
Fair Value $ 1.3 [4],[5] $ 1.3 [1],[7]
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured revolving loan    
Coupon 11.89% [2] 11.23% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 0.6 [4],[5] $ 0.6 [1],[7]
Amortized Cost 0.6 [4],[5] 0.6 [1],[7]
Fair Value $ 0.6 [4],[5] $ 0.6 [1],[7]
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, Class A-2 common units    
Shares/Units 12,296,000 12,296,000
Amortized Cost $ 12.9 [5] $ 12.9 [1]
Fair Value $ 25.5 [5] $ 18.5 [1]
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, First lien senior secured loan 1    
Coupon 11.20% [2] 10.38% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 0.2 [4],[5] $ 97.0 [1],[7]
Amortized Cost 0.2 [4],[5] 97.0 [1],[7]
Fair Value $ 0.1 [4],[5] $ 95.1 [1],[7]
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, First lien senior secured loan 2    
Coupon 11.20% [2] 10.38% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 96.5 [4],[5] $ 0.2 [1],[7]
Amortized Cost 96.5 [4],[5] 0.2 [1],[7]
Fair Value $ 94.6 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, First lien senior secured loan 3    
Coupon [2] 11.71%  
Spread [2] 6.50%  
Principal [4],[5] $ 8.3  
Amortized Cost [4],[5] 8.3  
Fair Value [4],[5] $ 8.1  
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured loan 1    
Coupon 10.27% [2] 9.38% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 31.8 [4],[5] $ 32.0 [1],[7]
Amortized Cost 31.8 [4],[5] 32.0 [1],[7]
Fair Value $ 29.9 [4],[5] $ 30.7 [1],[7]
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured loan 2    
Coupon 10.27% [2] 9.38% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 4.7 [4],[5] $ 4.7 [1],[7]
Amortized Cost 4.7 [4],[5] 4.7 [1],[7]
Fair Value $ 4.4 [4],[5] $ 4.5 [1],[7]
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured revolving loan    
Coupon [2] 10.20%  
Spread [2] 5.00%  
Principal [4],[5] $ 1.1  
Amortized Cost [4],[5] 1.1  
Fair Value [4],[5] $ 1.0  
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, First lien senior secured revolving loan    
Coupon [3]   8.13%
Spread [3]   3.75%
Principal [1],[14]   $ 2.3
Amortized Cost [1],[14]   2.3
Fair Value [1],[14]   $ 2.1
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, First lien senior secured revolving loan 1    
Coupon [2] 8.97%  
Spread [2] 3.75%  
Principal [5],[13] $ 6.8  
Amortized Cost [5],[13] 6.8  
Fair Value [5],[13] $ 6.4  
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, First lien senior secured revolving loan 2    
Coupon [2] 11.00%  
Spread [2] 2.75%  
Principal [5] $ 0.5  
Amortized Cost [5] 0.5  
Fair Value [5] $ 0.5  
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, Partnership units    
Shares/Units 30,000 30,000
Amortized Cost $ 3.0 [5] $ 3.0 [1]
Fair Value $ 2.7 [5] $ 2.0 [1]
Investment, Identifier [Axis]: NSPC Intermediate Corp. and NSPC Holdings, LLC, Common units    
Shares/Units 1,182  
Amortized Cost [5] $ 0.0  
Fair Value [5] $ 0.0  
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Class A units    
Shares/Units 25,277 25,277
Amortized Cost $ 2.5 [5] $ 2.5 [1]
Fair Value $ 3.5 [5] $ 3.6 [1]
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Preferred units    
Coupon, PIK 15.00% [2] 15.00% [3]
Shares/Units 1,842 1,842
Amortized Cost $ 0.2 [5] $ 0.2 [1]
Fair Value $ 0.2 [5] $ 0.2 [1]
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Senior preferred units    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 5,320 5,320
Amortized Cost $ 0.3 [5] $ 0.3 [1]
Fair Value $ 0.3 [5] $ 0.3 [1]
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Common stock 1    
Shares/Units   4
Amortized Cost   $ 0.0
Fair Value   $ 0.0
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Common stock 2    
Shares/Units   16
Amortized Cost   $ 0.0
Fair Value   $ 0.0
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Senior preferred series A-1 shares    
Shares/Units   151,056
Amortized Cost [1]   $ 98.1
Fair Value [1]   $ 46.5
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Series B preferred stock 1    
Shares/Units   348,615
Amortized Cost   $ 1.0
Fair Value   $ 0.0
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Series B preferred stock 2    
Shares/Units   757,505
Amortized Cost   $ 4.0
Fair Value   $ 0.0
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Series C preferred stock 1    
Shares/Units   517,942
Amortized Cost   $ 0.1
Fair Value   $ 0.0
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Series C preferred stock 2    
Shares/Units   1,994,644
Amortized Cost   $ 0.5
Fair Value   $ 0.0
Investment, Identifier [Axis]: National Intergovernmental Purchasing Alliance Company, First lien senior secured revolving loan    
Coupon [3]   7.12%
Spread [3]   3.00%
Principal [1]   $ 1.2
Amortized Cost [1]   1.2
Fair Value [1]   1.2
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC    
Fair Value   $ 0.0
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., Class A units    
Shares/Units 6,762,668 6,762,668
Amortized Cost $ 6.8 [5],[6] $ 6.8 [1],[8]
Fair Value $ 8.9 [5],[6] $ 7.5 [1],[8]
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., First lien senior secured loan 1    
Coupon 9.45% [2] 8.66% [3]
Spread 4.25% [2] 4.25% [3]
Principal $ 14.8 [4],[5],[6] $ 14.9 [1],[7],[8]
Amortized Cost 14.8 [4],[5],[6] 14.9 [1],[7],[8]
Fair Value $ 14.8 [4],[5],[6] $ 14.6 [1],[7],[8]
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., First lien senior secured loan 2    
Coupon 7.74% [2] 6.11% [3]
Spread 4.50% [2] 4.50% [3]
Principal $ 4.9 [5],[6] $ 4.8 [1],[8]
Amortized Cost 5.0 [5],[6] 5.1 [1],[8]
Fair Value $ 4.9 [5],[6] $ 4.7 [1],[8]
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., First lien senior secured loan 3    
Coupon 7.74% [2] 6.11% [3]
Spread 4.50% [2] 4.50% [3]
Principal $ 1.5 [5],[6] $ 1.5 [1],[8]
Amortized Cost 1.6 [5],[6] 1.6 [1],[8]
Fair Value $ 1.5 [5],[6] $ 1.5 [1],[8]
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., First lien senior secured revolving loan    
Coupon 9.45% [2] 8.66% [3]
Spread 4.25% [2] 4.25% [3]
Principal $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Amortized Cost 0.1 [4],[5],[6] 0.1 [1],[7],[8]
Fair Value $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured loan 1    
Coupon 10.00% [2] 8.82% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 99.3 [4],[5],[11] $ 99.3 [1],[7]
Amortized Cost 91.1 [4],[5],[11] 90.4 [1],[7]
Fair Value $ 87.2 [4],[5],[11] $ 88.4 [1],[7]
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured loan 2    
Coupon 8.06% [2] 8.57% [3]
Spread 5.00% [2] 4.75% [3]
Principal $ 16.5 [5],[11] $ 74.0 [1],[7]
Amortized Cost 13.6 [5],[11] 68.5 [1],[7]
Fair Value $ 15.1 [5],[11] $ 65.9 [1],[7]
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured loan 3    
Coupon 9.75% [2] 6.25% [3]
Spread 4.75% [2] 5.00% [3]
Principal $ 81.9 [4],[5] $ 16.2 [1]
Amortized Cost 75.8 [4],[5] 13.5 [1]
Fair Value $ 70.5 [4],[5] $ 14.4 [1]
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured note    
Coupon [2] 9.29%  
Principal [5],[11] $ 52.8  
Amortized Cost [5],[11] 51.5  
Fair Value [5],[11] $ 48.5  
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured notes    
Coupon [3]   929.00%
Principal [1],[12]   $ 52.8
Amortized Cost [1],[12]   51.4
Fair Value [1],[12]   $ 49.8
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., Limited partnership interests    
Shares/Units 4,040,000 4,040,000
Amortized Cost $ 4.1 [5] $ 4.0 [1]
Fair Value $ 4.6 [5] $ 4.0 [1]
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., Second lien senior secured loan    
Coupon 14.75% [2] 13.57% [3]
Spread 9.75% [2] 9.75% [3]
Principal $ 221.3 [4],[5] $ 221.3 [1],[7]
Amortized Cost 221.3 [4],[5] 221.3 [1],[7]
Fair Value $ 201.4 [4],[5] $ 214.7 [1],[7]
Investment, Identifier [Axis]: Nest Topco Borrower Inc., KKR Nest Co-Invest L.P., and NBLY 2021-1, Limited partner interest    
Shares/Units 9,725,000 9,725,000
Amortized Cost $ 9.7 [5] $ 9.7 [1]
Fair Value $ 9.2 [5] $ 10.2 [1]
Investment, Identifier [Axis]: Nest Topco Borrower Inc., KKR Nest Co-Invest L.P., and NBLY 2021-1, Senior subordinated loan    
Coupon 14.00% [2] 13.26% [3]
Spread 8.50% [2] 8.50% [3]
Principal $ 119.1 [4],[5] $ 119.1 [1],[7]
Amortized Cost 119.1 [4],[5] 119.1 [1],[7]
Fair Value $ 116.8 [4],[5] $ 117.9 [1],[7]
Investment, Identifier [Axis]: New Era Cap, LLC, First lien senior secured loan    
Coupon 11.19% [2] 9.94% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 27.0 [4],[5] $ 27.8 [1],[7]
Amortized Cost 27.0 [4],[5] 27.8 [1],[7]
Fair Value 27.0 [4],[5] 27.8 [1],[7]
Investment, Identifier [Axis]: Noble Aerospace, LLC, First lien senior secured revolving loan    
Principal 0.0 [16] 0.0 [15]
Amortized Cost 0.0 [16] 0.0 [15]
Fair Value $ 0.0 [16] $ 0.0 [15]
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, Common units    
Shares/Units 884,916 884,916
Amortized Cost $ 0.9 [5] $ 0.9 [1]
Fair Value $ 2.9 [5] $ 2.9 [1]
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan 1    
Coupon 11.14% [2] 10.23% [3]
Spread 5.75% [2] 5.50% [3]
Principal $ 19.9 [4],[5] $ 20.0 [1],[7]
Amortized Cost 19.9 [4],[5] 20.0 [1],[7]
Fair Value $ 19.7 [4],[5] $ 20.0 [1],[7]
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan 2    
Coupon 11.14% [2] 10.08% [3]
Spread 5.75% [2] 5.50% [3]
Principal $ 2.8 [4],[5] $ 2.9 [1],[7]
Amortized Cost 2.8 [4],[5] 2.9 [1],[7]
Fair Value $ 2.8 [4],[5] $ 2.9 [1],[7]
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan 3    
Coupon [2] 11.06%  
Spread [2] 5.75%  
Principal [4],[5] $ 4.0  
Amortized Cost [4],[5] 4.0  
Fair Value [4],[5] $ 4.0  
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured revolving loan    
Coupon [2] 10.63%  
Spread [2] 5.50%  
Principal [4],[5] $ 0.5  
Amortized Cost [4],[5] 0.5  
Fair Value [4],[5] $ 0.5  
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., Class A preferred units    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 13,528 13,528
Amortized Cost $ 16.9 [5] $ 16.2 [1]
Fair Value $ 37.3 [5] $ 38.8 [1]
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 1    
Coupon 10.90% [2] 10.18% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 47.3 [4],[5] $ 47.5 [1],[7]
Amortized Cost 47.3 [4],[5] 47.5 [1],[7]
Fair Value $ 47.3 [4],[5] $ 47.5 [1],[7]
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 2    
Coupon 10.90% [2] 10.18% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5] $ 2.6 [1],[7]
Amortized Cost 0.1 [4],[5] 2.6 [1],[7]
Fair Value $ 0.1 [4],[5] $ 2.6 [1],[7]
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 3    
Coupon 10.90% [2] 10.18% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 2.5 [4],[5] $ 0.1 [1],[7]
Amortized Cost 2.5 [4],[5] 0.1 [1],[7]
Fair Value $ 2.5 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 4    
Coupon 10.90% [2] 10.18% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., Senior subordinated loan    
Coupon, PIK [2] 11.00%  
Principal [5] $ 1.4  
Amortized Cost [5] 1.4  
Fair Value [5] $ 1.4  
Investment, Identifier [Axis]: North Haven Fairway Buyer, LLC, Fairway Lawns, LLC and Command Pest Control, LLC, First lien senior secured loan    
Coupon [3]   11.05%
Spread [3]   6.50%
Principal [1],[7]   $ 6.4
Amortized Cost [1],[7]   6.3
Fair Value [1],[7]   $ 6.2
Investment, Identifier [Axis]: North Haven Fairway Buyer, LLC, Fairway Lawns, LLC and Command Pest Control, LLC, First lien senior secured loan 1    
Coupon [2] 11.74%  
Spread [2] 6.50%  
Principal [4],[5] $ 7.6  
Amortized Cost [4],[5] 7.6  
Fair Value [4],[5] $ 7.6  
Investment, Identifier [Axis]: North Haven Fairway Buyer, LLC, Fairway Lawns, LLC and Command Pest Control, LLC, First lien senior secured loan 2    
Coupon [2] 11.62%  
Spread [2] 6.50%  
Principal [4],[5] $ 5.4  
Amortized Cost [4],[5] 5.4  
Fair Value [4],[5] $ 5.4  
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, Class A units    
Shares/Units 50,000 50,000
Amortized Cost $ 5.0 $ 5.0
Fair Value $ 0.4 $ 1.8
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, First lien senior secured loan    
Coupon [3]   11.19%
Spread [3]   6.50%
Principal [1],[7]   $ 25.3
Amortized Cost [1],[7]   25.3
Fair Value [1],[7]   $ 23.5
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, First lien senior secured loan 1    
Coupon [2] 13.19%  
Coupon, PIK [2] 3.75%  
Spread [2] 8.00%  
Principal [4],[5] $ 25.4  
Amortized Cost [4],[5] 25.4  
Fair Value [4],[5] $ 22.3  
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, First lien senior secured loan 2    
Coupon [2] 13.39%  
Coupon, PIK [2] 3.75%  
Spread [2] 8.00%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured loan    
Coupon 10.70% [2] 9.90% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 7.7 [4],[5] $ 6.9 [1],[7]
Amortized Cost 7.7 [4],[5] 6.8 [1],[7]
Fair Value $ 7.5 [4],[5] $ 6.7 [1],[7]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured revolving loan    
Coupon 10.70% [2] 9.92% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.7 [4],[5] $ 0.8 [1],[7]
Amortized Cost 0.7 [4],[5] 0.8 [1],[7]
Fair Value $ 0.7 [4],[5] $ 0.8 [1],[7]
Investment, Identifier [Axis]: Northwinds Holding, Inc. and Northwinds Services Group LLC, Common units    
Shares/Units 1,845,385  
Amortized Cost [5] $ 2.4  
Fair Value [5] $ 2.5  
Investment, Identifier [Axis]: Northwinds Holding, Inc. and Northwinds Services Group LLC, First lien senior secured loan 1    
Coupon [2] 11.77%  
Spread [2] 6.50%  
Principal [4],[5] $ 16.4  
Amortized Cost [4],[5] 16.4  
Fair Value [4],[5] $ 15.9  
Investment, Identifier [Axis]: Northwinds Holding, Inc. and Northwinds Services Group LLC, First lien senior secured loan 2    
Coupon [2] 11.80%  
Spread [2] 6.50%  
Principal [4],[5] $ 2.8  
Amortized Cost [4],[5] 2.8  
Fair Value [4],[5] $ 2.7  
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., Class A preferred units    
Coupon, PIK 10.00% [2] 10.00% [3]
Shares/Units 4,772 4,772
Amortized Cost $ 4.2 [5] $ 4.2 [1]
Fair Value $ 7.6 [5] $ 9.2 [1]
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., Class C units    
Shares/Units 4,772 4,772
Amortized Cost $ 0.0 [5] $ 0.0
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., First lien senior secured loan 1    
Coupon 11.95% [2] 11.17% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 22.8 [4],[5] $ 23.5 [1],[7]
Amortized Cost 22.8 [4],[5] 23.5 [1],[7]
Fair Value $ 22.8 [4],[5] $ 23.5 [1],[7]
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., First lien senior secured loan 2    
Coupon 11.95% [2] 11.17% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 0.3 [4],[5] $ 6.3 [1],[7]
Amortized Cost 0.3 [4],[5] 6.3 [1],[7]
Fair Value $ 0.3 [4],[5] $ 6.3 [1],[7]
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 1    
Coupon 10.03% [2] 10.02% [3]
Spread 5.25% [2] 5.25% [3]
Principal $ 25.7 [4],[5] $ 25.9 [1],[7]
Amortized Cost 25.7 [4],[5] 25.9 [1],[7]
Fair Value $ 25.7 [4],[5] $ 25.9 [1],[7]
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 2    
Coupon 10.03% [2] 10.02% [3]
Spread 5.25% [2] 5.25% [3]
Principal $ 15.2 [4],[5] $ 15.2 [1],[7]
Amortized Cost 15.2 [4],[5] 15.2 [1],[7]
Fair Value $ 15.2 [4],[5] $ 15.2 [1],[7]
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 3    
Coupon 10.03% [2] 10.02% [3]
Spread 5.25% [2] 5.25% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: OTG Management, LLC, Class A preferred units    
Shares/Units 3,000,000 3,000,000
Amortized Cost $ 25.3 [5] $ 25.3 [1]
Fair Value $ 12.5 [5] $ 13.1 [1]
Investment, Identifier [Axis]: OTG Management, LLC, Common units    
Shares/Units 3,000,000 3,000,000
Amortized Cost $ 3.0 [5] $ 3.0
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: OTG Management, LLC, Warrant to purchase common units    
Shares (as a percent) 7.73%  
Amortized Cost [5] $ 0.1  
Fair Value [5] $ 0.0  
Investment, Identifier [Axis]: OTG Management, LLC, Warrant to purchase of common units    
Shares (as a percent)   773.00%
Amortized Cost   $ 0.1
Fair Value   $ 0.0
Investment, Identifier [Axis]: OUTFRONT Media Inc., Series A convertible perpetual preferred stock    
Coupon 7.00% [2] 700.00% [3]
Shares/Units 25,000 25,000
Amortized Cost $ 25.0 [5],[6] $ 25.0 [1],[8]
Fair Value $ 31.5 [5],[6] $ 33.6 [1],[8]
Investment, Identifier [Axis]: Offen, Inc., First lien senior secured loan    
Coupon 10.46% [2] 8.51% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 0.1 [5] $ 1.4 [1]
Amortized Cost 0.1 [5] 1.5 [1]
Fair Value 0.1 [5] 1.4 [1]
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC    
Fair Value $ 38.2 $ 44.7
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Class A common units    
Shares/Units 9,549,000 9,549,000
Amortized Cost $ 9.5 [5] $ 9.5
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Common units    
Shares/Units 7,584 7,584
Amortized Cost $ 0.0 [5] $ 0.0
Fair Value 0.0 [5] 0.0
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan 1    
Principal 53.3 [5],[9] 50.9 [10]
Amortized Cost 49.3 [5],[9] 49.3 [10]
Fair Value 32.0 [5],[9] 38.1 [10]
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan 2    
Principal 7.2 [5],[9] 8.7 [1],[10]
Amortized Cost 6.7 [5],[9] 8.5 [1],[10]
Fair Value 4.3 [5],[9] $ 6.6 [1],[10]
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan 3    
Principal [5],[9] 3.2  
Amortized Cost [5],[9] 3.0  
Fair Value [5],[9] $ 1.9  
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Preferred stock    
Shares/Units 7,983 7,983
Amortized Cost $ 3.1 [5] $ 3.1
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Preferred units    
Shares/Units 417,189 417,189
Amortized Cost $ 0.3 [5] $ 0.3
Fair Value $ 0.0 [5] 0.0
Investment, Identifier [Axis]: OneDigital Borrower LLC, First lien senior secured revolving loan    
Coupon [2] 11.00%  
Spread [2] 2.75%  
Principal $ 2.4 [13] 0.0 [15]
Amortized Cost 2.4 [5],[13] 0.0 [15]
Fair Value $ 2.3 [5],[13] $ 0.0 [15]
Investment, Identifier [Axis]: Opal Fuels LLC and Opal Fuels Inc., Class A common stock    
Shares/Units 3,059,533 3,059,533
Amortized Cost $ 23.3 [6],[11] $ 23.3 [8],[12]
Fair Value $ 22.8 [6],[11] $ 22.3 [8],[12]
Investment, Identifier [Axis]: Opal Fuels LLC and Opal Fuels Inc., Senior subordinated loan    
Coupon, PIK 8.00% [2] 8.00% [3]
Principal $ 29.7 [6] $ 28.5 [8]
Amortized Cost 26.3 [6] 24.8 [8]
Fair Value $ 29.7 [6] $ 28.5 [8]
Investment, Identifier [Axis]: OpenMarket Inc., First lien senior secured loan    
Coupon 11.79% [2] 10.98%
Spread 6.25% [2] 6.25%
Principal $ 14.9 [4],[5],[6] $ 51.6 [1],[7],[8]
Amortized Cost 14.9 [4],[5],[6] 51.6 [1],[7],[8]
Fair Value $ 14.9 [4],[5],[6] $ 51.1 [1],[7],[8]
Investment, Identifier [Axis]: Osmose Utilities Services, Inc. and Pine Intermediate Holding LLC, Second lien senior secured loan    
Coupon 11.97% [2] 11.13% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 55.3 [4],[5] $ 55.3 [1],[7]
Amortized Cost 55.3 [4],[5] 55.3 [1],[7]
Fair Value 53.0 [4],[5] 51.4 [1],[7]
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment II, L.P.    
Fair Value $ 16.9 $ 15.5
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment II, L.P., Limited partnership interest    
Shares (as a percent) 100.00% 100.00%
Amortized Cost $ 7.2 [5],[6] $ 7.1 [1],[8]
Fair Value 16.9 [5],[6] 15.5 [1],[8]
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment, L.P.    
Fair Value $ 0.6 $ 0.7
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment, L.P., Limited partnership interest    
Shares (as a percent) 100.00% 100.00%
Amortized Cost $ 4.3 [6] $ 4.3 [8]
Fair Value $ 0.6 [6] $ 0.7 [8]
Investment, Identifier [Axis]: PDDS HoldCo, Inc., First lien senior secured loan    
Coupon [3]   12.30%
Spread [3]   7.50%
Principal [1],[7]   $ 9.4
Amortized Cost [1],[7]   9.4
Fair Value [1],[7]   $ 9.2
Investment, Identifier [Axis]: PDDS HoldCo, Inc., First lien senior secured loan 1    
Coupon [2] 13.09%  
Spread [2] 7.50%  
Principal [4],[5] $ 10.1  
Amortized Cost [4],[5] 10.1  
Fair Value [4],[5] $ 10.1  
Investment, Identifier [Axis]: PDDS HoldCo, Inc., First lien senior secured loan 2    
Coupon [2] 12.62%  
Spread [2] 7.50%  
Principal [4],[5] $ 0.9  
Amortized Cost [4],[5] 0.9  
Fair Value [4],[5] $ 0.9  
Investment, Identifier [Axis]: PDDS HoldCo, Inc., First lien senior secured loan 3    
Coupon [2] 13.09%  
Spread [2] 7.50%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.7  
Fair Value [4],[5] $ 0.7  
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Class A units    
Shares/Units 2,062,493 2,062,493
Amortized Cost $ 2.1 [5] $ 2.1 [1]
Fair Value $ 3.0 [5] $ 2.7 [1]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, First lien senior secured loan    
Coupon 9.75% [2] 8.73% [3]
Spread 4.50% [2] 4.50% [3]
Principal $ 52.6 [4],[5] $ 52.9 [1],[7]
Amortized Cost 52.6 [4],[5] 52.9 [1],[7]
Fair Value $ 52.1 [4],[5] $ 51.9 [1],[7]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, First lien senior secured revolving loan    
Coupon 9.75% [2] 8.82% [3]
Spread 4.50% [2] 4.50% [3]
Principal $ 3.8 [4],[5] $ 6.1 [1],[7]
Amortized Cost 3.8 [4],[5] 6.1 [1],[7]
Fair Value $ 3.8 [4],[5] $ 6.0 [1],[7]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 1    
Coupon 13.88% [2] 13.18% [3]
Spread 8.50% [2] 8.50% [3]
Principal $ 70.1 [4],[5] $ 70.1 [1],[7]
Amortized Cost 70.1 [4],[5] 70.1 [1],[7]
Fair Value $ 69.4 [4],[5] $ 68.7 [1],[7]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 2    
Coupon 13.88% [2] 13.18% [3]
Spread 8.50% [2] 8.50% [3]
Principal $ 8.3 [4],[5] $ 8.7 [1],[7]
Amortized Cost 8.3 [4],[5] 8.7 [1],[7]
Fair Value $ 8.2 [4],[5] $ 8.6 [1],[7]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 3    
Coupon 13.88% [2] 13.18% [3]
Spread 8.50% [2] 8.50% [3]
Principal $ 8.7 [4],[5] $ 8.3 [1],[7]
Amortized Cost 8.7 [4],[5] 8.3 [1],[7]
Fair Value $ 8.7 [4],[5] $ 8.1 [1],[7]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 4    
Coupon 13.88% [2] 13.18% [3]
Spread 8.50% [2] 8.50% [3]
Principal $ 7.2 [4],[5] $ 7.2 [1],[7]
Amortized Cost 7.2 [4],[5] 7.2 [1],[7]
Fair Value $ 7.1 [4],[5] $ 7.1 [1],[7]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Series A preferred stock    
Coupon, PIK 13.25% [2] 13.25% [3]
Shares/Units 13,656 13,656
Amortized Cost $ 23.8 [5] $ 22.3 [1]
Fair Value 22.6 [5] 21.2 [1]
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC    
Fair Value $ 26.1 $ 27.7
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC, Common unit    
Shares/Units 279,200 279,199
Amortized Cost $ 7.4 [5] $ 7.4 [1]
Fair Value $ 6.9 [5] $ 8.3 [1]
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC, First lien senior secured loan    
Coupon 11.50% [2] 10.73% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 14.9 [4],[5] $ 14.9 [1],[7]
Amortized Cost 14.9 [4],[5] 14.9 [1],[7]
Fair Value $ 14.9 [4],[5] $ 14.9 [1],[7]
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC, First lien senior secured revolving loan    
Coupon 11.50% [2] 10.73% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 4.3 [4],[5] $ 4.5 [1],[7]
Amortized Cost 4.3 [4],[5] 4.5 [1],[7]
Fair Value $ 4.3 [4],[5] $ 4.5 [1],[7]
Investment, Identifier [Axis]: Partnership Capital Growth Investors III, L.P., Limited partnership interest    
Shares (as a percent) 2.50% 2.50%
Amortized Cost $ 1.8 [5],[6],[11] $ 1.8 [1],[8],[12]
Fair Value $ 4.1 [5],[6],[11] $ 3.9 [1],[8],[12]
Investment, Identifier [Axis]: Pathstone Family Office LLC, First lien senior secured loan    
Coupon [2] 12.00%  
Spread [2] 6.75%  
Principal [4],[5],[6] $ 3.9  
Amortized Cost [4],[5],[6] 3.9  
Fair Value [4],[5],[6] $ 3.9  
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC, Class R common units    
Shares/Units 6,004,768 6,004,768
Amortized Cost $ 6.0 [5] $ 6.0 [1]
Fair Value $ 3.3 [5] $ 5.5 [1]
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC, Second lien senior secured loan    
Coupon 12.97% [2] 12.13% [3]
Spread 7.75% [2] 7.75% [3]
Principal $ 76.3 [4],[5] $ 76.3 [1],[7]
Amortized Cost 76.3 [4],[5] 76.3 [1],[7]
Fair Value $ 64.9 [4],[5] $ 65.6 [1],[7]
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan    
Coupon [3]   8.87%
Spread [3]   5.50%
Principal [1],[7]   $ 16.0
Amortized Cost [1],[7]   15.8
Fair Value [1],[7]   $ 15.5
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan 1    
Coupon [2] 10.99%  
Spread [2] 5.75%  
Principal [4],[5] $ 14.3  
Amortized Cost [4],[5] 14.2  
Fair Value [4],[5] $ 13.8  
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan 2    
Coupon [2] 11.14%  
Spread [2] 5.75%  
Principal [4],[5] $ 1.6  
Amortized Cost [4],[5] 1.5  
Fair Value [4],[5] $ 1.5  
Investment, Identifier [Axis]: PayNearMe, Inc., Warrant to purchase shares of Series E preferred stock    
Shares/Units   195,726
Amortized Cost   $ 0.2
Fair Value   $ 0.0
Investment, Identifier [Axis]: Paya, Inc and GTCR-Ultra Holdings LLC, Class B units    
Shares/Units   2,878,372
Amortized Cost [1]   $ 0.0
Fair Value [1]   $ 2.6
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, Class A units    
Shares/Units 5,000 5,000
Amortized Cost $ 5.0 $ 5.0
Fair Value $ 12.6 $ 14.3
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan 1    
Coupon 10.57% [2] 10.48% [3]
Spread 5.25% [2] 5.75% [3]
Principal $ 0.2 [4],[5] $ 13.7 [1],[7]
Amortized Cost 0.2 [4],[5] 13.7 [1],[7]
Fair Value $ 0.2 [4],[5] $ 13.7 [1],[7]
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan 2    
Coupon 11.25% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan 3    
Coupon 11.05% [2] 9.98% [3]
Spread 5.75% [2] 5.25% [3]
Principal $ 0.3 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.3 [4],[5] 0.2 [1],[7]
Fair Value $ 0.3 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured revolving loan    
Coupon [2] 10.64%  
Spread [2] 5.25%  
Principal [4],[5] $ 7.7  
Amortized Cost [4],[5] 7.7  
Fair Value [4],[5] $ 7.6  
Investment, Identifier [Axis]: Pelican Products, Inc., Second lien senior secured loan    
Coupon 12.91% [2] 12.20% [3]
Spread 7.75% [2] 7.75% [3]
Principal $ 60.0 [4],[5] $ 60.0 [1],[7]
Amortized Cost 60.0 [4],[5] 60.0 [1],[7]
Fair Value $ 55.2 [4],[5] $ 55.8 [1],[7]
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 1    
Coupon 11.28% [2] 10.91% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 39.6 [4],[5],[6] $ 40.9 [1],[7],[8]
Amortized Cost 41.7 [4],[5],[6] 43.7 [1],[7],[8]
Fair Value $ 39.6 [4],[5],[6] $ 40.5 [1],[7],[8]
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 2    
Coupon 10.54% [2] 10.91% [3]
Spread 5.50% [2] 6.25% [3]
Principal $ 12.1 [4],[5],[6] $ 12.8 [1],[7],[8]
Amortized Cost 12.2 [4],[5],[6] 14.0 [1],[7],[8]
Fair Value $ 12.0 [4],[5],[6] $ 12.6 [1],[7],[8]
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 3    
Coupon 10.81% [2] 10.17% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 2.5 [4],[5],[6] $ 8.1 [1],[7],[8]
Amortized Cost 2.5 [4],[5],[6] 8.4 [1],[7],[8]
Fair Value $ 2.4 [4],[5],[6] $ 7.8 [1],[7],[8]
Investment, Identifier [Axis]: People Corporation, First lien senior secured revolving loan    
Coupon 11.27% [2] 10.99% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 2.0 [4],[5],[6] $ 1.3 [1],[7],[8]
Amortized Cost 2.0 [4],[5],[6] 1.3 [1],[7],[8]
Fair Value $ 2.0 [4],[5],[6] $ 1.3 [1],[7],[8]
Investment, Identifier [Axis]: Perforce Software, Inc., First lien senior secured revolving loan    
Coupon [2] 11.75%  
Spread [2] 3.50%  
Principal [5],[13] $ 1.0  
Amortized Cost [5],[13] 1.0  
Fair Value [5],[13] $ 1.0  
Investment, Identifier [Axis]: PerkinElmer U.S. LLC and NM Polaris Co-Invest, L.P., First lien senior secured loan    
Coupon [2] 11.99%  
Spread [2] 6.75%  
Principal [4],[5] $ 17.5  
Amortized Cost [4],[5] 17.5  
Fair Value [4],[5] $ 17.0  
Investment, Identifier [Axis]: PerkinElmer U.S. LLC and NM Polaris Co-Invest, L.P., Limited partnership interests    
Shares (as a percent) 0.62%  
Amortized Cost [5] $ 9.9  
Fair Value [5] $ 9.9  
Investment, Identifier [Axis]: PestCo Holdings, LLC and PestCo, LLC, Class A units    
Shares/Units 134  
Amortized Cost $ 1.7  
Fair Value $ 1.8  
Investment, Identifier [Axis]: PestCo Holdings, LLC and PestCo, LLC, First lien senior secured loan    
Coupon [2] 11.87%  
Spread [2] 6.75%  
Principal [4],[5] $ 1.7  
Amortized Cost [4],[5] 1.7  
Fair Value [4],[5] $ 1.6  
Investment, Identifier [Axis]: PetVet Care Centers, LLC, First lien senior secured loan    
Coupon 10.10% [2] 9.38% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 5.3 [4],[5] $ 5.3 [1],[7]
Amortized Cost 5.2 [4],[5] 5.1 [1],[7]
Fair Value $ 5.2 [4],[5] $ 5.0 [1],[7]
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 1    
Coupon 11.27% [2] 10.42% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 33.7 [4],[5] $ 34.5 [1],[7]
Amortized Cost 33.7 [4],[5] 34.5 [1],[7]
Fair Value $ 33.7 [4],[5] $ 34.5 [1],[7]
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 2    
Coupon 11.24% [2] 10.72% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 0.7 [4],[5] $ 11.6 [1],[7]
Amortized Cost 0.7 [4],[5] 11.6 [1],[7]
Fair Value $ 0.7 [4],[5] $ 11.6 [1],[7]
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 3    
Coupon [2] 11.52%  
Spread [2] 6.00%  
Principal [4],[5] $ 11.2  
Amortized Cost [4],[5] 11.2  
Fair Value [4],[5] $ 11.2  
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 4    
Coupon [2] 11.23%  
Spread [2] 6.00%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 5    
Coupon [2] 11.34%  
Spread [2] 6.00%  
Principal [4],[5] $ 2.4  
Amortized Cost [4],[5] 2.4  
Fair Value [4],[5] $ 2.4  
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured revolving loan    
Coupon 11.54% [2] 9.71% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 0.2 [4],[5],[13] $ 2.5 [1],[7],[14]
Amortized Cost 0.2 [4],[5],[13] 2.5 [1],[7],[14]
Fair Value $ 0.2 [4],[5],[13] $ 2.5 [1],[7],[14]
Investment, Identifier [Axis]: Petrus Buyer, Inc., First lien senior secured loan    
Coupon 11.52% [2] 10.70% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 5.0 [4],[5] $ 5.1 [1],[7]
Amortized Cost 5.0 [4],[5] 5.1 [1],[7]
Fair Value $ 5.0 [4],[5] $ 4.9 [1],[7]
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured loan    
Coupon [3]   10.21%
Spread [3]   5.50%
Principal [1],[7]   $ 21.5
Amortized Cost [1],[7]   21.5
Fair Value [1],[7]   $ 21.5
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured loan 1    
Coupon [2] 10.70%  
Spread [2] 5.50%  
Principal [4],[5] $ 5.9  
Amortized Cost [4],[5] 5.9  
Fair Value [4],[5] $ 5.9  
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured loan 2    
Coupon [2] 10.19%  
Spread [2] 5.50%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured revolving loan    
Coupon [2] 12.75%  
Spread [2] 4.50%  
Principal [4],[5] $ 0.9  
Amortized Cost [4],[5] 0.9  
Fair Value [4],[5] $ 0.9  
Investment, Identifier [Axis]: Ping Identity Holding Corp., First lien senior secured loan    
Coupon 12.08% [2] 11.32% [3]
Spread 7.00% [2] 7.00% [3]
Principal $ 11.3 [4],[5] $ 11.3 [1],[7]
Amortized Cost 11.3 [4],[5] 11.3 [1],[7]
Fair Value $ 11.3 [4],[5] $ 11.0 [1],[7]
Investment, Identifier [Axis]: Piper Jaffray Merchant Banking Fund I, L.P., Limited partnership interest    
Shares (as a percent) 2.00% 2.00%
Amortized Cost $ 0.1 [6],[11] $ 0.1 [8],[12]
Fair Value $ 0.5 [6],[11] $ 0.5 [8],[12]
Investment, Identifier [Axis]: Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC, Co-Invest units    
Shares/Units 5,969 5,969
Amortized Cost $ 0.6 [5] $ 0.6 [1]
Fair Value $ 0.3 [5] $ 0.5 [1]
Investment, Identifier [Axis]: Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC, First lien senior secured loan    
Coupon 9.27% [2] 8.41% [3]
Spread 4.00% [2] 4.00% [3]
Principal $ 22.5 [4],[5],[11] $ 22.6 [1],[7]
Amortized Cost 21.5 [4],[5],[11] 21.5 [1],[7]
Fair Value $ 19.4 [4],[5],[11] $ 20.1 [1],[7]
Investment, Identifier [Axis]: Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC, Second lien senior secured loan    
Coupon 12.56% [2] 11.98% [3]
Spread 7.25% [2] 7.25% [3]
Principal $ 55.0 [4],[5] $ 55.0 [1],[7]
Amortized Cost 55.0 [4],[5] 55.0 [1],[7]
Fair Value $ 47.3 [4],[5] $ 48.9 [1],[7]
Investment, Identifier [Axis]: Pluralsight, Inc., First lien senior secured loan    
Coupon 13.04% [2] 11.83% [3]
Spread 8.00% [2] 8.00% [3]
Principal $ 106.2 [4],[5] $ 106.2 [1],[7]
Amortized Cost 106.2 [4],[5] 106.2 [1],[7]
Fair Value $ 103.0 [4],[5] $ 104.0 [1],[7]
Investment, Identifier [Axis]: Pluralsight, Inc., First lien senior secured revolving loan    
Coupon 13.04% [2] 12.36% [3]
Spread 8.00% [2] 8.00% [3]
Principal $ 0.2 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.2 [4],[5] 0.2 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Polymer Solutions Group, LLC, First lien senior secured loan    
Coupon [3]   8.92%
Spread [3]   4.75%
Principal [1],[7]   $ 0.0
Amortized Cost [1],[7]   0.0
Fair Value [1],[7]   $ 0.0
Investment, Identifier [Axis]: Poplicus Incorporated, Warrant to purchase shares of Series C preferred stock    
Shares/Units 2,402,991 2,402,991
Amortized Cost $ 0.1 $ 0.1
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: PosiGen, Inc., Warrant to purchase shares of common stock    
Shares/Units 1,112,022 1,112,022
Amortized Cost $ 0.0 [5] $ 0.0
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: PosiGen, Inc., Warrant to purchase shares of series D-1 preferred stock    
Shares/Units 101,555 101,555
Amortized Cost $ 0.0 [5] $ 0.0
Fair Value 0.0 [5] 0.0
Investment, Identifier [Axis]: Potomac Intermediate Holdings II LLC    
Fair Value $ 126.6 $ 143.2
Investment, Identifier [Axis]: Potomac Intermediate Holdings II LLC, Series A units    
Shares/Units 226,884,442 226,884,442
Amortized Cost $ 185.7 $ 185.7
Fair Value $ 126.6 $ 143.2
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., Class A units    
Shares/Units 88,420 88,420
Amortized Cost $ 13.4 [5] $ 13.4 [1]
Fair Value $ 26.0 [5] $ 26.5 [1]
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan 1    
Coupon 11.20% [2] 10.42% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 11.6 [4],[5],[6] $ 11.7 [1],[7],[8]
Amortized Cost 11.6 [4],[5],[6] 11.7 [1],[7],[8]
Fair Value $ 11.4 [4],[5],[6] $ 11.4 [1],[7],[8]
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan 2    
Coupon 11.20% [2] 10.42% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 4.0 [4],[5],[6] $ 4.0 [1],[7],[8]
Amortized Cost 4.0 [4],[5],[6] 4.0 [1],[7],[8]
Fair Value $ 3.9 [4],[5],[6] $ 3.9 [1],[7],[8]
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan 1    
Coupon 10.84% [2] 10.18% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 14.6 [4],[5],[6] $ 14.7 [1],[7],[8]
Amortized Cost 14.6 [4],[5],[6] 14.7 [1],[7],[8]
Fair Value $ 14.6 [4],[5],[6] $ 14.7 [1],[7],[8]
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan 2    
Coupon 10.84% [2] 10.43% [3]
Spread 5.50% [2] 5.75% [3]
Principal $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Amortized Cost 0.1 [4],[5],[6] 0.1 [1],[7],[8]
Fair Value $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan 3    
Coupon 11.09% [2] 10.18% [3]
Spread 5.75% [2] 5.50% [3]
Principal $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Amortized Cost 0.1 [4],[5],[6] 0.1 [1],[7],[8]
Fair Value $ 0.1 [4],[5],[6] $ 0.1 [1],[7],[8]
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured revolving loan    
Coupon 10.84% [2] 10.18% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 8.2 [4],[5],[6] $ 6.2 [1],[7],[8]
Amortized Cost 8.2 [4],[5],[6] 6.2 [1],[7],[8]
Fair Value $ 8.2 [4],[5],[6] $ 6.2 [1],[7],[8]
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P., First lien senior secured loan    
Coupon 11.20% [2] 10.38% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 27.1 [4],[5] $ 27.3 [1],[7]
Amortized Cost 27.1 [4],[5] 27.3 [1],[7]
Fair Value $ 23.6 [4],[5] $ 25.6 [1],[7]
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P., First lien senior secured revolving loan    
Coupon 11.20% [2] 10.38% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 3.5 [4],[5] $ 2.3 [1],[7]
Amortized Cost 3.5 [4],[5] 2.3 [1],[7]
Fair Value $ 3.0 [4],[5] $ 2.2 [1],[7]
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P., Limited partner interests    
Shares (as a percent) 4.58% 4.58%
Amortized Cost $ 5.0 [5] $ 4.7 [1]
Fair Value $ 2.1 [5] $ 2.8 [1]
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, Class A units    
Shares/Units 9,775 9,775
Amortized Cost $ 9.8 [5] $ 9.8 [1]
Fair Value $ 11.1 [5] $ 12.8 [1]
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, First lien senior secured loan    
Coupon 9.34% [2] 7.92% [3]
Spread 3.75% [2] 3.75% [3]
Principal $ 8.5 [4],[5] $ 8.6 [1],[7]
Amortized Cost 8.5 [4],[5] 8.5 [1],[7]
Fair Value 8.1 [4],[5] 8.1 [1],[7]
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, First lien senior secured revolving loan    
Principal 0.0 [16] 0.0 [15]
Amortized Cost 0.0 [16] 0.0 [15]
Fair Value $ 0.0 [16] $ 0.0 [15]
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, Second lien senior secured loan    
Coupon 13.09% [2] 11.67% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 67.1 [5] $ 67.1 [1]
Amortized Cost 66.8 [5] 66.8 [1]
Fair Value $ 63.1 [5] $ 64.4 [1]
Investment, Identifier [Axis]: Prime Buyer, L.L.C., First lien senior secured revolving loan    
Coupon 10.45% [2] 9.88% [3]
Spread 5.25% [2] 5.25% [3]
Principal $ 0.7 [4],[5] $ 2.7 [1],[7]
Amortized Cost 0.2 [4],[5] 2.0 [1],[7]
Fair Value $ 0.6 [4],[5] 2.6 [1],[7]
Investment, Identifier [Axis]: Primrose Holding Corporation    
Fair Value   $ 0.0
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., First lien senior secured loan    
Coupon 11.23% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.7 [4],[5],[6] $ 0.7 [1],[7],[8]
Amortized Cost 0.7 [4],[5],[6] 0.7 [1],[7],[8]
Fair Value $ 0.7 [4],[5],[6] $ 0.7 [1],[7],[8]
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., Senior preferred stock    
Coupon 17.55% [2] 16.73% [3]
Coupon, PIK 7.00% [2] 7.00% [3]
Spread 12.00% [2] 12.00% [3]
Shares/Units 65,761 65,761
Amortized Cost $ 71.8 [4],[5],[6] $ 69.2 [1],[8]
Fair Value $ 75.8 [4],[5],[6] $ 73.2 [1],[8]
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., Warrant to purchase shares of common stock    
Shares/Units 527,226 527,226
Amortized Cost $ 4.0 [5],[6],[11] $ 4.0 [1],[8],[12]
Fair Value $ 1.9 [5],[6],[11] $ 2.8 [1],[8],[12]
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, Class A units    
Shares/Units 7,900,000 7,900,000
Amortized Cost $ 7.9 [5] $ 7.9 [1]
Fair Value $ 6.5 [5] $ 8.4 [1]
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan    
Coupon [3]   10.47%
Spread [3]   5.50%
Principal [1],[7]   $ 65.0
Amortized Cost [1],[7]   65.0
Fair Value [1],[7]   63.1
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan 1    
Coupon [2] 11.09%  
Spread [2] 5.50%  
Principal [4],[5] $ 57.5  
Amortized Cost [4],[5] 57.5  
Fair Value [4],[5] $ 55.8  
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan 2    
Coupon [2] 10.70%  
Spread [2] 5.50%  
Principal [4],[5] $ 7.2  
Amortized Cost [4],[5] 7.2  
Fair Value [4],[5] $ 6.9  
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan 3    
Coupon [2] 11.05%  
Spread [2] 5.50%  
Principal [4],[5] $ 3.3  
Amortized Cost [4],[5] 3.3  
Fair Value [4],[5] 3.2  
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC    
Fair Value $ 111.0 $ 97.3
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, Class A units    
Shares/Units 113,617 113,617
Amortized Cost $ 4.9 [5] $ 4.9 [1]
Fair Value $ 46.3 [5] $ 34.3 [1]
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 1    
Coupon 13.69% [2] 12.85% [3]
Coupon, PIK 5.50% [2] 9.85% [3]
Spread 8.50% [2] 8.50% [3]
Principal $ 41.1 [4],[5] $ 39.1 [1],[7]
Amortized Cost 41.1 [4],[5] 39.1 [1],[7]
Fair Value $ 41.1 [4],[5] $ 39.1 [1],[7]
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 2    
Coupon 10.19% [2] 11.85% [3]
Coupon, PIK 2.50% [2] 2.59% [3]
Spread 5.00% [2] 7.50% [3]
Principal $ 15.3 [4],[5] $ 15.4 [1],[7]
Amortized Cost 15.2 [4],[5] 15.4 [1],[7]
Fair Value $ 15.3 [4],[5] $ 15.4 [1],[7]
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 3    
Coupon 12.70% [2] 11.88% [3]
Coupon, PIK 2.50% [2] 2.57% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 0.9 [4],[5] $ 7.6 [1],[7]
Amortized Cost 0.9 [4],[5] 7.6 [1],[7]
Fair Value $ 0.9 [4],[5] $ 7.6 [1],[7]
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 4    
Coupon 12.70% [2] 11.88% [3]
Coupon, PIK 2.50% [2] 2.57% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 7.5 [4],[5] $ 0.9 [1],[7]
Amortized Cost 7.5 [4],[5] 0.9 [1],[7]
Fair Value $ 7.5 [4],[5] $ 0.9 [1],[7]
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., First lien senior secured loan    
Coupon, PIK 12.00% [2] 12.00% [3]
Principal $ 18.2 [5] $ 17.1 [1]
Amortized Cost 17.3 [5] 16.1 [1]
Fair Value $ 18.2 [5] $ 17.1 [1]
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Second lien senior secured loan    
Coupon [3]   14.00%
Coupon, PIK [2] 14.00%  
Principal $ 0.2 [5] $ 0.1 [1]
Amortized Cost 0.1 [5] 0.0 [1]
Fair Value $ 0.2 [5] $ 0.1 [1]
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Series E preferred stock    
Shares/Units 219,035 219,035
Amortized Cost $ 0.7 [5] $ 0.7 [1]
Fair Value $ 0.7 [5] $ 0.6 [1]
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Warrant to purchase shares of common stock 1    
Shares/Units 3,223,122 3,223,122
Amortized Cost $ 1.7 [5] $ 1.7 [1]
Fair Value $ 1.4 [5] $ 0.8 [1]
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Warrant to purchase shares of common stock 2    
Shares/Units 68,787 57,322
Amortized Cost $ 0.2 [5] $ 0.2 [1]
Fair Value $ 0.2 [5] $ 0.2 [1]
Investment, Identifier [Axis]: ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P., First lien senior secured loan    
Coupon 10.70% [2] 10.23% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 9.9 [4],[5] $ 5.5 [1],[7]
Amortized Cost 9.9 [4],[5] 5.5 [1],[7]
Fair Value $ 9.7 [4],[5] $ 5.4 [1],[7]
Investment, Identifier [Axis]: ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P., Limited partnership units    
Shares/Units 1,624,000 1,624,000
Amortized Cost $ 1.6 [5] $ 1.6 [1]
Fair Value $ 1.6 [5] $ 1.5 [1]
Investment, Identifier [Axis]: Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc., Class A common stock    
Shares/Units 7,445 7,445
Amortized Cost $ 7.4 [5] $ 7.4 [1]
Fair Value $ 15.3 [5] $ 14.4 [1]
Investment, Identifier [Axis]: Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc., Class B common stock    
Shares/Units 1,841,609 1,841,609
Amortized Cost $ 0.1 [5] $ 0.1 [1]
Fair Value $ 0.2 [5] $ 0.1 [1]
Investment, Identifier [Axis]: Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc., First lien senior secured loan    
Coupon 9.20% [2] 8.39% [3]
Spread 4.00% [2] 4.00% [3]
Principal $ 2.8 [5],[11] $ 2.8 [1],[12]
Amortized Cost 2.8 [5],[11] 2.8 [1],[12]
Fair Value $ 2.8 [5],[11] $ 2.8 [1],[12]
Investment, Identifier [Axis]: Project Essential Bidco, Inc. and Project Essential Super Parent, Inc., First lien senior secured loan    
Coupon 11.43% [2] 9.99% [3]
Spread 6.25% [2] 5.75% [3]
Principal $ 36.1 [4],[5] $ 36.2 [1],[7]
Amortized Cost 36.1 [4],[5] 36.2 [1],[7]
Fair Value $ 35.0 [4],[5] $ 34.7 [1],[7]
Investment, Identifier [Axis]: Project Essential Bidco, Inc. and Project Essential Super Parent, Inc., Preferred shares    
Coupon, PIK 14.77% [2] 14.23% [3]
Spread 9.50% [2] 9.50% [3]
Shares/Units 26,436 26,436
Amortized Cost $ 34.3 [5] $ 31.9 [1]
Fair Value $ 32.6 [5] $ 30.2 [1]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., Class B units    
Shares/Units 588,636 588,636
Amortized Cost $ 0.0 [5] $ 0.0 [1]
Fair Value $ 5.1 [5] $ 9.3 [1]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 1    
Coupon 12.35% [2] 12.07% [3]
Spread 7.25% [2] 7.75% [3]
Principal $ 43.4 [4],[5] $ 43.6 [1],[7]
Amortized Cost 43.4 [4],[5] 43.6 [1],[7]
Fair Value $ 43.4 [4],[5] $ 43.6 [1],[7]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 2    
Coupon 12.35% [2] 12.07% [3]
Spread 7.25% [2] 7.75% [3]
Principal $ 0.1 [4],[5] $ 14.3 [1],[7]
Amortized Cost 0.1 [4],[5] 14.3 [1],[7]
Fair Value $ 0.1 [4],[5] $ 14.3 [1],[7]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 3    
Coupon 12.35% [2] 12.07% [3]
Spread 7.25% [2] 7.75% [3]
Principal $ 11.9 [4],[5] $ 12.8 [1],[7]
Amortized Cost 11.9 [4],[5] 12.8 [1],[7]
Fair Value $ 11.9 [4],[5] $ 12.8 [1],[7]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 4    
Coupon [3]   12.07%
Spread [3]   7.75%
Principal [1],[7]   $ 4.9
Amortized Cost [1],[7]   4.9
Fair Value [1],[7]   $ 4.9
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured revolving loan    
Coupon 12.35% [2] 12.07% [3]
Spread 7.25% [2] 7.75% [3]
Principal $ 2.1 [4],[5] $ 2.1 [1],[7],[14]
Amortized Cost 2.0 [4],[5] 2.0 [1],[7],[14]
Fair Value $ 2.1 [4],[5] $ 2.1 [1],[7],[14]
Investment, Identifier [Axis]: Project Ruby Ultimate Parent Corp., Second lien senior secured loan    
Coupon 11.72% [2] 10.88% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 193.1 [4],[5] $ 193.1 [1],[7]
Amortized Cost 193.1 [4],[5] 193.1 [1],[7]
Fair Value $ 183.4 [4],[5] $ 181.5 [1],[7]
Investment, Identifier [Axis]: Proofpoint, Inc., First lien senior secured loan    
Coupon 8.47% [2] 7.98% [3]
Spread 3.25% [2] 3.25% [3]
Principal $ 1.0 [4],[5],[11] $ 1.0 [1],[7],[12]
Amortized Cost 0.9 [4],[5],[11] 0.9 [1],[7],[12]
Fair Value $ 1.0 [4],[5],[11] $ 0.9 [1],[7],[12]
Investment, Identifier [Axis]: Proofpoint, Inc., Second lien senior secured loan    
Coupon 11.47% [2] 10.98% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 34.6 [4],[5] $ 34.6 [1],[7]
Amortized Cost 34.5 [4],[5] 34.4 [1],[7]
Fair Value $ 34.6 [4],[5] $ 34.6 [1],[7]
Investment, Identifier [Axis]: Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings LLC, Class A units    
Shares/Units   1,001
Amortized Cost [1]   $ 9.7
Fair Value [1]   $ 11.0
Investment, Identifier [Axis]: Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured loan    
Coupon [3]   10.47%
Spread [3]   6.00%
Principal [1],[7]   $ 1.4
Amortized Cost [1],[7]   1.4
Fair Value [1],[7]   $ 1.4
Investment, Identifier [Axis]: PushPay USA Inc., First lien senior secured loan    
Coupon [2] 11.97%  
Spread [2] 6.75%  
Principal [4],[5] $ 12.7  
Amortized Cost [4],[5] 12.7  
Fair Value [4],[5] $ 12.4  
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured loan 1    
Coupon [3]   11.63%
Coupon, PIK [3]   1.25%
Spread [3]   7.25%
Principal [1],[7]   $ 16.9
Amortized Cost [1],[7]   16.9
Fair Value [1],[7]   $ 16.9
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured loan 2    
Coupon [3]   11.63%
Coupon, PIK [3]   1.25%
Spread [3]   7.25%
Principal [1],[7]   $ 0.1
Amortized Cost [1],[7]   0.1
Fair Value [1],[7]   $ 0.1
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured revolving loan    
Coupon [3]   11.60%
Coupon, PIK [3]   1.25%
Spread [3]   7.25%
Principal [1],[7],[14]   $ 9.7
Amortized Cost [1],[7],[14]   9.7
Fair Value [1],[7],[14]   $ 9.7
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, Preferred membership units    
Shares/Units   996,833
Amortized Cost   $ 1.0
Fair Value   $ 0.9
Investment, Identifier [Axis]: Pyramid-BMC IntermediateCo I, LLC and Pyramid Investors, LLC, First lien senior secured loan    
Coupon [2] 13.08%  
Spread [2] 8.00%  
Principal [4],[5] $ 7.7  
Amortized Cost [4],[5] 7.7  
Fair Value [4],[5] $ 7.7  
Investment, Identifier [Axis]: Pyramid-BMC IntermediateCo I, LLC and Pyramid Investors, LLC, Preferred membership units    
Shares/Units 996,833  
Amortized Cost $ 1.0  
Fair Value $ 1.0  
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 1    
Coupon 11.45% [2] 11.02% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 6.8 [4],[5] $ 8.1 [1],[7]
Amortized Cost 6.8 [4],[5] 8.1 [1],[7]
Fair Value $ 6.8 [4],[5] $ 8.1 [1],[7]
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 2    
Coupon 11.46% [2] 10.43% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 4.9 [4],[5] $ 6.8 [1],[7]
Amortized Cost 4.9 [4],[5] 6.8 [1],[7]
Fair Value $ 4.9 [4],[5] $ 6.8 [1],[7]
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 3    
Coupon 11.45% [2] 10.64% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 8.1 [4],[5] $ 3.7 [1],[7]
Amortized Cost 8.1 [4],[5] 3.7 [1],[7]
Fair Value $ 8.1 [4],[5] $ 3.7 [1],[7]
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured revolving loan    
Coupon [2] 11.47%  
Spread [2] 6.25%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP, First lien senior secured loan    
Coupon [3]   11.11%
Spread [3]   7.00%
Principal [1],[7]   $ 10.6
Amortized Cost [1],[7]   10.6
Fair Value [1],[7]   $ 10.3
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP, First lien senior secured loan 1    
Coupon [2] 12.08%  
Spread [2] 7.00%  
Principal [4],[5] $ 10.6  
Amortized Cost [4],[5] 10.6  
Fair Value [4],[5] $ 10.6  
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP, First lien senior secured loan 2    
Coupon [2] 12.13%  
Spread [2] 7.00%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP, Limited partnership interests    
Shares/Units 992,500 992,500
Amortized Cost $ 9.9 [5] $ 9.9 [1]
Fair Value $ 11.5 [5] $ 9.9 [1]
Investment, Identifier [Axis]: R2 Acquisition Corp., Common stock    
Shares/Units 250,000 250,000
Amortized Cost $ 0.2 [5] $ 0.2 [1]
Fair Value $ 0.2 [5] $ 0.1 [1]
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured loan    
Coupon 10.22% [2] 9.32% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 11.4 [4],[5] $ 11.5 [1],[7]
Amortized Cost 11.4 [4],[5] 11.5 [1],[7]
Fair Value $ 11.4 [4],[5] $ 11.2 [1],[7]
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan    
Coupon [3]   9.28%
Spread [3]   5.00%
Principal [1],[7]   $ 1.8
Amortized Cost [1],[7]   1.8
Fair Value [1],[7]   $ 1.7
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan 1    
Coupon [2] 10.38%  
Spread [2] 5.00%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.7  
Fair Value [4],[5] $ 0.7  
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan 2    
Coupon [2] 10.23%  
Spread [2] 5.00%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan 3    
Coupon [2] 10.14%  
Spread [2] 5.00%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.7  
Fair Value [4],[5] $ 0.7  
Investment, Identifier [Axis]: RC V Tecmo Investor LLC, Common member units    
Shares/Units 9,624,000 9,624,000
Amortized Cost $ 8.3 [5] $ 8.3 [1]
Fair Value 23.0 [5] 22.9 [1]
Investment, Identifier [Axis]: RD Holdco Inc.    
Fair Value $ 12.2 $ 10.3
Investment, Identifier [Axis]: RD Holdco Inc., Common stock    
Shares/Units 458,596 458,596
Amortized Cost $ 14.0 $ 14.0
Fair Value 0.0 0.0
Investment, Identifier [Axis]: RD Holdco Inc., Second lien senior secured loan    
Principal [1],[10]   24.2
Amortized Cost [1],[10]   22.0
Fair Value [1],[10]   $ 10.2
Investment, Identifier [Axis]: RD Holdco Inc., Second lien senior secured loan 1    
Principal [5],[9] 26.0  
Amortized Cost [5],[9] 23.3  
Fair Value [5],[9] $ 11.7  
Investment, Identifier [Axis]: RD Holdco Inc., Second lien senior secured loan 2    
Coupon, PIK [2] 14.99%  
Spread [2] 9.75%  
Principal [4],[5] $ 1.0  
Amortized Cost [4],[5] 1.0  
Fair Value [4],[5] $ 0.5  
Investment, Identifier [Axis]: RD Holdco Inc., Warrant to purchase shares of common stock    
Shares/Units 56,372 56,372
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: RE Community Holdings GP, LLC and RE Community Holdings, LP, Limited partnership interest 1    
Shares (as a percent) 2.86% 2.86%
Amortized Cost $ 0.0 [5] $ 0.0
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: RE Community Holdings GP, LLC and RE Community Holdings, LP, Limited partnership interest 2    
Shares (as a percent) 2.49% 2.49%
Amortized Cost $ 0.0 [5] $ 0.0
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: RF HP SCF Investor, LLC, Membership interest    
Shares (as a percent) 10.08% 10.08%
Amortized Cost $ 12.5 [5],[6] $ 12.5 [1],[8]
Fair Value $ 27.5 [5],[6] $ 25.9 [1],[8]
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., Class A common stock    
Shares/Units 465 464.90
Amortized Cost $ 4.6 [5] $ 4.6 [1]
Fair Value $ 5.2 [5] $ 5.5 [1]
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., First lien senior secured loan 1    
Coupon 11.49% [2] 10.98% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 0.1 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.1 [4],[5] 0.2 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., First lien senior secured loan 2    
Coupon 11.64% [2] 10.48% [3]
Spread 6.25% [2] 5.75% [3]
Principal $ 0.2 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.2 [4],[5] 0.1 [1],[7]
Fair Value $ 0.2 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan    
Coupon [3]   9.79%
Spread [3]   5.50%
Principal [1],[7]   $ 32.8
Amortized Cost [1],[7]   32.8
Fair Value [1],[7]   $ 31.8
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan 1    
Coupon [2] 10.91%  
Spread [2] 5.50%  
Principal [4],[5] $ 1.1  
Amortized Cost [4],[5] 1.1  
Fair Value [4],[5] $ 1.1  
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan 2    
Coupon [2] 10.70%  
Spread [2] 5.50%  
Principal [4],[5] $ 29.2  
Amortized Cost [4],[5] 29.2  
Fair Value [4],[5] $ 28.3  
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan 3    
Coupon [2] 10.89%  
Spread [2] 5.50%  
Principal [4],[5] $ 2.3  
Amortized Cost [4],[5] 2.3  
Fair Value [4],[5] $ 2.2  
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc., First lien senior secured loan    
Coupon 11.86% [2] 10.02% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 22.4 [4],[5] $ 22.5 [1],[7]
Amortized Cost 22.4 [4],[5] 22.5 [1],[7]
Fair Value $ 22.4 [4],[5] $ 22.3 [1],[7]
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc., First lien senior secured revolving loan    
Coupon 11.93% [2] 11.09% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 7.3 [4],[5] $ 9.8 [1],[7]
Amortized Cost 7.3 [4],[5] 9.8 [1],[7]
Fair Value $ 7.3 [4],[5] $ 9.7 [1],[7]
Investment, Identifier [Axis]: Radiant Intermediate Holding, LLC, First lien senior secured loan    
Coupon [2] 11.11%  
Spread [2] 5.75%  
Principal [4],[5] $ 2.1  
Amortized Cost [4],[5] 2.0  
Fair Value [4],[5] $ 2.0  
Investment, Identifier [Axis]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited, First lien senior secured revolving loan 1    
Coupon 11.00% [2] 8.68% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.2 [4],[5],[6] $ 0.4 [1],[7],[8]
Amortized Cost 0.2 [4],[5],[6] 0.4 [1],[7],[8]
Fair Value $ 0.2 [4],[5],[6] $ 0.4 [1],[7],[8]
Investment, Identifier [Axis]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited, First lien senior secured revolving loan 2    
Coupon 10.68% [2] 10.08% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.3 [4],[5],[6] $ 0.4 [1],[7],[8]
Amortized Cost 0.3 [4],[5],[6] 0.4 [1],[7],[8]
Fair Value $ 0.3 [4],[5],[6] $ 0.4 [1],[7],[8]
Investment, Identifier [Axis]: Radwell Parent, LLC, First lien senior secured loan    
Coupon 11.99% [2] 11.33% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 0.1 [4],[5] $ 19.5 [1],[7]
Amortized Cost 0.1 [4],[5] 18.9 [1],[7]
Fair Value $ 0.1 [4],[5] $ 18.9 [1],[7]
Investment, Identifier [Axis]: Radwell Parent, LLC, First lien senior secured revolving loan    
Coupon [2] 11.99%  
Spread [2] 6.75%  
Principal [4],[5] $ 0.9  
Amortized Cost [4],[5] 0.8  
Fair Value [4],[5] $ 0.9  
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, Class A common units    
Shares/Units 2,880,582 2,880,582
Amortized Cost $ 3.5 $ 3.5
Fair Value $ 6.1 $ 5.9
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, First lien senior secured loan    
Coupon [3]   10.23%
Spread [3]   5.50%
Principal [1],[7],[8]   $ 8.5
Amortized Cost [1],[7],[8]   8.5
Fair Value [1],[7],[8]   $ 8.2
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, First lien senior secured loan 1    
Coupon [2] 11.37%  
Spread [2] 6.13%  
Principal [4],[5] $ 8.5  
Amortized Cost [4],[5] 8.5  
Fair Value [4],[5] $ 8.5  
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, First lien senior secured loan 2    
Coupon [2] 11.37%  
Spread [2] 6.13%  
Principal [4],[5] $ 11.8  
Amortized Cost [4],[5] 11.8  
Fair Value [4],[5] $ 11.8  
Investment, Identifier [Axis]: Rawlings Sporting Goods Company, Inc. and Easton Diamond Sports, LLC, First lien senior secured loan 1    
Coupon 11.64% [2] 11.48% [3]
Spread 6.25% [2] 6.75% [3]
Principal $ 49.5 [4],[5] $ 49.7 [1],[7]
Amortized Cost 49.5 [4],[5] 49.7 [1],[7]
Fair Value $ 49.5 [4],[5] $ 49.7 [1],[7]
Investment, Identifier [Axis]: Rawlings Sporting Goods Company, Inc. and Easton Diamond Sports, LLC, First lien senior secured loan 2    
Coupon 11.41% [2] 11.48% [3]
Spread 6.25% [2] 6.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: RealPage, Inc., Second lien senior secured loan    
Coupon 11.65% [2] 10.88% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 84.1 [4],[5] $ 84.1 [1],[7]
Amortized Cost 83.2 [4],[5] 83.1 [1],[7]
Fair Value $ 82.4 [4],[5] $ 82.4 [1],[7]
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 1    
Coupon 11.72% [2] 10.24% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 60.9 [4],[5] $ 61.3 [1],[7]
Amortized Cost 60.9 [4],[5] 61.3 [1],[7]
Fair Value $ 60.3 [4],[5] $ 60.0 [1],[7]
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 2    
Coupon 11.22% [2] 10.24% [3]
Spread 6.00% [2] 6.50% [3]
Principal $ 4.2 [4],[5] $ 4.2 [1],[7]
Amortized Cost 4.2 [4],[5] 4.2 [1],[7]
Fair Value $ 4.2 [4],[5] $ 4.2 [1],[7]
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 3    
Coupon 11.22% [2] 10.24% [3]
Spread 6.00% [2] 6.50% [3]
Principal $ 0.9 [4],[5] $ 0.9 [1],[7]
Amortized Cost 0.9 [4],[5] 0.9 [1],[7]
Fair Value $ 0.9 [4],[5] $ 0.9 [1],[7]
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured revolving loan    
Coupon [2] 13.25%  
Spread [2] 5.00%  
Principal [4],[5] $ 1.3  
Amortized Cost [4],[5] 1.2  
Fair Value [4],[5] $ 1.2  
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan 1    
Coupon 11.70% [2] 11.17% [3]
Spread 6.50% [2] 6.75% [3]
Principal $ 0.2 [4],[5] $ 0.8 [1],[7]
Amortized Cost 0.2 [4],[5] 0.8 [1],[7]
Fair Value $ 0.2 [4],[5] $ 0.8 [1],[7]
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan 2    
Coupon 11.70% [2] 11.17% [3]
Spread 6.50% [2] 6.75% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan 3    
Coupon 11.70% [2] 11.17% [3]
Spread 6.50% [2] 6.75% [3]
Principal $ 1.4 [4],[5] $ 0.2 [1],[7]
Amortized Cost 1.4 [4],[5] 0.2 [1],[7]
Fair Value $ 1.4 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, Series D units    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 19,592,999 19,592,999
Amortized Cost $ 20.8 $ 20.5
Fair Value $ 42.0 $ 33.9
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan 1    
Coupon 15.26% [2] 12.74% [3]
Coupon, PIK [3]   2.00%
Spread 10.00% [2] 8.00% [3]
Principal $ 23.0 [4],[5] $ 23.7 [1],[7]
Amortized Cost 23.0 [4],[5] 23.7 [1],[7]
Fair Value $ 20.7 [4],[5] $ 22.9 [1],[7]
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan 2    
Coupon 15.26% [2] 10.15% [3]
Coupon, PIK 4.25% [2] 2.00% [3]
Spread 10.00% [2] 5.75% [3]
Principal $ 1.8 [4],[5] $ 1.3 [1],[7]
Amortized Cost 1.8 [4],[5] 1.3 [1],[7]
Fair Value $ 1.6 [4],[5] $ 1.3 [1],[7]
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 1    
Coupon 15.23% [2] 14.50% [3]
Coupon, PIK 2.00% [2] 2.00% [3]
Spread 10.00% [2] 10.00% [3]
Principal $ 26.7 [4],[5],[13] $ 35.5 [1],[7],[14]
Amortized Cost 26.7 [4],[5],[13] 35.5 [1],[7],[14]
Fair Value $ 24.0 [4],[5],[13] $ 34.4 [1],[7],[14]
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 2    
Coupon 10.83% [2] 14.32% [3]
Coupon, PIK 2.00% [2] 4.96% [3]
Spread 5.75% [2] 10.00% [3]
Principal $ 2.2 [4],[5],[13] $ 1.0 [1],[7],[14]
Amortized Cost 2.2 [4],[5],[13] 0.9 [1],[7],[14]
Fair Value $ 2.0 [4],[5],[13] $ 1.0 [1],[7],[14]
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 3    
Coupon [2] 2.00%  
Coupon, PIK [2] 10.99%  
Spread [2] 5.75%  
Principal [4],[5],[13] $ 16.3  
Amortized Cost [4],[5],[13] 16.3  
Fair Value [4],[5],[13] $ 14.7  
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 4    
Coupon [2] 15.26%  
Coupon, PIK [2] 4.25%  
Spread [2] 10.00%  
Principal [4],[5],[13] $ 2.0  
Amortized Cost [4],[5],[13] 1.9  
Fair Value [4],[5],[13] $ 1.8  
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase shares of common stock    
Shares/Units 5,394,181  
Amortized Cost $ 0.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase shares of common stock 1    
Shares/Units   5,393,194
Amortized Cost   $ 0.0
Fair Value   $ 0.0
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase shares of common stock 2    
Shares/Units   987
Amortized Cost   $ 0.0
Fair Value   $ 0.0
Investment, Identifier [Axis]: Registrar Intermediate, LLC and PSP Registrar Co-Investment Fund, L.P., First lien senior secured loan    
Coupon 10.55% [2] 9.38% [3]
Spread 5.00% [2] 5.00% [3]
Principal $ 2.7 [4],[5] $ 2.7 [1],[7]
Amortized Cost 2.7 [4],[5] 2.7 [1],[7]
Fair Value $ 2.7 [4],[5] $ 2.7 [1],[7]
Investment, Identifier [Axis]: Registrar Intermediate, LLC and PSP Registrar Co-Investment Fund, L.P., Limited partner interests    
Shares (as a percent) 1.13% 1.13%
Amortized Cost $ 2.7 [5] $ 2.7 [1]
Fair Value $ 2.6 [5] $ 2.6 [1]
Investment, Identifier [Axis]: Relativity ODA LLC, First lien senior secured loan    
Coupon, PIK 11.70% [2] 11.89% [3]
Spread 6.50% [2] 7.50% [3]
Principal $ 23.0 [4],[5] $ 22.5 [1],[7]
Amortized Cost 23.0 [4],[5] 22.5 [1],[7]
Fair Value $ 23.0 [4],[5] $ 22.5 [1],[7]
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC, Class A common units    
Shares/Units 163,820 163,820
Amortized Cost $ 5.0 [5] $ 4.9 [1]
Fair Value $ 4.3 [5] $ 4.4 [1]
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC, First lien senior secured revolving loan 1    
Coupon [2] 10.28%  
Spread [2] 5.00%  
Principal [4],[5] $ 1.2  
Amortized Cost [4],[5] 1.2  
Fair Value [4],[5] $ 1.2  
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC, First lien senior secured revolving loan 2    
Coupon [2] 10.19%  
Spread [2] 5.00%  
Principal [4],[5] $ 2.4  
Amortized Cost [4],[5] 2.4  
Fair Value [4],[5] $ 2.3  
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured loan    
Coupon [2] 10.95%  
Spread [2] 5.75%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.7  
Fair Value [4],[5] $ 0.7  
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured loan 1    
Coupon [3]   10.48%
Spread [3]   5.75%
Principal [1],[7]   $ 0.7
Amortized Cost [1],[7]   0.7
Fair Value [1],[7]   $ 0.6
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured loan 2    
Coupon [3]   10.46%
Spread [3]   5.75%
Principal [1]   $ 0.1
Amortized Cost [1]   0.1
Fair Value [1]   $ 0.0
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 1    
Coupon 10.70% [2] 9.88%
Spread 5.50% [2] 5.50%
Principal $ 0.3 [4],[5],[6] $ 0.3 [1],[8]
Amortized Cost 0.3 [4],[5],[6] 0.3 [1],[8]
Fair Value $ 0.3 [4],[5],[6] $ 0.3 [1],[8]
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 2    
Coupon 10.70% [2] 9.88% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5],[6] $ 0.1 [1],[8]
Amortized Cost 0.1 [4],[5],[6] 0.1 [1],[8]
Fair Value $ 0.1 [4],[5],[6] $ 0.1 [1],[8]
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 3    
Coupon 10.70% [2] 9.88% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5],[6] $ 0.1 [1],[8]
Amortized Cost 0.1 [4],[5],[6] 0.1 [1],[8]
Fair Value 0.1 [4],[5],[6] 0.1 [1],[8]
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured revolving loan    
Principal 0.0 [16] 0.0 [8],[15]
Amortized Cost 0.0 [16] 0.0 [8],[15]
Fair Value $ 0.0 [16] $ 0.0 [8],[15]
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan    
Coupon [3]   9.33%
Spread [3]   5.75%
Principal [1],[7]   $ 0.7
Amortized Cost [1],[7]   0.8
Fair Value [1],[7]   $ 0.7
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan 1    
Coupon [2] 11.12%  
Spread [2] 5.88%  
Principal [4],[5] $ 1.7  
Amortized Cost [4],[5] 1.7  
Fair Value [4],[5] $ 1.7  
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan 2    
Coupon [2] 10.68%  
Spread [2] 5.75%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.7  
Fair Value [4],[5] $ 0.7  
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan 3    
Coupon [2] 11.58%  
Spread [2] 6.50%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured revolving loan    
Coupon [2] 13.13%  
Spread [2] 4.88%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: Riverview Power LLC, First lien senior secured loan    
Coupon 14.39% [2] 13.73% [3]
Spread 9.00% [2] 9.00% [3]
Principal $ 40.9 [4],[5] $ 57.6 [1],[7]
Amortized Cost 40.4 [4],[5] 56.7 [1],[7]
Fair Value $ 40.9 [4],[5] $ 57.6 [1],[7]
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC, First lien senior secured loan    
Coupon 11.48% [2] 10.38% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 16.8 [4],[5] $ 16.9 [1],[7]
Amortized Cost 16.8 [4],[5] 16.9 [1],[7]
Fair Value $ 16.0 [4],[5] $ 16.1 [1],[7]
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC, First lien senior secured revolving loan    
Coupon 11.44% [2] 10.38% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 1.7 [4],[5] $ 1.3 [1],[7]
Amortized Cost 1.7 [4],[5] 1.3 [1],[7]
Fair Value 1.6 [4],[5] 1.2 [1],[7]
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC)    
Fair Value $ 0.2 $ 0.0
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC), Class B common units    
Shares/Units 126,278,000 126,278,000
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.2 $ 0.0
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC), Common units    
Shares/Units 1,116,879 1,116,879
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC), Warrant to purchase units    
Shares/Units 3,157,895 3,157,895
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: SCI PH Parent, Inc., Series B shares    
Shares/Units 11 11.4764
Amortized Cost $ 1.1 [5] $ 1.1 [1]
Fair Value $ 1.8 [5] $ 4.2 [1]
Investment, Identifier [Axis]: SCIH Salt Holdings Inc., First lien senior secured revolving loan    
Coupon [3]   8.15%
Spread [3]   4.00%
Principal [1],[7],[14]   $ 2.3
Amortized Cost [1],[7],[14]   2.2
Fair Value [1],[7],[14]   $ 2.2
Investment, Identifier [Axis]: SCM Insurance Services Inc., First lien senior secured loan    
Coupon 11.64% [2] 11.16% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 0.1 [4],[5],[6] $ 61.1 [1],[7],[8]
Amortized Cost 0.1 [4],[5],[6] 64.2 [1],[7],[8]
Fair Value $ 0.1 [4],[5],[6] $ 61.1 [1],[7],[8]
Investment, Identifier [Axis]: SE1 Generation, LLC, Senior subordinated loan    
Coupon 14.25% [2] 12.25% [3]
Coupon, PIK 8.55% [2] 5.50% [3]
Principal $ 44.9 [5] $ 57.5 [1]
Amortized Cost 44.5 [5] 57.5 [1]
Fair Value $ 44.9 [5] $ 57.5 [1]
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 1    
Coupon 10.64% [2] 9.48% [3]
Spread 5.25% [2] 4.75% [3]
Principal $ 6.2 [4] $ 10.0 [1],[7]
Amortized Cost 6.2 [4] 10.0 [1],[7]
Fair Value $ 6.0 [4] $ 9.8 [1],[7]
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 2    
Coupon 10.64% [2] 9.48% [3]
Spread 5.25% [2] 4.75% [3]
Principal $ 10.0 [4],[5] $ 6.2 [1],[7]
Amortized Cost 10.0 [4],[5] 6.2 [1],[7]
Fair Value $ 9.7 [4],[5] $ 6.1 [1],[7]
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 3    
Coupon 10.64% [2] 9.48% [3]
Spread 5.25% [2] 4.75% [3]
Principal $ 0.4 [4],[5] $ 0.4 [1],[7]
Amortized Cost 0.4 [4],[5] 0.4 [1],[7]
Fair Value $ 0.4 [4],[5] $ 0.4 [1],[7]
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured revolving loan    
Coupon [3]   9.48%
Spread [3]   4.75%
Principal [1],[7]   $ 8.3
Amortized Cost [1],[7]   8.3
Fair Value [1],[7]   $ 8.1
Investment, Identifier [Axis]: SG Acquisition, Inc., First lien senior secured loan    
Coupon 10.70% [2] 9.17% [3]
Spread 5.50% [2] 5.00% [3]
Principal $ 33.8 [4],[5] $ 33.8 [1],[7]
Amortized Cost 33.8 [4],[5] 33.8 [1],[7]
Fair Value 33.1 [4],[5] 33.5 [1],[7]
Investment, Identifier [Axis]: SHO Holding I Corporation, Second lien senior secured loan    
Principal [1],[10]   124.9
Amortized Cost [1],[10]   120.4
Fair Value [1],[10]   $ 82.4
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc.    
Fair Value $ 78.4  
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc., Common stock    
Shares/Units 481,918  
Amortized Cost [5] $ 0.0  
Fair Value [5] $ 0.0  
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc., First lien senior secured loan    
Coupon, PIK [2] 10.62%  
Spread [2] 5.25%  
Principal [4],[5],[6] $ 18.2  
Amortized Cost [4],[5],[6] 18.2  
Fair Value [4],[5],[6] 16.0  
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc., Second lien senior secured loan    
Principal [5],[9] 124.9  
Amortized Cost [5],[9] 112.5  
Fair Value [5],[9] $ 62.4  
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc., Series A preferred stock    
Shares/Units 9,800  
Amortized Cost [5] $ 0.0  
Fair Value [5] $ 0.0  
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc., Warrant to purchase shares of common stock    
Shares/Units 9,800  
Amortized Cost [5] $ 0.0  
Fair Value [5] $ 0.0  
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, Inc., Series A units    
Shares/Units   8,041
Amortized Cost [1]   $ 8.0
Fair Value [1]   $ 0.1
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, Inc., Series B units    
Shares/Units   804,142
Amortized Cost [1]   $ 0.0
Fair Value [1]   $ 9.3
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, LLC, Series A units    
Shares/Units 8,041  
Amortized Cost [5] $ 8.0  
Fair Value [5] $ 10.5  
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, LLC, Series B units    
Shares/Units 860,643  
Amortized Cost [5] $ 0.0  
Fair Value [5] $ 0.0  
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, LLC, Series D units    
Coupon, PIK [2] 8.00%  
Shares/Units 565  
Amortized Cost [5] $ 0.6  
Fair Value [5] $ 0.7  
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, Class A-2 units    
Shares/Units 4,812 4,812
Amortized Cost $ 4.9 [5] $ 4.9 [1]
Fair Value $ 4.8 [5] $ 4.8 [1]
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, First lien senior secured loan    
Coupon, PIK [2] 13.74%  
Spread [2] 8.50%  
Principal [4],[5] $ 89.6  
Amortized Cost [4],[5] 85.7  
Fair Value [4],[5] $ 86.0  
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, First lien senior secured loan 1    
Coupon, PIK [3]   12.34%
Spread [3]   7.50%
Principal [1],[7]   $ 61.1
Amortized Cost [1],[7]   56.7
Fair Value [1],[7]   $ 56.2
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, First lien senior secured loan 2    
Coupon [3]   12.19%
Spread [3]   7.50%
Principal [1],[7]   $ 22.7
Amortized Cost [1],[7]   22.7
Fair Value [1],[7]   $ 20.9
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, Warrant to purchase Class A-2 units    
Shares/Units   6,118
Amortized Cost [1]   $ 4.7
Fair Value [1]   $ 4.7
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, Warrant to purchase units of common stock    
Shares/Units 6,118  
Amortized Cost [5] $ 4.7  
Fair Value [5] $ 3.6  
Investment, Identifier [Axis]: SSE Buyer, Inc., Supply Source Enterprises, Inc., Impact Products LLC, The Safety Zone, LLC and SSE Parent, LP, Limited partnership class A-1 units    
Shares/Units 2,173 2,173
Amortized Cost $ 1.1 [5] $ 1.1 [1]
Fair Value $ 0.0 [5] $ 0.0 [1]
Investment, Identifier [Axis]: SSE Buyer, Inc., Supply Source Enterprises, Inc., Impact Products LLC, The Safety Zone, LLC and SSE Parent, LP, Limited partnership class A-2 units    
Shares/Units 2,173 2,173
Amortized Cost $ 1.1 [5] $ 1.1 [1]
Fair Value 0.0 [5] 0.0 [1]
Investment, Identifier [Axis]: SSE Buyer, Inc., Supply Source Enterprises, Inc., Impact Products LLC, The Safety Zone, LLC and SSE Parent, LP, Second lien senior secured loan    
Principal 23.4 [5],[9] 21.0 [1],[10]
Amortized Cost 21.0 [5],[9] 21.0 [1],[10]
Fair Value $ 8.2 [5],[9] $ 14.3 [1],[10]
Investment, Identifier [Axis]: SV-Burton Holdings, LLC and LBC Breeze Holdings LLC, Class A units    
Shares/Units   4,296
Amortized Cost   $ 4.3
Fair Value   $ 4.8
Investment, Identifier [Axis]: SV-Burton Holdings, LLC and LBC Breeze Holdings LLC, First lien senior secured loan    
Coupon [3]   9.93%
Spread [3]   5.50%
Principal [1],[7]   $ 1.3
Amortized Cost [1],[7]   1.3
Fair Value [1],[7]   $ 1.3
Investment, Identifier [Axis]: SVP-Singer Holdings Inc. and SVP-Singer Holdings LP, Class A common units    
Shares/Units 6,264,706 6,264,706
Amortized Cost $ 26.1 [5] $ 26.1 [1]
Fair Value 0.0 [5] $ 4.0 [1]
Investment, Identifier [Axis]: SVP-Singer Holdings Inc. and SVP-Singer Holdings LP, First lien senior secured loan    
Coupon [3]   11.48%
Spread [3]   6.75%
Principal 44.2 [5],[9] $ 44.4 [1],[7]
Amortized Cost 41.9 [5],[9] 43.5 [1],[7]
Fair Value $ 33.2 [5],[9] $ 36.4 [1],[7]
Investment, Identifier [Axis]: Safe Home Security, Inc., Security Systems Inc., Safe Home Monitoring, Inc., National Protective Services, Inc., Bright Integrations LLC and Medguard Alert, Inc., First lien senior secured loan    
Coupon 12.47% [2] 11.63% [3]
Spread 7.25% [2] 7.25% [3]
Principal $ 47.6 [4],[5] $ 47.9 [1],[7]
Amortized Cost 47.6 [4],[5] 47.9 [1],[7]
Fair Value $ 47.6 [4],[5] $ 47.9 [1],[7]
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC, First lien senior secured loan    
Coupon [3]   10.13%
Coupon, PIK [3]   1.63%
Spread [3]   5.75%
Principal [1],[7]   $ 14.0
Amortized Cost [1],[7]   14.0
Fair Value [1],[7]   $ 13.9
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC, First lien senior secured revolving loan    
Coupon [3]   10.14%
Spread [3]   5.75%
Principal [1],[7]   $ 5.9
Amortized Cost [1],[7]   5.9
Fair Value [1],[7]   $ 5.9
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC, Series A units    
Shares/Units   732
Amortized Cost   $ 15.6
Fair Value   $ 16.0
Investment, Identifier [Axis]: SageSure Holdings, LLC and SageSure LLC, Second lien senior secured loan    
Coupon [2] 10.97%  
Spread [2] 5.75%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.7  
Fair Value [4],[5] $ 0.7  
Investment, Identifier [Axis]: SageSure Holdings, LLC and SageSure LLC, Series A units    
Shares/Units 886  
Amortized Cost $ 19.6  
Fair Value $ 22.6  
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC, Tender Lawn Care ULC and Landscape Parallel Partners, L.P., Class A units    
Shares/Units 5,154 4,502
Amortized Cost $ 12.9 [5] $ 11.1 [1]
Fair Value $ 15.8 [5] $ 14.7 [1]
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC, Tender Lawn Care ULC and Landscape Parallel Partners, L.P., First lien senior secured loan    
Coupon 10.95% [2] 10.14% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 1.9 [4],[5] $ 0.6 [1],[7]
Amortized Cost 1.9 [4],[5] 0.6 [1],[7]
Fair Value $ 1.9 [4],[5] $ 0.6 [1],[7]
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC, Tender Lawn Care ULC and Landscape Parallel Partners, L.P., First lien senior secured revolving loan    
Coupon 10.95% [2] 10.14% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.6 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.6 [4],[5] 0.2 [1],[7]
Fair Value $ 0.6 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: SelectQuote, Inc., First lien senior secured loan    
Coupon 13.20% [2] 12.42% [3]
Coupon, PIK 2.00% [2] 2.00% [3]
Spread 8.00% [2] 8.00% [3]
Principal $ 22.3 [4],[5] $ 22.2 [1],[7]
Amortized Cost 22.3 [4],[5] 22.2 [1],[7]
Fair Value 19.6 [4],[5] 19.5 [1],[7]
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC    
Fair Value $ 1,237.1 $ 1,248.6
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC, Membership interest    
Shares (as a percent) 87.50% 87.50%
Amortized Cost $ 0.0 [6] $ 0.0 [8]
Fair Value $ 0.0 [6] $ 0.0 [8]
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC, Subordinated certificates    
Coupon 13.27% [2] 12.77% [3]
Spread 8.00% [2] 8.00% [3]
Shares/Units 1,289  
Principal [8],[21]   $ 1,274.1
Amortized Cost $ 1,288.8 [6],[22] 1,274.1 [8],[21]
Fair Value $ 1,237.1 [6],[22] $ 1,248.6 [8],[21]
Investment, Identifier [Axis]: Service Logic Acquisition, Inc. and MSHC, Inc., First lien senior secured loan    
Coupon 10.55% [2] 9.59%
Spread 5.50% [2] 5.50%
Principal $ 3.4 [4],[5] $ 0.1
Amortized Cost 3.4 [4],[5] 0.1
Fair Value $ 3.4 [4],[5] $ 0.1
Investment, Identifier [Axis]: Shermco Intermediate Holdings, Inc., First lien senior secured revolving loan    
Coupon 9.60% [2] 10.82% [3]
Spread 4.50% [2] 6.50% [3]
Principal $ 0.6 [5] $ 2.7 [1]
Amortized Cost 0.5 [5] 2.6 [1]
Fair Value 0.6 [5] 2.7 [1]
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC    
Fair Value $ 4.5 $ 6.0
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, Class A preferred units    
Shares/Units 50,000 50,000
Amortized Cost $ 5.0 [5] $ 5.0 [1]
Fair Value $ 0.0 [5] $ 1.8 [1]
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, Class C preferred units    
Shares/Units 50,000 50,000
Amortized Cost $ 5.0 [5] $ 5.0 [1]
Fair Value $ 0.0 [5] $ 1.8 [1]
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, First lien senior secured loan    
Coupon 10.74% [2] 9.84% [3]
Spread 5.50% [2] 5.00% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, First lien senior secured revolving loan    
Coupon [2] 12.50%  
Spread [2] 4.25%  
Principal [4],[5] $ 2.3  
Amortized Cost [4],[5] 2.3  
Fair Value [4],[5] $ 2.3  
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, Preferred units    
Shares/Units 14,591 14,591
Amortized Cost $ 1.6 [5] $ 1.6 [1]
Fair Value $ 2.1 [5] $ 2.3 [1]
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., Common stock    
Shares/Units 75,990 7,599,000
Amortized Cost $ 7.6 [5] $ 7.6 [1]
Fair Value $ 16.5 [5] $ 13.9 [1]
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan 1    
Coupon 10.90% [2] 10.90% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 26.6 [4],[5] $ 26.8 [1],[7]
Amortized Cost 26.6 [4],[5] 26.8 [1],[7]
Fair Value $ 26.6 [4],[5] $ 26.8 [1],[7]
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan 2    
Coupon 10.90% [2] 10.90% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan 3    
Coupon [2] 11.39%  
Spread [2] 6.00%  
Principal [4],[5] $ 6.2  
Amortized Cost [4],[5] 6.2  
Fair Value [4],[5] $ 6.2  
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured revolving loan    
Coupon [3]   10.59%
Spread [3]   6.00%
Principal [1],[7]   $ 1.8
Amortized Cost [1],[7]   1.8
Fair Value [1],[7]   $ 1.8
Investment, Identifier [Axis]: Silk Holdings III Corp. and Silk Holdings I Corp., Common stock    
Shares/Units 14,199  
Amortized Cost [5] $ 14.2  
Fair Value [5] $ 14.2  
Investment, Identifier [Axis]: Silk Holdings III Corp. and Silk Holdings I Corp., First lien senior secured loan    
Coupon [2] 12.77%  
Spread [2] 7.75%  
Principal [4],[5] $ 16.8  
Amortized Cost [4],[5] 16.8  
Fair Value [4],[5] $ 16.3  
Investment, Identifier [Axis]: Silk Holdings III Corp. and Silk Holdings I Corp., First lien senior secured revolving loan    
Coupon [2] 11.02%  
Spread [2] 6.00%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: SilverBow Resources, Inc., Common stock    
Shares/Units 1,015,215 1,015,215
Amortized Cost $ 27.6 [5],[6],[11] $ 28.8 [1]
Fair Value $ 29.6 [5],[6],[11] $ 28.7 [1]
Investment, Identifier [Axis]: SiroMed Physician Services, Inc. and SiroMed Equity Holdings, LLC, Common units    
Shares/Units 684,854 684,854
Amortized Cost $ 4.8 [5] $ 4.8 [1]
Fair Value $ 1.2 [5] $ 1.2 [1]
Investment, Identifier [Axis]: SiroMed Physician Services, Inc. and SiroMed Equity Holdings, LLC, First lien senior secured loan    
Coupon 9.95% [2] 9.48% [3]
Spread 4.75% [2] 4.75% [3]
Principal $ 9.2 [4],[5] $ 10.3 [1],[7]
Amortized Cost 9.2 [4],[5] 10.3 [1],[7]
Fair Value $ 9.2 [4],[5] $ 10.3 [1],[7]
Investment, Identifier [Axis]: Smarsh Inc. and Skywalker TopCo, LLC, Common units    
Shares/Units 1,742,623 1,742,623
Amortized Cost $ 6.3 [5] $ 6.3 [1]
Fair Value $ 9.2 [5] $ 8.6 [1]
Investment, Identifier [Axis]: Smarsh Inc. and Skywalker TopCo, LLC, First lien senior secured loan    
Coupon 11.84% [2] 11.29% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 11.9 [4],[5] $ 11.9 [1],[7]
Amortized Cost 11.9 [4],[5] 11.9 [1],[7]
Fair Value $ 11.9 [4],[5] $ 11.9 [1],[7]
Investment, Identifier [Axis]: SocialFlow, Inc., Warrant to purchase shares of Series C preferred stock    
Shares/Units 215,331 215,331
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: Sophia, L.P., Second lien senior secured loan    
Coupon 13.20% [2] 12.73% [3]
Spread 8.00% [2] 8.00% [3]
Principal $ 105.9 [4],[5] $ 105.9 [1],[7]
Amortized Cost 105.9 [4],[5] 105.9 [1],[7]
Fair Value $ 102.7 [4],[5] $ 103.8 [1],[7]
Investment, Identifier [Axis]: SoundCloud Limited, Common stock    
Shares/Units 73,422 73,422
Amortized Cost $ 0.4 [5],[6] $ 0.4 [1],[8]
Fair Value $ 0.7 [5],[6] $ 0.7 [1],[8]
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp, First lien senior secured loan    
Coupon 11.84% [2] 11.18% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 2.6 [4],[5] $ 2.6 [1],[7]
Amortized Cost 2.6 [4],[5] 2.6 [1],[7]
Fair Value $ 2.6 [4],[5] $ 2.5 [1],[7]
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp, First lien senior secured revolving loan    
Coupon [2] 11.70%  
Spread [2] 6.50%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp, Limited partner interests    
Shares/Units 1,010 1,010
Amortized Cost $ 10.2 [5] $ 10.2 [1]
Fair Value $ 10.7 [5] $ 10.5 [1]
Investment, Identifier [Axis]: Spring Insurance Solutions, LLC, First lien senior secured loan    
Coupon 11.89% [2] 11.23% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 21.9 [4],[5] $ 22.0 [1],[7]
Amortized Cost 21.9 [4],[5] 22.0 [1],[7]
Fair Value 19.3 [4],[5] $ 19.6 [1],[7]
Investment, Identifier [Axis]: Stamps.com Inc., First lien senior secured loan    
Coupon [3]   10.13%
Spread [3]   5.75%
Principal [1],[7]   $ 146.8
Amortized Cost [1],[7]   146.8
Fair Value [1],[7]   140.9
Investment, Identifier [Axis]: Startec Equity, LLC    
Fair Value $ 0.0 0.0
Investment, Identifier [Axis]: Startec Equity, LLC, Member interest    
Shares/Units 190,581  
Amortized Cost $ 0.0 0.0
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 1    
Coupon 11.79% [2] 10.54% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 46.3 [4],[5],[6] $ 51.3 [1],[7],[8]
Amortized Cost 46.3 [4],[5],[6] 51.3 [1],[7],[8]
Fair Value $ 46.3 [4],[5],[6] $ 50.3 [1],[7],[8]
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 2    
Coupon 12.16% [2] 11.08% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 3.3 [4],[5],[6] $ 5.2 [1],[7],[8]
Amortized Cost 3.3 [4],[5],[6] 5.2 [1],[7],[8]
Fair Value $ 3.3 [4],[5],[6] $ 5.1 [1],[7],[8]
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 3    
Coupon 14.00% [2] 13.75% [3]
Spread 5.75% [2] 6.25% [3]
Principal $ 0.8 [4],[5],[6] $ 2.5 [1],[7],[8]
Amortized Cost 0.8 [4],[5],[6] 2.5 [1],[7],[8]
Fair Value $ 0.8 [4],[5],[6] $ 2.4 [1],[7],[8]
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 4    
Coupon [2] 12.15%  
Spread [2] 6.75%  
Principal [4],[5],[6] $ 3.1  
Amortized Cost [4],[5],[6] 3.1  
Fair Value [4],[5],[6] $ 3.1  
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 5    
Coupon [2] 12.12%  
Spread [2] 6.75%  
Principal [4],[5],[6] $ 1.4  
Amortized Cost [4],[5],[6] 1.4  
Fair Value [4],[5],[6] $ 1.4  
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 6    
Coupon [2] 11.85%  
Spread [2] 6.75%  
Principal [4],[5],[6] $ 3.4  
Amortized Cost [4],[5],[6] 3.4  
Fair Value [4],[5],[6] $ 3.4  
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 7    
Coupon [2] 12.15%  
Spread [2] 6.75%  
Principal [4],[5],[6] $ 0.4  
Amortized Cost [4],[5],[6] 0.4  
Fair Value [4],[5],[6] $ 0.4  
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Limited partnership interests    
Shares/Units 614,950 614,950
Amortized Cost $ 6.2 [5],[6] $ 6.2 [1],[8]
Fair Value $ 8.5 [5],[6] $ 7.0 [1],[8]
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Second lien senior secured loan 1    
Coupon 12.09% [2] 11.54% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 42.8 [4],[5] $ 42.8 [1],[7]
Amortized Cost 42.8 [4],[5] 42.8 [1],[7]
Fair Value $ 41.5 [4],[5] $ 41.1 [1],[7]
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Second lien senior secured loan 2    
Coupon 12.09% [2] 11.54% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 10.3 [4],[5] $ 10.3 [1],[7]
Amortized Cost 10.3 [4],[5] 10.3 [1],[7]
Fair Value $ 10.0 [4],[5] $ 9.9 [1],[7]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class A redeemable shares    
Shares/Units 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [1],[8]
Fair Value $ 2.7 [5],[6] $ 2.2 [1],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class B redeemable shares    
Shares/Units 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [1],[8]
Fair Value $ 2.7 [5],[6] $ 2.2 [1],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class C redeemable shares    
Shares/Units 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [1],[8]
Fair Value $ 2.7 [5],[6] $ 2.2 [1],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class D redeemable shares    
Shares/Units 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [1],[8]
Fair Value $ 2.7 [5],[6] $ 2.2 [1],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class E redeemable shares    
Shares/Units 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [1],[8]
Fair Value $ 2.7 [5],[6] $ 2.2 [1],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class F redeemable shares    
Shares/Units 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [1],[8]
Fair Value $ 2.7 [5],[6] $ 2.2 [1],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class G redeemable shares    
Shares/Units 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [1],[8]
Fair Value $ 2.7 [5],[6] $ 2.2 [1],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class H redeemable shares    
Shares/Units 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [1],[8]
Fair Value $ 2.7 [5],[6] $ 2.2 [1],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class I redeemable shares    
Shares/Units 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [1],[8]
Fair Value $ 2.7 [5],[6] $ 2.2 [1],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., First lien senior secured loan    
Coupon 3.75% [2] 375.00% [3]
Principal $ 67.3 [5],[6] $ 66.0 [1],[8]
Amortized Cost 73.6 [5],[6] 73.6 [1],[8]
Fair Value $ 67.3 [5],[6] $ 66.0 [1],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Ordinary shares    
Shares/Units 3,958 3,958
Amortized Cost $ 0.0 [5],[6] $ 0.0 [1],[8]
Fair Value $ 0.2 [5],[6] $ 0.2 [1],[8]
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, Class A units    
Shares/Units 79,688 79,687
Amortized Cost $ 8.0 [5] $ 8.0 [1]
Fair Value $ 8.3 [5] $ 9.3 [1]
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured loan 1    
Coupon 10.97% [2] 10.13% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 52.0 [4],[5] $ 52.0 [1],[7]
Amortized Cost 52.0 [4],[5] 52.0 [1],[7]
Fair Value $ 50.4 [4],[5] $ 50.4 [1],[7]
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured loan 2    
Coupon 10.97% [2] 10.13% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 5.3 [4],[5] $ 5.3 [1],[7]
Amortized Cost 5.3 [4],[5] 5.3 [1],[7]
Fair Value $ 5.2 [4],[5] 5.2 [1],[7]
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured revolving loan    
Coupon [2] 13.00%  
Spread [2] 4.75%  
Principal $ 0.5 [4],[5],[13] 0.0 [15]
Amortized Cost 0.5 [4],[5],[13] 0.0 [15]
Fair Value $ 0.5 [4],[5],[13] 0.0 [15]
Investment, Identifier [Axis]: Sundance Energy Inc.    
Fair Value   $ 0.0
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured loan 1    
Coupon 11.42% [2] 10.75% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 20.1 [4],[5] $ 20.1 [1],[7]
Amortized Cost 19.8 [4],[5] 19.8 [1],[7]
Fair Value $ 20.1 [4],[5] $ 19.9 [1],[7]
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured loan 2    
Coupon 11.61% [2] 10.93% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 0.8 [4],[5] $ 0.8 [1],[7]
Amortized Cost 0.8 [4],[5] 0.8 [1],[7]
Fair Value $ 0.8 [4],[5] 0.8 [1],[7]
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured revolving loan    
Coupon [2] 11.49%  
Spread [2] 6.25%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.6  
Fair Value [4],[5] 0.7  
Investment, Identifier [Axis]: Sunk Rock Foundry Partners LP, Hatteras Electrical Manufacturing Holding Company and Sigma Electric Manufacturing Corporation, Diecast Beacon, First lien senior secured revolving loan    
Principal [15]   0.0
Amortized Cost 0.0 [5],[16] 0.0 [15]
Fair Value $ 0.0 [5],[16] $ 0.0 [15]
Investment, Identifier [Axis]: Sunrun Atlas Depositor 2019-2, LLC and Sunrun Atlas Holdings 2019-2, LLC, First lien senior secured loan    
Coupon 3.61% [2] 3.61% [3]
Principal $ 0.1 [5] $ 0.1 [1]
Amortized Cost 0.1 [5] 0.1 [1]
Fair Value $ 0.1 [5] $ 0.1 [1]
Investment, Identifier [Axis]: Sunrun Atlas Depositor 2019-2, LLC and Sunrun Atlas Holdings 2019-2, LLC, Senior subordinated loan    
Coupon 12.05% [2] 11.16% [3]
Coupon, PIK 7.36% [2] 5.01% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 153.1 [4],[5] $ 147.9 [1],[7]
Amortized Cost 153.1 [4],[5] 147.9 [1],[7]
Fair Value $ 140.9 [4],[5] $ 136.1 [1],[7]
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC, Senior subordinated revolving loan 1    
Coupon 8.44% [2] 7.86% [3]
Spread 3.50% [2] 3.50% [3]
Principal $ 45.0 [5],[6] $ 24.4 [1],[8]
Amortized Cost 45.0 [5],[6] 24.4 [1],[8]
Fair Value $ 44.1 [5],[6] $ 24.2 [1],[8]
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC, Senior subordinated revolving loan 2    
Coupon 12.81% [2] 8.95% [3]
Spread 7.88% [2] 7.88% [3]
Principal $ 30.0 $ 16.3 [1],[8]
Amortized Cost 30.0 16.3 [1],[8]
Fair Value $ 29.4 $ 16.1 [1],[8]
Investment, Identifier [Axis]: Sunrun Xanadu Issuer 2019-1, LLC and Sunrun Xanadu Holdings 2019-1, LLC, First lien senior secured loan    
Coupon 3.98% [2] 3.98% [3]
Principal $ 0.3 [5] $ 0.3 [1]
Amortized Cost 0.3 [5] 0.3 [1]
Fair Value $ 0.3 [5] $ 0.3 [1]
Investment, Identifier [Axis]: Sunrun Xanadu Issuer 2019-1, LLC and Sunrun Xanadu Holdings 2019-1, LLC, Senior subordinated loan    
Coupon 10.00% [2] 10.00% [3]
Coupon, PIK 5.00% [2] 6.00% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 74.3 [4],[5] $ 72.5 [1],[7]
Amortized Cost 74.3 [4],[5] 72.5 [1],[7]
Fair Value $ 69.1 [4],[5] $ 67.3 [1],[7]
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., First lien senior secured loan    
Coupon 9.65% [2] 8.69% [3]
Spread 4.50% [2] 4.50% [3]
Principal $ 12.3 [4],[5],[11] $ 12.4 [1],[7]
Amortized Cost 12.3 [4],[5],[11] 12.4 [1],[7]
Fair Value $ 11.0 [4],[5],[11] $ 10.5 [1],[7]
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., First lien senior secured revolving loan    
Coupon [3]   10.25%
Spread [3]   2.75%
Principal [1]   $ 3.1
Amortized Cost [1]   3.1
Fair Value [1]   $ 2.6
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Second lien senior secured loan    
Coupon 13.02% [2] 12.07% [3]
Spread 7.88% [2] 7.88% [3]
Principal $ 76.2 [4],[5] $ 76.2 [1],[7]
Amortized Cost 76.2 [4],[5] 76.2 [1],[7]
Fair Value $ 69.4 [4],[5] $ 64.8 [1],[7]
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Series C-1 preferred shares    
Coupon, PIK 11.00% [2] 11.00% [3]
Shares/Units 75,939 75,939
Amortized Cost $ 100.2 [5] $ 94.9 [1]
Fair Value $ 82.2 [5] $ 73.1 [1]
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Series C-2 preferred shares    
Coupon, PIK 11.00% [2] 11.00% [3]
Shares/Units 40,115 40,115
Amortized Cost $ 50.2 [5] $ 47.5 [1]
Fair Value $ 41.1 [5] $ 36.6 [1]
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Series C-3 preferred shares    
Coupon, PIK 11.00% [2] 11.00% [3]
Shares/Units 16,201 16,201
Amortized Cost $ 19.6 [5] $ 18.5 [1]
Fair Value $ 16.0 [5] $ 14.3 [1]
Investment, Identifier [Axis]: Synergy HomeCare Franchising, LLC and NP/Synergy Holdings, LLC, Common units    
Shares/Units 550 550
Amortized Cost $ 0.5 $ 0.5
Fair Value $ 1.1 $ 1.0
Investment, Identifier [Axis]: Synergy HomeCare Franchising, LLC and NP/Synergy Holdings, LLC, First lien senior secured loan    
Coupon 11.14% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 13.1 [4],[5] $ 13.1 [1],[7]
Amortized Cost 13.1 [4],[5] 13.1 [1],[7]
Fair Value $ 13.1 [4],[5] $ 13.1 [1],[7]
Investment, Identifier [Axis]: Systems Planning and Analysis, Inc., First lien senior secured loan    
Coupon [2] 11.24%  
Spread [2] 5.75%  
Principal [4],[5] $ 1.0  
Amortized Cost [4],[5] 1.0  
Fair Value [4],[5] $ 1.0  
Investment, Identifier [Axis]: Systems Planning and Analysis, Inc., First lien senior secured revolving loan 1    
Coupon [2] 11.10%  
Spread [2] 5.75%  
Principal [4],[5] $ 1.1  
Amortized Cost [4],[5] 1.0  
Fair Value [4],[5] $ 1.1  
Investment, Identifier [Axis]: Systems Planning and Analysis, Inc., First lien senior secured revolving loan 2    
Coupon [2] 10.93%  
Spread [2] 5.75%  
Principal [4],[5] $ 0.6  
Amortized Cost [4],[5] 0.5  
Fair Value [4],[5] $ 0.6  
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 1    
Coupon 11.00% [2] 9.98% [3]
Spread 6.25% [2] 6.00% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1]
Amortized Cost 0.1 [4],[5] 0.1 [1]
Fair Value $ 0.1 [4],[5] $ 0.1 [1]
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 2    
Coupon 11.63% [2] 9.41% [3]
Spread 6.25% [2] 6.00% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1]
Amortized Cost 0.1 [4],[5] 0.1 [1]
Fair Value $ 0.1 [4],[5] $ 0.1 [1]
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 3    
Coupon 11.25% [2] 10.75% [3]
Spread 6.25% [2] 6.00% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1]
Amortized Cost 0.1 [4],[5] 0.1 [1]
Fair Value $ 0.1 [4],[5] $ 0.1 [1]
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 4    
Coupon [3]   10.46%
Spread [3]   6.00%
Principal [1]   $ 0.1
Amortized Cost [1]   0.1
Fair Value [1]   $ 0.1
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 1    
Coupon 10.64% [2] 9.98% [3]
Spread 5.25% [2] 5.25% [3]
Principal $ 34.3 [4],[5] $ 34.4 [1],[7]
Amortized Cost 34.3 [4],[5] 34.4 [1],[7]
Fair Value $ 34.3 [4],[5] $ 34.4 [1],[7]
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 2    
Coupon 10.64% [2] 9.98% [3]
Spread 5.25% [2] 5.25% [3]
Principal $ 6.5 [4],[5] $ 6.5 [1],[7]
Amortized Cost 6.5 [4],[5] 6.5 [1],[7]
Fair Value $ 6.5 [4],[5] $ 6.5 [1],[7]
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 3    
Coupon [2] 10.64%  
Spread [2] 5.25%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured revolving loan    
Coupon [3]   9.57%
Spread [3]   5.25%
Principal [1],[7]   $ 0.1
Amortized Cost [1],[7]   0.1
Fair Value [1],[7]   $ 0.1
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 1    
Coupon 10.95% [2] 9.88% [3]
Spread 5.75% [2] 5.50% [3]
Principal $ 0.1 [4],[5] $ 17.0 [1],[7]
Amortized Cost 0.1 17.0 [1],[7]
Fair Value $ 0.1 $ 16.7 [1],[7]
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 2    
Coupon 10.95% [2] 10.13% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 14.8 [4],[5] $ 14.9 [1],[7]
Amortized Cost 14.8 [4],[5] 14.9 [1],[7]
Fair Value $ 14.6 [4],[5] $ 14.7 [1],[7]
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 3    
Coupon 10.70% [2] 10.13% [3]
Spread 5.50% [2] 5.75% [3]
Principal $ 20.4 [4],[5] $ 0.1 [1],[7]
Amortized Cost 20.4 [4],[5] 0.1 [1],[7]
Fair Value $ 19.9 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured revolving loan    
Coupon [2] 10.95%  
Spread [2] 5.75%  
Principal [4],[5] $ 1.3  
Amortized Cost [4],[5] 1.3  
Fair Value [4],[5] $ 1.3  
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., Class A-2 units    
Shares/Units 4,849 4,849
Amortized Cost $ 4.8 $ 4.8
Fair Value $ 6.4 $ 5.9
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured loan    
Coupon [3]   9.48%
Spread [3]   5.75%
Principal [7]   $ 35.1
Amortized Cost [7]   35.1
Fair Value [7]   $ 35.1
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured loan 1    
Coupon [2] 10.64%  
Spread [2] 5.25%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured loan 2    
Coupon [2] 10.64%  
Spread [2] 5.25%  
Principal [4],[5] $ 34.7  
Amortized Cost [4],[5] 34.7  
Fair Value [4],[5] $ 34.7  
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured revolving loan    
Coupon 10.64% [2] 10.17% [3]
Spread 5.25% [2] 5.75% [3]
Principal $ 1.2 [4],[5] $ 1.3 [1],[7]
Amortized Cost 1.2 [4],[5] 1.3 [1],[7]
Fair Value $ 1.2 [4],[5] $ 1.3 [1],[7]
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., Class A units    
Shares/Units 37,020 37,020
Amortized Cost $ 3.8 $ 3.8
Fair Value $ 7.2 $ 4.6
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured loan    
Coupon [3]   8.92%
Coupon, PIK [3]   0.50%
Spread [3]   4.75%
Principal [1],[7]   $ 1.4
Amortized Cost [1],[7]   1.4
Fair Value [1],[7]   $ 1.4
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured loan 1    
Coupon [2] 10.92%  
Spread [2] 5.33%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured loan 2    
Coupon [2] 10.96%  
Spread [2] 5.38%  
Principal [4],[5] $ 1.0  
Amortized Cost [4],[5] 1.0  
Fair Value [4],[5] $ 1.0  
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured revolving loan 1    
Coupon 10.40% [2] 9.51% [3]
Coupon, PIK [3]   0.50%
Spread 5.38% [2] 4.75% [3]
Principal $ 0.6 [4],[5] $ 0.4 [1],[7]
Amortized Cost 0.6 [4],[5] 0.4 [1],[7]
Fair Value $ 0.5 [4],[5] $ 0.4 [1],[7]
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured revolving loan 2    
Coupon 10.96% [2] 10.05% [3]
Coupon, PIK [3]   0.50%
Spread 5.38% [2] 5.63% [3]
Principal $ 0.1 [4],[5] $ 0.4 [1],[7]
Amortized Cost 0.1 [4],[5] 0.4 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.4 [1],[7]
Investment, Identifier [Axis]: Teasdale Foods, Inc. and Familia Group Holdings Inc., First lien senior secured loan    
Coupon 12.84% [2] 12.29% [3]
Coupon, PIK 1.00% [2] 1.00% [3]
Spread 7.25% [2] 7.25% [3]
Principal $ 76.1 [4],[5] $ 75.9 [1],[7]
Amortized Cost 76.1 [4],[5] 75.9 [1],[7]
Fair Value $ 68.5 [4],[5] $ 65.3 [1],[7]
Investment, Identifier [Axis]: Teasdale Foods, Inc. and Familia Group Holdings Inc., Warrant to purchase shares of common stock    
Shares/Units 57,827 57,827
Amortized Cost $ 0.0 [5] $ 0.0
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: Tempus Labs, Inc., First lien senior secured loan    
Coupon [3]   10.49%
Spread [3]   7.00%
Principal [1],[7]   $ 71.4
Amortized Cost [1],[7]   71.4
Fair Value [1],[7]   $ 69.6
Investment, Identifier [Axis]: Tempus Labs, Inc., First lien senior secured loan 1    
Coupon [2] 13.14%  
Coupon, PIK [2] 3.25%  
Spread [2] 8.25%  
Principal [4],[5] $ 71.4  
Amortized Cost [4],[5] 71.4  
Fair Value [4],[5] $ 71.4  
Investment, Identifier [Axis]: Tempus Labs, Inc., First lien senior secured loan 2    
Coupon [2] 13.49%  
Coupon, PIK [2] 3.25%  
Spread [2] 8.25%  
Principal [4],[5] $ 20.9  
Amortized Cost [4],[5] 20.9  
Fair Value [4],[5] $ 20.9  
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 1    
Coupon [3]   9.98%
Spread [3]   5.60%
Principal [1],[7]   $ 5.0
Amortized Cost [1],[7]   5.0
Fair Value [1],[7]   $ 5.0
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 2    
Coupon [3]   9.98%
Spread [3]   5.60%
Principal [1],[7]   $ 2.0
Amortized Cost [1],[7]   2.0
Fair Value [1],[7]   $ 2.0
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 3    
Coupon [3]   9.98%
Spread [3]   5.60%
Principal [1],[7]   $ 1.8
Amortized Cost [1],[7]   1.8
Fair Value [1],[7]   $ 1.8
Investment, Identifier [Axis]: The Alaska Club Partners, LLC, Athletic Club Partners LLC and The Alaska Club, Inc., First lien senior secured loan    
Coupon 11.98% [2] 14.00% [3]
Coupon, PIK 2.63% [2] 2.00% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 12.4 [4],[5] $ 12.5 [1],[7]
Amortized Cost 12.4 [4],[5] 12.5 [1],[7]
Fair Value $ 12.4 [4],[5] $ 12.5 [1],[7]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, Class A units    
Shares/Units 6,308,866 5,667,160
Amortized Cost $ 6.3 $ 5.7
Fair Value $ 8.1 $ 8.5
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, Class C units    
Shares/Units 333,510  
Amortized Cost $ 0.0  
Fair Value $ 0.4  
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 1    
Coupon 11.81% [2] 9.57% [3]
Spread 6.25% [2] 6.00% [3]
Principal $ 0.1 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.1 [4],[5] 0.2 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 2    
Coupon 11.80% [2] 11.08% [3]
Spread 6.25% [2] 6.00% [3]
Principal $ 0.1 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.1 [4],[5] 0.2 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 3    
Coupon [2] 11.15%  
Spread [2] 6.00%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 4    
Coupon [2] 12.26%  
Spread [2] 6.75%  
Principal [4],[5] $ 1.6  
Amortized Cost [4],[5] 1.6  
Fair Value [4],[5] $ 1.6  
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 1    
Coupon 11.80% [2] 10.10% [3]
Spread 6.25% [2] 6.00% [3]
Principal $ 3.3 [4],[5] $ 8.9 [1],[7]
Amortized Cost 3.3 [4],[5] 8.9 [1],[7]
Fair Value $ 3.2 [4],[5] $ 8.8 [1],[7]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 2    
Coupon 11.14% [2] 12.50% [3]
Spread 6.00% [2] 5.00% [3]
Principal $ 2.3 [4],[5] $ 2.5 [1],[7]
Amortized Cost 2.3 [4],[5] 2.5 [1],[7]
Fair Value $ 2.2 [4],[5] $ 2.5 [1],[7]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 3    
Coupon [2] 11.79%  
Spread [2] 6.25%  
Principal [4],[5] $ 1.3  
Amortized Cost [4],[5] 1.3  
Fair Value [4],[5] $ 1.3  
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 4    
Coupon [2] 11.36%  
Spread [2] 6.25%  
Principal [4],[5] $ 3.0  
Amortized Cost [4],[5] 3.0  
Fair Value [4],[5] $ 2.9  
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 5    
Coupon [2] 13.50%  
Spread [2] 5.25%  
Principal [4],[5] $ 2.9  
Amortized Cost [4],[5] 2.9  
Fair Value [4],[5] $ 2.8  
Investment, Identifier [Axis]: The Edelman Financial Center, LLC, Second lien senior secured loan    
Coupon 11.94% [2] 11.13% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 19.3 [5],[6],[11] $ 13.4 [1],[8],[12]
Amortized Cost 17.6 [5],[6],[11] 11.8 [1],[8],[12]
Fair Value $ 18.6 [5],[6],[11] $ 12.0 [1],[8],[12]
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, Common units    
Shares/Units 7,199 7,199
Amortized Cost $ 0.0 [5],[6] $ 0.0 [8]
Fair Value $ 0.0 [5],[6] $ 0.0 [8]
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan    
Coupon [3]   10.51%
Spread [3]   5.50%
Principal [1],[8]   $ 3.5
Amortized Cost [1],[8]   3.5
Fair Value [1],[8]   $ 3.4
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan 1    
Coupon [2] 11.34%  
Spread [2] 5.75%  
Principal [4],[5],[6] $ 2.8  
Amortized Cost [4],[5],[6] 2.8  
Fair Value [4],[5],[6] $ 2.7  
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan 2    
Coupon [2] 11.11%  
Spread [2] 5.75%  
Principal [4],[5],[6] $ 0.3  
Amortized Cost [4],[5],[6] 0.3  
Fair Value [4],[5],[6] $ 0.3  
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan 3    
Coupon [2] 11.00%  
Spread [2] 5.75%  
Principal [4],[5],[6] $ 0.2  
Amortized Cost [4],[5],[6] 0.2  
Fair Value [4],[5],[6] $ 0.2  
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan 4    
Coupon [2] 10.83%  
Spread [2] 5.75%  
Principal [4],[5],[6] $ 0.4  
Amortized Cost [4],[5],[6] 0.4  
Fair Value [4],[5],[6] $ 0.4  
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured revolving loan    
Coupon 13.00% [2] 12.00% [3]
Spread 4.75% [2] 4.50% [3]
Principal $ 0.1 [4],[5],[6] $ 0.1 [1],[8]
Amortized Cost 0.1 [4],[5],[6] 0.1 [1],[8]
Fair Value $ 0.1 [4],[5],[6] $ 0.1 [1],[8]
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, Senior subordinated loan    
Coupon, PIK 12.00% [2] 12.00% [3]
Principal $ 3.2 [5],[6] $ 3.0 [1],[8]
Amortized Cost 3.2 [5],[6] 3.0 [1],[8]
Fair Value $ 3.0 [5],[6] $ 2.9 [1],[8]
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, Series A preferred units    
Shares/Units 7,199 7,199
Amortized Cost $ 7.2 [5],[6] $ 7.2 [1],[8]
Fair Value $ 3.9 [5],[6] $ 4.8 [1],[8]
Investment, Identifier [Axis]: The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P., Class A units    
Shares/Units 11,242 10,744
Amortized Cost $ 11.6 [5] $ 11.3 [1]
Fair Value $ 16.9 [5] $ 15.7 [1]
Investment, Identifier [Axis]: The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P., First lien senior secured loan    
Coupon 11.39% [2] 10.43% [3]
Coupon, PIK 2.75% [2] 2.75% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 215.5 [4],[5] $ 213.5 [1],[7]
Amortized Cost 215.5 [4],[5] 213.5 [1],[7]
Fair Value $ 213.4 [4],[5] $ 209.3 [1],[7]
Investment, Identifier [Axis]: The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P., First lien senior secured revolving loan    
Coupon 10.92% [2] 10.07% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 1.2 [4],[5],[13] $ 1.7 [1],[7],[14]
Amortized Cost 1.2 [4],[5],[13] 1.7 [1],[7],[14]
Fair Value $ 1.1 [4],[5],[13] $ 1.7 [1],[7],[14]
Investment, Identifier [Axis]: The Teaching Company Holdings, Inc., Common stock    
Shares/Units 15,393 15,393
Amortized Cost $ 0.0 [5],[6] $ 0.0
Fair Value $ 0.0 [5],[6] $ 0.0
Investment, Identifier [Axis]: The Teaching Company Holdings, Inc., Preferred stock    
Shares/Units 10,663 10,663
Amortized Cost $ 1.1 [5],[6] $ 1.1 [1]
Fair Value $ 1.3 [5],[6] $ 2.5 [1]
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, Class A units 1    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 1,443 1,443
Amortized Cost $ 2.0 $ 1.9
Fair Value $ 2.7 $ 3.1
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, Class A units 2    
Shares/Units 245 245
Amortized Cost $ 0.2 $ 0.2
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, Class B units 1    
Shares/Units 2,167,424 245,194
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, Class B units 2    
Shares/Units 245,194 2,167,424
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, First lien senior secured loan    
Coupon 10.09% [2] 9.23% [3]
Spread 4.75% [2] 4.50% [3]
Principal $ 37.2 [4],[5] $ 37.4 [1]
Amortized Cost 37.2 [4],[5] 37.4 [1]
Fair Value $ 36.1 [4],[5] $ 36.7 [1]
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, First lien senior secured revolving loan    
Coupon [2] 10.13%  
Spread [2] 5.00%  
Principal [4],[5] $ 0.8  
Amortized Cost [4],[5] 0.8  
Fair Value [4],[5] $ 0.8  
Investment, Identifier [Axis]: Therapy Brands Holdings LLC, Second lien senior secured loan    
Coupon 11.90% [2] 11.10% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 29.1 [4],[5] $ 29.1 [1],[7]
Amortized Cost 28.9 [4],[5] 28.9 [1],[7]
Fair Value $ 27.3 [4],[5] $ 27.9 [1],[7]
Investment, Identifier [Axis]: Thermostat Purchaser III, Inc., Second lien senior secured loan    
Coupon 12.66% [2] 11.98% [3]
Spread 7.25% [2] 7.25% [3]
Principal $ 23.0 [4],[5],[16] $ 23.0 [1],[7]
Amortized Cost 23.0 [4],[5],[16] 23.0 [1],[7]
Fair Value 22.1 [4],[5],[16] $ 22.1 [1],[7]
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., First lien senior secured loan    
Coupon [3]   9.18%
Spread [3]   4.50%
Principal [1],[7],[12]   $ 10.9
Amortized Cost [1],[7],[12]   10.4
Fair Value [1],[7],[12]   $ 9.7
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., First lien senior secured notes    
Coupon [3]   650.00%
Principal [1],[12]   $ 88.9
Amortized Cost [1],[12]   86.5
Fair Value [1],[12]   $ 74.9
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Limited partnership interests    
Shares/Units   12,250,000
Amortized Cost [1]   $ 12.3
Fair Value [1]   $ 10.7
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Second lien senior secured loan    
Coupon [3]   9.00%
Spread [3]   7.00%
Principal [1],[7]   $ 85.3
Amortized Cost [1],[7]   83.9
Fair Value [1],[7]   $ 69.9
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Series A preferred stock    
Coupon, PIK [3]   16.59%
Spread [3]   12.00%
Shares/Units   141,928
Amortized Cost [1]   $ 143.4
Fair Value [1]   143.1
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc.    
Fair Value $ 3.9 $ 3.7
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., Common stock    
Shares/Units 861,000 861,000
Amortized Cost $ 6.0 [5] $ 6.0 [1]
Fair Value $ 0.4 [5] $ 0.2 [1]
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., First lien senior secured loan 1    
Coupon 11.22% [2] 10.38% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 2.2 [4],[5] $ 2.2 [1],[7]
Amortized Cost 2.2 [4],[5] 2.2 [1],[7]
Fair Value $ 1.9 [4],[5] $ 1.9 [1],[7]
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., First lien senior secured loan 2    
Coupon 9.22% [2] 8.38% [3]
Spread 4.00% [2] 4.00% [3]
Principal $ 1.6 [4],[5] $ 1.6 [1],[7]
Amortized Cost 1.6 [4],[5] 1.6 [1],[7]
Fair Value $ 1.6 [4],[5] $ 1.6 [1],[7]
Investment, Identifier [Axis]: Touchstone Acquisition, Inc. and Touchstone Holding, L.P., Class A preferred units    
Coupon, PIK [3]   8.00%
Shares/Units 2,149 2,149
Amortized Cost $ 3.1 [5] $ 3.0 [1]
Fair Value $ 4.4 [5] $ 2.1 [1]
Investment, Identifier [Axis]: Trader Corporation and Project Auto Finco Corp., First lien senior secured loan    
Coupon 11.96% [2] 11.40% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 12.5 [4],[5],[6] $ 12.2 [1],[7],[8]
Amortized Cost 12.1 [4],[5],[6] 12.2 [1],[7],[8]
Fair Value $ 12.5 [4],[5],[6] $ 11.9 [1],[7],[8]
Investment, Identifier [Axis]: Triton Water Holdings, Inc., First lien senior secured loan    
Coupon 8.74% [2] 8.23% [3]
Spread 3.50% [2] 3.50% [3]
Principal $ 1.0 [4],[5],[11] $ 1.0 [1],[7],[12]
Amortized Cost 1.0 [4],[5],[11] 1.0 [1],[7],[12]
Fair Value $ 0.9 [4],[5],[11] $ 0.9 [1],[7],[12]
Investment, Identifier [Axis]: Triton Water Holdings, Inc., Senior subordinated loan    
Coupon 6.25% [2] 625.00% [3]
Principal $ 0.1 [5],[11] $ 0.1 [1],[12]
Amortized Cost 0.1 [5],[11] 0.1 [1],[12]
Fair Value $ 0.1 [5],[11] $ 0.1 [1],[12]
Investment, Identifier [Axis]: Triwizard Holdings, Inc. and Triwizard Parent, LP, Class A-2 common units    
Shares/Units 30,000  
Amortized Cost [5] $ 3.0  
Fair Value [5] $ 3.0  
Investment, Identifier [Axis]: U.S. Anesthesia Partners, Inc. & U.S. Anesthesia Partners Holdings, Inc., Common stock    
Shares/Units 3,671,429 3,671,429
Amortized Cost $ 12.9 [5] $ 12.9 [1]
Fair Value $ 10.3 [5] $ 12.7 [1]
Investment, Identifier [Axis]: U.S. Anesthesia Partners, Inc. & U.S. Anesthesia Partners Holdings, Inc., Second lien senior secured loan    
Coupon 12.67% [2] 11.62% [3]
Spread 7.50% [2] 7.50% [3]
Principal $ 147.8 [4],[5] $ 147.8 [1],[7]
Amortized Cost 147.8 [4],[5] 147.8 [1],[7]
Fair Value 138.9 [4],[5] $ 143.3 [1],[7]
Investment, Identifier [Axis]: UKG Inc. and H&F Unite Partners, L.P., First lien senior secured revolving loan    
Coupon [3]   8.06%
Spread [3]   3.75%
Principal 0.0 [16] $ 10.6 [1],[8],[14]
Amortized Cost 0.0 [16] 10.6 [1],[8],[14]
Fair Value $ 0.0 [16] $ 10.6 [1],[8],[14]
Investment, Identifier [Axis]: UKG Inc. and H&F Unite Partners, L.P., Limited partnership interests    
Shares/Units 12,583,556 [5],[6] 12,583,556
Amortized Cost $ 12.6 [5],[6] $ 12.6 [1],[8]
Fair Value $ 17.8 [5],[6] $ 14.4 [1],[8]
Investment, Identifier [Axis]: US Salt Investors, LLC and Emerald Lake Pearl Acquisition-A, L.P., First lien senior secured loan    
Coupon 10.89% [2] 10.23% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 26.3 [4],[5] $ 26.4 [1],[7]
Amortized Cost 26.3 [4],[5] 26.4 [1],[7]
Fair Value $ 25.5 [4],[5] $ 25.3 [1],[7]
Investment, Identifier [Axis]: US Salt Investors, LLC and Emerald Lake Pearl Acquisition-A, L.P., Limited partner interests    
Shares (as a percent) 0.40% 0.40%
Amortized Cost $ 0.8 [5] $ 0.8 [1]
Fair Value $ 0.6 [5] $ 0.5 [1]
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC and Koln Co-Invest Unblocked, LP, Class A interests    
Shares/Units 4,623  
Amortized Cost $ 4.6  
Fair Value $ 4.5  
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC and Koln Co-Invest Unblocked, LP, First lien senior secured loan    
Coupon [2] 11.99%  
Spread [2] 6.75%  
Principal [4],[5] $ 10.4  
Amortized Cost [4],[5] 10.4  
Fair Value [4],[5] $ 10.1  
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC, First lien senior secured loan    
Coupon [3]   9.38%
Spread [3]   5.00%
Principal [1],[7]   $ 1.0
Amortized Cost [1],[7]   1.0
Fair Value [1],[7]   $ 1.0
Investment, Identifier [Axis]: UserZoom Technologies, Inc., First lien senior secured loan    
Coupon [2] 12.42%  
Spread [2] 7.50%  
Principal [4],[5] $ 5.8  
Amortized Cost [4],[5] 5.7  
Fair Value [4],[5] $ 5.7  
Investment, Identifier [Axis]: VCP-EDC Co-Invest, LLC, Membership units    
Shares/Units 2,970,000 2,970,000
Amortized Cost $ 2.8 $ 2.8
Fair Value $ 7.1 $ 4.2
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., Class A-2 units    
Shares/Units   7,524
Amortized Cost [1]   $ 7.5
Fair Value [1]   $ 8.6
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., Class A-2 units 1    
Shares/Units 7,524  
Amortized Cost [5] $ 7.5  
Fair Value [5] $ 10.0  
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., Class A-2 units 2    
Shares/Units 45  
Amortized Cost [5] $ 0.1  
Fair Value [5] $ 0.1  
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan 1    
Coupon 11.45% [2] 10.60% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 6.2 [4],[5] $ 6.2 [1],[7]
Amortized Cost 6.2 [4],[5] 6.2 [1],[7]
Fair Value $ 6.1 [4],[5] $ 6.0 [1],[7]
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan 2    
Coupon 11.72% [2] 10.52% [3]
Spread 6.50% [2] 6.50% [3]
Principal $ 8.2 [4],[5] $ 3.1 [1],[7]
Amortized Cost 8.2 [4],[5] 3.1 [1],[7]
Fair Value $ 8.2 [4],[5] 3.1 [1],[7]
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured revolving loan    
Coupon [2] 13.50%  
Spread [2] 5.25%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] 0.3  
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC    
Fair Value $ 104.1 $ 116.1
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, Class A units    
Shares/Units 347,900 347,900
Amortized Cost $ 32.8 [5] $ 32.8 [1]
Fair Value $ 61.3 [5] $ 73.4 [1]
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan 1    
Coupon 14.67% [2] 13.62% [3]
Spread 9.50% [2] 9.50% [3]
Principal $ 27.3 [4],[5] $ 27.3 [1]
Amortized Cost 27.3 [4],[5] 27.3 [1]
Fair Value $ 27.3 [4],[5] $ 27.3 [1]
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan 2    
Coupon 14.67% [2] 13.62% [3]
Spread 9.50% [2] 9.50% [3]
Principal $ 6.0 [4],[5] $ 9.4 [1]
Amortized Cost 6.0 [4],[5] 9.4 [1]
Fair Value $ 6.0 [4],[5] $ 9.4 [1]
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan 3    
Coupon 14.67% [2] 13.62% [3]
Spread 9.50% [2] 9.50% [3]
Principal $ 9.5 [4],[5] $ 6.0 [1]
Amortized Cost 9.5 [4],[5] 6.0 [1]
Fair Value $ 9.5 [4],[5] $ 6.0 [1]
Investment, Identifier [Axis]: VRC Companies, LLC, First lien senior secured loan    
Coupon [3]   10.97%
Spread [3]   5.75%
Principal [1],[7]   $ 0.0
Amortized Cost [1],[7]   0.1
Fair Value [1],[7]   $ 0.0
Investment, Identifier [Axis]: VRC Companies, LLC, Senior subordinated loan    
Coupon 12.00% [2] 12.00% [3]
Coupon, PIK 2.00% [2] 2.00% [3]
Principal $ 5.1 [5] $ 5.0 [1]
Amortized Cost 5.1 [5] 5.1 [1]
Fair Value $ 4.8 [5] $ 4.7 [1]
Investment, Identifier [Axis]: VSC Investors LLC, Membership interest    
Shares (as a percent) 1.95% 1.95%
Amortized Cost $ 0.0 [5],[6],[11] $ 0.0 [1],[8],[12]
Fair Value $ 0.0 [5],[6],[11] $ 0.5 [1],[8],[12]
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Class A Units    
Shares/Units   1,400
Amortized Cost [1]   $ 1.4
Fair Value [1]   $ 1.0
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, First lien senior secured loan    
Coupon [3]   7.88%
Spread [3]   3.50%
Principal [1],[7],[12]   $ 14.8
Amortized Cost [1],[7],[12]   14.0
Fair Value [1],[7],[12]   $ 14.2
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan 1    
Coupon [3]   12.63%
Spread [3]   8.25%
Principal [1],[7]   $ 122.7
Amortized Cost [1],[7]   122.7
Fair Value [1],[7]   $ 121.5
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan 2    
Coupon [3]   12.63%
Spread [3]   8.25%
Principal [1],[7]   $ 21.1
Amortized Cost [1],[7]   21.1
Fair Value [1],[7]   $ 20.9
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc., Hercules Achievement, Inc. and BCPE Hercules Holdings, LP, Class A units    
Shares/Units 1,400  
Amortized Cost [5] $ 1.4  
Fair Value [5] $ 1.1  
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc., Hercules Achievement, Inc. and BCPE Hercules Holdings, LP, First lien senior secured loan    
Coupon [2] 10.22%  
Spread [2] 5.00%  
Principal [4],[5],[11] $ 14.7  
Amortized Cost [4],[5],[11] 14.1  
Fair Value [4],[5],[11] $ 14.1  
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc., Hercules Achievement, Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan    
Coupon [2] 15.47%  
Coupon, PIK [2] 2.00%  
Spread [2] 10.25%  
Principal [4],[5] $ 144.9  
Amortized Cost [4],[5] 144.9  
Fair Value [4],[5] $ 143.4  
Investment, Identifier [Axis]: Verista, Inc., First lien senior secured loan    
Coupon 11.38% [2] 10.19% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 0.8 [4],[5] $ 0.8 [1],[7]
Amortized Cost 0.8 [4],[5] 0.8 [1],[7]
Fair Value $ 0.8 [4],[5] $ 0.8 [1],[7]
Investment, Identifier [Axis]: Verista, Inc., First lien senior secured revolving loan    
Coupon 11.19% [2] 10.27% [3]
Spread 6.00% [2] 6.00% [3]
Principal $ 0.5 [4],[5] $ 1.1 [1],[7]
Amortized Cost 0.2 [4],[5] 0.7 [1],[7]
Fair Value $ 0.5 [4],[5] $ 1.1 [1],[7]
Investment, Identifier [Axis]: Vertice Pharma UK Parent Limited, Preferred shares    
Shares/Units 40,662 40,662
Amortized Cost $ 0.0 [6] $ 0.0 [8]
Fair Value $ 0.0 [6] $ 0.0 [8]
Investment, Identifier [Axis]: Viant Medical Holdings, Inc., First lien senior secured loan    
Coupon 8.94% [2] 8.13% [3]
Spread 3.75% [2] 3.75% [3]
Principal $ 7.6 [5],[11] $ 3.2 [1],[12]
Amortized Cost 7.0 [5],[11] 2.9 [1],[12]
Fair Value $ 7.3 [5],[11] $ 2.8 [1],[12]
Investment, Identifier [Axis]: Visual Edge Technology, Inc., First lien senior secured loan    
Coupon 12.48% [2] 11.74% [3]
Coupon, PIK 1.25% [2] 1.25% [3]
Spread 7.00% [2] 7.00% [3]
Principal $ 32.6 [4],[5] $ 32.6 [1],[7]
Amortized Cost 32.6 [4],[5] 32.6 [1],[7]
Fair Value 32.6 [4],[5] 29.3 [1],[7]
Investment, Identifier [Axis]: Visual Edge Technology, Inc., Senior subordinated loan    
Principal 112.4 [5],[9] 103.8 [1],[10]
Amortized Cost 87.5 [5],[9] 87.5 [1],[10]
Fair Value $ 45.5 [5],[9] $ 48.8 [1],[10]
Investment, Identifier [Axis]: Visual Edge Technology, Inc., Warrant to purchase shares of common stock    
Shares/Units 10,358,572 10,358,572
Amortized Cost $ 3.9 [5] $ 3.9
Fair Value $ 0.0 [5] $ 0.0
Investment, Identifier [Axis]: Vobev, LLC and Vobev Holdings, LLC, First lien senior secured loan    
Coupon [2] 12.15%  
Spread [2] 7.00%  
Principal [4],[5] $ 49.6  
Amortized Cost [4],[5] 49.6  
Fair Value [4],[5] $ 48.2  
Investment, Identifier [Axis]: Vobev, LLC and Vobev Holdings, LLC, Warrant to purchase shares of ordinary shares    
Shares/Units 4,378  
Amortized Cost [5] $ 0.0  
Fair Value [5] $ 0.0  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, Common units    
Shares/Units 33,293 33,293
Amortized Cost $ 4.7 $ 4.7
Fair Value $ 4.2 $ 4.4
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 1    
Coupon 11.64% [2] 10.98% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 32.9 [4],[5] $ 33.1 [1],[7]
Amortized Cost 32.9 [4],[5] 33.1 [1],[7]
Fair Value $ 31.9 [4],[5] $ 32.4 [1],[7]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 2    
Coupon 11.64% [2] 10.98% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 4.5 [4],[5] $ 14.5 [1],[7]
Amortized Cost 4.5 [4],[5] 14.5 [1],[7]
Fair Value $ 4.3 [4],[5] $ 14.2 [1],[7]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 3    
Coupon 11.58% [2] 10.98% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 13.8 [4],[5] $ 11.3 [1],[7]
Amortized Cost 13.8 [4],[5] 11.3 [1],[7]
Fair Value $ 13.4 [4],[5] $ 11.0 [1],[7]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 4    
Coupon 11.64% [2] 10.98% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 10.7 [4],[5] $ 10.7 [1],[7]
Amortized Cost 10.7 [4],[5] 10.7 [1],[7]
Fair Value $ 10.3 [4],[5] $ 10.5 [1],[7]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 5    
Coupon 11.64% [2] 10.98% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 0.1 [4],[5] $ 4.5 [1],[7]
Amortized Cost 0.1 [4],[5] 4.5 [1],[7]
Fair Value $ 0.1 [4],[5] $ 4.4 [1],[7]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 6    
Coupon 11.64% [2] 10.98% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 7    
Coupon 11.64% [2] 10.98% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 30.9 [4],[5] $ 0.1 [1],[7]
Amortized Cost 30.9 [4],[5] 0.1 [1],[7]
Fair Value $ 30.0 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured revolving loan    
Coupon 11.64% [2] 10.32% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 15.3 [4],[5],[13] $ 8.6 [1],[7],[14]
Amortized Cost 15.3 [4],[5],[13] 8.6 [1],[7],[14]
Fair Value $ 14.8 [4],[5],[13] $ 8.4 [1],[7],[14]
Investment, Identifier [Axis]: Walnut Parent, Inc., First lien senior secured loan 1    
Coupon 10.70% [2] 10.24% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 14.6 [4],[5] $ 14.7 [1],[7]
Amortized Cost 14.6 [4],[5] 14.7 [1],[7]
Fair Value $ 14.0 [4],[5] $ 14.2 [1],[7]
Investment, Identifier [Axis]: Walnut Parent, Inc., First lien senior secured loan 2    
Coupon 10.70% [2] 10.24% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Wand Newco 3, Inc., Second lien senior secured loan    
Coupon 12.44% [2] 11.63% [3]
Spread 7.25% [2] 7.25% [3]
Principal $ 182.6 [5] $ 182.6 [1]
Amortized Cost 181.1 [5] 180.9 [1]
Fair Value $ 182.6 [5] $ 178.9 [1]
Investment, Identifier [Axis]: Wash Encore Holdings, LLC, First lien senior secured loan    
Coupon [3]   9.12%
Spread [3]   5.75%
Principal [1],[7]   $ 98.5
Amortized Cost [1],[7]   98.5
Fair Value [1],[7]   $ 96.5
Investment, Identifier [Axis]: Wash Encore Holdings, LLC, First lien senior secured loan 1    
Coupon [2] 10.85%  
Spread [2] 5.75%  
Principal [4],[5] $ 97.9  
Amortized Cost [4],[5] 97.9  
Fair Value [4],[5] $ 96.0  
Investment, Identifier [Axis]: Wash Encore Holdings, LLC, First lien senior secured loan 2    
Coupon [2] 11.25%  
Spread [2] 5.75%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC, Class A units    
Coupon, PIK 8.00% [2] 8.00% [3]
Shares/Units 282,200 282,200
Amortized Cost $ 3.4 $ 3.2
Fair Value $ 3.8 $ 3.2
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC, First lien senior secured loan    
Coupon 10.18% [2] 10.23% [3]
Spread 5.00% [2] 5.50% [3]
Principal $ 21.0 [4],[5] $ 20.4 [1],[7]
Amortized Cost 21.0 [4],[5] 20.4 [1],[7]
Fair Value $ 21.0 [4],[5] $ 20.4 [1],[7]
Investment, Identifier [Axis]: Waverly Advisors, LLC and WAAM Topco, LLC, Class A units    
Shares/Units 1,432,867  
Amortized Cost [6] $ 1.7  
Fair Value [6] $ 1.7  
Investment, Identifier [Axis]: Waverly Advisors, LLC and WAAM Topco, LLC, First lien senior secured loan    
Coupon [2] 11.14%  
Spread [2] 5.75%  
Principal [4],[5],[6] $ 0.6  
Amortized Cost [4],[5],[6] 0.6  
Fair Value [4],[5],[6] $ 0.6  
Investment, Identifier [Axis]: Waverly Advisors, LLC, First lien senior secured loan    
Coupon [3]   10.23%
Spread [3]   5.50%
Principal [1],[8]   $ 0.6
Amortized Cost [1],[8]   0.6
Fair Value [1],[8]   $ 0.6
Investment, Identifier [Axis]: WebPT, Inc., First lien senior secured loan    
Coupon 12.11% [2] 11.48% [3]
Spread 6.75% [2] 6.75% [3]
Principal $ 0.1 [4],[5] $ 48.1 [1],[7]
Amortized Cost 0.1 [4],[5] 48.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 48.1 [1],[7]
Investment, Identifier [Axis]: WebPT, Inc., First lien senior secured revolving loan    
Coupon 14.00% [2] 11.26% [3]
Spread 5.75% [2] 6.75% [3]
Principal $ 0.2 [4],[5] $ 0.3 [1],[7]
Amortized Cost 0.2 [4],[5] 0.3 [1],[7]
Fair Value $ 0.2 [4],[5] $ 0.3 [1],[7]
Investment, Identifier [Axis]: Wellness AcquisitionCo, Inc., First lien senior secured loan    
Coupon 10.86% [2] 9.91% [3]
Spread 5.50% [2] 5.50% [3]
Principal $ 0.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 0.1 [4],[5] 0.1 [1],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: Wellpath Holdings, Inc., First lien senior secured loan    
Coupon [2] 10.98%  
Spread [2] 5.50%  
Principal [5],[11] $ 33.4  
Amortized Cost [5],[11] 33.3  
Fair Value [5],[11] $ 24.6  
Investment, Identifier [Axis]: Wellpath Holdings, Inc., First lien senior secured revolving loan    
Coupon [2] 10.66%  
Spread [2] 5.50%  
Principal [5],[13] $ 4.1  
Amortized Cost [5],[13] 4.1  
Fair Value [5],[13] 3.0  
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 1    
Coupon [3]   10.48%
Spread [3]   5.75%
Principal 0.0 [16] $ 18.0 [1],[7]
Amortized Cost 0.0 [16] 18.0 [1],[7]
Fair Value $ 0.0 [16] $ 17.8 [1],[7]
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 2    
Coupon 11.14% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 17.9 [4],[5] $ 0.2 [1],[7]
Amortized Cost 17.9 [4],[5] 0.2 [1],[7]
Fair Value $ 17.9 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 3    
Coupon 11.14% [2] 10.48% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.2 [4],[5] $ 0.2 [1],[7]
Amortized Cost 0.2 [4],[5] 0.2 [1],[7]
Fair Value $ 0.2 [4],[5] $ 0.2 [1],[7]
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 4    
Coupon [2] 11.14%  
Spread [2] 5.75%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured revolving loan    
Coupon [3]   10.09%
Spread [3]   5.75%
Principal [1],[7],[14]   $ 0.8
Amortized Cost [1],[7],[14]   0.8
Fair Value [1],[7],[14]   $ 0.8
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, Limited partnership interests    
Shares/Units 17,655 17,655
Amortized Cost $ 1.8 [5] $ 1.8 [1]
Fair Value $ 5.6 [5] $ 5.1 [1]
Investment, Identifier [Axis]: Winebow Holdings, Inc. and The Vintner Group, Inc., First lien senior secured loan    
Coupon 11.45% [2] 10.63% [3]
Spread 6.25% [2] 6.25% [3]
Principal $ 27.9 [4],[5] $ 28.0 [1],[7]
Amortized Cost 27.9 [4],[5] 28.0 [1],[7]
Fair Value $ 27.0 [4],[5] $ 27.5 [1],[7]
Investment, Identifier [Axis]: WorkWave Intermediate II, LLC, First lien senior secured loan 1    
Coupon, PIK 12.59% [2] 11.93% [3]
Spread 7.25% [2] 7.25% [3]
Principal $ 71.6 [4],[5] $ 67.4 [1],[7]
Amortized Cost 71.6 [4],[5] 67.4 [1],[7]
Fair Value $ 71.6 [4],[5] $ 67.4 [1],[7]
Investment, Identifier [Axis]: WorkWave Intermediate II, LLC, First lien senior secured loan 2    
Coupon [3]   11.44%
Coupon, PIK [2] 12.59%  
Spread 7.25% [2] 7.25% [3]
Principal $ 18.8 [4],[5] $ 17.3 [1],[7]
Amortized Cost 18.8 [4],[5] 17.3 [1],[7]
Fair Value $ 18.8 [4],[5] $ 17.3 [1],[7]
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., Common units    
Shares/Units 1,673,000  
Amortized Cost $ 1.7  
Fair Value $ 1.9  
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., First lien senior secured loan 1    
Coupon [2] 11.23%  
Spread [2] 6.25%  
Principal [4],[5] $ 6.1  
Amortized Cost [4],[5] 6.1  
Fair Value [4],[5] $ 5.9  
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., First lien senior secured loan 2    
Coupon [2] 11.49%  
Spread [2] 6.25%  
Principal [4],[5] $ 1.4  
Amortized Cost [4],[5] 1.4  
Fair Value [4],[5] $ 1.4  
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., First lien senior secured revolving loan 1    
Coupon [2] 11.23%  
Spread [2] 6.25%  
Principal [4],[5],[13] $ 0.2  
Amortized Cost [4],[5],[13] 0.2  
Fair Value [4],[5],[13] $ 0.2  
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., First lien senior secured revolving loan 2    
Coupon [2] 11.34%  
Spread [2] 6.25%  
Principal [4],[5],[13] $ 0.3  
Amortized Cost [4],[5],[13] 0.3  
Fair Value [4],[5],[13] $ 0.3  
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, Class A units    
Shares/Units 180,000 180,000
Amortized Cost $ 1.8 [5] $ 1.8 [1]
Fair Value $ 2.8 [5] $ 4.2 [1]
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, Class B units    
Shares/Units 46,363 46,363
Amortized Cost $ 0.9 [5] $ 0.9 [1]
Fair Value $ 0.7 [5] $ 1.1 [1]
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured loan 1    
Coupon 11.14% [2] 10.13% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 0.1 [4],[5] $ 37.0 [7]
Amortized Cost 0.1 [4],[5] 37.0 [7]
Fair Value $ 0.1 [4],[5] $ 36.6 [7]
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured loan 2    
Coupon 11.14% [2] 10.13% [3]
Spread 5.75% [2] 5.75% [3]
Principal $ 36.7 [4],[5] $ 0.1 [1],[7]
Amortized Cost 36.7 [4],[5] 0.1 [1],[7]
Fair Value $ 35.3 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan    
Coupon [3]   12.25%
Spread [3]   4.75%
Principal [1],[7]   $ 0.2
Amortized Cost [1],[7]   0.2
Fair Value [1],[7]   $ 0.2
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan 1    
Coupon [2] 11.17%  
Spread [2] 5.75%  
Principal [4],[5] $ 3.1  
Amortized Cost [4],[5] 3.1  
Fair Value [4],[5] $ 3.0  
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan 2    
Coupon [2] 13.00%  
Spread [2] 4.75%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan 3    
Coupon [2] 13.00%  
Spread [2] 4.75%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.7  
Fair Value [4],[5] $ 0.6  
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured loan 1    
Coupon 10.34% [2] 9.93% [3]
Spread 5.00% [2] 5.25% [3]
Principal $ 0.1 [4],[5] $ 8.2 [1],[7]
Amortized Cost 0.1 [4],[5] 8.2 [1],[7]
Fair Value $ 0.1 [4],[5] $ 8.2 [1],[7]
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured loan 2    
Coupon 10.59% [2] 9.68% [3]
Spread 5.25% [2] 5.00% [3]
Principal $ 8.1 [4],[5] $ 0.1 [1],[7]
Amortized Cost 8.1 [4],[5] 0.1 [1],[7]
Fair Value $ 8.1 [4],[5] $ 0.1 [1],[7]
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured revolving loan    
Coupon [3]   9.47%
Spread [3]   5.00%
Principal [1],[7]   $ 1.5
Amortized Cost [1],[7]   1.5
Fair Value [1],[7]   $ 1.5
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, First lien senior secured loan    
Coupon [3]   9.48%
Spread [3]   4.75%
Principal [1],[7]   $ 0.1
Amortized Cost [1],[7]   0.1
Fair Value [1],[7]   0.1
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, First lien senior secured revolving loan    
Principal [15]   0.0
Amortized Cost [15]   0.0
Fair Value [15]   $ 0.0
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, Series A units    
Shares/Units   4,699
Amortized Cost   $ 4.7
Fair Value   $ 5.5
Investment, Identifier [Axis]: ZB Holdco LLC and ZB TopCo LLC, First lien senior secured loan    
Coupon [2] 10.14%  
Spread [2] 4.75%  
Principal [4],[5] $ 13.3  
Amortized Cost [4],[5] 13.3  
Fair Value [4],[5] 13.3  
Investment, Identifier [Axis]: ZB Holdco LLC and ZB TopCo LLC, First lien senior secured revolving loan    
Principal [16] 0.0  
Amortized Cost [16] 0.0  
Fair Value [16] $ 0.0  
Investment, Identifier [Axis]: ZB Holdco LLC and ZB TopCo LLC, Series A units    
Shares/Units 4,699  
Amortized Cost $ 4.7  
Fair Value $ 5.7  
Investment, Identifier [Axis]: ZBS Mechanical Group Co-Invest Fund 2, LLC, Membership interest    
Shares/Units 2,771,000  
Amortized Cost $ 1.4  
Fair Value $ 9.8  
Investment, Identifier [Axis]: ZenDesk, Inc., Zoro TopCo, Inc. and Zoro TopCo, LP, Class A common units    
Shares/Units 269,100 269,100
Amortized Cost $ 2.7 [5] $ 2.7 [1]
Fair Value $ 2.8 [5] $ 2.7 [1]
Investment, Identifier [Axis]: ZenDesk, Inc., Zoro TopCo, Inc. and Zoro TopCo, LP, First lien senior secured loan    
Coupon 12.25% [2] 11.04% [3]
Coupon, PIK [2] 7.25%  
Spread 7.00% [2] 6.50% [3]
Principal $ 42.8 [4],[5] $ 42.4 [1],[7]
Amortized Cost 42.8 [4],[5] 42.4 [1],[7]
Fair Value $ 41.9 [4],[5] $ 41.6 [1],[7]
Investment, Identifier [Axis]: ZenDesk, Inc., Zoro TopCo, Inc. and Zoro TopCo, LP, Series A preferred stock    
Coupon, PIK 12.50% [2] 12.50% [3]
Shares/Units 27,226 27,226
Amortized Cost $ 29.3 [5] $ 27.6 [1]
Fair Value $ 27.3 [5] $ 26.8 [1]
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 1    
Coupon 13.01% [2] 11.97% [3]
Spread 7.75% [2] 7.75% [3]
Principal $ 56.0 [4],[5] $ 55.8 [1],[7]
Amortized Cost 56.0 [4],[5] 55.8 [1],[7]
Fair Value $ 56.0 [4],[5] $ 55.2 [1],[7]
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 2    
Coupon 13.01% [2] 11.97% [3]
Spread 7.75% [2] 7.75% [3]
Principal $ 5.4 [4],[5] $ 56.0 [1],[7]
Amortized Cost 5.4 [4],[5] 56.0 [1],[7]
Fair Value $ 5.4 [4],[5] $ 55.4 [1],[7]
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 3    
Coupon 13.01% [2] 11.97% [3]
Spread 7.75% [2] 7.75% [3]
Principal $ 24.3 [4],[5] $ 24.3 [1],[7]
Amortized Cost 24.3 [4],[5] 24.3 [1],[7]
Fair Value $ 24.3 [4],[5] $ 24.1 [1],[7]
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 4    
Coupon 13.01% [2] 11.97% [3]
Spread 7.75% [2] 7.75% [3]
Principal $ 55.8 [4],[5] $ 5.4 [1],[7]
Amortized Cost 55.8 [4],[5] 5.4 [1],[7]
Fair Value $ 55.8 [4],[5] $ 5.3 [1],[7]
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Limited partnership interest    
Shares/Units 3,988,000 3,988,000
Amortized Cost $ 4.5 [5],[6] $ 4.5 [1],[8]
Fair Value $ 5.1 [5],[6] $ 3.7 [1],[8]
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Second lien senior secured loan 1    
Coupon 13.20% [2] 12.07% [3]
Spread 8.00% [2] 8.00% [3]
Principal $ 17.2 [5] $ 30.6 [1],[7]
Amortized Cost 16.9 [5] 29.8 [1],[7]
Fair Value $ 16.3 [5] $ 27.2 [1],[7]
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Second lien senior secured loan 2    
Coupon 13.20% [2] 12.38% [3]
Spread 8.00% [2] 8.00% [3]
Principal $ 30.6 [5] $ 17.2 [1],[7]
Amortized Cost 29.8 [5] 16.9 [1],[7]
Fair Value $ 29.1 [5] $ 15.3 [1],[7]
[1] These assets are pledged as collateral under the Company’s or the Company’s consolidated subsidiaries’ various revolving credit facilities and, as a result, are not directly available to the creditors of the Company to satisfy any obligations of the Company other than the obligations under each of the respective facilities (see Note 5).
[2] Investments without an interest rate are non-income producing.
[3] Investments without an interest rate are non-income producing.
[4] Loan includes interest rate floor feature.
[5] These assets are pledged as collateral under the Company’s or the Company’s consolidated subsidiaries’ various revolving credit facilities and, as a result, are not directly available to the creditors of the Company to satisfy any obligations of the Company other than the obligations under each of the respective facilities (see Note 5).
[6] This portfolio company is not a qualifying asset under Section 55(a) of the Investment Company Act. Under the Investment Company Act, the Company may not acquire any non-qualifying asset unless, at the time such acquisition is made, qualifying assets represent at least 70% of the Company's total assets. Pursuant to Section 55(a) of the Investment Company Act, 24% of the Company's total assets are represented by investments at fair value and other assets that are considered "non-qualifying assets" as of June 30, 2023.
[7] Loan includes interest rate floor feature.
[8] This portfolio company is not a qualifying asset under Section 55(a) of the Investment Company Act. Under the Investment Company Act, the Company may not acquire any non-qualifying asset unless, at the time such acquisition is made, qualifying assets represent at least 70% of the Company's total assets. Pursuant to Section 55(a) of the Investment Company Act, 25% of the Company's total assets are represented by investments at fair value and other assets that are considered "non-qualifying assets" as of December 31, 2022.
[9] Loan was on non-accrual status as of June 30, 2023.
[10] Loan was on non-accrual status as of December 31, 2022.
[11] Other than the investments noted by this footnote, the fair value of the Company’s investments is determined using unobservable inputs that are significant to the overall fair value measurement. See Note 8 to the consolidated financial statements for more information regarding the fair value of the Company’s investments.
[12] Other than the investments noted by this footnote, the fair value of the Company’s investments is determined using unobservable inputs that are significant to the overall fair value measurement. See Note 8 to the consolidated financial statements for more information regarding the fair value of the Company’s investments.
[13] As of June 30, 2023, in addition to the amounts funded by the Company under this first lien senior secured revolving loan, there were also letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
[14] As of December 31, 2022, in addition to the amounts funded by the Company under this first lien senior secured revolving loan, there were also letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
[15] As of December 31, 2022, no amounts were funded by the Company under this first lien senior secured revolving loan; however, there were letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
[16] As of June 30, 2023, no amounts were funded by the Company under this first lien senior secured revolving loan; however, there were letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
[17] The Company sold a participating interest of approximately $34.9 in aggregate principal amount outstanding of the portfolio company’s first lien senior secured revolving loan. As the transaction did not qualify as a “true sale” in accordance with U.S. generally accepted accounting principles (“GAAP”), the Company recorded a corresponding $34.9 secured borrowing, at fair value, included in “secured borrowings” in the accompanying consolidated balance sheet. As of June 30, 2023, the interest rate in effect for the secured borrowing was 12.76%.
[18] The Company sold a participating interest of approximately $79.0 in aggregate principal amount outstanding of the portfolio company’s first lien senior secured revolving loan. As the transaction did not qualify as a “true sale” in accordance with GAAP, the Company recorded a corresponding $79.0 secured borrowing, at fair value, included in “secured borrowings” in the accompanying consolidated balance sheet. As of December 31, 2022, the interest rate in effect for the secured borrowing was 11.62%.
[19] In addition to the interest earned based on the stated interest rate of this security, the Company is entitled to receive an additional interest amount of 2.00% on $40.9 in aggregate principal amount of a “first out” tranche of the portfolio company’s senior term debt previously syndicated by the Company into “first out” and “last out” tranches, whereby the “first out” tranche will have priority as to the “last out” tranche with respect to payments of principal, interest and any other amounts due thereunder.
[20] In addition to the interest earned based on the stated interest rate of this security, the Company is entitled to receive an additional interest amount of 2.00% on $40.9 in aggregate principal amount of a “first out” tranche of the portfolio company’s senior term debt previously syndicated by the Company into “first out” and “last out” tranches, whereby the “first out” tranche will have priority as to the “last out” tranche with respect to payments of principal, interest and any other amounts due thereunder.
[21] In addition to the interest earned based on the stated contractual interest rate of this security, the certificates entitle the holders thereof to receive a portion of the excess cash flow from the SDLP’s loan portfolio, after expenses, which may result in a return to the Company greater than the contractual stated interest rate.
[22] In addition to the interest earned based on the stated contractual interest rate of this security, the certificates entitle the holders thereof to receive a portion of the excess cash flow from the SDLP’s loan portfolio, after expenses, which may result in a return to the Company greater than the contractual stated interest rate.
v3.23.2
CONSOLIDATED SCHEDULE OF INVESTMENTS - (Parenthetical)
€ in Millions, £ in Millions, $ in Millions, $ in Millions, $ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2023
USD ($)
Rate
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
Rate
Jun. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
Rate
Jun. 30, 2023
GBP (£)
Rate
Jun. 30, 2023
EUR (€)
Rate
Jun. 30, 2023
CAD ($)
Rate
Jun. 30, 2023
NZD ($)
Rate
Dec. 31, 2022
GBP (£)
Rate
Dec. 31, 2022
EUR (€)
Rate
Dec. 31, 2022
CAD ($)
Rate
Dec. 31, 2022
NZD ($)
Rate
Derivative Instruments Table [Abstract]                          
Derivative Asset, Counterparty Name [Extensible Enumeration]         Royal Bank of Canada [Member]         Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member]
Total $ (2.0)   $ (2.0)   $ (21.0)                
Schedule of Investments [Line Items]                          
% of Net Assets 207.61%   207.61%   227.97% 207.61% 207.61% 207.61% 207.61% 227.97% 227.97% 227.97% 227.97%
% of Total Assets 97.00%   97.00%   97.00% 97.00% 97.00% 97.00% 97.00% 97.00% 97.00% 97.00% 97.00%
Net unrealized gain (loss) for federal tax purposes $ (200.0)   $ (200.0)   $ (200.0)                
Tax cost basis 21,700.0   21,700.0   22,000.0                
Aggregate gross unrealized loss for federal tax purposes 1,400.0   1,400.0   1,200.0                
Aggregate gross unrealized gain for federal tax purposes 1,200.0   1,200.0   1,000.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 21,496.5   21,496.5   21,779.8                
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total unfunded commitments 41.0   41.0   57.0                
Revolving and delayed draw loan commitments                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2,448.9   2,448.9   2,915.8                
Less: funded commitments (593.5)   (593.5)   (526.2)                
Total unfunded commitments 1,855.4   1,855.4   2,389.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions (14.4)   (14.4)   (13.0)                
Total net adjusted unfunded revolving and delayed draw loan commitments 1,841.0   1,841.0   2,376.6                
Equity investment commitments                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 148.1   148.1   119.8                
Less: funded commitments (64.1)   (64.1)   (69.2)                
Total unfunded commitments 84.0   84.0   50.6                
Less: commitments substantially at discretion of the Company 50.9   50.9   50.6                
Total net adjusted unfunded revolving and delayed draw loan commitments 33.1   33.1   0.0                
Senior Direct Lending Program                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4,799.0   4,799.0   4,958.0                
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Less: funded commitments (5,191.0)   (5,191.0)   (5,127.0)                
Total unfunded commitments 280.0   280.0   294.0                
Ares Capital Corporation | Senior Direct Lending Program                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Less: funded commitments (1,289.0)   (1,289.0)   (1,274.0)                
Total unfunded commitments 65.0   65.0   68.0                
Ares Capital Corporation | Senior Direct Lending Program | Unfunded commitments                          
Schedule of Investments [Line Items]                          
Other commitment         68.0                
Subordinated certificates of the SDLP                          
Investments Activity And Fair Value Table [Abstract]                          
Interest income 43.0 $ 34.0 86.0 $ 67.0                  
Capital structuring service fees 6.0 3.0 7.0 8.0                  
Fair Value $ 1,237.0   $ 1,237.0   $ 1,249.0                
Subordinated certificates of the SDLP | Ares Capital Corporation                          
Schedule of Investments [Line Items]                          
Ownership percentage of outstanding SDLP Certificates 87.50%   87.50%   87.50% 87.50% 87.50% 87.50% 87.50% 87.50% 87.50% 87.50% 87.50%
Subordinated certificates of the SDLP | Ares Capital Corporation | Minimum                          
Schedule of Investments [Line Items]                          
Ownership percentage of outstanding SDLP Certificates 25.00%   25.00%   25.00% 25.00% 25.00% 25.00% 25.00% 25.00% 25.00% 25.00% 25.00%
Non-qualifying assets | Investments, at fair value, and other non-qualifying assets | Customer Concentration Risk                          
Schedule of Investments [Line Items]                          
% of Total Assets, non-qualifying assets     24.00%   25.00%                
Non-controlled affiliate                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     $ 22.4   $ 29.5                
Redemptions (cost)     13.4   52.4                
Sales (cost)     0.0   33.3                
Interest income     8.0   12.5                
Capital structuring service fees     0.0   0.1                
Dividend income $ 6.0 1.0 5.8 1.0 2.0                
Other income     0.0   0.3                
Net realized gains (losses): 0.0 (23.0) 0.0 (23.0) 6.1                
Net unrealized gains (losses): 0.0 33.0 14.4 32.0 71.0                
Fair Value 390.0   390.0   364.4                
Controlled affiliate                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     446.5   1,994.8                
Redemptions (cost)     459.3   513.1                
Sales (cost)     0.0   0.0                
Interest income     123.1   194.5                
Capital structuring service fees 5.0 3.0 5.0 7.0 20.0                
Dividend income 60.0 71.0 124.0 118.0 228.2                
Other income 1.0 1.0 2.0 3.0 6.0                
Net realized gains (losses): 0.0 0.0 0.0 19.0 (37.5)                
Net unrealized gains (losses): 31.0 $ 10.0 (1.0) $ 8.0 1.0                
Fair Value $ 4,234.1   $ 4,234.1   $ 4,119.7                
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Canadian Imperial Bank of Commerce, Company Settlement Date July 28, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration] Foreign currency forward contract   Foreign currency forward contract     Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract        
Derivative Liability, Notional Amount $ 48.0   $ 48.0                    
Derivative Asset, Notional Amount               $ 65          
Derivative Asset, Counterparty Name [Extensible Enumeration] Royal Bank of Canada [Member]   Royal Bank of Canada [Member]     Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member]        
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ (1.0)   $ (1.0)                    
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Royal Bank of Canada, Company Settlement Date January 18, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration]         Foreign currency forward contract         Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract
Derivative Liability, Notional Amount         $ 178.0                
Derivative Asset, Notional Amount                       $ 242  
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset         $ (1.0)                
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Royal Bank of Canada, Company Settlement Date January 27, 2023, Contract One                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration]         Foreign currency forward contract         Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract
Derivative Liability, Notional Amount         $ 195.0                
Derivative Asset, Notional Amount                       $ 264  
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset         $ (1.0)                
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Royal Bank of Canada, Company Settlement Date January 27, 2023, Contract Two                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration]         Foreign currency forward contract         Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract
Derivative Liability, Notional Amount         $ 12.0                
Derivative Asset, Notional Amount                       $ 17  
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset         $ 0.0                
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Royal Bank of Canada, Company Settlement Date July 10, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration] Foreign currency forward contract   Foreign currency forward contract     Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract        
Derivative Liability, Notional Amount $ 28.0   $ 28.0                    
Derivative Asset, Notional Amount               $ 36          
Derivative Asset, Counterparty Name [Extensible Enumeration] Royal Bank of Canada [Member]   Royal Bank of Canada [Member]     Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member]        
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ 0.0   $ 0.0                    
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Royal Bank of Canada, Company Settlement Date July 17, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration] Foreign currency forward contract   Foreign currency forward contract     Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract        
Derivative Liability, Notional Amount $ 31.0   $ 31.0                    
Derivative Asset, Notional Amount               $ 41          
Derivative Asset, Counterparty Name [Extensible Enumeration] Canadian Imperial Bank of Commerce [Member]   Canadian Imperial Bank of Commerce [Member]     Canadian Imperial Bank of Commerce [Member] Canadian Imperial Bank of Commerce [Member] Canadian Imperial Bank of Commerce [Member] Canadian Imperial Bank of Commerce [Member]        
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ 0.0   $ 0.0                    
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Royal Bank of Canada, Company Settlement Date July 19, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration] Foreign currency forward contract   Foreign currency forward contract     Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract        
Derivative Liability, Notional Amount $ 116.0   $ 116.0                    
Derivative Asset, Notional Amount               $ 153          
Derivative Asset, Counterparty Name [Extensible Enumeration] Royal Bank of Canada [Member]   Royal Bank of Canada [Member]     Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member]        
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ 0.0   $ 0.0                    
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Royal Bank of Canada, Company Settlement Date July 28, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration] Foreign currency forward contract   Foreign currency forward contract     Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract        
Derivative Liability, Notional Amount $ 64.0   $ 64.0                    
Derivative Asset, Notional Amount               $ 87          
Derivative Asset, Counterparty Name [Extensible Enumeration] Royal Bank of Canada [Member]   Royal Bank of Canada [Member]     Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member]        
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ (1.0)   $ (1.0)                    
Open Forward Foreign Currency Contract, Identifier [Axis]: EUR, Royal Bank of Canada, Company Settlement Date January 27, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration]         Foreign currency forward contract         Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract
Derivative Liability, Notional Amount         $ 159.0                
Derivative Asset, Notional Amount | €                     € 158    
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset         $ (10.0)                
Open Forward Foreign Currency Contract, Identifier [Axis]: EUR, Royal Bank of Canada, Company Settlement Date July 28, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration] Foreign currency forward contract   Foreign currency forward contract     Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract        
Derivative Liability, Notional Amount $ 146.0   $ 146.0                    
Derivative Asset, Notional Amount | €             € 132            
Derivative Asset, Counterparty Name [Extensible Enumeration] Royal Bank of Canada [Member]   Royal Bank of Canada [Member]     Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member]        
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ 3.0   $ 3.0                    
Open Forward Foreign Currency Contract, Identifier [Axis]: GBP, Royal Bank of Canada, Company Settlement Date January 27, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration]         Foreign currency forward contract         Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract
Derivative Liability, Notional Amount         $ 145.0                
Derivative Asset, Notional Amount | £                   £ 125      
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset         $ (6.0)                
Open Forward Foreign Currency Contract, Identifier [Axis]: GBP, Royal Bank of Canada, Company Settlement Date July 28, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration] Foreign currency forward contract   Foreign currency forward contract     Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract        
Derivative Liability, Notional Amount $ 207.0   $ 207.0                    
Derivative Asset, Notional Amount | £           £ 166              
Derivative Asset, Counterparty Name [Extensible Enumeration] Royal Bank of Canada [Member]   Royal Bank of Canada [Member]     Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member]        
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ (3.0)   $ (3.0)                    
Open Forward Foreign Currency Contract, Identifier [Axis]: NZD, Royal Bank of Canada, Company Settlement Date January 27, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration]         Foreign currency forward contract         Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract
Derivative Liability, Notional Amount         $ 34.0                
Derivative Asset, Notional Amount                         $ 59
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset         $ (3.0)                
Open Forward Foreign Currency Contract, Identifier [Axis]: NZD, Royal Bank of Canada, Company Settlement Date July 28, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration] Foreign currency forward contract   Foreign currency forward contract     Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract        
Derivative Liability, Notional Amount $ 36.0   $ 36.0                    
Derivative Asset, Notional Amount                 $ 59        
Derivative Asset, Counterparty Name [Extensible Enumeration] Royal Bank of Canada [Member]   Royal Bank of Canada [Member]     Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member]        
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ 0.0   $ 0.0                    
Open Forward Foreign Currency Contract, Identifier [Axis]: USD, Royal Bank of Canada, Company Settlement Date July 28, 2023                          
Derivative Instruments Table [Abstract]                          
Derivative Asset, Type [Extensible Enumeration] Foreign currency forward contract   Foreign currency forward contract     Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract Foreign currency forward contract        
Derivative Liability, Notional Amount $ 26.0   $ 26.0                    
Derivative Asset, Notional Amount $ 33.0   $ 33.0                    
Derivative Asset, Counterparty Name [Extensible Enumeration] Royal Bank of Canada [Member]   Royal Bank of Canada [Member]     Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member]        
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ 0.0   $ 0.0                    
Investment, Identifier [Axis]: 2U, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.32% [1]   11.32% [1]   10.16% [2] 11.32% [1] 11.32% [1] 11.32% [1] 11.32% [1] 10.16% [2] 10.16% [2] 10.16% [2] 10.16% [2]
Total first lien senior secured loans $ 4.7 [3],[4],[5]   $ 4.7 [3],[4],[5]   $ 14.6 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.5 [3],[4],[5]   4.5 [3],[4],[5]   14.3 [6],[7],[8]                
Investment, Identifier [Axis]: ACAS Equity Holdings Corporation                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   0.0                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     0.0   0.0                
Fair Value 0.4   0.4   0.4                
Investment, Identifier [Axis]: ACAS Equity Holdings Corporation, Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.4 [5]   0.4 [5]   0.4 [8]                
Investment, Identifier [Axis]: ADF Capital, Inc., ADF Restaurant Group, LLC, and ARG Restaurant Holdings, Inc.                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   0.0                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     0.0   0.0                
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: ADF Capital, Inc., ADF Restaurant Group, LLC, and ARG Restaurant Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 9.2 [4],[9]   9.2 [4],[9]   8.3 [7],[10]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4],[9]   0.0 [4],[9]   0.0 [7],[10]                
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         14.1                
Less: funded commitments         (14.1)                
Total unfunded commitments         0.0                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 0.0                
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.19%         9.19% 9.19% 9.19% 9.19%
Total first lien senior secured loans [6],[7]         $ 9.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 9.3                
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.25%         11.25% 11.25% 11.25% 11.25%
Total first lien senior secured loans [6],[7]         $ 4.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         4.1                
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, Membership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.0                
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [6],[7]         130.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         104.0                
Investment, Identifier [Axis]: ADG, LLC, RC IV GEDC Investor LLC, and GEDC Equity, LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     25.3                    
Redemptions (cost)     0.0                    
Sales (cost)     0.0                    
Interest income     0.0                    
Capital structuring service fees     0.0                    
Dividend income     0.0                    
Other income     0.0                    
Net realized gains (losses):     0.0                    
Net unrealized gains (losses):     0.0                    
Fair Value 74.6   74.6                    
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 34.8   34.8                    
Less: funded commitments (14.8)   (14.8)                    
Total unfunded commitments 20.0   20.0                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 20.0   20.0                    
Investment, Identifier [Axis]: ADG, LLC, RC IV GEDC Investor LLC, and GEDC Equity, LLC, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 29.4   29.4                    
Investment, Identifier [Axis]: ADG, LLC, RC IV GEDC Investor LLC, and GEDC Equity, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [3],[4] 14.8   14.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 14.8   $ 14.8                    
Investment, Identifier [Axis]: ADG, LLC, RC IV GEDC Investor LLC, and GEDC Equity, LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.00%   10.00%     10.00% 10.00% 10.00% 10.00%        
Total first lien senior secured loans [4] $ 30.4   $ 30.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 30.4   30.4                    
Investment, Identifier [Axis]: AHR Funding Holdings, Inc. and AHR Parent Holdings, LP, Class B common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [4]   0.1 [4]   0.1 [7]                
Investment, Identifier [Axis]: AHR Funding Holdings, Inc. and AHR Parent Holdings, LP, Preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 9.9 [4]   9.9 [4]   10.2 [7]                
Investment, Identifier [Axis]: AHR Funding Holdings, Inc. and AHR Parent Holdings, LP, Series A preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 39.4 [4]   $ 39.4 [4]   $ 35.8 [7]                
Investment, Identifier [Axis]: AI Aqua Merger Sub, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.90% [1]   8.90% [1]   7.97% [2] 8.90% [1] 8.90% [1] 8.90% [1] 8.90% [1] 7.97% [2] 7.97% [2] 7.97% [2] 7.97% [2]
Total first lien senior secured loans $ 1.0 [3],[4],[11]   $ 1.0 [3],[4],[11]   $ 1.0 [6],[7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.0 [3],[4],[11]   1.0 [3],[4],[11]   0.9 [6],[7],[12]                
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.0   12.0   28.9                
Less: funded commitments (1.9)   (1.9)   (0.4)                
Total unfunded commitments 10.1   10.1   28.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 10.1   10.1   28.5                
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.5 [4]   $ 6.5 [4]   $ 5.7 [7]                
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.22%         10.22% 10.22% 10.22% 10.22%
Total first lien senior secured loans [6],[7]         $ 26.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 26.8                
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.35%   11.35%     11.35% 11.35% 11.35% 11.35%        
Total first lien senior secured loans [3],[4] $ 7.2   $ 7.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 7.2   $ 7.2                    
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.06%   11.06%     11.06% 11.06% 11.06% 11.06%        
Total first lien senior secured loans [3],[4] $ 9.4   $ 9.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 9.4   $ 9.4                    
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.38%   11.38%     11.38% 11.38% 11.38% 11.38%        
Total first lien senior secured loans [3],[4] $ 6.9   $ 6.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 6.9   $ 6.9                    
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.17%   11.17%     11.17% 11.17% 11.17% 11.17%        
Total first lien senior secured loans [3],[4] $ 7.1   $ 7.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 7.1   $ 7.1                    
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.57%   11.57%     11.57% 11.57% 11.57% 11.57%        
Total first lien senior secured loans [3],[4] $ 3.4   $ 3.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 3.4   $ 3.4                    
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 6                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.12%   11.12%     11.12% 11.12% 11.12% 11.12%        
Total first lien senior secured loans [3],[4] $ 7.0   $ 7.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 7.0   $ 7.0                    
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 7                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.49%   11.49%     11.49% 11.49% 11.49% 11.49%        
Total first lien senior secured loans [3],[4] $ 2.7   $ 2.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 2.7   $ 2.7                    
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.61%         10.61% 10.61% 10.61% 10.61%
Total first lien senior secured loans [6],[7]         $ 0.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.4                
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.21%   11.21%     11.21% 11.21% 11.21% 11.21%        
Total first lien senior secured loans [3],[4] $ 1.5   $ 1.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.5   $ 1.5                    
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.45%   11.45%     11.45% 11.45% 11.45% 11.45%        
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.4   0.4                    
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Second lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 49.4 [3],[4]   49.4 [3],[4]   45.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 49.4 [3],[4]   49.4 [3],[4]   45.6 [6],[7]                
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Second lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 11.1 [3],[4]   11.1 [3],[4]   10.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 11.1 [3],[4]   11.1 [3],[4]   10.3 [6],[7]                
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Second lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 10.8 [3],[4]   10.8 [3],[4]   10.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 10.8 [3],[4]   10.8 [3],[4]   10.0 [6],[7]                
Investment, Identifier [Axis]: AIM Acquisition, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.8   1.8   1.8                
Less: funded commitments (0.5)   (0.5)   0.0                
Total unfunded commitments 1.3   1.3   1.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.3   $ 1.3   1.8                
Investment, Identifier [Axis]: AIM Acquisition, LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.26%   10.26%     10.26% 10.26% 10.26% 10.26%        
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.4   $ 0.4                    
Investment, Identifier [Axis]: AIM Acquisition, LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.36%   10.36%     10.36% 10.36% 10.36% 10.36%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.1   0.1                    
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   0.0                
Redemptions (cost)     0.1   0.1                
Sales (cost)     0.0   0.0                
Interest income     0.7   1.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     2.3   (3.0)                
Fair Value 24.0   24.0   21.8                
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.1   0.1   0.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.1   0.1   0.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.1   0.1   0.1                
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, Class A membership Units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 8.6                
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, Class A membership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 10.7   $ 10.7                    
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.36%         10.36% 10.36% 10.36% 10.36%
Total first lien senior secured loans [6],[7]         $ 13.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         13.2                
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.84%   10.84%     10.84% 10.84% 10.84% 10.84%        
Total first lien senior secured loans [3],[4] $ 12.5   $ 12.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 12.5   $ 12.5                    
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.30%   10.30%     10.30% 10.30% 10.30% 10.30%        
Total first lien senior secured loans [3],[4] $ 0.5   $ 0.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.5   $ 0.5                    
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.68%   10.68%     10.68% 10.68% 10.68% 10.68%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.3   0.3                    
Investment, Identifier [Axis]: API Commercial Inc., API Military Inc., and API Space Intermediate, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 7.0 [4],[9]   7.0 [4],[9]   7.3 [7],[10]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.5 [4],[9]   3.5 [4],[9]   3.6 [7],[10]                
Investment, Identifier [Axis]: AQ Sage Buyer, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 6.4   6.4   6.4                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 6.4   6.4   6.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 6.4   $ 6.4   $ 6.4                
Investment, Identifier [Axis]: AQ Sage Buyer, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.16% [1]   11.16% [1]   10.70% [2] 11.16% [1] 11.16% [1] 11.16% [1] 11.16% [1] 10.70% [2] 10.70% [2] 10.70% [2] 10.70% [2]
Total first lien senior secured loans $ 1.8 [3],[4],[5]   $ 1.8 [3],[4],[5]   $ 1.9 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.8 [3],[4],[5]   1.8 [3],[4],[5]   1.8 [6],[7],[8]                
Investment, Identifier [Axis]: AQ Sunshine, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.4   12.4   12.4                
Less: funded commitments (3.3)   (3.3)   (1.4)                
Total unfunded commitments 9.1   9.1   11.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 9.1   $ 9.1   $ 11.0                
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.42% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.42% [2] 10.42% [2] 10.42% [2] 10.42% [2]
Total first lien senior secured loans $ 8.5 [3],[4]   $ 8.5 [3],[4]   $ 8.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 7.9 [3],[4]   $ 7.9 [3],[4]   $ 8.8 [6],[7]                
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.42% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.42% [2] 10.42% [2] 10.42% [2] 10.42% [2]
Total first lien senior secured loans $ 5.5 [3],[4]   $ 5.5 [3],[4]   $ 8.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.2 [3],[4]   $ 5.2 [3],[4]   $ 8.3 [6],[7]                
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.42% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.42% [2] 10.42% [2] 10.42% [2] 10.42% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 5.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 5.5 [6],[7]                
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.98% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 8.9 [3],[4]   $ 8.9 [3],[4]   $ 1.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 8.4 [3],[4]   $ 8.4 [3],[4]   $ 1.0 [6],[7]                
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.42% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.42% [2] 10.42% [2] 10.42% [2] 10.42% [2]
Total first lien senior secured loans $ 1.0 [3],[4]   $ 1.0 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.9 [3],[4]   $ 0.9 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.65% [1]   11.65% [1]   10.42% [2] 11.65% [1] 11.65% [1] 11.65% [1] 11.65% [1] 10.42% [2] 10.42% [2] 10.42% [2] 10.42% [2]
Total first lien senior secured loans $ 3.2 [3],[4],[13]   $ 3.2 [3],[4],[13]   $ 1.4 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.0 [3],[4],[13]   3.0 [3],[4],[13]   1.4 [6],[7],[14]                
Investment, Identifier [Axis]: ARES 2007-3R, Subordinated notes                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [5]   0.1 [5]   0.1 [8]                
Investment, Identifier [Axis]: ASP-r-pac Acquisition CO LLC and ASP-r-pac Holdings LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 6.2   6.2   6.2                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 6.2   6.2   6.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 6.2   6.2   6.2                
Investment, Identifier [Axis]: ASP-r-pac Acquisition CO LLC and ASP-r-pac Holdings LP, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 13.6 [4]   $ 13.6 [4]   $ 19.2 [7]                
Investment, Identifier [Axis]: ASP-r-pac Acquisition CO LLC and ASP-r-pac Holdings LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.31% [1]   11.31% [1]   10.38% [2] 11.31% [1] 11.31% [1] 11.31% [1] 11.31% [1] 10.38% [2] 10.38% [2] 10.38% [2] 10.38% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: ATI Restoration, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 34.3   34.3   83.7                
Less: funded commitments (3.4)   (3.4)   (5.8)                
Total unfunded commitments 30.9   30.9   77.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 30.9   $ 30.9   $ 77.9                
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.22% [1]   10.22% [1]   9.36% [2] 10.22% [1] 10.22% [1] 10.22% [1] 10.22% [1] 9.36% [2] 9.36% [2] 9.36% [2] 9.36% [2]
Total first lien senior secured loans $ 32.8 [3],[4]   $ 32.8 [3],[4]   $ 33.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 32.8 [3],[4]   $ 32.8 [3],[4]   $ 33.0 [6],[7]                
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.39% [1]   10.39% [1]   9.65% [2] 10.39% [1] 10.39% [1] 10.39% [1] 10.39% [1] 9.65% [2] 9.65% [2] 9.65% [2] 9.65% [2]
Total first lien senior secured loans $ 34.8 [3],[4]   $ 34.8 [3],[4]   $ 8.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 34.8 [3],[4]   $ 34.8 [3],[4]   $ 8.2 [6],[7]                
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.40%   10.40%     10.40% 10.40% 10.40% 10.40%        
Total first lien senior secured loans [3],[4] $ 22.6   $ 22.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 22.6   $ 22.6                    
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.19%   10.19%     10.19% 10.19% 10.19% 10.19%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.1   $ 0.1                    
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.25% [1]   12.25% [1]   11.50% [2] 12.25% [1] 12.25% [1] 12.25% [1] 12.25% [1] 11.50% [2] 11.50% [2] 11.50% [2] 11.50% [2]
Total first lien senior secured loans $ 2.2 [3],[4],[13]   $ 2.2 [3],[4],[13]   $ 4.7 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.2 [3],[4],[13]   2.2 [3],[4],[13]   4.7 [6],[7],[14]                
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     7.5   2.0                
Redemptions (cost)     4.0   3.0                
Sales (cost)     0.0   0.0                
Interest income     4.1   6.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.2   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     (1.4)   4.6                
Fair Value 73.8   73.8   70.2                
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.2   7.2   7.1                
Less: funded commitments (6.8)   (6.8)   (3.2)                
Total unfunded commitments 0.4   0.4   3.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.4   0.4   3.9                
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 13.6 [4]   $ 13.6 [4]   $ 14.9 [7]                
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon 14.50% [1]   14.50% [1]   13.73% [2] 14.50% [1] 14.50% [1] 14.50% [1] 14.50% [1] 13.73% [2] 13.73% [2] 13.73% [2] 13.73% [2]
Total first lien senior secured loans $ 53.4 [3],[4]   $ 53.4 [3],[4]   $ 52.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 53.4 [3],[4]   $ 53.4 [3],[4]   $ 52.1 [6],[7]                
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon 14.50% [1]   14.50% [1]   15.50% [2] 14.50% [1] 14.50% [1] 14.50% [1] 14.50% [1] 15.50% [2] 15.50% [2] 15.50% [2] 15.50% [2]
Total first lien senior secured loans $ 6.3 [3],[4]   $ 6.3 [3],[4]   $ 2.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.3 [3],[4]   $ 6.3 [3],[4]   $ 2.2 [6],[7]                
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon 16.25% [1]   16.25% [1]   13.77% [2] 16.25% [1] 16.25% [1] 16.25% [1] 16.25% [1] 13.77% [2] 13.77% [2] 13.77% [2] 13.77% [2]
Total first lien senior secured loans $ 0.5 [3],[4]   $ 0.5 [3],[4]   $ 1.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.5 [3],[4]   0.5 [3],[4]   1.0 [6],[7]                
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         0.1                
Less: funded commitments         0.0                
Total unfunded commitments         0.1                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         0.1                
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., A ordinary shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[8]         $ 6.5                
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         14.54%         14.54% 14.54% 14.54% 14.54%
Total first lien senior secured loans [6],[7],[8]         $ 61.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[8]         59.8                
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., Ordinary A Shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[5] 5.4   5.4                    
Investment, Identifier [Axis]: Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.1   4.1   4.1                
Less: funded commitments (4.1)   (4.1)   (4.1)                
Total unfunded commitments 0.0   0.0   0.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.0   0.0   0.0                
Investment, Identifier [Axis]: Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 7.4   $ 7.4   $ 6.6                
Investment, Identifier [Axis]: Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.14% [1]   12.14% [1]   12.48% [2] 12.14% [1] 12.14% [1] 12.14% [1] 12.14% [1] 12.48% [2] 12.48% [2] 12.48% [2] 12.48% [2]
Total first lien senior secured loans $ 4.1 [3],[4]   $ 4.1 [3],[4]   $ 4.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.1 [3],[4]   $ 4.1 [3],[4]   $ 4.1 [6],[7]                
Investment, Identifier [Axis]: Acrisure, LLC and Acrisure Finance, Inc., Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         700.00%         700.00% 700.00% 700.00% 700.00%
Total first lien senior secured loans [7],[12]         $ 0.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[12]         0.5                
Investment, Identifier [Axis]: Acrisure, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.82%   10.82%     10.82% 10.82% 10.82% 10.82%        
Total first lien senior secured loans [3],[4],[11] $ 0.2   $ 0.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[11] $ 0.2   $ 0.2                    
Investment, Identifier [Axis]: Acrisure, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 8.69%   8.69%     8.69% 8.69% 8.69% 8.69%        
Total first lien senior secured loans [4],[11] $ 0.8   $ 0.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[11] 0.8   0.8                    
Investment, Identifier [Axis]: Advarra Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.4   0.4   0.4                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.4   0.4   0.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.4   $ 0.4   $ 0.4                
Investment, Identifier [Axis]: Advarra Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.85% [1]   10.85% [1]   10.15% [2] 10.85% [1] 10.85% [1] 10.85% [1] 10.85% [1] 10.15% [2] 10.15% [2] 10.15% [2] 10.15% [2]
Total first lien senior secured loans $ 4.1 [3],[4]   $ 4.1 [3],[4]   $ 4.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.9 [3],[4]   $ 3.9 [3],[4]   $ 3.9 [6],[7]                
Investment, Identifier [Axis]: Aero Operating LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.04% [1]   14.04% [1]   13.24% [2] 14.04% [1] 14.04% [1] 14.04% [1] 14.04% [1] 13.24% [2] 13.24% [2] 13.24% [2] 13.24% [2]
Total first lien senior secured loans $ 36.0 [3],[4]   $ 36.0 [3],[4]   $ 36.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 31.3 [3],[4]   $ 31.3 [3],[4]   $ 35.1 [6],[7]                
Investment, Identifier [Axis]: Aero Operating LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.04% [1]   14.04% [1]   13.24% [2] 14.04% [1] 14.04% [1] 14.04% [1] 14.04% [1] 13.24% [2] 13.24% [2] 13.24% [2] 13.24% [2]
Total first lien senior secured loans $ 1.1 [3],[4]   $ 1.1 [3],[4]   $ 1.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.0 [3],[4]   1.0 [3],[4]   1.1 [6],[7]                
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 45.6   45.6   45.6                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 45.6   45.6   45.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 45.6   $ 45.6   $ 45.6                
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.20% [1]   10.20% [1]   10.64% [2] 10.20% [1] 10.20% [1] 10.20% [1] 10.20% [1] 10.64% [2] 10.64% [2] 10.64% [2] 10.64% [2]
Total first lien senior secured loans $ 63.0 [3],[4]   $ 63.0 [3],[4]   $ 120.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 61.8 [3],[4]   $ 61.8 [3],[4]   $ 115.7 [6],[7]                
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.39% [1]   10.39% [1]   10.45% [2] 10.39% [1] 10.39% [1] 10.39% [1] 10.39% [1] 10.45% [2] 10.45% [2] 10.45% [2] 10.45% [2]
Total first lien senior secured loans $ 120.0 [3],[4]   $ 120.0 [3],[4]   $ 63.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 117.6 [3],[4]   117.6 [3],[4]   60.8 [6],[7]                
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 61.0 [3],[4]   61.0 [3],[4]   56.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 59.8 [3],[4]   $ 59.8 [3],[4]   $ 54.4 [6],[7]                
Investment, Identifier [Axis]: Aimbridge Acquisition Co., Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.67% [1]   12.67% [1]   11.62% [2] 12.67% [1] 12.67% [1] 12.67% [1] 12.67% [1] 11.62% [2] 11.62% [2] 11.62% [2] 11.62% [2]
Total first lien senior secured loans $ 22.5 [4]   $ 22.5 [4]   $ 22.5 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 21.8 [4]   21.8 [4]   21.8 [7]                
Investment, Identifier [Axis]: Alcami Corporation and ACM Note Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.6   2.6   6.6                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.6   2.6   6.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.6   $ 2.6   $ 6.6                
Investment, Identifier [Axis]: Alcami Corporation and ACM Note Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.20% [1]   12.20% [1]   11.42% [2] 12.20% [1] 12.20% [1] 12.20% [1] 12.20% [1] 11.42% [2] 11.42% [2] 11.42% [2] 11.42% [2]
Total first lien senior secured loans $ 9.4 [3],[4]   $ 9.4 [3],[4]   $ 9.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 9.4 [3],[4]   9.4 [3],[4]   9.0 [6],[7]                
Investment, Identifier [Axis]: Alcami Corporation and ACM Note Holdings, LLC, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 20.3 [4]   20.3 [4]   19.5 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 20.3 [4]   $ 20.3 [4]   $ 19.5 [7]                
Investment, Identifier [Axis]: Alera Group, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.20% [1]   11.20% [1]   10.42% [2] 11.20% [1] 11.20% [1] 11.20% [1] 11.20% [1] 10.42% [2] 10.42% [2] 10.42% [2] 10.42% [2]
Total first lien senior secured loans $ 60.3 [3],[4]   $ 60.3 [3],[4]   $ 60.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 59.7 [3],[4]   59.7 [3],[4]   58.8 [6],[7]                
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.4   4.4   4.5                
Less: funded commitments (1.4)   (1.4)   (0.9)                
Total unfunded commitments 3.0   3.0   3.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.0   $ 3.0   $ 3.6                
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.25% [1]   11.25% [1]   7.14% [2] 11.25% [1] 11.25% [1] 11.25% [1] 11.25% [1] 7.14% [2] 7.14% [2] 7.14% [2] 7.14% [2]
Total first lien senior secured loans $ 0.8 [4]   $ 0.8 [4]   $ 0.6 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.8 [4]   $ 0.8 [4]   $ 0.6 [7]                
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.25% [1]   11.25% [1]   9.25% [2] 11.25% [1] 11.25% [1] 11.25% [1] 11.25% [1] 9.25% [2] 9.25% [2] 9.25% [2] 9.25% [2]
Total first lien senior secured loans $ 0.6 [4]   $ 0.6 [4]   $ 0.3 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.6 [4]   $ 0.6 [4]   $ 0.3 [7]                
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.00% [1]   14.00% [1]   13.23% [2] 14.00% [1] 14.00% [1] 14.00% [1] 14.00% [1] 13.23% [2] 13.23% [2] 13.23% [2] 13.23% [2]
Total first lien senior secured loans $ 56.4 [3],[4]   $ 56.4 [3],[4]   $ 56.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 56.4 [3],[4]   56.4 [3],[4]   56.4 [6],[7]                
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, Series A preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 6.7 [4]   6.7 [4]   6.5 [7]                
Investment, Identifier [Axis]: American Seafoods Group LLC and American Seafoods Partners LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [4]   0.2 [4]   0.3 [7]                
Investment, Identifier [Axis]: American Seafoods Group LLC and American Seafoods Partners LLC, Warrant to purchase Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 28.0                
Investment, Identifier [Axis]: American Seafoods Group LLC and American Seafoods Partners LLC, Warrant to purchase units of Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 23.1   $ 23.1                    
Investment, Identifier [Axis]: Amryt Pharmaceuticals, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.46%         10.46% 10.46% 10.46% 10.46%
Total first lien senior secured loans [6],[7],[8]         $ 12.7                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[8]         $ 12.7                
Investment, Identifier [Axis]: Amynta Agency Borrower Inc. and Amynta Warranty Borrower Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.18%   10.18%     10.18% 10.18% 10.18% 10.18%        
Total first lien senior secured loans [4],[11] $ 1.0   $ 1.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[11] 1.0   1.0                    
Investment, Identifier [Axis]: Amynta Agency Borrower Inc. and Amynta Warranty Borrower Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.58%         9.58% 9.58% 9.58% 9.58%
Total first lien senior secured loans [7]         $ 14.6                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 14.0                
Investment, Identifier [Axis]: Amynta Agency Borrower Inc. and Amynta Warranty Borrower Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         8.88%         8.88% 8.88% 8.88% 8.88%
Total first lien senior secured loans [7]         $ 2.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         2.2                
Investment, Identifier [Axis]: Anaplan, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.4   1.4   1.4                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 1.4   1.4   1.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.4   $ 1.4   $ 1.4                
Investment, Identifier [Axis]: Anaplan, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.60% [1]   11.60% [1]   10.82% [2] 11.60% [1] 11.60% [1] 11.60% [1] 11.60% [1] 10.82% [2] 10.82% [2] 10.82% [2] 10.82% [2]
Total first lien senior secured loans $ 1.8 [3],[4]   $ 1.8 [3],[4]   $ 1.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.8 [3],[4]   1.8 [3],[4]   1.7 [6],[7]                
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.1   0.1   3.4                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.1   0.1   3.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.1   $ 0.1   $ 3.4                
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.86% [1]   8.86% [1]   7.52% [2] 8.86% [1] 8.86% [1] 8.86% [1] 8.86% [1] 7.52% [2] 7.52% [2] 7.52% [2] 7.52% [2]
Total first lien senior secured loans $ 4.1 [4]   $ 4.1 [4]   $ 4.4 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.1 [4]   $ 4.1 [4]   $ 4.4 [7]                
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.10% [1]   9.10% [1]   9.11% [2] 9.10% [1] 9.10% [1] 9.10% [1] 9.10% [1] 9.11% [2] 9.11% [2] 9.11% [2] 9.11% [2]
Total first lien senior secured loans $ 0.3 [4]   $ 0.3 [4]   $ 1.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.3 [4]   $ 0.3 [4]   1.0 [6],[7]                
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.60%   10.60%     10.60% 10.60% 10.60% 10.60%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.1   $ 0.1                    
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.22%   10.22%     10.22% 10.22% 10.22% 10.22%        
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.7   $ 0.7                    
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.38%   10.38%     10.38% 10.38% 10.38% 10.38%        
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.2   $ 0.2                    
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 6                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.79%   10.79%     10.79% 10.79% 10.79% 10.79%        
Total first lien senior secured loans [3],[4] $ 1.4   $ 1.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 1.4   1.4                    
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, Limited partnership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 9.0 [4],[5]   9.0 [4],[5]   8.3 [7],[8]                
Investment, Identifier [Axis]: Apex Clean Energy TopCo, LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     18.1   18.1                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     0.0   53.4                
Fair Value 168.8   168.8   150.6                
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 18.1   18.1                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 18.1   18.1                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 18.1   18.1                    
Investment, Identifier [Axis]: Apex Clean Energy TopCo, LLC, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 168.8   168.8   150.6                
Investment, Identifier [Axis]: Apex Service Partners, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.4   3.4                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 3.4   3.4                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.4   $ 3.4                    
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.70%   10.70%     10.70% 10.70% 10.70% 10.70%        
Total first lien senior secured loans [3],[4] $ 20.1   $ 20.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 18.9   $ 18.9                    
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.39%   10.39%     10.39% 10.39% 10.39% 10.39%        
Total first lien senior secured loans [3],[4] $ 8.5   $ 8.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 8.0   $ 8.0                    
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.63%   10.63%     10.63% 10.63% 10.63% 10.63%        
Total first lien senior secured loans [3],[4] $ 4.5   $ 4.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 4.2   $ 4.2                    
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.54%   10.54%     10.54% 10.54% 10.54% 10.54%        
Total first lien senior secured loans [3],[4] $ 16.8   $ 16.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 15.8   $ 15.8                    
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.76%   10.76%     10.76% 10.76% 10.76% 10.76%        
Total first lien senior secured loans [3],[4] $ 0.6   $ 0.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.5   $ 0.5                    
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 6                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.73%   10.73%     10.73% 10.73% 10.73% 10.73%        
Total first lien senior secured loans [3],[4] $ 7.1   $ 7.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 6.7   6.7                    
Investment, Identifier [Axis]: Applied Technical Services, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.7   3.7   3.8                
Less: funded commitments (3.1)   (3.1)   (1.1)                
Total unfunded commitments 0.6   0.6   2.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.6   $ 0.6   $ 2.7                
Investment, Identifier [Axis]: Applied Technical Services, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.48% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 1.0 [3],[4]   $ 1.0 [3],[4]   $ 0.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.0 [3],[4]   $ 1.0 [3],[4]   $ 0.8 [6],[7]                
Investment, Identifier [Axis]: Applied Technical Services, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.00% [1]   13.00% [1]   12.25% [2] 13.00% [1] 13.00% [1] 13.00% [1] 13.00% [1] 12.25% [2] 12.25% [2] 12.25% [2] 12.25% [2]
Total first lien senior secured loans $ 3.1 [3],[4]   $ 3.1 [3],[4]   $ 1.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.1 [3],[4]   3.1 [3],[4]   1.1 [6],[7]                
Investment, Identifier [Axis]: Appriss Health, LLC and Appriss Health Intermediate Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.1   0.1   0.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.1   0.1   0.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.1   $ 0.1   $ 0.1                
Investment, Identifier [Axis]: Appriss Health, LLC and Appriss Health Intermediate Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.90% [1]   11.90% [1]   11.54% [2] 11.90% [1] 11.90% [1] 11.90% [1] 11.90% [1] 11.54% [2] 11.54% [2] 11.54% [2] 11.54% [2]
Total first lien senior secured loans $ 5.6 [3],[4]   $ 5.6 [3],[4]   $ 5.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 5.6 [3],[4]   5.6 [3],[4]   5.7 [6],[7]                
Investment, Identifier [Axis]: Appriss Health, LLC and Appriss Health Intermediate Holdings, Inc., Series A preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 37.2 [4]   37.2 [4]   35.6 [7]                
Investment, Identifier [Axis]: Apptio, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.2   4.2   4.2                
Less: funded commitments (1.3)   (1.3)   (2.5)                
Total unfunded commitments 2.9   2.9   1.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.9   $ 2.9   $ 1.7                
Investment, Identifier [Axis]: Apptio, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.20% [1]   10.20% [1]   9.94% [2] 10.20% [1] 10.20% [1] 10.20% [1] 10.20% [1] 9.94% [2] 9.94% [2] 9.94% [2] 9.94% [2]
Total first lien senior secured loans $ 17.1 [3],[4]   $ 17.1 [3],[4]   $ 15.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 17.1 [3],[4]   $ 17.1 [3],[4]   $ 15.1 [6],[7]                
Investment, Identifier [Axis]: Apptio, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.20% [1]   10.20% [1]   9.93% [2] 10.20% [1] 10.20% [1] 10.20% [1] 10.20% [1] 9.93% [2] 9.93% [2] 9.93% [2] 9.93% [2]
Total first lien senior secured loans $ 1.3 [3],[4]   $ 1.3 [3],[4]   $ 2.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.3 [3],[4]   $ 1.3 [3],[4]   $ 2.5 [6],[7]                
Investment, Identifier [Axis]: Aptean, Inc. and Aptean Acquiror Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 9.45%   9.45%     9.45% 9.45% 9.45% 9.45%        
Total first lien senior secured loans [4],[11] $ 7.1   $ 7.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[11] 7.0   7.0                    
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 15.6   15.6                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 15.6   15.6                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 15.6   $ 15.6                    
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.54% [1]   12.54% [1]   8.81% [2] 12.54% [1] 12.54% [1] 12.54% [1] 12.54% [1] 8.81% [2] 8.81% [2] 8.81% [2] 8.81% [2]
Total first lien senior secured loans $ 78.9 [3],[4],[5]   $ 78.9 [3],[4],[5]   $ 90.0 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 78.9 [3],[4],[5]   $ 78.9 [3],[4],[5]   $ 89.1 [6],[7],[8]                
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.07% [1]   10.07% [1]   8.19% [2] 10.07% [1] 10.07% [1] 10.07% [1] 10.07% [1] 8.19% [2] 8.19% [2] 8.19% [2] 8.19% [2]
Total first lien senior secured loans $ 7.1 [3],[4],[5]   $ 7.1 [3],[4],[5]   $ 66.8 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 7.1 [3],[4],[5]   $ 7.1 [3],[4],[5]   $ 66.8 [6],[7],[8]                
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.25% [1]   11.25% [1]   8.19% [2] 11.25% [1] 11.25% [1] 11.25% [1] 11.25% [1] 8.19% [2] 8.19% [2] 8.19% [2] 8.19% [2]
Total first lien senior secured loans $ 90.0 [3],[4],[5]   $ 90.0 [3],[4],[5]   $ 75.0 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 89.1 [3],[4],[5]   $ 89.1 [3],[4],[5]   $ 75.0 [6],[7],[8]                
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.57% [1]   9.57% [1]   8.00% [2] 9.57% [1] 9.57% [1] 9.57% [1] 9.57% [1] 8.00% [2] 8.00% [2] 8.00% [2] 8.00% [2]
Total first lien senior secured loans $ 68.1 [3],[4],[5]   $ 68.1 [3],[4],[5]   $ 7.0 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 68.1 [3],[4],[5]   $ 68.1 [3],[4],[5]   7.0 [6],[7],[8]                
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.22%   12.22%     12.22% 12.22% 12.22% 12.22%        
Total first lien senior secured loans [3],[4],[5] $ 15.6   $ 15.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 15.6   15.6                    
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 1.4 [4],[5],[11]   1.4 [4],[5],[11]   1.4 [7],[8],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.3 [4],[5],[11]   1.3 [4],[5],[11]   1.4 [7],[8],[12]                
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.4   2.4   2.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.4   2.4   2.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.4   $ 2.4   $ 2.5                
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.45% [1]   12.45% [1]   11.49% [2] 12.45% [1] 12.45% [1] 12.45% [1] 12.45% [1] 11.49% [2] 11.49% [2] 11.49% [2] 11.49% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 20.9 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 20.7 [6],[7],[8]                
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.49% [1]   12.49% [1]   11.53% [2] 12.49% [1] 12.49% [1] 12.49% [1] 12.49% [1] 11.53% [2] 11.53% [2] 11.53% [2] 11.53% [2]
Total first lien senior secured loans $ 1.2 [3],[4],[5]   $ 1.2 [3],[4],[5]   $ 5.9 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.5 [3],[4],[5]   $ 1.5 [3],[4],[5]   5.8 [6],[7],[8]                
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.45%   12.45%     12.45% 12.45% 12.45% 12.45%        
Total first lien senior secured loans [3],[4],[5] $ 4.9   $ 4.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 4.9   4.9                    
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.7 [4]   $ 2.7 [4]   $ 6.4 [7]                
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.77% [1]   9.77% [1]   8.68% [2] 9.77% [1] 9.77% [1] 9.77% [1] 9.77% [1] 8.68% [2] 8.68% [2] 8.68% [2] 8.68% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 9.0   9.0   9.0                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 9.0   9.0   9.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 9.0   9.0   9.0                
Investment, Identifier [Axis]: AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP 1                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.2   1.2                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 1.2   1.2                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 1.2   1.2                    
Investment, Identifier [Axis]: AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 12.0 [4]   12.0 [4]   9.5 [7]                
Investment, Identifier [Axis]: AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP, Series A preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 213.9 [4]   213.9 [4]   198.5 [7]                
Investment, Identifier [Axis]: Athyrium Buffalo LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.9   7.9   15.5                
Less: funded commitments 0.0   0.0   (7.6)                
Total unfunded commitments 7.9   7.9   7.9                
Less: commitments substantially at discretion of the Company 7.9   7.9   7.9                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.0   0.0   0.0                
Investment, Identifier [Axis]: Athyrium Buffalo LP, Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 7.5 [4],[5]   7.5 [4],[5]   7.5 [7],[8]                
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.8   0.8   0.8                
Less: funded commitments (0.5)   (0.5)   (0.2)                
Total unfunded commitments 0.3   0.3   0.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.3   $ 0.3   $ 0.6                
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.11% [1]   11.11% [1]   10.48% [2] 11.11% [1] 11.11% [1] 11.11% [1] 11.11% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.11% [1]   11.11% [1]   10.48% [2] 11.11% [1] 11.11% [1] 11.11% [1] 11.11% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.11% [1]   11.11% [1]   10.48% [2] 11.11% [1] 11.11% [1] 11.11% [1] 11.11% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.11% [1]   11.11% [1]   10.48% [2] 11.11% [1] 11.11% [1] 11.11% [1] 11.11% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.2 [6],[7]                
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.94% [1]   10.94% [1]   10.10% [2] 10.94% [1] 10.94% [1] 10.94% [1] 10.94% [1] 10.10% [2] 10.10% [2] 10.10% [2] 10.10% [2]
Total first lien senior secured loans $ 0.5 [3],[4]   $ 0.5 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.5 [3],[4]   $ 0.5 [3],[4]   0.2 [6],[7]                
Investment, Identifier [Axis]: Auctane, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.94%   10.94%     10.94% 10.94% 10.94% 10.94%        
Total first lien senior secured loans [3],[4] $ 146.0   $ 146.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 140.2   140.2                    
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [4]   $ 0.0 [4]   $ 0.0                
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.93% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.93% [2] 10.93% [2] 10.93% [2] 10.93% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 5.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 5.3 [6],[7]                
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   9.73% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 9.73% [2] 9.73% [2] 9.73% [2] 9.73% [2]
Total first lien senior secured loans $ 5.2 [3],[4]   $ 5.2 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 5.1 [3],[4]   5.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, Preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         5.2                
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, Preferred units 1                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 3.0   3.0                    
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, Preferred units 2                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 0.8   0.8                    
Investment, Identifier [Axis]: Avalara, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.7   2.7   2.7                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.7   2.7   2.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.7   $ 2.7   $ 2.7                
Investment, Identifier [Axis]: Avalara, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.49% [1]   12.49% [1]   11.83% [2] 12.49% [1] 12.49% [1] 12.49% [1] 12.49% [1] 11.83% [2] 11.83% [2] 11.83% [2] 11.83% [2]
Total first lien senior secured loans $ 72.3 [3],[4]   $ 72.3 [3],[4]   $ 72.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 72.3 [3],[4]   $ 72.3 [3],[4]   70.4 [6],[7]                
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         0.2                
Less: funded commitments         0.0                
Total unfunded commitments         0.2                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 0.2                
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon 11.34% [1]   11.34% [1]   10.38% [2] 11.34% [1] 11.34% [1] 11.34% [1] 11.34% [1] 10.38% [2] 10.38% [2] 10.38% [2] 10.38% [2]
Total first lien senior secured loans $ 9.8 [3],[4]   $ 9.8 [3],[4]   $ 9.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 9.6 [3],[4]   9.6 [3],[4]   9.3 [6],[7]                
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 41.4 [4]   41.4 [4]   39.4 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 33.9 [4]   $ 33.9 [4]   $ 36.2 [7]                
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.23% [1]   10.23% [1]   9.23% [2] 10.23% [1] 10.23% [1] 10.23% [1] 10.23% [1] 9.23% [2] 9.23% [2] 9.23% [2] 9.23% [2]
Total first lien senior secured loans $ 9.1 [3],[4],[11]   $ 9.1 [3],[4],[11]   $ 9.1 [6],[7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 8.1 [3],[4],[11]   $ 8.1 [3],[4],[11]   $ 6.8 [6],[7],[12]                
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.66%         12.66% 12.66% 12.66% 12.66%
Total first lien senior secured loans [6],[7]         $ 0.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.2                
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., Second lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.98%   13.98%     13.98% 13.98% 13.98% 13.98%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.1   $ 0.1                    
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., Second lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.73%   13.73%     13.73% 13.73% 13.73% 13.73%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.1   0.1                    
Investment, Identifier [Axis]: Avetta, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.2   4.2   4.2                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 4.2   4.2   4.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 4.2   $ 4.2   $ 4.2                
Investment, Identifier [Axis]: Avetta, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.02% [1]   11.02% [1]   10.16% [2] 11.02% [1] 11.02% [1] 11.02% [1] 11.02% [1] 10.16% [2] 10.16% [2] 10.16% [2] 10.16% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: AxiomSL Group, Inc. and Calypso Group, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.9   3.9   3.9                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 3.9   3.9   3.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.9   $ 3.9   $ 3.9                
Investment, Identifier [Axis]: AxiomSL Group, Inc. and Calypso Group, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.97% [1]   10.97% [1]   10.13% [2] 10.97% [1] 10.97% [1] 10.97% [1] 10.97% [1] 10.13% [2] 10.13% [2] 10.13% [2] 10.13% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 21.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   21.2 [6],[7]                
Investment, Identifier [Axis]: Axiomatic, LLC, Class A-1 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.5   $ 5.5   5.3                
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         2.0                
Less: funded commitments         0.0                
Total unfunded commitments         2.0                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 2.0                
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.73%         9.73% 9.73% 9.73% 9.73%
Total first lien senior secured loans [6],[7]         $ 6.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         5.9                
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.16%   10.16%     10.16% 10.16% 10.16% 10.16%        
Total first lien senior secured loans [3],[4] $ 3.2   $ 3.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 3.2   $ 3.2                    
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.50%   10.50%     10.50% 10.50% 10.50% 10.50%        
Total first lien senior secured loans [3],[4] $ 2.8   $ 2.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 2.7   2.7                    
Investment, Identifier [Axis]: BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.3 [4]   $ 4.3 [4]   $ 3.9 [7]                
Investment, Identifier [Axis]: BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.80% [1]   11.80% [1]   11.02% [2] 11.80% [1] 11.80% [1] 11.80% [1] 11.80% [1] 11.02% [2] 11.02% [2] 11.02% [2] 11.02% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [3],[4]   0.2 [3],[4]   0.2 [6],[7]                
Investment, Identifier [Axis]: BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 5.3 [4]   5.3 [4]   5.0 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.3 [4]   $ 5.3 [4]   4.9 [7]                
Investment, Identifier [Axis]: BCTO Ignition Purchaser, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.98%   13.98%     13.98% 13.98% 13.98% 13.98%        
Total first lien senior secured loans [3],[4],[5] $ 3.4   $ 3.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 3.3   3.3                    
Investment, Identifier [Axis]: BH-Sharp Holdings LP, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.7 [4]   $ 2.7 [4]   $ 2.3 [7]                
Investment, Identifier [Axis]: Badger Sportswear Acquisition, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         13.57%         13.57% 13.57% 13.57% 13.57%
Total first lien senior secured loans [6],[7]         $ 56.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         56.8                
Investment, Identifier [Axis]: Badger Sportswear Acquisition, LLC, Second lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 14.48%   14.48%     14.48% 14.48% 14.48% 14.48%        
Total first lien senior secured loans [3],[4] $ 28.4   $ 28.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 28.4   $ 28.4                    
Investment, Identifier [Axis]: Badger Sportswear Acquisition, LLC, Second lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 14.27%   14.27%     14.27% 14.27% 14.27% 14.27%        
Total first lien senior secured loans [3],[4] $ 28.4   $ 28.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 28.4   28.4                    
Investment, Identifier [Axis]: Balrog Acquisition, Inc., Balrog Topco, Inc. and Balrog Parent, L.P., Class A preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 14.0 [4]   $ 14.0 [4]   $ 10.5 [7]                
Investment, Identifier [Axis]: Balrog Acquisition, Inc., Balrog Topco, Inc. and Balrog Parent, L.P., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.53% [1]   12.53% [1]   11.73% [2] 12.53% [1] 12.53% [1] 12.53% [1] 12.53% [1] 11.73% [2] 11.73% [2] 11.73% [2] 11.73% [2]
Total first lien senior secured loans $ 29.5 [3],[4]   $ 29.5 [3],[4]   $ 29.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 29.5 [3],[4]   29.5 [3],[4]   29.5 [6],[7]                
Investment, Identifier [Axis]: Balrog Acquisition, Inc., Balrog Topco, Inc. and Balrog Parent, L.P., Series A preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 26.8 [4]   26.8 [4]   25.4 [7]                
Investment, Identifier [Axis]: Bambino Group Holdings, LLC, Class A preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.8 [4]   $ 0.8 [4]   $ 0.9 [7]                
Investment, Identifier [Axis]: Bamboo Purchaser, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.39% [1]   12.39% [1]   10.73% [2] 12.39% [1] 12.39% [1] 12.39% [1] 12.39% [1] 10.73% [2] 10.73% [2] 10.73% [2] 10.73% [2]
Total first lien senior secured loans $ 17.9 [3],[4]   $ 17.9 [3],[4]   $ 17.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 17.0 [3],[4]   17.0 [3],[4]   17.4 [6],[7]                
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.6   12.6   8.0                
Less: funded commitments (1.0)   (1.0)   (0.9)                
Total unfunded commitments 11.6   11.6   7.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 11.6   $ 11.6   $ 7.1                
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.20% [1]   12.20% [1]   11.23% [2] 12.20% [1] 12.20% [1] 12.20% [1] 12.20% [1] 11.23% [2] 11.23% [2] 11.23% [2] 11.23% [2]
Total first lien senior secured loans $ 1.0 [3],[4],[5]   $ 1.0 [3],[4],[5]   $ 20.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.0 [3],[4],[5]   $ 1.0 [3],[4],[5]   $ 20.3 [6],[7]                
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.20% [1]   12.20% [1]   11.23% [2] 12.20% [1] 12.20% [1] 12.20% [1] 12.20% [1] 11.23% [2] 11.23% [2] 11.23% [2] 11.23% [2]
Total first lien senior secured loans $ 0.2 [3],[4],[5]   $ 0.2 [3],[4],[5]   $ 1.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [3],[4],[5]   $ 0.2 [3],[4],[5]   $ 1.0 [6],[7]                
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   10.88% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 10.88% [2] 10.88% [2] 10.88% [2] 10.88% [2]
Total first lien senior secured loans $ 1.0 [3],[4],[5]   $ 1.0 [3],[4],[5]   $ 0.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.0 [3],[4],[5]   1.0 [3],[4],[5]   0.9 [6],[7]                
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, Preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 7.9 [4],[5]   7.9 [4],[5]   5.4 [7]                
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.5   1.5   5.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 1.5   1.5   5.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.5   $ 1.5   $ 5.5                
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.39%         9.39% 9.39% 9.39% 9.39%
Total first lien senior secured loans [6],[7],[8]         $ 17.9                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[8]         17.7                
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.85%   10.85%     10.85% 10.85% 10.85% 10.85%        
Total first lien senior secured loans [3],[4],[5] $ 20.1   $ 20.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 19.9   $ 19.9                    
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.85%   10.85%     10.85% 10.85% 10.85% 10.85%        
Total first lien senior secured loans [3],[4],[5] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 0.3   0.3                    
Investment, Identifier [Axis]: Beacon Wellness Brands, Inc. and CDI Holdings I Corp.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.9   0.9                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 0.9   0.9                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 0.9   0.9                    
Investment, Identifier [Axis]: Beacon Wellness Brands, Inc. and CDI Holdings I Corp., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 4.0   $ 4.0                    
Investment, Identifier [Axis]: Beacon Wellness Brands, Inc. and CDI Holdings I Corp., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.95%   10.95%     10.95% 10.95% 10.95% 10.95%        
Total first lien senior secured loans [3],[4] $ 3.7   $ 3.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 3.6   3.6                    
Investment, Identifier [Axis]: Belfor Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 25.0   25.0   25.0                
Less: funded commitments (7.0)   (7.0)   (17.0)                
Total unfunded commitments 18.0   18.0   8.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 18.0   $ 18.0   $ 8.0                
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 7.07%   7.07%     7.07% 7.07% 7.07% 7.07%        
Total first lien senior secured loans [4],[13] $ 2.6   $ 2.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[13] 2.4   2.4                    
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         7.25%         7.25% 7.25% 7.25% 7.25%
Total first lien senior secured loans [7],[14]         $ 11.6                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[14]         $ 12.1                
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.25%         10.25% 10.25% 10.25% 10.25%
Total first lien senior secured loans [7],[14]         $ 1.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[14]         1.4                
Investment, Identifier [Axis]: Benecon Midco II LLC and Locutus Holdco LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.5   4.5   4.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 4.5   4.5   4.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 4.5   4.5   4.5                
Investment, Identifier [Axis]: Benecon Midco II LLC and Locutus Holdco LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 28.5   28.5   22.1                
Investment, Identifier [Axis]: Benefytt Technologies, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.9   0.9   0.9                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.9   0.9   0.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions (0.9)   (0.9)   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.0   0.0   $ 0.9                
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         13.16%         13.16% 13.16% 13.16% 13.16%
Total first lien senior secured loans [6],[7]         $ 29.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         23.9                
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [4],[9] 25.0   25.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[9] 10.0   10.0                    
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [4],[9] 5.3   5.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[9] 2.1   2.1                    
Investment, Identifier [Axis]: Berner Food & Beverage, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.7   1.7   1.7                
Less: funded commitments (1.1)   (1.1)   (0.5)                
Total unfunded commitments 0.6   0.6   1.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.6   $ 0.6   $ 1.2                
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.75% [1]   12.75% [1]   12.00% [2] 12.75% [1] 12.75% [1] 12.75% [1] 12.75% [1] 12.00% [2] 12.00% [2] 12.00% [2] 12.00% [2]
Total first lien senior secured loans $ 0.8 [3],[4]   $ 0.8 [3],[4]   $ 0.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.8 [3],[4]   $ 0.8 [3],[4]   $ 0.4 [6],[7]                
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.91% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.91% [2] 9.91% [2] 9.91% [2] 9.91% [2]
Total first lien senior secured loans $ 0.3 [3],[4]   $ 0.3 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.3 [3],[4]   0.3 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: Blue Wolf Capital Fund II, L.P.                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   0.0                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     0.0   (0.2)                
Fair Value 0.1   0.1   0.1                
Investment, Identifier [Axis]: Blue Wolf Capital Fund II, L.P., Limited partnership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [5],[11]   0.1 [5],[11]   0.1 [8],[12]                
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.0   3.0   3.0                
Less: funded commitments (0.9)   (0.9)   (2.8)                
Total unfunded commitments 2.1   2.1   0.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.1   $ 2.1   $ 0.2                
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.70%         10.70% 10.70% 10.70% 10.70%
Total first lien senior secured loans [6],[7]         $ 1.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 1.0                
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.89%   11.89%     11.89% 11.89% 11.89% 11.89%        
Total first lien senior secured loans [3],[4] $ 0.8   $ 0.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.8   $ 0.8                    
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.61%   11.61%     11.61% 11.61% 11.61% 11.61%        
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.2   $ 0.2                    
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.72%         10.72% 10.72% 10.72% 10.72%
Total first lien senior secured loans [6],[7]         $ 2.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         2.7                
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.76%   11.76%     11.76% 11.76% 11.76% 11.76%        
Total first lien senior secured loans [3],[4] $ 0.5   $ 0.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.5   $ 0.5                    
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.62%   11.62%     11.62% 11.62% 11.62% 11.62%        
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.4   0.4                    
Investment, Identifier [Axis]: Bobcat Purchaser, LLC and Bobcat Topco, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 10.5   10.5                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 10.5   10.5                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 10.5   10.5                    
Investment, Identifier [Axis]: Bobcat Purchaser, LLC and Bobcat Topco, L.P., Class A-1 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.5   $ 1.5                    
Investment, Identifier [Axis]: Bobcat Purchaser, LLC and Bobcat Topco, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.49%   11.49%     11.49% 11.49% 11.49% 11.49%        
Total first lien senior secured loans [3],[4] $ 11.8   $ 11.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 11.5   11.5                    
Investment, Identifier [Axis]: Borrower R365 Holdings LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.3   2.3   2.9                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.3   2.3   2.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.3   $ 2.3   $ 2.9                
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon 8.89% [1]   8.89% [1]   8.23% [2] 8.89% [1] 8.89% [1] 8.89% [1] 8.89% [1] 8.23% [2] 8.23% [2] 8.23% [2] 8.23% [2]
Total first lien senior secured loans $ 16.1 [3],[4]   $ 16.1 [3],[4]   $ 15.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 16.1 [3],[4]   $ 16.1 [3],[4]   $ 15.9 [6],[7]                
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon 8.78% [1]   8.78% [1]   8.23% [2] 8.78% [1] 8.78% [1] 8.78% [1] 8.78% [1] 8.23% [2] 8.23% [2] 8.23% [2] 8.23% [2]
Total first lien senior secured loans $ 2.0 [3],[4]   $ 2.0 [3],[4]   $ 1.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.0 [3],[4]   2.0 [3],[4]   1.4 [6],[7]                
Investment, Identifier [Axis]: Bottomline Technologies, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         2.3                
Less: funded commitments         0.0                
Total unfunded commitments         2.3                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 2.3                
Investment, Identifier [Axis]: Bottomline Technologies, Inc. and Legal Spend Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.3   2.3                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 2.3   2.3                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.3   $ 2.3                    
Investment, Identifier [Axis]: Bottomline Technologies, Inc. and Legal Spend Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.33%   10.33%     10.33% 10.33% 10.33% 10.33%        
Total first lien senior secured loans [3],[4] $ 17.9   $ 17.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 17.7   17.7                    
Investment, Identifier [Axis]: Bottomline Technologies, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.82%         9.82% 9.82% 9.82% 9.82%
Total first lien senior secured loans [6],[7]         $ 18.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         17.6                
Investment, Identifier [Axis]: Bowhunter Holdings, LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P.                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     1.6   3.3                
Redemptions (cost)     2.4   5.7                
Sales (cost)     0.0   9.8                
Interest income     1.8   3.4                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.2                
Net realized gains (losses):     0.0   (0.2)                
Net unrealized gains (losses):     0.2   3.5                
Fair Value 38.4   38.4   39.1                
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.4   4.4   4.4                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 4.4   4.4   4.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 4.4   4.4   4.4                
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P., Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 10.6 [4]   $ 10.6 [4]   $ 10.8 [7]                
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.34% [1]   12.34% [1]   11.58% [2] 12.34% [1] 12.34% [1] 12.34% [1] 12.34% [1] 11.58% [2] 11.58% [2] 11.58% [2] 11.58% [2]
Total first lien senior secured loans $ 28.1 [3],[4]   $ 28.1 [3],[4]   $ 28.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 27.8 [3],[4]   $ 27.8 [3],[4]   $ 28.3 [6],[7]                
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.45% [1]   10.45% [1]   9.67% [2] 10.45% [1] 10.45% [1] 10.45% [1] 10.45% [1] 9.67% [2] 9.67% [2] 9.67% [2] 9.67% [2]
Total first lien senior secured loans $ 22.2 [3],[4],[11]   $ 22.2 [3],[4],[11]   $ 4.8 [6],[7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 21.0 [3],[4],[11]   21.0 [3],[4],[11]   4.3 [6],[7],[12]                
Investment, Identifier [Axis]: Businessolver.com, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.6   3.6   3.6                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 3.6   3.6   3.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.6   $ 3.6   $ 3.6                
Investment, Identifier [Axis]: Businessolver.com, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.84% [1]   10.84% [1]   9.67% [2] 10.84% [1] 10.84% [1] 10.84% [1] 10.84% [1] 9.67% [2] 9.67% [2] 9.67% [2] 9.67% [2]
Total first lien senior secured loans $ 0.4 [3],[4]   $ 0.4 [3],[4]   $ 14.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.4 [3],[4]   0.4 [3],[4]   14.5 [6],[7]                
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         12.0                
Less: funded commitments         (3.7)                
Total unfunded commitments         8.3                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 8.3                
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.91%         9.91% 9.91% 9.91% 9.91%
Total first lien senior secured loans [7],[12]         $ 33.6                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[12]         26.2                
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [15]         0.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [15]         0.0                
Investment, Identifier [Axis]: CDI Holdings III Corp. and CDI Holdings I Corp.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         0.9                
Less: funded commitments         0.0                
Total unfunded commitments         0.9                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         0.9                
Investment, Identifier [Axis]: CDI Holdings III Corp. and CDI Holdings I Corp., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 4.4                
Investment, Identifier [Axis]: CDI Holdings III Corp. and CDI Holdings I Corp., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.13%         10.13% 10.13% 10.13% 10.13%
Total first lien senior secured loans [6],[7]         $ 3.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         3.6                
Investment, Identifier [Axis]: CHG PPC Parent LLC & PPC CHG Blocker LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.1 [4]   $ 3.1 [4]   $ 2.9 [7]                
Investment, Identifier [Axis]: CHG PPC Parent LLC & PPC CHG Blocker LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.97% [1]   11.97% [1]   11.13% [2] 11.97% [1] 11.97% [1] 11.97% [1] 11.97% [1] 11.13% [2] 11.13% [2] 11.13% [2] 11.13% [2]
Total first lien senior secured loans $ 94.6 [3],[4]   $ 94.6 [3],[4]   $ 94.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 92.7 [3],[4]   92.7 [3],[4]   89.9 [6],[7]                
Investment, Identifier [Axis]: CI US Holdings Inc., Series A preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 41.4   41.4                    
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 10.2   10.2   10.2                
Less: funded commitments 0.0   0.0   (0.4)                
Total unfunded commitments 10.2   10.2   9.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 10.2   10.2   9.8                
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.2 [4]   $ 6.2 [4]   $ 4.6 [7]                
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.12% [1]   10.12% [1]   9.52% [2] 10.12% [1] 10.12% [1] 10.12% [1] 10.12% [1] 9.52% [2] 9.52% [2] 9.52% [2] 9.52% [2]
Total first lien senior secured loans $ 21.7 [3],[4]   $ 21.7 [3],[4]   $ 21.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 21.7 [3],[4]   $ 21.7 [3],[4]   $ 21.4 [6],[7]                
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.28% [1]   10.28% [1]   9.40% [2] 10.28% [1] 10.28% [1] 10.28% [1] 10.28% [1] 9.40% [2] 9.40% [2] 9.40% [2] 9.40% [2]
Total first lien senior secured loans $ 3.2 [3],[4]   $ 3.2 [3],[4]   $ 3.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.2 [3],[4]   $ 3.2 [3],[4]   $ 3.7 [6],[7]                
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 9.89%   9.89%     9.89% 9.89% 9.89% 9.89%        
Total first lien senior secured loans [3],[4] $ 0.5   $ 0.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.5   0.5                    
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.47%         9.47% 9.47% 9.47% 9.47%
Total first lien senior secured loans [6],[7]         $ 0.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.4                
Investment, Identifier [Axis]: CMW Parent LLC (fka Black Arrow, Inc.), Series A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0   $ 0.0   0.0                
Investment, Identifier [Axis]: CPIG Holdco Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.15%   12.15%     12.15% 12.15% 12.15% 12.15%        
Total first lien senior secured loans [3],[4] $ 14.8   $ 14.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 14.3   14.3                    
Investment, Identifier [Axis]: CREST Exeter Street Solar 2004-1, Preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [5]   0.0 [5]   0.0 [8]                
Investment, Identifier [Axis]: CST Holding Company                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.9   1.9   1.9                
Less: funded commitments 0.0   0.0   (0.2)                
Total unfunded commitments 1.9   1.9   1.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.9   $ 1.9   $ 1.7                
Investment, Identifier [Axis]: CST Holding Company, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.95% [1]   11.95% [1]   10.97% [2] 11.95% [1] 11.95% [1] 11.95% [1] 11.95% [1] 10.97% [2] 10.97% [2] 10.97% [2] 10.97% [2]
Total first lien senior secured loans $ 11.7 [3],[4]   $ 11.7 [3],[4]   $ 11.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 11.7 [3],[4]   11.7 [3],[4]   $ 11.4 [6],[7]                
Investment, Identifier [Axis]: CST Holding Company, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.97%         10.97% 10.97% 10.97% 10.97%
Total first lien senior secured loans [6],[7]         $ 0.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.2                
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 22.6   22.6   25.8                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 22.6   22.6   25.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 22.6   22.6   25.8                
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 23.2 [4]   $ 23.2 [4]   $ 22.7 [7]                
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.60% [1]   11.60% [1]   11.13% [2] 11.60% [1] 11.60% [1] 11.60% [1] 11.60% [1] 11.13% [2] 11.13% [2] 11.13% [2] 11.13% [2]
Total first lien senior secured loans $ 38.7 [3],[4]   $ 38.7 [3],[4]   $ 49.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 38.3 [3],[4]   $ 38.3 [3],[4]   $ 49.0 [6],[7]                
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.60% [1]   11.60% [1]   11.13% [2] 11.60% [1] 11.60% [1] 11.60% [1] 11.60% [1] 11.13% [2] 11.13% [2] 11.13% [2] 11.13% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 38.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 38.5 [6],[7]                
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.60% [1]   11.60% [1]   10.98% [2] 11.60% [1] 11.60% [1] 11.60% [1] 11.60% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 40.3 [3],[4]   $ 40.3 [3],[4]   $ 1.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 39.9 [3],[4]   $ 39.9 [3],[4]   $ 1.6 [6],[7]                
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.95% [1]   11.95% [1]   11.13% [2] 11.95% [1] 11.95% [1] 11.95% [1] 11.95% [1] 11.13% [2] 11.13% [2] 11.13% [2] 11.13% [2]
Total first lien senior secured loans $ 4.9 [3],[4]   $ 4.9 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.9 [3],[4]   4.9 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: Cadence Aerospace, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.9   7.9   15.3                
Less: funded commitments (0.1)   (0.1)   (14.8)                
Total unfunded commitments 7.8   7.8   0.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 7.8   $ 7.8   $ 0.5                
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon 13.91% [1]   13.91% [1]   12.92% [2] 13.91% [1] 13.91% [1] 13.91% [1] 13.91% [1] 12.92% [2] 12.92% [2] 12.92% [2] 12.92% [2]
Total first lien senior secured loans $ 10.8 [3],[4]   $ 10.8 [3],[4]   $ 31.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 10.8 [3],[4]   $ 10.8 [3],[4]   $ 30.5 [6],[7]                
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon 13.91% [1]   13.91% [1]   12.92% [2] 13.91% [1] 13.91% [1] 13.91% [1] 13.91% [1] 12.92% [2] 12.92% [2] 12.92% [2] 12.92% [2]
Total first lien senior secured loans $ 3.4 [3],[4]   $ 3.4 [3],[4]   $ 11.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.4 [3],[4]   $ 3.4 [3],[4]   $ 11.6 [6],[7]                
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon 13.91% [1]   13.91% [1]   12.92% [2] 13.91% [1] 13.91% [1] 13.91% [1] 13.91% [1] 12.92% [2] 12.92% [2] 12.92% [2] 12.92% [2]
Total first lien senior secured loans $ 4.1 [3],[4]   $ 4.1 [3],[4]   $ 9.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.1 [3],[4]   $ 4.1 [3],[4]   $ 9.5 [6],[7]                
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon 13.91% [1]   13.91% [1]   13.23% [2] 13.91% [1] 13.91% [1] 13.91% [1] 13.91% [1] 13.23% [2] 13.23% [2] 13.23% [2] 13.23% [2]
Total first lien senior secured loans $ 2.7 [3],[4]   $ 2.7 [3],[4]   $ 7.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7 [3],[4]   2.7 [3],[4]   $ 7.6 [6],[7]                
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.92%         12.92% 12.92% 12.92% 12.92%
Total first lien senior secured loans [6],[7]         $ 5.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 5.2                
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [16] 0.0   0.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [16] 0.0   0.0                    
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.92%         12.92% 12.92% 12.92% 12.92%
Total first lien senior secured loans [6],[7],[14]         $ 13.7                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[14]         $ 13.4                
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.92%         12.92% 12.92% 12.92% 12.92%
Total first lien senior secured loans [6],[7],[14]         $ 1.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[14]         1.0                
Investment, Identifier [Axis]: Caerus Midco 3 S.à r.l.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.1   4.1   4.1                
Less: funded commitments (0.1)   (0.1)   0.0                
Total unfunded commitments 4.0   4.0   4.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 4.0   $ 4.0   $ 4.1                
Investment, Identifier [Axis]: Caerus Midco 3 S.à r.l., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.99% [1]   10.99% [1]   9.83% [2] 10.99% [1] 10.99% [1] 10.99% [1] 10.99% [1] 9.83% [2] 9.83% [2] 9.83% [2] 9.83% [2]
Total first lien senior secured loans $ 5.4 [3],[4],[5]   $ 5.4 [3],[4],[5]   $ 5.4 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.4 [3],[4],[5]   $ 5.4 [3],[4],[5]   5.3 [6],[7],[8]                
Investment, Identifier [Axis]: Caerus Midco 3 S.à r.l., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.85%   10.85%     10.85% 10.85% 10.85% 10.85%        
Total first lien senior secured loans [3],[4],[5] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 0.1   0.1                    
Investment, Identifier [Axis]: CallMiner, Inc., Warrant to purchase shares of Series 1 preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0   $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Calyx Energy III, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.37%         12.37% 12.37% 12.37% 12.37%
Total first lien senior secured loans [6],[7]         $ 57.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         57.0                
Investment, Identifier [Axis]: Calyx Energy III, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.22%   13.22%     13.22% 13.22% 13.22% 13.22%        
Total first lien senior secured loans [3],[4] $ 50.5   $ 50.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 50.5   $ 50.5                    
Investment, Identifier [Axis]: Calyx Energy III, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 16.22%   16.22%     16.22% 16.22% 16.22% 16.22%        
Total first lien senior secured loans [3],[4] $ 5.0   $ 5.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 5.0   5.0                    
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 15.3   15.3   15.3                
Less: funded commitments (7.6)   (7.6)   (8.8)                
Total unfunded commitments 7.7   7.7   6.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 7.7   7.7   6.5                
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 18.5 [4]   $ 18.5 [4]   $ 20.1 [7]                
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.95% [1]   9.95% [1]   9.13% [2] 9.95% [1] 9.95% [1] 9.95% [1] 9.95% [1] 9.13% [2] 9.13% [2] 9.13% [2] 9.13% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [3],[4]   0.2 [3],[4]   0.2 [6],[7]                
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 0.0 [16]   0.0 [16]   0.0 [15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [16]   $ 0.0 [16]   $ 0.0 [15]                
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.95% [1]   13.95% [1]   13.13% [2] 13.95% [1] 13.95% [1] 13.95% [1] 13.95% [1] 13.13% [2] 13.13% [2] 13.13% [2] 13.13% [2]
Total first lien senior secured loans $ 68.3 [3],[4]   $ 68.3 [3],[4]   $ 68.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 68.3 [3],[4]   68.3 [3],[4]   68.3 [6],[7]                
Investment, Identifier [Axis]: Captive Resources Midco, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.2   1.2   1.2                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 1.2   1.2   1.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.2   $ 1.2   $ 1.2                
Investment, Identifier [Axis]: Captive Resources Midco, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 7.73% [1]   7.73% [1]   7.20% [2] 7.73% [1] 7.73% [1] 7.73% [1] 7.73% [1] 7.20% [2] 7.20% [2] 7.20% [2] 7.20% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.0   5.0   5.0                
Less: funded commitments (4.9)   (4.9)   (3.4)                
Total unfunded commitments 0.1   0.1   1.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.1   $ 0.1   $ 1.6                
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.75% [1]   11.75% [1]   11.00% [2] 11.75% [1] 11.75% [1] 11.75% [1] 11.75% [1] 11.00% [2] 11.00% [2] 11.00% [2] 11.00% [2]
Total first lien senior secured loans $ 4.9 [3],[4]   $ 4.9 [3],[4]   $ 3.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.7 [3],[4]   $ 4.7 [3],[4]   $ 3.0 [6],[7]                
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.46%         12.46% 12.46% 12.46% 12.46%
Total first lien senior secured loans [6],[7]         $ 64.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         57.8                
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Second lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.96%   12.96%     12.96% 12.96% 12.96% 12.96%        
Total first lien senior secured loans [3],[4] $ 1.7   $ 1.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.6   $ 1.6                    
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Second lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.14%   13.14%     13.14% 13.14% 13.14% 13.14%        
Total first lien senior secured loans [3],[4] $ 62.6   $ 62.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 59.4   59.4                    
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Series A preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 28.9 [4]   28.9 [4]   26.3 [7]                
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Series A-2 preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 10.3 [4]   10.3 [4]   9.4 [7]                
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Series A-3 preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 12.4 [4]   12.4 [4]   11.1 [7]                
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 17.0   17.0   20.4                
Less: funded commitments (9.5)   (9.5)   (9.0)                
Total unfunded commitments 7.5   7.5   11.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions (0.1)   (0.1)   (11.4)                
Total net adjusted unfunded revolving and delayed draw loan commitments 7.4   7.4   0.0                
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 8.0 [4],[9]   8.0 [4],[9]   9.5 [7],[10]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4],[9]   0.0 [4],[9]   4.0 [7],[10]                
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 5.1 [4],[9]   5.1 [4],[9]   2.1 [7],[10]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4],[9]   0.0 [4],[9]   0.9 [7],[10]                
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [4],[9] 5.8   5.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[9] 0.0   0.0                    
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [3],[4] 10.9   10.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 5.5   5.5                    
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 6.8 [4],[9],[13]   6.8 [4],[9],[13]   6.8 [7],[10],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4],[9],[13]   0.0 [4],[9],[13]   2.9 [7],[10],[14]                
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 1.0 [4],[9]   1.0 [4],[9]   0.6 [7],[10],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4],[9]   0.0 [4],[9]   0.2 [7],[10],[14]                
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 8.6   8.6   8.6                
Less: funded commitments (5.4)   (5.4)   (5.0)                
Total unfunded commitments 3.2   3.2   3.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.2   $ 3.2   $ 3.6                
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 7.63% [1]   7.63% [1]   13.30% [2] 7.63% [1] 7.63% [1] 7.63% [1] 7.63% [1] 13.30% [2] 13.30% [2] 13.30% [2] 13.30% [2]
Total first lien senior secured loans $ 77.9 [3],[4]   $ 77.9 [3],[4]   $ 75.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 63.9 [3],[4]   $ 63.9 [3],[4]   $ 70.9 [6],[7]                
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.70%         9.70% 9.70% 9.70% 9.70%
Total first lien senior secured loans [6],[7]         $ 5.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         4.7                
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.69%   10.69%     10.69% 10.69% 10.69% 10.69%        
Total first lien senior secured loans [3],[4] $ 3.2   $ 3.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 3.0   $ 3.0                    
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.83%   10.83%     10.83% 10.83% 10.83% 10.83%        
Total first lien senior secured loans [3],[4] $ 2.3   $ 2.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 2.2   2.2                    
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, Membership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   2.9 [7]                
Investment, Identifier [Axis]: Chariot Buyer LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.3   12.3   12.3                
Less: funded commitments (0.9)   (0.9)   (3.5)                
Total unfunded commitments 11.4   11.4   8.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 11.4   $ 11.4   $ 8.8                
Investment, Identifier [Axis]: Chariot Buyer LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.20% [1]   8.20% [1]   7.38% [2] 8.20% [1] 8.20% [1] 8.20% [1] 8.20% [1] 7.38% [2] 7.38% [2] 7.38% [2] 7.38% [2]
Total first lien senior secured loans $ 0.9 [4]   $ 0.9 [4]   $ 3.5 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.8 [4]   $ 0.8 [4]   $ 3.2 [7]                
Investment, Identifier [Axis]: Chariot Buyer LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.09% [1]   12.09% [1]   11.13% [2] 12.09% [1] 12.09% [1] 12.09% [1] 12.09% [1] 11.13% [2] 11.13% [2] 11.13% [2] 11.13% [2]
Total first lien senior secured loans $ 134.4 [3],[4]   $ 134.4 [3],[4]   $ 134.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 130.4 [3],[4]   130.4 [3],[4]   126.3 [6],[7]                
Investment, Identifier [Axis]: Cheyenne Petroleum Company Limited Partnership, CPC 2001 LLC and Mill Shoals LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 9.5   9.5   9.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 9.5   9.5   9.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 9.5   $ 9.5   $ 9.5                
Investment, Identifier [Axis]: Cheyenne Petroleum Company Limited Partnership, CPC 2001 LLC and Mill Shoals LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.34% [1]   14.34% [1]   13.69% [2] 14.34% [1] 14.34% [1] 14.34% [1] 14.34% [1] 13.69% [2] 13.69% [2] 13.69% [2] 13.69% [2]
Total first lien senior secured loans $ 49.3 [3],[4]   $ 49.3 [3],[4]   $ 49.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 49.3 [3],[4]   49.3 [3],[4]   $ 47.8 [6],[7]                
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         15.48%         15.48% 15.48% 15.48% 15.48%
Total first lien senior secured loans [6],[7]         $ 68.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 66.9                
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         15.48%         15.48% 15.48% 15.48% 15.48%
Total first lien senior secured loans [6],[7]         $ 30.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 29.4                
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         15.48%         15.48% 15.48% 15.48% 15.48%
Total first lien senior secured loans [6],[7]         $ 20.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 19.6                
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         15.48%         15.48% 15.48% 15.48% 15.48%
Total first lien senior secured loans [6],[7]         $ 15.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 15.2                
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         15.23%         15.23% 15.23% 15.23% 15.23%
Total first lien senior secured loans [6],[7]         $ 12.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 11.9                
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 6                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         15.48%         15.48% 15.48% 15.48% 15.48%
Total first lien senior secured loans [6],[7]         $ 4.9                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 4.8                
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 7                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         15.48%         15.48% 15.48% 15.48% 15.48%
Total first lien senior secured loans [6],[7]         $ 3.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 3.0                
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 8                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         15.48%         15.48% 15.48% 15.48% 15.48%
Total first lien senior secured loans [6],[7]         $ 3.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         3.0                
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., Warrant to purchase units of shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[8]         8.8                
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 8.0   8.0                    
Less: funded commitments (0.8)   (0.8)                    
Total unfunded commitments 7.2   7.2                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 7.2   7.2                    
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.7   $ 6.7                    
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.60%   11.60%     11.60% 11.60% 11.60% 11.60%        
Total first lien senior secured loans [3],[4] $ 3.2   $ 3.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 3.2   $ 3.2                    
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.08%   12.08%     12.08% 12.08% 12.08% 12.08%        
Total first lien senior secured loans [3],[4] $ 5.9   $ 5.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 5.9   $ 5.9                    
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.91%   11.91%     11.91% 11.91% 11.91% 11.91%        
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.2   $ 0.2                    
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.64%   10.64%     10.64% 10.64% 10.64% 10.64%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.3   $ 0.3                    
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.68%   10.68%     10.68% 10.68% 10.68% 10.68%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.1   $ 0.1                    
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured revolving loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.85%   10.85%     10.85% 10.85% 10.85% 10.85%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.3   0.3                    
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 19.0   19.0                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 19.0   19.0                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 19.0   $ 19.0                    
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 9.84%   9.84%     9.84% 9.84% 9.84% 9.84%        
Total first lien senior secured loans [3],[4],[11] $ 10.8   $ 10.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[11] $ 10.1   $ 10.1                    
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., First lien senior secured notes                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 6.50%   6.50%     6.50% 6.50% 6.50% 6.50%        
Total first lien senior secured loans [4],[11] $ 88.9   $ 88.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[11] 79.1   79.1                    
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 17.3   $ 17.3                    
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Second lien senior secured notes                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 9.00%   9.00%     9.00% 9.00% 9.00% 9.00%        
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[11] $ 105.2   $ 105.2                    
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Series A preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 153.7   153.7                    
Investment, Identifier [Axis]: CoLTs 2005-1 Ltd.                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   0.0                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     0.0   0.0                
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: CoLTs 2005-1 Ltd., Preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [5]   0.0 [5]   0.0 [8]                
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 6.3   6.3   7.8                
Less: funded commitments 0.0   0.0   (2.5)                
Total unfunded commitments 6.3   6.3   5.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 6.3   6.3   5.3                
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.8 [4]   $ 3.8 [4]   $ 0.0 [7]                
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.63%         9.63% 9.63% 9.63% 9.63%
Total first lien senior secured loans [6],[7]         $ 30.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 29.0                
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.22%   11.22%     11.22% 11.22% 11.22% 11.22%        
Total first lien senior secured loans [3],[4] $ 30.8   $ 30.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 30.3   $ 30.3                    
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.44%   10.44%     10.44% 10.44% 10.44% 10.44%        
Total first lien senior secured loans [3] $ 0.8   $ 0.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3] $ 0.8   $ 0.8                    
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.19%   11.19%     11.19% 11.19% 11.19% 11.19%        
Total first lien senior secured loans [3],[4] $ 11.6   $ 11.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 11.6   11.6                    
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.63%         9.63% 9.63% 9.63% 9.63%
Total first lien senior secured loans [6],[7]         $ 2.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         2.4                
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., Preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.4 [4]   0.4 [4]   4.0 [7]                
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., Series A preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 75.0 [3],[4]   $ 75.0 [3],[4]   $ 69.7 [7]                
Investment, Identifier [Axis]: Color Intermediate, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.84% [1]   10.84% [1]   10.08% [2] 10.84% [1] 10.84% [1] 10.84% [1] 10.84% [1] 10.08% [2] 10.08% [2] 10.08% [2] 10.08% [2]
Total first lien senior secured loans $ 20.3 [3],[4]   $ 20.3 [3],[4]   $ 20.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 20.1 [3],[4]   20.1 [3],[4]   19.5 [6],[7]                
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.6   0.6   0.6                
Less: funded commitments (0.3)   (0.3)   0.0                
Total unfunded commitments 0.3   0.3   0.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.3   $ 0.3   $ 0.6                
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.43% [1]   11.43% [1]   10.33% [2] 11.43% [1] 11.43% [1] 11.43% [1] 11.43% [1] 10.33% [2] 10.33% [2] 10.33% [2] 10.33% [2]
Total first lien senior secured loans $ 24.7 [3],[4]   $ 24.7 [3],[4]   $ 33.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 24.7 [3],[4]   $ 24.7 [3],[4]   $ 33.3 [6],[7]                
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.39%   11.39%     11.39% 11.39% 11.39% 11.39%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.3   $ 0.3                    
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.00% [1]   13.00% [1]   13.00% [2] 13.00% [1] 13.00% [1] 13.00% [1] 13.00% [1] 13.00% [2] 13.00% [2] 13.00% [2] 13.00% [2]
Total first lien senior secured loans $ 19.9 [4]   $ 19.9 [4]   $ 19.9 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 19.9 [4]   19.9 [4]   19.5 [7]                
Investment, Identifier [Axis]: Community Brands ParentCo, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.2   7.2   7.2                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 7.2   7.2   7.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 7.2   7.2   7.2                
Investment, Identifier [Axis]: Community Brands ParentCo, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.3 [4]   $ 6.3 [4]   $ 6.4 [7]                
Investment, Identifier [Axis]: Community Brands ParentCo, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   10.17% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 10.17% [2] 10.17% [2] 10.17% [2] 10.17% [2]
Total first lien senior secured loans $ 10.6 [3],[4]   $ 10.6 [3],[4]   $ 10.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 10.4 [3],[4]   10.4 [3],[4]   10.4 [6],[7]                
Investment, Identifier [Axis]: Compex Legal Services, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.6   3.6   3.6                
Less: funded commitments (2.5)   (2.5)   (1.8)                
Total unfunded commitments 1.1   1.1   1.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.1   $ 1.1   $ 1.8                
Investment, Identifier [Axis]: Compex Legal Services, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.79% [1]   10.79% [1]   9.51% [2] 10.79% [1] 10.79% [1] 10.79% [1] 10.79% [1] 9.51% [2] 9.51% [2] 9.51% [2] 9.51% [2]
Total first lien senior secured loans $ 2.5 [3],[4]   $ 2.5 [3],[4]   $ 1.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.5 [3],[4]   2.5 [3],[4]   1.8 [6],[7]                
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.9   1.9   1.9                
Less: funded commitments (1.9)   (1.9)   (0.8)                
Total unfunded commitments 0.0   0.0   1.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.0   $ 0.0   $ 1.1                
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.74% [1]   11.74% [1]   10.59% [2] 11.74% [1] 11.74% [1] 11.74% [1] 11.74% [1] 10.59% [2] 10.59% [2] 10.59% [2] 10.59% [2]
Total first lien senior secured loans $ 0.3 [3],[4]   $ 0.3 [3],[4]   $ 0.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.3 [3],[4]   $ 0.3 [3],[4]   $ 0.3 [6],[7]                
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.00% [1]   12.00% [1]   10.58% [2] 12.00% [1] 12.00% [1] 12.00% [1] 12.00% [1] 10.58% [2] 10.58% [2] 10.58% [2] 10.58% [2]
Total first lien senior secured loans $ 1.9 [3],[4]   $ 1.9 [3],[4]   $ 0.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.8 [3],[4]   $ 1.8 [3],[4]   $ 0.7 [6],[7]                
Investment, Identifier [Axis]: Computer Services, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.03% [1]   12.03% [1]   11.15% [2] 12.03% [1] 12.03% [1] 12.03% [1] 12.03% [1] 11.15% [2] 11.15% [2] 11.15% [2] 11.15% [2]
Total first lien senior secured loans $ 34.0 [3],[4]   $ 34.0 [3],[4]   $ 34.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 34.0 [3],[4]   34.0 [3],[4]   33.0 [6],[7]                
Investment, Identifier [Axis]: Concert Golf Partners Holdco LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.1   3.1   3.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 3.1   3.1   3.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.1   3.1   3.1                
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 13.1   13.1   14.2                
Less: funded commitments (1.3)   (1.3)   (0.8)                
Total unfunded commitments 11.8   11.8   13.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 11.8   11.8   13.4                
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 7.5 [4],[5]   $ 7.5 [4],[5]   $ 6.5 [7],[8]                
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.48% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 74.5 [3],[4],[5]   $ 74.5 [3],[4],[5]   $ 11.7 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 72.3 [3],[4],[5]   $ 72.3 [3],[4],[5]   $ 11.4 [6],[7],[8]                
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.81% [1]   9.81% [1]   10.48% [2] 9.81% [1] 9.81% [1] 9.81% [1] 9.81% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 28.5 [4],[5]   $ 28.5 [4],[5]   $ 74.8 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 27.6 [4],[5]   $ 27.6 [4],[5]   $ 72.6 [6],[7],[8]                
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   8.39% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 8.39% [2] 8.39% [2] 8.39% [2] 8.39% [2]
Total first lien senior secured loans $ 11.7 [3],[4],[5]   $ 11.7 [3],[4],[5]   $ 26.9 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 11.3 [3],[4],[5]   $ 11.3 [3],[4],[5]   $ 26.1 [7],[8]                
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         8.32%         8.32% 8.32% 8.32% 8.32%
Total first lien senior secured loans [6],[7],[8]         $ 0.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[8]         0.8                
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 9.81%   9.81%     9.81% 9.81% 9.81% 9.81%        
Total first lien senior secured loans [3],[4],[5] $ 0.2   $ 0.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 0.2   $ 0.2                    
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.14%   11.14%     11.14% 11.14% 11.14% 11.14%        
Total first lien senior secured loans [3],[4],[5] $ 1.1   $ 1.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 1.0   1.0                    
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., Series A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [4],[5]   $ 0.0 [4],[5]   $ 0.0 [7],[8]                
Investment, Identifier [Axis]: Continental Acquisition Holdings, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.89% [1]   11.89% [1]   11.48% [2] 11.89% [1] 11.89% [1] 11.89% [1] 11.89% [1] 11.48% [2] 11.48% [2] 11.48% [2] 11.48% [2]
Total first lien senior secured loans $ 36.0 [3],[4]   $ 36.0 [3],[4]   $ 36.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 32.0 [3],[4]   $ 32.0 [3],[4]   $ 33.3 [6],[7]                
Investment, Identifier [Axis]: Continental Acquisition Holdings, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.89% [1]   11.89% [1]   11.48% [2] 11.89% [1] 11.89% [1] 11.89% [1] 11.89% [1] 11.48% [2] 11.48% [2] 11.48% [2] 11.48% [2]
Total first lien senior secured loans $ 5.3 [3],[4]   $ 5.3 [3],[4]   $ 5.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.8 [3],[4]   4.8 [3],[4]   4.9 [6],[7]                
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.8   1.8   8.0                
Less: funded commitments (1.2)   (1.2)   (0.7)                
Total unfunded commitments 0.6   0.6   7.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.6   $ 0.6   $ 7.3                
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.38%         11.38% 11.38% 11.38% 11.38%
Total first lien senior secured loans [6],[7]         $ 0.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 0.1                
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.39%   11.39%     11.39% 11.39% 11.39% 11.39%        
Total first lien senior secured loans [3],[4] $ 6.4   $ 6.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 6.4   $ 6.4                    
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.04%   11.04%     11.04% 11.04% 11.04% 11.04%        
Total first lien senior secured loans [3],[4] $ 1.3   $ 1.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.3   $ 1.3                    
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.64%   11.64%     11.64% 11.64% 11.64% 11.64%        
Total first lien senior secured loans [3],[4] $ 1.6   $ 1.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.6   $ 1.6                    
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         13.50%         13.50% 13.50% 13.50% 13.50%
Total first lien senior secured loans [6],[7]         $ 0.7                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.7                
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.25%   13.25%     13.25% 13.25% 13.25% 13.25%        
Total first lien senior secured loans [3],[4] $ 0.6   $ 0.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.6   $ 0.6                    
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.39%   10.39%     10.39% 10.39% 10.39% 10.39%        
Total first lien senior secured loans [3],[4] $ 0.5   $ 0.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.5   0.5                    
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.3   2.3   2.3                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.3   2.3   2.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.3   $ 2.3   $ 2.3                
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.33%         10.33% 10.33% 10.33% 10.33%
Total first lien senior secured loans [6],[7],[8]         $ 62.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[8]         $ 62.8                
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.24%   11.24%     11.24% 11.24% 11.24% 11.24%        
Total first lien senior secured loans [3],[4],[5] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 0.1   $ 0.1                    
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.39%   11.39%     11.39% 11.39% 11.39% 11.39%        
Total first lien senior secured loans [3],[4],[5] $ 17.6   $ 17.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 17.6   $ 17.6                    
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.59% [1]   10.59% [1]   9.48% [2] 10.59% [1] 10.59% [1] 10.59% [1] 10.59% [1] 9.48% [2] 9.48% [2] 9.48% [2] 9.48% [2]
Total first lien senior secured loans $ 2.7 [3],[4],[5]   $ 2.7 [3],[4],[5]   $ 2.7 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.5 [3],[4],[5]   $ 2.5 [3],[4],[5]   $ 2.6 [6],[7],[8]                
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.59% [1]   10.59% [1]   9.83% [2] 10.59% [1] 10.59% [1] 10.59% [1] 10.59% [1] 9.83% [2] 9.83% [2] 9.83% [2] 9.83% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [6],[7],[8]                
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.59% [1]   10.59% [1]   9.93% [2] 10.59% [1] 10.59% [1] 10.59% [1] 10.59% [1] 9.93% [2] 9.93% [2] 9.93% [2] 9.93% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4],[5]   0.1 [3],[4],[5]   0.1 [6],[7],[8]                
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 38.9   38.9   38.9                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 38.9   38.9   38.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 38.9   38.9   38.9                
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP, Limited partnership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 42.7 [4]   $ 42.7 [4]   $ 48.8 [7]                
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.69% [1]   11.69% [1]   10.94% [2] 11.69% [1] 11.69% [1] 11.69% [1] 11.69% [1] 10.94% [2] 10.94% [2] 10.94% [2] 10.94% [2]
Total first lien senior secured loans $ 155.7 [3],[4]   $ 155.7 [3],[4]   $ 155.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 138.5 [3],[4]   138.5 [3],[4]   129.2 [6],[7]                
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.1   0.1   0.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.1   0.1   0.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.1   0.1   0.1                
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., Common equity                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [4],[5]   $ 0.0 [4],[5]   $ 0.0 [7],[8]                
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.89% [1]   9.89% [1]   10.31% [2] 9.89% [1] 9.89% [1] 9.89% [1] 9.89% [1] 10.31% [2] 10.31% [2] 10.31% [2] 10.31% [2]
Total first lien senior secured loans $ 6.2 [3],[4],[5]   $ 6.2 [3],[4],[5]   $ 6.2 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.1 [3],[4],[5]   $ 6.1 [3],[4],[5]   $ 6.2 [6],[7],[8]                
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.89% [1]   9.89% [1]   9.06% [2] 9.89% [1] 9.89% [1] 9.89% [1] 9.89% [1] 9.06% [2] 9.06% [2] 9.06% [2] 9.06% [2]
Total first lien senior secured loans $ 4.3 [3],[4],[5]   $ 4.3 [3],[4],[5]   $ 4.4 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.3 [3],[4],[5]   $ 4.3 [3],[4],[5]   $ 4.3 [6],[7],[8]                
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.89% [1]   11.89% [1]   11.06% [2] 11.89% [1] 11.89% [1] 11.89% [1] 11.89% [1] 11.06% [2] 11.06% [2] 11.06% [2] 11.06% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [6],[7],[8]                
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.89% [1]   10.89% [1]   9.06% [2] 10.89% [1] 10.89% [1] 10.89% [1] 10.89% [1] 9.06% [2] 9.06% [2] 9.06% [2] 9.06% [2]
Total first lien senior secured loans $ 0.2 [3],[4],[5]   $ 0.2 [3],[4],[5]   $ 6.3 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [3],[4],[5]   $ 0.2 [3],[4],[5]   6.2 [6],[7],[8]                
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.08%   11.08%     11.08% 11.08% 11.08% 11.08%        
Total first lien senior secured loans [3],[4],[5] $ 7.7   $ 7.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 7.7   7.7                    
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., Preferred equity                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.7 [4],[5]   0.7 [4],[5]   0.7 [7],[8]                
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 38.7   38.7   38.7                
Less: funded commitments (31.6)   (31.6)   (22.7)                
Total unfunded commitments 7.1   7.1   16.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 7.1   7.1   16.0                
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Class A-1 common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 17.7 [4]   $ 17.7 [4]   $ 15.2 [7]                
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.16% [1]   8.16% [1]   7.51% [2] 8.16% [1] 8.16% [1] 8.16% [1] 8.16% [1] 7.51% [2] 7.51% [2] 7.51% [2] 7.51% [2]
Total first lien senior secured loans $ 30.9 [4],[13]   $ 30.9 [4],[13]   $ 21.9 [7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 28.5 [4],[13]   $ 28.5 [4],[13]   $ 19.7 [7],[14]                
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.00% [1]   12.00% [1]   10.88% [2] 12.00% [1] 12.00% [1] 12.00% [1] 12.00% [1] 10.88% [2] 10.88% [2] 10.88% [2] 10.88% [2]
Total first lien senior secured loans $ 137.5 [3],[4]   $ 137.5 [3],[4]   $ 137.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 126.5 [3],[4]   126.5 [3],[4]   123.7 [6],[7]                
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Series A preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 115.1 [4]   115.1 [4]   109.4 [7]                
Investment, Identifier [Axis]: Coupa Holdings, LLC and Coupa Software Incorporated                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.9   0.9                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 0.9   0.9                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.9   $ 0.9                    
Investment, Identifier [Axis]: Coupa Holdings, LLC and Coupa Software Incorporated, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.60%   12.60%     12.60% 12.60% 12.60% 12.60%        
Total first lien senior secured loans [3],[4] $ 9.0   $ 9.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 8.8   8.8                    
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 22.2   22.2   22.2                
Less: funded commitments (3.0)   (3.0)   (1.5)                
Total unfunded commitments 19.2   19.2   20.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 19.2   19.2   20.7                
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, Class A-2 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.3   $ 3.3   $ 5.5                
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.64% [1]   10.64% [1]   9.16% [2] 10.64% [1] 10.64% [1] 10.64% [1] 10.64% [1] 9.16% [2] 9.16% [2] 9.16% [2] 9.16% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.64% [1]   10.64% [1]   9.66% [2] 10.64% [1] 10.64% [1] 10.64% [1] 10.64% [1] 9.66% [2] 9.66% [2] 9.66% [2] 9.66% [2]
Total first lien senior secured loans $ 3.0 [3],[4]   $ 3.0 [3],[4]   $ 1.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.8 [3],[4]   2.8 [3],[4]   1.5 [6],[7]                
Investment, Identifier [Axis]: Coyote Buyer, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.8   5.8   5.8                
Less: funded commitments (2.3)   (2.3)   0.0                
Total unfunded commitments 3.5   3.5   5.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.5   $ 3.5   5.8                
Investment, Identifier [Axis]: Coyote Buyer, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.20%   11.20%     11.20% 11.20% 11.20% 11.20%        
Total first lien senior secured loans [3],[4] $ 2.3   $ 2.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 2.2   $ 2.2                    
Investment, Identifier [Axis]: CrossCountry Mortgage, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         56.3                
Less: funded commitments         0.0                
Total unfunded commitments         56.3                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 56.3                
Investment, Identifier [Axis]: CrossCountry Mortgage, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.48% [1]   12.48% [1]   11.73% [2] 12.48% [1] 12.48% [1] 12.48% [1] 12.48% [1] 11.73% [2] 11.73% [2] 11.73% [2] 11.73% [2]
Total first lien senior secured loans $ 93.8 [3],[4]   $ 93.8 [3],[4]   $ 93.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 93.8 [3],[4]   93.8 [3],[4]   92.8 [6],[7]                
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.2   3.2   3.2                
Less: funded commitments (0.1)   (0.1)   0.0                
Total unfunded commitments 3.1   3.1   3.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.1   3.1   3.2                
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, Class A shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.4 [4]   1.4 [4]   1.9 [7]                
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [4]   $ 0.2 [4]   $ 0.3 [7]                
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.89% [1]   10.89% [1]   10.11% [2] 10.89% [1] 10.89% [1] 10.89% [1] 10.89% [1] 10.11% [2] 10.11% [2] 10.11% [2] 10.11% [2]
Total first lien senior secured loans $ 24.4 [3],[4]   $ 24.4 [3],[4]   $ 24.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 23.7 [3],[4]   $ 23.7 [3],[4]   24.5 [6],[7]                
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.89%   10.89%     10.89% 10.89% 10.89% 10.89%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.1   0.1                    
Investment, Identifier [Axis]: DFC Global Facility Borrower III LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 76.1   76.1   96.7                
Less: funded commitments (64.5)   (64.5)   (79.3)                
Total unfunded commitments 11.6   11.6   17.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 11.6   $ 11.6   $ 17.4                
Investment, Identifier [Axis]: DFC Global Facility Borrower III LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.76% [1]   12.76% [1]   11.62% [2] 12.76% [1] 12.76% [1] 12.76% [1] 12.76% [1] 11.62% [2] 11.62% [2] 11.62% [2] 11.62% [2]
Total first lien senior secured loans $ 99.2 [3],[4],[5],[17]   $ 99.2 [3],[4],[5],[17]   $ 158.6 [6],[7],[8],[18]                
Participating interest sold 34.9   34.9   79.0                
Secured borrowings 34.9   34.9   79.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 97.8 [3],[4],[5],[17]   $ 97.8 [3],[4],[5],[17]   $ 158.6 [6],[7],[8],[18]                
Investment, Identifier [Axis]: DFC Global Facility Borrower III LLC, First lien senior secured revolving loan, Secured borrowing                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.76%   12.76%   11.62% 12.76% 12.76% 12.76% 12.76% 11.62% 11.62% 11.62% 11.62%
Investment, Identifier [Axis]: DFS Holding Company, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments $ 0.4   $ 0.4                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 0.4   0.4                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.4   $ 0.4                    
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.20%   12.20%     12.20% 12.20% 12.20% 12.20%        
Total first lien senior secured loans [3],[4] $ 2.0   $ 2.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 1.9   1.9                    
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.44%         9.44% 9.44% 9.44% 9.44%
Total first lien senior secured loans [6],[7]         $ 164.9                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 164.9                
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.38%         10.38% 10.38% 10.38% 10.38%
Total first lien senior secured loans [6],[7]         $ 6.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 6.5                
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.38%         10.38% 10.38% 10.38% 10.38%
Total first lien senior secured loans [6],[7]         $ 4.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         4.3                
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 10.8   10.8   10.8                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 10.8   10.8   10.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 10.8   10.8   10.8                
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.1 [4]   $ 6.1 [4]   $ 7.2 [7]                
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.45% [1]   11.45% [1]   10.47% [2] 11.45% [1] 11.45% [1] 11.45% [1] 11.45% [1] 10.47% [2] 10.47% [2] 10.47% [2] 10.47% [2]
Total first lien senior secured loans $ 1.1 [3],[4]   $ 1.1 [3],[4]   $ 28.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.0 [3],[4]   $ 1.0 [3],[4]   $ 26.8 [6],[7]                
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.47% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.47% [2] 10.47% [2] 10.47% [2] 10.47% [2]
Total first lien senior secured loans $ 26.7 [3],[4]   $ 26.7 [3],[4]   $ 25.8 [6]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 25.1 [3],[4]   $ 25.1 [3],[4]   24.8 [6]                
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.45%   11.45%     11.45% 11.45% 11.45% 11.45%        
Total first lien senior secured loans [3],[4] $ 1.1   $ 1.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.0   $ 1.0                    
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.64%   11.64%     11.64% 11.64% 11.64% 11.64%        
Total first lien senior secured loans [3],[4] $ 24.6   $ 24.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 23.1   23.1                    
Investment, Identifier [Axis]: DS Admiral Bidco, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.1   0.1   0.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.1   0.1   0.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.1   $ 0.1   $ 0.1                
Investment, Identifier [Axis]: DS Admiral Bidco, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.74% [1]   11.74% [1]   10.16% [2] 11.74% [1] 11.74% [1] 11.74% [1] 11.74% [1] 10.16% [2] 10.16% [2] 10.16% [2] 10.16% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., Class A common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 6.4 [4]   6.4 [4]   6.3 [7]                
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., Class B common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [4]   $ 0.0 [4]   $ 0.0 [7]                
Investment, Identifier [Axis]: Datix Bidco Limited, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.53% [1]   9.53% [1]   8.95% [2] 9.53% [1] 9.53% [1] 9.53% [1] 9.53% [1] 8.95% [2] 8.95% [2] 8.95% [2] 8.95% [2]
Total first lien senior secured loans $ 4.3 [4],[5]   $ 4.3 [4],[5]   $ 4.3 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.2 [4],[5]   $ 4.2 [4],[5]   $ 4.2 [7],[8]                
Investment, Identifier [Axis]: Datix Bidco Limited, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.78% [1]   12.78% [1]   12.20% [2] 12.78% [1] 12.78% [1] 12.78% [1] 12.78% [1] 12.20% [2] 12.20% [2] 12.20% [2] 12.20% [2]
Total first lien senior secured loans $ 0.7 [4],[5]   $ 0.7 [4],[5]   $ 0.7 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.7 [4],[5]   $ 0.7 [4],[5]   $ 0.7 [7],[8]                
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         8.70%         8.70% 8.70% 8.70% 8.70%
Total first lien senior secured loans [7]         $ 1.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 0.9                
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.26% [1]   12.26% [1]   11.70% [2] 12.26% [1] 12.26% [1] 12.26% [1] 12.26% [1] 11.70% [2] 11.70% [2] 11.70% [2] 11.70% [2]
Total first lien senior secured loans $ 11.0 [4]   $ 11.0 [4]   $ 11.0 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 10.9 [4]   10.9 [4]   10.7 [7]                
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Series A preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 143.3 [4]   143.3 [4]   134.6 [7]                
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Series A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 10.8 [4]   10.8 [4]   12.5 [7]                
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 16.5   16.5   16.5                
Less: funded commitments (3.8)   (3.8)   (6.6)                
Total unfunded commitments 12.7   12.7   9.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 12.7   12.7   9.9                
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 9.8 [4]   $ 9.8 [4]   $ 9.4 [7]                
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.39% [1]   11.39% [1]   10.73% [2] 11.39% [1] 11.39% [1] 11.39% [1] 11.39% [1] 10.73% [2] 10.73% [2] 10.73% [2] 10.73% [2]
Total first lien senior secured loans $ 147.8 [3],[4]   $ 147.8 [3],[4]   $ 148.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 146.3 [3],[4]   $ 146.3 [3],[4]   $ 145.6 [6],[7]                
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.20% [1]   11.20% [1]   10.73% [2] 11.20% [1] 11.20% [1] 11.20% [1] 11.20% [1] 10.73% [2] 10.73% [2] 10.73% [2] 10.73% [2]
Total first lien senior secured loans $ 3.8 [3],[4]   $ 3.8 [3],[4]   $ 6.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.7 [3],[4]   3.7 [3],[4]   6.5 [6],[7]                
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 11.4   11.4   11.4                
Less: funded commitments (2.9)   (2.9)   0.0                
Total unfunded commitments 8.5   8.5   11.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 8.5   8.5   11.4                
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.1 [4]   $ 2.1 [4]   $ 2.4 [7]                
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.55% [1]   11.55% [1]   10.52% [2] 11.55% [1] 11.55% [1] 11.55% [1] 11.55% [1] 10.52% [2] 10.52% [2] 10.52% [2] 10.52% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.55% [1]   11.55% [1]   10.52% [2] 11.55% [1] 11.55% [1] 11.55% [1] 11.55% [1] 10.52% [2] 10.52% [2] 10.52% [2] 10.52% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.51%   11.51%     11.51% 11.51% 11.51% 11.51%        
Total first lien senior secured loans [3],[4] $ 1.8   $ 1.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.8   $ 1.8                    
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.25%   13.25%     13.25% 13.25% 13.25% 13.25%        
Total first lien senior secured loans [3],[4] $ 1.1   $ 1.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 1.1   1.1                    
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.2   2.2   2.2                
Less: funded commitments (1.1)   (1.1)   (0.7)                
Total unfunded commitments 1.1   1.1   1.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.1   $ 1.1   $ 1.5                
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.45% [1]   11.45% [1]   10.63% [2] 11.45% [1] 11.45% [1] 11.45% [1] 11.45% [1] 10.63% [2] 10.63% [2] 10.63% [2] 10.63% [2]
Total first lien senior secured loans $ 14.8 [3],[4]   $ 14.8 [3],[4]   $ 35.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 14.5 [3],[4]   $ 14.5 [3],[4]   $ 35.2 [6],[7]                
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.95% [1]   10.95% [1]   10.63% [2] 10.95% [1] 10.95% [1] 10.95% [1] 10.95% [1] 10.63% [2] 10.63% [2] 10.63% [2] 10.63% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 2.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 2.0 [6],[7]                
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.95% [1]   10.95% [1]   10.13% [2] 10.95% [1] 10.95% [1] 10.95% [1] 10.95% [1] 10.13% [2] 10.13% [2] 10.13% [2] 10.13% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.45% [1]   11.45% [1]   10.13% [2] 11.45% [1] 11.45% [1] 11.45% [1] 11.45% [1] 10.13% [2] 10.13% [2] 10.13% [2] 10.13% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.45% [1]   11.45% [1]   10.63% [2] 11.45% [1] 11.45% [1] 11.45% [1] 11.45% [1] 10.63% [2] 10.63% [2] 10.63% [2] 10.63% [2]
Total first lien senior secured loans $ 1.1 [3],[4]   $ 1.1 [3],[4]   $ 0.7 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.0 [3],[4]   1.0 [3],[4]   0.7 [6],[7],[14]                
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., Preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 14.5 [4]   14.5 [4]   13.8 [7]                
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.3   2.3   2.3                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.3   2.3   2.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 2.3   2.3   2.3                
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.4 [4]   $ 1.4 [4]   $ 1.2 [7]                
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.85% [1]   10.85% [1]   10.03% [2] 10.85% [1] 10.85% [1] 10.85% [1] 10.85% [1] 10.03% [2] 10.03% [2] 10.03% [2] 10.03% [2]
Total first lien senior secured loans $ 15.6 [3],[4]   $ 15.6 [3],[4]   $ 15.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 15.6 [3],[4]   $ 15.6 [3],[4]   $ 15.8 [6],[7]                
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.85% [1]   10.85% [1]   10.03% [2] 10.85% [1] 10.85% [1] 10.85% [1] 10.85% [1] 10.03% [2] 10.03% [2] 10.03% [2] 10.03% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.85% [1]   10.85% [1]   10.03% [2] 10.85% [1] 10.85% [1] 10.85% [1] 10.85% [1] 10.03% [2] 10.03% [2] 10.03% [2] 10.03% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: Drilling Info Holdings, Inc. and Titan DI Preferred Holdings, Inc., Preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 43.9 [4]   $ 43.9 [4]   $ 41.6 [7]                
Investment, Identifier [Axis]: Drilling Info Holdings, Inc. and Titan DI Preferred Holdings, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.45% [1]   13.45% [1]   12.63% [2] 13.45% [1] 13.45% [1] 13.45% [1] 13.45% [1] 12.63% [2] 12.63% [2] 12.63% [2] 12.63% [2]
Total first lien senior secured loans $ 25.0 [4]   $ 25.0 [4]   $ 25.0 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 25.0 [4]   25.0 [4]   24.8 [7]                
Investment, Identifier [Axis]: Dye & Durham Corporation                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.9   12.9   18.2                
Less: funded commitments (7.0)   (7.0)   (5.0)                
Total unfunded commitments 5.9   5.9   13.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 5.9   $ 5.9   $ 13.2                
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.88% [1]   10.88% [1]   10.69% [2] 10.88% [1] 10.88% [1] 10.88% [1] 10.88% [1] 10.69% [2] 10.69% [2] 10.69% [2] 10.69% [2]
Total first lien senior secured loans $ 5.8 [3],[4],[5]   $ 5.8 [3],[4],[5]   $ 40.0 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.8 [3],[4],[5]   $ 5.8 [3],[4],[5]   $ 40.0 [6],[7],[8]                
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.20%         11.20% 11.20% 11.20% 11.20%
Total first lien senior secured loans [6],[7],[8]         $ 5.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[8]         5.0                
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.15%   11.15%     11.15% 11.15% 11.15% 11.15%        
Total first lien senior secured loans [3],[4],[5] $ 5.0   $ 5.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 5.1   $ 5.1                    
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.94%   10.94%     10.94% 10.94% 10.94% 10.94%        
Total first lien senior secured loans [3],[4],[5] $ 1.9   $ 1.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 1.9   1.9                    
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.1   7.1   7.1                
Less: funded commitments (0.3)   (0.3)   0.0                
Total unfunded commitments 6.8   6.8   7.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 6.8   6.8   7.1                
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 8.6   $ 8.6   $ 9.0                
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.04% [1]   12.04% [1]   11.65% [2] 12.04% [1] 12.04% [1] 12.04% [1] 12.04% [1] 11.65% [2] 11.65% [2] 11.65% [2] 11.65% [2]
Total first lien senior secured loans $ 21.9 [3],[4]   $ 21.9 [3],[4]   $ 23.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 21.9 [3],[4]   $ 21.9 [3],[4]   23.2 [6],[7]                
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.40%   12.40%     12.40% 12.40% 12.40% 12.40%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.3   $ 0.3                    
Investment, Identifier [Axis]: EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.00%   10.00%     10.00% 10.00% 10.00% 10.00%        
Total first lien senior secured loans [3],[4] $ 8.5   $ 8.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 8.1   8.1                    
Investment, Identifier [Axis]: EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P., Partnership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 12.1 [4],[5]   $ 12.1 [4],[5]   $ 11.7 [7],[8]                
Investment, Identifier [Axis]: EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.00% [1]   12.00% [1]   11.23% [2] 12.00% [1] 12.00% [1] 12.00% [1] 12.00% [1] 11.23% [2] 11.23% [2] 11.23% [2] 11.23% [2]
Total first lien senior secured loans $ 177.9 [3],[4]   $ 177.9 [3],[4]   $ 177.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 172.6 [3],[4]   172.6 [3],[4]   176.1 [6],[7]                
Investment, Identifier [Axis]: EP Wealth Advisors, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 10.0   10.0   14.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 10.0   10.0   14.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 10.0   $ 10.0   $ 14.1                
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.77% [1]   10.77% [1]   10.01% [2] 10.77% [1] 10.77% [1] 10.77% [1] 10.77% [1] 10.01% [2] 10.01% [2] 10.01% [2] 10.01% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 5.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 5.6 [6],[7]                
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.89% [1]   10.89% [1]   10.23% [2] 10.89% [1] 10.89% [1] 10.89% [1] 10.89% [1] 10.23% [2] 10.23% [2] 10.23% [2] 10.23% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.4 [6],[7]                
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.89% [1]   10.89% [1]   10.23% [2] 10.89% [1] 10.89% [1] 10.89% [1] 10.89% [1] 10.23% [2] 10.23% [2] 10.23% [2] 10.23% [2]
Total first lien senior secured loans $ 0.4 [3],[4]   $ 0.4 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.4 [3],[4]   $ 0.4 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.11% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.11% [2] 10.11% [2] 10.11% [2] 10.11% [2]
Total first lien senior secured loans $ 4.2 [3],[4]   $ 4.2 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.2 [3],[4]   4.2 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: EPS NASS Parent, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.4   1.4   1.5                
Less: funded commitments (1.2)   (1.2)   (0.8)                
Total unfunded commitments 0.2   0.2   0.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.2   $ 0.2   $ 0.7                
Investment, Identifier [Axis]: EPS NASS Parent, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.48% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.2 [6],[7]                
Investment, Identifier [Axis]: EPS NASS Parent, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.48% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 1.2 [3],[4]   $ 1.2 [3],[4]   $ 0.8 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.2 [3],[4]   1.2 [3],[4]   0.8 [6],[7],[14]                
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   2.3                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     2.6   (1.9)                
Fair Value 5.7   5.7   3.1                
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC, Class A-1 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 5.5 [4]   5.5 [4]   3.0 [7]                
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC, Class A-2 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [4]   0.2 [4]   0.1 [7]                
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.1   1.1   1.1                
Less: funded commitments (0.2)   (0.2)   0.0                
Total unfunded commitments 0.9   0.9   1.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.9   $ 0.9   $ 1.1                
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.16% [1]   11.16% [1]   10.07% [2] 11.16% [1] 11.16% [1] 11.16% [1] 11.16% [1] 10.07% [2] 10.07% [2] 10.07% [2] 10.07% [2]
Total first lien senior secured loans $ 6.8 [3],[4]   $ 6.8 [3],[4]   $ 6.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.7 [3],[4]   $ 6.7 [3],[4]   6.7 [6],[7]                
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.59%   11.59%     11.59% 11.59% 11.59% 11.59%        
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.2   0.2                    
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P., Limited partner interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 7.5   $ 7.5   6.0                
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Senior subordinated loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.27%   13.27%     13.27% 13.27% 13.27% 13.27%        
Total first lien senior secured loans [3],[4],[5] $ 44.4   $ 44.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 41.8   41.8                    
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Senior subordinated loan 2                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [4],[5] 22.5   22.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[5] 22.3   22.3                    
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Senior subordinated loan 3                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [4],[5] 4.7   4.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[5] 4.7   4.7                    
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Warrant to purchase shares of ordinary shares 1                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[5] 3.5   3.5                    
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Warrant to purchase shares of ordinary shares 2                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[5] 0.6   0.6                    
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Warrant to purchase shares of ordinary shares 3                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[5] 0.0   0.0                    
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited, Senior subordinated loan 1                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [7],[8]         25.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[8]         $ 23.9                
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited, Senior subordinated loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.30%         12.30% 12.30% 12.30% 12.30%
Total first lien senior secured loans [7],[8]         $ 41.7                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[8]         40.5                
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   8.8                
Redemptions (cost)     0.0   57.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   (57.0)                
Net unrealized gains (losses):     0.0   25.1                
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: Eckler Purchaser LLC, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.1   4.1   4.1                
Less: funded commitments (4.1)   (4.1)   (4.1)                
Total unfunded commitments 0.0   0.0   0.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.0   $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.54% [1]   11.54% [1]   10.74% [2] 11.54% [1] 11.54% [1] 11.54% [1] 11.54% [1] 10.74% [2] 10.74% [2] 10.74% [2] 10.74% [2]
Total first lien senior secured loans $ 61.0 [3]   $ 61.0 [3]   $ 50.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 59.2 [3]   $ 59.2 [3]   $ 48.5 [6],[7]                
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.54% [1]   11.54% [1]   10.68% [2] 11.54% [1] 11.54% [1] 11.54% [1] 11.54% [1] 10.68% [2] 10.68% [2] 10.68% [2] 10.68% [2]
Total first lien senior secured loans $ 5.6 [3],[4]   $ 5.6 [3],[4]   $ 11.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.4 [3],[4]   $ 5.4 [3],[4]   $ 11.0 [6],[7]                
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.00% [1]   11.00% [1]   10.68% [2] 11.00% [1] 11.00% [1] 11.00% [1] 11.00% [1] 10.68% [2] 10.68% [2] 10.68% [2] 10.68% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 5.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 5.6 [6],[7]                
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.51%         10.51% 10.51% 10.51% 10.51%
Total first lien senior secured loans [6],[7]         $ 4.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         4.0                
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.84%   10.84%     10.84% 10.84% 10.84% 10.84%        
Total first lien senior secured loans [3],[4] $ 3.4   $ 3.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 3.3   $ 3.3                    
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.69%   10.69%     10.69% 10.69% 10.69% 10.69%        
Total first lien senior secured loans $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.7   0.7                    
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., Preferred equity                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 6.0 [4]   6.0 [4]   5.3 [7]                
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 17.1   17.1   17.1                
Less: funded commitments (2.0)   (2.0)   (1.5)                
Total unfunded commitments 15.1   15.1   15.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 15.1   $ 15.1   $ 15.6                
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.61% [1]   11.61% [1]   10.86% [2] 11.61% [1] 11.61% [1] 11.61% [1] 11.61% [1] 10.86% [2] 10.86% [2] 10.86% [2] 10.86% [2]
Total first lien senior secured loans $ 8.6 [3],[4]   $ 8.6 [3],[4]   $ 10.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 8.2 [3],[4]   $ 8.2 [3],[4]   $ 10.0 [6],[7]                
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.35% [1]   11.35% [1]   9.47% [2] 11.35% [1] 11.35% [1] 11.35% [1] 11.35% [1] 9.47% [2] 9.47% [2] 9.47% [2] 9.47% [2]
Total first lien senior secured loans $ 1.5 [3],[4]   $ 1.5 [3],[4]   $ 9.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.5 [3],[4]   $ 1.5 [3],[4]   $ 9.0 [6],[7]                
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.35%   11.35%     11.35% 11.35% 11.35% 11.35%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.1   $ 0.1                    
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.39%   11.39%     11.39% 11.39% 11.39% 11.39%        
Total first lien senior secured loans [3],[4] $ 8.8   $ 8.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 8.5   $ 8.5                    
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.52%   11.52%     11.52% 11.52% 11.52% 11.52%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.3   $ 0.3                    
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.36%         10.36% 10.36% 10.36% 10.36%
Total first lien senior secured loans [6],[7],[14]         $ 1.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[14]         1.4                
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.62%   11.62%     11.62% 11.62% 11.62% 11.62%        
Total first lien senior secured loans [3],[4],[13] $ 1.2   $ 1.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[13] $ 1.1   $ 1.1                    
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.40%   11.40%     11.40% 11.40% 11.40% 11.40%        
Total first lien senior secured loans [3],[4],[13] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[13] 0.7   0.7                    
Investment, Identifier [Axis]: Emergency Communications Network, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.0   7.0   6.8                
Less: funded commitments (7.0)   (7.0)   (6.8)                
Total unfunded commitments 0.0   0.0   0.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.0   $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Emergency Communications Network, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon 12.80% [1]   12.80% [1]   11.84% [2] 12.80% [1] 12.80% [1] 12.80% [1] 12.80% [1] 11.84% [2] 11.84% [2] 11.84% [2] 11.84% [2]
Total first lien senior secured loans $ 49.7 [3],[4]   $ 49.7 [3],[4]   $ 48.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 44.7 [3],[4]   $ 44.7 [3],[4]   $ 43.6 [6],[7]                
Investment, Identifier [Axis]: Emergency Communications Network, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon 13.03% [1]   13.03% [1]   12.15% [2] 13.03% [1] 13.03% [1] 13.03% [1] 13.03% [1] 12.15% [2] 12.15% [2] 12.15% [2] 12.15% [2]
Total first lien senior secured loans $ 7.0 [3],[4]   $ 7.0 [3],[4]   $ 6.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 6.3 [3],[4]   6.3 [3],[4]   $ 6.1 [6],[7]                
Investment, Identifier [Axis]: Ensemble RCM, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.19%         9.19% 9.19% 9.19% 9.19%
Total first lien senior secured loans [6],[7]         $ 2.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         2.5                
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 14.4   14.4   14.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 14.4   14.4   14.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 14.4   $ 14.4   $ 14.5                
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.89% [1]   10.89% [1]   6.69% [2] 10.89% [1] 10.89% [1] 10.89% [1] 10.89% [1] 6.69% [2] 6.69% [2] 6.69% [2] 6.69% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 5.6 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 5.5 [7],[8]                
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.30% [1]   9.30% [1]   9.98% [2] 9.30% [1] 9.30% [1] 9.30% [1] 9.30% [1] 9.98% [2] 9.98% [2] 9.98% [2] 9.98% [2]
Total first lien senior secured loans $ 5.7 [4],[5]   $ 5.7 [4],[5]   $ 0.1 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.5 [4],[5]   $ 5.5 [4],[5]   $ 0.1 [6],[7],[8]                
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.89% [1]   10.89% [1]   9.98% [2] 10.89% [1] 10.89% [1] 10.89% [1] 10.89% [1] 9.98% [2] 9.98% [2] 9.98% [2] 9.98% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4],[5]   0.1 [3],[4],[5]   0.1 [6],[7],[8]                
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 28.0   28.0   28.0                
Less: funded commitments (20.0)   (20.0)   (6.2)                
Total unfunded commitments 8.0   8.0   21.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 8.0   8.0   21.8                
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 42.1 [4]   $ 42.1 [4]   $ 42.0 [7]                
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.93% [1]   10.93% [1]   9.49% [2] 10.93% [1] 10.93% [1] 10.93% [1] 10.93% [1] 9.49% [2] 9.49% [2] 9.49% [2] 9.49% [2]
Total first lien senior secured loans $ 48.0 [3],[4]   $ 48.0 [3],[4]   $ 78.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 47.0 [3],[4]   $ 47.0 [3],[4]   $ 76.5 [6],[7]                
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.93% [1]   10.93% [1]   9.49% [2] 10.93% [1] 10.93% [1] 10.93% [1] 10.93% [1] 9.49% [2] 9.49% [2] 9.49% [2] 9.49% [2]
Total first lien senior secured loans $ 77.7 [3],[4]   $ 77.7 [3],[4]   $ 48.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 76.2 [3],[4]   $ 76.2 [3],[4]   $ 47.2 [6],[7]                
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.93% [1]   10.93% [1]   9.71% [2] 10.93% [1] 10.93% [1] 10.93% [1] 10.93% [1] 9.71% [2] 9.71% [2] 9.71% [2] 9.71% [2]
Total first lien senior secured loans $ 25.1 [3],[4]   $ 25.1 [3],[4]   $ 19.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 24.6 [3],[4]   $ 24.6 [3],[4]   $ 19.2 [6],[7]                
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         14.94%         14.94% 14.94% 14.94% 14.94%
Total first lien senior secured loans [6],[7]         $ 5.6                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         5.5                
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.95%   10.95%     10.95% 10.95% 10.95% 10.95%        
Total first lien senior secured loans $ 11.2 [3],[4],[13]   $ 11.2 [3],[4],[13]   0.0 [15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 11.0 [3],[4],[13]   11.0 [3],[4],[13]   0.0 [15]                
Investment, Identifier [Axis]: European Capital UK SME Debt LP                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   0.0                
Redemptions (cost)     9.8   0.8                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     5.8   2.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     (0.6)   0.4                
Fair Value 16.1   16.1   26.5                
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 57.1   57.1   54.3                
Less: funded commitments (51.7)   (51.7)   (49.1)                
Total unfunded commitments 5.4   5.4   5.2                
Less: commitments substantially at discretion of the Company 5.4   5.4   5.2                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.0   0.0   0.0                
Investment, Identifier [Axis]: European Capital UK SME Debt LP, Limited partnership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 16.1 [5]   16.1 [5]   26.5 [8]                
Investment, Identifier [Axis]: Everspin Technologies, Inc., Warrant to purchase shares of common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0   $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Evolent Health LLC and Evolent Health, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.39%   11.39%     11.39% 11.39% 11.39% 11.39%        
Total first lien senior secured loans [3],[4],[5] $ 7.8   $ 7.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 7.8   $ 7.8                    
Investment, Identifier [Axis]: Evolent Health LLC and Evolent Health, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.39%   11.39%     11.39% 11.39% 11.39% 11.39%        
Total first lien senior secured loans [3],[4],[5] $ 34.0   $ 34.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 34.0   $ 34.0                    
Investment, Identifier [Axis]: Evolent Health LLC and Evolent Health, Inc., Series A preferred shares                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.42%   11.42%     11.42% 11.42% 11.42% 11.42%        
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 4.4   $ 4.4                    
Investment, Identifier [Axis]: Evolent Health LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.23%         10.23% 10.23% 10.23% 10.23%
Total first lien senior secured loans [6],[7],[8]         $ 7.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[8]         $ 7.7                
Investment, Identifier [Axis]: Excelligence Holdings Corp., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.39% [1]   11.39% [1]   10.73% [2] 11.39% [1] 11.39% [1] 11.39% [1] 11.39% [1] 10.73% [2] 10.73% [2] 10.73% [2] 10.73% [2]
Total first lien senior secured loans $ 9.2 [3],[4]   $ 9.2 [3],[4]   $ 9.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 9.2 [3],[4]   9.2 [3],[4]   9.2 [6],[7]                
Investment, Identifier [Axis]: Explorer Investor, Inc                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         0.2                
Less: funded commitments         0.0                
Total unfunded commitments         0.2                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 0.2                
Investment, Identifier [Axis]: Explorer Investor, Inc, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.15%         10.15% 10.15% 10.15% 10.15%
Total first lien senior secured loans [6],[7]         $ 1.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.9                
Investment, Identifier [Axis]: Extrahop Networks, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.4   12.4   5.9                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 12.4   12.4   5.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 12.4   $ 12.4   $ 5.9                
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.23%         12.23% 12.23% 12.23% 12.23%
Total first lien senior secured loans [6],[7]         $ 20.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         20.2                
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.70%   12.70%     12.70% 12.70% 12.70% 12.70%        
Total first lien senior secured loans [3],[4] $ 21.5   $ 21.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 21.5   $ 21.5                    
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.70%   12.70%     12.70% 12.70% 12.70% 12.70%        
Total first lien senior secured loans [3],[4] $ 3.9   $ 3.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 3.9   3.9                    
Investment, Identifier [Axis]: FL Hawk Intermediate Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.5   0.5   0.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.5   0.5   0.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.5   0.5   0.5                
Investment, Identifier [Axis]: FM:Systems Group, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.5   1.5   1.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 1.5   1.5   1.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.5   $ 1.5   $ 1.5                
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.45% [1]   10.45% [1]   9.13% [2] 10.45% [1] 10.45% [1] 10.45% [1] 10.45% [1] 9.13% [2] 9.13% [2] 9.13% [2] 9.13% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.45% [1]   10.45% [1]   10.96% [2] 10.45% [1] 10.45% [1] 10.45% [1] 10.45% [1] 10.96% [2] 10.96% [2] 10.96% [2] 10.96% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 9.6   9.6   9.6                
Less: funded commitments (0.5)   (0.5)   (0.5)                
Total unfunded commitments 9.1   9.1   9.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 9.1   9.1   9.1                
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 37.4 [4]   $ 37.4 [4]   $ 31.2 [7]                
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.45% [1]   10.45% [1]   9.49% [2] 10.45% [1] 10.45% [1] 10.45% [1] 10.45% [1] 9.49% [2] 9.49% [2] 9.49% [2] 9.49% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 0.0 [16]   0.0 [16]   0.0 [15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [16]   0.0 [16]   0.0 [15]                
Investment, Identifier [Axis]: Faraday Buyer, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.1   1.1   4.7                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 1.1   1.1   4.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.1   $ 1.1   $ 4.7                
Investment, Identifier [Axis]: Faraday Buyer, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.32%         11.32% 11.32% 11.32% 11.32%
Total first lien senior secured loans [6],[7]         $ 52.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         50.6                
Investment, Identifier [Axis]: Faraday Buyer, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.86%   11.86%     11.86% 11.86% 11.86% 11.86%        
Total first lien senior secured loans [3],[4] $ 52.1   $ 52.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 52.1   $ 52.1                    
Investment, Identifier [Axis]: Faraday Buyer, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.04%   12.04%     12.04% 12.04% 12.04% 12.04%        
Total first lien senior secured loans [3],[4] $ 3.6   $ 3.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 3.6   3.6                    
Investment, Identifier [Axis]: Faraday&Future Inc., FF Inc., Faraday SPE, LLC and Faraday Future Intelligent Electric Inc., Warrant to purchase shares of Class A common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0 [7]                
Investment, Identifier [Axis]: Ferrellgas, L.P. and Ferrellgas Partners, L.P., Class B units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 12.6 [4]   $ 12.6 [4]   $ 14.9                
Investment, Identifier [Axis]: Ferrellgas, L.P. and Ferrellgas Partners, L.P., Senior preferred units                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.96% [1]   8.96% [1]   896.00% [2] 8.96% [1] 8.96% [1] 8.96% [1] 8.96% [1] 896.00% [2] 896.00% [2] 896.00% [2] 896.00% [2]
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 60.0   $ 60.0   $ 60.0                
Investment, Identifier [Axis]: First Insight, Inc., Warrant to purchase shares of Series C preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0   0.0                    
Investment, Identifier [Axis]: First Insight, Inc., Warrant to purchase units of Series C preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.0                
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 14.5   14.5   14.5                
Less: funded commitments (10.3)   (10.3)   (7.1)                
Total unfunded commitments 4.2   4.2   7.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 4.2   $ 4.2   $ 7.4                
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.00% [1]   11.00% [1]   9.88% [2] 11.00% [1] 11.00% [1] 11.00% [1] 11.00% [1] 9.88% [2] 9.88% [2] 9.88% [2] 9.88% [2]
Total first lien senior secured loans $ 29.4 [3],[4]   $ 29.4 [3],[4]   $ 29.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 29.4 [3],[4]   $ 29.4 [3],[4]   $ 29.6 [6],[7]                
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.00% [1]   11.00% [1]   9.88% [2] 11.00% [1] 11.00% [1] 11.00% [1] 11.00% [1] 9.88% [2] 9.88% [2] 9.88% [2] 9.88% [2]
Total first lien senior secured loans $ 1.1 [3],[4]   $ 1.1 [3],[4]   $ 1.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.1 [3],[4]   $ 1.1 [3],[4]   $ 1.1 [6],[7]                
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.72% [1]   10.72% [1]   9.88% [2] 10.72% [1] 10.72% [1] 10.72% [1] 10.72% [1] 9.88% [2] 9.88% [2] 9.88% [2] 9.88% [2]
Total first lien senior secured loans $ 6.6 [3],[4]   $ 6.6 [3],[4]   $ 6.5 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.6 [3],[4]   $ 6.6 [3],[4]   $ 6.5 [6],[7],[14]                
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.72% [1]   10.72% [1]   11.50% [2] 10.72% [1] 10.72% [1] 10.72% [1] 10.72% [1] 11.50% [2] 11.50% [2] 11.50% [2] 11.50% [2]
Total first lien senior secured loans $ 3.7 [3],[4]   $ 3.7 [3],[4]   $ 0.5 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.7 [3],[4]   3.7 [3],[4]   0.5 [6],[7],[14]                
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., Series A preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.4 [4]   $ 1.4 [4]   $ 1.5 [7]                
Investment, Identifier [Axis]: Florida Food Products, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.19% [1]   10.19% [1]   9.32% [2] 10.19% [1] 10.19% [1] 10.19% [1] 10.19% [1] 9.32% [2] 9.32% [2] 9.32% [2] 9.32% [2]
Total first lien senior secured loans $ 0.5 [3],[4]   $ 0.5 [3],[4]   $ 0.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.4 [3],[4]   $ 0.4 [3],[4]   $ 0.4 [6],[7]                
Investment, Identifier [Axis]: Florida Food Products, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.10% [1]   10.10% [1]   9.38% [2] 10.10% [1] 10.10% [1] 10.10% [1] 10.10% [1] 9.38% [2] 9.38% [2] 9.38% [2] 9.38% [2]
Total first lien senior secured loans $ 0.4 [3],[4]   $ 0.4 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.4 [3],[4]   $ 0.4 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Florida Food Products, LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.19% [1]   13.19% [1]   12.38% [2] 13.19% [1] 13.19% [1] 13.19% [1] 13.19% [1] 12.38% [2] 12.38% [2] 12.38% [2] 12.38% [2]
Total first lien senior secured loans $ 71.8 [3],[4]   $ 71.8 [3],[4]   $ 71.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 66.8 [3],[4]   66.8 [3],[4]   70.4 [6],[7]                
Investment, Identifier [Axis]: FlyWheel Acquireco, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 8.2   8.2                    
Less: funded commitments (5.5)   (5.5)                    
Total unfunded commitments 2.7   2.7                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.7   $ 2.7                    
Investment, Identifier [Axis]: FlyWheel Acquireco, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.60%   11.60%     11.60% 11.60% 11.60% 11.60%        
Total first lien senior secured loans [3],[4] $ 52.6   $ 52.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 51.6   $ 51.6                    
Investment, Identifier [Axis]: FlyWheel Acquireco, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.60%   11.60%     11.60% 11.60% 11.60% 11.60%        
Total first lien senior secured loans [3],[4] $ 5.5   $ 5.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 5.4   5.4                    
Investment, Identifier [Axis]: Forescout Technologies, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 16.0   16.0   14.2                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 16.0   16.0   14.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 16.0   $ 16.0   $ 14.2                
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon 15.04% [1]   15.04% [1]   14.23% [2] 15.04% [1] 15.04% [1] 15.04% [1] 15.04% [1] 14.23% [2] 14.23% [2] 14.23% [2] 14.23% [2]
Total first lien senior secured loans $ 24.5 [3],[4]   $ 24.5 [3],[4]   $ 23.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 24.5 [3],[4]   $ 24.5 [3],[4]   23.8 [6],[7]                
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon [1] 15.04%   15.04%     15.04% 15.04% 15.04% 15.04%        
Total first lien senior secured loans $ 0.4 [3],[4]   $ 0.4 [3],[4]   12.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.4 [3],[4]   $ 0.4 [3],[4]   $ 12.6 [6],[7]                
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon [1] 14.54%   14.54%     14.54% 14.54% 14.54% 14.54%        
Total first lien senior secured loans [3],[4] $ 13.2   $ 13.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 13.2   $ 13.2                    
Investment, Identifier [Axis]: Foundation Consumer Brands, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.15%         10.15% 10.15% 10.15% 10.15%
Total first lien senior secured loans [6],[7]         $ 12.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         12.8                
Investment, Identifier [Axis]: Foundation Consumer Brands, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.47%   11.47%     11.47% 11.47% 11.47% 11.47%        
Total first lien senior secured loans [3],[4] $ 13.6   $ 13.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 13.6   $ 13.6                    
Investment, Identifier [Axis]: Foundation Consumer Brands, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.64%   11.64%     11.64% 11.64% 11.64% 11.64%        
Total first lien senior secured loans [3],[4] $ 35.6   $ 35.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 35.6   35.6                    
Investment, Identifier [Axis]: Foundation Risk Partners, Corp.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 40.5   40.5   40.5                
Less: funded commitments 0.0   0.0   (8.6)                
Total unfunded commitments 40.5   40.5   31.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 40.5   $ 40.5   $ 31.9                
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.59% [1]   11.59% [1]   10.68% [2] 11.59% [1] 11.59% [1] 11.59% [1] 11.59% [1] 10.68% [2] 10.68% [2] 10.68% [2] 10.68% [2]
Total first lien senior secured loans $ 104.1 [3]   $ 104.1 [3]   $ 112.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 104.1 [3]   $ 104.1 [3]   $ 111.5 [6],[7]                
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.59% [1]   11.59% [1]   10.68% [2] 11.59% [1] 11.59% [1] 11.59% [1] 11.59% [1] 10.68% [2] 10.68% [2] 10.68% [2] 10.68% [2]
Total first lien senior secured loans $ 30.2 [3],[4]   $ 30.2 [3],[4]   $ 30.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 30.2 [3],[4]   30.2 [3],[4]   $ 30.0 [6],[7]                
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.68%         10.68% 10.68% 10.68% 10.68%
Total first lien senior secured loans [6],[7]         $ 1.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 1.1                
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.32%         10.32% 10.32% 10.32% 10.32%
Total first lien senior secured loans [6],[7]         $ 8.6                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         8.5                
Investment, Identifier [Axis]: GF Parent LLC, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: GF Parent LLC, Class A preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: GF Parent LLC, Class B common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.0                
Investment, Identifier [Axis]: GHX Ultimate Parent Corporation, Commerce Parent, Inc. and Commerce Topco, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         47.5                
Less: funded commitments         0.0                
Total unfunded commitments         47.5                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         47.5                
Investment, Identifier [Axis]: GHX Ultimate Parent Corporation, Commerce Parent, Inc. and Commerce Topco, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 30.3 [4]   $ 30.3 [4]   $ 27.8 [7]                
Investment, Identifier [Axis]: GHX Ultimate Parent Corporation, Commerce Parent, Inc. and Commerce Topco, LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.29% [1]   12.29% [1]   11.48% [2] 12.29% [1] 12.29% [1] 12.29% [1] 12.29% [1] 11.48% [2] 11.48% [2] 11.48% [2] 11.48% [2]
Total first lien senior secured loans $ 114.0 [3],[4]   $ 114.0 [3],[4]   $ 114.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 112.9 [3],[4]   112.9 [3],[4]   111.8 [6],[7]                
Investment, Identifier [Axis]: GI Ranger Intermediate LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 9.2   9.2   9.2                
Less: funded commitments (1.4)   (1.4)   (0.4)                
Total unfunded commitments 7.8   7.8   8.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 7.8   $ 7.8   $ 8.8                
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.73% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.73% [2] 10.73% [2] 10.73% [2] 10.73% [2]
Total first lien senior secured loans $ 10.1 [3],[4]   $ 10.1 [3],[4]   $ 10.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 9.9 [3],[4]   $ 9.9 [3],[4]   $ 10.0 [6],[7]                
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.73% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.73% [2] 10.73% [2] 10.73% [2] 10.73% [2]
Total first lien senior secured loans $ 1.8 [3],[4]   $ 1.8 [3],[4]   $ 1.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.7 [3],[4]   $ 1.7 [3],[4]   $ 1.7 [6],[7]                
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.73% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.73% [2] 10.73% [2] 10.73% [2] 10.73% [2]
Total first lien senior secured loans $ 1.4 [3],[4]   $ 1.4 [3],[4]   $ 0.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.4 [3],[4]   1.4 [3],[4]   0.4 [6],[7]                
Investment, Identifier [Axis]: GNZ Energy Bidco Limited and Galileo Co-investment Trust I                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.0   3.0   3.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 3.0   3.0   3.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.0   3.0   3.1                
Investment, Identifier [Axis]: GNZ Energy Bidco Limited and Galileo Co-investment Trust I, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 11.6 [4],[5]   $ 11.6 [4],[5]   $ 8.7 [7],[8]                
Investment, Identifier [Axis]: GNZ Energy Bidco Limited and Galileo Co-investment Trust I, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.40% [1]   12.40% [1]   10.65% [2] 12.40% [1] 12.40% [1] 12.40% [1] 12.40% [1] 10.65% [2] 10.65% [2] 10.65% [2] 10.65% [2]
Total first lien senior secured loans $ 29.8 [3],[4],[5]   $ 29.8 [3],[4],[5]   $ 30.8 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 29.8 [3],[4],[5]   29.8 [3],[4],[5]   30.8 [6],[7],[8]                
Investment, Identifier [Axis]: GPM Investments, LLC and ARKO Corp., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 16.6 [11]   16.6 [11]   26.1                
Investment, Identifier [Axis]: GPM Investments, LLC and ARKO Corp., Warrant to purchase common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[11] 1.6   1.6                    
Investment, Identifier [Axis]: GPM Investments, LLC and ARKO Corp., Warrant to purchase units of common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         1.9                
Investment, Identifier [Axis]: GS SEER Group Borrower LLC and GS SEER Group Holdings LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 10.9   10.9                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 10.9   10.9                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 10.9   10.9                    
Investment, Identifier [Axis]: GS SEER Group Borrower LLC and GS SEER Group Holdings LLC, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 4.4   $ 4.4                    
Investment, Identifier [Axis]: GS SEER Group Borrower LLC and GS SEER Group Holdings LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.80%   11.80%     11.80% 11.80% 11.80% 11.80%        
Total first lien senior secured loans [3],[4] $ 18.2   $ 18.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 17.7   17.7                    
Investment, Identifier [Axis]: GSV PracticeTek Holdings, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 8.8 [4]   8.8 [4]   14.0 [7]                
Investment, Identifier [Axis]: Galway Borrower LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 9.8   9.8   9.8                
Less: funded commitments (0.4)   (0.4)   (0.4)                
Total unfunded commitments 9.4   9.4   9.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 9.4   $ 9.4   $ 9.4                
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.59% [1]   10.59% [1]   9.98% [2] 10.59% [1] 10.59% [1] 10.59% [1] 10.59% [1] 9.98% [2] 9.98% [2] 9.98% [2] 9.98% [2]
Total first lien senior secured loans $ 34.0 [3],[4]   $ 34.0 [3],[4]   $ 34.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 33.0 [3],[4]   33.0 [3],[4]   32.8 [6],[7]                
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 0.0 [16]   0.0 [16]   0.0 [15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [16]   0.0 [16]   0.0 [15]                
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.5   1.5   1.5                
Less: funded commitments (1.5)   (1.5)   (1.5)                
Total unfunded commitments 0.0   0.0   0.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.0   0.0   0.0                
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Class A common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.3 [4]   $ 1.3 [4]   $ 1.4 [7]                
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.99% [1]   8.99% [1]   7.92% [2] 8.99% [1] 8.99% [1] 8.99% [1] 8.99% [1] 7.92% [2] 7.92% [2] 7.92% [2] 7.92% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.2 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.2 [7]                
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.46% [1]   9.46% [1]   8.42% [2] 9.46% [1] 9.46% [1] 9.46% [1] 9.46% [1] 8.42% [2] 8.42% [2] 8.42% [2] 8.42% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.96% [1]   8.96% [1]   7.92% [2] 8.96% [1] 8.96% [1] 8.96% [1] 8.96% [1] 7.92% [2] 7.92% [2] 7.92% [2] 7.92% [2]
Total first lien senior secured loans $ 1.5 [3],[4]   $ 1.5 [3],[4]   $ 1.5 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.5 [3],[4]   $ 1.5 [3],[4]   $ 1.5 [7]                
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.77% [1]   12.77% [1]   11.24% [2] 12.77% [1] 12.77% [1] 12.77% [1] 12.77% [1] 11.24% [2] 11.24% [2] 11.24% [2] 11.24% [2]
Total first lien senior secured loans $ 32.4 [3],[4]   $ 32.4 [3],[4]   $ 32.4 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 32.4 [3],[4]   $ 32.4 [3],[4]   $ 31.7 [7]                
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.77% [1]   12.77% [1]   11.24% [2] 12.77% [1] 12.77% [1] 12.77% [1] 12.77% [1] 11.24% [2] 11.24% [2] 11.24% [2] 11.24% [2]
Total first lien senior secured loans $ 7.5 [3],[4]   $ 7.5 [3],[4]   $ 21.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 7.5 [3],[4]   $ 7.5 [3],[4]   $ 20.7 [6],[7]                
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.77% [1]   12.77% [1]   11.24% [2] 12.77% [1] 12.77% [1] 12.77% [1] 12.77% [1] 11.24% [2] 11.24% [2] 11.24% [2] 11.24% [2]
Total first lien senior secured loans $ 21.1 [3],[4]   $ 21.1 [3],[4]   $ 7.5 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 21.1 [3],[4]   $ 21.1 [3],[4]   7.4 [7]                
Investment, Identifier [Axis]: Genomatica, Inc., Warrant to purchase shares of Series D preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         $ 0.0                
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.44% [1]   9.44% [1]   8.63% [2] 9.44% [1] 9.44% [1] 9.44% [1] 9.44% [1] 8.63% [2] 8.63% [2] 8.63% [2] 8.63% [2]
Total first lien senior secured loans $ 28.9 [3],[4],[11]   $ 28.9 [3],[4],[11]   $ 12.1 [6],[7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 16.1 [3],[4],[11]   $ 16.1 [3],[4],[11]   $ 8.5 [6],[7],[12]                
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.47% [1]   9.47% [1]   8.42% [2] 9.47% [1] 9.47% [1] 9.47% [1] 9.47% [1] 8.42% [2] 8.42% [2] 8.42% [2] 8.42% [2]
Total first lien senior secured loans $ 12.4 [3],[4],[11]   $ 12.4 [3],[4],[11]   $ 25.7 [6],[7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.9 [3],[4],[11]   $ 6.9 [3],[4],[11]   $ 17.9 [6],[7],[12]                
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.85% [1]   11.85% [1]   11.10% [2] 11.85% [1] 11.85% [1] 11.85% [1] 11.85% [1] 11.10% [2] 11.10% [2] 11.10% [2] 11.10% [2]
Total first lien senior secured loans $ 95.4 [3],[4]   $ 95.4 [3],[4]   $ 95.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 54.4 [3],[4]   54.4 [3],[4]   71.6 [6],[7]                
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Warrant to purchase units of common stock 1                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.3 [4]   0.3 [4]   1.8 [7]                
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Warrant to purchase units of common stock 2                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0 [7]                
Investment, Identifier [Axis]: Global Music Rights, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.3   4.3   4.3                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 4.3   4.3   4.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 4.3   $ 4.3   $ 4.3                
Investment, Identifier [Axis]: Global Music Rights, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.66% [1]   10.66% [1]   10.23% [2] 10.66% [1] 10.66% [1] 10.66% [1] 10.66% [1] 10.23% [2] 10.23% [2] 10.23% [2] 10.23% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 16.8   16.8   33.8                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 16.8   16.8   33.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions (12.9)   (12.9)   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.9   $ 3.9   $ 33.8                
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.58% [1]   12.58% [1]   11.80% [2] 12.58% [1] 12.58% [1] 12.58% [1] 12.58% [1] 11.80% [2] 11.80% [2] 11.80% [2] 11.80% [2]
Total first lien senior secured loans $ 33.3 [3],[4]   $ 33.3 [3],[4]   $ 17.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 32.8 [3],[4]   32.8 [3],[4]   17.4 [6],[7]                
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, Series E-1 preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 14.2 [4]   14.2 [4]   14.2 [7]                
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, Warrant to purchase shares of Series E-1 preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.0   5.0   5.0                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 5.0   5.0   5.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 5.0   $ 5.0   $ 5.0                
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.21% [1]   11.21% [1]   10.73% [2] 11.21% [1] 11.21% [1] 11.21% [1] 11.21% [1] 10.73% [2] 10.73% [2] 10.73% [2] 10.73% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.2 [6],[7]                
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.82% [1]   10.82% [1]   10.23% [2] 10.82% [1] 10.82% [1] 10.82% [1] 10.82% [1] 10.23% [2] 10.23% [2] 10.23% [2] 10.23% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.71% [1]   10.71% [1]   10.23% [2] 10.71% [1] 10.71% [1] 10.71% [1] 10.71% [1] 10.23% [2] 10.23% [2] 10.23% [2] 10.23% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.71% [1]   10.71% [1]   10.43% [2] 10.71% [1] 10.71% [1] 10.71% [1] 10.71% [1] 10.43% [2] 10.43% [2] 10.43% [2] 10.43% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, Preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 65.6   65.6   57.5                
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 45.8 [4]   45.8 [4]   43.5 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 41.7 [4]   41.7 [4]   40.0 [7]                
Investment, Identifier [Axis]: GroundWorks, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.9   1.9                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 1.9   1.9                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.9   $ 1.9                    
Investment, Identifier [Axis]: GroundWorks, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.65%   11.65%     11.65% 11.65% 11.65% 11.65%        
Total first lien senior secured loans [3],[4] $ 10.0   $ 10.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 9.7   9.7                    
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.0   $ 5.0   $ 3.5                
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.58% [1]   10.58% [1]   8.07% [2] 10.58% [1] 10.58% [1] 10.58% [1] 10.58% [1] 8.07% [2] 8.07% [2] 8.07% [2] 8.07% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[11]   $ 0.1 [3],[4],[11]   $ 26.4 [7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4],[11]   $ 0.1 [3],[4],[11]   $ 23.3 [7],[12]                
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.27% [1]   9.27% [1]   8.38% [2] 9.27% [1] 9.27% [1] 9.27% [1] 9.27% [1] 8.38% [2] 8.38% [2] 8.38% [2] 8.38% [2]
Total first lien senior secured loans $ 26.2 [4],[11]   $ 26.2 [4],[11]   $ 3.3 [7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 23.0 [4],[11]   $ 23.0 [4],[11]   $ 3.0 [7],[12]                
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.58% [1]   9.58% [1]   9.38% [2] 9.58% [1] 9.58% [1] 9.58% [1] 9.58% [1] 9.38% [2] 9.38% [2] 9.38% [2] 9.38% [2]
Total first lien senior secured loans $ 3.3 [4],[11]   $ 3.3 [4],[11]   $ 0.1 [6],[7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.9 [4],[11]   $ 2.9 [4],[11]   $ 0.1 [6],[7],[12]                
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.58% [1]   12.58% [1]   11.38% [2] 12.58% [1] 12.58% [1] 12.58% [1] 12.58% [1] 11.38% [2] 11.38% [2] 11.38% [2] 11.38% [2]
Total first lien senior secured loans $ 73.0 [4]   $ 73.0 [4]   $ 73.0 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 62.8 [4]   62.8 [4]   62.8 [7]                
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         19.0                
Less: funded commitments         0.0                
Total unfunded commitments         19.0                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         19.0                
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 3.1                
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.42%         10.42% 10.42% 10.42% 10.42%
Total first lien senior secured loans [6],[7]         $ 60.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 60.5                
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.41%         11.41% 11.41% 11.41% 11.41%
Total first lien senior secured loans [6],[7]         $ 7.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 7.8                
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.42%         10.42% 10.42% 10.42% 10.42%
Total first lien senior secured loans [6],[7]         $ 0.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.1                
Investment, Identifier [Axis]: HCI Equity, LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   0.0                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     0.0   0.0                
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: HCI Equity, LLC, Member interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [5],[11]   0.0 [5],[11]   0.0 [8],[12]                
Investment, Identifier [Axis]: HGC Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.5   7.5   7.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 7.5   7.5   7.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 7.5   7.5   7.5                
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.4   4.4   14.8                
Less: funded commitments (3.1)   (3.1)   (2.8)                
Total unfunded commitments 1.3   1.3   12.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 1.3   1.3   12.0                
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.2 [4]   $ 2.2 [4]   $ 2.2 [7]                
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.19%         10.19% 10.19% 10.19% 10.19%
Total first lien senior secured loans [6],[7]         $ 5.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 5.7                
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.89%   10.89%     10.89% 10.89% 10.89% 10.89%        
Total first lien senior secured loans [3],[4] $ 7.8   $ 7.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 7.7   $ 7.7                    
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.88%   10.88%     10.88% 10.88% 10.88% 10.88%        
Total first lien senior secured loans [3],[4] $ 1.1   $ 1.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.1   $ 1.1                    
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.94% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.94% [2] 9.94% [2] 9.94% [2] 9.94% [2]
Total first lien senior secured loans $ 2.8 [3],[4],[13]   $ 2.8 [3],[4],[13]   $ 2.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.7 [3],[4],[13]   $ 2.7 [3],[4],[13]   $ 2.7 [6],[7]                
Investment, Identifier [Axis]: Halcon Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.89% [1]   12.89% [1]   12.20% [2] 12.89% [1] 12.89% [1] 12.89% [1] 12.89% [1] 12.20% [2] 12.20% [2] 12.20% [2] 12.20% [2]
Total first lien senior secured loans $ 12.5 [4]   $ 12.5 [4]   $ 13.4 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 12.5 [4]   12.5 [4]   13.4 [7]                
Investment, Identifier [Axis]: Halex Holdings, Inc.                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   0.0                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     0.0   0.0                
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: Halex Holdings, Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0   $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Hanger, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.39% [1]   11.39% [1]   10.43% [2] 11.39% [1] 11.39% [1] 11.39% [1] 11.39% [1] 10.43% [2] 10.43% [2] 10.43% [2] 10.43% [2]
Total first lien senior secured loans $ 54.1 [3],[4]   $ 54.1 [3],[4]   $ 54.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 54.1 [3],[4]   $ 54.1 [3],[4]   $ 53.2 [6],[7]                
Investment, Identifier [Axis]: Hanger, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.89% [1]   14.89% [1]   13.93% [2] 14.89% [1] 14.89% [1] 14.89% [1] 14.89% [1] 13.93% [2] 13.93% [2] 13.93% [2] 13.93% [2]
Total first lien senior secured loans $ 110.6 [3],[4]   $ 110.6 [3],[4]   $ 110.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 110.6 [3],[4]   110.6 [3],[4]   106.8 [6],[7]                
Investment, Identifier [Axis]: Harvey Tool Company, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 27.7   27.7   28.5                
Less: funded commitments (5.2)   (5.2)   0.0                
Total unfunded commitments 22.5   22.5   28.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 22.5   $ 22.5   $ 28.5                
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.89% [1]   10.89% [1]   10.64% [2] 10.89% [1] 10.89% [1] 10.89% [1] 10.89% [1] 10.64% [2] 10.64% [2] 10.64% [2] 10.64% [2]
Total first lien senior secured loans $ 1.8 [3],[4]   $ 1.8 [3],[4]   $ 1.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.8 [3],[4]   $ 1.8 [3],[4]   1.1 [6],[7]                
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.72%   10.72%     10.72% 10.72% 10.72% 10.72%        
Total first lien senior secured loans [3],[4] $ 2.7   $ 2.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 2.6   $ 2.6                    
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.89%   10.89%     10.89% 10.89% 10.89% 10.89%        
Total first lien senior secured loans [3],[4] $ 2.5   $ 2.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 2.4   2.4                    
Investment, Identifier [Axis]: HealthEdge Software, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 32.0   32.0   36.2                
Less: funded commitments (0.3)   (0.3)   (0.3)                
Total unfunded commitments 31.7   31.7   35.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 31.7   $ 31.7   $ 35.9                
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.74%         11.74% 11.74% 11.74% 11.74%
Total first lien senior secured loans [6],[7]         $ 87.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         87.2                
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.16%   12.16%     12.16% 12.16% 12.16% 12.16%        
Total first lien senior secured loans [3],[4] $ 87.2   $ 87.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 87.2   $ 87.2                    
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.16%   12.16%     12.16% 12.16% 12.16% 12.16%        
Total first lien senior secured loans [3],[4] $ 4.2   $ 4.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 4.2   4.2                    
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 0.0 [16]   0.0 [16]   0.0 [15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [16]   0.0 [16]   0.0 [15]                
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.0   4.0   4.0                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 4.0   4.0   4.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 4.0   $ 4.0   $ 4.0                
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.60% [1]   10.60% [1]   9.88% [2] 10.60% [1] 10.60% [1] 10.60% [1] 10.60% [1] 9.88% [2] 9.88% [2] 9.88% [2] 9.88% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   95.4                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     4.4   7.1                
Capital structuring service fees     0.0   1.9                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     33.3   42.6                
Fair Value 247.4   247.4   209.6                
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC, Class A1 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 155.3   155.3   124.0                
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC, Class A2 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 8.3   8.3   $ 6.3                
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.00%         11.00% 11.00% 11.00% 11.00%
Total first lien senior secured loans 83.8 [4]   83.8 [4]   $ 79.3 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 83.8 [4]   $ 83.8 [4]   79.3 [7]                
Investment, Identifier [Axis]: Helix Acquisition Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.34%   12.34%     12.34% 12.34% 12.34% 12.34%        
Total first lien senior secured loans [3],[4] $ 12.6   $ 12.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 12.2   12.2                    
Investment, Identifier [Axis]: Help/Systems Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.5   7.5   7.5                
Less: funded commitments (0.4)   (0.4)   0.0                
Total unfunded commitments 7.1   7.1   7.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 7.1   $ 7.1   7.5                
Investment, Identifier [Axis]: Help/Systems Holdings, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 9.17%   9.17%     9.17% 9.17% 9.17% 9.17%        
Total first lien senior secured loans [4] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 0.4   0.4                    
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 22.7   22.7   25.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 22.7   22.7   25.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 22.7   22.7   $ 25.5                
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC 1                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 10.7   10.7                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 10.7   10.7                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 10.7   $ 10.7                    
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.39% [1]   11.39% [1]   10.73% [2] 11.39% [1] 11.39% [1] 11.39% [1] 11.39% [1] 10.73% [2] 10.73% [2] 10.73% [2] 10.73% [2]
Total first lien senior secured loans $ 22.7 [3],[4]   $ 22.7 [3],[4]   $ 22.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 22.5 [3],[4]   $ 22.5 [3],[4]   $ 22.6 [6],[7]                
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.39% [1]   11.39% [1]   9.99% [2] 11.39% [1] 11.39% [1] 11.39% [1] 11.39% [1] 9.99% [2] 9.99% [2] 9.99% [2] 9.99% [2]
Total first lien senior secured loans $ 12.2 [3],[4]   $ 12.2 [3],[4]   $ 14.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 12.1 [3],[4]   $ 12.1 [3],[4]   $ 14.4 [6],[7]                
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.79% [1]   10.79% [1]   10.73% [2] 10.79% [1] 10.79% [1] 10.79% [1] 10.79% [1] 10.73% [2] 10.73% [2] 10.73% [2] 10.73% [2]
Total first lien senior secured loans $ 2.4 [3],[4]   $ 2.4 [3],[4]   $ 12.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.4 [3],[4]   $ 2.4 [3],[4]   12.1 [6],[7]                
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.14%   11.14%     11.14% 11.14% 11.14% 11.14%        
Total first lien senior secured loans [3],[4] $ 14.6   $ 14.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 14.3   $ 14.3                    
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.98%   10.98%     10.98% 10.98% 10.98% 10.98%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.3   0.3                    
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, Series A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 10.3 [4]   10.3 [4]   7.1 [7]                
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, Series A preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 130.9 [4]   130.9 [4]   112.9 [7]                
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, Series C common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 13.8 [4]   $ 13.8 [4]   $ 8.6 [7]                
Investment, Identifier [Axis]: HighTower Holding, LLC, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 6.75% [1]   6.75% [1]   675.00% [2] 6.75% [1] 6.75% [1] 6.75% [1] 6.75% [1] 675.00% [2] 675.00% [2] 675.00% [2] 675.00% [2]
Total first lien senior secured loans $ 8.1 [4],[5],[11]   $ 8.1 [4],[5],[11]   $ 8.1 [7],[8],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 7.0 [4],[5],[11]   7.0 [4],[5],[11]   6.7 [7],[8],[12]                
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 9.5   9.5   9.5                
Less: funded commitments (0.2)   (0.2)   (1.1)                
Total unfunded commitments 9.3   9.3   8.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 9.3   9.3   8.4                
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, Co-invest units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.0 [4]   $ 4.0 [4]   $ 3.8 [7]                
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.70% [1]   9.70% [1]   8.88% [2] 9.70% [1] 9.70% [1] 9.70% [1] 9.70% [1] 8.88% [2] 8.88% [2] 8.88% [2] 8.88% [2]
Total first lien senior secured loans $ 7.1 [3],[4],[11]   $ 7.1 [3],[4],[11]   $ 11.9 [6],[7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 6.8 [3],[4],[11]   6.8 [3],[4],[11]   $ 10.9 [6],[7],[12]                
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         8.13%         8.13% 8.13% 8.13% 8.13%
Total first lien senior secured loans 0.0 [16]   0.0 [16]   $ 1.0 [7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [16]   $ 0.0 [16]   $ 0.9 [7],[14]                
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.39% [1]   13.39% [1]   12.72% [2] 13.39% [1] 13.39% [1] 13.39% [1] 13.39% [1] 12.72% [2] 12.72% [2] 12.72% [2] 12.72% [2]
Total first lien senior secured loans $ 70.4 [3],[4]   $ 70.4 [3],[4]   $ 70.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 66.9 [3],[4]   66.9 [3],[4]   64.0 [6],[7]                
Investment, Identifier [Axis]: Hometown Food Company                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.9   3.9   3.9                
Less: funded commitments 0.0   0.0   (0.8)                
Total unfunded commitments 3.9   3.9   3.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.9   $ 3.9   $ 3.1                
Investment, Identifier [Axis]: Hometown Food Company, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.39%         9.39% 9.39% 9.39% 9.39%
Total first lien senior secured loans [6],[7],[14]         $ 0.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[14]         $ 0.8                
Investment, Identifier [Axis]: Honor Technology, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 15.28% [1]   15.28% [1]   14.38% [2] 15.28% [1] 15.28% [1] 15.28% [1] 15.28% [1] 14.38% [2] 14.38% [2] 14.38% [2] 14.38% [2]
Total first lien senior secured loans $ 2.5 [3],[4]   $ 2.5 [3],[4]   $ 2.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.3 [3],[4]   2.3 [3],[4]   2.3 [6],[7]                
Investment, Identifier [Axis]: Honor Technology, Inc., Warrant to purchase shares of Series D-2 preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 0.0   0.0                    
Investment, Identifier [Axis]: Honor Technology, Inc., Warrant to purchase shares of series D-2 preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         0.0                
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 22.6   22.6   22.6                
Less: funded commitments (13.0)   (13.0)   (9.4)                
Total unfunded commitments 9.6   9.6   13.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 9.6   9.6   13.2                
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 5.5                
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, Company units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 7.1   $ 7.1                    
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.04% [1]   11.04% [1]   10.23% [2] 11.04% [1] 11.04% [1] 11.04% [1] 11.04% [1] 10.23% [2] 10.23% [2] 10.23% [2] 10.23% [2]
Total first lien senior secured loans $ 60.0 [3],[4]   $ 60.0 [3],[4]   $ 60.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 56.4 [3],[4]   $ 56.4 [3],[4]   $ 56.1 [6],[7]                
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.23%         10.23% 10.23% 10.23% 10.23%
Total first lien senior secured loans [6],[7]         $ 9.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         8.7                
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.04%   11.04%     11.04% 11.04% 11.04% 11.04%        
Total first lien senior secured loans [3],[4] $ 11.7   $ 11.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 11.0   $ 11.0                    
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.75%   12.75%     12.75% 12.75% 12.75% 12.75%        
Total first lien senior secured loans [3],[4] $ 1.3   $ 1.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 1.2   1.2                    
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 104.6 [4]   104.6 [4]   99.5 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 87.8 [4]   87.8 [4]   82.6 [7]                
Investment, Identifier [Axis]: IQN Holding Corp.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 6.8   6.8   6.8                
Less: funded commitments (0.4)   (0.4)   0.0                
Total unfunded commitments 6.4   6.4   6.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 6.4   $ 6.4   $ 6.8                
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.38%   10.38%     10.38% 10.38% 10.38% 10.38%        
Total first lien senior secured loans [3],[4] $ 0.5   $ 0.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.5   $ 0.5                    
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.65%         9.65% 9.65% 9.65% 9.65%
Total first lien senior secured loans [6],[7]         $ 23.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 23.3                
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.71%         9.71% 9.71% 9.71% 9.71%
Total first lien senior secured loans [6],[7]         $ 0.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.4                
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.35%   10.35%     10.35% 10.35% 10.35% 10.35%        
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.4   0.4                    
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 9.1   9.1                    
Less: funded commitments (0.2)   (0.2)                    
Total unfunded commitments 8.9   8.9                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 8.9   8.9                    
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, L.P., Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 16.0 [4]   $ 16.0 [4]   $ 12.5 [7]                
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.38% [1]   11.38% [1]   10.63% [2] 11.38% [1] 11.38% [1] 11.38% [1] 11.38% [1] 10.63% [2] 10.63% [2] 10.63% [2] 10.63% [2]
Total first lien senior secured loans $ 4.2 [3],[4]   $ 4.2 [3],[4]   $ 3.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.2 [3],[4]   4.2 [3],[4]   3.5 [6],[7]                
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 0.0 [16]   0.0 [16]   0.0 [15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [16]   0.0 [16]   0.0 [15]                
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         9.8                
Less: funded commitments         (0.2)                
Total unfunded commitments         9.6                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         9.6                
Investment, Identifier [Axis]: ITI Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.7   5.7   5.7                
Less: funded commitments (4.8)   (4.8)   (2.0)                
Total unfunded commitments 0.9   0.9   3.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.9   $ 0.9   $ 3.7                
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.88% [1]   10.88% [1]   10.08% [2] 10.88% [1] 10.88% [1] 10.88% [1] 10.88% [1] 10.08% [2] 10.08% [2] 10.08% [2] 10.08% [2]
Total first lien senior secured loans $ 34.9 [3],[4]   $ 34.9 [3],[4]   $ 35.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 33.5 [3],[4]   $ 33.5 [3],[4]   $ 34.7 [6],[7]                
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.75% [1]   10.75% [1]   12.00% [2] 10.75% [1] 10.75% [1] 10.75% [1] 10.75% [1] 12.00% [2] 12.00% [2] 12.00% [2] 12.00% [2]
Total first lien senior secured loans $ 2.0 [3],[4]   $ 2.0 [3],[4]   $ 3.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.9 [3],[4]   $ 1.9 [3],[4]   $ 2.9 [6],[7]                
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.75% [1]   12.75% [1]   9.88% [2] 12.75% [1] 12.75% [1] 12.75% [1] 12.75% [1] 9.88% [2] 9.88% [2] 9.88% [2] 9.88% [2]
Total first lien senior secured loans $ 2.8 [3],[4]   $ 2.8 [3],[4]   $ 1.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7 [3],[4]   2.7 [3],[4]   $ 1.1 [6],[7]                
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.00%         12.00% 12.00% 12.00% 12.00%
Total first lien senior secured loans [6],[7]         $ 0.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.8                
Investment, Identifier [Axis]: IV Rollover Holdings, LLC, Class B units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: IV Rollover Holdings, LLC, Class X units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.1 [4]   2.1 [4]   2.1 [7]                
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     11.5   0.0                
Redemptions (cost)     0.0   3.9                
Sales (cost)     0.0   0.0                
Interest income     1.3   2.4                
Capital structuring service fees     0.0   0.7                
Dividend income     0.3   23.1                
Other income     0.0   0.5                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     4.2   (5.4)                
Fair Value 64.0   64.0   47.8                
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Class A common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 47.4   $ 47.4   0.1                
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Class B common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         $ 1.3                
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.00% [1]   14.00% [1]   14.00% [2] 14.00% [1] 14.00% [1] 14.00% [1] 14.00% [1] 14.00% [2] 14.00% [2] 14.00% [2] 14.00% [2]
Total first lien senior secured loans $ 16.6 [4]   $ 16.6 [4]   $ 16.6 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 16.6 [4]   $ 16.6 [4]   16.6 [7]                
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Series A preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         $ 29.8                
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.99% [1]   12.99% [1]   13.98% [2] 12.99% [1] 12.99% [1] 12.99% [1] 12.99% [1] 13.98% [2] 13.98% [2] 13.98% [2] 13.98% [2]
Total first lien senior secured loans $ 1.3 [3],[4]   $ 1.3 [3],[4]   $ 102.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.1 [3],[4]   $ 1.1 [3],[4]   $ 92.4 [6],[7]                
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.99% [1]   12.99% [1]   12.48% [2] 12.99% [1] 12.99% [1] 12.99% [1] 12.99% [1] 12.48% [2] 12.48% [2] 12.48% [2] 12.48% [2]
Total first lien senior secured loans $ 117.1 [3],[4]   $ 117.1 [3],[4]   $ 14.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 99.5 [3],[4]   $ 99.5 [3],[4]   $ 12.6 [6],[7]                
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.99% [1]   12.99% [1]   12.48% [2] 12.99% [1] 12.99% [1] 12.99% [1] 12.99% [1] 12.48% [2] 12.48% [2] 12.48% [2] 12.48% [2]
Total first lien senior secured loans $ 5.0 [3],[4]   $ 5.0 [3],[4]   $ 5.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.3 [3],[4]   $ 4.3 [3],[4]   $ 4.5 [6],[7]                
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         13.98%         13.98% 13.98% 13.98% 13.98%
Total first lien senior secured loans [6],[7]         $ 1.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 1.1                
Investment, Identifier [Axis]: Imprivata, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.35% [1]   11.35% [1]   10.57% [2] 11.35% [1] 11.35% [1] 11.35% [1] 11.35% [1] 10.57% [2] 10.57% [2] 10.57% [2] 10.57% [2]
Total first lien senior secured loans $ 16.1 [3],[4]   $ 16.1 [3],[4]   $ 16.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 15.0 [3],[4]   15.0 [3],[4]   15.1 [6],[7]                
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.0   7.0   13.0                
Less: funded commitments (0.3)   (0.3)   0.0                
Total unfunded commitments 6.7   6.7   13.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 6.7   6.7   13.0                
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 10.8 [4]   $ 10.8 [4]   $ 9.5 [7]                
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.40%         11.40% 11.40% 11.40% 11.40%
Total first lien senior secured loans [6],[7]         $ 11.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 11.1                
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.09%   12.09%     12.09% 12.09% 12.09% 12.09%        
Total first lien senior secured loans [3],[4] $ 12.7   $ 12.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 12.7   $ 12.7                    
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.79%   11.79%     11.79% 11.79% 11.79% 11.79%        
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.7   $ 0.7                    
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 14.00%   14.00%     14.00% 14.00% 14.00% 14.00%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.3   $ 0.3                    
Investment, Identifier [Axis]: Inmar, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.58%   10.58%     10.58% 10.58% 10.58% 10.58%        
Total first lien senior secured loans [3],[4] $ 20.1   $ 20.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 19.4   19.4                    
Investment, Identifier [Axis]: Inmar, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.38%         12.38% 12.38% 12.38% 12.38%
Total first lien senior secured loans [6],[7]         $ 28.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         26.6                
Investment, Identifier [Axis]: Inszone Mid, LLC and INSZ Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 13.9   13.9   17.2                
Less: funded commitments (0.4)   (0.4)   0.0                
Total unfunded commitments 13.5   13.5   17.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 13.5   $ 13.5   $ 17.2                
Investment, Identifier [Axis]: Inszone Mid, LLC and INSZ Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.95% [1]   11.95% [1]   11.33% [2] 11.95% [1] 11.95% [1] 11.95% [1] 11.95% [1] 11.33% [2] 11.33% [2] 11.33% [2] 11.33% [2]
Total first lien senior secured loans $ 20.9 [3],[4]   $ 20.9 [3],[4]   $ 17.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 20.9 [3],[4]   $ 20.9 [3],[4]   17.1 [6],[7]                
Investment, Identifier [Axis]: Inszone Mid, LLC and INSZ Holdings, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.96%   11.96%     11.96% 11.96% 11.96% 11.96%        
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.4   0.4                    
Investment, Identifier [Axis]: Inszone Mid, LLC and INSZ Holdings, LLC, Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.8   1.8   1.7                
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P.                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     283.1   1,544.2                
Redemptions (cost)     363.0   277.6                
Sales (cost)     0.0   0.0                
Interest income     23.1   22.5                
Capital structuring service fees     0.0   0.0                
Dividend income     117.0   205.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     29.9   (1.0)                
Fair Value 2,151.0   2,151.0   2,201.1                
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P., Member interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1,884.0 [4],[5]   $ 1,884.0 [4],[5]   $ 1,701.1 [8]                
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P., Subordinated revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.55% [1]   11.55% [1]   11.01% [2] 11.55% [1] 11.55% [1] 11.55% [1] 11.55% [1] 11.01% [2] 11.01% [2] 11.01% [2] 11.01% [2]
Total first lien senior secured loans $ 267.0 [3],[4],[5]   $ 267.0 [3],[4],[5]   $ 500.0 [6],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 267.0 [3],[4],[5]   267.0 [3],[4],[5]   500.0 [6],[8]                
Investment, Identifier [Axis]: JDC Healthcare Management, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.9   4.9   4.8                
Less: funded commitments (4.9)   (4.9)   (4.8)                
Total unfunded commitments 0.0   0.0   0.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.0   0.0   0.0                
Investment, Identifier [Axis]: JDC Healthcare Management, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 41.5 [4],[9]   41.5 [4],[9]   40.9 [7],[10]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 19.9 [4],[9]   19.9 [4],[9]   22.1 [7],[10]                
Investment, Identifier [Axis]: JDC Healthcare Management, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 4.9 [4],[9]   4.9 [4],[9]   4.8 [7],[10]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.3 [4],[9]   2.3 [4],[9]   2.6 [7],[10]                
Investment, Identifier [Axis]: JWC/KI Holdings, LLC, Membership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 10.7 [4]   10.7 [4]   9.0 [7]                
Investment, Identifier [Axis]: Jenny C Acquisition, Inc., Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 1.6 [4]   1.6 [4]   1.6 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.6 [4]   $ 1.6 [4]   $ 1.6 [7]                
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.65%         10.65% 10.65% 10.65% 10.65%
Total first lien senior secured loans [6],[7]         $ 19.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         18.8                
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.62%   11.62%     11.62% 11.62% 11.62% 11.62%        
Total first lien senior secured loans [3],[4] $ 19.1   $ 19.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 19.1   $ 19.1                    
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.62%   11.62%     11.62% 11.62% 11.62% 11.62%        
Total first lien senior secured loans [3],[4] $ 4.0   $ 4.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 4.0   4.0                    
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., Series A convertible preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.0 [4]   4.0 [4]   5.5 [7]                
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., Warrant to purchase shares of common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.6 [4]   2.6 [4]   1.3 [7]                
Investment, Identifier [Axis]: Joyce Lane Capital LLC and Joyce Lane Financing SPV LLC (fka Ciena Capital LLC)                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)         0.0                
Redemptions (cost)         0.3                
Sales (cost)         0.0                
Interest income         0.1                
Capital structuring service fees         0.0                
Dividend income         0.0                
Other income         0.0                
Net realized gains (losses):         0.5                
Net unrealized gains (losses):         0.1                
Fair Value         0.0                
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         9.1                
Less: funded commitments         0.0                
Total unfunded commitments         9.1                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         9.1                
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 2.3                
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.73%         9.73% 9.73% 9.73% 9.73%
Total first lien senior secured loans [6],[7]         $ 50.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 50.4                
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.73%         9.73% 9.73% 9.73% 9.73%
Total first lien senior secured loans [6],[7]         $ 2.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 2.3                
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.54%         9.54% 9.54% 9.54% 9.54%
Total first lien senior secured loans [6],[7]         $ 0.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.2                
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC)                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.0   5.0   5.0                
Less: funded commitments (2.3)   (2.3)   (3.2)                
Total unfunded commitments 2.7   2.7   1.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.7   $ 2.7   $ 1.8                
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.72%         9.72% 9.72% 9.72% 9.72%
Total first lien senior secured loans [6],[7]         $ 3.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 3.1                
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon [1] 10.24%   10.24%     10.24% 10.24% 10.24% 10.24%        
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.7   $ 0.7                    
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon [1] 12.25%   12.25%     12.25% 12.25% 12.25% 12.25%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.3   $ 0.3                    
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan 3                          
Schedule of Investments [Line Items]                          
Coupon [1] 10.40%   10.40%     10.40% 10.40% 10.40% 10.40%        
Total first lien senior secured loans [3],[4] $ 1.3   $ 1.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.3   $ 1.3                    
Investment, Identifier [Axis]: KNPC HoldCo, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.92% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.92% [2] 9.92% [2] 9.92% [2] 9.92% [2]
Total first lien senior secured loans $ 5.6 [3],[4]   $ 5.6 [3],[4]   $ 5.6 [6]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.5 [3],[4]   $ 5.5 [3],[4]   $ 5.5 [6]                
Investment, Identifier [Axis]: KNPC HoldCo, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.74% [1]   11.74% [1]   11.42% [2] 11.74% [1] 11.74% [1] 11.74% [1] 11.74% [1] 11.42% [2] 11.42% [2] 11.42% [2] 11.42% [2]
Total first lien senior secured loans $ 1.3 [3],[4]   $ 1.3 [3],[4]   $ 1.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.3 [3],[4]   1.3 [3],[4]   1.3 [6],[7]                
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.6   $ 4.6   $ 5.2                
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.92% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.92% [2] 9.92% [2] 9.92% [2] 9.92% [2]
Total first lien senior secured loans $ 11.7 [3],[4]   $ 11.7 [3],[4]   $ 12.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 11.7 [3],[4]   $ 11.7 [3],[4]   $ 12.6 [6],[7]                
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.92% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.92% [2] 9.92% [2] 9.92% [2] 9.92% [2]
Total first lien senior secured loans $ 3.1 [3],[4]   $ 3.1 [3],[4]   $ 3.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.1 [3],[4]   3.1 [3],[4]   3.3 [6],[7]                
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 30.5   30.5   31.2                
Less: funded commitments (6.8)   (6.8)   0.0                
Total unfunded commitments 23.7   23.7   31.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 23.7   $ 23.7   $ 31.2                
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon 11.35% [1]   11.35% [1]   10.33% [2] 11.35% [1] 11.35% [1] 11.35% [1] 11.35% [1] 10.33% [2] 10.33% [2] 10.33% [2] 10.33% [2]
Total first lien senior secured loans $ 167.7 [3],[4]   $ 167.7 [3],[4]   $ 167.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 164.4 [3],[4]   $ 164.4 [3],[4]   162.0 [6],[7]                
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon [1] 11.35%   11.35%     11.35% 11.35% 11.35% 11.35%        
Total first lien senior secured loans [3],[4],[13] $ 4.8   $ 4.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[13] 4.7   4.7                    
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., Perpetual preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 42.7   $ 42.7                    
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., Preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 40.0                
Investment, Identifier [Axis]: Kellermeyer Bergensons Services, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.27% [1]   11.27% [1]   10.41% [2] 11.27% [1] 11.27% [1] 11.27% [1] 11.27% [1] 10.41% [2] 10.41% [2] 10.41% [2] 10.41% [2]
Total first lien senior secured loans $ 56.5 [3],[4]   $ 56.5 [3],[4]   $ 56.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 49.1 [3],[4]   $ 49.1 [3],[4]   $ 51.1 [6],[7]                
Investment, Identifier [Axis]: Kellermeyer Bergensons Services, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.27% [1]   11.27% [1]   10.41% [2] 11.27% [1] 11.27% [1] 11.27% [1] 11.27% [1] 10.41% [2] 10.41% [2] 10.41% [2] 10.41% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 8.9   8.9   8.9                
Less: funded commitments (0.2)   (0.2)   (0.2)                
Total unfunded commitments 8.7   8.7   8.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 8.7   8.7   8.7                
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 8.4 [4]   $ 8.4 [4]   $ 7.0 [7]                
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.64% [1]   9.64% [1]   8.98% [2] 9.64% [1] 9.64% [1] 9.64% [1] 9.64% [1] 8.98% [2] 8.98% [2] 8.98% [2] 8.98% [2]
Total first lien senior secured loans $ 40.4 [3],[4]   $ 40.4 [3],[4]   $ 40.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 40.4 [3],[4]   40.4 [3],[4]   39.8 [6],[7]                
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 0.0 [16]   0.0 [16]   0.0 [15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [16]   0.0 [16]   0.0 [15]                
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Senior subordinated loan 1                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [7]         60.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         58.8                
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Senior subordinated loan 2                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [7]         8.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         7.8                
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Warrant to purchase Class C interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         8.3                
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.6   5.6   10.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 5.6   5.6   10.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 5.6   5.6   $ 10.1                
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P. 1                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.9   1.9                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 1.9   1.9                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.9   $ 1.9                    
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.73%         10.73% 10.73% 10.73% 10.73%
Total first lien senior secured loans [6],[7]         $ 35.7                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         34.6                
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.70%   11.70%     11.70% 11.70% 11.70% 11.70%        
Total first lien senior secured loans [3],[4] $ 35.9   $ 35.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 35.6   $ 35.6                    
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.91%   11.91%     11.91% 11.91% 11.91% 11.91%        
Total first lien senior secured loans [3],[4] $ 4.3   $ 4.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 4.2   4.2                    
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P., Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 10.4 [4]   10.4 [4]   9.7 [7]                
Investment, Identifier [Axis]: LJP Purchaser, Inc. and LJP Topco, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.4   4.4   4.4                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 4.4   4.4   4.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 4.4   4.4   4.4                
Investment, Identifier [Axis]: LJP Purchaser, Inc. and LJP Topco, LP, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.2 [4]   $ 5.2 [4]   $ 5.4 [7]                
Investment, Identifier [Axis]: LJP Purchaser, Inc. and LJP Topco, LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.59% [1]   11.59% [1]   10.44% [2] 11.59% [1] 11.59% [1] 11.59% [1] 11.59% [1] 10.44% [2] 10.44% [2] 10.44% [2] 10.44% [2]
Total first lien senior secured loans $ 8.5 [3],[4]   $ 8.5 [3],[4]   $ 8.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 8.4 [3],[4]   8.4 [3],[4]   8.3 [6],[7]                
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Membership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.1 [5]   $ 2.1 [5]   $ 3.0 [8]                
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan 1                          
Schedule of Investments [Line Items]                          
Coupon 11.00% [1]   11.00% [1]   10.50% [2] 11.00% [1] 11.00% [1] 11.00% [1] 11.00% [1] 10.50% [2] 10.50% [2] 10.50% [2] 10.50% [2]
Total first lien senior secured loans $ 37.0 [4],[5]   $ 37.0 [4],[5]   $ 3.0 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 35.9 [4],[5]   $ 35.9 [4],[5]   $ 3.0 [7],[8]                
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.50% [1]   10.50% [1]   10.50% [2] 10.50% [1] 10.50% [1] 10.50% [1] 10.50% [1] 10.50% [2] 10.50% [2] 10.50% [2] 10.50% [2]
Total first lien senior secured loans $ 3.0 [4],[5]   $ 3.0 [4],[5]   $ 37.0 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.9 [4],[5]   2.9 [4],[5]   36.6 [7],[8]                
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         3.9                
Less: funded commitments         0.0                
Total unfunded commitments         3.9                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 3.9                
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.59%         10.59% 10.59% 10.59% 10.59%
Total first lien senior secured loans [6],[7]         $ 21.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 21.6                
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.89%         10.89% 10.89% 10.89% 10.89%
Total first lien senior secured loans [6],[7]         $ 6.7                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 6.8                
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.42%         10.42% 10.42% 10.42% 10.42%
Total first lien senior secured loans [6],[7]         $ 6.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         6.2                
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, Membership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         15.5                
Investment, Identifier [Axis]: LTG Acquisition, Inc., Class A membership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 41.3   41.3   41.3                
Less: funded commitments (17.9)   (17.9)   (8.8)                
Total unfunded commitments 23.4   23.4   32.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 23.4   23.4   32.5                
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.9 [4]   $ 2.9 [4]   $ 4.5 [7]                
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.07% [1]   11.07% [1]   9.98% [2] 11.07% [1] 11.07% [1] 11.07% [1] 11.07% [1] 9.98% [2] 9.98% [2] 9.98% [2] 9.98% [2]
Total first lien senior secured loans $ 0.5 [3],[4]   $ 0.5 [3],[4]   $ 23.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.5 [3],[4]   $ 0.5 [3],[4]   $ 22.7 [6],[7]                
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.82% [1]   10.82% [1]   8.73% [2] 10.82% [1] 10.82% [1] 10.82% [1] 10.82% [1] 8.73% [2] 8.73% [2] 8.73% [2] 8.73% [2]
Total first lien senior secured loans $ 40.0 [3],[4]   $ 40.0 [3],[4]   $ 16.7 [6]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 36.4 [3],[4]   $ 36.4 [3],[4]   $ 16.0 [6]                
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.89% [1]   10.89% [1]   9.55% [2] 10.89% [1] 10.89% [1] 10.89% [1] 10.89% [1] 9.55% [2] 9.55% [2] 9.55% [2] 9.55% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 4.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 4.2 [6],[7]                
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.99% [1]   10.99% [1]   8.73% [2] 10.99% [1] 10.99% [1] 10.99% [1] 10.99% [1] 8.73% [2] 8.73% [2] 8.73% [2] 8.73% [2]
Total first lien senior secured loans $ 1.5 [3],[4]   $ 1.5 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.3 [3],[4]   $ 1.3 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.83%   10.83%     10.83% 10.83% 10.83% 10.83%        
Total first lien senior secured loans [3],[4] $ 2.9   $ 2.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 2.6   $ 2.6                    
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.25%         12.25% 12.25% 12.25% 12.25%
Total first lien senior secured loans [6],[7]         $ 8.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         8.4                
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.16%   11.16%     11.16% 11.16% 11.16% 11.16%        
Total first lien senior secured loans [3],[4] $ 13.4   $ 13.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 12.2   $ 12.2                    
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.00%   13.00%     13.00% 13.00% 13.00% 13.00%        
Total first lien senior secured loans [3],[4] $ 4.6   $ 4.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 4.2   4.2                    
Investment, Identifier [Axis]: Largest Portfolio Company Investment | Senior Direct Lending Program                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 373.0   373.0   377.0                
Investment, Identifier [Axis]: LeanTaaS Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 47.0   47.0   54.0                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 47.0   47.0   54.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 47.0   $ 47.0   $ 54.0                
Investment, Identifier [Axis]: LeanTaaS Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.74% [1]   12.74% [1]   12.08% [2] 12.74% [1] 12.74% [1] 12.74% [1] 12.74% [1] 12.08% [2] 12.08% [2] 12.08% [2] 12.08% [2]
Total first lien senior secured loans $ 38.8 [3],[4]   $ 38.8 [3],[4]   $ 31.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 38.8 [3],[4]   38.8 [3],[4]   31.2 [6],[7]                
Investment, Identifier [Axis]: Leviathan Intermediate Holdco, LLC and Leviathan Holdings, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.5   1.5   5.5                
Less: funded commitments (0.2)   (0.2)   (0.7)                
Total unfunded commitments 1.3   1.3   4.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.3   $ 1.3   $ 4.8                
Investment, Identifier [Axis]: Leviathan Intermediate Holdco, LLC and Leviathan Holdings, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.89% [1]   12.89% [1]   12.54% [2] 12.89% [1] 12.89% [1] 12.89% [1] 12.89% [1] 12.54% [2] 12.54% [2] 12.54% [2] 12.54% [2]
Total first lien senior secured loans $ 16.1 [3],[4]   $ 16.1 [3],[4]   $ 16.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 16.1 [3],[4]   $ 16.1 [3],[4]   $ 15.8 [6],[7]                
Investment, Identifier [Axis]: Leviathan Intermediate Holdco, LLC and Leviathan Holdings, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.89% [1]   12.89% [1]   12.54% [2] 12.89% [1] 12.89% [1] 12.89% [1] 12.89% [1] 12.54% [2] 12.54% [2] 12.54% [2] 12.54% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [3],[4]   0.2 [3],[4]   0.7 [6],[7]                
Investment, Identifier [Axis]: Leviathan Intermediate Holdco, LLC and Leviathan Holdings, L.P., Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.7   1.7   2.0                
Investment, Identifier [Axis]: Lew's Intermediate Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.3   2.3   2.3                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.3   2.3   2.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.3   $ 2.3   $ 2.3                
Investment, Identifier [Axis]: Lew's Intermediate Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.26% [1]   10.26% [1]   9.40% [2] 10.26% [1] 10.26% [1] 10.26% [1] 10.26% [1] 9.40% [2] 9.40% [2] 9.40% [2] 9.40% [2]
Total first lien senior secured loans $ 1.0 [3],[4]   $ 1.0 [3],[4]   $ 1.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.9 [3],[4]   0.9 [3],[4]   0.9 [6],[7]                
Investment, Identifier [Axis]: Lido Advisors, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.8   5.8   0.8                
Less: funded commitments (0.4)   (0.4)   (0.4)                
Total unfunded commitments 5.4   5.4   0.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 5.4   $ 5.4   $ 0.4                
Investment, Identifier [Axis]: Lido Advisors, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.39%   11.39%     11.39% 11.39% 11.39% 11.39%        
Total first lien senior secured loans [3],[4] $ 1.0   $ 1.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.0   $ 1.0                    
Investment, Identifier [Axis]: Lido Advisors, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.63% [1]   11.63% [1]   9.05% [2] 11.63% [1] 11.63% [1] 11.63% [1] 11.63% [1] 9.05% [2] 9.05% [2] 9.05% [2] 9.05% [2]
Total first lien senior secured loans $ 0.4 [3],[4]   $ 0.4 [3],[4]   $ 0.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.3 [3],[4]   0.3 [3],[4]   0.4 [6],[7]                
Investment, Identifier [Axis]: LifeStyles Bidco Ltd., Lifestyles Intermediate Holdco Ltd. and LifeStyles Parent, L.P., Class B common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.8 [4],[5]   $ 0.8 [4],[5]   $ 0.0 [7],[8]                
Investment, Identifier [Axis]: LifeStyles Bidco Ltd., Lifestyles Intermediate Holdco Ltd. and LifeStyles Parent, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.99% [1]   11.99% [1]   11.15% [2] 11.99% [1] 11.99% [1] 11.99% [1] 11.99% [1] 11.15% [2] 11.15% [2] 11.15% [2] 11.15% [2]
Total first lien senior secured loans $ 18.6 [3],[4],[5]   $ 18.6 [3],[4],[5]   $ 18.6 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 18.6 [3],[4],[5]   18.6 [3],[4],[5]   18.2 [6],[7],[8]                
Investment, Identifier [Axis]: LifeStyles Bidco Ltd., Lifestyles Intermediate Holdco Ltd. and LifeStyles Parent, L.P., Preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.3 [4],[5]   $ 3.3 [4],[5]   $ 3.2 [7],[8]                
Investment, Identifier [Axis]: Lifescan Global Corporation, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.25% [1]   11.25% [1]   9.74% [2] 11.25% [1] 11.25% [1] 11.25% [1] 11.25% [1] 9.74% [2] 9.74% [2] 9.74% [2] 9.74% [2]
Total first lien senior secured loans $ 13.2 [3],[4],[11]   $ 13.2 [3],[4],[11]   $ 14.3 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 10.6 [3],[4],[11]   $ 10.6 [3],[4],[11]   $ 10.3 [7]                
Investment, Identifier [Axis]: Lifescan Global Corporation, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.67% [1]   14.67% [1]   13.24% [2] 14.67% [1] 14.67% [1] 14.67% [1] 14.67% [1] 13.24% [2] 13.24% [2] 13.24% [2] 13.24% [2]
Total first lien senior secured loans $ 0.2 [3],[4],[11]   $ 0.2 [3],[4],[11]   $ 0.2 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4],[11]   0.1 [3],[4],[11]   0.2 [7]                
Investment, Identifier [Axis]: Lightbeam Bidco, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.3   1.3                    
Less: funded commitments (0.1)   (0.1)                    
Total unfunded commitments 1.2   1.2                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.2   $ 1.2                    
Investment, Identifier [Axis]: Lightbeam Bidco, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.43%   11.43%     11.43% 11.43% 11.43% 11.43%        
Total first lien senior secured loans [3],[4] $ 4.6   $ 4.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 4.5   4.5                    
Investment, Identifier [Axis]: Lightbeam Bidco, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [16] 0.0   0.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [16] 0.0   0.0                    
Investment, Identifier [Axis]: Lower ACS, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 25.9   25.9   25.9                
Less: funded commitments (1.5)   (1.5)   0.0                
Total unfunded commitments 24.4   24.4   25.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 24.4   $ 24.4   $ 25.9                
Investment, Identifier [Axis]: Lower ACS, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   10.13% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 10.13% [2] 10.13% [2] 10.13% [2] 10.13% [2]
Total first lien senior secured loans $ 0.8 [3],[4]   $ 0.8 [3],[4]   $ 5.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.8 [3],[4]   $ 0.8 [3],[4]   $ 5.4 [6],[7]                
Investment, Identifier [Axis]: Lower ACS, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.70%   10.70%     10.70% 10.70% 10.70% 10.70%        
Total first lien senior secured loans [3],[4] $ 1.5   $ 1.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.5   $ 1.5                    
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.70% [1]   8.70% [1]   8.23% [2] 8.70% [1] 8.70% [1] 8.70% [1] 8.70% [1] 8.23% [2] 8.23% [2] 8.23% [2] 8.23% [2]
Total first lien senior secured loans $ 15.2 [3],[4],[11]   $ 15.2 [3],[4],[11]   $ 14.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 15.2 [3],[4],[11]   $ 15.2 [3],[4],[11]   $ 12.5 [6],[7]                
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., Second lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.66% [1]   13.66% [1]   13.73% [2] 13.66% [1] 13.66% [1] 13.66% [1] 13.66% [1] 13.73% [2] 13.73% [2] 13.73% [2] 13.73% [2]
Total first lien senior secured loans $ 68.4 [3],[4]   $ 68.4 [3],[4]   $ 68.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 68.4 [3],[4]   $ 68.4 [3],[4]   $ 63.6 [6],[7]                
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., Second lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.66% [1]   13.66% [1]   13.73% [2] 13.66% [1] 13.66% [1] 13.66% [1] 13.66% [1] 13.73% [2] 13.73% [2] 13.73% [2] 13.73% [2]
Total first lien senior secured loans $ 23.6 [3],[4]   $ 23.6 [3],[4]   $ 23.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 23.6 [3],[4]   23.6 [3],[4]   22.0 [6],[7]                
Investment, Identifier [Axis]: ME Equity LLC, Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.5 [4]   4.5 [4]   4.5 [7]                
Investment, Identifier [Axis]: MRI Software LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 6.3   6.3   10.6                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 6.3   6.3   10.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 6.3   $ 6.3   $ 10.6                
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.84% [1]   10.84% [1]   10.23% [2] 10.84% [1] 10.84% [1] 10.84% [1] 10.84% [1] 10.23% [2] 10.23% [2] 10.23% [2] 10.23% [2]
Total first lien senior secured loans $ 46.8 [3],[4]   $ 46.8 [3],[4]   $ 47.1 [6]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 45.4 [3],[4]   $ 45.4 [3],[4]   $ 45.6 [6]                
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.83% [1]   10.83% [1]   10.23% [2] 10.83% [1] 10.83% [1] 10.83% [1] 10.83% [1] 10.23% [2] 10.23% [2] 10.23% [2] 10.23% [2]
Total first lien senior secured loans $ 1.0 [3],[4]   $ 1.0 [3],[4]   $ 17.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.9 [3],[4]   $ 0.9 [3],[4]   16.8 [6],[7]                
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.84%   10.84%     10.84% 10.84% 10.84% 10.84%        
Total first lien senior secured loans [3],[4] $ 20.5   $ 20.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 19.9   19.9                    
Investment, Identifier [Axis]: MailSouth, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 8.7 [4],[9]   8.7 [4],[9]   8.7 [7],[10]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.7 [4],[9]   1.7 [4],[9]   3.9 [7],[10]                
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.0   2.0   2.0                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.0   2.0   2.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 2.0   2.0   2.0                
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P., Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.8 [4]   4.8 [4]   3.6 [7]                
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P., Class B units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [4]   $ 0.0 [4]   $ 0.0                
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.62% [1]   12.62% [1]   11.98% [2] 12.62% [1] 12.62% [1] 12.62% [1] 12.62% [1] 11.98% [2] 11.98% [2] 11.98% [2] 11.98% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 30.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   30.3 [6],[7]                
Investment, Identifier [Axis]: Management Consulting & Research LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         4.0                
Less: funded commitments         0.0                
Total unfunded commitments         4.0                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 4.0                
Investment, Identifier [Axis]: Management Consulting & Research LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.94%         10.94% 10.94% 10.94% 10.94%
Total first lien senior secured loans [6],[7]         $ 1.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         1.0                
Investment, Identifier [Axis]: Manna Pro Products, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.0   7.0   7.0                
Less: funded commitments (5.1)   (5.1)   (5.1)                
Total unfunded commitments 1.9   1.9   1.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.9   $ 1.9   $ 1.9                
Investment, Identifier [Axis]: Manna Pro Products, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.20% [1]   11.20% [1]   10.14% [2] 11.20% [1] 11.20% [1] 11.20% [1] 11.20% [1] 10.14% [2] 10.14% [2] 10.14% [2] 10.14% [2]
Total first lien senior secured loans $ 5.1 [3],[4]   $ 5.1 [3],[4]   $ 5.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.6 [3],[4]   4.6 [3],[4]   4.7 [6],[7]                
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 9.1 [4]   $ 9.1 [4]   $ 10.2 [7]                
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.98% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 0.4 [3],[4]   $ 0.4 [3],[4]   $ 6.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.4 [3],[4]   $ 0.4 [3],[4]   $ 6.5 [6],[7]                
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.91% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.91% [2] 10.91% [2] 10.91% [2] 10.91% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 2.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [3],[4]   0.2 [3],[4]   $ 2.5 [6],[7]                
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.94%         10.94% 10.94% 10.94% 10.94%
Total first lien senior secured loans [6],[7]         $ 2.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 2.1                
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.98%         10.98% 10.98% 10.98% 10.98%
Total first lien senior secured loans [6],[7]         $ 0.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.3                
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.9   5.9   6.9                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 5.9   5.9   6.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 5.9   $ 5.9   $ 6.9                
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.39% [1]   11.39% [1]   10.80% [2] 11.39% [1] 11.39% [1] 11.39% [1] 11.39% [1] 10.80% [2] 10.80% [2] 10.80% [2] 10.80% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.7 [6],[7]                
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.31% [1]   11.31% [1]   11.04% [2] 11.31% [1] 11.31% [1] 11.31% [1] 11.31% [1] 11.04% [2] 11.04% [2] 11.04% [2] 11.04% [2]
Total first lien senior secured loans $ 1.5 [3],[4]   $ 1.5 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.5 [3],[4]   $ 1.5 [3],[4]   0.2 [6],[7]                
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.54%   11.54%     11.54% 11.54% 11.54% 11.54%        
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.2   0.2                    
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., Limited partnership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.4 [4]   $ 3.4 [4]   $ 2.6 [7]                
Investment, Identifier [Axis]: Maverick Acquisition, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.44% [1]   11.44% [1]   10.98% [2] 11.44% [1] 11.44% [1] 11.44% [1] 11.44% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 27.5 [3],[4]   $ 27.5 [3],[4]   $ 27.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 23.3 [3],[4]   23.3 [3],[4]   25.4 [6],[7]                
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 32.9   32.9   32.9                
Less: funded commitments (9.0)   (9.0)   (7.3)                
Total unfunded commitments 23.9   23.9   25.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 23.9   23.9   25.6                
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP, Class A-1 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 35.0 [4]   35.0 [4]   33.1 [7]                
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [15]         0.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [16]   0.0 [16]   $ 0.0 [15]                
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP, Series A preferred stock                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         7.00%         7.00% 7.00% 7.00% 7.00%
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 79.7 [4]   79.7 [4]   $ 76.6 [7]                
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.5   4.5   4.5                
Less: funded commitments (0.7)   (0.7)   (1.9)                
Total unfunded commitments 3.8   3.8   2.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.8   $ 3.8   $ 2.6                
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.95% [1]   11.95% [1]   9.43% [2] 11.95% [1] 11.95% [1] 11.95% [1] 11.95% [1] 9.43% [2] 9.43% [2] 9.43% [2] 9.43% [2]
Total first lien senior secured loans $ 5.5 [3],[4]   $ 5.5 [3],[4]   $ 84.5 [6],[7],[19]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.5 [3],[4]   $ 5.5 [3],[4]   $ 84.5 [6],[7],[19]                
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.95% [1]   11.95% [1]   10.14% [2] 11.95% [1] 11.95% [1] 11.95% [1] 11.95% [1] 10.14% [2] 10.14% [2] 10.14% [2] 10.14% [2]
Total first lien senior secured loans $ 84.5 [3],[4],[20]   $ 84.5 [3],[4],[20]   $ 5.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 84.5 [3],[4],[20]   $ 84.5 [3],[4],[20]   $ 5.5 [6],[7]                
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan, First Out Tranche                          
Schedule of Investments [Line Items]                          
Coupon 2.00%   2.00%   2.00% 2.00% 2.00% 2.00% 2.00% 2.00% 2.00% 2.00% 2.00%
Total first lien senior secured loans $ 40.9   $ 40.9   $ 40.9                
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.93% [1]   11.93% [1]   10.12% [2] 11.93% [1] 11.93% [1] 11.93% [1] 11.93% [1] 10.12% [2] 10.12% [2] 10.12% [2] 10.12% [2]
Total first lien senior secured loans $ 0.7 [3],[4]   $ 0.7 [3],[4]   $ 1.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.7 [3],[4]   0.7 [3],[4]   $ 1.9 [6],[7]                
Investment, Identifier [Axis]: McLaren Group Limited, Senior preference shares                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.50%         12.50% 12.50% 12.50% 12.50%
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[8]         $ 26.2                
Investment, Identifier [Axis]: McLaren Group Limited, Warrant to purchase units of ordinary shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[8]         0.8                
Investment, Identifier [Axis]: McLaren Group Limited, Warrant to purchase units of ordinary shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[8]         2.8                
Investment, Identifier [Axis]: Medline Borrower, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 6.9   6.9   6.9                
Less: funded commitments (0.1)   (0.1)   (0.2)                
Total unfunded commitments 6.8   6.8   6.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 6.8   6.8   6.7                
Investment, Identifier [Axis]: Medline Borrower, LP, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 0.0 [16]   0.0 [16]   0.0 [15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [16]   0.0 [16]   0.0 [15]                
Investment, Identifier [Axis]: Miami Beckham United LLC, Class A preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 98.8   98.8   94.7                
Investment, Identifier [Axis]: Miami Beckham United LLC, Class B preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 42.5   42.5                    
Investment, Identifier [Axis]: Micromeritics Instrument Corp.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.1   4.1   4.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 4.1   4.1   4.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 4.1   $ 4.1   $ 4.1                
Investment, Identifier [Axis]: Micromeritics Instrument Corp., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.84% [1]   9.84% [1]   9.65% [2] 9.84% [1] 9.84% [1] 9.84% [1] 9.84% [1] 9.65% [2] 9.65% [2] 9.65% [2] 9.65% [2]
Total first lien senior secured loans $ 19.7 [3],[4]   $ 19.7 [3],[4]   $ 20.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 19.7 [3],[4]   19.7 [3],[4]   20.7 [6],[7]                
Investment, Identifier [Axis]: Microstar Logistics LLC, Microstar Global Asset Management LLC, MStar Holding Corporation and Kegstar USA Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 7.4 [4]   $ 7.4 [4]   $ 6.6 [7]                
Investment, Identifier [Axis]: Microstar Logistics LLC, Microstar Global Asset Management LLC, MStar Holding Corporation and Kegstar USA Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon 15.86% [1]   15.86% [1]   15.58% [2] 15.86% [1] 15.86% [1] 15.86% [1] 15.86% [1] 15.58% [2] 15.58% [2] 15.58% [2] 15.58% [2]
Total first lien senior secured loans $ 168.3 [3],[4]   $ 168.3 [3],[4]   $ 159.3 [6]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 168.3 [3],[4]   168.3 [3],[4]   159.3 [6]                
Investment, Identifier [Axis]: Microstar Logistics LLC, Microstar Global Asset Management LLC, MStar Holding Corporation and Kegstar USA Inc., Series A preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.9 [4]   2.9 [4]   2.6 [7]                
Investment, Identifier [Axis]: Mimecast Borrowerco, Inc. and Magnesium Co- Invest SCSp                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 15.1   15.1   15.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 15.1   15.1   15.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 15.1   15.1   $ 15.1                
Investment, Identifier [Axis]: Mimecast Borrowerco, Inc. and Magnesium Co- Invest SCSp 1                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.0   1.0                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 1.0   1.0                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.0   $ 1.0                    
Investment, Identifier [Axis]: Mimecast Borrowerco, Inc. and Magnesium Co- Invest SCSp, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.95% [1]   10.95% [1]   10.17% [2] 10.95% [1] 10.95% [1] 10.95% [1] 10.95% [1] 10.17% [2] 10.17% [2] 10.17% [2] 10.17% [2]
Total first lien senior secured loans $ 101.6 [3],[4],[5]   $ 101.6 [3],[4],[5]   $ 102.1 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 100.6 [3],[4],[5]   $ 100.6 [3],[4],[5]   $ 99.1 [6],[7],[8]                
Investment, Identifier [Axis]: Mimecast Borrowerco, Inc. and Magnesium Co- Invest SCSp, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.68% [1]   10.68% [1]   9.18% [2] 10.68% [1] 10.68% [1] 10.68% [1] 10.68% [1] 9.18% [2] 9.18% [2] 9.18% [2] 9.18% [2]
Total first lien senior secured loans $ 36.4 [3],[4],[5]   $ 36.4 [3],[4],[5]   $ 34.8 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 36.0 [3],[4],[5]   36.0 [3],[4],[5]   33.7 [6],[7],[8]                
Investment, Identifier [Axis]: Mimecast Borrowerco, Inc. and Magnesium Co- Invest SCSp, Limited partnership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 40.2 [4],[5]   40.2 [4],[5]   39.4 [7],[8]                
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 28.4   28.4   31.3                
Less: funded commitments (3.0)   (3.0)   (4.0)                
Total unfunded commitments 25.4   25.4   27.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 25.4   $ 25.4   $ 27.3                
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.88% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.88% [2] 9.88% [2] 9.88% [2] 9.88% [2]
Total first lien senior secured loans $ 35.3 [3],[4]   $ 35.3 [3],[4]   $ 32.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 33.1 [3],[4]   $ 33.1 [3],[4]   $ 30.9 [6],[7]                
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.88% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.88% [2] 9.88% [2] 9.88% [2] 9.88% [2]
Total first lien senior secured loans $ 2.9 [3],[4],[13]   $ 2.9 [3],[4],[13]   $ 4.0 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.8 [3],[4],[13]   2.8 [3],[4],[13]   3.8 [6],[7],[14]                
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., Limited partner interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 7.5 [4]   $ 7.5 [4]   $ 8.8 [7]                
Investment, Identifier [Axis]: Mitchell International, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 8.94%   8.94%     8.94% 8.94% 8.94% 8.94%        
Total first lien senior secured loans [3],[4],[11] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[11] $ 0.7   $ 0.7                    
Investment, Identifier [Axis]: Mitchell International, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.69% [1]   11.69% [1]   11.23% [2] 11.69% [1] 11.69% [1] 11.69% [1] 11.69% [1] 11.23% [2] 11.23% [2] 11.23% [2] 11.23% [2]
Total first lien senior secured loans $ 98.1 [3],[4],[11]   $ 98.1 [3],[4],[11]   $ 98.1 [6],[7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 86.2 [3],[4],[11]   86.2 [3],[4],[11]   81.0 [6],[7],[12]                
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.2   2.2                    
Less: funded commitments (0.6)   (0.6)                    
Total unfunded commitments 1.6   1.6                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 1.6   1.6                    
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 12.1   $ 12.1                    
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.25%   11.25%     11.25% 11.25% 11.25% 11.25%        
Total first lien senior secured loans [3],[4] $ 0.9   $ 0.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.9   $ 0.9                    
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.24%   11.24%     11.24% 11.24% 11.24% 11.24%        
Total first lien senior secured loans [3],[4] $ 0.5   $ 0.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.5   $ 0.5                    
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.05%   11.05%     11.05% 11.05% 11.05% 11.05%        
Total first lien senior secured loans [3],[4] $ 1.4   $ 1.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.4   $ 1.4                    
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.25%   13.25%     13.25% 13.25% 13.25% 13.25%        
Total first lien senior secured loans [3],[4] $ 0.6   $ 0.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.6   0.6                    
Investment, Identifier [Axis]: Monica Holdco (US) Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.6   3.6   3.6                
Less: funded commitments (3.6)   (3.6)   (2.4)                
Total unfunded commitments 0.0   0.0   1.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.0   $ 0.0   $ 1.2                
Investment, Identifier [Axis]: Monica Holdco (US) Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.14% [1]   12.14% [1]   11.48% [2] 12.14% [1] 12.14% [1] 12.14% [1] 12.14% [1] 11.48% [2] 11.48% [2] 11.48% [2] 11.48% [2]
Total first lien senior secured loans $ 2.6 [3],[4]   $ 2.6 [3],[4]   $ 2.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.5 [3],[4]   $ 2.5 [3],[4]   $ 2.5 [6],[7]                
Investment, Identifier [Axis]: Monica Holdco (US) Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.26% [1]   12.26% [1]   10.99% [2] 12.26% [1] 12.26% [1] 12.26% [1] 12.26% [1] 10.99% [2] 10.99% [2] 10.99% [2] 10.99% [2]
Total first lien senior secured loans $ 3.6 [3],[4]   $ 3.6 [3],[4]   $ 2.4 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.5 [3],[4]   3.5 [3],[4]   2.3 [6],[7],[14]                
Investment, Identifier [Axis]: Monolith Brands Group, Inc., Series A-1 preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 15.5 [4]   15.5 [4]   15.5 [7]                
Investment, Identifier [Axis]: Moon Valley Nursery of Arizona Retail, LLC, Moon Valley Nursery Farm Holdings, LLC, Moon Valley Nursery RE Holdings LLC, and Stonecourt IV Partners, LP, Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 34.7   34.7   42.9                
Investment, Identifier [Axis]: Moonraker AcquisitionCo LLC and Moonraker HoldCo LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 19.0   19.0   19.0                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 19.0   19.0   19.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 19.0   19.0   19.0                
Investment, Identifier [Axis]: Moonraker AcquisitionCo LLC and Moonraker HoldCo LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.5   $ 4.5   $ 4.5                
Investment, Identifier [Axis]: Moonraker AcquisitionCo LLC and Moonraker HoldCo LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.08% [1]   11.08% [1]   10.32% [2] 11.08% [1] 11.08% [1] 11.08% [1] 11.08% [1] 10.32% [2] 10.32% [2] 10.32% [2] 10.32% [2]
Total first lien senior secured loans $ 25.0 [3],[4]   $ 25.0 [3],[4]   $ 25.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 25.0 [3],[4]   $ 25.0 [3],[4]   $ 24.6 [6],[7]                
Investment, Identifier [Axis]: Movati Athletic (Group) Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon 11.39% [1]   11.39% [1]   10.18% [2] 11.39% [1] 11.39% [1] 11.39% [1] 11.39% [1] 10.18% [2] 10.18% [2] 10.18% [2] 10.18% [2]
Total first lien senior secured loans $ 4.8 [3],[4],[5]   $ 4.8 [3],[4],[5]   $ 4.7 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.8 [3],[4],[5]   4.8 [3],[4],[5]   4.6 [6],[7],[8]                
Investment, Identifier [Axis]: Mr. Greens Intermediate, LLC, Florida Veg Investments LLC, MRG Texas, LLC and Restaurant Produce and Services Blocker, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 6.3   6.3                    
Less: funded commitments (0.1)   (0.1)                    
Total unfunded commitments 6.2   6.2                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 6.2   6.2                    
Investment, Identifier [Axis]: Mr. Greens Intermediate, LLC, Florida Veg Investments LLC, MRG Texas, LLC and Restaurant Produce and Services Blocker, LLC, Class B limited liability company interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 9.6   $ 9.6                    
Investment, Identifier [Axis]: Mr. Greens Intermediate, LLC, Florida Veg Investments LLC, MRG Texas, LLC and Restaurant Produce and Services Blocker, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.51%   11.51%     11.51% 11.51% 11.51% 11.51%        
Total first lien senior secured loans [3],[4] $ 9.8   $ 9.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 9.5   9.5                    
Investment, Identifier [Axis]: Mr. Greens Intermediate, LLC, Florida Veg Investments LLC, MRG Texas, LLC and Restaurant Produce and Services Blocker, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [16] 0.0   0.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [16] 0.0   0.0                    
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 9.2   9.2   27.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 9.2   9.2   27.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 9.2   $ 9.2   $ 27.5                
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.90% [1]   13.90% [1]   13.08% [2] 13.90% [1] 13.90% [1] 13.90% [1] 13.90% [1] 13.08% [2] 13.08% [2] 13.08% [2] 13.08% [2]
Total first lien senior secured loans $ 93.8 [3],[4]   $ 93.8 [3],[4]   $ 75.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 93.8 [3],[4]   $ 93.8 [3],[4]   75.5 [6],[7]                
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC, Preferred units                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 8.00%   8.00%     8.00% 8.00% 8.00% 8.00%        
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 45.1   $ 45.1   45.9                
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.0   3.0   3.0                
Less: funded commitments (0.6)   (0.6)   (0.6)                
Total unfunded commitments 2.4   2.4   2.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.4   $ 2.4   $ 2.4                
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.89% [1]   11.89% [1]   11.23% [2] 11.89% [1] 11.89% [1] 11.89% [1] 11.89% [1] 11.23% [2] 11.23% [2] 11.23% [2] 11.23% [2]
Total first lien senior secured loans $ 6.2 [3],[4]   $ 6.2 [3],[4]   $ 6.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.2 [3],[4]   $ 6.2 [3],[4]   $ 6.3 [6],[7]                
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.89% [1]   11.89% [1]   11.23% [2] 11.89% [1] 11.89% [1] 11.89% [1] 11.89% [1] 11.23% [2] 11.23% [2] 11.23% [2] 11.23% [2]
Total first lien senior secured loans $ 2.3 [3],[4]   $ 2.3 [3],[4]   $ 2.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.3 [3],[4]   $ 2.3 [3],[4]   $ 2.3 [6],[7]                
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.89% [1]   11.89% [1]   11.23% [2] 11.89% [1] 11.89% [1] 11.89% [1] 11.89% [1] 11.23% [2] 11.23% [2] 11.23% [2] 11.23% [2]
Total first lien senior secured loans $ 1.3 [3],[4]   $ 1.3 [3],[4]   $ 1.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.3 [3],[4]   $ 1.3 [3],[4]   $ 1.3 [6],[7]                
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.89% [1]   11.89% [1]   11.23% [2] 11.89% [1] 11.89% [1] 11.89% [1] 11.89% [1] 11.23% [2] 11.23% [2] 11.23% [2] 11.23% [2]
Total first lien senior secured loans $ 0.6 [3],[4]   $ 0.6 [3],[4]   $ 0.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.6 [3],[4]   0.6 [3],[4]   0.6 [6],[7]                
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 11.5   11.5   28.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 11.5   11.5   28.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 11.5   11.5   28.1                
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, Class A-2 common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 25.5 [4]   $ 25.5 [4]   $ 18.5 [7]                
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.20% [1]   11.20% [1]   10.38% [2] 11.20% [1] 11.20% [1] 11.20% [1] 11.20% [1] 10.38% [2] 10.38% [2] 10.38% [2] 10.38% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 97.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 95.1 [6],[7]                
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.20% [1]   11.20% [1]   10.38% [2] 11.20% [1] 11.20% [1] 11.20% [1] 11.20% [1] 10.38% [2] 10.38% [2] 10.38% [2] 10.38% [2]
Total first lien senior secured loans $ 96.5 [3],[4]   $ 96.5 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 94.6 [3],[4]   $ 94.6 [3],[4]   0.2 [6],[7]                
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.71%   11.71%     11.71% 11.71% 11.71% 11.71%        
Total first lien senior secured loans [3],[4] $ 8.3   $ 8.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 8.1   8.1                    
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.7   12.7   12.7                
Less: funded commitments (1.1)   (1.1)   0.0                
Total unfunded commitments 11.6   11.6   12.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 11.6   $ 11.6   $ 12.7                
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.27% [1]   10.27% [1]   9.38% [2] 10.27% [1] 10.27% [1] 10.27% [1] 10.27% [1] 9.38% [2] 9.38% [2] 9.38% [2] 9.38% [2]
Total first lien senior secured loans $ 31.8 [3],[4]   $ 31.8 [3],[4]   $ 32.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 29.9 [3],[4]   $ 29.9 [3],[4]   $ 30.7 [6],[7]                
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.27% [1]   10.27% [1]   9.38% [2] 10.27% [1] 10.27% [1] 10.27% [1] 10.27% [1] 9.38% [2] 9.38% [2] 9.38% [2] 9.38% [2]
Total first lien senior secured loans $ 4.7 [3],[4]   $ 4.7 [3],[4]   $ 4.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.4 [3],[4]   $ 4.4 [3],[4]   4.5 [6],[7]                
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.20%   10.20%     10.20% 10.20% 10.20% 10.20%        
Total first lien senior secured loans [3],[4] $ 1.1   $ 1.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 1.0   1.0                    
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.5   12.5   12.5                
Less: funded commitments (8.1)   (8.1)   (3.1)                
Total unfunded commitments 4.4   4.4   9.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 4.4   $ 4.4   $ 9.4                
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         8.13%         8.13% 8.13% 8.13% 8.13%
Total first lien senior secured loans [7],[14]         $ 2.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[14]         2.1                
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 8.97%   8.97%     8.97% 8.97% 8.97% 8.97%        
Total first lien senior secured loans [4],[13] $ 6.8   $ 6.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[13] $ 6.4   $ 6.4                    
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.00%   11.00%     11.00% 11.00% 11.00% 11.00%        
Total first lien senior secured loans [4] $ 0.5   $ 0.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 0.5   0.5                    
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, Partnership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7 [4]   2.7 [4]   2.0 [7]                
Investment, Identifier [Axis]: NSPC Intermediate Corp. and NSPC Holdings, LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 0.0   0.0                    
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.5 [4]   3.5 [4]   3.6 [7]                
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [4]   0.2 [4]   0.2 [7]                
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Senior preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.3 [4]   0.3 [4]   0.3 [7]                
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Common stock 1                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.0                
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Common stock 2                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.0                
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Senior preferred series A-1 shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         46.5                
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Series B preferred stock 1                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.0                
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Series B preferred stock 2                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.0                
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Series C preferred stock 1                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.0                
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Series C preferred stock 2                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.0                
Investment, Identifier [Axis]: National Intergovernmental Purchasing Alliance Company                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 9.0   9.0   9.0                
Less: funded commitments 0.0   0.0   (1.2)                
Total unfunded commitments 9.0   9.0   7.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 9.0   9.0   $ 7.8                
Investment, Identifier [Axis]: National Intergovernmental Purchasing Alliance Company, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         7.12%         7.12% 7.12% 7.12% 7.12%
Total first lien senior secured loans [7]         $ 1.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         1.2                
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)         0.0                
Redemptions (cost)         131.0                
Sales (cost)         0.0                
Interest income         0.4                
Capital structuring service fees         0.0                
Dividend income         0.1                
Other income         0.0                
Net realized gains (losses):         19.0                
Net unrealized gains (losses):         (9.4)                
Fair Value         0.0                
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.6   0.6   0.6                
Less: funded commitments (0.1)   (0.1)   (0.1)                
Total unfunded commitments 0.5   0.5   0.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.5   0.5   0.5                
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 8.9 [4],[5]   $ 8.9 [4],[5]   $ 7.5 [7],[8]                
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.45% [1]   9.45% [1]   8.66% [2] 9.45% [1] 9.45% [1] 9.45% [1] 9.45% [1] 8.66% [2] 8.66% [2] 8.66% [2] 8.66% [2]
Total first lien senior secured loans $ 14.8 [3],[4],[5]   $ 14.8 [3],[4],[5]   $ 14.9 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 14.8 [3],[4],[5]   $ 14.8 [3],[4],[5]   $ 14.6 [6],[7],[8]                
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 7.74% [1]   7.74% [1]   6.11% [2] 7.74% [1] 7.74% [1] 7.74% [1] 7.74% [1] 6.11% [2] 6.11% [2] 6.11% [2] 6.11% [2]
Total first lien senior secured loans $ 4.9 [4],[5]   $ 4.9 [4],[5]   $ 4.8 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.9 [4],[5]   $ 4.9 [4],[5]   $ 4.7 [7],[8]                
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 7.74% [1]   7.74% [1]   6.11% [2] 7.74% [1] 7.74% [1] 7.74% [1] 7.74% [1] 6.11% [2] 6.11% [2] 6.11% [2] 6.11% [2]
Total first lien senior secured loans $ 1.5 [4],[5]   $ 1.5 [4],[5]   $ 1.5 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.5 [4],[5]   $ 1.5 [4],[5]   $ 1.5 [7],[8]                
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.45% [1]   9.45% [1]   8.66% [2] 9.45% [1] 9.45% [1] 9.45% [1] 9.45% [1] 8.66% [2] 8.66% [2] 8.66% [2] 8.66% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4],[5]   0.1 [3],[4],[5]   0.1 [6],[7],[8]                
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.6   12.6   12.6                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 12.6   12.6   12.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 12.6   $ 12.6   $ 12.6                
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.00% [1]   10.00% [1]   8.82% [2] 10.00% [1] 10.00% [1] 10.00% [1] 10.00% [1] 8.82% [2] 8.82% [2] 8.82% [2] 8.82% [2]
Total first lien senior secured loans $ 99.3 [3],[4],[11]   $ 99.3 [3],[4],[11]   $ 99.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 87.2 [3],[4],[11]   $ 87.2 [3],[4],[11]   $ 88.4 [6],[7]                
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.06% [1]   8.06% [1]   8.57% [2] 8.06% [1] 8.06% [1] 8.06% [1] 8.06% [1] 8.57% [2] 8.57% [2] 8.57% [2] 8.57% [2]
Total first lien senior secured loans $ 16.5 [4],[11]   $ 16.5 [4],[11]   $ 74.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 15.1 [4],[11]   $ 15.1 [4],[11]   $ 65.9 [6],[7]                
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.75% [1]   9.75% [1]   6.25% [2] 9.75% [1] 9.75% [1] 9.75% [1] 9.75% [1] 6.25% [2] 6.25% [2] 6.25% [2] 6.25% [2]
Total first lien senior secured loans $ 81.9 [3],[4]   $ 81.9 [3],[4]   $ 16.2 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 70.5 [3],[4]   $ 70.5 [3],[4]   $ 14.4 [7]                
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured note                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 9.29%   9.29%     9.29% 9.29% 9.29% 9.29%        
Total first lien senior secured loans [4],[11] $ 52.8   $ 52.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[11] 48.5   48.5                    
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured notes                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         929.00%         929.00% 929.00% 929.00% 929.00%
Total first lien senior secured loans [7],[12]         $ 52.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[12]         49.8                
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.6 [4]   $ 4.6 [4]   $ 4.0 [7]                
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.75% [1]   14.75% [1]   13.57% [2] 14.75% [1] 14.75% [1] 14.75% [1] 14.75% [1] 13.57% [2] 13.57% [2] 13.57% [2] 13.57% [2]
Total first lien senior secured loans $ 221.3 [3],[4]   $ 221.3 [3],[4]   $ 221.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 201.4 [3],[4]   201.4 [3],[4]   214.7 [6],[7]                
Investment, Identifier [Axis]: Nest Topco Borrower Inc., KKR Nest Co-Invest L.P., and NBLY 2021-1                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         119.1                
Less: funded commitments         0.0                
Total unfunded commitments         119.1                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         119.1                
Investment, Identifier [Axis]: Nest Topco Borrower Inc., KKR Nest Co-Invest L.P., and NBLY 2021-1, Limited partner interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 9.2 [4]   $ 9.2 [4]   $ 10.2 [7]                
Investment, Identifier [Axis]: Nest Topco Borrower Inc., KKR Nest Co-Invest L.P., and NBLY 2021-1, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.00% [1]   14.00% [1]   13.26% [2] 14.00% [1] 14.00% [1] 14.00% [1] 14.00% [1] 13.26% [2] 13.26% [2] 13.26% [2] 13.26% [2]
Total first lien senior secured loans $ 119.1 [3],[4]   $ 119.1 [3],[4]   $ 119.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 116.8 [3],[4]   $ 116.8 [3],[4]   $ 117.9 [6],[7]                
Investment, Identifier [Axis]: New Era Cap, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.19% [1]   11.19% [1]   9.94% [2] 11.19% [1] 11.19% [1] 11.19% [1] 11.19% [1] 9.94% [2] 9.94% [2] 9.94% [2] 9.94% [2]
Total first lien senior secured loans $ 27.0 [3],[4]   $ 27.0 [3],[4]   $ 27.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 27.0 [3],[4]   27.0 [3],[4]   27.8 [6],[7]                
Investment, Identifier [Axis]: Noble Aerospace, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.6   5.6   5.6                
Less: funded commitments (2.2)   (2.2)   (2.2)                
Total unfunded commitments 3.4   3.4   3.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.4   3.4   3.4                
Investment, Identifier [Axis]: Noble Aerospace, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 0.0 [16]   0.0 [16]   0.0 [15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [16]   0.0 [16]   0.0 [15]                
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.1   4.1   8.1                
Less: funded commitments (0.5)   (0.5)   0.0                
Total unfunded commitments 3.6   3.6   8.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.6   3.6   8.1                
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.9 [4]   $ 2.9 [4]   $ 2.9 [7]                
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.23% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.23% [2] 10.23% [2] 10.23% [2] 10.23% [2]
Total first lien senior secured loans $ 19.9 [3],[4]   $ 19.9 [3],[4]   $ 20.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 19.7 [3],[4]   $ 19.7 [3],[4]   $ 20.0 [6],[7]                
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.08% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.08% [2] 10.08% [2] 10.08% [2] 10.08% [2]
Total first lien senior secured loans $ 2.8 [3],[4]   $ 2.8 [3],[4]   $ 2.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.8 [3],[4]   $ 2.8 [3],[4]   2.9 [6],[7]                
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.06%   11.06%     11.06% 11.06% 11.06% 11.06%        
Total first lien senior secured loans [3],[4] $ 4.0   $ 4.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 4.0   $ 4.0                    
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.63%   10.63%     10.63% 10.63% 10.63% 10.63%        
Total first lien senior secured loans [3],[4] $ 0.5   $ 0.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.5   0.5                    
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., Class A preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 37.3 [4]   $ 37.3 [4]   $ 38.8 [7]                
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.90% [1]   10.90% [1]   10.18% [2] 10.90% [1] 10.90% [1] 10.90% [1] 10.90% [1] 10.18% [2] 10.18% [2] 10.18% [2] 10.18% [2]
Total first lien senior secured loans $ 47.3 [3],[4]   $ 47.3 [3],[4]   $ 47.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 47.3 [3],[4]   $ 47.3 [3],[4]   $ 47.5 [6],[7]                
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.90% [1]   10.90% [1]   10.18% [2] 10.90% [1] 10.90% [1] 10.90% [1] 10.90% [1] 10.18% [2] 10.18% [2] 10.18% [2] 10.18% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 2.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 2.6 [6],[7]                
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.90% [1]   10.90% [1]   10.18% [2] 10.90% [1] 10.90% [1] 10.90% [1] 10.90% [1] 10.18% [2] 10.18% [2] 10.18% [2] 10.18% [2]
Total first lien senior secured loans $ 2.5 [3],[4]   $ 2.5 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.5 [3],[4]   $ 2.5 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.90% [1]   10.90% [1]   10.18% [2] 10.90% [1] 10.90% [1] 10.90% [1] 10.90% [1] 10.18% [2] 10.18% [2] 10.18% [2] 10.18% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [4] 1.4   1.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 1.4   1.4                    
Investment, Identifier [Axis]: North Haven Fairway Buyer, LLC, Fairway Lawns, LLC and Command Pest Control, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 10.3   10.3   22.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 10.3   10.3   22.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 10.3   $ 10.3   $ 22.5                
Investment, Identifier [Axis]: North Haven Fairway Buyer, LLC, Fairway Lawns, LLC and Command Pest Control, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.05%         11.05% 11.05% 11.05% 11.05%
Total first lien senior secured loans [6],[7]         $ 6.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         6.2                
Investment, Identifier [Axis]: North Haven Fairway Buyer, LLC, Fairway Lawns, LLC and Command Pest Control, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.74%   11.74%     11.74% 11.74% 11.74% 11.74%        
Total first lien senior secured loans [3],[4] $ 7.6   $ 7.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 7.6   $ 7.6                    
Investment, Identifier [Axis]: North Haven Fairway Buyer, LLC, Fairway Lawns, LLC and Command Pest Control, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.62%   11.62%     11.62% 11.62% 11.62% 11.62%        
Total first lien senior secured loans [3],[4] $ 5.4   $ 5.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 5.4   5.4                    
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         3.5                
Less: funded commitments         0.0                
Total unfunded commitments         3.5                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         3.5                
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.4   $ 0.4   $ 1.8                
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.19%         11.19% 11.19% 11.19% 11.19%
Total first lien senior secured loans [6],[7]         $ 25.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         23.5                
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon [1] 13.19%   13.19%     13.19% 13.19% 13.19% 13.19%        
Total first lien senior secured loans [3],[4] $ 25.4   $ 25.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 22.3   $ 22.3                    
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon [1] 13.39%   13.39%     13.39% 13.39% 13.39% 13.39%        
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.4   0.4                    
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.2   4.2   5.1                
Less: funded commitments (0.7)   (0.7)   (0.8)                
Total unfunded commitments 3.5   3.5   4.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.5   $ 3.5   $ 4.3                
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.90% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.90% [2] 9.90% [2] 9.90% [2] 9.90% [2]
Total first lien senior secured loans $ 7.7 [3],[4]   $ 7.7 [3],[4]   $ 6.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 7.5 [3],[4]   $ 7.5 [3],[4]   $ 6.7 [6],[7]                
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.92% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.92% [2] 9.92% [2] 9.92% [2] 9.92% [2]
Total first lien senior secured loans $ 0.7 [3],[4]   $ 0.7 [3],[4]   $ 0.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.7 [3],[4]   0.7 [3],[4]   0.8 [6],[7]                
Investment, Identifier [Axis]: Northwinds Holding, Inc. and Northwinds Services Group LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 15.1   15.1                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 15.1   15.1                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 15.1   15.1                    
Investment, Identifier [Axis]: Northwinds Holding, Inc. and Northwinds Services Group LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 2.5   $ 2.5                    
Investment, Identifier [Axis]: Northwinds Holding, Inc. and Northwinds Services Group LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.77%   11.77%     11.77% 11.77% 11.77% 11.77%        
Total first lien senior secured loans [3],[4] $ 16.4   $ 16.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 15.9   $ 15.9                    
Investment, Identifier [Axis]: Northwinds Holding, Inc. and Northwinds Services Group LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.80%   11.80%     11.80% 11.80% 11.80% 11.80%        
Total first lien senior secured loans [3],[4] $ 2.8   $ 2.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 2.7   2.7                    
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., Class A preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 7.6 [4]   7.6 [4]   9.2 [7]                
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., Class C units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [4]   $ 0.0 [4]   $ 0.0                
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.95% [1]   11.95% [1]   11.17% [2] 11.95% [1] 11.95% [1] 11.95% [1] 11.95% [1] 11.17% [2] 11.17% [2] 11.17% [2] 11.17% [2]
Total first lien senior secured loans $ 22.8 [3],[4]   $ 22.8 [3],[4]   $ 23.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 22.8 [3],[4]   $ 22.8 [3],[4]   $ 23.5 [6],[7]                
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.95% [1]   11.95% [1]   11.17% [2] 11.95% [1] 11.95% [1] 11.95% [1] 11.95% [1] 11.17% [2] 11.17% [2] 11.17% [2] 11.17% [2]
Total first lien senior secured loans $ 0.3 [3],[4]   $ 0.3 [3],[4]   $ 6.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.3 [3],[4]   $ 0.3 [3],[4]   $ 6.3 [6],[7]                
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.03% [1]   10.03% [1]   10.02% [2] 10.03% [1] 10.03% [1] 10.03% [1] 10.03% [1] 10.02% [2] 10.02% [2] 10.02% [2] 10.02% [2]
Total first lien senior secured loans $ 25.7 [3],[4]   $ 25.7 [3],[4]   $ 25.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 25.7 [3],[4]   $ 25.7 [3],[4]   $ 25.9 [6],[7]                
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.03% [1]   10.03% [1]   10.02% [2] 10.03% [1] 10.03% [1] 10.03% [1] 10.03% [1] 10.02% [2] 10.02% [2] 10.02% [2] 10.02% [2]
Total first lien senior secured loans $ 15.2 [3],[4]   $ 15.2 [3],[4]   $ 15.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 15.2 [3],[4]   $ 15.2 [3],[4]   $ 15.2 [6],[7]                
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.03% [1]   10.03% [1]   10.02% [2] 10.03% [1] 10.03% [1] 10.03% [1] 10.03% [1] 10.02% [2] 10.02% [2] 10.02% [2] 10.02% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: OTG Management, LLC, Class A preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 12.5 [4]   12.5 [4]   13.1 [7]                
Investment, Identifier [Axis]: OTG Management, LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: OTG Management, LLC, Warrant to purchase common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 0.0   $ 0.0                    
Investment, Identifier [Axis]: OTG Management, LLC, Warrant to purchase of common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         $ 0.0                
Investment, Identifier [Axis]: OUTFRONT Media Inc., Series A convertible perpetual preferred stock                          
Schedule of Investments [Line Items]                          
Coupon | Rate 7.00% [1]   7.00% [1]   700.00% [2] 7.00% [1] 7.00% [1] 7.00% [1] 7.00% [1] 700.00% [2] 700.00% [2] 700.00% [2] 700.00% [2]
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 31.5 [4],[5]   $ 31.5 [4],[5]   $ 33.6 [7],[8]                
Investment, Identifier [Axis]: Offen, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         5.6                
Less: funded commitments         0.0                
Total unfunded commitments         5.6                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 5.6                
Investment, Identifier [Axis]: Offen, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.46% [1]   10.46% [1]   8.51% [2] 10.46% [1] 10.46% [1] 10.46% [1] 10.46% [1] 8.51% [2] 8.51% [2] 8.51% [2] 8.51% [2]
Total first lien senior secured loans $ 0.1 [4]   $ 0.1 [4]   $ 1.4 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [4]   0.1 [4]   1.4 [7]                
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     1.4   8.3                
Redemptions (cost)     0.1   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   3.2                
Capital structuring service fees     0.0   0.3                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     (7.6)   (11.7)                
Fair Value 38.2   38.2   44.7                
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.4   4.4   1.6                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 4.4   4.4   1.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions (0.5)   (0.5)   (1.6)                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.9   3.9   0.0                
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 53.3 [4],[9]   53.3 [4],[9]   50.9 [10]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 32.0 [4],[9]   32.0 [4],[9]   38.1 [10]                
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 7.2 [4],[9]   7.2 [4],[9]   8.7 [7],[10]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.3 [4],[9]   4.3 [4],[9]   6.6 [7],[10]                
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [4],[9] 3.2   3.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[9] 1.9   1.9                    
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: OneDigital Borrower LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.5   7.5   7.5                
Less: funded commitments (2.8)   (2.8)   (0.4)                
Total unfunded commitments 4.7   4.7   7.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 4.7   $ 4.7   7.1                
Investment, Identifier [Axis]: OneDigital Borrower LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.00%   11.00%     11.00% 11.00% 11.00% 11.00%        
Total first lien senior secured loans $ 2.4 [13]   $ 2.4 [13]   0.0 [15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.3 [4],[13]   2.3 [4],[13]   0.0 [15]                
Investment, Identifier [Axis]: Opal Fuels LLC and Opal Fuels Inc., Class A common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 22.8 [5],[11]   22.8 [5],[11]   22.3 [8],[12]                
Investment, Identifier [Axis]: Opal Fuels LLC and Opal Fuels Inc., Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 29.7 [5]   29.7 [5]   28.5 [8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 29.7 [5]   $ 29.7 [5]   $ 28.5 [8]                
Investment, Identifier [Axis]: OpenMarket Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.79% [1]   11.79% [1]   10.98% 11.79% [1] 11.79% [1] 11.79% [1] 11.79% [1] 10.98% 10.98% 10.98% 10.98%
Total first lien senior secured loans $ 14.9 [3],[4],[5]   $ 14.9 [3],[4],[5]   $ 51.6 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 14.9 [3],[4],[5]   $ 14.9 [3],[4],[5]   $ 51.1 [6],[7],[8]                
Investment, Identifier [Axis]: Osmose Utilities Services, Inc. and Pine Intermediate Holding LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.97% [1]   11.97% [1]   11.13% [2] 11.97% [1] 11.97% [1] 11.97% [1] 11.97% [1] 11.13% [2] 11.13% [2] 11.13% [2] 11.13% [2]
Total first lien senior secured loans $ 55.3 [3],[4]   $ 55.3 [3],[4]   $ 55.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 53.0 [3],[4]   53.0 [3],[4]   51.4 [6],[7]                
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment II, L.P.                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.1   0.1                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     1.5   4.2                
Fair Value 16.9   16.9   15.5                
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment II, L.P., Limited partnership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 16.9 [4],[5]   16.9 [4],[5]   15.5 [7],[8]                
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment, L.P.                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   0.0                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     0.0   (0.6)                
Fair Value 0.6   0.6   0.7                
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment, L.P. and PCG-Ares Sidecar Investment II, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 50.0   50.0   50.0                
Less: funded commitments (12.4)   (12.4)   (12.5)                
Total unfunded commitments 37.6   37.6   37.5                
Less: commitments substantially at discretion of the Company 37.6   37.6   37.5                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.0   0.0   0.0                
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment, L.P., Limited partnership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.6 [5]   0.6 [5]   0.7 [8]                
Investment, Identifier [Axis]: PDDS HoldCo, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.6   1.6   2.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 1.6   1.6   2.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.6   $ 1.6   $ 2.1                
Investment, Identifier [Axis]: PDDS HoldCo, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.30%         12.30% 12.30% 12.30% 12.30%
Total first lien senior secured loans [6],[7]         $ 9.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         9.2                
Investment, Identifier [Axis]: PDDS HoldCo, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.09%   13.09%     13.09% 13.09% 13.09% 13.09%        
Total first lien senior secured loans [3],[4] $ 10.1   $ 10.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 10.1   $ 10.1                    
Investment, Identifier [Axis]: PDDS HoldCo, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.62%   12.62%     12.62% 12.62% 12.62% 12.62%        
Total first lien senior secured loans [3],[4] $ 0.9   $ 0.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.9   $ 0.9                    
Investment, Identifier [Axis]: PDDS HoldCo, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.09%   13.09%     13.09% 13.09% 13.09% 13.09%        
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.7   0.7                    
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.6   7.6   7.6                
Less: funded commitments (3.8)   (3.8)   (6.1)                
Total unfunded commitments 3.8   3.8   1.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.8   3.8   1.5                
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.0 [4]   $ 3.0 [4]   $ 2.7 [7]                
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.75% [1]   9.75% [1]   8.73% [2] 9.75% [1] 9.75% [1] 9.75% [1] 9.75% [1] 8.73% [2] 8.73% [2] 8.73% [2] 8.73% [2]
Total first lien senior secured loans $ 52.6 [3],[4]   $ 52.6 [3],[4]   $ 52.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 52.1 [3],[4]   $ 52.1 [3],[4]   $ 51.9 [6],[7]                
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.75% [1]   9.75% [1]   8.82% [2] 9.75% [1] 9.75% [1] 9.75% [1] 9.75% [1] 8.82% [2] 8.82% [2] 8.82% [2] 8.82% [2]
Total first lien senior secured loans $ 3.8 [3],[4]   $ 3.8 [3],[4]   $ 6.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.8 [3],[4]   $ 3.8 [3],[4]   $ 6.0 [6],[7]                
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.88% [1]   13.88% [1]   13.18% [2] 13.88% [1] 13.88% [1] 13.88% [1] 13.88% [1] 13.18% [2] 13.18% [2] 13.18% [2] 13.18% [2]
Total first lien senior secured loans $ 70.1 [3],[4]   $ 70.1 [3],[4]   $ 70.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 69.4 [3],[4]   $ 69.4 [3],[4]   $ 68.7 [6],[7]                
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.88% [1]   13.88% [1]   13.18% [2] 13.88% [1] 13.88% [1] 13.88% [1] 13.88% [1] 13.18% [2] 13.18% [2] 13.18% [2] 13.18% [2]
Total first lien senior secured loans $ 8.3 [3],[4]   $ 8.3 [3],[4]   $ 8.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 8.2 [3],[4]   $ 8.2 [3],[4]   $ 8.6 [6],[7]                
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.88% [1]   13.88% [1]   13.18% [2] 13.88% [1] 13.88% [1] 13.88% [1] 13.88% [1] 13.18% [2] 13.18% [2] 13.18% [2] 13.18% [2]
Total first lien senior secured loans $ 8.7 [3],[4]   $ 8.7 [3],[4]   $ 8.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 8.7 [3],[4]   $ 8.7 [3],[4]   $ 8.1 [6],[7]                
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.88% [1]   13.88% [1]   13.18% [2] 13.88% [1] 13.88% [1] 13.88% [1] 13.88% [1] 13.18% [2] 13.18% [2] 13.18% [2] 13.18% [2]
Total first lien senior secured loans $ 7.2 [3],[4]   $ 7.2 [3],[4]   $ 7.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 7.1 [3],[4]   7.1 [3],[4]   7.1 [6],[7]                
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Series A preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 22.6 [4]   22.6 [4]   21.2 [7]                
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   6.3                
Redemptions (cost)     0.2   4.6                
Sales (cost)     0.0   0.0                
Interest income     1.1   1.5                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     (1.4)   1.0                
Fair Value 26.1   26.1   27.7                
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.9   5.9   5.9                
Less: funded commitments (4.3)   (4.3)   (4.5)                
Total unfunded commitments 1.6   1.6   1.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 1.6   1.6   1.4                
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC, Common unit                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.9 [4]   $ 6.9 [4]   $ 8.3 [7]                
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.50% [1]   11.50% [1]   10.73% [2] 11.50% [1] 11.50% [1] 11.50% [1] 11.50% [1] 10.73% [2] 10.73% [2] 10.73% [2] 10.73% [2]
Total first lien senior secured loans $ 14.9 [3],[4]   $ 14.9 [3],[4]   $ 14.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 14.9 [3],[4]   $ 14.9 [3],[4]   $ 14.9 [6],[7]                
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.50% [1]   11.50% [1]   10.73% [2] 11.50% [1] 11.50% [1] 11.50% [1] 11.50% [1] 10.73% [2] 10.73% [2] 10.73% [2] 10.73% [2]
Total first lien senior secured loans $ 4.3 [3],[4]   $ 4.3 [3],[4]   $ 4.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.3 [3],[4]   4.3 [3],[4]   4.5 [6],[7]                
Investment, Identifier [Axis]: Partnership Capital Growth Investors III, L.P., Limited partnership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.1 [4],[5],[11]   4.1 [4],[5],[11]   3.9 [7],[8],[12]                
Investment, Identifier [Axis]: Pathstone Family Office LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.1   1.1                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 1.1   1.1                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.1   $ 1.1                    
Investment, Identifier [Axis]: Pathstone Family Office LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.00%   12.00%     12.00% 12.00% 12.00% 12.00%        
Total first lien senior secured loans [3],[4],[5] $ 3.9   $ 3.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 3.9   3.9                    
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.9   1.9   1.9                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 1.9   1.9   1.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 1.9   1.9   1.9                
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC, Class R common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.3 [4]   $ 3.3 [4]   $ 5.5 [7]                
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.97% [1]   12.97% [1]   12.13% [2] 12.97% [1] 12.97% [1] 12.97% [1] 12.97% [1] 12.13% [2] 12.13% [2] 12.13% [2] 12.13% [2]
Total first lien senior secured loans $ 76.3 [3],[4]   $ 76.3 [3],[4]   $ 76.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 64.9 [3],[4]   64.9 [3],[4]   65.6 [6],[7]                
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.2   2.2   2.2                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.2   2.2   2.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.2   $ 2.2   $ 2.2                
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         8.87%         8.87% 8.87% 8.87% 8.87%
Total first lien senior secured loans [6],[7]         $ 16.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         15.5                
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.99%   10.99%     10.99% 10.99% 10.99% 10.99%        
Total first lien senior secured loans [3],[4] $ 14.3   $ 14.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 13.8   $ 13.8                    
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.14%   11.14%     11.14% 11.14% 11.14% 11.14%        
Total first lien senior secured loans [3],[4] $ 1.6   $ 1.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 1.5   1.5                    
Investment, Identifier [Axis]: PayNearMe, Inc., Warrant to purchase shares of Series E preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.0                
Investment, Identifier [Axis]: Paya, Inc and GTCR-Ultra Holdings LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         4.5                
Less: funded commitments         0.0                
Total unfunded commitments         4.5                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         4.5                
Investment, Identifier [Axis]: Paya, Inc and GTCR-Ultra Holdings LLC, Class B units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         2.6                
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 11.6   11.6   20.6                
Less: funded commitments (7.7)   (7.7)   0.0                
Total unfunded commitments 3.9   3.9   20.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.9   3.9   20.6                
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 12.6   $ 12.6   $ 14.3                
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.57% [1]   10.57% [1]   10.48% [2] 10.57% [1] 10.57% [1] 10.57% [1] 10.57% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 13.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 13.7 [6],[7]                
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.25% [1]   11.25% [1]   10.48% [2] 11.25% [1] 11.25% [1] 11.25% [1] 11.25% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.05% [1]   11.05% [1]   9.98% [2] 11.05% [1] 11.05% [1] 11.05% [1] 11.05% [1] 9.98% [2] 9.98% [2] 9.98% [2] 9.98% [2]
Total first lien senior secured loans $ 0.3 [3],[4]   $ 0.3 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.3 [3],[4]   $ 0.3 [3],[4]   0.2 [6],[7]                
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.64%   10.64%     10.64% 10.64% 10.64% 10.64%        
Total first lien senior secured loans [3],[4] $ 7.7   $ 7.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 7.6   7.6                    
Investment, Identifier [Axis]: Pelican Products, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.3   2.3   2.3                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.3   2.3   2.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.3   $ 2.3   $ 2.3                
Investment, Identifier [Axis]: Pelican Products, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.91% [1]   12.91% [1]   12.20% [2] 12.91% [1] 12.91% [1] 12.91% [1] 12.91% [1] 12.20% [2] 12.20% [2] 12.20% [2] 12.20% [2]
Total first lien senior secured loans $ 60.0 [3],[4]   $ 60.0 [3],[4]   $ 60.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 55.2 [3],[4]   55.2 [3],[4]   55.8 [6],[7]                
Investment, Identifier [Axis]: People Corporation                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 14.7   14.7   20.6                
Less: funded commitments (2.0)   (2.0)   (1.3)                
Total unfunded commitments 12.7   12.7   19.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 12.7   $ 12.7   $ 19.3                
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.28% [1]   11.28% [1]   10.91% [2] 11.28% [1] 11.28% [1] 11.28% [1] 11.28% [1] 10.91% [2] 10.91% [2] 10.91% [2] 10.91% [2]
Total first lien senior secured loans $ 39.6 [3],[4],[5]   $ 39.6 [3],[4],[5]   $ 40.9 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 39.6 [3],[4],[5]   $ 39.6 [3],[4],[5]   $ 40.5 [6],[7],[8]                
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.54% [1]   10.54% [1]   10.91% [2] 10.54% [1] 10.54% [1] 10.54% [1] 10.54% [1] 10.91% [2] 10.91% [2] 10.91% [2] 10.91% [2]
Total first lien senior secured loans $ 12.1 [3],[4],[5]   $ 12.1 [3],[4],[5]   $ 12.8 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 12.0 [3],[4],[5]   $ 12.0 [3],[4],[5]   $ 12.6 [6],[7],[8]                
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.81% [1]   10.81% [1]   10.17% [2] 10.81% [1] 10.81% [1] 10.81% [1] 10.81% [1] 10.17% [2] 10.17% [2] 10.17% [2] 10.17% [2]
Total first lien senior secured loans $ 2.5 [3],[4],[5]   $ 2.5 [3],[4],[5]   $ 8.1 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.4 [3],[4],[5]   $ 2.4 [3],[4],[5]   $ 7.8 [6],[7],[8]                
Investment, Identifier [Axis]: People Corporation, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.27% [1]   11.27% [1]   10.99% [2] 11.27% [1] 11.27% [1] 11.27% [1] 11.27% [1] 10.99% [2] 10.99% [2] 10.99% [2] 10.99% [2]
Total first lien senior secured loans $ 2.0 [3],[4],[5]   $ 2.0 [3],[4],[5]   $ 1.3 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.0 [3],[4],[5]   2.0 [3],[4],[5]   1.3 [6],[7],[8]                
Investment, Identifier [Axis]: Perforce Software, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.5   7.5   0.5                
Less: funded commitments (1.1)   (1.1)   0.0                
Total unfunded commitments 6.4   6.4   0.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 6.4   $ 6.4   $ 0.5                
Investment, Identifier [Axis]: Perforce Software, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.75%   11.75%     11.75% 11.75% 11.75% 11.75%        
Total first lien senior secured loans [4],[13] $ 1.0   $ 1.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[13] $ 1.0   $ 1.0                    
Investment, Identifier [Axis]: PerkinElmer U.S. LLC and NM Polaris Co-Invest, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.99%   11.99%     11.99% 11.99% 11.99% 11.99%        
Total first lien senior secured loans [3],[4] $ 17.5   $ 17.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 17.0   17.0                    
Investment, Identifier [Axis]: PerkinElmer U.S. LLC and NM Polaris Co-Invest, L.P., Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 9.9   9.9                    
Investment, Identifier [Axis]: PestCo Holdings, LLC and PestCo, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.9   0.9                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 0.9   0.9                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 0.9   0.9                    
Investment, Identifier [Axis]: PestCo Holdings, LLC and PestCo, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.8   $ 1.8                    
Investment, Identifier [Axis]: PestCo Holdings, LLC and PestCo, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.87%   11.87%     11.87% 11.87% 11.87% 11.87%        
Total first lien senior secured loans [3],[4] $ 1.7   $ 1.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.6   $ 1.6                    
Investment, Identifier [Axis]: PetVet Care Centers, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.10% [1]   10.10% [1]   9.38% [2] 10.10% [1] 10.10% [1] 10.10% [1] 10.10% [1] 9.38% [2] 9.38% [2] 9.38% [2] 9.38% [2]
Total first lien senior secured loans $ 5.3 [3],[4]   $ 5.3 [3],[4]   $ 5.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 5.2 [3],[4]   5.2 [3],[4]   5.0 [6],[7]                
Investment, Identifier [Axis]: Petroleum Service Group LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 15.1   15.1   17.5                
Less: funded commitments (2.1)   (2.1)   (4.4)                
Total unfunded commitments 13.0   13.0   13.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 13.0   $ 13.0   $ 13.1                
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.27% [1]   11.27% [1]   10.42% [2] 11.27% [1] 11.27% [1] 11.27% [1] 11.27% [1] 10.42% [2] 10.42% [2] 10.42% [2] 10.42% [2]
Total first lien senior secured loans $ 33.7 [3],[4]   $ 33.7 [3],[4]   $ 34.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 33.7 [3],[4]   $ 33.7 [3],[4]   $ 34.5 [6],[7]                
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.24% [1]   11.24% [1]   10.72% [2] 11.24% [1] 11.24% [1] 11.24% [1] 11.24% [1] 10.72% [2] 10.72% [2] 10.72% [2] 10.72% [2]
Total first lien senior secured loans $ 0.7 [3],[4]   $ 0.7 [3],[4]   $ 11.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.7 [3],[4]   $ 0.7 [3],[4]   $ 11.6 [6],[7]                
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.52%   11.52%     11.52% 11.52% 11.52% 11.52%        
Total first lien senior secured loans [3],[4] $ 11.2   $ 11.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 11.2   $ 11.2                    
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.23%   11.23%     11.23% 11.23% 11.23% 11.23%        
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.4   $ 0.4                    
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.34%   11.34%     11.34% 11.34% 11.34% 11.34%        
Total first lien senior secured loans [3],[4] $ 2.4   $ 2.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 2.4   $ 2.4                    
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.54% [1]   11.54% [1]   9.71% [2] 11.54% [1] 11.54% [1] 11.54% [1] 11.54% [1] 9.71% [2] 9.71% [2] 9.71% [2] 9.71% [2]
Total first lien senior secured loans $ 0.2 [3],[4],[13]   $ 0.2 [3],[4],[13]   $ 2.5 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [3],[4],[13]   0.2 [3],[4],[13]   2.5 [6],[7],[14]                
Investment, Identifier [Axis]: Petrus Buyer, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.7   2.7   2.7                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.7   2.7   2.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.7   $ 2.7   $ 2.7                
Investment, Identifier [Axis]: Petrus Buyer, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.52% [1]   11.52% [1]   10.70% [2] 11.52% [1] 11.52% [1] 11.52% [1] 11.52% [1] 10.70% [2] 10.70% [2] 10.70% [2] 10.70% [2]
Total first lien senior secured loans $ 5.0 [3],[4]   $ 5.0 [3],[4]   $ 5.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 5.0 [3],[4]   5.0 [3],[4]   4.9 [6],[7]                
Investment, Identifier [Axis]: Petvisor Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 31.8   31.8   37.6                
Less: funded commitments (0.9)   (0.9)   0.0                
Total unfunded commitments 30.9   30.9   37.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 30.9   $ 30.9   $ 37.6                
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.21%         10.21% 10.21% 10.21% 10.21%
Total first lien senior secured loans [6],[7]         $ 21.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         21.5                
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.70%   10.70%     10.70% 10.70% 10.70% 10.70%        
Total first lien senior secured loans [3],[4] $ 5.9   $ 5.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 5.9   $ 5.9                    
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.19%   10.19%     10.19% 10.19% 10.19% 10.19%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.1   $ 0.1                    
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.75%   12.75%     12.75% 12.75% 12.75% 12.75%        
Total first lien senior secured loans [3],[4] $ 0.9   $ 0.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.9   0.9                    
Investment, Identifier [Axis]: Ping Identity Holding Corp.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.2   0.2   0.2                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.2   0.2   0.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.2   $ 0.2   $ 0.2                
Investment, Identifier [Axis]: Ping Identity Holding Corp., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.08% [1]   12.08% [1]   11.32% [2] 12.08% [1] 12.08% [1] 12.08% [1] 12.08% [1] 11.32% [2] 11.32% [2] 11.32% [2] 11.32% [2]
Total first lien senior secured loans $ 11.3 [3],[4]   $ 11.3 [3],[4]   $ 11.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 11.3 [3],[4]   11.3 [3],[4]   11.0 [6],[7]                
Investment, Identifier [Axis]: Piper Jaffray Merchant Banking Fund I, L.P., Limited partnership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.5 [5],[11]   0.5 [5],[11]   0.5 [8],[12]                
Investment, Identifier [Axis]: Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC, Co-Invest units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.3 [4]   $ 0.3 [4]   $ 0.5 [7]                
Investment, Identifier [Axis]: Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.27% [1]   9.27% [1]   8.41% [2] 9.27% [1] 9.27% [1] 9.27% [1] 9.27% [1] 8.41% [2] 8.41% [2] 8.41% [2] 8.41% [2]
Total first lien senior secured loans $ 22.5 [3],[4],[11]   $ 22.5 [3],[4],[11]   $ 22.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 19.4 [3],[4],[11]   $ 19.4 [3],[4],[11]   $ 20.1 [6],[7]                
Investment, Identifier [Axis]: Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.56% [1]   12.56% [1]   11.98% [2] 12.56% [1] 12.56% [1] 12.56% [1] 12.56% [1] 11.98% [2] 11.98% [2] 11.98% [2] 11.98% [2]
Total first lien senior secured loans $ 55.0 [3],[4]   $ 55.0 [3],[4]   $ 55.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 47.3 [3],[4]   47.3 [3],[4]   48.9 [6],[7]                
Investment, Identifier [Axis]: Pluralsight, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.3   0.3   0.3                
Less: funded commitments (0.2)   (0.2)   (0.2)                
Total unfunded commitments 0.1   0.1   0.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.1   $ 0.1   $ 0.1                
Investment, Identifier [Axis]: Pluralsight, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.04% [1]   13.04% [1]   11.83% [2] 13.04% [1] 13.04% [1] 13.04% [1] 13.04% [1] 11.83% [2] 11.83% [2] 11.83% [2] 11.83% [2]
Total first lien senior secured loans $ 106.2 [3],[4]   $ 106.2 [3],[4]   $ 106.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 103.0 [3],[4]   $ 103.0 [3],[4]   $ 104.0 [6],[7]                
Investment, Identifier [Axis]: Pluralsight, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.04% [1]   13.04% [1]   12.36% [2] 13.04% [1] 13.04% [1] 13.04% [1] 13.04% [1] 12.36% [2] 12.36% [2] 12.36% [2] 12.36% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Polymer Solutions Group, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         8.92%         8.92% 8.92% 8.92% 8.92%
Total first lien senior secured loans [6],[7]         $ 0.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.0                
Investment, Identifier [Axis]: Poplicus Incorporated, Warrant to purchase shares of Series C preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: PosiGen, Inc., Warrant to purchase shares of common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: PosiGen, Inc., Warrant to purchase shares of series D-1 preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: Potomac Intermediate Holdings II LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   6.0                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     (16.7)   (42.4)                
Fair Value 126.6   126.6   143.2                
Investment, Identifier [Axis]: Potomac Intermediate Holdings II LLC, Series A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 126.6   126.6   143.2                
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 26.0 [4]   $ 26.0 [4]   $ 26.5 [7]                
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.20% [1]   11.20% [1]   10.42% [2] 11.20% [1] 11.20% [1] 11.20% [1] 11.20% [1] 10.42% [2] 10.42% [2] 10.42% [2] 10.42% [2]
Total first lien senior secured loans $ 11.6 [3],[4],[5]   $ 11.6 [3],[4],[5]   $ 11.7 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 11.4 [3],[4],[5]   $ 11.4 [3],[4],[5]   $ 11.4 [6],[7],[8]                
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.20% [1]   11.20% [1]   10.42% [2] 11.20% [1] 11.20% [1] 11.20% [1] 11.20% [1] 10.42% [2] 10.42% [2] 10.42% [2] 10.42% [2]
Total first lien senior secured loans $ 4.0 [3],[4],[5]   $ 4.0 [3],[4],[5]   $ 4.0 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.9 [3],[4],[5]   3.9 [3],[4],[5]   3.9 [6],[7],[8]                
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 19.2   19.2   19.2                
Less: funded commitments (8.2)   (8.2)   (6.2)                
Total unfunded commitments 11.0   11.0   13.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 11.0   $ 11.0   $ 13.0                
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.84% [1]   10.84% [1]   10.18% [2] 10.84% [1] 10.84% [1] 10.84% [1] 10.84% [1] 10.18% [2] 10.18% [2] 10.18% [2] 10.18% [2]
Total first lien senior secured loans $ 14.6 [3],[4],[5]   $ 14.6 [3],[4],[5]   $ 14.7 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 14.6 [3],[4],[5]   $ 14.6 [3],[4],[5]   $ 14.7 [6],[7],[8]                
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.84% [1]   10.84% [1]   10.43% [2] 10.84% [1] 10.84% [1] 10.84% [1] 10.84% [1] 10.43% [2] 10.43% [2] 10.43% [2] 10.43% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [6],[7],[8]                
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.09% [1]   11.09% [1]   10.18% [2] 11.09% [1] 11.09% [1] 11.09% [1] 11.09% [1] 10.18% [2] 10.18% [2] 10.18% [2] 10.18% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [6],[7],[8]                
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.84% [1]   10.84% [1]   10.18% [2] 10.84% [1] 10.84% [1] 10.84% [1] 10.84% [1] 10.18% [2] 10.18% [2] 10.18% [2] 10.18% [2]
Total first lien senior secured loans $ 8.2 [3],[4],[5]   $ 8.2 [3],[4],[5]   $ 6.2 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 8.2 [3],[4],[5]   8.2 [3],[4],[5]   6.2 [6],[7],[8]                
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 11.0   11.0   11.0                
Less: funded commitments (3.5)   (3.5)   (2.3)                
Total unfunded commitments 7.5   7.5   8.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 7.5   $ 7.5   $ 8.7                
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.20% [1]   11.20% [1]   10.38% [2] 11.20% [1] 11.20% [1] 11.20% [1] 11.20% [1] 10.38% [2] 10.38% [2] 10.38% [2] 10.38% [2]
Total first lien senior secured loans $ 27.1 [3],[4]   $ 27.1 [3],[4]   $ 27.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 23.6 [3],[4]   $ 23.6 [3],[4]   $ 25.6 [6],[7]                
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.20% [1]   11.20% [1]   10.38% [2] 11.20% [1] 11.20% [1] 11.20% [1] 11.20% [1] 10.38% [2] 10.38% [2] 10.38% [2] 10.38% [2]
Total first lien senior secured loans $ 3.5 [3],[4]   $ 3.5 [3],[4]   $ 2.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.0 [3],[4]   3.0 [3],[4]   2.2 [6],[7]                
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P., Limited partner interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.1 [4]   2.1 [4]   2.8 [7]                
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 36.0   36.0   36.0                
Less: funded commitments (0.6)   (0.6)   (0.6)                
Total unfunded commitments 35.4   35.4   35.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 35.4   35.4   35.4                
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 11.1 [4]   $ 11.1 [4]   $ 12.8 [7]                
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.34% [1]   9.34% [1]   7.92% [2] 9.34% [1] 9.34% [1] 9.34% [1] 9.34% [1] 7.92% [2] 7.92% [2] 7.92% [2] 7.92% [2]
Total first lien senior secured loans $ 8.5 [3],[4]   $ 8.5 [3],[4]   $ 8.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 8.1 [3],[4]   8.1 [3],[4]   8.1 [6],[7]                
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 0.0 [16]   0.0 [16]   0.0 [15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [16]   $ 0.0 [16]   $ 0.0 [15]                
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.09% [1]   13.09% [1]   11.67% [2] 13.09% [1] 13.09% [1] 13.09% [1] 13.09% [1] 11.67% [2] 11.67% [2] 11.67% [2] 11.67% [2]
Total first lien senior secured loans $ 67.1 [4]   $ 67.1 [4]   $ 67.1 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 63.1 [4]   63.1 [4]   64.4 [7]                
Investment, Identifier [Axis]: Prime Buyer, L.L.C.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 15.9   15.9   15.9                
Less: funded commitments (0.7)   (0.7)   (2.7)                
Total unfunded commitments 15.2   15.2   13.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 15.2   $ 15.2   $ 13.2                
Investment, Identifier [Axis]: Prime Buyer, L.L.C., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.45% [1]   10.45% [1]   9.88% [2] 10.45% [1] 10.45% [1] 10.45% [1] 10.45% [1] 9.88% [2] 9.88% [2] 9.88% [2] 9.88% [2]
Total first lien senior secured loans $ 0.7 [3],[4]   $ 0.7 [3],[4]   $ 2.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.6 [3],[4]   $ 0.6 [3],[4]   2.6 [6],[7]                
Investment, Identifier [Axis]: Primrose Holding Corporation                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)         0.0                
Redemptions (cost)         0.0                
Sales (cost)         4.6                
Interest income         0.0                
Capital structuring service fees         0.0                
Dividend income         0.0                
Other income         0.0                
Net realized gains (losses):         28.9                
Net unrealized gains (losses):         (22.4)                
Fair Value         $ 0.0                
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.23% [1]   11.23% [1]   10.48% [2] 11.23% [1] 11.23% [1] 11.23% [1] 11.23% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 0.7 [3],[4],[5]   $ 0.7 [3],[4],[5]   $ 0.7 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.7 [3],[4],[5]   $ 0.7 [3],[4],[5]   $ 0.7 [6],[7],[8]                
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., Senior preferred stock                          
Schedule of Investments [Line Items]                          
Coupon 17.55% [1]   17.55% [1]   16.73% [2] 17.55% [1] 17.55% [1] 17.55% [1] 17.55% [1] 16.73% [2] 16.73% [2] 16.73% [2] 16.73% [2]
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 75.8 [3],[4],[5]   $ 75.8 [3],[4],[5]   $ 73.2 [7],[8]                
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., Warrant to purchase shares of common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.9 [4],[5],[11]   1.9 [4],[5],[11]   2.8 [7],[8],[12]                
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         3.3                
Less: funded commitments         0.0                
Total unfunded commitments         3.3                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         3.3                
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.5 [4]   $ 6.5 [4]   $ 8.4 [7]                
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.47%         10.47% 10.47% 10.47% 10.47%
Total first lien senior secured loans [6],[7]         $ 65.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         63.1                
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.09%   11.09%     11.09% 11.09% 11.09% 11.09%        
Total first lien senior secured loans [3],[4] $ 57.5   $ 57.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 55.8   $ 55.8                    
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.70%   10.70%     10.70% 10.70% 10.70% 10.70%        
Total first lien senior secured loans [3],[4] $ 7.2   $ 7.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 6.9   $ 6.9                    
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.05%   11.05%     11.05% 11.05% 11.05% 11.05%        
Total first lien senior secured loans [3],[4] $ 3.3   $ 3.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 3.2   3.2                    
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   2.5                
Redemptions (cost)     0.7   0.3                
Sales (cost)     0.0   0.0                
Interest income     5.2   7.0                
Capital structuring service fees     0.0   0.1                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     12.0   33.6                
Fair Value 111.0   111.0   97.3                
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 46.3 [4]   $ 46.3 [4]   $ 34.3 [7]                
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon 13.69% [1]   13.69% [1]   12.85% [2] 13.69% [1] 13.69% [1] 13.69% [1] 13.69% [1] 12.85% [2] 12.85% [2] 12.85% [2] 12.85% [2]
Total first lien senior secured loans $ 41.1 [3],[4]   $ 41.1 [3],[4]   $ 39.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 41.1 [3],[4]   $ 41.1 [3],[4]   $ 39.1 [6],[7]                
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon 10.19% [1]   10.19% [1]   11.85% [2] 10.19% [1] 10.19% [1] 10.19% [1] 10.19% [1] 11.85% [2] 11.85% [2] 11.85% [2] 11.85% [2]
Total first lien senior secured loans $ 15.3 [3],[4]   $ 15.3 [3],[4]   $ 15.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 15.3 [3],[4]   $ 15.3 [3],[4]   $ 15.4 [6],[7]                
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon 12.70% [1]   12.70% [1]   11.88% [2] 12.70% [1] 12.70% [1] 12.70% [1] 12.70% [1] 11.88% [2] 11.88% [2] 11.88% [2] 11.88% [2]
Total first lien senior secured loans $ 0.9 [3],[4]   $ 0.9 [3],[4]   $ 7.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.9 [3],[4]   $ 0.9 [3],[4]   $ 7.6 [6],[7]                
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon 12.70% [1]   12.70% [1]   11.88% [2] 12.70% [1] 12.70% [1] 12.70% [1] 12.70% [1] 11.88% [2] 11.88% [2] 11.88% [2] 11.88% [2]
Total first lien senior secured loans $ 7.5 [3],[4]   $ 7.5 [3],[4]   $ 0.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 7.5 [3],[4]   7.5 [3],[4]   0.9 [6],[7]                
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         0.1                
Less: funded commitments         0.0                
Total unfunded commitments         0.1                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         0.1                
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 18.2 [4]   18.2 [4]   17.1 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 18.2 [4]   18.2 [4]   $ 17.1 [7]                
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         14.00%         14.00% 14.00% 14.00% 14.00%
Total first lien senior secured loans 0.2 [4]   0.2 [4]   $ 0.1 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [4]   0.2 [4]   0.1 [7]                
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Series E preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.7 [4]   0.7 [4]   0.6 [7]                
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Warrant to purchase shares of common stock 1                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.4 [4]   1.4 [4]   0.8 [7]                
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Warrant to purchase shares of common stock 2                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [4]   0.2 [4]   0.2 [7]                
Investment, Identifier [Axis]: ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.1   0.1   13.3                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.1   0.1   13.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.1   $ 0.1   $ 13.3                
Investment, Identifier [Axis]: ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   10.23% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 10.23% [2] 10.23% [2] 10.23% [2] 10.23% [2]
Total first lien senior secured loans $ 9.9 [3],[4]   $ 9.9 [3],[4]   $ 5.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 9.7 [3],[4]   9.7 [3],[4]   5.4 [6],[7]                
Investment, Identifier [Axis]: ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P., Limited partnership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.6 [4]   1.6 [4]   1.5 [7]                
Investment, Identifier [Axis]: Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc., Class A common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 15.3 [4]   15.3 [4]   14.4 [7]                
Investment, Identifier [Axis]: Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc., Class B common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [4]   $ 0.2 [4]   $ 0.1 [7]                
Investment, Identifier [Axis]: Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.20% [1]   9.20% [1]   8.39% [2] 9.20% [1] 9.20% [1] 9.20% [1] 9.20% [1] 8.39% [2] 8.39% [2] 8.39% [2] 8.39% [2]
Total first lien senior secured loans $ 2.8 [4],[11]   $ 2.8 [4],[11]   $ 2.8 [7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.8 [4],[11]   2.8 [4],[11]   2.8 [7],[12]                
Investment, Identifier [Axis]: Project Essential Bidco, Inc. and Project Essential Super Parent, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.1   1.1   1.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 1.1   1.1   1.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.1   $ 1.1   $ 1.1                
Investment, Identifier [Axis]: Project Essential Bidco, Inc. and Project Essential Super Parent, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.43% [1]   11.43% [1]   9.99% [2] 11.43% [1] 11.43% [1] 11.43% [1] 11.43% [1] 9.99% [2] 9.99% [2] 9.99% [2] 9.99% [2]
Total first lien senior secured loans $ 36.1 [3],[4]   $ 36.1 [3],[4]   $ 36.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 35.0 [3],[4]   35.0 [3],[4]   34.7 [6],[7]                
Investment, Identifier [Axis]: Project Essential Bidco, Inc. and Project Essential Super Parent, Inc., Preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 32.6 [4]   32.6 [4]   30.2 [7]                
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.5   5.5   5.5                
Less: funded commitments (2.1)   (2.1)   (2.1)                
Total unfunded commitments 3.4   3.4   3.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.4   3.4   3.4                
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., Class B units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.1 [4]   $ 5.1 [4]   $ 9.3 [7]                
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.35% [1]   12.35% [1]   12.07% [2] 12.35% [1] 12.35% [1] 12.35% [1] 12.35% [1] 12.07% [2] 12.07% [2] 12.07% [2] 12.07% [2]
Total first lien senior secured loans $ 43.4 [3],[4]   $ 43.4 [3],[4]   $ 43.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 43.4 [3],[4]   $ 43.4 [3],[4]   $ 43.6 [6],[7]                
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.35% [1]   12.35% [1]   12.07% [2] 12.35% [1] 12.35% [1] 12.35% [1] 12.35% [1] 12.07% [2] 12.07% [2] 12.07% [2] 12.07% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 14.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 14.3 [6],[7]                
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.35% [1]   12.35% [1]   12.07% [2] 12.35% [1] 12.35% [1] 12.35% [1] 12.35% [1] 12.07% [2] 12.07% [2] 12.07% [2] 12.07% [2]
Total first lien senior secured loans $ 11.9 [3],[4]   $ 11.9 [3],[4]   $ 12.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 11.9 [3],[4]   $ 11.9 [3],[4]   $ 12.8 [6],[7]                
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.07%         12.07% 12.07% 12.07% 12.07%
Total first lien senior secured loans [6],[7]         $ 4.9                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 4.9                
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.35% [1]   12.35% [1]   12.07% [2] 12.35% [1] 12.35% [1] 12.35% [1] 12.35% [1] 12.07% [2] 12.07% [2] 12.07% [2] 12.07% [2]
Total first lien senior secured loans $ 2.1 [3],[4]   $ 2.1 [3],[4]   $ 2.1 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.1 [3],[4]   $ 2.1 [3],[4]   $ 2.1 [6],[7],[14]                
Investment, Identifier [Axis]: Project Ruby Ultimate Parent Corp., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.72% [1]   11.72% [1]   10.88% [2] 11.72% [1] 11.72% [1] 11.72% [1] 11.72% [1] 10.88% [2] 10.88% [2] 10.88% [2] 10.88% [2]
Total first lien senior secured loans $ 193.1 [3],[4]   $ 193.1 [3],[4]   $ 193.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 183.4 [3],[4]   183.4 [3],[4]   181.5 [6],[7]                
Investment, Identifier [Axis]: Proofpoint, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.1   3.1   3.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 3.1   3.1   3.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.1   $ 3.1   $ 3.1                
Investment, Identifier [Axis]: Proofpoint, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.47% [1]   8.47% [1]   7.98% [2] 8.47% [1] 8.47% [1] 8.47% [1] 8.47% [1] 7.98% [2] 7.98% [2] 7.98% [2] 7.98% [2]
Total first lien senior secured loans $ 1.0 [3],[4],[11]   $ 1.0 [3],[4],[11]   $ 1.0 [6],[7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.0 [3],[4],[11]   $ 1.0 [3],[4],[11]   $ 0.9 [6],[7],[12]                
Investment, Identifier [Axis]: Proofpoint, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.47% [1]   11.47% [1]   10.98% [2] 11.47% [1] 11.47% [1] 11.47% [1] 11.47% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 34.6 [3],[4]   $ 34.6 [3],[4]   $ 34.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 34.6 [3],[4]   34.6 [3],[4]   34.6 [6],[7]                
Investment, Identifier [Axis]: Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         3.6                
Less: funded commitments         0.0                
Total unfunded commitments         3.6                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         3.6                
Investment, Identifier [Axis]: Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 11.0                
Investment, Identifier [Axis]: Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.47%         10.47% 10.47% 10.47% 10.47%
Total first lien senior secured loans [6],[7]         $ 1.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         1.4                
Investment, Identifier [Axis]: PushPay USA Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.6   3.6                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 3.6   3.6                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.6   $ 3.6                    
Investment, Identifier [Axis]: PushPay USA Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.97%   11.97%     11.97% 11.97% 11.97% 11.97%        
Total first lien senior secured loans [3],[4] $ 12.7   $ 12.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 12.4   12.4                    
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         9.8                
Less: funded commitments         (9.8)                
Total unfunded commitments         0.0                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 0.0                
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.63%         11.63% 11.63% 11.63% 11.63%
Total first lien senior secured loans [6],[7]         $ 16.9                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 16.9                
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.63%         11.63% 11.63% 11.63% 11.63%
Total first lien senior secured loans [6],[7]         $ 0.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 0.1                
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.60%         11.60% 11.60% 11.60% 11.60%
Total first lien senior secured loans [6],[7],[14]         $ 9.7                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[14]         9.7                
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, Preferred membership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.9                
Investment, Identifier [Axis]: Pyramid-BMC IntermediateCo I, LLC and Pyramid Investors, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.6   1.6                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 1.6   1.6                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.6   $ 1.6                    
Investment, Identifier [Axis]: Pyramid-BMC IntermediateCo I, LLC and Pyramid Investors, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.08%   13.08%     13.08% 13.08% 13.08% 13.08%        
Total first lien senior secured loans [3],[4] $ 7.7   $ 7.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 7.7   7.7                    
Investment, Identifier [Axis]: Pyramid-BMC IntermediateCo I, LLC and Pyramid Investors, LLC, Preferred membership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.0   1.0                    
Investment, Identifier [Axis]: QF Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.1   1.1   2.3                
Less: funded commitments (0.3)   (0.3)   0.0                
Total unfunded commitments 0.8   0.8   2.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.8   $ 0.8   $ 2.3                
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.45% [1]   11.45% [1]   11.02% [2] 11.45% [1] 11.45% [1] 11.45% [1] 11.45% [1] 11.02% [2] 11.02% [2] 11.02% [2] 11.02% [2]
Total first lien senior secured loans $ 6.8 [3],[4]   $ 6.8 [3],[4]   $ 8.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.8 [3],[4]   $ 6.8 [3],[4]   $ 8.1 [6],[7]                
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.46% [1]   11.46% [1]   10.43% [2] 11.46% [1] 11.46% [1] 11.46% [1] 11.46% [1] 10.43% [2] 10.43% [2] 10.43% [2] 10.43% [2]
Total first lien senior secured loans $ 4.9 [3],[4]   $ 4.9 [3],[4]   $ 6.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.9 [3],[4]   $ 4.9 [3],[4]   $ 6.8 [6],[7]                
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.45% [1]   11.45% [1]   10.64% [2] 11.45% [1] 11.45% [1] 11.45% [1] 11.45% [1] 10.64% [2] 10.64% [2] 10.64% [2] 10.64% [2]
Total first lien senior secured loans $ 8.1 [3],[4]   $ 8.1 [3],[4]   $ 3.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 8.1 [3],[4]   $ 8.1 [3],[4]   3.7 [6],[7]                
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.47%   11.47%     11.47% 11.47% 11.47% 11.47%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.3   0.3                    
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.7   2.7   2.8                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.7   2.7   2.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.7   $ 2.7   $ 2.8                
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.11%         11.11% 11.11% 11.11% 11.11%
Total first lien senior secured loans [6],[7]         $ 10.6                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         10.3                
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.08%   12.08%     12.08% 12.08% 12.08% 12.08%        
Total first lien senior secured loans [3],[4] $ 10.6   $ 10.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 10.6   $ 10.6                    
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.13%   12.13%     12.13% 12.13% 12.13% 12.13%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.1   0.1                    
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP, Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 11.5 [4]   11.5 [4]   9.9 [7]                
Investment, Identifier [Axis]: R2 Acquisition Corp., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [4]   0.2 [4]   0.1 [7]                
Investment, Identifier [Axis]: RB Holdings InterCo, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.6   5.6   5.6                
Less: funded commitments (1.8)   (1.8)   (1.8)                
Total unfunded commitments 3.8   3.8   3.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.8   $ 3.8   $ 3.8                
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.22% [1]   10.22% [1]   9.32% [2] 10.22% [1] 10.22% [1] 10.22% [1] 10.22% [1] 9.32% [2] 9.32% [2] 9.32% [2] 9.32% [2]
Total first lien senior secured loans $ 11.4 [3],[4]   $ 11.4 [3],[4]   $ 11.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 11.4 [3],[4]   $ 11.4 [3],[4]   $ 11.2 [6],[7]                
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.28%         9.28% 9.28% 9.28% 9.28%
Total first lien senior secured loans [6],[7]         $ 1.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         1.7                
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.38%   10.38%     10.38% 10.38% 10.38% 10.38%        
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.7   $ 0.7                    
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.23%   10.23%     10.23% 10.23% 10.23% 10.23%        
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.4   $ 0.4                    
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.14%   10.14%     10.14% 10.14% 10.14% 10.14%        
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.7   0.7                    
Investment, Identifier [Axis]: RC V Tecmo Investor LLC, Common member units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 23.0 [4]   23.0 [4]   22.9 [7]                
Investment, Identifier [Axis]: RD Holdco Inc.                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.9   0.0                
Redemptions (cost)     0.0   0.1                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     (0.4)   (10.6)                
Fair Value 12.2   12.2   10.3                
Investment, Identifier [Axis]: RD Holdco Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: RD Holdco Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [7],[10]         24.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[10]         10.2                
Investment, Identifier [Axis]: RD Holdco Inc., Second lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [4],[9] 26.0   26.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[9] 11.7   11.7                    
Investment, Identifier [Axis]: RD Holdco Inc., Second lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [3],[4] 1.0   1.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.5   0.5                    
Investment, Identifier [Axis]: RD Holdco Inc., Warrant to purchase shares of common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: RE Community Holdings GP, LLC and RE Community Holdings, LP, Limited partnership interest 1                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: RE Community Holdings GP, LLC and RE Community Holdings, LP, Limited partnership interest 2                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: RF HP SCF Investor, LLC, Membership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 27.5 [4],[5]   27.5 [4],[5]   25.9 [7],[8]                
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.9   2.9   2.9                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.9   2.9   2.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 2.9   2.9   2.9                
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., Class A common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.2 [4]   $ 5.2 [4]   $ 5.5 [7]                
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.49% [1]   11.49% [1]   10.98% [2] 11.49% [1] 11.49% [1] 11.49% [1] 11.49% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.2 [6],[7]                
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.48% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [3],[4]   0.2 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.6   0.6   0.6                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.6   0.6   0.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.6   $ 0.6   $ 0.6                
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.79%         9.79% 9.79% 9.79% 9.79%
Total first lien senior secured loans [6],[7]         $ 32.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         31.8                
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.91%   10.91%     10.91% 10.91% 10.91% 10.91%        
Total first lien senior secured loans [3],[4] $ 1.1   $ 1.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.1   $ 1.1                    
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.70%   10.70%     10.70% 10.70% 10.70% 10.70%        
Total first lien senior secured loans [3],[4] $ 29.2   $ 29.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 28.3   $ 28.3                    
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.89%   10.89%     10.89% 10.89% 10.89% 10.89%        
Total first lien senior secured loans [3],[4] $ 2.3   $ 2.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 2.2   2.2                    
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 15.9   15.9   15.9                
Less: funded commitments (7.3)   (7.3)   (9.8)                
Total unfunded commitments 8.6   8.6   6.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 8.6   $ 8.6   $ 6.1                
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.86% [1]   11.86% [1]   10.02% [2] 11.86% [1] 11.86% [1] 11.86% [1] 11.86% [1] 10.02% [2] 10.02% [2] 10.02% [2] 10.02% [2]
Total first lien senior secured loans $ 22.4 [3],[4]   $ 22.4 [3],[4]   $ 22.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 22.4 [3],[4]   $ 22.4 [3],[4]   $ 22.3 [6],[7]                
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.93% [1]   11.93% [1]   11.09% [2] 11.93% [1] 11.93% [1] 11.93% [1] 11.93% [1] 11.09% [2] 11.09% [2] 11.09% [2] 11.09% [2]
Total first lien senior secured loans $ 7.3 [3],[4]   $ 7.3 [3],[4]   $ 9.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 7.3 [3],[4]   $ 7.3 [3],[4]   9.7 [6],[7]                
Investment, Identifier [Axis]: Radiant Intermediate Holding, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.11%   11.11%     11.11% 11.11% 11.11% 11.11%        
Total first lien senior secured loans [3],[4] $ 2.1   $ 2.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 2.0   2.0                    
Investment, Identifier [Axis]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.8   2.8   2.8                
Less: funded commitments (0.5)   (0.5)   (0.7)                
Total unfunded commitments 2.3   2.3   2.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.3   $ 2.3   $ 2.1                
Investment, Identifier [Axis]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.00% [1]   11.00% [1]   8.68% [2] 11.00% [1] 11.00% [1] 11.00% [1] 11.00% [1] 8.68% [2] 8.68% [2] 8.68% [2] 8.68% [2]
Total first lien senior secured loans $ 0.2 [3],[4],[5]   $ 0.2 [3],[4],[5]   $ 0.4 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [3],[4],[5]   $ 0.2 [3],[4],[5]   $ 0.4 [6],[7],[8]                
Investment, Identifier [Axis]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.68% [1]   10.68% [1]   10.08% [2] 10.68% [1] 10.68% [1] 10.68% [1] 10.68% [1] 10.08% [2] 10.08% [2] 10.08% [2] 10.08% [2]
Total first lien senior secured loans $ 0.3 [3],[4],[5]   $ 0.3 [3],[4],[5]   $ 0.4 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.3 [3],[4],[5]   0.3 [3],[4],[5]   0.4 [6],[7],[8]                
Investment, Identifier [Axis]: Radwell Parent, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.4   4.4   4.4                
Less: funded commitments (0.9)   (0.9)   0.0                
Total unfunded commitments 3.5   3.5   4.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.5   $ 3.5   $ 4.4                
Investment, Identifier [Axis]: Radwell Parent, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.99% [1]   11.99% [1]   11.33% [2] 11.99% [1] 11.99% [1] 11.99% [1] 11.99% [1] 11.33% [2] 11.33% [2] 11.33% [2] 11.33% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 19.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   18.9 [6],[7]                
Investment, Identifier [Axis]: Radwell Parent, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.99%   11.99%     11.99% 11.99% 11.99% 11.99%        
Total first lien senior secured loans [3],[4] $ 0.9   $ 0.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.9   0.9                    
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.4   4.4   4.4                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 4.4   4.4   4.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 4.4   4.4   4.4                
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.1   $ 6.1   $ 5.9                
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.23%         10.23% 10.23% 10.23% 10.23%
Total first lien senior secured loans [6],[7],[8]         $ 8.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[8]         $ 8.2                
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.37%   11.37%     11.37% 11.37% 11.37% 11.37%        
Total first lien senior secured loans [3],[4] $ 8.5   $ 8.5                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 8.5   $ 8.5                    
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.37%   11.37%     11.37% 11.37% 11.37% 11.37%        
Total first lien senior secured loans [3],[4] $ 11.8   $ 11.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 11.8   $ 11.8                    
Investment, Identifier [Axis]: Rawlings Sporting Goods Company, Inc. and Easton Diamond Sports, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   11.48% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 11.48% [2] 11.48% [2] 11.48% [2] 11.48% [2]
Total first lien senior secured loans $ 49.5 [3],[4]   $ 49.5 [3],[4]   $ 49.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 49.5 [3],[4]   $ 49.5 [3],[4]   $ 49.7 [6],[7]                
Investment, Identifier [Axis]: Rawlings Sporting Goods Company, Inc. and Easton Diamond Sports, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.41% [1]   11.41% [1]   11.48% [2] 11.41% [1] 11.41% [1] 11.41% [1] 11.41% [1] 11.48% [2] 11.48% [2] 11.48% [2] 11.48% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: RealPage, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.65% [1]   11.65% [1]   10.88% [2] 11.65% [1] 11.65% [1] 11.65% [1] 11.65% [1] 10.88% [2] 10.88% [2] 10.88% [2] 10.88% [2]
Total first lien senior secured loans $ 84.1 [3],[4]   $ 84.1 [3],[4]   $ 84.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 82.4 [3],[4]   82.4 [3],[4]   82.4 [6],[7]                
Investment, Identifier [Axis]: Reddy Ice LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.3   1.3   0.2                
Less: funded commitments (1.2)   (1.2)   0.0                
Total unfunded commitments 0.1   0.1   0.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.1   $ 0.1   $ 0.2                
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.72% [1]   11.72% [1]   10.24% [2] 11.72% [1] 11.72% [1] 11.72% [1] 11.72% [1] 10.24% [2] 10.24% [2] 10.24% [2] 10.24% [2]
Total first lien senior secured loans $ 60.9 [3],[4]   $ 60.9 [3],[4]   $ 61.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 60.3 [3],[4]   $ 60.3 [3],[4]   $ 60.0 [6],[7]                
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.22% [1]   11.22% [1]   10.24% [2] 11.22% [1] 11.22% [1] 11.22% [1] 11.22% [1] 10.24% [2] 10.24% [2] 10.24% [2] 10.24% [2]
Total first lien senior secured loans $ 4.2 [3],[4]   $ 4.2 [3],[4]   $ 4.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.2 [3],[4]   $ 4.2 [3],[4]   $ 4.2 [6],[7]                
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.22% [1]   11.22% [1]   10.24% [2] 11.22% [1] 11.22% [1] 11.22% [1] 11.22% [1] 10.24% [2] 10.24% [2] 10.24% [2] 10.24% [2]
Total first lien senior secured loans $ 0.9 [3],[4]   $ 0.9 [3],[4]   $ 0.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.9 [3],[4]   $ 0.9 [3],[4]   0.9 [6],[7]                
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.25%   13.25%     13.25% 13.25% 13.25% 13.25%        
Total first lien senior secured loans [3],[4] $ 1.3   $ 1.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 1.2   1.2                    
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.5   12.5   4.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 12.5   12.5   4.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 12.5   $ 12.5   $ 4.5                
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.70% [1]   11.70% [1]   11.17% [2] 11.70% [1] 11.70% [1] 11.70% [1] 11.70% [1] 11.17% [2] 11.17% [2] 11.17% [2] 11.17% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.8 [6],[7]                
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.70% [1]   11.70% [1]   11.17% [2] 11.70% [1] 11.70% [1] 11.70% [1] 11.70% [1] 11.17% [2] 11.17% [2] 11.17% [2] 11.17% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.70% [1]   11.70% [1]   11.17% [2] 11.70% [1] 11.70% [1] 11.70% [1] 11.70% [1] 11.17% [2] 11.17% [2] 11.17% [2] 11.17% [2]
Total first lien senior secured loans $ 1.4 [3],[4]   $ 1.4 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.4 [3],[4]   1.4 [3],[4]   0.2 [6],[7]                
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, Series D units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 42.0   42.0   33.9                
Investment, Identifier [Axis]: Reef Lifestyle, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 53.5   53.5   37.7                
Less: funded commitments (49.1)   (49.1)   (37.7)                
Total unfunded commitments 4.4   4.4   0.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 4.4   $ 4.4   $ 0.0                
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon 15.26% [1]   15.26% [1]   12.74% [2] 15.26% [1] 15.26% [1] 15.26% [1] 15.26% [1] 12.74% [2] 12.74% [2] 12.74% [2] 12.74% [2]
Total first lien senior secured loans $ 23.0 [3],[4]   $ 23.0 [3],[4]   $ 23.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 20.7 [3],[4]   $ 20.7 [3],[4]   $ 22.9 [6],[7]                
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon 15.26% [1]   15.26% [1]   10.15% [2] 15.26% [1] 15.26% [1] 15.26% [1] 15.26% [1] 10.15% [2] 10.15% [2] 10.15% [2] 10.15% [2]
Total first lien senior secured loans $ 1.8 [3],[4]   $ 1.8 [3],[4]   $ 1.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.6 [3],[4]   $ 1.6 [3],[4]   $ 1.3 [6],[7]                
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon 15.23% [1]   15.23% [1]   14.50% [2] 15.23% [1] 15.23% [1] 15.23% [1] 15.23% [1] 14.50% [2] 14.50% [2] 14.50% [2] 14.50% [2]
Total first lien senior secured loans $ 26.7 [3],[4],[13]   $ 26.7 [3],[4],[13]   $ 35.5 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 24.0 [3],[4],[13]   $ 24.0 [3],[4],[13]   $ 34.4 [6],[7],[14]                
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon 10.83% [1]   10.83% [1]   14.32% [2] 10.83% [1] 10.83% [1] 10.83% [1] 10.83% [1] 14.32% [2] 14.32% [2] 14.32% [2] 14.32% [2]
Total first lien senior secured loans $ 2.2 [3],[4],[13]   $ 2.2 [3],[4],[13]   $ 1.0 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.0 [3],[4],[13]   $ 2.0 [3],[4],[13]   1.0 [6],[7],[14]                
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 3                          
Schedule of Investments [Line Items]                          
Coupon [1] 2.00%   2.00%     2.00% 2.00% 2.00% 2.00%        
Total first lien senior secured loans [3],[4],[13] $ 16.3   $ 16.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[13] $ 14.7   $ 14.7                    
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 4                          
Schedule of Investments [Line Items]                          
Coupon [1] 15.26%   15.26%     15.26% 15.26% 15.26% 15.26%        
Total first lien senior secured loans [3],[4],[13] $ 2.0   $ 2.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[13] 1.8   1.8                    
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase shares of common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0   0.0                    
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase shares of common stock 1                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.0                
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase shares of common stock 2                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         0.0                
Investment, Identifier [Axis]: Registrar Intermediate, LLC and PSP Registrar Co-Investment Fund, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 28.0   28.0   28.0                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 28.0   28.0   28.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 28.0   $ 28.0   $ 28.0                
Investment, Identifier [Axis]: Registrar Intermediate, LLC and PSP Registrar Co-Investment Fund, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.55% [1]   10.55% [1]   9.38% [2] 10.55% [1] 10.55% [1] 10.55% [1] 10.55% [1] 9.38% [2] 9.38% [2] 9.38% [2] 9.38% [2]
Total first lien senior secured loans $ 2.7 [3],[4]   $ 2.7 [3],[4]   $ 2.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7 [3],[4]   2.7 [3],[4]   2.7 [6],[7]                
Investment, Identifier [Axis]: Registrar Intermediate, LLC and PSP Registrar Co-Investment Fund, L.P., Limited partner interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.6 [4]   2.6 [4]   2.6 [7]                
Investment, Identifier [Axis]: Relativity ODA LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.8   3.8   3.8                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 3.8   3.8   3.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.8   3.8   3.8                
Investment, Identifier [Axis]: Relativity ODA LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 23.0 [3],[4]   23.0 [3],[4]   22.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 23.0 [3],[4]   23.0 [3],[4]   22.5 [6],[7]                
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.3   7.3   7.3                
Less: funded commitments (3.6)   (3.6)   0.0                
Total unfunded commitments 3.7   3.7   7.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.7   3.7   7.3                
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.3 [4]   $ 4.3 [4]   4.4 [7]                
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.28%   10.28%     10.28% 10.28% 10.28% 10.28%        
Total first lien senior secured loans [3],[4] $ 1.2   $ 1.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.2   $ 1.2                    
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.19%   10.19%     10.19% 10.19% 10.19% 10.19%        
Total first lien senior secured loans [3],[4] $ 2.4   $ 2.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 2.3   2.3                    
Investment, Identifier [Axis]: Revalize, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.9   0.9   0.9                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.9   0.9   0.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.9   $ 0.9   $ 0.9                
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.95%   10.95%     10.95% 10.95% 10.95% 10.95%        
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.7   0.7                    
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.48%         10.48% 10.48% 10.48% 10.48%
Total first lien senior secured loans [6],[7]         $ 0.7                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 0.6                
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.46%         10.46% 10.46% 10.46% 10.46%
Total first lien senior secured loans [7]         $ 0.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         0.0                
Investment, Identifier [Axis]: Rialto Management Group, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.3   1.3   1.3                
Less: funded commitments (0.3)   (0.3)   (0.2)                
Total unfunded commitments 1.0   1.0   1.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.0   $ 1.0   $ 1.1                
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.88% 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.88% 9.88% 9.88% 9.88%
Total first lien senior secured loans $ 0.3 [3],[4],[5]   $ 0.3 [3],[4],[5]   $ 0.3 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.3 [3],[4],[5]   $ 0.3 [3],[4],[5]   $ 0.3 [7],[8]                
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.88% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.88% [2] 9.88% [2] 9.88% [2] 9.88% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [7],[8]                
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.88% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.88% [2] 9.88% [2] 9.88% [2] 9.88% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4],[5]   0.1 [3],[4],[5]   0.1 [7],[8]                
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 0.0 [16]   0.0 [16]   0.0 [8],[15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [16]   0.0 [16]   0.0 [8],[15]                
Investment, Identifier [Axis]: Riser Merger Sub, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.3   2.3   2.8                
Less: funded commitments (0.3)   (0.3)   0.0                
Total unfunded commitments 2.0   2.0   2.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.0   $ 2.0   $ 2.8                
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.33%         9.33% 9.33% 9.33% 9.33%
Total first lien senior secured loans [6],[7]         $ 0.7                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.7                
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.12%   11.12%     11.12% 11.12% 11.12% 11.12%        
Total first lien senior secured loans [3],[4] $ 1.7   $ 1.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.7   $ 1.7                    
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.68%   10.68%     10.68% 10.68% 10.68% 10.68%        
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.7   $ 0.7                    
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.58%   11.58%     11.58% 11.58% 11.58% 11.58%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.1   $ 0.1                    
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.13%   13.13%     13.13% 13.13% 13.13% 13.13%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.3   $ 0.3                    
Investment, Identifier [Axis]: Riverview Power LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         8.9                
Less: funded commitments         0.0                
Total unfunded commitments         8.9                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 8.9                
Investment, Identifier [Axis]: Riverview Power LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.39% [1]   14.39% [1]   13.73% [2] 14.39% [1] 14.39% [1] 14.39% [1] 14.39% [1] 13.73% [2] 13.73% [2] 13.73% [2] 13.73% [2]
Total first lien senior secured loans $ 40.9 [3],[4]   $ 40.9 [3],[4]   $ 57.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 40.9 [3],[4]   40.9 [3],[4]   57.6 [6],[7]                
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 6.2   6.2   6.2                
Less: funded commitments (1.7)   (1.7)   (1.3)                
Total unfunded commitments 4.5   4.5   4.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 4.5   $ 4.5   $ 4.9                
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.48% [1]   11.48% [1]   10.38% [2] 11.48% [1] 11.48% [1] 11.48% [1] 11.48% [1] 10.38% [2] 10.38% [2] 10.38% [2] 10.38% [2]
Total first lien senior secured loans $ 16.8 [3],[4]   $ 16.8 [3],[4]   $ 16.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 16.0 [3],[4]   $ 16.0 [3],[4]   $ 16.1 [6],[7]                
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.44% [1]   11.44% [1]   10.38% [2] 11.44% [1] 11.44% [1] 11.44% [1] 11.44% [1] 10.38% [2] 10.38% [2] 10.38% [2] 10.38% [2]
Total first lien senior secured loans $ 1.7 [3],[4]   $ 1.7 [3],[4]   $ 1.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.6 [3],[4]   1.6 [3],[4]   1.2 [6],[7]                
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC)                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   0.0                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     0.1   (0.1)                
Fair Value 0.2   0.2   0.0                
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC), Class B common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2   0.2   0.0                
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC), Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC), Warrant to purchase units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: SCI PH Parent, Inc., Series B shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.8 [4]   1.8 [4]   4.2 [7]                
Investment, Identifier [Axis]: SCIH Salt Holdings Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.5   7.5   7.5                
Less: funded commitments 0.0   0.0   (2.6)                
Total unfunded commitments 7.5   7.5   4.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 7.5   7.5   $ 4.9                
Investment, Identifier [Axis]: SCIH Salt Holdings Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         8.15%         8.15% 8.15% 8.15% 8.15%
Total first lien senior secured loans [6],[7],[14]         $ 2.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[14]         2.2                
Investment, Identifier [Axis]: SCM Insurance Services Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.1   4.1   4.0                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 4.1   4.1   4.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 4.1   $ 4.1   $ 4.0                
Investment, Identifier [Axis]: SCM Insurance Services Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   11.16% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 11.16% [2] 11.16% [2] 11.16% [2] 11.16% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 61.1 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 61.1 [6],[7],[8]                
Investment, Identifier [Axis]: SE1 Generation, LLC, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Coupon 14.25% [1]   14.25% [1]   12.25% [2] 14.25% [1] 14.25% [1] 14.25% [1] 14.25% [1] 12.25% [2] 12.25% [2] 12.25% [2] 12.25% [2]
Total first lien senior secured loans $ 44.9 [4]   $ 44.9 [4]   $ 57.5 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 44.9 [4]   44.9 [4]   57.5 [7]                
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 15.2   15.2   15.2                
Less: funded commitments 0.0   0.0   (8.3)                
Total unfunded commitments 15.2   15.2   6.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 15.2   $ 15.2   $ 6.9                
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.64% [1]   10.64% [1]   9.48% [2] 10.64% [1] 10.64% [1] 10.64% [1] 10.64% [1] 9.48% [2] 9.48% [2] 9.48% [2] 9.48% [2]
Total first lien senior secured loans $ 6.2 [3]   $ 6.2 [3]   $ 10.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.0 [3]   $ 6.0 [3]   $ 9.8 [6],[7]                
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.64% [1]   10.64% [1]   9.48% [2] 10.64% [1] 10.64% [1] 10.64% [1] 10.64% [1] 9.48% [2] 9.48% [2] 9.48% [2] 9.48% [2]
Total first lien senior secured loans $ 10.0 [3],[4]   $ 10.0 [3],[4]   $ 6.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 9.7 [3],[4]   $ 9.7 [3],[4]   $ 6.1 [6],[7]                
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.64% [1]   10.64% [1]   9.48% [2] 10.64% [1] 10.64% [1] 10.64% [1] 10.64% [1] 9.48% [2] 9.48% [2] 9.48% [2] 9.48% [2]
Total first lien senior secured loans $ 0.4 [3],[4]   $ 0.4 [3],[4]   $ 0.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.4 [3],[4]   $ 0.4 [3],[4]   $ 0.4 [6],[7]                
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.48%         9.48% 9.48% 9.48% 9.48%
Total first lien senior secured loans [6],[7]         $ 8.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 8.1                
Investment, Identifier [Axis]: SG Acquisition, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   9.17% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 9.17% [2] 9.17% [2] 9.17% [2] 9.17% [2]
Total first lien senior secured loans $ 33.8 [3],[4]   $ 33.8 [3],[4]   $ 33.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 33.1 [3],[4]   33.1 [3],[4]   33.5 [6],[7]                
Investment, Identifier [Axis]: SHO Holding I Corporation, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [7],[10]         124.9                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[10]         82.4                
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc.                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     18.0                    
Redemptions (cost)     8.0                    
Sales (cost)     0.0                    
Interest income     0.2                    
Capital structuring service fees     0.0                    
Dividend income     0.0                    
Other income     0.0                    
Net realized gains (losses):     0.0                    
Net unrealized gains (losses):     (2.6)                    
Fair Value 78.4   78.4                    
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 0.0   0.0                    
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [3],[4],[5] 18.2   18.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 16.0   16.0                    
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [4],[9] 124.9   124.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[9] 62.4   62.4                    
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc., Series A preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 0.0   0.0                    
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc., Warrant to purchase shares of common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 0.0   0.0                    
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         3.8                
Less: funded commitments         0.0                
Total unfunded commitments         3.8                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         3.8                
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, Inc., Series A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         0.1                
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, Inc., Series B units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         9.3                
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.8   3.8                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 3.8   3.8                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 3.8   3.8                    
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, LLC, Series A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 10.5   10.5                    
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, LLC, Series B units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 0.0   0.0                    
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, LLC, Series D units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 0.7   0.7                    
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, Class A-2 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.8 [4]   4.8 [4]   4.8 [7]                
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [3],[4] 89.6   89.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 86.0   86.0                    
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [6],[7]         61.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 56.2                
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.19%         12.19% 12.19% 12.19% 12.19%
Total first lien senior secured loans [6],[7]         $ 22.7                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         20.9                
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, Warrant to purchase Class A-2 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         4.7                
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, Warrant to purchase units of common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 3.6   3.6                    
Investment, Identifier [Axis]: SSE Buyer, Inc., Supply Source Enterprises, Inc., Impact Products LLC, The Safety Zone, LLC and SSE Parent, LP, Limited partnership class A-1 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0 [7]                
Investment, Identifier [Axis]: SSE Buyer, Inc., Supply Source Enterprises, Inc., Impact Products LLC, The Safety Zone, LLC and SSE Parent, LP, Limited partnership class A-2 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0 [7]                
Investment, Identifier [Axis]: SSE Buyer, Inc., Supply Source Enterprises, Inc., Impact Products LLC, The Safety Zone, LLC and SSE Parent, LP, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 23.4 [4],[9]   23.4 [4],[9]   21.0 [7],[10]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 8.2 [4],[9]   8.2 [4],[9]   14.3 [7],[10]                
Investment, Identifier [Axis]: SV-Burton Holdings, LLC and LBC Breeze Holdings LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         3.3                
Less: funded commitments         0.0                
Total unfunded commitments         3.3                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         3.3                
Investment, Identifier [Axis]: SV-Burton Holdings, LLC and LBC Breeze Holdings LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         $ 4.8                
Investment, Identifier [Axis]: SV-Burton Holdings, LLC and LBC Breeze Holdings LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.93%         9.93% 9.93% 9.93% 9.93%
Total first lien senior secured loans [6],[7]         $ 1.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         1.3                
Investment, Identifier [Axis]: SVP-Singer Holdings Inc. and SVP-Singer Holdings LP, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   $ 4.0 [7]                
Investment, Identifier [Axis]: SVP-Singer Holdings Inc. and SVP-Singer Holdings LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.48%         11.48% 11.48% 11.48% 11.48%
Total first lien senior secured loans 44.2 [4],[9]   44.2 [4],[9]   $ 44.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 33.2 [4],[9]   $ 33.2 [4],[9]   $ 36.4 [6],[7]                
Investment, Identifier [Axis]: Safe Home Security, Inc., Security Systems Inc., Safe Home Monitoring, Inc., National Protective Services, Inc., Bright Integrations LLC and Medguard Alert, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.47% [1]   12.47% [1]   11.63% [2] 12.47% [1] 12.47% [1] 12.47% [1] 12.47% [1] 11.63% [2] 11.63% [2] 11.63% [2] 11.63% [2]
Total first lien senior secured loans $ 47.6 [3],[4]   $ 47.6 [3],[4]   $ 47.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 47.6 [3],[4]   47.6 [3],[4]   47.9 [6],[7]                
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         10.5                
Less: funded commitments         (5.9)                
Total unfunded commitments         4.6                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 4.6                
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.13%         10.13% 10.13% 10.13% 10.13%
Total first lien senior secured loans [6],[7]         $ 14.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 13.9                
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.14%         10.14% 10.14% 10.14% 10.14%
Total first lien senior secured loans [6],[7]         $ 5.9                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         5.9                
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC, Series A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         16.0                
Investment, Identifier [Axis]: SageSure Holdings, LLC and SageSure LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.1   3.1                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 3.1   3.1                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.1   $ 3.1                    
Investment, Identifier [Axis]: SageSure Holdings, LLC and SageSure LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.97%   10.97%     10.97% 10.97% 10.97% 10.97%        
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.7   0.7                    
Investment, Identifier [Axis]: SageSure Holdings, LLC and SageSure LLC, Series A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 22.6   22.6                    
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC, Tender Lawn Care ULC and Landscape Parallel Partners, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.3   3.3   4.6                
Less: funded commitments (0.6)   (0.6)   (0.2)                
Total unfunded commitments 2.7   2.7   4.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 2.7   2.7   4.4                
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC, Tender Lawn Care ULC and Landscape Parallel Partners, L.P., Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 15.8 [4]   $ 15.8 [4]   $ 14.7 [7]                
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC, Tender Lawn Care ULC and Landscape Parallel Partners, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.95% [1]   10.95% [1]   10.14% [2] 10.95% [1] 10.95% [1] 10.95% [1] 10.95% [1] 10.14% [2] 10.14% [2] 10.14% [2] 10.14% [2]
Total first lien senior secured loans $ 1.9 [3],[4]   $ 1.9 [3],[4]   $ 0.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.9 [3],[4]   $ 1.9 [3],[4]   $ 0.6 [6],[7]                
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC, Tender Lawn Care ULC and Landscape Parallel Partners, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.95% [1]   10.95% [1]   10.14% [2] 10.95% [1] 10.95% [1] 10.95% [1] 10.95% [1] 10.14% [2] 10.14% [2] 10.14% [2] 10.14% [2]
Total first lien senior secured loans $ 0.6 [3],[4]   $ 0.6 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.6 [3],[4]   $ 0.6 [3],[4]   $ 0.2 [6],[7]                
Investment, Identifier [Axis]: SelectQuote, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon 13.20% [1]   13.20% [1]   12.42% [2] 13.20% [1] 13.20% [1] 13.20% [1] 13.20% [1] 12.42% [2] 12.42% [2] 12.42% [2] 12.42% [2]
Total first lien senior secured loans $ 22.3 [3],[4]   $ 22.3 [3],[4]   $ 22.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 19.6 [3],[4]   19.6 [3],[4]   19.5 [6],[7]                
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     98.8   317.8                
Redemptions (cost)     84.0   31.1                
Sales (cost)     0.0   0.0                
Interest income     85.8   146.3                
Capital structuring service fees     5.0   16.9                
Dividend income     0.0   0.0                
Other income     1.8   5.5                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     (26.1)   (25.3)                
Fair Value 1,237.1   1,237.1   1,248.6                
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC, Membership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [5]   $ 0.0 [5]   $ 0.0 [8]                
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC, Subordinated certificates                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.27% [1]   13.27% [1]   12.77% [2] 13.27% [1] 13.27% [1] 13.27% [1] 13.27% [1] 12.77% [2] 12.77% [2] 12.77% [2] 12.77% [2]
Total first lien senior secured loans [8],[21]         $ 1,274.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1,237.1 [5],[22]   $ 1,237.1 [5],[22]   $ 1,248.6 [8],[21]                
Investment, Identifier [Axis]: Service Logic Acquisition, Inc. and MSHC, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.55% [1]   10.55% [1]   9.59% 10.55% [1] 10.55% [1] 10.55% [1] 10.55% [1] 9.59% 9.59% 9.59% 9.59%
Total first lien senior secured loans $ 3.4 [3],[4]   $ 3.4 [3],[4]   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.4 [3],[4]   3.4 [3],[4]   0.1                
Investment, Identifier [Axis]: Shermco Intermediate Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.0   4.0   4.0                
Less: funded commitments (0.6)   (0.6)   (2.7)                
Total unfunded commitments 3.4   3.4   1.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.4   $ 3.4   $ 1.3                
Investment, Identifier [Axis]: Shermco Intermediate Holdings, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.60% [1]   9.60% [1]   10.82% [2] 9.60% [1] 9.60% [1] 9.60% [1] 9.60% [1] 10.82% [2] 10.82% [2] 10.82% [2] 10.82% [2]
Total first lien senior secured loans $ 0.6 [4]   $ 0.6 [4]   $ 2.7 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.6 [4]   0.6 [4]   2.7 [7]                
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     2.6   3.2                
Redemptions (cost)     0.4   4.5                
Sales (cost)     0.0   18.9                
Interest income     0.2   0.8                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.1                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     (3.8)   3.0                
Fair Value 4.5   4.5   6.0                
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.5   2.5   2.5                
Less: funded commitments (2.4)   (2.4)   0.0                
Total unfunded commitments 0.1   0.1   2.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.1   0.1   2.5                
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, Class A preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   1.8 [7]                
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, Class C preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [4]   $ 0.0 [4]   $ 1.8 [7]                
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.74% [1]   10.74% [1]   9.84% [2] 10.74% [1] 10.74% [1] 10.74% [1] 10.74% [1] 9.84% [2] 9.84% [2] 9.84% [2] 9.84% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.50%   12.50%     12.50% 12.50% 12.50% 12.50%        
Total first lien senior secured loans [3],[4] $ 2.3   $ 2.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 2.3   2.3                    
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, Preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.1 [4]   2.1 [4]   2.3 [7]                
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.0   5.0   5.0                
Less: funded commitments 0.0   0.0   (1.8)                
Total unfunded commitments 5.0   5.0   3.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 5.0   5.0   3.2                
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 16.5 [4]   $ 16.5 [4]   $ 13.9 [7]                
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.90% [1]   10.90% [1]   10.90% [2] 10.90% [1] 10.90% [1] 10.90% [1] 10.90% [1] 10.90% [2] 10.90% [2] 10.90% [2] 10.90% [2]
Total first lien senior secured loans $ 26.6 [3],[4]   $ 26.6 [3],[4]   $ 26.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 26.6 [3],[4]   $ 26.6 [3],[4]   $ 26.8 [6],[7]                
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.90% [1]   10.90% [1]   10.90% [2] 10.90% [1] 10.90% [1] 10.90% [1] 10.90% [1] 10.90% [2] 10.90% [2] 10.90% [2] 10.90% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.39%   11.39%     11.39% 11.39% 11.39% 11.39%        
Total first lien senior secured loans [3],[4] $ 6.2   $ 6.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 6.2   6.2                    
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.59%         10.59% 10.59% 10.59% 10.59%
Total first lien senior secured loans [6],[7]         $ 1.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         1.8                
Investment, Identifier [Axis]: Silk Holdings III Corp. and Silk Holdings I Corp.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.1   0.1                    
Less: funded commitments (0.1)   (0.1)                    
Total unfunded commitments 0.0   0.0                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 0.0   0.0                    
Investment, Identifier [Axis]: Silk Holdings III Corp. and Silk Holdings I Corp., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 14.2   $ 14.2                    
Investment, Identifier [Axis]: Silk Holdings III Corp. and Silk Holdings I Corp., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.77%   12.77%     12.77% 12.77% 12.77% 12.77%        
Total first lien senior secured loans [3],[4] $ 16.8   $ 16.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 16.3   $ 16.3                    
Investment, Identifier [Axis]: Silk Holdings III Corp. and Silk Holdings I Corp., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.02%   11.02%     11.02% 11.02% 11.02% 11.02%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.1   0.1                    
Investment, Identifier [Axis]: SilverBow Resources, Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 29.6 [4],[5],[11]   29.6 [4],[5],[11]   28.7 [7]                
Investment, Identifier [Axis]: SiroMed Physician Services, Inc. and SiroMed Equity Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.1   7.1   7.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 7.1   7.1   7.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 7.1   7.1   7.1                
Investment, Identifier [Axis]: SiroMed Physician Services, Inc. and SiroMed Equity Holdings, LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.2 [4]   $ 1.2 [4]   $ 1.2 [7]                
Investment, Identifier [Axis]: SiroMed Physician Services, Inc. and SiroMed Equity Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.95% [1]   9.95% [1]   9.48% [2] 9.95% [1] 9.95% [1] 9.95% [1] 9.95% [1] 9.48% [2] 9.48% [2] 9.48% [2] 9.48% [2]
Total first lien senior secured loans $ 9.2 [3],[4]   $ 9.2 [3],[4]   $ 10.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 9.2 [3],[4]   9.2 [3],[4]   10.3 [6],[7]                
Investment, Identifier [Axis]: Smarsh Inc. and Skywalker TopCo, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.0   2.0   2.0                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.0   2.0   2.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 2.0   2.0   2.0                
Investment, Identifier [Axis]: Smarsh Inc. and Skywalker TopCo, LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 9.2 [4]   $ 9.2 [4]   $ 8.6 [7]                
Investment, Identifier [Axis]: Smarsh Inc. and Skywalker TopCo, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.84% [1]   11.84% [1]   11.29% [2] 11.84% [1] 11.84% [1] 11.84% [1] 11.84% [1] 11.29% [2] 11.29% [2] 11.29% [2] 11.29% [2]
Total first lien senior secured loans $ 11.9 [3],[4]   $ 11.9 [3],[4]   $ 11.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 11.9 [3],[4]   11.9 [3],[4]   11.9 [6],[7]                
Investment, Identifier [Axis]: SocialFlow, Inc., Warrant to purchase shares of Series C preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0   $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Sophia, L.P., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.20% [1]   13.20% [1]   12.73% [2] 13.20% [1] 13.20% [1] 13.20% [1] 13.20% [1] 12.73% [2] 12.73% [2] 12.73% [2] 12.73% [2]
Total first lien senior secured loans $ 105.9 [3],[4]   $ 105.9 [3],[4]   $ 105.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 102.7 [3],[4]   102.7 [3],[4]   103.8 [6],[7]                
Investment, Identifier [Axis]: SoundCloud Limited, Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.7 [4],[5]   0.7 [4],[5]   0.7 [7],[8]                
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.7   1.7   1.7                
Less: funded commitments (0.3)   (0.3)   0.0                
Total unfunded commitments 1.4   1.4   1.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.4   $ 1.4   $ 1.7                
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.84% [1]   11.84% [1]   11.18% [2] 11.84% [1] 11.84% [1] 11.84% [1] 11.84% [1] 11.18% [2] 11.18% [2] 11.18% [2] 11.18% [2]
Total first lien senior secured loans $ 2.6 [3],[4]   $ 2.6 [3],[4]   $ 2.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.6 [3],[4]   $ 2.6 [3],[4]   2.5 [6],[7]                
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.70%   11.70%     11.70% 11.70% 11.70% 11.70%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.3   0.3                    
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp, Limited partner interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 10.7 [4]   $ 10.7 [4]   $ 10.5 [7]                
Investment, Identifier [Axis]: Spring Insurance Solutions, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.89% [1]   11.89% [1]   11.23% [2] 11.89% [1] 11.89% [1] 11.89% [1] 11.89% [1] 11.23% [2] 11.23% [2] 11.23% [2] 11.23% [2]
Total first lien senior secured loans $ 21.9 [3],[4]   $ 21.9 [3],[4]   $ 22.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 19.3 [3],[4]   19.3 [3],[4]   $ 19.6 [6],[7]                
Investment, Identifier [Axis]: Stamps.com Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.13%         10.13% 10.13% 10.13% 10.13%
Total first lien senior secured loans [6],[7]         $ 146.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         140.9                
Investment, Identifier [Axis]: Star US Bidco LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 8.5   8.5   8.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 8.5   8.5   8.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 8.5   8.5   8.5                
Investment, Identifier [Axis]: Startec Equity, LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   0.0                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.0   0.0                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     0.0   0.0                
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: Startec Equity, LLC, Member interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0   0.0   $ 0.0                
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.4   12.4                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 12.4   12.4                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 12.4   $ 12.4                    
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.79% [1]   11.79% [1]   10.54% [2] 11.79% [1] 11.79% [1] 11.79% [1] 11.79% [1] 10.54% [2] 10.54% [2] 10.54% [2] 10.54% [2]
Total first lien senior secured loans $ 46.3 [3],[4],[5]   $ 46.3 [3],[4],[5]   $ 51.3 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 46.3 [3],[4],[5]   $ 46.3 [3],[4],[5]   $ 50.3 [6],[7],[8]                
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.16% [1]   12.16% [1]   11.08% [2] 12.16% [1] 12.16% [1] 12.16% [1] 12.16% [1] 11.08% [2] 11.08% [2] 11.08% [2] 11.08% [2]
Total first lien senior secured loans $ 3.3 [3],[4],[5]   $ 3.3 [3],[4],[5]   $ 5.2 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.3 [3],[4],[5]   $ 3.3 [3],[4],[5]   $ 5.1 [6],[7],[8]                
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.00% [1]   14.00% [1]   13.75% [2] 14.00% [1] 14.00% [1] 14.00% [1] 14.00% [1] 13.75% [2] 13.75% [2] 13.75% [2] 13.75% [2]
Total first lien senior secured loans $ 0.8 [3],[4],[5]   $ 0.8 [3],[4],[5]   $ 2.5 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.8 [3],[4],[5]   $ 0.8 [3],[4],[5]   2.4 [6],[7],[8]                
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.15%   12.15%     12.15% 12.15% 12.15% 12.15%        
Total first lien senior secured loans [3],[4],[5] $ 3.1   $ 3.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 3.1   $ 3.1                    
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.12%   12.12%     12.12% 12.12% 12.12% 12.12%        
Total first lien senior secured loans [3],[4],[5] $ 1.4   $ 1.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 1.4   $ 1.4                    
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 6                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.85%   11.85%     11.85% 11.85% 11.85% 11.85%        
Total first lien senior secured loans [3],[4],[5] $ 3.4   $ 3.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 3.4   $ 3.4                    
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 7                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.15%   12.15%     12.15% 12.15% 12.15% 12.15%        
Total first lien senior secured loans [3],[4],[5] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 0.4   0.4                    
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 8.5 [4],[5]   $ 8.5 [4],[5]   $ 7.0 [7],[8]                
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Second lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.09% [1]   12.09% [1]   11.54% [2] 12.09% [1] 12.09% [1] 12.09% [1] 12.09% [1] 11.54% [2] 11.54% [2] 11.54% [2] 11.54% [2]
Total first lien senior secured loans $ 42.8 [3],[4]   $ 42.8 [3],[4]   $ 42.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 41.5 [3],[4]   $ 41.5 [3],[4]   $ 41.1 [6],[7]                
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Second lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.09% [1]   12.09% [1]   11.54% [2] 12.09% [1] 12.09% [1] 12.09% [1] 12.09% [1] 11.54% [2] 11.54% [2] 11.54% [2] 11.54% [2]
Total first lien senior secured loans $ 10.3 [3],[4]   $ 10.3 [3],[4]   $ 10.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 10.0 [3],[4]   10.0 [3],[4]   9.9 [6],[7]                
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class A redeemable shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7 [4],[5]   2.7 [4],[5]   2.2 [7],[8]                
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class B redeemable shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7 [4],[5]   2.7 [4],[5]   2.2 [7],[8]                
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class C redeemable shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7 [4],[5]   2.7 [4],[5]   2.2 [7],[8]                
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class D redeemable shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7 [4],[5]   2.7 [4],[5]   2.2 [7],[8]                
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class E redeemable shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7 [4],[5]   2.7 [4],[5]   2.2 [7],[8]                
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class F redeemable shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7 [4],[5]   2.7 [4],[5]   2.2 [7],[8]                
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class G redeemable shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7 [4],[5]   2.7 [4],[5]   2.2 [7],[8]                
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class H redeemable shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7 [4],[5]   2.7 [4],[5]   2.2 [7],[8]                
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class I redeemable shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.7 [4],[5]   $ 2.7 [4],[5]   $ 2.2 [7],[8]                
Investment, Identifier [Axis]: Storm Investment S.a.r.l., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 3.75% [1]   3.75% [1]   375.00% [2] 3.75% [1] 3.75% [1] 3.75% [1] 3.75% [1] 375.00% [2] 375.00% [2] 375.00% [2] 375.00% [2]
Total first lien senior secured loans $ 67.3 [4],[5]   $ 67.3 [4],[5]   $ 66.0 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 67.3 [4],[5]   67.3 [4],[5]   66.0 [7],[8]                
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Ordinary shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [4],[5]   0.2 [4],[5]   0.2 [7],[8]                
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 21.3   21.3   21.6                
Less: funded commitments (0.9)   (0.9)   (0.4)                
Total unfunded commitments 20.4   20.4   21.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 20.4   20.4   21.2                
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 8.3 [4]   $ 8.3 [4]   $ 9.3 [7]                
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.97% [1]   10.97% [1]   10.13% [2] 10.97% [1] 10.97% [1] 10.97% [1] 10.97% [1] 10.13% [2] 10.13% [2] 10.13% [2] 10.13% [2]
Total first lien senior secured loans $ 52.0 [3],[4]   $ 52.0 [3],[4]   $ 52.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 50.4 [3],[4]   $ 50.4 [3],[4]   $ 50.4 [6],[7]                
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.97% [1]   10.97% [1]   10.13% [2] 10.97% [1] 10.97% [1] 10.97% [1] 10.97% [1] 10.13% [2] 10.13% [2] 10.13% [2] 10.13% [2]
Total first lien senior secured loans $ 5.3 [3],[4]   $ 5.3 [3],[4]   $ 5.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.2 [3],[4]   $ 5.2 [3],[4]   5.2 [6],[7]                
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.00%   13.00%     13.00% 13.00% 13.00% 13.00%        
Total first lien senior secured loans $ 0.5 [3],[4],[13]   $ 0.5 [3],[4],[13]   0.0 [15]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.5 [3],[4],[13]   0.5 [3],[4],[13]   0.0 [15]                
Investment, Identifier [Axis]: Sundance Energy Inc.                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)         0.0                
Redemptions (cost)         41.0                
Sales (cost)         0.0                
Interest income         0.0                
Capital structuring service fees         0.0                
Dividend income         0.0                
Other income         0.0                
Net realized gains (losses):         (22.6)                
Net unrealized gains (losses):         1.2                
Fair Value         0.0                
Investment, Identifier [Axis]: Sundance Group Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.0   3.0   3.0                
Less: funded commitments (0.7)   (0.7)   0.0                
Total unfunded commitments 2.3   2.3   3.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.3   $ 2.3   $ 3.0                
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.42% [1]   11.42% [1]   10.75% [2] 11.42% [1] 11.42% [1] 11.42% [1] 11.42% [1] 10.75% [2] 10.75% [2] 10.75% [2] 10.75% [2]
Total first lien senior secured loans $ 20.1 [3],[4]   $ 20.1 [3],[4]   $ 20.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 20.1 [3],[4]   $ 20.1 [3],[4]   $ 19.9 [6],[7]                
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.61% [1]   11.61% [1]   10.93% [2] 11.61% [1] 11.61% [1] 11.61% [1] 11.61% [1] 10.93% [2] 10.93% [2] 10.93% [2] 10.93% [2]
Total first lien senior secured loans $ 0.8 [3],[4]   $ 0.8 [3],[4]   $ 0.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.8 [3],[4]   $ 0.8 [3],[4]   0.8 [6],[7]                
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.49%   11.49%     11.49% 11.49% 11.49% 11.49%        
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.7   0.7                    
Investment, Identifier [Axis]: Sunk Rock Foundry Partners LP, Hatteras Electrical Manufacturing Holding Company and Sigma Electric Manufacturing Corporation, Diecast Beacon                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 6.0   6.0   6.0                
Less: funded commitments (0.3)   (0.3)   (0.6)                
Total unfunded commitments 5.7   5.7   5.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 5.7   5.7   5.4                
Investment, Identifier [Axis]: Sunk Rock Foundry Partners LP, Hatteras Electrical Manufacturing Holding Company and Sigma Electric Manufacturing Corporation, Diecast Beacon, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [15]         0.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [4],[16]   $ 0.0 [4],[16]   $ 0.0 [15]                
Investment, Identifier [Axis]: Sunrun Atlas Depositor 2019-2, LLC and Sunrun Atlas Holdings 2019-2, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 3.61% [1]   3.61% [1]   3.61% [2] 3.61% [1] 3.61% [1] 3.61% [1] 3.61% [1] 3.61% [2] 3.61% [2] 3.61% [2] 3.61% [2]
Total first lien senior secured loans $ 0.1 [4]   $ 0.1 [4]   $ 0.1 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [4]   $ 0.1 [4]   $ 0.1 [7]                
Investment, Identifier [Axis]: Sunrun Atlas Depositor 2019-2, LLC and Sunrun Atlas Holdings 2019-2, LLC, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Coupon 12.05% [1]   12.05% [1]   11.16% [2] 12.05% [1] 12.05% [1] 12.05% [1] 12.05% [1] 11.16% [2] 11.16% [2] 11.16% [2] 11.16% [2]
Total first lien senior secured loans $ 153.1 [3],[4]   $ 153.1 [3],[4]   $ 147.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 140.9 [3],[4]   140.9 [3],[4]   136.1 [6],[7]                
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 75.0   75.0   75.0                
Less: funded commitments (75.0)   (75.0)   (40.7)                
Total unfunded commitments 0.0   0.0   34.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.0   $ 0.0   $ 34.3                
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC, Senior subordinated revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.44% [1]   8.44% [1]   7.86% [2] 8.44% [1] 8.44% [1] 8.44% [1] 8.44% [1] 7.86% [2] 7.86% [2] 7.86% [2] 7.86% [2]
Total first lien senior secured loans $ 45.0 [4],[5]   $ 45.0 [4],[5]   $ 24.4 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 44.1 [4],[5]   $ 44.1 [4],[5]   $ 24.2 [7],[8]                
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC, Senior subordinated revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.81% [1]   12.81% [1]   8.95% [2] 12.81% [1] 12.81% [1] 12.81% [1] 12.81% [1] 8.95% [2] 8.95% [2] 8.95% [2] 8.95% [2]
Total first lien senior secured loans $ 30.0   $ 30.0   $ 16.3 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 29.4   $ 29.4   $ 16.1 [7],[8]                
Investment, Identifier [Axis]: Sunrun Xanadu Issuer 2019-1, LLC and Sunrun Xanadu Holdings 2019-1, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 3.98% [1]   3.98% [1]   3.98% [2] 3.98% [1] 3.98% [1] 3.98% [1] 3.98% [1] 3.98% [2] 3.98% [2] 3.98% [2] 3.98% [2]
Total first lien senior secured loans $ 0.3 [4]   $ 0.3 [4]   $ 0.3 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.3 [4]   $ 0.3 [4]   $ 0.3 [7]                
Investment, Identifier [Axis]: Sunrun Xanadu Issuer 2019-1, LLC and Sunrun Xanadu Holdings 2019-1, LLC, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Coupon 10.00% [1]   10.00% [1]   10.00% [2] 10.00% [1] 10.00% [1] 10.00% [1] 10.00% [1] 10.00% [2] 10.00% [2] 10.00% [2] 10.00% [2]
Total first lien senior secured loans $ 74.3 [3],[4]   $ 74.3 [3],[4]   $ 72.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 69.1 [3],[4]   69.1 [3],[4]   67.3 [6],[7]                
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.0   7.0   7.0                
Less: funded commitments 0.0   0.0   (3.1)                
Total unfunded commitments 7.0   7.0   3.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 7.0   $ 7.0   $ 3.9                
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.65% [1]   9.65% [1]   8.69% [2] 9.65% [1] 9.65% [1] 9.65% [1] 9.65% [1] 8.69% [2] 8.69% [2] 8.69% [2] 8.69% [2]
Total first lien senior secured loans $ 12.3 [3],[4],[11]   $ 12.3 [3],[4],[11]   $ 12.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 11.0 [3],[4],[11]   $ 11.0 [3],[4],[11]   $ 10.5 [6],[7]                
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.25%         10.25% 10.25% 10.25% 10.25%
Total first lien senior secured loans [7]         $ 3.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 2.6                
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.02% [1]   13.02% [1]   12.07% [2] 13.02% [1] 13.02% [1] 13.02% [1] 13.02% [1] 12.07% [2] 12.07% [2] 12.07% [2] 12.07% [2]
Total first lien senior secured loans $ 76.2 [3],[4]   $ 76.2 [3],[4]   $ 76.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 69.4 [3],[4]   69.4 [3],[4]   64.8 [6],[7]                
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Series C-1 preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 82.2 [4]   82.2 [4]   73.1 [7]                
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Series C-2 preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 41.1 [4]   41.1 [4]   36.6 [7]                
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Series C-3 preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 16.0 [4]   16.0 [4]   14.3 [7]                
Investment, Identifier [Axis]: Synergy HomeCare Franchising, LLC and NP/Synergy Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.2   4.2   4.2                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 4.2   4.2   4.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 4.2   4.2   4.2                
Investment, Identifier [Axis]: Synergy HomeCare Franchising, LLC and NP/Synergy Holdings, LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.1   $ 1.1   $ 1.0                
Investment, Identifier [Axis]: Synergy HomeCare Franchising, LLC and NP/Synergy Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.48% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 13.1 [3],[4]   $ 13.1 [3],[4]   $ 13.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 13.1 [3],[4]   13.1 [3],[4]   13.1 [6],[7]                
Investment, Identifier [Axis]: Systems Planning and Analysis, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.0   4.0                    
Less: funded commitments (1.7)   (1.7)                    
Total unfunded commitments 2.3   2.3                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.3   $ 2.3                    
Investment, Identifier [Axis]: Systems Planning and Analysis, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.24%   11.24%     11.24% 11.24% 11.24% 11.24%        
Total first lien senior secured loans [3],[4] $ 1.0   $ 1.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.0   $ 1.0                    
Investment, Identifier [Axis]: Systems Planning and Analysis, Inc., First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.10%   11.10%     11.10% 11.10% 11.10% 11.10%        
Total first lien senior secured loans [3],[4] $ 1.1   $ 1.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.1   $ 1.1                    
Investment, Identifier [Axis]: Systems Planning and Analysis, Inc., First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.93%   10.93%     10.93% 10.93% 10.93% 10.93%        
Total first lien senior secured loans [3],[4] $ 0.6   $ 0.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.6   0.6                    
Investment, Identifier [Axis]: TA/WEG Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.0   2.0   2.0                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.0   2.0   2.0                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.0   $ 2.0   $ 2.0                
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.00% [1]   11.00% [1]   9.98% [2] 11.00% [1] 11.00% [1] 11.00% [1] 11.00% [1] 9.98% [2] 9.98% [2] 9.98% [2] 9.98% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [7]                
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.63% [1]   11.63% [1]   9.41% [2] 11.63% [1] 11.63% [1] 11.63% [1] 11.63% [1] 9.41% [2] 9.41% [2] 9.41% [2] 9.41% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [7]                
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.25% [1]   11.25% [1]   10.75% [2] 11.25% [1] 11.25% [1] 11.25% [1] 11.25% [1] 10.75% [2] 10.75% [2] 10.75% [2] 10.75% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   $ 0.1 [7]                
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.46%         10.46% 10.46% 10.46% 10.46%
Total first lien senior secured loans [7]         $ 0.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         0.1                
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.2   0.2   0.3                
Less: funded commitments 0.0   0.0   (0.1)                
Total unfunded commitments 0.2   0.2   0.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.2   $ 0.2   $ 0.2                
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.64% [1]   10.64% [1]   9.98% [2] 10.64% [1] 10.64% [1] 10.64% [1] 10.64% [1] 9.98% [2] 9.98% [2] 9.98% [2] 9.98% [2]
Total first lien senior secured loans $ 34.3 [3],[4]   $ 34.3 [3],[4]   $ 34.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 34.3 [3],[4]   $ 34.3 [3],[4]   $ 34.4 [6],[7]                
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.64% [1]   10.64% [1]   9.98% [2] 10.64% [1] 10.64% [1] 10.64% [1] 10.64% [1] 9.98% [2] 9.98% [2] 9.98% [2] 9.98% [2]
Total first lien senior secured loans $ 6.5 [3],[4]   $ 6.5 [3],[4]   $ 6.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.5 [3],[4]   $ 6.5 [3],[4]   $ 6.5 [6],[7]                
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.64%   10.64%     10.64% 10.64% 10.64% 10.64%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.1   0.1                    
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.57%         9.57% 9.57% 9.57% 9.57%
Total first lien senior secured loans [6],[7]         $ 0.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.1                
Investment, Identifier [Axis]: THG Acquisition, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 14.8   14.8   18.2                
Less: funded commitments (1.3)   (1.3)   0.0                
Total unfunded commitments 13.5   13.5   18.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 13.5   $ 13.5   $ 18.2                
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.95% [1]   10.95% [1]   9.88% [2] 10.95% [1] 10.95% [1] 10.95% [1] 10.95% [1] 9.88% [2] 9.88% [2] 9.88% [2] 9.88% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 17.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1   $ 0.1   $ 16.7 [6],[7]                
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.95% [1]   10.95% [1]   10.13% [2] 10.95% [1] 10.95% [1] 10.95% [1] 10.95% [1] 10.13% [2] 10.13% [2] 10.13% [2] 10.13% [2]
Total first lien senior secured loans $ 14.8 [3],[4]   $ 14.8 [3],[4]   $ 14.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 14.6 [3],[4]   $ 14.6 [3],[4]   $ 14.7 [6],[7]                
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   10.13% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 10.13% [2] 10.13% [2] 10.13% [2] 10.13% [2]
Total first lien senior secured loans $ 20.4 [3],[4]   $ 20.4 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 19.9 [3],[4]   $ 19.9 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.95%   10.95%     10.95% 10.95% 10.95% 10.95%        
Total first lien senior secured loans [3],[4] $ 1.3   $ 1.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 1.3   1.3                    
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 7.5   7.5   7.5                
Less: funded commitments (1.2)   (1.2)   (1.3)                
Total unfunded commitments 6.3   6.3   6.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 6.3   6.3   6.2                
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., Class A-2 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.4   $ 6.4   $ 5.9                
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.48%         9.48% 9.48% 9.48% 9.48%
Total first lien senior secured loans [6]         $ 35.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6]         $ 35.1                
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.64%   10.64%     10.64% 10.64% 10.64% 10.64%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.3   $ 0.3                    
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.64%   10.64%     10.64% 10.64% 10.64% 10.64%        
Total first lien senior secured loans [3],[4] $ 34.7   $ 34.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 34.7   $ 34.7                    
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.64% [1]   10.64% [1]   10.17% [2] 10.64% [1] 10.64% [1] 10.64% [1] 10.64% [1] 10.17% [2] 10.17% [2] 10.17% [2] 10.17% [2]
Total first lien senior secured loans $ 1.2 [3],[4]   $ 1.2 [3],[4]   $ 1.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.2 [3],[4]   1.2 [3],[4]   1.3 [6],[7]                
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.7   1.7   1.7                
Less: funded commitments (0.7)   (0.7)   (0.8)                
Total unfunded commitments 1.0   1.0   0.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 1.0   1.0   0.9                
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 7.2   $ 7.2   $ 4.6                
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         8.92%         8.92% 8.92% 8.92% 8.92%
Total first lien senior secured loans [6],[7]         $ 1.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 1.4                
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.92%   10.92%     10.92% 10.92% 10.92% 10.92%        
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.4   $ 0.4                    
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.96%   10.96%     10.96% 10.96% 10.96% 10.96%        
Total first lien senior secured loans [3],[4] $ 1.0   $ 1.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.0   $ 1.0                    
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.40% [1]   10.40% [1]   9.51% [2] 10.40% [1] 10.40% [1] 10.40% [1] 10.40% [1] 9.51% [2] 9.51% [2] 9.51% [2] 9.51% [2]
Total first lien senior secured loans $ 0.6 [3],[4]   $ 0.6 [3],[4]   $ 0.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.5 [3],[4]   $ 0.5 [3],[4]   $ 0.4 [6],[7]                
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.96% [1]   10.96% [1]   10.05% [2] 10.96% [1] 10.96% [1] 10.96% [1] 10.96% [1] 10.05% [2] 10.05% [2] 10.05% [2] 10.05% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.4 [6],[7]                
Investment, Identifier [Axis]: Teasdale Foods, Inc. and Familia Group Holdings Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon 12.84% [1]   12.84% [1]   12.29% [2] 12.84% [1] 12.84% [1] 12.84% [1] 12.84% [1] 12.29% [2] 12.29% [2] 12.29% [2] 12.29% [2]
Total first lien senior secured loans $ 76.1 [3],[4]   $ 76.1 [3],[4]   $ 75.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 68.5 [3],[4]   68.5 [3],[4]   65.3 [6],[7]                
Investment, Identifier [Axis]: Teasdale Foods, Inc. and Familia Group Holdings Inc., Warrant to purchase shares of common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [4]   $ 0.0 [4]   $ 0.0                
Investment, Identifier [Axis]: Tempus Labs, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.49%         10.49% 10.49% 10.49% 10.49%
Total first lien senior secured loans [6],[7]         $ 71.4                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         69.6                
Investment, Identifier [Axis]: Tempus Labs, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon [1] 13.14%   13.14%     13.14% 13.14% 13.14% 13.14%        
Total first lien senior secured loans [3],[4] $ 71.4   $ 71.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 71.4   $ 71.4                    
Investment, Identifier [Axis]: Tempus Labs, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon [1] 13.49%   13.49%     13.49% 13.49% 13.49% 13.49%        
Total first lien senior secured loans [3],[4] $ 20.9   $ 20.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 20.9   20.9                    
Investment, Identifier [Axis]: TerSera Therapeutics LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         0.1                
Less: funded commitments         0.0                
Total unfunded commitments         0.1                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 0.1                
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.98%         9.98% 9.98% 9.98% 9.98%
Total first lien senior secured loans [6],[7]         $ 5.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 5.0                
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.98%         9.98% 9.98% 9.98% 9.98%
Total first lien senior secured loans [6],[7]         $ 2.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 2.0                
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.98%         9.98% 9.98% 9.98% 9.98%
Total first lien senior secured loans [6],[7]         $ 1.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         1.8                
Investment, Identifier [Axis]: The Alaska Club Partners, LLC, Athletic Club Partners LLC and The Alaska Club, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.1   1.1   1.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 1.1   1.1   1.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1.1   $ 1.1   $ 1.1                
Investment, Identifier [Axis]: The Alaska Club Partners, LLC, Athletic Club Partners LLC and The Alaska Club, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon 11.98% [1]   11.98% [1]   14.00% [2] 11.98% [1] 11.98% [1] 11.98% [1] 11.98% [1] 14.00% [2] 14.00% [2] 14.00% [2] 14.00% [2]
Total first lien senior secured loans $ 12.4 [3],[4]   $ 12.4 [3],[4]   $ 12.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 12.4 [3],[4]   12.4 [3],[4]   12.5 [6],[7]                
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 13.6   13.6   12.6                
Less: funded commitments (12.8)   (12.8)   (11.5)                
Total unfunded commitments 0.8   0.8   1.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.8   0.8   1.1                
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 8.1   8.1   $ 8.5                
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, Class C units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.4   $ 0.4                    
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.81% [1]   11.81% [1]   9.57% [2] 11.81% [1] 11.81% [1] 11.81% [1] 11.81% [1] 9.57% [2] 9.57% [2] 9.57% [2] 9.57% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.2 [6],[7]                
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.80% [1]   11.80% [1]   11.08% [2] 11.80% [1] 11.80% [1] 11.80% [1] 11.80% [1] 11.08% [2] 11.08% [2] 11.08% [2] 11.08% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.2 [6],[7]                
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.15%   11.15%     11.15% 11.15% 11.15% 11.15%        
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.2   $ 0.2                    
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.26%   12.26%     12.26% 12.26% 12.26% 12.26%        
Total first lien senior secured loans [3],[4] $ 1.6   $ 1.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.6   $ 1.6                    
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.80% [1]   11.80% [1]   10.10% [2] 11.80% [1] 11.80% [1] 11.80% [1] 11.80% [1] 10.10% [2] 10.10% [2] 10.10% [2] 10.10% [2]
Total first lien senior secured loans $ 3.3 [3],[4]   $ 3.3 [3],[4]   $ 8.9 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.2 [3],[4]   $ 3.2 [3],[4]   $ 8.8 [6],[7]                
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   12.50% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 12.50% [2] 12.50% [2] 12.50% [2] 12.50% [2]
Total first lien senior secured loans $ 2.3 [3],[4]   $ 2.3 [3],[4]   $ 2.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.2 [3],[4]   $ 2.2 [3],[4]   $ 2.5 [6],[7]                
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.79%   11.79%     11.79% 11.79% 11.79% 11.79%        
Total first lien senior secured loans [3],[4] $ 1.3   $ 1.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.3   $ 1.3                    
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.36%   11.36%     11.36% 11.36% 11.36% 11.36%        
Total first lien senior secured loans [3],[4] $ 3.0   $ 3.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 2.9   $ 2.9                    
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.50%   13.50%     13.50% 13.50% 13.50% 13.50%        
Total first lien senior secured loans [3],[4] $ 2.9   $ 2.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 2.8   $ 2.8                    
Investment, Identifier [Axis]: The Edelman Financial Center, LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.94% [1]   11.94% [1]   11.13% [2] 11.94% [1] 11.94% [1] 11.94% [1] 11.94% [1] 11.13% [2] 11.13% [2] 11.13% [2] 11.13% [2]
Total first lien senior secured loans $ 19.3 [4],[5],[11]   $ 19.3 [4],[5],[11]   $ 13.4 [7],[8],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 18.6 [4],[5],[11]   18.6 [4],[5],[11]   12.0 [7],[8],[12]                
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 1.5   1.5   1.7                
Less: funded commitments (0.1)   (0.1)   (0.1)                
Total unfunded commitments 1.4   1.4   1.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 1.4   1.4   1.6                
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [4],[5]   $ 0.0 [4],[5]   $ 0.0 [8]                
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.51%         10.51% 10.51% 10.51% 10.51%
Total first lien senior secured loans [7],[8]         $ 3.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[8]         $ 3.4                
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.34%   11.34%     11.34% 11.34% 11.34% 11.34%        
Total first lien senior secured loans [3],[4],[5] $ 2.8   $ 2.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 2.7   $ 2.7                    
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.11%   11.11%     11.11% 11.11% 11.11% 11.11%        
Total first lien senior secured loans [3],[4],[5] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 0.3   $ 0.3                    
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.00%   11.00%     11.00% 11.00% 11.00% 11.00%        
Total first lien senior secured loans [3],[4],[5] $ 0.2   $ 0.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 0.2   $ 0.2                    
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.83%   10.83%     10.83% 10.83% 10.83% 10.83%        
Total first lien senior secured loans [3],[4],[5] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] $ 0.4   $ 0.4                    
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.00% [1]   13.00% [1]   12.00% [2] 13.00% [1] 13.00% [1] 13.00% [1] 13.00% [1] 12.00% [2] 12.00% [2] 12.00% [2] 12.00% [2]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.1 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4],[5]   0.1 [3],[4],[5]   0.1 [7],[8]                
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 3.2 [4],[5]   3.2 [4],[5]   3.0 [7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.0 [4],[5]   3.0 [4],[5]   2.9 [7],[8]                
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, Series A preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 3.9 [4],[5]   3.9 [4],[5]   4.8 [7],[8]                
Investment, Identifier [Axis]: The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 14.4   14.4   14.4                
Less: funded commitments (1.2)   (1.2)   (1.8)                
Total unfunded commitments 13.2   13.2   12.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 13.2   13.2   12.6                
Investment, Identifier [Axis]: The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P., Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 16.9 [4]   $ 16.9 [4]   $ 15.7 [7]                
Investment, Identifier [Axis]: The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon 11.39% [1]   11.39% [1]   10.43% [2] 11.39% [1] 11.39% [1] 11.39% [1] 11.39% [1] 10.43% [2] 10.43% [2] 10.43% [2] 10.43% [2]
Total first lien senior secured loans $ 215.5 [3],[4]   $ 215.5 [3],[4]   $ 213.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 213.4 [3],[4]   $ 213.4 [3],[4]   $ 209.3 [6],[7]                
Investment, Identifier [Axis]: The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.92% [1]   10.92% [1]   10.07% [2] 10.92% [1] 10.92% [1] 10.92% [1] 10.92% [1] 10.07% [2] 10.07% [2] 10.07% [2] 10.07% [2]
Total first lien senior secured loans $ 1.2 [3],[4],[13]   $ 1.2 [3],[4],[13]   $ 1.7 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.1 [3],[4],[13]   1.1 [3],[4],[13]   1.7 [6],[7],[14]                
Investment, Identifier [Axis]: The Teaching Company Holdings, Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4],[5]   0.0 [4],[5]   0.0                
Investment, Identifier [Axis]: The Teaching Company Holdings, Inc., Preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.3 [4],[5]   1.3 [4],[5]   2.5 [7]                
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 6.9   6.9   6.9                
Less: funded commitments (0.8)   (0.8)   0.0                
Total unfunded commitments 6.1   6.1   6.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 6.1   6.1   6.9                
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, Class A units 1                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.7   2.7   3.1                
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, Class A units 2                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, Class B units 1                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0   0.0   0.0                
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, Class B units 2                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0   $ 0.0   $ 0.0                
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.09% [1]   10.09% [1]   9.23% [2] 10.09% [1] 10.09% [1] 10.09% [1] 10.09% [1] 9.23% [2] 9.23% [2] 9.23% [2] 9.23% [2]
Total first lien senior secured loans $ 37.2 [3],[4]   $ 37.2 [3],[4]   $ 37.4 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 36.1 [3],[4]   $ 36.1 [3],[4]   $ 36.7 [7]                
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.13%   10.13%     10.13% 10.13% 10.13% 10.13%        
Total first lien senior secured loans [3],[4] $ 0.8   $ 0.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.8   $ 0.8                    
Investment, Identifier [Axis]: Therapy Brands Holdings LLC, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.90% [1]   11.90% [1]   11.10% [2] 11.90% [1] 11.90% [1] 11.90% [1] 11.90% [1] 11.10% [2] 11.10% [2] 11.10% [2] 11.10% [2]
Total first lien senior secured loans $ 29.1 [3],[4]   $ 29.1 [3],[4]   $ 29.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 27.3 [3],[4]   27.3 [3],[4]   27.9 [6],[7]                
Investment, Identifier [Axis]: Thermostat Purchaser III, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 11.7   11.7   11.7                
Less: funded commitments (0.3)   (0.3)   0.0                
Total unfunded commitments 11.4   11.4   11.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 11.4   $ 11.4   $ 11.7                
Investment, Identifier [Axis]: Thermostat Purchaser III, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.66% [1]   12.66% [1]   11.98% [2] 12.66% [1] 12.66% [1] 12.66% [1] 12.66% [1] 11.98% [2] 11.98% [2] 11.98% [2] 11.98% [2]
Total first lien senior secured loans $ 23.0 [3],[4],[16]   $ 23.0 [3],[4],[16]   $ 23.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 22.1 [3],[4],[16]   22.1 [3],[4],[16]   22.1 [6],[7]                
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         19.0                
Less: funded commitments         0.0                
Total unfunded commitments         19.0                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 19.0                
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.18%         9.18% 9.18% 9.18% 9.18%
Total first lien senior secured loans [6],[7],[12]         $ 10.9                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[12]         $ 9.7                
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., First lien senior secured notes                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         650.00%         650.00% 650.00% 650.00% 650.00%
Total first lien senior secured loans [7],[12]         $ 88.9                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[12]         74.9                
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 10.7                
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.00%         9.00% 9.00% 9.00% 9.00%
Total first lien senior secured loans [6],[7]         $ 85.3                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         69.9                
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Series A preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         143.1                
Investment, Identifier [Axis]: Top Five Largest Portfolio Company Investments | Senior Direct Lending Program                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 1,654.0   1,654.0   1,631.0                
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc.                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   0.0                
Redemptions (cost)     0.0   0.0                
Sales (cost)     0.0   0.0                
Interest income     0.1   0.3                
Capital structuring service fees     0.0   0.0                
Dividend income     0.0   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     0.2   (0.2)                
Fair Value 3.9   3.9   3.7                
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.4 [4]   $ 0.4 [4]   $ 0.2 [7]                
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.22% [1]   11.22% [1]   10.38% [2] 11.22% [1] 11.22% [1] 11.22% [1] 11.22% [1] 10.38% [2] 10.38% [2] 10.38% [2] 10.38% [2]
Total first lien senior secured loans $ 2.2 [3],[4]   $ 2.2 [3],[4]   $ 2.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.9 [3],[4]   $ 1.9 [3],[4]   $ 1.9 [6],[7]                
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 9.22% [1]   9.22% [1]   8.38% [2] 9.22% [1] 9.22% [1] 9.22% [1] 9.22% [1] 8.38% [2] 8.38% [2] 8.38% [2] 8.38% [2]
Total first lien senior secured loans $ 1.6 [3],[4]   $ 1.6 [3],[4]   $ 1.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 1.6 [3],[4]   1.6 [3],[4]   1.6 [6],[7]                
Investment, Identifier [Axis]: Touchstone Acquisition, Inc. and Touchstone Holding, L.P., Class A preferred units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.4 [4]   4.4 [4]   2.1 [7]                
Investment, Identifier [Axis]: Trader Corporation and Project Auto Finco Corp.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.6   0.6   3.6                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 0.6   0.6   3.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.6   $ 0.6   $ 3.6                
Investment, Identifier [Axis]: Trader Corporation and Project Auto Finco Corp., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.96% [1]   11.96% [1]   11.40% [2] 11.96% [1] 11.96% [1] 11.96% [1] 11.96% [1] 11.40% [2] 11.40% [2] 11.40% [2] 11.40% [2]
Total first lien senior secured loans $ 12.5 [3],[4],[5]   $ 12.5 [3],[4],[5]   $ 12.2 [6],[7],[8]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 12.5 [3],[4],[5]   $ 12.5 [3],[4],[5]   $ 11.9 [6],[7],[8]                
Investment, Identifier [Axis]: Triton Water Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.74% [1]   8.74% [1]   8.23% [2] 8.74% [1] 8.74% [1] 8.74% [1] 8.74% [1] 8.23% [2] 8.23% [2] 8.23% [2] 8.23% [2]
Total first lien senior secured loans $ 1.0 [3],[4],[11]   $ 1.0 [3],[4],[11]   $ 1.0 [6],[7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.9 [3],[4],[11]   $ 0.9 [3],[4],[11]   $ 0.9 [6],[7],[12]                
Investment, Identifier [Axis]: Triton Water Holdings, Inc., Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 6.25% [1]   6.25% [1]   625.00% [2] 6.25% [1] 6.25% [1] 6.25% [1] 6.25% [1] 625.00% [2] 625.00% [2] 625.00% [2] 625.00% [2]
Total first lien senior secured loans $ 0.1 [4],[11]   $ 0.1 [4],[11]   $ 0.1 [7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [4],[11]   0.1 [4],[11]   0.1 [7],[12]                
Investment, Identifier [Axis]: Triwizard Holdings, Inc. and Triwizard Parent, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 15.0   15.0                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 15.0   15.0                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 15.0   15.0                    
Investment, Identifier [Axis]: Triwizard Holdings, Inc. and Triwizard Parent, LP, Class A-2 common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 3.0   3.0                    
Investment, Identifier [Axis]: Two Six Labs, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 10.3   10.3   10.3                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 10.3   10.3   10.3                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 10.3   10.3   10.3                
Investment, Identifier [Axis]: U.S. Anesthesia Partners, Inc. & U.S. Anesthesia Partners Holdings, Inc., Common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 10.3 [4]   $ 10.3 [4]   $ 12.7 [7]                
Investment, Identifier [Axis]: U.S. Anesthesia Partners, Inc. & U.S. Anesthesia Partners Holdings, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.67% [1]   12.67% [1]   11.62% [2] 12.67% [1] 12.67% [1] 12.67% [1] 12.67% [1] 11.62% [2] 11.62% [2] 11.62% [2] 11.62% [2]
Total first lien senior secured loans $ 147.8 [3],[4]   $ 147.8 [3],[4]   $ 147.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 138.9 [3],[4]   138.9 [3],[4]   143.3 [6],[7]                
Investment, Identifier [Axis]: UKG Inc. and H&F Unite Partners, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 25.0   25.0   25.0                
Less: funded commitments (0.2)   (0.2)   (10.8)                
Total unfunded commitments 24.8   24.8   14.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 24.8   24.8   $ 14.2                
Investment, Identifier [Axis]: UKG Inc. and H&F Unite Partners, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         8.06%         8.06% 8.06% 8.06% 8.06%
Total first lien senior secured loans 0.0 [16]   0.0 [16]   $ 10.6 [7],[8],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [16]   0.0 [16]   10.6 [7],[8],[14]                
Investment, Identifier [Axis]: UKG Inc. and H&F Unite Partners, L.P., Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 17.8 [4],[5]   17.8 [4],[5]   14.4 [7],[8]                
Investment, Identifier [Axis]: US Salt Investors, LLC and Emerald Lake Pearl Acquisition-A, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 9.9   9.9   9.9                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 9.9   9.9   9.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 9.9   $ 9.9   $ 9.9                
Investment, Identifier [Axis]: US Salt Investors, LLC and Emerald Lake Pearl Acquisition-A, L.P., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.89% [1]   10.89% [1]   10.23% [2] 10.89% [1] 10.89% [1] 10.89% [1] 10.89% [1] 10.23% [2] 10.23% [2] 10.23% [2] 10.23% [2]
Total first lien senior secured loans $ 26.3 [3],[4]   $ 26.3 [3],[4]   $ 26.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 25.5 [3],[4]   25.5 [3],[4]   25.3 [6],[7]                
Investment, Identifier [Axis]: US Salt Investors, LLC and Emerald Lake Pearl Acquisition-A, L.P., Limited partner interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.6 [4]   0.6 [4]   0.5 [7]                
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         18.4                
Less: funded commitments         0.0                
Total unfunded commitments         18.4                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 18.4                
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC and Koln Co-Invest Unblocked, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.6   4.6                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 4.6   4.6                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 4.6   4.6                    
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC and Koln Co-Invest Unblocked, LP, Class A interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.5   $ 4.5                    
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC and Koln Co-Invest Unblocked, LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.99%   11.99%     11.99% 11.99% 11.99% 11.99%        
Total first lien senior secured loans [3],[4] $ 10.4   $ 10.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 10.1   $ 10.1                    
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.38%         9.38% 9.38% 9.38% 9.38%
Total first lien senior secured loans [6],[7]         $ 1.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         1.0                
Investment, Identifier [Axis]: UserZoom Technologies, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.42%   12.42%     12.42% 12.42% 12.42% 12.42%        
Total first lien senior secured loans [3],[4] $ 5.8   $ 5.8                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 5.7   5.7                    
Investment, Identifier [Axis]: VCP-EDC Co-Invest, LLC, Membership units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 7.1   7.1   4.2                
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.6   3.6   8.7                
Less: funded commitments (0.3)   (0.3)   0.0                
Total unfunded commitments 3.3   3.3   8.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.3   3.3   8.7                
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., Class A-2 units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 8.6                
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., Class A-2 units 1                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 10.0   10.0                    
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., Class A-2 units 2                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 0.1   $ 0.1                    
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.45% [1]   11.45% [1]   10.60% [2] 11.45% [1] 11.45% [1] 11.45% [1] 11.45% [1] 10.60% [2] 10.60% [2] 10.60% [2] 10.60% [2]
Total first lien senior secured loans $ 6.2 [3],[4]   $ 6.2 [3],[4]   $ 6.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.1 [3],[4]   $ 6.1 [3],[4]   $ 6.0 [6],[7]                
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.72% [1]   11.72% [1]   10.52% [2] 11.72% [1] 11.72% [1] 11.72% [1] 11.72% [1] 10.52% [2] 10.52% [2] 10.52% [2] 10.52% [2]
Total first lien senior secured loans $ 8.2 [3],[4]   $ 8.2 [3],[4]   $ 3.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 8.2 [3],[4]   $ 8.2 [3],[4]   3.1 [6],[7]                
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.50%   13.50%     13.50% 13.50% 13.50% 13.50%        
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.3   0.3                    
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC                          
Investments Activity And Fair Value Table [Abstract]                          
Purchases (cost)     0.0   6.0                
Redemptions (cost)     0.0   4.5                
Sales (cost)     0.0   0.0                
Interest income     3.1   5.0                
Capital structuring service fees     0.0   0.2                
Dividend income     6.7   0.0                
Other income     0.0   0.0                
Net realized gains (losses):     0.0   0.0                
Net unrealized gains (losses):     (12.3)   33.5                
Fair Value 104.1   104.1   116.1                
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 61.3 [4]   $ 61.3 [4]   $ 73.4 [7]                
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.67% [1]   14.67% [1]   13.62% [2] 14.67% [1] 14.67% [1] 14.67% [1] 14.67% [1] 13.62% [2] 13.62% [2] 13.62% [2] 13.62% [2]
Total first lien senior secured loans $ 27.3 [3],[4]   $ 27.3 [3],[4]   $ 27.3 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 27.3 [3],[4]   $ 27.3 [3],[4]   $ 27.3 [7]                
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.67% [1]   14.67% [1]   13.62% [2] 14.67% [1] 14.67% [1] 14.67% [1] 14.67% [1] 13.62% [2] 13.62% [2] 13.62% [2] 13.62% [2]
Total first lien senior secured loans $ 6.0 [3],[4]   $ 6.0 [3],[4]   $ 9.4 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 6.0 [3],[4]   $ 6.0 [3],[4]   $ 9.4 [7]                
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.67% [1]   14.67% [1]   13.62% [2] 14.67% [1] 14.67% [1] 14.67% [1] 14.67% [1] 13.62% [2] 13.62% [2] 13.62% [2] 13.62% [2]
Total first lien senior secured loans $ 9.5 [3],[4]   $ 9.5 [3],[4]   $ 6.0 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 9.5 [3],[4]   9.5 [3],[4]   6.0 [7]                
Investment, Identifier [Axis]: VRC Companies, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.4   5.4   5.4                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 5.4   5.4   5.4                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 5.4   $ 5.4   $ 5.4                
Investment, Identifier [Axis]: VRC Companies, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.97%         10.97% 10.97% 10.97% 10.97%
Total first lien senior secured loans [6],[7]         $ 0.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 0.0                
Investment, Identifier [Axis]: VRC Companies, LLC, Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Coupon 12.00% [1]   12.00% [1]   12.00% [2] 12.00% [1] 12.00% [1] 12.00% [1] 12.00% [1] 12.00% [2] 12.00% [2] 12.00% [2] 12.00% [2]
Total first lien senior secured loans $ 5.1 [4]   $ 5.1 [4]   $ 5.0 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 4.8 [4]   4.8 [4]   4.7 [7]                
Investment, Identifier [Axis]: VS Buyer, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 8.1   8.1   8.1                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 8.1   8.1   8.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 8.1   8.1   8.1                
Investment, Identifier [Axis]: VSC Investors LLC, Membership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4],[5],[11]   0.0 [4],[5],[11]   0.5 [7],[8],[12]                
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Class A Units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7]         $ 1.0                
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         7.88%         7.88% 7.88% 7.88% 7.88%
Total first lien senior secured loans [6],[7],[12]         $ 14.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[12]         $ 14.2                
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.63%         12.63% 12.63% 12.63% 12.63%
Total first lien senior secured loans [6],[7]         $ 122.7                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         $ 121.5                
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.63%         12.63% 12.63% 12.63% 12.63%
Total first lien senior secured loans [6],[7]         $ 21.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         20.9                
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc., Hercules Achievement, Inc. and BCPE Hercules Holdings, LP, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] $ 1.1   $ 1.1                    
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc., Hercules Achievement, Inc. and BCPE Hercules Holdings, LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.22%   10.22%     10.22% 10.22% 10.22% 10.22%        
Total first lien senior secured loans [3],[4],[11] $ 14.7   $ 14.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[11] $ 14.1   $ 14.1                    
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc., Hercules Achievement, Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon [1] 15.47%   15.47%     15.47% 15.47% 15.47% 15.47%        
Total first lien senior secured loans [3],[4] $ 144.9   $ 144.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 143.4   143.4                    
Investment, Identifier [Axis]: Verista, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 8.2   8.2   8.2                
Less: funded commitments (0.5)   (0.5)   (1.1)                
Total unfunded commitments 7.7   7.7   7.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 7.7   $ 7.7   $ 7.1                
Investment, Identifier [Axis]: Verista, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.38% [1]   11.38% [1]   10.19% [2] 11.38% [1] 11.38% [1] 11.38% [1] 11.38% [1] 10.19% [2] 10.19% [2] 10.19% [2] 10.19% [2]
Total first lien senior secured loans $ 0.8 [3],[4]   $ 0.8 [3],[4]   $ 0.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.8 [3],[4]   $ 0.8 [3],[4]   $ 0.8 [6],[7]                
Investment, Identifier [Axis]: Verista, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.19% [1]   11.19% [1]   10.27% [2] 11.19% [1] 11.19% [1] 11.19% [1] 11.19% [1] 10.27% [2] 10.27% [2] 10.27% [2] 10.27% [2]
Total first lien senior secured loans $ 0.5 [3],[4]   $ 0.5 [3],[4]   $ 1.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.5 [3],[4]   0.5 [3],[4]   1.1 [6],[7]                
Investment, Identifier [Axis]: Verscend Holding Corp.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 22.5   22.5   22.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 22.5   22.5   22.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 22.5   22.5   22.5                
Investment, Identifier [Axis]: Vertice Pharma UK Parent Limited, Preferred shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [5]   $ 0.0 [5]   $ 0.0 [8]                
Investment, Identifier [Axis]: Viant Medical Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 8.94% [1]   8.94% [1]   8.13% [2] 8.94% [1] 8.94% [1] 8.94% [1] 8.94% [1] 8.13% [2] 8.13% [2] 8.13% [2] 8.13% [2]
Total first lien senior secured loans $ 7.6 [4],[11]   $ 7.6 [4],[11]   $ 3.2 [7],[12]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 7.3 [4],[11]   $ 7.3 [4],[11]   $ 2.8 [7],[12]                
Investment, Identifier [Axis]: Visual Edge Technology, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon 12.48% [1]   12.48% [1]   11.74% [2] 12.48% [1] 12.48% [1] 12.48% [1] 12.48% [1] 11.74% [2] 11.74% [2] 11.74% [2] 11.74% [2]
Total first lien senior secured loans $ 32.6 [3],[4]   $ 32.6 [3],[4]   $ 32.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 32.6 [3],[4]   32.6 [3],[4]   29.3 [6],[7]                
Investment, Identifier [Axis]: Visual Edge Technology, Inc., Senior subordinated loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 112.4 [4],[9]   112.4 [4],[9]   103.8 [7],[10]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 45.5 [4],[9]   45.5 [4],[9]   48.8 [7],[10]                
Investment, Identifier [Axis]: Visual Edge Technology, Inc., Warrant to purchase shares of common stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.0 [4]   0.0 [4]   0.0                
Investment, Identifier [Axis]: Vobev, LLC and Vobev Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.4   5.4                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 5.4   5.4                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 5.4   $ 5.4                    
Investment, Identifier [Axis]: Vobev, LLC and Vobev Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 12.15%   12.15%     12.15% 12.15% 12.15% 12.15%        
Total first lien senior secured loans [3],[4] $ 49.6   $ 49.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 48.2   48.2                    
Investment, Identifier [Axis]: Vobev, LLC and Vobev Holdings, LLC, Warrant to purchase shares of ordinary shares                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4] 0.0   0.0                    
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 16.3   16.3   35.4                
Less: funded commitments (16.3)   (16.3)   (9.6)                
Total unfunded commitments 0.0   0.0   25.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 0.0   0.0   25.8                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.2   $ 4.2   $ 4.4                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.98% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 32.9 [3],[4]   $ 32.9 [3],[4]   $ 33.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 31.9 [3],[4]   $ 31.9 [3],[4]   $ 32.4 [6],[7]                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.98% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 4.5 [3],[4]   $ 4.5 [3],[4]   $ 14.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 4.3 [3],[4]   $ 4.3 [3],[4]   $ 14.2 [6],[7]                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.58% [1]   11.58% [1]   10.98% [2] 11.58% [1] 11.58% [1] 11.58% [1] 11.58% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 13.8 [3],[4]   $ 13.8 [3],[4]   $ 11.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 13.4 [3],[4]   $ 13.4 [3],[4]   $ 11.0 [6],[7]                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.98% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 10.7 [3],[4]   $ 10.7 [3],[4]   $ 10.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 10.3 [3],[4]   $ 10.3 [3],[4]   $ 10.5 [6],[7]                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 5                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.98% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 4.5 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 4.4 [6],[7]                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 6                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.98% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 7                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.98% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.98% [2] 10.98% [2] 10.98% [2] 10.98% [2]
Total first lien senior secured loans $ 30.9 [3],[4]   $ 30.9 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 30.0 [3],[4]   $ 30.0 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.64% [1]   11.64% [1]   10.32% [2] 11.64% [1] 11.64% [1] 11.64% [1] 11.64% [1] 10.32% [2] 10.32% [2] 10.32% [2] 10.32% [2]
Total first lien senior secured loans $ 15.3 [3],[4],[13]   $ 15.3 [3],[4],[13]   $ 8.6 [6],[7],[14]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 14.8 [3],[4],[13]   $ 14.8 [3],[4],[13]   $ 8.4 [6],[7],[14]                
Investment, Identifier [Axis]: Walnut Parent, Inc., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   10.24% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 10.24% [2] 10.24% [2] 10.24% [2] 10.24% [2]
Total first lien senior secured loans $ 14.6 [3],[4]   $ 14.6 [3],[4]   $ 14.7 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 14.0 [3],[4]   $ 14.0 [3],[4]   $ 14.2 [6],[7]                
Investment, Identifier [Axis]: Walnut Parent, Inc., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.70% [1]   10.70% [1]   10.24% [2] 10.70% [1] 10.70% [1] 10.70% [1] 10.70% [1] 10.24% [2] 10.24% [2] 10.24% [2] 10.24% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: Wand Newco 3, Inc., Second lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.44% [1]   12.44% [1]   11.63% [2] 12.44% [1] 12.44% [1] 12.44% [1] 12.44% [1] 11.63% [2] 11.63% [2] 11.63% [2] 11.63% [2]
Total first lien senior secured loans $ 182.6 [4]   $ 182.6 [4]   $ 182.6 [7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 182.6 [4]   $ 182.6 [4]   $ 178.9 [7]                
Investment, Identifier [Axis]: Wash Encore Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.12%         9.12% 9.12% 9.12% 9.12%
Total first lien senior secured loans [6],[7]         $ 98.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         96.5                
Investment, Identifier [Axis]: Wash Encore Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.85%   10.85%     10.85% 10.85% 10.85% 10.85%        
Total first lien senior secured loans [3],[4] $ 97.9   $ 97.9                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 96.0   $ 96.0                    
Investment, Identifier [Axis]: Wash Encore Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.25%   11.25%     11.25% 11.25% 11.25% 11.25%        
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.1   0.1                    
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         0.7                
Less: funded commitments         0.0                
Total unfunded commitments         0.7                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         0.7                
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 3.8   $ 3.8   $ 3.2                
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.18% [1]   10.18% [1]   10.23% [2] 10.18% [1] 10.18% [1] 10.18% [1] 10.18% [1] 10.23% [2] 10.23% [2] 10.23% [2] 10.23% [2]
Total first lien senior secured loans $ 21.0 [3],[4]   $ 21.0 [3],[4]   $ 20.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 21.0 [3],[4]   21.0 [3],[4]   20.4 [6],[7]                
Investment, Identifier [Axis]: Waverly Advisors, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         0.2                
Less: funded commitments         0.0                
Total unfunded commitments         0.2                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 0.2                
Investment, Identifier [Axis]: Waverly Advisors, LLC and WAAM Topco, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.2   0.2                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 0.2   0.2                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 0.2   0.2                    
Investment, Identifier [Axis]: Waverly Advisors, LLC and WAAM Topco, LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [5] $ 1.7   $ 1.7                    
Investment, Identifier [Axis]: Waverly Advisors, LLC and WAAM Topco, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.14%   11.14%     11.14% 11.14% 11.14% 11.14%        
Total first lien senior secured loans [3],[4],[5] $ 0.6   $ 0.6                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[5] 0.6   0.6                    
Investment, Identifier [Axis]: Waverly Advisors, LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.23%         10.23% 10.23% 10.23% 10.23%
Total first lien senior secured loans [7],[8]         $ 0.6                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [7],[8]         0.6                
Investment, Identifier [Axis]: WebPT, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.9   0.9   0.9                
Less: funded commitments (0.2)   (0.2)   (0.3)                
Total unfunded commitments 0.7   0.7   0.6                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 0.7   $ 0.7   $ 0.6                
Investment, Identifier [Axis]: WebPT, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 12.11% [1]   12.11% [1]   11.48% [2] 12.11% [1] 12.11% [1] 12.11% [1] 12.11% [1] 11.48% [2] 11.48% [2] 11.48% [2] 11.48% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 48.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 48.1 [6],[7]                
Investment, Identifier [Axis]: WebPT, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 14.00% [1]   14.00% [1]   11.26% [2] 14.00% [1] 14.00% [1] 14.00% [1] 14.00% [1] 11.26% [2] 11.26% [2] 11.26% [2] 11.26% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.2 [3],[4]   0.2 [3],[4]   0.3 [6],[7]                
Investment, Identifier [Axis]: Wellness AcquisitionCo, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 3.9   3.9   3.9                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 3.9   3.9   3.9                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 3.9   $ 3.9   $ 3.9                
Investment, Identifier [Axis]: Wellness AcquisitionCo, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.86% [1]   10.86% [1]   9.91% [2] 10.86% [1] 10.86% [1] 10.86% [1] 10.86% [1] 9.91% [2] 9.91% [2] 9.91% [2] 9.91% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]                
Investment, Identifier [Axis]: Wellpath Holdings, Inc.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.0   12.0                    
Less: funded commitments (5.3)   (5.3)                    
Total unfunded commitments 6.7   6.7                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 6.7   $ 6.7                    
Investment, Identifier [Axis]: Wellpath Holdings, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.98%   10.98%     10.98% 10.98% 10.98% 10.98%        
Total first lien senior secured loans [4],[11] $ 33.4   $ 33.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[11] $ 24.6   $ 24.6                    
Investment, Identifier [Axis]: Wellpath Holdings, Inc., First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.66%   10.66%     10.66% 10.66% 10.66% 10.66%        
Total first lien senior secured loans [4],[13] $ 4.1   $ 4.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [4],[13] 3.0   3.0                    
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.1   4.1   4.1                
Less: funded commitments (0.2)   (0.2)   (1.0)                
Total unfunded commitments 3.9   3.9   3.1                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 3.9   3.9   $ 3.1                
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.48%         10.48% 10.48% 10.48% 10.48%
Total first lien senior secured loans 0.0 [16]   0.0 [16]   $ 18.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.0 [16]   $ 0.0 [16]   $ 17.8 [6],[7]                
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.48% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 17.9 [3],[4]   $ 17.9 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 17.9 [3],[4]   $ 17.9 [3],[4]   $ 0.2 [6],[7]                
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.48% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.48% [2] 10.48% [2] 10.48% [2] 10.48% [2]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.2 [6],[7]                
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.14%   11.14%     11.14% 11.14% 11.14% 11.14%        
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.2   0.2                    
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         10.09%         10.09% 10.09% 10.09% 10.09%
Total first lien senior secured loans [6],[7],[14]         $ 0.8                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7],[14]         0.8                
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, Limited partnership interests                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.6 [4]   $ 5.6 [4]   $ 5.1 [7]                
Investment, Identifier [Axis]: Winebow Holdings, Inc. and The Vintner Group, Inc., First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.45% [1]   11.45% [1]   10.63% [2] 11.45% [1] 11.45% [1] 11.45% [1] 11.45% [1] 10.63% [2] 10.63% [2] 10.63% [2] 10.63% [2]
Total first lien senior secured loans $ 27.9 [3],[4]   $ 27.9 [3],[4]   $ 28.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 27.0 [3],[4]   27.0 [3],[4]   27.5 [6],[7]                
Investment, Identifier [Axis]: WorkWave Intermediate II, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.2   5.2   5.2                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 5.2   5.2   5.2                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 5.2   5.2   5.2                
Investment, Identifier [Axis]: WorkWave Intermediate II, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans 71.6 [3],[4]   71.6 [3],[4]   67.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 71.6 [3],[4]   71.6 [3],[4]   $ 67.4 [6],[7]                
Investment, Identifier [Axis]: WorkWave Intermediate II, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         11.44%         11.44% 11.44% 11.44% 11.44%
Total first lien senior secured loans 18.8 [3],[4]   18.8 [3],[4]   $ 17.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 18.8 [3],[4]   18.8 [3],[4]   17.3 [6],[7]                
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P.                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 4.0   4.0                    
Less: funded commitments (0.7)   (0.7)                    
Total unfunded commitments 3.3   3.3                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 3.3   3.3                    
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P. 1                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 0.2   0.2                    
Less: funded commitments 0.0   0.0                    
Total unfunded commitments 0.2   0.2                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments 0.2   0.2                    
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., Common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 1.9   $ 1.9                    
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.23%   11.23%     11.23% 11.23% 11.23% 11.23%        
Total first lien senior secured loans [3],[4] $ 6.1   $ 6.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 5.9   $ 5.9                    
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.49%   11.49%     11.49% 11.49% 11.49% 11.49%        
Total first lien senior secured loans [3],[4] $ 1.4   $ 1.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 1.4   $ 1.4                    
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.23%   11.23%     11.23% 11.23% 11.23% 11.23%        
Total first lien senior secured loans [3],[4],[13] $ 0.2   $ 0.2                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[13] $ 0.2   $ 0.2                    
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.34%   11.34%     11.34% 11.34% 11.34% 11.34%        
Total first lien senior secured loans [3],[4],[13] $ 0.3   $ 0.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4],[13] 0.3   0.3                    
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 5.6   5.6   8.9                
Less: funded commitments (4.2)   (4.2)   (0.2)                
Total unfunded commitments 1.4   1.4   8.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 1.4   1.4   8.7                
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, Class A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 2.8 [4]   2.8 [4]   4.2 [7]                
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, Class B units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.7 [4]   $ 0.7 [4]   $ 1.1 [7]                
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.13% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.13% [2] 10.13% [2] 10.13% [2] 10.13% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 37.0 [6]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 36.6 [6]                
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 11.14% [1]   11.14% [1]   10.13% [2] 11.14% [1] 11.14% [1] 11.14% [1] 11.14% [1] 10.13% [2] 10.13% [2] 10.13% [2] 10.13% [2]
Total first lien senior secured loans $ 36.7 [3],[4]   $ 36.7 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 35.3 [3],[4]   $ 35.3 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         12.25%         12.25% 12.25% 12.25% 12.25%
Total first lien senior secured loans [6],[7]         $ 0.2                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.2                
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 11.17%   11.17%     11.17% 11.17% 11.17% 11.17%        
Total first lien senior secured loans [3],[4] $ 3.1   $ 3.1                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 3.0   $ 3.0                    
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.00%   13.00%     13.00% 13.00% 13.00% 13.00%        
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] $ 0.4   $ 0.4                    
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 13.00%   13.00%     13.00% 13.00% 13.00% 13.00%        
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 0.6   0.6                    
Investment, Identifier [Axis]: YE Brands Holdings, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.2   2.2   2.2                
Less: funded commitments 0.0   0.0   (1.5)                
Total unfunded commitments 2.2   2.2   0.7                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments $ 2.2   $ 2.2   $ 0.7                
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.34% [1]   10.34% [1]   9.93% [2] 10.34% [1] 10.34% [1] 10.34% [1] 10.34% [1] 9.93% [2] 9.93% [2] 9.93% [2] 9.93% [2]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 8.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 8.2 [6],[7]                
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 10.59% [1]   10.59% [1]   9.68% [2] 10.59% [1] 10.59% [1] 10.59% [1] 10.59% [1] 9.68% [2] 9.68% [2] 9.68% [2] 9.68% [2]
Total first lien senior secured loans $ 8.1 [3],[4]   $ 8.1 [3],[4]   $ 0.1 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 8.1 [3],[4]   8.1 [3],[4]   $ 0.1 [6],[7]                
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.47%         9.47% 9.47% 9.47% 9.47%
Total first lien senior secured loans [6],[7]         $ 1.5                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         1.5                
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         21.5                
Less: funded commitments         (0.1)                
Total unfunded commitments         21.4                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 21.4                
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [2]         9.48%         9.48% 9.48% 9.48% 9.48%
Total first lien senior secured loans [6],[7]         $ 0.1                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [6],[7]         0.1                
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [15]         0.0                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [15]         0.0                
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, Series A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value         5.5                
Investment, Identifier [Axis]: ZB Holdco LLC and ZB TopCo LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 8.3   8.3                    
Less: funded commitments (1.2)   (1.2)                    
Total unfunded commitments 7.1   7.1                    
Less: commitments substantially at discretion of the Company 0.0   0.0                    
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                    
Total net adjusted unfunded revolving and delayed draw loan commitments $ 7.1   $ 7.1                    
Investment, Identifier [Axis]: ZB Holdco LLC and ZB TopCo LLC, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon | Rate [1] 10.14%   10.14%     10.14% 10.14% 10.14% 10.14%        
Total first lien senior secured loans [3],[4] $ 13.3   $ 13.3                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [3],[4] 13.3   13.3                    
Investment, Identifier [Axis]: ZB Holdco LLC and ZB TopCo LLC, First lien senior secured revolving loan                          
Schedule of Investments [Line Items]                          
Total first lien senior secured loans [16] 0.0   0.0                    
Investments Activity And Fair Value Table [Abstract]                          
Fair Value [16] 0.0   0.0                    
Investment, Identifier [Axis]: ZB Holdco LLC and ZB TopCo LLC, Series A units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 5.7   5.7                    
Investment, Identifier [Axis]: ZBS Mechanical Group Co-Invest Fund 2, LLC, Membership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 9.8   9.8                    
Investment, Identifier [Axis]: ZenDesk, Inc., Zoro TopCo, Inc. and Zoro TopCo, LP                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 12.8   12.8   16.8                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 12.8   12.8   16.8                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 12.8   12.8   16.8                
Investment, Identifier [Axis]: ZenDesk, Inc., Zoro TopCo, Inc. and Zoro TopCo, LP, Class A common units                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 2.8 [4]   $ 2.8 [4]   $ 2.7 [7]                
Investment, Identifier [Axis]: ZenDesk, Inc., Zoro TopCo, Inc. and Zoro TopCo, LP, First lien senior secured loan                          
Schedule of Investments [Line Items]                          
Coupon 12.25% [1]   12.25% [1]   11.04% [2] 12.25% [1] 12.25% [1] 12.25% [1] 12.25% [1] 11.04% [2] 11.04% [2] 11.04% [2] 11.04% [2]
Total first lien senior secured loans $ 42.8 [3],[4]   $ 42.8 [3],[4]   $ 42.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 41.9 [3],[4]   41.9 [3],[4]   41.6 [6],[7]                
Investment, Identifier [Axis]: ZenDesk, Inc., Zoro TopCo, Inc. and Zoro TopCo, LP, Series A preferred stock                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 27.3 [4]   $ 27.3 [4]   $ 26.8 [7]                
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.01% [1]   13.01% [1]   11.97% [2] 13.01% [1] 13.01% [1] 13.01% [1] 13.01% [1] 11.97% [2] 11.97% [2] 11.97% [2] 11.97% [2]
Total first lien senior secured loans $ 56.0 [3],[4]   $ 56.0 [3],[4]   $ 55.8 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 56.0 [3],[4]   $ 56.0 [3],[4]   $ 55.2 [6],[7]                
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.01% [1]   13.01% [1]   11.97% [2] 13.01% [1] 13.01% [1] 13.01% [1] 13.01% [1] 11.97% [2] 11.97% [2] 11.97% [2] 11.97% [2]
Total first lien senior secured loans $ 5.4 [3],[4]   $ 5.4 [3],[4]   $ 56.0 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.4 [3],[4]   $ 5.4 [3],[4]   $ 55.4 [6],[7]                
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 3                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.01% [1]   13.01% [1]   11.97% [2] 13.01% [1] 13.01% [1] 13.01% [1] 13.01% [1] 11.97% [2] 11.97% [2] 11.97% [2] 11.97% [2]
Total first lien senior secured loans $ 24.3 [3],[4]   $ 24.3 [3],[4]   $ 24.3 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 24.3 [3],[4]   $ 24.3 [3],[4]   $ 24.1 [6],[7]                
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 4                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.01% [1]   13.01% [1]   11.97% [2] 13.01% [1] 13.01% [1] 13.01% [1] 13.01% [1] 11.97% [2] 11.97% [2] 11.97% [2] 11.97% [2]
Total first lien senior secured loans $ 55.8 [3],[4]   $ 55.8 [3],[4]   $ 5.4 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value 55.8 [3],[4]   55.8 [3],[4]   5.3 [6],[7]                
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments 2.5   2.5   2.5                
Less: funded commitments 0.0   0.0   0.0                
Total unfunded commitments 2.5   2.5   2.5                
Less: commitments substantially at discretion of the Company 0.0   0.0   0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0   0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments 2.5   2.5   2.5                
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Limited partnership interest                          
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 5.1 [4],[5]   $ 5.1 [4],[5]   $ 3.7 [7],[8]                
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Second lien senior secured loan 1                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.20% [1]   13.20% [1]   12.07% [2] 13.20% [1] 13.20% [1] 13.20% [1] 13.20% [1] 12.07% [2] 12.07% [2] 12.07% [2] 12.07% [2]
Total first lien senior secured loans $ 17.2 [4]   $ 17.2 [4]   $ 30.6 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 16.3 [4]   $ 16.3 [4]   $ 27.2 [6],[7]                
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Second lien senior secured loan 2                          
Schedule of Investments [Line Items]                          
Coupon | Rate 13.20% [1]   13.20% [1]   12.38% [2] 13.20% [1] 13.20% [1] 13.20% [1] 13.20% [1] 12.38% [2] 12.38% [2] 12.38% [2] 12.38% [2]
Total first lien senior secured loans $ 30.6 [4]   $ 30.6 [4]   $ 17.2 [6],[7]                
Investments Activity And Fair Value Table [Abstract]                          
Fair Value $ 29.1 [4]   $ 29.1 [4]   15.3 [6],[7]                
Investment, Identifier [Axis]: n2y Holding, LLC                          
Financial Support for Nonconsolidated Legal Entity [Abstract]                          
Total commitments         0.1                
Less: funded commitments         0.0                
Total unfunded commitments         0.1                
Less: commitments substantially at discretion of the Company         0.0                
Less: unavailable commitments due to borrowing base or other covenant restrictions         0.0                
Total net adjusted unfunded revolving and delayed draw loan commitments         $ 0.1                
[1] Investments without an interest rate are non-income producing.
[2] Investments without an interest rate are non-income producing.
[3] Loan includes interest rate floor feature.
[4] These assets are pledged as collateral under the Company’s or the Company’s consolidated subsidiaries’ various revolving credit facilities and, as a result, are not directly available to the creditors of the Company to satisfy any obligations of the Company other than the obligations under each of the respective facilities (see Note 5).
[5] This portfolio company is not a qualifying asset under Section 55(a) of the Investment Company Act. Under the Investment Company Act, the Company may not acquire any non-qualifying asset unless, at the time such acquisition is made, qualifying assets represent at least 70% of the Company's total assets. Pursuant to Section 55(a) of the Investment Company Act, 24% of the Company's total assets are represented by investments at fair value and other assets that are considered "non-qualifying assets" as of June 30, 2023.
[6] Loan includes interest rate floor feature.
[7] These assets are pledged as collateral under the Company’s or the Company’s consolidated subsidiaries’ various revolving credit facilities and, as a result, are not directly available to the creditors of the Company to satisfy any obligations of the Company other than the obligations under each of the respective facilities (see Note 5).
[8] This portfolio company is not a qualifying asset under Section 55(a) of the Investment Company Act. Under the Investment Company Act, the Company may not acquire any non-qualifying asset unless, at the time such acquisition is made, qualifying assets represent at least 70% of the Company's total assets. Pursuant to Section 55(a) of the Investment Company Act, 25% of the Company's total assets are represented by investments at fair value and other assets that are considered "non-qualifying assets" as of December 31, 2022.
[9] Loan was on non-accrual status as of June 30, 2023.
[10] Loan was on non-accrual status as of December 31, 2022.
[11] Other than the investments noted by this footnote, the fair value of the Company’s investments is determined using unobservable inputs that are significant to the overall fair value measurement. See Note 8 to the consolidated financial statements for more information regarding the fair value of the Company’s investments.
[12] Other than the investments noted by this footnote, the fair value of the Company’s investments is determined using unobservable inputs that are significant to the overall fair value measurement. See Note 8 to the consolidated financial statements for more information regarding the fair value of the Company’s investments.
[13] As of June 30, 2023, in addition to the amounts funded by the Company under this first lien senior secured revolving loan, there were also letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
[14] As of December 31, 2022, in addition to the amounts funded by the Company under this first lien senior secured revolving loan, there were also letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
[15] As of December 31, 2022, no amounts were funded by the Company under this first lien senior secured revolving loan; however, there were letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
[16] As of June 30, 2023, no amounts were funded by the Company under this first lien senior secured revolving loan; however, there were letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
[17] The Company sold a participating interest of approximately $34.9 in aggregate principal amount outstanding of the portfolio company’s first lien senior secured revolving loan. As the transaction did not qualify as a “true sale” in accordance with U.S. generally accepted accounting principles (“GAAP”), the Company recorded a corresponding $34.9 secured borrowing, at fair value, included in “secured borrowings” in the accompanying consolidated balance sheet. As of June 30, 2023, the interest rate in effect for the secured borrowing was 12.76%.
[18] The Company sold a participating interest of approximately $79.0 in aggregate principal amount outstanding of the portfolio company’s first lien senior secured revolving loan. As the transaction did not qualify as a “true sale” in accordance with GAAP, the Company recorded a corresponding $79.0 secured borrowing, at fair value, included in “secured borrowings” in the accompanying consolidated balance sheet. As of December 31, 2022, the interest rate in effect for the secured borrowing was 11.62%.
[19] In addition to the interest earned based on the stated interest rate of this security, the Company is entitled to receive an additional interest amount of 2.00% on $40.9 in aggregate principal amount of a “first out” tranche of the portfolio company’s senior term debt previously syndicated by the Company into “first out” and “last out” tranches, whereby the “first out” tranche will have priority as to the “last out” tranche with respect to payments of principal, interest and any other amounts due thereunder.
[20] In addition to the interest earned based on the stated interest rate of this security, the Company is entitled to receive an additional interest amount of 2.00% on $40.9 in aggregate principal amount of a “first out” tranche of the portfolio company’s senior term debt previously syndicated by the Company into “first out” and “last out” tranches, whereby the “first out” tranche will have priority as to the “last out” tranche with respect to payments of principal, interest and any other amounts due thereunder.
[21] In addition to the interest earned based on the stated contractual interest rate of this security, the certificates entitle the holders thereof to receive a portion of the excess cash flow from the SDLP’s loan portfolio, after expenses, which may result in a return to the Company greater than the contractual stated interest rate.
[22] In addition to the interest earned based on the stated contractual interest rate of this security, the certificates entitle the holders thereof to receive a portion of the excess cash flow from the SDLP’s loan portfolio, after expenses, which may result in a return to the Company greater than the contractual stated interest rate.
v3.23.2
CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY - USD ($)
$ in Millions
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock
Capital in Excess of Par Value
Capital in Excess of Par Value
Cumulative Effect, Period of Adoption, Adjustment
Accumulated Undistributed (Overdistributed) Earnings
Accumulated Undistributed (Overdistributed) Earnings
Cumulative Effect, Period of Adoption, Adjustment
Beginning balance (in shares) at Dec. 31, 2021     468,000,000        
Beginning balance at Dec. 31, 2021 $ 8,868 $ (2) $ 0 $ 8,553 $ (4) $ 315 $ 2
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuances of common stock (net of offering and underwriting costs) (in shares)     25,000,000        
Issuance of common stock, net of offering and underwriting costs 510     510      
Shares issued in connection with dividend reinvestment plan 12     12      
Net investment income 198         198  
Net realized gains (losses) on investments, foreign currency, extinguishment of debt and other transactions 10         10  
Net unrealized gains (losses) on investments, foreign currency and other transactions 3         3  
Dividends declared and payable (220)         (220)  
Ending balance (in shares) at Mar. 31, 2022     493,000,000        
Ending balance at Mar. 31, 2022 9,379   $ 0 9,071   308  
Beginning balance (in shares) at Dec. 31, 2021     468,000,000        
Beginning balance at Dec. 31, 2021 $ 8,868 $ (2) $ 0 8,553 $ (4) 315 $ 2
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Shares issued in connection with dividend reinvestment plan (in shares) 600,000            
Net investment income $ 455            
Net unrealized gains (losses) on investments, foreign currency and other transactions (140)            
Ending balance (in shares) at Jun. 30, 2022     496,000,000        
Ending balance at Jun. 30, 2022 9,335   $ 0 9,139   196  
Beginning balance (in shares) at Mar. 31, 2022     493,000,000        
Beginning balance at Mar. 31, 2022 9,379   $ 0 9,071   308  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuances of common stock (net of offering and underwriting costs) (in shares)     3,000,000        
Issuance of common stock, net of offering and underwriting costs 68     68      
Net investment income 257         257  
Net realized gains (losses) on investments, foreign currency, extinguishment of debt and other transactions (3)         (3)  
Net unrealized gains (losses) on investments, foreign currency and other transactions (143)         (143)  
Dividends declared and payable (223)         (223)  
Ending balance (in shares) at Jun. 30, 2022     496,000,000        
Ending balance at Jun. 30, 2022 9,335   $ 0 9,139   196  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuances of common stock (net of offering and underwriting costs) (in shares)     12,000,000        
Issuance of common stock, net of offering and underwriting costs 231     231      
Net investment income 288         288  
Net unrealized gains (losses) on investments, foreign currency and other transactions (184)         (184)  
Dividends declared and payable (234)         (234)  
Ending balance (in shares) at Sep. 30, 2022     508,000,000        
Ending balance at Sep. 30, 2022 9,436   $ 0 9,370   66  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuances of common stock (net of offering and underwriting costs) (in shares)     10,000,000        
Issuance of common stock, net of offering and underwriting costs 192   $ 1 191      
Shares issued in connection with dividend reinvestment plan (in shares)     1,000,000        
Shares issued in connection with dividend reinvestment plan 17     17      
Net investment income 349         349  
Net realized gains (losses) on investments, foreign currency, extinguishment of debt and other transactions 26         26  
Net unrealized gains (losses) on investments, foreign currency and other transactions (201)         (201)  
Dividends declared and payable (264)         (264)  
Tax reclassification of stockholders’ equity in accordance with GAAP 0     (22)   22  
Ending balance (in shares) at Dec. 31, 2022     519,000,000        
Ending balance at Dec. 31, 2022 9,555   $ 1 9,556   (2)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuances of common stock (net of offering and underwriting costs) (in shares)     26,000,000        
Issuance of common stock, net of offering and underwriting costs 477     477      
Net investment income 318         318  
Net realized gains (losses) on investments, foreign currency, extinguishment of debt and other transactions (50)         (50)  
Net unrealized gains (losses) on investments, foreign currency and other transactions 10         10  
Dividends declared and payable (261)         (261)  
Ending balance (in shares) at Mar. 31, 2023     545,000,000        
Ending balance at Mar. 31, 2023 10,049   $ 1 10,033   15  
Beginning balance (in shares) at Dec. 31, 2022     519,000,000        
Beginning balance at Dec. 31, 2022 $ 9,555   $ 1 9,556   (2)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Shares issued in connection with dividend reinvestment plan (in shares) 700,000            
Net investment income $ 632            
Net unrealized gains (losses) on investments, foreign currency and other transactions 108            
Ending balance (in shares) at Jun. 30, 2023     557,000,000        
Ending balance at Jun. 30, 2023 10,354   $ 1 10,273   80  
Beginning balance (in shares) at Mar. 31, 2023     545,000,000        
Beginning balance at Mar. 31, 2023 10,049   $ 1 10,033   15  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuances of common stock (net of offering and underwriting costs) (in shares)     12,000,000        
Issuance of common stock, net of offering and underwriting costs 227     227      
Shares issued in connection with dividend reinvestment plan 13     13      
Net investment income 314         314  
Net realized gains (losses) on investments, foreign currency, extinguishment of debt and other transactions (81)         (81)  
Net unrealized gains (losses) on investments, foreign currency and other transactions 98         98  
Dividends declared and payable (266)         (266)  
Ending balance (in shares) at Jun. 30, 2023     557,000,000        
Ending balance at Jun. 30, 2023 $ 10,354   $ 1 $ 10,273   $ 80  
v3.23.2
CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY (Parenthetical) - $ / shares
 3 Months Ended 12 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Statement of Stockholders' Equity [Abstract]              
Cash dividends declared (in usd per share) $ 0.48 $ 0.48 $ 0.51 $ 0.46 $ 0.45 $ 0.45  
Accounting Standards Update [Extensible Enumeration]             Accounting Standards Update 2020-06 [Member]
v3.23.2
CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
OPERATING ACTIVITIES:    
Net increase in stockholders’ equity resulting from operations $ 609 $ 322
Adjustments to reconcile net increase in stockholders’ equity resulting from operations:    
Net realized losses (gains) on investments, foreign currency and other transactions 131 (55)
Net unrealized (gains) losses on investments, foreign currency and other transactions (108) 140
Realized loss on extinguishment of debt 0 48
Net accretion of discount on investments (9) (5)
PIK interest (81) (63)
Collections of PIK interest 27 28
PIK dividends (95) (82)
Collections of PIK dividends 11 4
Amortization of debt issuance costs 15 15
Net amortization of premium on notes payable (2) (3)
Proceeds from sales and repayments of investments and other transactions 2,858 3,608
Purchases of investments (2,452) (4,849)
Changes in operating assets and liabilities:    
Interest receivable (9) 7
Other assets (16) 27
Operating lease right-of-use asset 5 3
Base management fees payable 0 6
Income based fees payable (2) (10)
Capital gains incentive fees payable (2) (53)
Interest and facility fees payable (18) (11)
Payable to participants 8 (57)
Accounts payable and other liabilities (39) (33)
Operating lease liabilities (7) (6)
Net cash provided by (used in) operating activities 824 (1,019)
FINANCING ACTIVITIES:    
Borrowings on debt 1,897 3,550
Repayments and repurchases of debt (2,739) (2,893)
Debt issuance costs (12) (15)
Net proceeds from issuance of common stock 704 579
Dividends paid (514) (431)
Secured borrowings, net (44) 4
Net cash (used in) provided by financing activities (708) 794
CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 116 (225)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD 337 486
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD 453 261
Supplemental Information:    
Interest paid during the period 271 182
Taxes, including excise tax, paid during the period 28 54
Dividends declared and payable during the period $ 527 $ 443
v3.23.2
ORGANIZATION
 6 Months Ended
Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
ORGANIZATION
1. ORGANIZATION

Ares Capital Corporation (the “Company”) is a specialty finance company that is a closed-end, non-diversified management investment company incorporated in Maryland. The Company has elected to be regulated as a business development company under the Investment Company Act of 1940, as amended (together with the rules and regulations promulgated thereunder, the “Investment Company Act”). The Company has elected to be treated as a regulated investment company (“RIC”) under the Internal Revenue Code of 1986, as amended (the “Code”), and operates in a manner so as to qualify for the tax treatment applicable to RICs.
 
The Company’s investment objective is to generate both current income and capital appreciation through debt and equity investments. The Company invests primarily in first lien senior secured loans (including “unitranche” loans, which are loans that combine both senior and subordinated debt, generally in a first lien position) and second lien senior secured loans. In addition to senior secured loans, the Company also invests in subordinated loans (sometimes referred to as mezzanine debt), which in some cases includes an equity component, and preferred equity. To a lesser extent, the Company also makes common equity investments.
 
The Company is externally managed by Ares Capital Management LLC (“Ares Capital Management” or the Company’s “investment adviser”), a subsidiary of Ares Management Corporation (“Ares Management”), a publicly traded, leading global alternative investment manager, pursuant to an investment advisory and management agreement. Ares Operations LLC (“Ares Operations” or the Company’s “administrator”), a subsidiary of Ares Management, provides certain administrative and other services necessary for the Company to operate.
v3.23.2
SIGNIFICANT ACCOUNTING POLICIES
 6 Months Ended
Jun. 30, 2023
Accounting Policies [Abstract]  
SIGNIFICANT ACCOUNTING POLICIES
2. SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation
 
The accompanying consolidated financial statements have been prepared on the accrual basis of accounting in conformity with U.S. generally accepted accounting principles (“GAAP”), and include the accounts of the Company and its consolidated subsidiaries. The Company is an investment company following accounting and reporting guidance in Accounting Standards Codification (“ASC”) 946, Financial Services—Investment Companies. The consolidated financial statements reflect all adjustments and reclassifications that, in the opinion of management, are necessary for the fair presentation of the results of operations and financial condition as of and for the periods presented. All significant intercompany balances and transactions have been eliminated.

Interim financial statements are prepared in accordance with GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Articles 6 or 10 of Regulation S-X. In the opinion of management, all adjustments, consisting solely of normal recurring accruals considered necessary for the fair presentation of financial statements for the interim period presented, have been included. The current period’s results of operations will not necessarily be indicative of results that ultimately may be achieved for the fiscal year ending December 31, 2023.

The Company reclassified certain industry groupings of its portfolio companies presented in the accompanying consolidated financial statements as of December 31, 2022 to align with the recently updated Global Industry Classification Standards (“GICS”), where applicable. These reclassifications had no impact on the prior period’s consolidated balance sheet.
 
Cash, Cash Equivalents and Restricted Cash
 
Cash and cash equivalents include funds from time to time deposited with financial institutions and short-term, liquid investments in a money market account. Cash and cash equivalents are carried at cost which approximates fair value. As of June 30, 2023 and December 31, 2022, there was $73 and $12, respectively, of cash denominated in foreign currencies included within “cash and cash equivalents” or “restricted cash” in the accompanying consolidated balance sheet.
Restricted cash primarily relates to cash received by the Company on behalf of participating lenders as a result of the Company’s role as administrative agent for certain loans. The cash received is generally distributed to participating lenders shortly after the receipt of such cash.

The following table provides a reconciliation of cash, cash equivalents and restricted cash in the consolidated balance sheet to the total amount shown at the end of the applicable period in the consolidated statement of cash flows:

 As of
 June 30, 2023December 31, 2022
Cash and cash equivalents$411 $303 
Restricted cash42 34 
Total cash, cash equivalents and restricted cash shown in the consolidated statement of cash flows$453 $337 
 
Concentration of Credit Risk
 
The Company places its cash and cash equivalents with financial institutions and, at times, cash held in depository or money market accounts may exceed the Federal Deposit Insurance Corporation insured limits.
 
Investments
 
Investment transactions are recorded on the trade date. Realized gains or losses are measured by the difference between the net proceeds from the repayment or sale and the amortized cost basis of the investment using the specific identification method without regard to unrealized gains or losses previously recognized, and include investments charged off during the period, net of recoveries. Unrealized gains or losses primarily reflect the change in investment values, including the reversal of previously recorded unrealized gains or losses when gains or losses are realized.

Effective October 1, 2022, pursuant to Rule 2a-5 under the Investment Company Act, the Company’s board of directors designated the Company’s investment adviser as the Company’s valuation designee to perform the fair value determinations for investments held by the Company without readily available market quotations subject to the overall supervision of the Company’s board of directors.
 
Investments for which market quotations are readily available are typically valued at such market quotations. In order to validate market quotations, the Company’s investment adviser, as the valuation designee, looks at a number of factors to determine if the quotations are representative of fair value, including the source and nature of the quotations. Debt and equity securities that are not publicly traded or whose market prices are not readily available (i.e., substantially all of the Company’s investments) are valued at fair value as determined in good faith by the Company’s investment adviser, as the valuation designee, subject to the oversight of the Company’s board of directors, based on, among other things, the input of the Company’s independent third-party valuation firms that have been engaged to support the valuation of such portfolio investments at least once during a trailing 12-month period (with certain de minimis exceptions) and under a valuation policy and a consistently applied valuation process. The valuation process is conducted at the end of each fiscal quarter by the Company’s investment adviser, and a portion of the Company’s investment portfolio at fair value is subject to review by an independent third-party valuation firm each quarter. In addition, the Company’s independent registered public accounting firm obtains an understanding of, and performs select procedures relating to, the Company’s valuation process within the context of performing the Company’s integrated audit.
 
As part of the valuation process, the Company’s investment adviser may take into account the following types of factors, if relevant, in determining the fair value of the Company’s investments: the enterprise value of a portfolio company (the entire value of the portfolio company to a market participant, including the sum of the values of debt and equity securities used to capitalize the enterprise at a point in time), the nature and realizable value of any collateral, the portfolio company’s ability to make payments and its earnings and discounted cash flow, the markets in which the portfolio company does business, a comparison of the portfolio company’s securities to any similar publicly traded securities, changes in the interest rate environment and the credit markets, which may affect the price at which similar investments would trade in their principal markets and other relevant factors. When an external event such as a purchase transaction, public offering or subsequent sale occurs, the Company’s investment adviser considers the pricing indicated by the external event to corroborate the valuation.
 
Because there is not a readily available market value for most of the investments in the Company’s portfolio, substantially all of the Company’s portfolio investments are valued at fair value as determined in good faith by its investment adviser, as the valuation designee, as described herein. Due to the inherent uncertainty of determining the fair value of investments that do not have a readily available market value, the fair value of the Company’s investments may fluctuate from period to period. Additionally, the fair value of the Company’s investments may differ significantly from the values that would have been used had a ready market existed for such investments and may differ materially from the values that the Company may ultimately realize. Further, such investments are generally subject to legal and other restrictions on resale or otherwise are less liquid than publicly traded securities. If the Company was required to liquidate a portfolio investment in a forced or liquidation sale, the Company could realize significantly less than the value at which the Company has recorded it.
 
In addition, changes in the market environment and other events that may occur over the life of the investments may cause the gains or losses ultimately realized on these investments to be different than the unrealized gains or losses reflected in the valuations currently assigned.

The Company’s investment adviser, as the valuation designee, subject to the oversight of the Company’s board of directors undertakes a multi-step valuation process each quarter, as described below:

•The Company’s quarterly valuation process begins with a preliminary valuation being prepared by the investment professionals responsible for the portfolio investment in conjunction with the Company’s portfolio management and valuation team.

•Preliminary valuations are reviewed and discussed by the valuation committee of the Company’s investment adviser.

•The valuation committee of the Company’s investment adviser determines the fair value of each investment in the Company’s portfolio without a readily available market quotation in good faith based on, among other things, the input of the independent third-party valuation firms, where applicable.
 
See Note 8 for more information on the Company’s valuation process.

Interest Income Recognition
 
Interest income is recorded on an accrual basis and includes the accretion of discounts, amortization of premiums and payment-in-kind (“PIK”) interest. Discounts from and premiums to par value on investments purchased are accreted/amortized into interest income over the life of the respective security using the effective yield method. To the extent loans contain PIK provisions, PIK interest, computed at the contractual rate specified in each applicable agreement, is accrued and recorded as interest income and added to the principal balance of the loan. PIK interest income added to the principal balance is generally collected upon repayment of the outstanding principal. To maintain the Company’s tax status as a RIC, this non-cash source of income must be paid out to stockholders in the form of dividends for the year the income was earned, even though the Company has not yet collected the cash. The amortized cost of investments represents the original cost adjusted for any accretion of discounts, amortization of premiums and PIK interest.

Loans are generally placed on non-accrual status when principal or interest payments are past due 30 days or more or when there is reasonable doubt that principal or interest will be collected in full. Accrued and unpaid interest is generally reversed when a loan is placed on non-accrual status. Interest payments received on non-accrual loans may be recognized as income or applied to principal depending upon the Company’s judgment regarding collectability. Non-accrual loans are restored to accrual status when past due principal and interest are paid or there is no longer any reasonable doubt that such principal or interest will be collected in full and, in the Company’s judgment, are likely to remain current. The Company may make exceptions to this policy if the loan has sufficient collateral value (i.e., typically measured as enterprise value of the portfolio company) or is in the process of collection.

Dividend Income Recognition 

Dividend income on preferred equity is recorded on an accrual basis to the extent that such amounts are payable by the portfolio company and are expected to be collected. Dividend income on common equity is recorded on the record date for private portfolio companies or on the ex-dividend date for publicly traded portfolio companies. To the extent a preferred equity contains PIK provisions, PIK dividends, computed at the contractual rate specified in each applicable agreement, are accrued and recorded as dividend income and added to the principal balance of the preferred equity. PIK dividends added to the principal balance are generally collected upon redemption of the equity.
 
Capital Structuring Service Fees and Other Income
 
In pursuit of the Company’s investment objective, the Company’s investment adviser seeks to provide assistance to its portfolio companies and in return the Company may receive fees for capital structuring services. These fees are fixed based on contractual terms, are generally only available to the Company as a result of the Company’s underlying investments, are normally paid at the closing of the investments, are generally non-recurring and non-refundable and are recognized as revenue when earned upon closing of the investment. The services that the Company’s investment adviser provides vary by investment, but generally include reviewing existing credit facilities, arranging bank financing, arranging equity financing, structuring financing from multiple lenders, structuring financing from multiple equity investors, restructuring existing loans, raising equity and debt capital, and providing general financial advice, which concludes upon closing of the investment. Any services of the above nature subsequent to the closing would generally generate a separate fee payable to the Company. In certain instances where the Company is invited to participate as a co-lender in a transaction and does not provide significant services in connection with the investment, a portion of loan fees paid to the Company in such situations will be deferred and amortized over the contractual life of the loan.

Other income includes amendment fees that are fixed based on contractual terms and are generally non-recurring and
non-refundable and are recognized as revenue when earned upon closing of the related transaction. Other income also includes fees for management and consulting services, agency services, loan guarantees, commitments, and other services rendered by the Company to portfolio companies. Such fees are fixed based on contractual terms and are recognized as income as services are rendered.
 
Foreign Currency Translation
 
The Company’s books and records are maintained in U.S. dollars. Any foreign currency amounts are translated into U.S. dollars on the following basis:
 
(1)Fair value of investment securities, other assets and liabilities—at the exchange rates prevailing at the end of the period.

(2)Purchases and sales of investment securities, income and expenses—at the exchange rates prevailing on the respective dates of such transactions, income or expenses.
 
Results of operations based on changes in foreign exchange rates are separately disclosed in the statement of operations, if any. Foreign security and currency translations may involve certain considerations and risks not typically associated with investing in U.S. companies and U.S. government securities. These risks include, but are not limited to, currency fluctuations and revaluations and future adverse political, social and economic developments, which could cause investments in foreign markets to be less liquid and prices more volatile than those of comparable U.S. companies or U.S. government securities. 

Derivative Instruments
 
The Company does not utilize hedge accounting and as such values its derivatives at fair value with the unrealized gains or losses recorded in “net unrealized gains (losses) from foreign currency and other transactions” in the Company’s consolidated statement of operations.
 
Equity Offering Expenses
 
The Company’s offering costs are charged against the proceeds from equity offerings when proceeds are received.
 
Debt Issuance Costs
 
Debt issuance costs are amortized over the life of the related debt instrument using the straight line method or the effective yield method, depending on the type of debt instrument.

Secured Borrowings

The Company follows the guidance in ASC Topic 860, Transfers and Servicing (“ASC Topic 860”), when accounting for participations and other partial loan sales. Certain loan sales do not qualify for sale accounting under ASC Topic 860
because these sales do not meet the definition of a “participating interest,” as defined in the guidance, in order for sale treatment to be allowed. Participations or other partial loan sales which do not meet the definition of a participating interest or which are not eligible for sale accounting remain as an investment on the consolidated balance sheet as required under GAAP and the proceeds are recorded as a secured borrowing. Secured borrowings are carried at fair value.
 
 Leases

The Company is obligated under a number of operating leases pursuant to which it is leasing office facilities from third parties with remaining terms ranging from approximately one to four years. Such operating leases are included in operating lease right-of-use (“ROU”) assets and operating lease liabilities in the accompanying consolidated balance sheets. The Company does not have any finance leases.

The ROU asset represents the Company’s right to use an underlying asset for the lease term and the operating lease liability represents the Company’s obligation to make lease payments arising from such lease. Operating lease ROU assets and liabilities are recognized at the commencement date based on the present value of lease payments over the remaining lease term. The Company’s leases do not provide an implicit discount rate, and as such the Company uses its weighted average borrowing rate based on the information available at the commencement date in determining the present value of the remaining lease payments. Lease expense is recognized on a straight-line basis over the remaining lease term. The Company has elected as a practical expedient to treat non-lease components as part of the lease as these components are not significant when compared to the lease component.

Income Taxes
 
The Company has elected to be treated as a RIC under the Code and operates in a manner so as to qualify for the tax treatment applicable to RICs. To qualify as a RIC, the Company must, among other requirements, meet certain source-of- income and asset diversification requirements and timely distribute to its stockholders at least 90% of its investment company taxable income, as defined by the Code, for each year. The Company has made and intends to continue to make the requisite distributions to its stockholders, which will generally relieve the Company from U.S. federal corporate-level income taxes.
 
Depending on the level of taxable income earned in a tax year, the Company may choose to carry forward taxable income in excess of current year dividend distributions from such current year taxable income into the next tax year and pay a 4% excise tax on such income, as required. To the extent that the Company determines that its estimated current year taxable income will be in excess of estimated dividend distributions for the current year from such income, the Company accrues excise tax, if any, on estimated excess taxable income as such taxable income is earned.
 
The Company may hold certain portfolio company investments through consolidated taxable subsidiaries. Such subsidiaries may be subject to U.S. federal and state corporate-level income taxes. These consolidated subsidiaries recognize deferred tax assets and liabilities for the estimated future tax effects attributable to temporary differences between the tax basis of certain assets and liabilities and the reported amounts included in the accompanying consolidated balance sheet using the applicable statutory tax rates in effect for the year in which any such temporary differences are expected to reverse.    
 
Dividends to Common Stockholders
 
Dividends and distributions to common stockholders are recorded on the ex-dividend date. The amount to be paid out as a dividend is determined by the Company’s board of directors each quarter and is generally based upon the earnings estimated by management and considers the level of undistributed taxable income carried forward from the prior year for distribution in the current year. Net realized capital gains, if any, are generally distributed, although the Company may decide to retain such capital gains for investment.
 
The Company has adopted a dividend reinvestment plan that provides for reinvestment of any distributions the Company declares in cash on behalf of its stockholders, unless a stockholder elects to receive cash. As a result, if the Company’s board of directors authorizes, and the Company declares, a cash dividend, then the Company’s stockholders who have not “opted out” of the Company’s dividend reinvestment plan will have their cash dividends automatically reinvested in additional shares of the Company’s common stock, rather than receiving the cash dividend. The Company may use newly issued shares to implement the dividend reinvestment plan or, if the Company is otherwise permitted under applicable law to purchase such shares, the Company may purchase shares in the open market in connection with the Company’s obligations under the dividend reinvestment plan.
 
Use of Estimates in the Preparation of Consolidated Financial Statements
 
The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of actual and contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of income or loss and expenses during the reporting period. Actual results could differ from those estimates. Significant estimates include the valuation of investments.

Recent Accounting Pronouncements

The Company considers the applicability and impact of all accounting standard updates (“ASU”) issued by the Financial Accounting Standards Board. The Company has assessed currently issued ASUs and has determined that they are not applicable or expected to have minimal impact on its consolidated financial statements.
v3.23.2
AGREEMENTS
 6 Months Ended
Jun. 30, 2023
Investment Company [Abstract]  
AGREEMENTS
3. AGREEMENTS

Investment Advisory and Management Agreement
 
The Company is party to an investment advisory and management agreement (the “investment advisory and management agreement”), with its investment adviser, Ares Capital Management. Subject to the overall supervision of the Company’s board of directors and in accordance with the Investment Company Act, Ares Capital Management provides investment advisory and management services to the Company. For providing these services, Ares Capital Management receives fees from the Company consisting of a base management fee, a fee based on the Company’s net investment income (“income based fee”) and a fee based on the Company’s net capital gains (“capital gains incentive fee”). The investment advisory and management agreement may be terminated by either party without penalty upon 60 days’ written notice to the other party.
 
Effective June 21, 2019, in connection with the Company’s board of directors’ approval of the modification of the asset coverage requirement applicable to senior securities from 200% to 150%, the investment advisory and management agreement was amended to reduce the Company’s annual base management fee rate from 1.5% to 1.0% on all assets financed using leverage over 1.0x debt to equity. For all assets financed using leverage up to 1.0x debt to equity, the annual base management fee rate remains at 1.5%. The base management fee is based on the average value of the Company’s total assets (other than cash or cash equivalents but including assets purchased with borrowed funds) at the end of the two most recently completed calendar quarters and is calculated by applying the applicable fee rate. The base management fee is payable quarterly in arrears. See Note 5 for additional information.
 
The income based fee is calculated and payable quarterly in arrears based on the Company’s pre-incentive fee net investment income, as defined in the investment advisory and management agreement, for the quarter. Pre-incentive fee net investment income means interest income, dividend income and any other income (including any other fees such as commitment, origination, structuring, diligence and consulting fees or other fees that the Company receives from portfolio companies but excluding fees for providing managerial assistance) accrued during the calendar quarter, minus operating expenses for the quarter (including the base management fee, any expenses payable under the administration agreement, and any interest expense and dividends paid on any outstanding preferred stock, but excluding the income based fee and capital gains incentive fee accrued under GAAP). Pre-incentive fee net investment income includes, in the case of investments with a deferred income feature (such as market discount, debt instruments with PIK interest, preferred stock with PIK dividends and zero coupon securities), accrued income that the Company has not yet received in cash. The Company’s investment adviser is not under any obligation to reimburse the Company for any part of the income based fees it received that was based on accrued income that the Company never actually received.
 
Pre-incentive fee net investment income does not include any realized capital gains, realized capital losses, unrealized capital appreciation, unrealized capital depreciation or income tax expense related to realized gains and losses. Because of the structure of the income based fee, it is possible that the Company may pay such fees in a quarter where the Company incurs a loss. For example, if the Company earns pre-incentive fee net investment income in excess of the hurdle rate (as defined below) for a quarter, the Company will pay the applicable income based fee even if the Company has incurred a loss in that quarter due to realized and/or unrealized capital losses.
 
Pre-incentive fee net investment income, expressed as a rate of return on the value of the Company’s net assets (defined as total assets less indebtedness and before taking into account any income based fees and capital gains incentive fees payable during the period) at the end of the immediately preceding calendar quarter, is compared to a fixed “hurdle rate” of 1.75% per quarter. If market credit spreads rise, the Company may be able to invest its funds in debt instruments that provide
for a higher return, which may increase the Company’s pre-incentive fee net investment income and make it easier for the Company’s investment adviser to surpass the fixed hurdle rate and receive an income based fee based on such net investment income. To the extent the Company has retained pre-incentive fee net investment income that has been used to calculate the income based fee, it is also included in the amount of the Company’s total assets (other than cash and cash equivalents but including assets purchased with borrowed funds) used to calculate the base management fee.

The Company pays its investment adviser an income based fee with respect to the Company’s pre-incentive fee net investment income in each calendar quarter as follows:
 
•No income based fee in any calendar quarter in which the Company’s pre-incentive fee net investment income does not exceed the hurdle rate;

•100% of the Company’s pre-incentive fee net investment income with respect to that portion of such pre-incentive fee net investment income, if any, that exceeds the hurdle rate but is less than 2.1875% in any calendar quarter. The Company refers to this portion of its pre-incentive fee net investment income (which exceeds the hurdle rate but is less than 2.1875%) as the “catch-up” provision. The “catch-up” is meant to provide the Company’s investment adviser with 20% of the pre-incentive fee net investment income as if a hurdle rate did not apply if this net investment income exceeded 2.1875% in any calendar quarter; and

•20% of the amount of the Company’s pre-incentive fee net investment income, if any, that exceeds 2.1875% in any calendar quarter.
 
These calculations are adjusted for any share issuances or repurchases during the quarter.

The capital gains incentive fee is determined and payable in arrears as of the end of each calendar year (or, upon termination of the investment advisory and management agreement, as of the termination date) and is calculated at the end of each applicable year by subtracting (a) the sum of the Company’s cumulative aggregate realized capital losses and aggregate unrealized capital depreciation from (b) the Company’s cumulative aggregate realized capital gains, in each case calculated from October 8, 2004 (the date the Company completed its initial public offering). Realized capital gains and losses include gains and losses on investments and foreign currencies, gains and losses on extinguishment of debt and from other assets, as well as any income tax and other expenses related to cumulative aggregate realized gains and losses. If such amount is positive at the end of such year, then the capital gains incentive fee for such year is equal to 20% of such amount, less the aggregate amount of capital gains incentive fees paid in all prior years. If such amount is negative, then there is no capital gains incentive fee for such year.
 
The cumulative aggregate realized capital gains are calculated as the sum of the differences, if positive, between (a) the net sales price of each investment in the Company’s portfolio when sold and (b) the accreted or amortized cost basis of such investment.
 
The cumulative aggregate realized capital losses are calculated as the sum of the amounts by which (a) the net sales price of each investment in the Company’s portfolio when sold is less than (b) the accreted or amortized cost basis of such investment.
 
The aggregate unrealized capital depreciation is calculated as the sum of the differences, if negative, between (a) the valuation of each investment in the Company’s portfolio as of the applicable capital gains incentive fee calculation date and (b) the accreted or amortized cost basis of such investment.
 
Notwithstanding the foregoing, if the Company is required by GAAP to record an investment at its fair value as of the time of acquisition instead of at the actual amount paid for such investment by the Company (including, for example, as a result of the application of the asset acquisition method of accounting), then solely for the purposes of calculating the capital gains incentive fee, the “accreted or amortized cost basis” of an investment shall be an amount (the “Contractual Cost Basis”) equal to (1) (x) the actual amount paid by the Company for such investment plus (y) any amounts recorded in the Company’s financial statements as required by GAAP that are attributable to the accretion of such investment plus (z) any other adjustments made to the cost basis included in the Company’s financial statements, including PIK interest or additional amounts funded (net of repayments) minus (2) any amounts recorded in the Company’s financial statements as required by GAAP that are attributable to the amortization of such investment, whether such calculated Contractual Cost Basis is higher or lower than the fair value of such investment (as determined in accordance with GAAP) at the time of acquisition.
  
The base management fees, income based fees and capital gains incentive fees for the three and six months ended June 30, 2023 and 2022 were as follows:

For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Base management fees$79 $75 $158 $148 
Income based fees$79 $57 $155 $108 
Capital gains incentive fees(1)$4 $(29)$(2)$(27)
________________________________________

(1)Calculated in accordance with GAAP as discussed below.

There was no capital gains incentive fee payable to the Company’s investment adviser as calculated under the investment advisory and management agreement for the three and six months ended June 30, 2023 and 2022. In addition, in accordance with GAAP, the Company had cumulatively accrued a capital gains incentive fee of $33 as of June 30, 2023. GAAP requires that the capital gains incentive fee accrual consider the cumulative aggregate unrealized capital appreciation in the calculation, as a capital gains incentive fee would be payable if such unrealized capital appreciation were realized, even though such unrealized capital appreciation is not permitted to be considered in calculating the fee actually payable under the investment advisory and management agreement. This GAAP accrual is calculated using the aggregate cumulative realized capital gains and losses and aggregate cumulative unrealized capital depreciation included in the calculation of the capital gains incentive fee plus the aggregate cumulative unrealized capital appreciation, net of any expense associated with cumulative unrealized capital depreciation or appreciation. If such amount is positive at the end of a period, then GAAP requires the Company to record a capital gains incentive fee equal to 20% of such cumulative amount, less the aggregate amount of actual capital gains incentive fees paid or capital gains incentive fees accrued under GAAP in all prior periods. As of June 30, 2023, the Company has paid capital gains incentive fees since inception totaling $133. The resulting accrual for any capital gains incentive fee under GAAP in a given period may result in an additional expense if such cumulative amount is greater than in the prior period or a reversal of previously recorded expense if such cumulative amount is less than in the prior period. If such cumulative amount is negative, then there is no accrual. There can be no assurance that such unrealized capital appreciation will be realized in the future.

Cash payment of any income based fees and capital gains incentive fees otherwise earned by the Company’s investment adviser is deferred if during the most recent four full calendar quarter period ending on or prior to the date such payment is to be made the sum of (a) the aggregate distributions to the Company’s stockholders and (b) the change in net assets (defined as total assets less indebtedness and before taking into account any income based fees and capital gains incentive fees payable during the period) is less than 7.0% of the Company’s net assets (defined as total assets less indebtedness) at the beginning of such period. These calculations will be adjusted for any share issuances or repurchases. Any income based fees and capital gains incentive fees deferred for payment are carried over for payment in subsequent calculation periods to the extent such fees are payable under the terms of the investment advisory and management agreement. Pursuant to the terms of the investment advisory and management agreement, payment of $81 of the income based fees earned by the Company’s investment adviser for the fourth quarter of 2022 had been previously deferred. The deferred income based fees were paid in the second quarter of 2023 pursuant to the terms of the investment advisory and management agreement.
 
The services of all investment professionals and staff of the Company’s investment adviser, when and to the extent engaged in providing investment advisory and management services to the Company, and routine overhead expenses of such personnel allocable to such services, are provided and paid for by the Company’s investment adviser. Under the investment advisory and management agreement, the Company bears all other costs and expenses of its operations and transactions, including, but not limited to, those relating to: organization; calculation of the Company’s net asset value (including, but not limited to, the cost and expenses of any independent third-party valuation firm); expenses incurred by the Company’s investment adviser payable to third parties, including agents, consultants or other advisers, in monitoring the Company’s financial and legal affairs and in monitoring the Company’s investments (including the cost of consultants hired to develop information technology systems designed to monitor the Company’s investments) and performing due diligence on the Company’s prospective portfolio companies; interest payable on indebtedness, if any, incurred to finance the Company’s investments (including payments to third party vendors for financial information services); offerings of the Company’s common stock and other securities; investment advisory and management fees; administration fees; fees payable to third parties, including agents, consultants or other advisers, relating to, or associated with, evaluating and making investments in portfolio companies, regardless of whether such transactions are ultimately consummated; transfer agent and custodial fees; registration fees; listing fees; taxes; independent directors’ fees and expenses; costs of preparing and filing reports or other
documents with the Securities and Exchange Commission (the “SEC”); the costs of any reports, proxy statements or other notices to stockholders, including printing costs; to the extent the Company is covered by any joint insurance policies, the Company’s allocable portion of the insurance premiums for such policies; direct costs and expenses of administration, including auditor and legal costs; and all other expenses incurred by the Company or its administrator in connection with administering the Company’s business as described in more detail under “Administration Agreement” below.

Administration Agreement
 
The Company is party to an administration agreement (the “administration agreement”) with its administrator, Ares Operations. Pursuant to the administration agreement, Ares Operations furnishes the Company with office equipment and clerical, bookkeeping and record keeping services at the Company’s office facilities. Under the administration agreement, Ares Operations also performs, or oversees the performance of, the Company’s required administrative services, which include, among other things, providing assistance in accounting, legal, compliance, operations, technology and investor relations, being responsible for the financial records that the Company is required to maintain and preparing reports to its stockholders and reports filed with the SEC. In addition, Ares Operations assists the Company in determining and publishing its net asset value, assists the Company in providing managerial assistance to its portfolio companies, oversees the preparation and filing of the Company’s tax returns and the printing and dissemination of reports to its stockholders, and generally oversees the payment of its expenses and the performance of administrative and professional services rendered to the Company by others. Payments under the administration agreement are equal to an amount based upon its allocable portion of Ares Operations’ overhead and other expenses (including travel expenses) incurred by Ares Operations in performing its obligations under the administration agreement, including the Company’s allocable portion of the compensation, rent and other expenses of certain of its officers (including the Company’s chief compliance officer, chief financial officer, chief accounting officer, general counsel, secretary, treasurer and assistant treasurer) and their respective staffs. The administration agreement may be terminated by either party without penalty upon 60 days’ written notice to the other party.
 
For the three and six months ended June 30, 2023, the Company incurred $3 and $6, respectively, in administrative and other fees, including certain costs that are reimbursable under the investment advisory and management agreement or administration agreement. For the three and six months ended June 30, 2022, the Company incurred $2 and $6, respectively, in administrative and other fees, including certain costs that are reimbursable under the investment advisory and management agreement or administration agreement. As of June 30, 2023 and December 31, 2022, $3 and $2, respectively, in administrative and other fees were unpaid and included in “accounts payable and other liabilities” in the accompanying consolidated balance sheet.
v3.23.2
INVESTMENTS
 6 Months Ended
Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]  
INVESTMENTS
4. INVESTMENTS

As of June 30, 2023 and December 31, 2022, investments consisted of the following:

 As of
 June 30, 2023December 31, 2022
Amortized Cost(1)Fair ValueAmortized Cost(1)Fair Value
First lien senior secured loans(2)$9,304 $8,972 $9,684 $9,373 
Second lien senior secured loans4,160 3,879 4,218 3,934 
Subordinated certificates of the SDLP(3)1,289 1,237 1,274 1,249 
Senior subordinated loans1,147 1,054 1,163 1,079 
Preferred equity2,161 2,140 2,095 2,027 
Ivy Hill Asset Management, L.P.(4)1,968 2,151 2,048 2,201 
Other equity1,657 2,063 1,561 1,917 
Total$21,686 $21,496 $22,043 $21,780 
________________________________________

(1)The amortized cost represents the original cost adjusted for any accretion of discounts, amortization of premiums and PIK interest or dividends.
    
(2)First lien senior secured loans include certain loans that the Company classifies as “unitranche” loans. The total amortized cost and fair value of the loans that the Company classified as “unitranche” loans were $4,875 and $4,746 respectively, as of June 30, 2023, and $4,983 and $4,841, respectively, as of December 31, 2022.
(3)The proceeds from these certificates were applied to co-investments with Varagon Capital Partners (“Varagon”) and its clients to fund first lien senior secured loans to 21 and 22 different borrowers as of June 30, 2023 and December 31, 2022, respectively.

(4)Includes the Company’s subordinated loan and equity investments in IHAM (as defined below), as applicable.
  
The Company uses GICS for classifying the industry groupings of its portfolio companies. The industrial and geographic compositions of the Company’s portfolio at fair value as of June 30, 2023 and December 31, 2022 were as follows:
 As of
June 30, 2023December 31, 2022
Industry
Software and Services22.0 %21.9 %
Financial Services(1)13.0 13.3 
Health Care Services11.3 10.8 
Commercial and Professional Services9.7 9.5 
Investment Funds and Vehicles(2)5.9 6.0 
Power Generation4.8 4.5 
Insurance Services4.8 5.2 
Consumer Services3.7 4.2 
Consumer Durables and Apparel3.7 3.7 
Capital Goods2.9 3.6 
Media and Entertainment2.4 2.1 
Food and Beverage2.1 2.0 
Retailing and Distribution2.1 2.2 
Energy2.0 2.0 
Automobiles and Components2.0 2.1 
Other7.6 6.9 
Total100.0 %100.0 %
________________________________________

(1)Includes the Company’s investment in IHAM.

(2)Includes the Company’s investment in the SDLP (as defined below), which had made first lien senior secured loans to 21 and 22 different borrowers as of June 30, 2023 and December 31, 2022, respectively. The portfolio companies in the SDLP are in industries similar to the companies in the Company’s portfolio.

 As of
June 30, 2023December 31, 2022
Geographic Region
West(1)24.9 %24.5 %
Midwest23.9 23.9 
Southeast18.3 17.1 
Northeast(2)14.3 14.0 
Mid-Atlantic13.8 14.9 
International4.8 5.6 
Total100.0 %100.0 %
________________________________________

(1)Includes the Company’s investment in the SDLP, which represented 5.8% and 5.7% of the total investment portfolio at fair value as of June 30, 2023 and December 31, 2022, respectively.
(2)Includes the Company’s investment in IHAM, which represented 10.0% and 10.1% of the total investment portfolio at fair value as of June 30, 2023 and December 31, 2022, respectively.

As of June 30, 2023 and December 31, 2022, loans on non-accrual status represented 2.1% of the total investments at amortized cost (or 1.1% at fair value) and 1.7% at amortized cost (or 1.1% at fair value), respectively.

Senior Direct Lending Program

The Company has established a joint venture with Varagon to make certain first lien senior secured loans, including certain stretch senior and unitranche loans, primarily to U.S. middle-market companies. Varagon was formed in 2013 as a lending platform by American International Group, Inc. and other partners. The joint venture is called the Senior Direct Lending Program, LLC (the “Senior Direct Lending Program” or the “SDLP”). In July 2016, the Company and Varagon and its clients completed the initial funding of the SDLP. The SDLP may generally commit and hold individual loans of up to $450. The Company and other accounts managed by the Company’s investment adviser and its affiliates may directly co-invest with the SDLP to accommodate larger transactions. The SDLP is capitalized as transactions are completed and all portfolio decisions and generally all other decisions in respect of the SDLP must be approved by an investment committee of the SDLP consisting of representatives of the Company and Varagon (with approval from a representative of each required).

The Company provides capital to the SDLP in the form of subordinated certificates (the “SDLP Certificates”), and Varagon and its clients provide capital to the SDLP in the form of senior notes, intermediate funding notes and SDLP Certificates. As of June 30, 2023 and December 31, 2022, the Company and a client of Varagon owned 87.5% and 12.5%, respectively, of the outstanding SDLP Certificates.

As of June 30, 2023 and December 31, 2022, the Company and Varagon and its clients had agreed to make capital available to the SDLP of $6,150 and $6,150, respectively, in the aggregate, of which $1,444 and $1,444, respectively, is to be made available from the Company. The Company will continue to provide capital to the SDLP in the form of SDLP Certificates, and Varagon and its clients will provide capital to the SDLP in the form of senior notes, intermediate funding notes and SDLP Certificates. This capital will only be committed to the SDLP upon approval of transactions by the investment committee of the SDLP as discussed above. Below is a summary of the funded capital and unfunded capital commitments of the SDLP.

 As of
June 30, 2023December 31, 2022
Total capital funded to the SDLP(1)$5,191 $5,127 
Total capital funded to the SDLP by the Company(1)$1,289 $1,274 
Total unfunded capital commitments to the SDLP(2)$280 $294 
Total unfunded capital commitments to the SDLP by the Company(2)$65 $68 
___________________________________________________________________________
(1)At principal amount.

(2)These commitments to fund delayed draw loans have been approved by the investment committee of the SDLP and will be funded if and when conditions to funding such delayed draw loans are met.

The SDLP Certificates pay a coupon equal to Secured Overnight Financing Rate (“SOFR”) plus 8.0% and also entitle the holders thereof to receive a portion of the excess cash flow from the loan portfolio, after expenses, which may result in a return to the holders of the SDLP Certificates that is greater than the stated coupon. The SDLP Certificates are junior in right of payment to the senior notes and intermediate funding notes.

The amortized cost and fair value of the SDLP Certificates held by the Company as of June 30, 2023 and December 31, 2022 were as follows:
As of
June 30, 2023December 31, 2022
Amortized CostFair ValueAmortized CostFair Value
SDLP Certificates$1,289 $1,237 $1,274 $1,249 
The Company’s yield on its investment in the SDLP Certificates at amortized cost and fair value as of June 30, 2023 and December 31, 2022 were as follows:
 As of
 June 30, 2023December 31, 2022
 Amortized CostFair ValueAmortized CostFair Value
Yield on the SDLP Certificates13.5 %14.1 %13.5 %13.8 %

The interest income from the Company’s investment in the SDLP Certificates and capital structuring service and other fees earned for the three and six months ended June 30, 2023 and 2022 were as follows:

For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Interest income
$43 $34 $86 $67 
Capital structuring service and other fees
$6 $3 $7 $8 

As of June 30, 2023 and December 31, 2022, the SDLP’s portfolio was comprised entirely of first lien senior secured loans to U.S. middle-market companies and were in industries similar to the companies in the Company’s portfolio. As of June 30, 2023 and December 31, 2022, one of the loans was on non-accrual status. Below is a summary of the SDLP’s portfolio.
As of
June 30, 2023December 31, 2022
Total first lien senior secured loans(1)(2)$5,113 $5,174 
Largest loan to a single borrower(1)$373 $377 
Total of five largest loans to borrowers(1)$1,654 $1,631 
Number of borrowers in the SDLP21 22 
Commitments to fund delayed draw loans(3)$280 $294 
___________________________________________________________________________

(1)At principal amount.

(2)First lien senior secured loans include certain loans that the SDLP classifies as “unitranche” loans. As of June 30, 2023 and December 31, 2022, the total principal amount of loans in the SDLP portfolio that the SDLP classified as “unitranche” loans was $4,065 and $4,108, respectively.

(3)As discussed above, these commitments have been approved by the investment committee of the SDLP.

Pursuant to Rule 4-08(g) of Regulation S-X, selected financial information of the SDLP, in conformity with GAAP, as of June 30, 2023 and December 31, 2022 and for the three and six months ended June 30, 2023 and 2022 are presented below:

As of
June 30, 2023December 31, 2022
Selected Balance Sheet Information:
Investments at fair value (amortized cost of $5,096 and $5,166, respectively)
$4,799 $4,958 
Other assets329 150 
Total assets$5,128 $5,108 
Senior notes$3,584 $3,538 
Intermediate funding notes134 132 
Other liabilities129 110 
Total liabilities3,847 3,780 
Subordinated certificates and members’ capital1,281 1,328 
Total liabilities and members’ capital$5,128 $5,108 
For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Selected Statement of Operations Information:
Total investment income$140 $77 $276 $149 
Interest expense72 30 141 54 
Other expenses6 4 12 9 
Total expenses78 34 153 63 
Net investment income62 43 123 86 
Net realized and unrealized losses on investments(17)(12)(85)(15)
Net increase in members’ capital resulting from operations$45 $31 $38 $71 

Ivy Hill Asset Management, L.P.

Ivy Hill Asset Management, L.P. (“IHAM”), a wholly owned portfolio company of the Company, is an asset management services company and an SEC-registered investment adviser. As of June 30, 2023, IHAM had assets under management of approximately $13.5 billion. As of June 30, 2023, IHAM managed 22 vehicles and served as the sub-manager/sub-servicer for one other vehicle (these vehicles managed or sub-managed/sub-serviced by IHAM are referred to as the “IHAM Vehicles”). IHAM earns fee income from managing the IHAM Vehicles and has also invested in certain of these vehicles as part of its business strategy. The amortized cost of IHAM’s total investments as of June 30, 2023 and December 31, 2022 was $2,436 and $2,370, respectively. For the three and six months ended June 30, 2023, IHAM had management and incentive fee income of $13 and $27, respectively, and investment-related income of $95 and $156, respectively, which included net realized gains or losses on investments and other transactions. For the three and six months ended June 30, 2022, IHAM had management and incentive fee income of $12 and $21, respectively, and investment-related income of $44 and $79, respectively, which included net realized gains or losses on investments and other transactions.

 The amortized cost and fair value of the Company’s investment in IHAM as of June 30, 2023 and December 31, 2022 were as follows:
As of
June 30, 2023December 31, 2022
Amortized CostFair ValueAmortized CostFair Value
Subordinated loan
$267 $267 $500 $500 
Equity
1,701 1,884 1,548 1,701 
Total investment in IHAM$1,968 $2,151 $2,048 $2,201 

The interest income and dividend income that the Company earned from IHAM for the three and six months ended June 30, 2023 and 2022 were as follows:

For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Interest income
$10 $3 $23 $3 
Dividend income
$60 $52 $117 $95 

From time to time, IHAM or certain IHAM Vehicles may purchase investments from, or sell investments to, the Company. For any such sales or purchases by the IHAM Vehicles to or from the Company, the IHAM Vehicle must obtain approval from third parties unaffiliated with the Company or IHAM, as applicable. During the six months ended June 30, 2023 and 2022, IHAM or certain of the IHAM Vehicles purchased $691 and $1,555, respectively, of loans from the Company. For the six months ended June 30, 2023 and 2022, the Company recognized $11 and $7, respectively, of net realized losses from these sales. During the six months ended June 30, 2023, the Company purchased $7 of investments from certain IHAM Vehicles. During the six months ended June 30, 2022, the Company purchased $27 of investments from certain IHAM Vehicles.
The yields at amortized cost and fair value of the Company’s investments in IHAM as of June 30, 2023 and December 31, 2022 were as follows:
 As of
 June 30, 2023December 31, 2022
 Amortized CostFair ValueAmortized CostFair Value
Subordinated loan
11.6 %11.6 %11.0 %11.0 %
Equity(1)
14.1 %12.7 %14.2 %12.9 %
_______________________________________________________________________________

(1)Represents the yield on the Company’s equity investment in IHAM, which is computed as (a) the annualized amount of the dividend received by the Company related to the Company’s equity investment in IHAM during the most recent quarter end, divided by (b) the amortized cost or fair value of the Company’s equity investment in IHAM, as applicable.

IHAM is party to an administration agreement, referred to herein as the “IHAM administration agreement,” with Ares Operations. Pursuant to the IHAM administration agreement, Ares Operations provides IHAM with, among other things, office facilities, equipment, clerical, bookkeeping and record keeping services, services relating to the marketing and sale of interests in vehicles managed by IHAM, services of, and oversight of, custodians, depositories, accountants, attorneys, underwriters and such other persons in any other capacity deemed to be necessary. Under the IHAM administration agreement, IHAM reimburses Ares Operations for all of the actual costs associated with such services, including Ares Operations’ allocable portion of the compensation, rent and other expenses of its officers, employees and respective staff in performing its obligations under the IHAM administration agreement.

Selected Financial Information

Pursuant to Rule 4-08(g) of Regulation S-X, selected financial information of IHAM, in conformity with GAAP, as of June 30, 2023 and December 31, 2022 and for the three and six months ended June 30, 2023 and 2022 are presented below.

In conformity with GAAP, IHAM is required to consolidate entities in which IHAM has a direct or indirect controlling financial interest based on either a variable interest model or voting interest model, which include certain of the IHAM Vehicles (the “Consolidated IHAM Vehicles”). As such, for GAAP purposes only, IHAM consolidates (a) entities in which it holds a majority voting interest or has majority ownership and control over the operational, financial and investing decisions of that entity and (b) entities that it concludes are variable interest entities in which IHAM has more than insignificant economic interest and power to direct the activities that most significantly impact the entities, and for which IHAM is deemed to be the primary beneficiary.

When IHAM consolidates an IHAM Vehicle for GAAP purposes only, IHAM reflects the assets, liabilities, revenues and expenses of the Consolidated IHAM Vehicles on a gross basis, including the economic interests held by third-party investors in the Consolidated IHAM Vehicles as debt obligations, subordinated notes or non-controlling interests, in the consolidated IHAM financials below. All of the revenues earned by IHAM as the investment manager of the IHAM Consolidated Vehicles are eliminated in GAAP consolidation. However, because the eliminated amounts are earned from and funded by third-party investors, the GAAP consolidation of an IHAM Vehicle does not impact the net income or loss attributable to IHAM. As a result, the Company believes an assessment of IHAM's business and the impact to the Company’s investment in IHAM is best viewed on a stand-alone basis as reflected in the first column in the tables below.
As of June 30, 2023
IHAMConsolidated IHAM Vehicles(1)EliminationsConsolidated
Selected Balance Sheet Information:
Assets
Investments at fair value(2)$2,427 $9,452 $(2,403)$9,476 
Cash and cash equivalents6 560 — 566 
Other assets70 94 (66)98 
Total assets$2,503 $10,106 $(2,469)$10,140 
Liabilities
Debt$452 $7,160 $— $7,612 
Subordinated note from ARCC267 — — 267 
Subordinated notes(3)— 1,295 (1,014)281 
Other liabilities16 334 (15)335 
Total liabilities735 8,789 (1,029)8,495 
Equity
Contributed capital1,700 — — 1,700 
Accumulated earnings84 — — 84 
Net unrealized losses on investments and foreign currency transactions(16)— — (16)
Non-controlling interests in Consolidated IHAM Vehicles(4)
— 1,317 (1,440)(123)
Total equity1,768 1,317 (1,440)1,645 
Total liabilities and equity$2,503 $10,106 $(2,469)$10,140 

As of December 31, 2022
IHAMConsolidated IHAM Vehicles(1)EliminationsConsolidated
Selected Balance Sheet Information:
Assets
Investments at fair value(2)$2,340 $8,973 $(2,315)$8,998 
Cash and cash equivalents5 499 — 504 
Other assets56 94 (51)99 
Total assets$2,401 $9,566 $(2,366)$9,601 
Liabilities
Debt$308 $6,968 $— $7,276 
Subordinated note from ARCC500 — — 500 
Subordinated notes(3)— 1,374 (1,093)281 
Other liabilities18 129 (15)132 
Total liabilities826 8,471 (1,108)8,189 
Equity
Contributed capital1,547 — — 1,547 
Accumulated earnings61 — — 61 
Net unrealized losses on investments and foreign currency transactions(33)— — (33)
Non-controlling interests in Consolidated IHAM Vehicles(4)
— 1,095 (1,258)(163)
Total equity1,575 1,095 (1,258)1,412 
Total liabilities and equity$2,401 $9,566 $(2,366)$9,601 
________________________________________
(1)Consolidated for GAAP purposes only.

(2)The determination of such fair value is determined in accordance with IHAM’s valuation procedures (separate and apart from the Company’s valuation process described elsewhere herein). The amortized cost of IHAM’s total investments as of June 30, 2023 and December 31, 2022 was $2,436 and $2,370, respectively. The amortized cost of the total investments of IHAM on a consolidated basis as of June 30, 2023 and December 31, 2022 was $9,730 and $9,306, respectively.

(3)Subordinated notes generally represent the most junior capital in certain of the Consolidated IHAM Vehicles and effectively represent equity in such vehicles.

(4)Non-controlling interests in Consolidated IHAM Vehicles includes net unrealized depreciation in the Consolidated IHAM Vehicles of $278 and $309 as of June 30, 2023 and December 31, 2022, respectively.


For the Three Months Ended June 30, 2023
IHAMConsolidated IHAM Vehicles(1)EliminationsConsolidated
Selected Statement of Operations Information:
Revenues
Investment income$95 $273 $(94)$274 
Management fees and other income13 2 (13)2 
Total revenues108 275 (107)276 
Expenses
Interest expense16 143 — 159 
Distributions to subordinated notes— 57 (46)11 
Management fees and other expenses4 18 (13)9 
Total expenses20 218 (59)179 
Net operating income88 57 (48)97 
Net realized gains on investments and other transactions— 7 — 7 
Net unrealized gains on investments and other transactions3 8 (6)5 
Total net realized and unrealized gains on investments and other transactions3 15 (6)12 
Net income91 72 (54)109 
Less: Net income attributable to non-controlling interests in Consolidated IHAM Vehicles— 72 (54)18 
Net income attributable to Ivy Hill Asset Management, L.P.$91 $— $— $91 
For the Six Months Ended June 30, 2023
IHAMConsolidated IHAM Vehicles(1)EliminationsConsolidated
Selected Statement of Operations Information:
Revenues
Investment income$166 $528 $(164)$530 
Management fees and other income27 3 (26)4 
Total revenues193 531 (190)534 
Expenses
Interest expense$35 $272 $— 307 
Distributions to subordinated notes— 89 (70)19 
Management fees and other expenses8 36 (26)18 
Total expenses43 397 (96)344 
Net operating income150 134 (94)190 
Net realized losses on investments and other transactions(10)(10)— (20)
Net unrealized gains on investments and other transactions17 30 (19)28 
Total net realized and unrealized gains on investments and other transactions7 20 (19)8 
Net income157 154 (113)198 
Less: Net income attributable to non-controlling interests in Consolidated IHAM Vehicles— 154 (113)41 
Net income attributable to Ivy Hill Asset Management, L.P.$157 $— $— $157 

For the Three Months Ended June 30, 2022
IHAMConsolidated IHAM Vehicles(1)EliminationsConsolidated
Selected Statement of Operations Information:
Revenues
Investment income$44 $120 $(43)$121 
Management fees and other income12 1 (11)2 
Total revenues56 121 (54)123 
Expenses
Interest expense5 46 — 51 
Distributions to subordinated notes— 45 (27)18 
Management fees and other expenses3 13 (11)5 
Total expenses8 104 (38)74 
Net operating income48 17 (16)49 
Net realized gains on investments and other transactions— 1 — 1 
Net unrealized losses on investments and other transactions(13)(118)13 (118)
Total net realized and unrealized losses on investments and other transactions(13)(117)13 (117)
Net income (loss)35 (100)(3)(68)
Less: Net loss attributable to non-controlling interests in Consolidated IHAM Vehicles— (100)(3)(103)
Net income attributable to Ivy Hill Asset Management, L.P.$35 $— $— $35 
For the Six Months Ended June 30, 2022
IHAMConsolidated IHAM Vehicles(1)EliminationsConsolidated
Selected Statement of Operations Information:
Revenues
Investment income$78 $217 $(75)$220 
Management fees and other income21 2 (20)3 
Total revenues99 219 (95)223 
Expenses
Interest expense6 78 — 84 
Distributions to subordinated notes— 74 (50)24 
Management fees and other expenses7 25 (20)12 
Total expenses13 177 (70)120 
Net operating income86 42 (25)103 
Net realized gains on investments and other transactions1 1 — 2 
Net unrealized losses on investments and other transactions(24)(152)23 (153)
Total net realized and unrealized losses on investments and other transactions(23)(151)23 (151)
Net income (losses)63 (109)(2)(48)
Less: Net loss attributable to non-controlling interests in Consolidated IHAM Vehicles— (109)(2)(111)
Net income attributable to Ivy Hill Asset Management, L.P.$63 $— $— $63 
____________________________________

(1)Consolidated for GAAP purposes only.
v3.23.2
DEBT
 6 Months Ended
Jun. 30, 2023
Debt Disclosure [Abstract]  
DEBT
5. DEBT

In accordance with the Investment Company Act, the Company is allowed to borrow amounts such that its asset coverage, calculated pursuant to the Investment Company Act, is at least 150% after such borrowing. The Company’s asset coverage requirement applicable to senior securities was reduced from 200% to 150% effective June 21, 2019. As of June 30, 2023, the aggregate principal amount outstanding of the senior securities issued by the Company was $11,401 and the Company’s asset coverage was 190%.
The Company’s outstanding debt as of June 30, 2023 and December 31, 2022 was as follows:

 As of 
 June 30, 2023 December 31, 2022 
Total Aggregate Principal Amount Committed/ Outstanding (1)Principal Amount OutstandingCarrying ValueTotal Aggregate Principal Amount Committed/ Outstanding (1)Principal Amount OutstandingCarrying Value
Revolving Credit Facility$4,758 (2)$1,922 $1,922 $4,843 (2)$2,246 $2,246 
Revolving Funding Facility1,775 850 850 1,775 800 800 
SMBC Funding Facility800 (3)401 401 800 (3)451 451 
BNP Funding Facility790 475 475 300 245 245 
2024 Convertible Notes403 403 401 (4)403 403 399 (4)
2023 Notes— — — 750 750 750 (4)
2024 Notes900 900 899 (4)900 900 898 (4)
March 2025 Notes600 600 598 (4)600 600 597 (4)
July 2025 Notes1,250 1,250 1,256 (4)1,250 1,250 1,258 (4)
January 2026 Notes1,150 1,150 1,145 (4)1,150 1,150 1,144 (4)
July 2026 Notes1,000 1,000 992 (4)1,000 1,000 991 (4)
2027 Notes500 500 495 (4)500 500 494 (4)
2028 Notes1,250 1,250 1,247 (4)1,250 1,250 1,247 (4)
2031 Notes700 700 690 (4)700 700 690 (4)
Total$15,876 $11,401 $11,371 $16,221 $12,245 $12,210 

________________________________________

(1)Represents the total aggregate amount committed or outstanding, as applicable, under such instrument. Borrowings under the committed Revolving Credit Facility, Revolving Funding Facility, SMBC Funding Facility and BNP Funding Facility (each as defined below) are subject to borrowing base and other restrictions.

(2)Provides for a feature that allows the Company, under certain circumstances, to increase the size of the Revolving Credit Facility (as defined below) to a maximum of $7,137 and $7,265, as of June 30, 2023 and December 31, 2022, respectively.

(3)Provides for a feature that allows ACJB (as defined below), under certain circumstances, to increase the size of the SMBC Funding Facility (as defined below) to a maximum of $1,000.

(4)Represents the aggregate principal amount outstanding, less unamortized debt issuance costs and the net unaccreted/amortized discount or premium recorded upon issuance. In February 2023, the Company repaid in full the 2023 Notes (as defined below) upon their maturity.

 The weighted average stated interest rate and weighted average maturity, both on aggregate principal amount outstanding, of all the Company’s outstanding debt as of June 30, 2023 were 4.6% and 3.5 years, respectively, and as of December 31, 2022 were 4.2% and 3.6 years, respectively.
 
Revolving Credit Facility
 
The Company is party to a senior secured revolving credit facility (as amended and restated, the “Revolving Credit Facility”), that allows the Company to borrow up to $4,758 at any one time outstanding. The Revolving Credit Facility consists of a $1,102 term loan tranche and a $3,656 revolving tranche. For $908 of the term loan tranche, the stated maturity date is April 19, 2028. For $116 of the term loan tranche, the stated maturity date is March 31, 2027. For $28 of the term loan tranche, the stated maturity date is March 31, 2026. For the remaining $50 of the term loan tranche, the stated maturity date is March 30, 2025. For $2,905 of the revolving tranche, the end of the revolving period and the stated maturity date are April 19, 2027 and April 19, 2028, respectively. For $494 of the revolving tranche, the end of the revolving period and the stated maturity date are March 31, 2026 and March 31, 2027, respectively. For $107 of the revolving tranche, the end of the revolving period and the stated maturity date are March 31, 2025 and March 31, 2026, respectively. For the remaining $150 of the revolving tranche, the end of the revolving period and the stated maturity date are March 30, 2024 and March 30, 2025, respectively. The Revolving Credit Facility also provides for a feature that allows the Company, under certain circumstances, to increase the overall size of the Revolving Credit Facility to a maximum of $7,137. The Revolving Credit Facility generally requires payments of interest at the end of each SOFR interest period, but no less frequently than quarterly, on SOFR based loans, and monthly payments of interest on other loans. Subsequent to the end of the respective revolving periods and prior to the respective stated maturity dates, the Company is required to repay the relevant outstanding principal amounts under both the term loan tranche and revolving tranche on a monthly basis in an amount equal to 1/12th of the outstanding principal amount at the end of the respective revolving periods.

Under the Revolving Credit Facility, the Company is required to comply with various covenants, reporting requirements and other customary requirements for similar revolving credit facilities, including, without limitation, covenants related to: (a) limitations on the incurrence of additional indebtedness and liens, (b) limitations on certain investments, (c) limitations on certain restricted payments, (d) maintaining a certain minimum stockholders’ equity, (e) maintaining a ratio of total assets (less total liabilities not representing indebtedness) to total indebtedness of the Company and its consolidated subsidiaries (subject to certain exceptions) of not less than 1.5:1.0, (f) limitations on pledging certain unencumbered assets, and (g) limitations on the creation or existence of agreements that prohibit liens on certain properties of the Company and certain of its subsidiaries. These covenants are subject to important limitations and exceptions that are described in the documents governing the Revolving Credit Facility. Amounts available to borrow under the Revolving Credit Facility (and the incurrence of certain other permitted debt) are also subject to compliance with a borrowing base that applies different advance rates to different types of assets (based on their value as determined pursuant to the Revolving Credit Facility) that are pledged as collateral. As of June 30, 2023, the Company was in compliance in all material respects with the terms of the Revolving Credit Facility.
 
As of June 30, 2023 and December 31, 2022, there was $1,922 and $2,246 outstanding, respectively, under the Revolving Credit Facility. The Revolving Credit Facility also provides for a sub-limit for the issuance of letters of credit for up to an aggregate amount of $250 with the ability to increase by an incremental $50 on an uncommitted basis. As of June 30, 2023 and December 31, 2022, the Company had $102 and $86, respectively, in letters of credit issued through the Revolving Credit Facility. The amount available for borrowing under the Revolving Credit Facility is reduced by any letters of credit issued. As of June 30, 2023, there was $2,734 available for borrowing (net of letters of credit issued) under the Revolving Credit Facility, subject to borrowing base restrictions.
 
Since March 31, 2022, the interest rate charged on the Revolving Credit Facility is based on SOFR plus a credit spread adjustment of 0.10% (or an alternate rate of interest for certain loans, commitments and/or other extensions of credit denominated in Sterling, Canadian Dollars, Euros and certain other foreign currencies plus a spread adjustment, if applicable) and an applicable spread of either 1.75% or 1.875% or an “alternate base rate” (as defined in the agreements governing the Revolving Credit Facility) plus an applicable spread of 0.75% or 0.875%, in each case, determined monthly based on the total amount of the borrowing base relative to the sum of (i) the greater of (a) the aggregate amount of revolving exposure and term loans outstanding under the Revolving Credit Facility and (b) 85% of the total commitments of the Revolving Credit Facility (or, if higher, the total revolving exposure) plus (ii) other debt, if any, secured by the same collateral as the Revolving Credit Facility. The Revolving Credit Facility allows for borrowings to be made using one, three or six month SOFR. Prior to March 31, 2022, the interest rate charged on the Revolving Credit Facility was based on London Interbank Offered Rate (“LIBOR”) (or an alternate rate of interest for certain loans, commitments and/or other extensions of credit denominated in Sterling, Canadian Dollars, Euros and certain other foreign currencies) plus an applicable spread of either 1.75% or 1.875% or an “alternate base rate” (as defined in the agreements governing the Revolving Credit Facility) plus an applicable spread of 0.75% or 0.875%, in each case, determined monthly based on the total amount of the borrowing base relative to the sum of (i) the greater of (a) the aggregate amount of revolving exposure and term loans outstanding under the Revolving Credit Facility and (b) 85% of the total commitments of the Revolving Credit Facility (or, if higher, the total revolving exposure) plus (ii) other debt, if any, secured by the same collateral as the Revolving Credit Facility. As of June 30, 2023, the one, three and six month
SOFR was 5.14%, 5.27% and 5.39%, respectively. As of June 30, 2023, the applicable spread in effect was 1.75%. In addition to the stated interest expense on the Revolving Credit Facility, the Company is required to pay a commitment fee of 0.375% per annum on any unused portion of the Revolving Credit Facility. The Company is also required to pay a letter of credit fee of either 2.00% or 2.125% per annum on letters of credit issued, determined monthly based on the total amount of the borrowing base relative to the total commitments of the Revolving Credit Facility and other debt, if any, secured by the same collateral as the Revolving Credit Facility.

The Revolving Credit Facility is secured by certain assets in the Company’s portfolio and excludes investments held by Ares Capital CP under the Revolving Funding Facility, those held by ACJB under the SMBC Funding Facility and those held by AFB under the BNP Funding Facility, each as described below, and certain other investments.

For the three and six months ended June 30, 2023 and 2022, the components of interest and credit facility fees expense, cash paid for interest expense, average stated interest rates (i.e., rate in effect plus the spread) and average outstanding balances for the Revolving Credit Facility were as follows:

 For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Stated interest expense$34 $9 $68 $14 
Credit facility fees3 3 6 4 
Amortization of debt issuance costs2 2 4 4 
Total interest and credit facility fees expense$39 $14 $78 $22 
Cash paid for interest expense$43 $7 $75 $16 
Average stated interest rate6.84 %2.65 %6.37 %2.52 %
Average outstanding balance$1,995 $1,242 $2,114 $1,161 
 
Letter of Credit Facility

In May 2023, the Company and Deutsche Bank AG New York Branch (the “Issuer”) entered into an uncommitted continuing agreement (the “Letter of Credit Facility”), which allows the Issuer to issue letters of credit or demand guarantees, at the request of the Company, on behalf of certain portfolio companies. The Company is required to make payments to the Issuer if the portfolio companies were to default on their related payment obligations. The Letter of Credit Facility is secured on a pari passu basis with the Revolving Credit Facility and pursuant to substantially the same collateral as the Revolving Credit Facility. As of June 30, 2023, the Issuer had $3 in letters of credit issued under the Letter of Credit Facility.

Revolving Funding Facility
 
The Company and the Company’s consolidated subsidiary, Ares Capital CP Funding LLC (“Ares Capital CP”), are party to a revolving funding facility (as amended, the “Revolving Funding Facility”), that allows Ares Capital CP to borrow up to $1,775 at any one time outstanding. The Revolving Funding Facility is secured by all of the assets held by, and the membership interest in, Ares Capital CP. The end of the reinvestment period and the stated maturity date for the Revolving Funding Facility are December 29, 2024 and December 29, 2026, respectively.
 
Amounts available to borrow under the Revolving Funding Facility are subject to a borrowing base that applies different advance rates to different types of assets held by Ares Capital CP. Ares Capital CP is also subject to limitations with respect to the loans securing the Revolving Funding Facility, including restrictions on sector concentrations, loan size, payment frequency and status, collateral interests and loans with fixed rates, as well as restrictions on portfolio company leverage, all of which may also affect the borrowing base and therefore amounts available to borrow. The Company and Ares Capital CP are also required to comply with various covenants, reporting requirements and other customary requirements for similar facilities. These covenants are subject to important limitations and exceptions that are described in the agreements governing the Revolving Funding Facility. As of June 30, 2023, the Company and Ares Capital CP were in compliance in all material respects with the terms of the Revolving Funding Facility.
 
As of June 30, 2023 and December 31, 2022, there was $850 and $800 outstanding, respectively, under the Revolving Funding Facility. Since June 30, 2022, the interest rate charged on the Revolving Funding Facility is based on SOFR plus a credit spread adjustment of 0.10% or a “base rate” (as defined in the agreements governing the Revolving Funding Facility) plus an applicable spread of 1.90% per annum. From December 29, 2021 to June 29, 2022, the interest rate charged on the
Revolving Funding Facility is based on one month LIBOR plus 1.90% per annum or a “base rate” (as defined in the agreements governing the Revolving Funding Facility) plus 1.00% per annum.
  
For the three and six months ended June 30, 2023 and 2022, the components of interest and credit facility fees expense, cash paid for interest expense, average stated interest rates (i.e., rate in effect plus the spread) and average outstanding balances for the Revolving Funding Facility were as follows:
 For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Stated interest expense$15 $5 $28 $9 
Credit facility fees2 1 3 2 
Amortization of debt issuance costs1 1 2 2 
Total interest and credit facility fees expense$18 $7 $33 $13 
Cash paid for interest expense$15 $7 $27 $10 
Average stated interest rate7.10 %2.82 %6.75 %2.40 %
Average outstanding balance$865 $703 $838 $734 

SMBC Funding Facility
 
The Company and the Company’s consolidated subsidiary, Ares Capital JB Funding LLC (“ACJB”), are party to a revolving funding facility (as amended, the “SMBC Funding Facility”), with ACJB, as the borrower, and Sumitomo Mitsui Banking Corporation, as the administrative agent and collateral agent, that allows ACJB to borrow up to $800 at any one time outstanding. The SMBC Funding Facility also provides for a feature that allows ACJB, subject to receiving certain consents, to increase the overall size of the SMBC Funding Facility to $1,000. The SMBC Funding Facility is secured by all of the assets held by ACJB. The end of the reinvestment period and the stated maturity date for the SMBC Funding Facility are May 28, 2024 and May 28, 2026, respectively. The reinvestment period and the stated maturity date are both subject to two one-year extensions by mutual agreement.
 
Amounts available to borrow under the SMBC Funding Facility are subject to a borrowing base that applies an advance rate to assets held by ACJB. ACJB is also subject to limitations with respect to the loans securing the SMBC Funding Facility, including restrictions on sector concentrations, loan size, payment frequency and status, collateral interests and loans with fixed rates, as well as restrictions on portfolio company leverage, all of which may also affect the borrowing base and therefore amounts available to borrow. The Company and ACJB are also required to comply with various covenants, reporting requirements and other customary requirements for similar facilities. These covenants are subject to important limitations and exceptions that are described in the documents governing the SMBC Funding Facility. As of June 30, 2023, the Company and ACJB were in compliance in all material respects with the terms of the SMBC Funding Facility.
 
As of June 30, 2023 and December 31, 2022, there was $401 and $451 outstanding, respectively, under the SMBC Funding Facility. Since April 28, 2023, the interest rate charged on the SMBC Funding Facility is based on an applicable spread of either (i) 1.75% or 2.00% over one month SOFR plus a credit spread adjustment of 0.10%, or (ii) 0.75% or 1.00% over a “base rate” (as defined in the agreements governing the SMBC Funding Facility), in each case, determined monthly based on the amount of the average borrowings outstanding under the SMBC Funding Facility. Prior to April 28, 2023, the interest rate charged on the SMBC Funding Facility was based on an applicable spread of either (i) 1.75% or 2.00% over one month LIBOR or (ii) 0.75% or 1.00% over a “base rate” (as defined in the agreements governing the SMBC Funding Facility), in each case, determined monthly based on the amount of the average borrowings outstanding under the SMBC Funding Facility. As of June 30, 2023, the applicable spread in effect was 1.75%. ACJB is required to pay a commitment fee of between 0.50% and 1.00% per annum depending on the size of the unused portion of the SMBC Funding Facility.
 
For the three and six months ended June 30, 2023 and 2022, the components of interest and credit facility fees expense, cash paid for interest expense, average stated interest rates (i.e., rate in effect plus the spread) and average outstanding balances for the SMBC Funding Facility were as follows:
 For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Stated interest expense$7 $2 $14 $5 
Credit facility fees— 1 1 1 
Amortization of debt issuance costs— 1 1 1 
Total interest and credit facility fees expense$7 $4 $16 $7 
Cash paid for interest expense$7 $3 $14 $5 
Average stated interest rate6.94 %2.47 %6.55 %2.37 %
Average outstanding balance$413 $401 $420 $403 
    
BNP Funding Facility
 
The Company and the Company’s consolidated subsidiary, ARCC FB Funding LLC (“AFB”), are party to a revolving funding facility (as amended, the “BNP Funding Facility”) with AFB, as the borrower, and BNP Paribas, as the administrative agent and lender, that allows AFB to borrow up to $790 at any one time outstanding. The BNP Funding Facility is secured by all of the assets held by AFB. The end of the reinvestment period and the stated maturity date for the BNP Funding Facility are April 20, 2026 and April 20, 2028, respectively. The reinvestment period and the stated maturity date are both subject to a one-year extension by mutual agreement.
 
Amounts available to borrow under the BNP Funding Facility are subject to a borrowing base that applies an advance rate to assets held by AFB. AFB is also subject to limitations with respect to the loans securing the BNP Funding Facility, including restrictions on sector concentrations, loan size, payment frequency and status, collateral interests and loans with fixed rates, as well as restrictions on portfolio company leverage, all of which may also affect the borrowing base and therefore amounts available to borrow. The Company and AFB are also required to comply with various covenants, reporting requirements and other customary requirements for similar facilities. These covenants are subject to important limitations and exceptions that are described in the documents governing the BNP Funding Facility. As of June 30, 2023, the Company and AFB were in compliance in all material respects with the terms of the BNP Funding Facility.
 
As of June 30, 2023 and December 31, 2022, there was $475 and $245, respectively, outstanding under the BNP Funding Facility. Since April 20, 2023, the interest rate charged on the BNP Funding Facility is based on an applicable SOFR or a “base rate” (as defined in the agreements governing the BNP Funding Facility) plus a margin of (i) 2.80% during the reinvestment period and (ii) 3.30% following the reinvestment period. From January 9, 2023 to April 19, 2023, the interest rate charged on the BNP Funding Facility was based on an applicable SOFR or a “base rate” plus a margin of (i) 2.30% during the reinvestment period and (ii) 2.80% following the reinvestment period. Prior to January 9, 2023, the interest rate charged on the BNP Funding Facility was based on three month LIBOR or a “base rate” (as defined in the agreements governing the BNP Funding Facility) plus a margin of (i) 1.80% during the reinvestment period and (ii) 2.30% following the reinvestment period. As of June 30, 2023, the applicable spread in effect was 2.80%. AFB is required to pay a commitment fee of between 0.00% and 1.25% per annum depending on the size of the unused portion of the BNP Funding Facility.

For the three and six months ended June 30, 2023 and 2022, the components of interest and credit facility fees expense, cash paid for interest expense, average stated interest rates (i.e., rate in effect plus the spread) and average outstanding balances for the BNP Funding Facility were as follows:

For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Stated interest expense$8 $1 $13 $1 
Credit facility fees— 1 1 1 
Amortization of debt issuance costs1 — 1 — 
Total interest and credit facility fees expense$9 $2 $15 $2 
Cash paid for interest expense$7 $— $12 $— 
Average stated interest rate7.90 %2.83 %7.48 %3.39 %
Average outstanding balance$402 $54 $353 $49 
Convertible Unsecured Notes
 
The Company has issued $403 in aggregate principal amount of unsecured convertible notes that mature on March 1, 2024 (the “2024 Convertible Notes”) unless previously converted or repurchased in accordance with its terms. The Company does not have the right to redeem the 2024 Convertible Notes prior to maturity. The 2024 Convertible Notes bear interest at a rate of 4.625% per annum, payable semi-annually.
 
In certain circumstances, assuming the conversion date below has not already passed, the 2024 Convertible Notes will be convertible into cash, shares of the Company’s common stock or a combination of cash and shares of its common stock, at the Company’s election, at the conversion rate (listed below as of June 30, 2023) subject to customary anti-dilution adjustments and the requirements of the indenture (the “2024 Convertible Notes Indenture”). Prior to the close of business on the business day immediately preceding the conversion date (listed below), holders may convert their 2024 Convertible Notes only under certain circumstances set forth in the 2024 Convertible Notes Indenture. On or after the conversion date until the close of business on the second scheduled trading day immediately preceding the maturity date for the 2024 Convertible Notes, holders may convert their 2024 Convertible Notes at any time. In addition, if the Company engages in certain corporate events as described in the 2024 Convertible Notes Indenture, holders of the 2024 Convertible Notes may require the Company to repurchase for cash all or part of the 2024 Convertible Notes at a repurchase price equal to 100% of the principal amount of the 2024 Convertible Notes to be repurchased, plus accrued and unpaid interest through, but excluding, the required repurchase date.
 
Certain key terms related to the convertible features for the 2024 Convertible Notes as of June 30, 2023 are listed below.
2024 Convertible Notes
Conversion premium15.0 %
Closing stock price at issuance$17.29 
Closing stock price dateMarch 5, 2019
Conversion price (1)$19.55 
Conversion rate (shares per one thousand dollar principal amount)(1)51.1436 
Conversion dateDecember 1, 2023
________________________________________

(1)Represents conversion price and conversion rate, as applicable, as of June 30, 2023, taking into account any applicable de minimis adjustments that will be made on the conversion date.
 
As of June 30, 2023, the principal amount of the 2024 Convertible Notes exceeded the value of the underlying shares multiplied by the per share closing price of the Company’s common stock.
 
The 2024 Convertible Notes Indenture contains certain covenants, including covenants requiring the Company to comply with Section 18(a)(1)(A) as modified by Section 61(a) of the Investment Company Act, or any successor provisions, and to provide financial information to the holders of the 2024 Convertible Notes under certain circumstances. These covenants are subject to important limitations and exceptions that are described in the 2024 Convertible Notes Indenture. As of June 30, 2023, the Company was in compliance in all material respects with the terms of the 2024 Convertible Notes Indenture.
 
The 2024 Convertible Notes as well as any other convertible notes outstanding during the periods presented (collectively referred to as the “Convertible Unsecured Notes”) are accounted for in accordance with ASC 470-20, Debt. Upon conversion of the 2024 Convertible Notes, the Company intends to pay the outstanding principal amount in cash and to the extent that the conversion value exceeds the principal amount, the Company has the option to pay in cash or shares of the Company’s common stock (or a combination of cash and shares) in respect of the excess amount, subject to the requirements of the 2024 Convertible Notes Indenture. The Company has determined that the embedded conversion options in the 2024 Convertible Notes are not required to be separately accounted for as a derivative under GAAP.
 
In connection with the issuance of the 2024 Convertible Notes, the Company incurred debt issuance costs of $4. The 2024 Convertible Notes were issued at a discount. The Company records interest expense comprised of both stated interest expense as well as accretion of any original issue discount or debt issuance costs.
As of June 30, 2023, the components of the carrying value of the 2024 Convertible Notes, the stated interest rate and the effective interest rate were as follows:
2024 Convertible Notes
Principal amount of debt$403 
Original issue discount, net of accretion1 
Debt issuance costs, net of amortization(3)
Carrying value of debt$401 
Stated interest rate4.625 %
Effective interest rate(1)5.10 %
________________________________________

(1)The effective interest rate of the 2024 Convertible Notes is equal to the stated interest rate plus the accretion of original issue discount and amortization of debt issuance costs.

For the three and six months ended June 30, 2023 and 2022, the components of interest expense and cash paid for interest expense for the 2024 Convertible Notes, as well as any other convertible notes outstanding during the periods presented were as follows.
 For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Stated interest expense$4 $5 $9 $11 
Accretion of original issue discount— — 1 1 
Total interest expense$4 $5 $10 $12 
Cash paid for interest expense$— $— $9 $17 

Unsecured Notes
 
The Company has issued certain unsecured notes (each issuance of which is referred to herein using the “defined term” set forth under the “Unsecured Notes” column of the table below and collectively referred to as the “Unsecured Notes”), that pay interest semi-annually and all principal amounts are due upon maturity. Each of the Unsecured Notes may be redeemed in whole or in part at any time at the Company’s option at a redemption price equal to par plus a “make whole” premium, if applicable, as determined pursuant to the indentures governing each of the Unsecured Notes, plus any accrued and unpaid interest. Certain key terms related to the features for the Unsecured Notes as of June 30, 2023 are listed below.


Unsecured Notes		Aggregate Principal Amount IssuedInterest RateOriginal Issuance DateMaturity Date
2024 Notes$900 4.200%June 10, 2019June 10, 2024
March 2025 Notes$600 4.250%January 11, 2018March 1, 2025
July 2025 Notes$1,250 3.250%January 15, 2020July 15, 2025
January 2026 Notes$1,150 3.875%July 15, 2020January 15, 2026
July 2026 Notes$1,000 2.150%January 13, 2021July 15, 2026
2027 Notes $500 2.875%January 13, 2022June 15, 2027
2028 Notes$1,250 2.875%June 10, 2021June 15, 2028
2031 Notes$700 3.200%November 4, 2021November 15, 2031

In February 2023, the Company repaid in full the $750 in aggregate principal amount outstanding of unsecured notes (the “2023 Notes”) upon their maturity. The 2023 Notes bore interest at a rate of 3.500% per annum, payable semi-annually.
For the three and six months ended June 30, 2023 and 2022, the components of interest expense and cash paid for interest expense for the Unsecured Notes, as well as any other unsecured notes outstanding during the periods presented are listed below.
 For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Stated interest expense$61 $67 $124 $134 
Amortization of debt issuance costs4 4 7 8 
Net amortization of original issue premium/discount(1)(2)(3)(4)
Total interest expense$64 $69 $128 $138 
Cash paid for interest expense$55 $55 $134 $134 
 
The Unsecured Notes contain certain covenants, including covenants requiring the Company to comply with Section 18(a)(1)(A) as modified by Section 61(a) of the Investment Company Act, or any successor provisions, and to provide financial information to the holders of such notes under certain circumstances. These covenants are subject to important limitations and exceptions set forth in the indentures governing such notes. As of June 30, 2023, the Company was in compliance in all material respects with the terms of the respective indentures governing each of the Unsecured Notes.
 
The 2024 Convertible Notes and the Unsecured Notes are the Company’s senior unsecured obligations and rank senior in right of payment to any future indebtedness that is expressly subordinated in right of payment to the 2024 Convertible Notes and the Unsecured Notes; equal in right of payment to the Company’s existing and future unsecured indebtedness that is not expressly subordinated; effectively junior in right of payment to any of its secured indebtedness (including existing unsecured indebtedness that the Company later secures) to the extent of the value of the assets securing such indebtedness; and structurally junior to all existing and future indebtedness (including trade payables) incurred by the Company’s subsidiaries, financing vehicles or similar facilities.
v3.23.2
DERIVATIVE INSTRUMENTS
 6 Months Ended
Jun. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
DERIVATIVE INSTRUMENTS
6. DERIVATIVE INSTRUMENTS

The Company enters into forward currency contracts from time to time to help mitigate the impact that an adverse change in foreign exchange rates would have on the value of the Company’s investments denominated in foreign currencies. As of June 30, 2023, the counterparties to these forward currency contracts were Canadian Imperial Bank of Commerce and Royal Bank of Canada. As of December 31, 2022, the counterparty to these forward currency contracts were Royal Bank of Canada.

Certain information related to the Company’s derivative instruments as of June 30, 2023 and December 31, 2022 is presented below.
    
 As of June 30, 2023
Derivative InstrumentNotional
Amount		Maturity DateGross Amount of Recognized AssetsGross Amount of Recognized LiabilitiesBalance Sheet
Location of Net Amounts
Foreign currency forward contract£166 7/28/2023$207 $(210)Accounts payable and other liabilities
Foreign currency forward contractCAD153 7/19/2023116 (116)Accounts payable and other liabilities
Foreign currency forward contract€132 7/28/2023146 (143)Other Assets
Foreign currency forward contractCAD87 7/28/202364 (65)Accounts payable and other liabilities
Foreign currency forward contractCAD65 7/28/202348 (49)Accounts payable and other liabilities
Foreign currency forward contractNZD59 7/28/202336 (36)Accounts payable and other liabilities
Foreign currency forward contractCAD41 7/17/202331 (31)Accounts payable and other liabilities
Foreign currency forward contractCAD36 7/10/202328 (28)Accounts payable and other liabilities
Foreign currency forward contract$33 7/28/202326 (26)Accounts payable and other liabilities
Total$702 $(704)

 As of December 31, 2022
Derivative InstrumentNotional
Amount		Maturity DateGross Amount of Recognized AssetsGross Amount of Recognized LiabilitiesBalance Sheet
Location of Net Amounts
Foreign currency forward contractCAD264 1/27/2023$195 $(196)Accounts payable and other liabilities
Foreign currency forward contractCAD242 1/18/2023178 (179)Accounts payable and other liabilities
Foreign currency forward contract€158 1/27/2023159 (169)Accounts payable and other liabilities
Foreign currency forward contract£125 1/27/2023145 (151)Accounts payable and other liabilities
Foreign currency forward contractNZD59 1/27/202334 (37)Accounts payable and other liabilities
Foreign currency forward contractCAD17 1/27/202312 (12)Accounts payable and other liabilities
Total$723 $(744)

Net realized gains (losses) on derivative instruments recognized by the Company for the three and six months ended June 30, 2023 and 2022 is in the following location in the consolidated statements of operations:

For the Three Months Ended June 30,For the Six Months Ended June 30,
Derivative InstrumentStatement Location2023202220232022
Foreign currency forward contractNet realized gains (losses) from foreign currency and other transactions$(3)$24 (32)$14 
Total$(3)$24 $(32)$14 

Net unrealized gains (losses) on derivative instruments recognized by the Company for the three and six months ended June 30, 2023 and 2022 is in the following location in the consolidated statements of operations:
For the Three Months Ended June 30,For the Six Months Ended June 30,
Derivative InstrumentStatement Location2023202220232022
Foreign currency forward contractNet unrealized gains (losses) from foreign currency and other transactions$(8)$7 $18 $21 
Total$(8)$7 $18 $21 
v3.23.2
COMMITMENTS AND CONTINGENCIES
 6 Months Ended
Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]  
COMMITMENTS AND CONTINGENCIES
7. COMMITMENTS AND CONTINGENCIES

Investment Commitments

The Company has various commitments to fund investments in its portfolio as described below. As of June 30, 2023 and December 31, 2022, the Company had the following commitments to fund various revolving and delayed draw senior secured and subordinated loans, including commitments to fund which are at (or substantially at) the Company’s discretion:
 As of
 June 30, 2023December 31, 2022
Total revolving and delayed draw loan commitments $2,449 $2,916 
Less: funded commitments(594)(526)
Total unfunded commitments1,855 2,390 
Less: commitments substantially at discretion of the Company— — 
Less: unavailable commitments due to borrowing base or other covenant restrictions(14)(13)
Total net adjusted unfunded revolving and delayed draw loan commitments$1,841 $2,377 
    
Included within the total revolving and delayed draw loan commitments as of June 30, 2023 and December 31, 2022 were delayed draw loan commitments totaling $793 and $1,229, respectively. The Company’s commitment to fund delayed draw loans is generally triggered upon the satisfaction of certain pre-negotiated terms and conditions. Generally, the most significant and uncertain term requires the borrower to satisfy a specific use of proceeds covenant. The use of proceeds covenant typically requires the borrower to use the additional loans for the specific purpose of a permitted acquisition or permitted investment, for example. In addition to the use of proceeds covenant, the borrower is generally required to satisfy additional negotiated covenants (including specified leverage levels).

Also included within the total revolving loan commitments as of June 30, 2023 were commitments to issue up to $359 in letters of credit through a financial intermediary on behalf of certain portfolio companies. As of June 30, 2023, the Company had $52 in letters of credit issued and outstanding under these commitments on behalf of the portfolio companies. For all these letters of credit issued and outstanding, the Company would be required to make payments to third parties if the portfolio companies were to default on their related payment obligations. Of these letters of credit, $37 expire in 2023, $14 expire in 2024 and $1 expire in 2025 and thereafter.
 
The Company also has commitments to co-invest in the SDLP for the Company’s portion of the SDLP’s commitments to fund delayed draw loans to certain portfolio companies of the SDLP. See Note 4 for more information.
 
As of June 30, 2023 and December 31, 2022, the Company was party to agreements to fund equity investment commitments as follows:
 As of
 June 30, 2023December 31, 2022
Total equity commitments$148 $120 
Less: funded equity commitments(64)(69)
Total unfunded equity commitments84 51 
Less: equity commitments substantially at discretion of the Company(51)(51)
Total net adjusted unfunded equity commitments$33 $— 
 
In the ordinary course of business, the Company may sell certain of its investments to third party purchasers. In particular, in connection with the sale of certain controlled portfolio company equity investments (as well as certain other sales) the Company has, and may continue to do so in the future, agreed to indemnify such purchasers for future liabilities arising
from the investments and the related sale transaction. Such indemnification provisions have given rise to liabilities in the past and may do so in the future.

In addition, in the ordinary course of business, the Company may guarantee certain obligations in connection with its portfolio companies (in particular, certain controlled portfolio companies). Under these guarantee arrangements, payments may be required to be made to third parties if such guarantees are called upon or if the portfolio companies were to default on their related obligations, as applicable.

Lease Commitments

The Company is obligated under a number of operating leases pursuant to which it is leasing office facilities from third parties with remaining terms ranging from approximately one to four years. For certain of its operating leases, the Company had previously entered into subleases. The components of operating lease expense for the three and six months ended June 30, 2023 and 2022 were as follows:
For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Operating lease costs$2 $2 $4 $4 
Less: sublease income(2)(2)(4)(4)
Total operating lease costs (1)$— $— $— $— 

________________________________________

(1)Total operating lease costs are incurred from office leases assumed as part of the Company’s acquisition of American Capital, Ltd.

Supplemental cash flow information related to operating leases for the three and six months ended June 30, 2023 and 2022 were as follows:
For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Cash paid for amounts included in the measurement of operating lease liabilities$4 $4 $8 $8 
Operating ROU assets obtained in exchange for operating lease liabilities$2 $2 $4 $4 

Supplemental balance sheet information as of June 30, 2023 and December 31, 2022 related to operating leases were as follows:
As of
June 30, 2023December 31, 2022
Operating lease ROU assets$15 $20 
Operating lease liabilities$24 $31 
Weighted average remaining lease term (in years)2.93.1
Weighted average discount rate4.6 %4.2 %
 
The following table shows future minimum lease payments under the Company’s operating leases and a reconciliation to the operating lease liability as of June 30, 2023:

Amount
2023$8 
20246 
20256 
20266 
  Total lease payments26 
Less imputed interest(2)
  Total operating lease liabilities$24 

The following table shows future expected rental payments to be received under the Company’s subleases where the Company is the sublessor as of June 30, 2023:

Amount
2023$5 
20244 
20254 
20264 
Total$17 
COMMITMENTS AND CONTINGENCIES
7. COMMITMENTS AND CONTINGENCIES

Investment Commitments

The Company has various commitments to fund investments in its portfolio as described below. As of June 30, 2023 and December 31, 2022, the Company had the following commitments to fund various revolving and delayed draw senior secured and subordinated loans, including commitments to fund which are at (or substantially at) the Company’s discretion:
 As of
 June 30, 2023December 31, 2022
Total revolving and delayed draw loan commitments $2,449 $2,916 
Less: funded commitments(594)(526)
Total unfunded commitments1,855 2,390 
Less: commitments substantially at discretion of the Company— — 
Less: unavailable commitments due to borrowing base or other covenant restrictions(14)(13)
Total net adjusted unfunded revolving and delayed draw loan commitments$1,841 $2,377 
    
Included within the total revolving and delayed draw loan commitments as of June 30, 2023 and December 31, 2022 were delayed draw loan commitments totaling $793 and $1,229, respectively. The Company’s commitment to fund delayed draw loans is generally triggered upon the satisfaction of certain pre-negotiated terms and conditions. Generally, the most significant and uncertain term requires the borrower to satisfy a specific use of proceeds covenant. The use of proceeds covenant typically requires the borrower to use the additional loans for the specific purpose of a permitted acquisition or permitted investment, for example. In addition to the use of proceeds covenant, the borrower is generally required to satisfy additional negotiated covenants (including specified leverage levels).

Also included within the total revolving loan commitments as of June 30, 2023 were commitments to issue up to $359 in letters of credit through a financial intermediary on behalf of certain portfolio companies. As of June 30, 2023, the Company had $52 in letters of credit issued and outstanding under these commitments on behalf of the portfolio companies. For all these letters of credit issued and outstanding, the Company would be required to make payments to third parties if the portfolio companies were to default on their related payment obligations. Of these letters of credit, $37 expire in 2023, $14 expire in 2024 and $1 expire in 2025 and thereafter.
 
The Company also has commitments to co-invest in the SDLP for the Company’s portion of the SDLP’s commitments to fund delayed draw loans to certain portfolio companies of the SDLP. See Note 4 for more information.
 
As of June 30, 2023 and December 31, 2022, the Company was party to agreements to fund equity investment commitments as follows:
 As of
 June 30, 2023December 31, 2022
Total equity commitments$148 $120 
Less: funded equity commitments(64)(69)
Total unfunded equity commitments84 51 
Less: equity commitments substantially at discretion of the Company(51)(51)
Total net adjusted unfunded equity commitments$33 $— 
 
In the ordinary course of business, the Company may sell certain of its investments to third party purchasers. In particular, in connection with the sale of certain controlled portfolio company equity investments (as well as certain other sales) the Company has, and may continue to do so in the future, agreed to indemnify such purchasers for future liabilities arising
from the investments and the related sale transaction. Such indemnification provisions have given rise to liabilities in the past and may do so in the future.

In addition, in the ordinary course of business, the Company may guarantee certain obligations in connection with its portfolio companies (in particular, certain controlled portfolio companies). Under these guarantee arrangements, payments may be required to be made to third parties if such guarantees are called upon or if the portfolio companies were to default on their related obligations, as applicable.

Lease Commitments

The Company is obligated under a number of operating leases pursuant to which it is leasing office facilities from third parties with remaining terms ranging from approximately one to four years. For certain of its operating leases, the Company had previously entered into subleases. The components of operating lease expense for the three and six months ended June 30, 2023 and 2022 were as follows:
For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Operating lease costs$2 $2 $4 $4 
Less: sublease income(2)(2)(4)(4)
Total operating lease costs (1)$— $— $— $— 

________________________________________

(1)Total operating lease costs are incurred from office leases assumed as part of the Company’s acquisition of American Capital, Ltd.

Supplemental cash flow information related to operating leases for the three and six months ended June 30, 2023 and 2022 were as follows:
For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Cash paid for amounts included in the measurement of operating lease liabilities$4 $4 $8 $8 
Operating ROU assets obtained in exchange for operating lease liabilities$2 $2 $4 $4 

Supplemental balance sheet information as of June 30, 2023 and December 31, 2022 related to operating leases were as follows:
As of
June 30, 2023December 31, 2022
Operating lease ROU assets$15 $20 
Operating lease liabilities$24 $31 
Weighted average remaining lease term (in years)2.93.1
Weighted average discount rate4.6 %4.2 %
 
The following table shows future minimum lease payments under the Company’s operating leases and a reconciliation to the operating lease liability as of June 30, 2023:

Amount
2023$8 
20246 
20256 
20266 
  Total lease payments26 
Less imputed interest(2)
  Total operating lease liabilities$24 

The following table shows future expected rental payments to be received under the Company’s subleases where the Company is the sublessor as of June 30, 2023:

Amount
2023$5 
20244 
20254 
20264 
Total$17 
v3.23.2
FAIR VALUE OF FINANCIAL INSTRUMENTS
 6 Months Ended
Jun. 30, 2023
Fair Value Disclosures [Abstract]  
FAIR VALUE OF FINANCIAL INSTRUMENTS
8. FAIR VALUE OF FINANCIAL INSTRUMENTS

The Company follows ASC 825-10, Recognition and Measurement of Financial Assets and Financial Liabilities (“ASC 825-10”), which provides companies the option to report selected financial assets and liabilities at fair value. ASC 825-10 also establishes presentation and disclosure requirements designed to facilitate comparisons between companies that choose different measurement attributes for similar types of assets and liabilities and a better understanding of the effect of the company’s choice to use fair value on its earnings. ASC 825-10 also requires entities to display the fair value of the selected assets and liabilities on the face of the balance sheet. The Company has not elected the ASC 825-10 option to report selected financial assets and liabilities at fair value. With the exception of the line items entitled “other assets” and “debt,” which are reported at amortized cost, the carrying value of all other assets and liabilities approximate fair value.
 
The Company also follows ASC 820-10, Fair Value Measurements and Disclosures (“ASC 820-10”), which expands the application of fair value accounting. ASC 820-10 defines fair value, establishes a framework for measuring fair value in accordance with GAAP and expands disclosure of fair value measurements. ASC 820-10 determines fair value to be the price that would be received for an investment in a current sale, which assumes an orderly transaction between market participants on the measurement date. ASC 820-10 requires the Company to assume that the portfolio investment is sold in its principal market to market participants or, in the absence of a principal market, the most advantageous market, which may be a hypothetical market. Market participants are defined as buyers and sellers in the principal or most advantageous market that are independent, knowledgeable, and willing and able to transact. In accordance with ASC 820-10, the Company has considered its principal market as the market in which the Company exits its portfolio investments with the greatest volume and level of activity. ASC 820-10 specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. In accordance with ASC 820-10, these inputs are summarized in the three broad levels listed below:

•Level 1—Valuations based on quoted prices in active markets for identical assets or liabilities that the Company has the ability to access.

•Level 2—Valuations based on quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly.

•Level 3—Valuations based on inputs that are unobservable and significant to the overall fair value measurement.
 
In addition to using the above inputs in investment valuations, the Company’s investment adviser, as its valuation designee, continues to employ the net asset valuation policy and procedures approved by the Company’s board of directors that
are consistent with the provisions of Rule 2a-5 under the Investment Company Act and ASC 820-10 (see Note 2 for more information). Consistent with its valuation policies and procedures, the Company’s investment adviser evaluates the source of inputs, including any markets in which the Company’s investments are trading (or any markets in which securities with similar attributes are trading), in determining fair value. Because there is not a readily available market value for most of the investments in the Company’s portfolio, the fair value of the investments must typically be determined using unobservable inputs.
 
The Company’s portfolio investments (other than as described below in the following paragraph) are typically valued using two different valuation techniques. The first valuation technique is an analysis of the enterprise value (“EV”) of the portfolio company. Enterprise value means the entire value of the portfolio company to a market participant, including the sum of the values of debt and equity securities used to capitalize the enterprise at a point in time. The primary method for determining EV uses a multiple analysis whereby appropriate multiples are applied to the portfolio company’s EBITDA (generally defined as net income before net interest expense, income tax expense, depreciation and amortization). EBITDA multiples are typically determined based upon review of market comparable transactions and publicly traded comparable companies, if any. The Company’s investment adviser may also employ other valuation multiples to determine EV, such as revenues or, in the case of certain portfolio companies in the power generation industry, kilowatt capacity. The second method for determining EV uses a discounted cash flow analysis whereby future expected cash flows of the portfolio company are discounted to determine a present value using estimated discount rates (typically a weighted average cost of capital based on costs of debt and equity consistent with current market conditions). The EV analysis is performed to determine the value of equity investments, the value of debt investments in portfolio companies where the Company has control or could gain control through an option or warrant security, and to determine if there is credit impairment for debt investments. If debt investments are credit impaired, an EV analysis may be used to value such debt investments; however, in addition to the methods outlined above, other methods such as a liquidation or wind-down analysis may be utilized to estimate enterprise value. The second valuation technique is a yield analysis, which is typically performed for non-credit impaired debt investments in portfolio companies where the Company does not own a controlling equity position. To determine fair value using a yield analysis, a current price is imputed for the investment based upon an assessment of the expected market yield for a similarly structured investment with a similar level of risk. In the yield analysis, the Company’s investment adviser considers the current contractual interest rate, the maturity and other terms of the investment relative to risk of the company and the specific investment. A key determinant of risk, among other things, is the leverage through the investment relative to the enterprise value of the portfolio company. As debt investments held by the Company are substantially illiquid with no active transaction market, the Company’s investment adviser depends on primary market data, including newly funded transactions, as well as secondary market data with respect to high yield debt instruments and syndicated loans, as inputs in determining the appropriate market yield, as applicable.
 
For other portfolio investments such as investments in the SDLP Certificates and IHAM, discounted cash flow analysis is the primary technique utilized to determine fair value. Expected future cash flows associated with the investment are discounted to determine a present value using a discount rate that reflects estimated market return requirements.

The following table presents fair value measurements of cash and cash equivalents, restricted cash, investments, derivatives and unfunded revolving and delayed draw loan commitments as of June 30, 2023:

 Fair Value Measurements Using
TotalLevel 1Level 2Level 3
Cash and cash equivalents$411 $411 $— $— 
Restricted cash$42 $42 $— $— 
Investments not measured at net asset value$21,491 $73 $661 $20,757 
Investments measured at net asset value(1)5 
 Total investments$21,496 
Derivatives$(2)$— $(2)$— 
Unfunded revolving and delayed draw loan commitments(2)$(41)$— $— $(41)
________________________________________

(1)Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet.
(2)The fair value of unfunded revolving and delayed draw loan commitments is included in “accounts payable and other liabilities” in the accompanying consolidated balance sheet.

The following table presents fair value measurements of cash and cash equivalents, restricted cash, investments, derivatives and unfunded revolving and delayed draw loan commitments as of December 31, 2022:

 Fair Value Measurements Using
TotalLevel 1Level 2Level 3
Cash and cash equivalents$303 $303 $— $— 
Restricted cash$34 $34 $— $— 
Investments not measured at net asset value$21,775 $54 $360 $21,361 
Investments measured at net asset value (1)5 
  Total investments$21,780 
Derivatives$(21)$— $(21)$— 
Unfunded revolving and delayed draw loan commitments(2)$(57)$— $— $(57)
________________________________________

(1)Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet.

(2)The fair value of unfunded revolving and delayed draw loan commitments is included in “accounts payable and other liabilities” in the accompanying consolidated balance sheet.

The following tables summarize the significant unobservable inputs the Company’s investment adviser used to value the majority of the Company’s investments categorized within Level 3 as of June 30, 2023 and December 31, 2022. The tables are not intended to be all-inclusive, but instead to capture the significant unobservable inputs relevant to the investment adviser’s determination of fair values.

 As of June 30, 2023
Unobservable Input
Asset CategoryFair ValuePrimary Valuation TechniquesInputEstimated Range
Weighted Average(1)
First lien senior secured loans$8,529 Yield analysisMarket yield
7.3% - 21.6%
12.6%
Second lien senior secured loans3,669 Yield analysisMarket yield
10.0% - 23.7%
15.0%
Subordinated certificates of the SDLP1,237 Discounted cash flow analysisDiscount rate
12.8% - 15.0%
13.5%
Senior subordinated loans1,045 Yield analysisMarket yield
8.0% - 20.0%
14.1%
Preferred equity2,140 EV market multiple analysisEBITDA multiple
3.0x - 40.0x
16.4x
Ivy Hill Asset Management, L.P.(2)2,151 Discounted cash flow analysisDiscount rate
12.8% - 31.1%
14.3%
Other equity1,986 EV market multiple analysisEBITDA multiple
3.6x - 40.6x
14.3x
Total investments$20,757 
________________________________________

(1)Unobservable inputs were weighted by the relative fair value of the investments.

(2)Includes the Company’s subordinated loan and equity investments in IHAM, as applicable.
 As of December 31, 2022
Unobservable Input
Asset CategoryFair ValuePrimary Valuation TechniquesInputEstimated Range
Weighted Average(1)
First lien senior secured loans$9,165 Yield analysisMarket yield
7.6% - 26.1%
12.3%
Second lien senior secured loans3,841 Yield analysisMarket yield
11.0% - 32.4%
14.9%
Subordinated certificates of the SDLP1,249 Discounted cash flow analysisDiscount rate
12.4% - 14.8%
13.5%
Senior subordinated loans1,021 Yield analysisMarket yield
8.0% - 16.3%
12.9%
Preferred equity2,023 EV market multiple analysisEBITDA multiple
2.6x - 40.6x
15.7x
Ivy Hill Asset Management, L.P.(2)2,201 Discounted cash flow analysisDiscount rate
12.9% - 25.7%
14.2%
Other equity1,861 EV market multiple analysisEBITDA multiple
2.1x - 52.1x
15.6x
Total investments$21,361 
________________________________________

(1)Unobservable inputs were weighted by the relative fair value of the investments.

(2)Includes the Company’s subordinated loan and equity investments in IHAM, as applicable.

Changes in market yields, discount rates or EBITDA multiples, each in isolation, may change the fair value of certain of the Company’s investments. Generally, an increase in market yields or discount rates or a decrease in EBITDA multiples may result in a decrease in the fair value of certain of the Company’s investments.
 
Due to the inherent uncertainty of determining the fair value of investments that do not have a readily available market value, the fair value of the Company’s investments may fluctuate from period to period. Additionally, the fair value of the Company’s investments may differ significantly from the values that would have been used had a ready market existed for such investments and may differ materially from the values that the Company may ultimately realize. Further, such investments are generally subject to legal and other restrictions on resale or otherwise are less liquid than publicly traded securities. If the Company was required to liquidate a portfolio investment in a forced or liquidation sale, it could realize significantly less than the value at which the Company has recorded it.

In addition, changes in the market environment and other events that may occur over the life of the investments may cause the gains or losses ultimately realized on these investments to be different than the unrealized gains or losses reflected in the valuations currently assigned.

The following tables present changes in investments that use Level 3 inputs as of and for the three and six months ended June 30, 2023:

 As of and For the Three Months Ended June 30, 2023
Balance as of March 31, 2023$20,683 
Net realized losses(68)
Net unrealized gains94 
Purchases1,167 
Sales(160)
Repayments(932)
PIK interest and dividends100 
Net accretion of discount on securities2 
Net transfers in and/or out of Level 3(129)
Balance as of June 30, 2023$20,757 
 As of and For the Six Months Ended June 30, 2023
Balance as of December 31, 2022$21,361 
Net realized losses(88)
Net unrealized gains83 
Purchases2,239 
Sales(857)
Repayments(1,995)
PIK interest and dividends181 
Net accretion of discount on securities6 
Net transfers in and/or out of Level 3(173)
Balance as of June 30, 2023$20,757 

Investments were transferred into and out of Level 3 during the three and six months ended June 30, 2023. Transfers into and out of Level 3 were generally as a result of changes in the observability of significant inputs or available market data for certain portfolio companies.

As of June 30, 2023, the net unrealized depreciation on the investments that use Level 3 inputs was $129.

For the three and six months ended June 30, 2023, the total amount of gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to the Company’s Level 3 assets still held as of June 30, 2023, and reported within the net unrealized gains (losses) on investments, foreign currency and other transactions in the Company’s consolidated statement of operations was $55 and $47, respectively.

The following tables present changes in investments that use Level 3 inputs as of and for the three and six months ended June 30, 2022:
As of and For the Three Months Ended June 30, 2022
Balance as of March 31, 2022$19,375 
Net realized losses(24)
Net unrealized losses(145)
Purchases2,817 
Sales(659)
Repayments(434)
PIK interest and dividends80 
Net accretion of discount on securities2 
Net transfers in and/or out of Level 3— 
Balance as of June 30, 2022$21,012 
As of and For the Six Months Ended June 30, 2022
Balance as of December 31, 2021$19,908 
Net realized gains45 
Net unrealized losses(152)
Purchases4,671 
Sales(2,206)
Repayments(1,406)
PIK interest and dividends147 
Net accretion of discount on securities5 
Net transfers in and/or out of Level 3— 
Balance as of June 30, 2022$21,012 

As of June 30, 2022, the net unrealized appreciation on the investments that use Level 3 inputs was $13.

For the three and six months ended June 30, 2022, the total amount of gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to the Company’s Level 3 assets still held as of June 30, 2022, and reported within the net unrealized gains (losses) on investments, foreign currency and other transactions in the Company’s consolidated statement of operations was $(157) and $(104), respectively.
The following are the carrying and fair values of the Company’s debt obligations as of June 30, 2023 and December 31, 2022. Fair value is estimated by discounting remaining payments using applicable current market rates, which take into account changes in the Company’s marketplace credit ratings, or market quotes, if available.

 As of
 June 30, 2023December 31, 2022
Carrying value(1)Fair value(4)Carrying value(1)Fair value(4)
Revolving Credit Facility$1,922 $1,922 $2,246 $2,246 
Revolving Funding Facility850 850 800 800 
SMBC Funding Facility401 401 451 451 
BNP Funding Facility475 475 245 245 
2024 Convertible Notes (principal amount outstanding of $403)
401 (2)406 399 (2)428 
2023 Notes (principal amount outstanding of $0 and $750, respectively)
— — 750 (2)749 
2024 Notes (principal amount outstanding of $900)
899 (2)880 898 (2)873 
March 2025 Notes (principal amount outstanding of $600)
598 (2)574 597 (2)570 
July 2025 Notes (principal amount outstanding of $1,250)
1,256 (2)1,159 1,258 (2)1,157 
January 2026 Notes (principal amount outstanding of $1,150)
1,145 (2)1,069 1,144 (2)1,059 
July 2026 Notes (principal amount outstanding of $1,000)
992 (2)871 991 (2)850 
2027 Notes (principal amount outstanding of $500)
495 (2)434 494 (2)427 
2028 Notes (principal amount outstanding of $1,250)
1,247 (2)1,035 1,247 (2)1,007 
2031 Notes (principal amount outstanding of $700)
690 (2)535 690 (2)516 
Total$11,371 (3)$10,611 $12,210 (3)$11,378 
________________________________________

(1)The Revolving Credit Facility, the Revolving Funding Facility, the SMBC Funding Facility and the BNP Funding Facility carrying values are the same as the principal amounts outstanding.

(2)Represents the aggregate principal amount outstanding, less unamortized debt issuance costs and the net unaccreted/amortized discount or premium recorded upon issuance.

(3)Total principal amount of debt outstanding totaled $11,401 and $12,245 as of June 30, 2023 and December 31, 2022, respectively.

(4)The fair value of these debt obligations would be categorized as Level 2 under ASC 820-10.
v3.23.2
STOCKHOLDERS’ EQUITY
 6 Months Ended
Jun. 30, 2023
Equity [Abstract]  
STOCKHOLDERS’ EQUITY
9. STOCKHOLDERS’ EQUITY

The Company may from time to time issue and sell shares of its common stock through public or “at the market” offerings. In connection with the issuance of its common stock, the Company issued and sold the following shares of common stock during the six months ended June 30, 2023:


Issuances of Common Stock		Number of Shares IssuedGross ProceedsUnderwriting Fees/Offering ExpensesNet ProceedsAverage Offering Price Per Share(1)
Public offerings12.1$236.8 $13.4 $223.4 $19.61 (2)
“At the market” offerings25.3486.0 5.6 480.4 $19.22 
Total37.4$722.8 $19.0 $703.8 
________________________________________
(1)    Represents the gross offering price per share before deducting underwriting discounts and commissions and offering expenses.

(2)    12.1 of the shares were sold to the underwriters for a price of $18.53 per share which the underwriters were then permitted to sell at variable prices to the public.

“At the Market” Offerings

The Company is party to equity distribution agreements with several banks (the “Equity Distribution Agreements”). The Equity Distribution Agreements provide that the Company may from time to time issue and sell, by means of “at the market” offerings, up to $1,000 of its common stock. Subject to the terms and conditions of the Equity Distribution Agreements, sales of common stock, if any, may be made in transactions that are deemed to be “at the market” offerings as defined in Rule 415(a)(4) under the Securities Act of 1933, as amended. Under the Equity Distribution Agreements, common stock with an aggregate offering amount of $771 remained available for issuance as of June 30, 2023.

See Note 11 for information regarding shares of common stock issued or purchased in accordance with the Company’s dividend reinvestment plan.

Stock Repurchase Program

The Company is authorized under its stock repurchase program to purchase up to $1,000 in the aggregate of its outstanding common stock in the open market at certain thresholds below its net asset value per share, in accordance with the guidelines specified in Rule 10b-18 under the Securities Exchange Act of 1934, as amended. The timing, manner, price and amount of any share repurchases will be determined by the Company, in its sole discretion, based upon an evaluation of economic and market conditions, stock price, applicable legal and regulatory requirements and other factors. The stock repurchase program does not require the Company to repurchase any specific number of shares of common stock or any shares of common stock at all. Consequently, the Company cannot assure stockholders that any specific number of shares of common stock, if any, will be repurchased under the stock repurchase program. As of June 30, 2023, the expiration date of the stock repurchase program is February 15, 2024. The program may be suspended, extended, modified or discontinued at any time. As of June 30, 2023, there was $1,000 available for repurchases under the stock repurchase program.
During the six months ended June 30, 2023 and 2022, the Company did not repurchase any shares of the Company’s common stock under the stock repurchase program.
v3.23.2
EARNINGS PER SHARE
 6 Months Ended
Jun. 30, 2023
Earnings Per Share [Abstract]  
EARNINGS PER SHARE
10. EARNINGS PER SHARE

The following information sets forth the computations of basic and diluted net increase in stockholders’ equity resulting from operations per share for the three and six months ended June 30, 2023 and 2022:

 For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Net increase in stockholders’ equity resulting from operations—basic$331 $111 $609 $322 
Adjustment for interest expense on 2024 Convertible Notes(1)4 4 8 8 
Net increase in stockholders’ equity resulting from operations—diluted$335 $115 $617 $330 
Weighted average shares of common stock outstanding—basic547 494 541 487 
Assumed conversion of 2024 Convertible Notes20 20 20 20 
Weighted average shares of common stock outstanding—diluted567 514 561 507 
Net increase in stockholders’ equity resulting from operations per share—basic$0.61 $0.22 $1.13 $0.66 
Net increase in stockholders’ equity resulting from operations per share—diluted$0.59 $0.22 $1.10 $0.65 
________________________________________

(1)    Includes the impact of income based fees.
For the purpose of calculating diluted net increase in stockholders’ equity resulting from operations per share for the three and six months ended June 30, 2023 and 2022, the Company utilized the if-converted method which assumes full share settlement for the aggregate value of the 2024 Convertible Notes.
v3.23.2
DIVIDENDS AND DISTRIBUTIONS
 6 Months Ended
Jun. 30, 2023
Equity [Abstract]  
DIVIDENDS AND DISTRIBUTIONS
11. DIVIDENDS AND DISTRIBUTIONS

The following table summarizes the Company’s dividends declared and payable during the six months ended June 30, 2023 and 2022:

Date declaredRecord datePayment datePer share
amount		Total amount
April 25, 2023June 15, 2023June 30, 2023$0.48 $266 
February 7, 2023March 15, 2023March 31, 20230.48 261 
Total dividends declared and payable for the six months ended June 30, 2023
$0.96 $527 
April 26, 2022June 15, 2022June 30, 2022$0.42 $208 
February 9, 2022June 15, 2022June 30, 20220.03 (1)15 
February 9, 2022March 15, 2022March 31, 20220.42 205 
February 9, 2022March 15, 2022March 31, 20220.03 (1)15 
Total dividends declared and payable for the six months ended June 30, 2022
$0.90 $443 
___________________________________________________________________________
(1)Represents an additional dividend.

The Company has a dividend reinvestment plan, whereby the Company may buy shares of its common stock in the open market or issue new shares in order to satisfy dividend reinvestment requests. When the Company issues new shares in connection with the dividend reinvestment plan, the issue price is equal to the closing price of its common stock on the dividend payment date. Dividend reinvestment plan activity for the six months ended June 30, 2023 and 2022, was as follows:

For the Six Months Ended June 30,
20232022
Shares issued0.7 0.6 
Average issue price per share$18.79 $20.95 
Shares purchased by plan agent to satisfy dividends declared and payable during the period for stockholders 0.8 0.7 
Average purchase price per share$18.35 $18.60 
v3.23.2
RELATED PARTY TRANSACTIONS
 6 Months Ended
Jun. 30, 2023
Related Party Transactions [Abstract]  
RELATED PARTY TRANSACTIONS
12. RELATED PARTY TRANSACTIONS

In accordance with the investment advisory and management agreement, the Company bears all costs and expenses of the operation of the Company and reimburses its investment adviser or its affiliates for certain of such costs and expenses paid for by the investment adviser or its affiliates on behalf of the Company. For the three and six months ended June 30, 2023, the Company’s investment adviser or its affiliates incurred and the Company reimbursed such expenses totaling $2 and $3, respectively. For the three and six months ended June 30, 2022, the Company’s investment adviser or its affiliates incurred and the Company reimbursed such expenses totaling $1 and $2, respectively.

The Company has entered into agreements with Ares Management LLC and IHAM, pursuant to which Ares Management LLC and IHAM are entitled to use the Company’s proprietary portfolio management software. For the three and six months ended June 30, 2023, amounts payable to the Company under these agreements totaled $0 and $0, respectively. For the three and six months ended June 30, 2022, amounts payable to the Company under these agreements totaled $0 and $0, respectively.

See Notes 3 and 4 for descriptions of other related party transactions.
v3.23.2
FINANCIAL HIGHLIGHTS
 6 Months Ended
Jun. 30, 2023
Investment Company [Abstract]  
FINANCIAL HIGHLIGHTS
13. FINANCIAL HIGHLIGHTS

The following is a schedule of financial highlights as of and for the six months ended June 30, 2023 and 2022:

 As of and For the Six Months Ended June 30,
Per Share Data:20232022
Net asset value, beginning of period(1)$18.40 $18.96 
Issuances of common stock0.01 0.10 
Net investment income for period(2)1.17 0.93 
Net realized and unrealized losses for period(2)(0.04)(0.28)
Net increase in stockholders’ equity1.14 0.75 
Total distributions to stockholders(3)(0.96)(0.90)
Net asset value at end of period(1)$18.58 $18.81 
Per share market value at end of period$18.79 $17.93 
Total return based on market value(4)7.17 %(13.45)%
Total return based on net asset value(5)6.28 %3.98 %
Shares outstanding at end of period557496 
Ratio/Supplemental Data: 
Net assets at end of period$10,354 $9,335 
Ratio of operating expenses to average net assets(6)(7)12.37 %9.67 %
Ratio of net investment income to average net assets(6)(8)12.55 %9.97 %
Portfolio turnover rate(6)23 %36 %
_________________________________________________________________________________

(1)The net assets used equals the total stockholders’ equity on the consolidated balance sheet.

(2)Weighted average basic per share data.

(3)Includes additional dividends of $0.06 per share for the six months ended June 30, 2022.

(4)For the six months ended June 30, 2023, the total return based on market value equaled the increase of the ending market value at June 30, 2023 of $18.79 per share from the ending market value at December 31, 2022 of $18.47 per share plus the declared and payable dividends of $0.96 per share for the six months ended June 30, 2023, divided by the market value at December 31, 2022. For the six months ended June 30, 2022, the total return based on market value equaled the decrease of the ending market value at June 30, 2022 of $17.93 per share from the ending market value at December 31, 2021 of $21.19 per share plus the declared and payable dividends of $0.90 per share for the six months ended June 30, 2022, divided by the market value at December 31, 2021. The Company’s performance changes over time and currently may be different than that shown. Past performance is no guarantee of future results.

(5)For the six months ended June 30, 2023, the total return based on net asset value equaled the change in net asset value during the period plus the declared and payable dividends of $0.96 per share for the six months ended June 30, 2023, divided by the beginning net asset value for the period. For the six months ended June 30, 2022, the total return based on net asset value equaled the change in net asset value during the period plus the declared and payable dividends of $0.90 per share for the six months ended June 30, 2022, divided by the beginning net asset value for the period. The Company’s performance changes over time and currently may be different than that shown. Past performance is no guarantee of future results.

(6)The ratios reflect an annualized amount.
(7)For the six months ended June 30, 2023 and 2022, the ratio of operating expenses to average net assets consisted of the following:
 For the Six Months Ended June 30,
20232022
Base management fees3.19 %3.25 %
Income based fees and capital gains incentive fees3.08 %1.76 %
Cost of borrowing5.67 %4.25 %
Other operating expenses0.43 %0.41 %
(8)The ratio of net investment income to average net assets excludes income taxes related to realized gains and losses.
v3.23.2
SUBSEQUENT EVENTS
 6 Months Ended
Jun. 30, 2023
Subsequent Events [Abstract]  
SUBSEQUENT EVENTS
14. SUBSEQUENT EVENTS

The Company’s management has evaluated subsequent events through the date of issuance of the consolidated financial statements included herein. There have been no subsequent events that occurred during such period that would require disclosure in this Form 10-Q or would be required to be recognized in the consolidated financial statements as of and for the six months ended June 30, 2023.
v3.23.2
Pay vs Performance Disclosure - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Pay vs Performance Disclosure        
Net Income (Loss) $ 331 $ 111 $ 609 $ 322
v3.23.2
Insider Trading Arrangements
 3 Months Ended
Jun. 30, 2023
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.23.2
N-2 - $ / shares
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2023
Cover [Abstract]                      
Entity Central Index Key                     0001287750
Amendment Flag                     false
Securities Act File Number                     814-00663
Document Type                     10-Q
Entity Registrant Name                     ARES CAPITAL CORPORATION
Entity Address, Address Line One                     245 Park Avenue
Entity Address, Address Line Two                     44th Floor
Entity Address, City or Town                     New York
Entity Address, State or Province                     NY
Entity Address, Postal Zip Code                     10167
City Area Code                     212
Local Phone Number                     750-7300
Entity Emerging Growth Company                     false
General Description of Registrant [Abstract]                      
Risk Factors [Table Text Block]                     Risk Factors
In addition to the other information set forth in this report, you should carefully consider the risk factors described below and in Part I, “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2022 and those set forth under the caption “Risk Factors” in our Form N-2, which could materially affect our business, financial condition and/or operating results. The risks described in our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, and in the Form N-2 are not the only risks facing us. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially and adversely affect our business, financial condition and/or operating results.

Our business is dependent on bank relationships and recent strain on the banking system may adversely impact us.
The financial markets recently have encountered volatility associated with concerns about the balance sheets of banks, especially small and regional banks who may have significant losses associated with investments that make it difficult to fund demands to withdraw deposits and other liquidity needs. Although the federal government has assisted some of these banks and protected depositors, uncertainty remains. Our business is dependent on bank relationships and we are proactively monitoring the financial health of such bank relationships. Continued strain on the banking system may adversely impact our business, financial condition and results of operations.
Share Price [Table Text Block]                    
Price Range of Common Stock

The following table sets forth, for the first two quarters of the year ending December 31, 2023 and each fiscal quarter for the fiscal years ended December 31, 2022 and 2021, the net asset value per share of our common stock, the range of high and low closing sales prices of our common stock, the closing sales price as a premium (discount) to net asset value and the dividends or distributions declared by us. On July 19, 2023, the last reported closing sales price of our common stock on the NASDAQ Global Select Market was $19.62 per share, which represented a premium of approximately 5.60% to the net asset value per share reported by us as of June 30, 2023.

Net Asset Value(1)
Price Range
High
Sales Price
Premium
(Discount)
to Net Asset Value(2)
Low
Sales Price
Premium
(Discount)
to Net Asset Value(2)
Cash
Dividend
Per Share(3)
High
Low
Year ended December 31, 2021
First Quarter
$17.45 $19.23 $16.51 10.20 %(5.39)%$0.40 
Second Quarter
$18.16 $19.97 $18.29 9.97 %0.72 %$0.40 
Third Quarter
$18.52 $20.43 $19.52 10.31 %5.40 %$0.41 
Fourth Quarter
$18.96 $21.70 $19.66 14.45 %3.69 %$0.41 
Year ended December 31, 2022
First Quarter
$19.03 $22.58 $19.70 18.65 %3.52 %$0.54 (4)
Second Quarter
$18.81 $22.44 $17.12 19.30 %(8.98)%$0.42 
Third Quarter $18.56 $20.70 $16.84 11.53 %(9.27)%$0.43 
Fourth Quarter
$18.40 $19.76 $17.30 7.39 %(5.98)%$0.48 
Year ending December 31, 2023
First Quarter
$18.45 $20.04 $17.19 8.62 %(6.83)%$0.48 
Second Quarter
$18.58 $19.11 $17.65 2.85 %(5.01)%$0.48 
_______________________________________________________________________________

(1)    Net asset value per share is determined as of the last day in the relevant quarter and therefore may not reflect the net asset value per share on the date of the high and low closing sales prices. The net asset values shown are based on outstanding shares at the end of the relevant quarter.

(2)    Calculated as the respective high or low closing sales price less net asset value, divided by net asset value (in each case, as of the applicable quarter).
(3)    Represents the dividend or distribution declared in the relevant quarter.
(4)    Consists of a quarterly dividend of $0.42 per share and additional quarterly dividends totaling $0.12 per share, all of which were declared in the first quarter of 2022 and paid on March 31, 2022, June 30, 2022, September 30, 2022 and December 29, 2022.
Lowest Price or Bid $ 17.65 $ 17.19 $ 17.30 $ 16.84 $ 17.12 $ 19.70 $ 19.66 $ 19.52 $ 18.29 $ 16.51  
Highest Price or Bid $ 19.11 $ 20.04 $ 19.76 $ 20.70 $ 22.44 $ 22.58 $ 21.70 $ 20.43 $ 19.97 $ 19.23  
Highest Price or Bid, Premium (Discount) to NAV [Percent] 2.85% 8.62% 7.39% 11.53% 19.30% 18.65% 14.45% 10.31% 9.97% 10.20%  
Lowest Price or Bid, Premium (Discount) to NAV [Percent] (5.01%) (6.83%) (5.98%) (9.27%) (8.98%) 3.52% 3.69% 5.40% 0.72% (5.39%)  
NAV Per Share $ 18.58   $ 18.40   $ 18.81   $ 18.96       $ 18.58
Capital Stock, Long-Term Debt, and Other Securities [Abstract]                      
Long Term Debt [Table Text Block]                    
Our debt obligations consisted of the following as of June 30, 2023 and December 31, 2022:
 As of 
 June 30, 2023December 31, 2022 
(in millions)Total
Aggregate
Principal
Amount
Available/
Outstanding(1)		 Principal Amount OutstandingCarrying
Value		 Total
Aggregate
Principal
Amount
Available/
Outstanding(1)		 Principal Amount OutstandingCarrying
Value		 
Revolving Credit Facility$4,758 (2)$1,922 $1,922 $4,843 (2)$2,246 $2,246 
Revolving Funding Facility1,775 850 850 1,775 800 800 
SMBC Funding Facility800 (3)401 401 800 (3)451 451 
BNP Funding Facility790 475 475 300 245 245 
2024 Convertible Notes403 403 401 (4)403 403 399 (4)
2023 Notes— — — 750 750 750 (4)
2024 Notes900 900 899 (4)900 900 898 (4)
March 2025 Notes600 600 598 (4)600 600 597 (4)
July 2025 Notes1,250 1,250 1,256 (4)1,250 1,250 1,258 (4)
January 2026 Notes1,150 1,150 1,145 (4)1,150 1,150 1,144 (4)
July 2026 Notes1,000 1,000 992 (4)1,000 1,000 991 (4)
2027 Notes500 500 495 (4)500 500 494 (4)
2028 Notes1,250 1,250 1,247 (4)1,250 1,250 1,247 (4)
2031 Notes700 700 690 (4)700 700 690 (4)
Total$15,876 $11,401 $11,371 $16,221 $12,245 $12,210 
________________________________________

(1)Represents the total aggregate amount committed or outstanding, as applicable, under such instrument. Borrowings under the committed Revolving Credit Facility, Revolving Funding Facility, SMBC Funding Facility and BNP Funding Facility (each as defined below) are subject to borrowing base and other restrictions.

(2)Provides for a feature that allows us, under certain circumstances, to increase the size of the Revolving Credit Facility (as defined below) to a maximum of $7.1 billion and $7.3 billion, as of June 30, 2023 and December 31, 2022, respectively.

(3)Provides for a feature that allows ACJB (as defined below), under certain circumstances, to increase the size of the SMBC Funding Facility (as defined below) to a maximum of $1.0 billion.

(4)Represents the aggregate principal amount outstanding, less unamortized debt issuance costs and the net unaccreted/amortized discount or premium recorded upon issuance. In February 2023, we repaid in full the 2023 Notes (as defined below) upon their maturity.

 The weighted average stated interest rate and weighted average maturity, both on aggregate principal amount outstanding, of all our debt outstanding as of June 30, 2023 were 4.6% and 3.5 years, respectively, and as of December 31, 2022 were 4.2% and 3.6 years, respectively.
 
The ratio of total principal amount of debt outstanding to stockholders’ equity as of June 30, 2023 was 1.10:1.00 compared to 1.29:1.00 as of December 31, 2022.
 
Revolving Credit Facility
 
We are party to a senior secured revolving credit facility (as amended and restated, the “Revolving Credit Facility”), that allows us to borrow up to $4.8 billion at any one time outstanding. The Revolving Credit Facility consists of a $1.1 billion term loan tranche and a $3.7 billion revolving tranche. For $908 million of the term loan tranche, the stated maturity date is April 19, 2028. For $116 million of the term loan tranche, the stated maturity date is March 31, 2027. For $28 million of the term loan tranche, the stated maturity date is March 31, 2026. For the remaining $50 million of the term loan tranche, the stated maturity date is March 30, 2025. For $2.9 billion of the revolving tranche, the end of the revolving period and the stated maturity date are April 19, 2027 and April 19, 2028, respectively. For $494 million of the revolving tranche, the end of the revolving period and the stated maturity date are March 31, 2026 and March 31, 2027, respectively. For $107 million of the revolving tranche, the end of the revolving period and the stated maturity date are March 31, 2025 and March 31, 2026, respectively. For the remaining $150 million of the revolving tranche, the end of the revolving period and the stated maturity date are March 30, 2024 and March 30, 2025, respectively. The Revolving Credit Facility also provides for a feature that allows us, under certain circumstances, to increase the overall size of the Revolving Credit Facility to a maximum of $7.1 billion. The interest rate charged on the Revolving Credit Facility is based on SOFR (or an alternative rate of interest for certain loans, commitments and/or other extensions of credit denominated in Sterling, Canadian Dollars, Euros and certain other foreign currencies) plus a credit spread adjustment of 0.10% and an applicable spread of either 1.75% or 1.875% or an “alternate base rate” (as defined in the agreements governing the Revolving Credit Facility) plus a credit spread adjustment of 0.10% and an applicable spread of either 0.75% or 0.875%, in each case, determined monthly based on the total amount of the borrowing base relative to the sum of (i) the greater of (a) the aggregate amount of revolving exposure and term loans outstanding under the Revolving Credit Facility and (b) 85% of the total commitments of the Revolving Credit Facility (or, if higher, the total revolving exposure) plus (ii) other debt, if any, secured by the same collateral as the Revolving Credit Facility. As of June 30, 2023, the applicable spread in effect was 1.75%. We are also required to pay a letter of credit fee of either 2.00% or 2.125% per annum on letters of credit issued, determined monthly based on the total amount of the borrowing base relative to the total commitments of the Revolving Credit Facility and other debt, if any, secured by the same collateral as the Revolving Credit Facility. Additionally, we are required to pay a commitment fee of 0.375% per annum on any unused portion of the Revolving Credit Facility. As of June 30, 2023, there was $1.9 billion outstanding under the Revolving Credit Facility and we were in compliance in all material respects with the terms of the Revolving Credit Facility.

Revolving Funding Facility
 
We and our consolidated subsidiary, Ares Capital CP Funding LLC (“Ares Capital CP”), are party to a revolving funding facility (as amended, the “Revolving Funding Facility”), that allows Ares Capital CP to borrow up to $1.8 billion at any one time outstanding. The Revolving Funding Facility is secured by all of the assets held by, and the membership interest in, Ares Capital CP. The end of the reinvestment period and the stated maturity date for the Revolving Funding Facility are December 29, 2024 and December 29, 2026, respectively. The interest rate charged on the Revolving Funding Facility is based on SOFR plus a credit spread adjustment of 0.10% or a “base rate” (as defined in the agreements governing the Revolving Funding Facility) plus an applicable spread of 1.90% per annum. Ares Capital CP is also required to pay a commitment fee of between 0.50% and 1.25% per annum depending on the size of the unused portion of the Revolving Funding Facility. As of June 30, 2023, there was $850 million outstanding under the Revolving Funding Facility and we and Ares Capital CP were in compliance in all material respects with the terms of the Revolving Funding Facility.

SMBC Funding Facility
 
We and our consolidated subsidiary, Ares Capital JB Funding LLC (“ACJB”), are party to a revolving funding facility (as amended, the “SMBC Funding Facility”), with ACJB, as the borrower, and Sumitomo Mitsui Banking Corporation, as the administrative agent and collateral agent, that allows ACJB to borrow up to $800 million at any one time outstanding. The SMBC Funding Facility also provides for a feature that allows ACJB, subject to receiving certain consents, to increase the overall size of the SMBC Funding Facility to $1.0 billion. The SMBC Funding Facility is secured by all of the assets held by ACJB. The end of the reinvestment period and the stated maturity date for the SMBC Funding Facility are May 28, 2024 and May 28, 2026, respectively. The reinvestment period and the stated maturity date are both subject to two one-year extensions by mutual agreement. The interest rate charged on the SMBC Funding Facility is based on an applicable spread of either 1.75% or 2.00% over one month SOFR plus a credit spread adjustment of 0.10%, or 0.75% or 1.00% over a “base rate” (as defined in the agreements governing the SMBC Funding Facility), in each case, determined monthly based on the amount of the average borrowings outstanding under the SMBC Funding Facility. As of June 30, 2023, the applicable spread in effect was 1.75%. ACJB is also required to pay a commitment fee of between 0.50% and 1.00% per annum depending on the size of the unused portion of the SMBC Funding Facility. As of June 30, 2023, there was $401 million outstanding under the SMBC Funding Facility and we and ACJB were in compliance in all material respects with the terms of the SMBC Funding Facility.
  
BNP Funding Facility
 
We and our consolidated subsidiary, ARCC FB Funding LLC (“AFB”), are party to a revolving funding facility (as amended, the “BNP Funding Facility”) with AFB, as the borrower, and BNP Paribas, as the administrative agent and lender, that allows AFB to borrow up to $790 million at any one time outstanding. The BNP Funding Facility is secured by all of the assets held by AFB. The end of the reinvestment period and the stated maturity date for the BNP Funding Facility are April 20, 2026 and April 20, 2028, respectively. The reinvestment period and the stated maturity date are both subject to a one-year extension by mutual agreement. As of June 30, 2023, the interest rate charged on the BNP Funding Facility was based on three month SOFR, or a “base rate” (as defined in the agreements governing the BNP Funding Facility) plus a margin of (i) 2.80% during the reinvestment period and (ii) 3.30% following the reinvestment period. AFB is required to pay a commitment fee of between 0.00% and 1.25% per annum depending on the size of the unused portion of the BNP Funding Facility. As of June 30, 2023, there was $475 million outstanding under the BNP Funding Facility and we and AFB were in compliance in all material respects with the terms of the BNP Funding Facility.

Convertible Unsecured Notes
 
We have issued $403 million in aggregate principal amount of unsecured convertible notes that mature on March 1, 2024 (the “2024 Convertible Notes”) unless previously converted or repurchased in accordance with its terms. We do not have the right to redeem the 2024 Convertible Notes prior to maturity. The 2024 Convertible Notes bear interest at a rate of 4.625% per annum, payable semi-annually.

In certain circumstances, assuming the conversion date below has not already passed, the 2024 Convertible Notes will be convertible into cash, shares of our common stock or a combination of cash and shares of our common stock, at our election, at the conversion rate (listed below as of June 30, 2023) subject to customary anti-dilution adjustments and the requirements of the indenture (the “2024 Convertible Notes Indenture”). Prior to the close of business on the business day immediately preceding the conversion date (listed below), holders may convert their 2024 Convertible Notes only under certain circumstances set forth in the 2024 Convertible Notes Indenture. On or after the conversion date until the close of business on the second scheduled trading day immediately preceding the maturity date for the 2024 Convertible Notes, holders may convert their 2024 Convertible Notes at any time. In addition, if we engage in certain corporate events as described in the 2024 Convertible Notes Indenture, holders of the 2024 Convertible Notes may require us to repurchase for cash all or part of the 2024 Convertible Notes at a repurchase price equal to 100% of the principal amount of the 2024 Convertible Notes to be repurchased, plus accrued and unpaid interest through, but excluding, the required repurchase date.

Certain key terms related to the convertible features for the 2024 Convertible Notes as of June 30, 2023 are listed below.
2024 Convertible Notes
Conversion premium15.0 %
Closing stock price at issuance$17.29 
Closing stock price dateMarch 5, 2019
Conversion price(1)$19.55 
Conversion rate (shares per one thousand dollar principal amount)(1)51.1436 
Conversion dateDecember 1, 2023
________________________________________

(1)Represents conversion price and conversion rate, as applicable, as of June 30, 2023, taking into account any applicable de minimis adjustments that will be made on the conversion date.

Unsecured Notes
 
We issued certain unsecured notes (each issuance of which is referred to herein using the “defined term” set forth under the “Unsecured Notes” column of the table below and collectively referred to as the “Unsecured Notes”), that pay interest semi-annually and all principal amounts are due upon maturity. Each of the Unsecured Notes may be redeemed in whole or in part at any time at our option at a redemption price equal to par plus a “make whole” premium, if applicable, as determined pursuant to the indentures governing each of the Unsecured Notes, plus any accrued and unpaid interest. Certain key terms related to the features for the Unsecured Notes as of June 30, 2023 are listed below.
(dollar amounts in millions)
Unsecured Notes		Aggregate Principal Amount IssuedInterest RateOriginal Issuance DateMaturity Date
2024 Notes$900 4.200%June 10, 2019June 10, 2024
March 2025 Notes$600 4.250%January 11, 2018March 1, 2025
July 2025 Notes$1,250 3.250%January 15, 2020July 15, 2025
January 2026 Notes$1,150 3.875%July 15, 2020January 15, 2026
July 2026 Notes$1,000 2.150%January 13, 2021July 15, 2026
2027 Notes$500 2.875%January 13, 2022June 15, 2027
2028 Notes$1,250 2.875%June 10, 2021June 15, 2028
2031 Notes$700 3.200%November 4, 2021November 15, 2031

In February 2023, the $750 million in aggregate principal amount of unsecured notes that matured on February 10, 2023 (the “2023 Notes”) were redeemed at par plus accrued and unpaid interest for a total redemption price of approximately $763 million. The 2023 Notes bore interest at a rate of 3.500% per annum, payable semi-annually.

See Note 5 to our consolidated financial statements for the three and six months ended June 30, 2023 for more information on our debt obligations.

As of June 30, 2023, we were in compliance in all material respects with the terms of the 2024 Convertible Notes Indenture and the indentures governing the Unsecured Notes.

The 2024 Convertible Notes and the Unsecured Notes are our senior unsecured obligations and rank senior in right of payment to any future indebtedness that is expressly subordinated in right of payment to the 2024 Convertible Notes and the Unsecured Notes; equal in right of payment to our existing and future unsecured indebtedness that is not expressly subordinated; effectively junior in right of payment to any of our secured indebtedness (including existing unsecured indebtedness that we later secure) to the extent of the value of the assets securing such indebtedness; and structurally junior to all existing and future indebtedness (including trade payables) incurred by our subsidiaries, financing vehicles or similar facilities.
Bank Relationships And Recent Strain On Banking System [Member]                      
General Description of Registrant [Abstract]                      
Risk [Text Block]                     Our business is dependent on bank relationships and recent strain on the banking system may adversely impact us.The financial markets recently have encountered volatility associated with concerns about the balance sheets of banks, especially small and regional banks who may have significant losses associated with investments that make it difficult to fund demands to withdraw deposits and other liquidity needs. Although the federal government has assisted some of these banks and protected depositors, uncertainty remains. Our business is dependent on bank relationships and we are proactively monitoring the financial health of such bank relationships. Continued strain on the banking system may adversely impact our business, financial condition and results of operations.
Revolving Funding Facility [Member]                      
Capital Stock, Long-Term Debt, and Other Securities [Abstract]                      
Long Term Debt, Title [Text Block]                     Revolving Funding Facility
Long Term Debt, Structuring [Text Block]                     We and our consolidated subsidiary, Ares Capital CP Funding LLC (“Ares Capital CP”), are party to a revolving funding facility (as amended, the “Revolving Funding Facility”), that allows Ares Capital CP to borrow up to $1.8 billion at any one time outstanding. The Revolving Funding Facility is secured by all of the assets held by, and the membership interest in, Ares Capital CP. The end of the reinvestment period and the stated maturity date for the Revolving Funding Facility are December 29, 2024 and December 29, 2026, respectively. The interest rate charged on the Revolving Funding Facility is based on SOFR plus a credit spread adjustment of 0.10% or a “base rate” (as defined in the agreements governing the Revolving Funding Facility) plus an applicable spread of 1.90% per annum. Ares Capital CP is also required to pay a commitment fee of between 0.50% and 1.25% per annum depending on the size of the unused portion of the Revolving Funding Facility. As of June 30, 2023, there was $850 million outstanding under the Revolving Funding Facility and we and Ares Capital CP were in compliance in all material respects with the terms of the Revolving Funding Facility.
SMBC Funding Facility [Member]                      
Capital Stock, Long-Term Debt, and Other Securities [Abstract]                      
Long Term Debt, Title [Text Block]                     SMBC Funding Facility
Long Term Debt, Structuring [Text Block]                     We and our consolidated subsidiary, Ares Capital JB Funding LLC (“ACJB”), are party to a revolving funding facility (as amended, the “SMBC Funding Facility”), with ACJB, as the borrower, and Sumitomo Mitsui Banking Corporation, as the administrative agent and collateral agent, that allows ACJB to borrow up to $800 million at any one time outstanding. The SMBC Funding Facility also provides for a feature that allows ACJB, subject to receiving certain consents, to increase the overall size of the SMBC Funding Facility to $1.0 billion. The SMBC Funding Facility is secured by all of the assets held by ACJB. The end of the reinvestment period and the stated maturity date for the SMBC Funding Facility are May 28, 2024 and May 28, 2026, respectively. The reinvestment period and the stated maturity date are both subject to two one-year extensions by mutual agreement. The interest rate charged on the SMBC Funding Facility is based on an applicable spread of either 1.75% or 2.00% over one month SOFR plus a credit spread adjustment of 0.10%, or 0.75% or 1.00% over a “base rate” (as defined in the agreements governing the SMBC Funding Facility), in each case, determined monthly based on the amount of the average borrowings outstanding under the SMBC Funding Facility. As of June 30, 2023, the applicable spread in effect was 1.75%. ACJB is also required to pay a commitment fee of between 0.50% and 1.00% per annum depending on the size of the unused portion of the SMBC Funding Facility. As of June 30, 2023, there was $401 million outstanding under the SMBC Funding Facility and we and ACJB were in compliance in all material respects with the terms of the SMBC Funding Facility.
BNP Funding Facility [Member]                      
Capital Stock, Long-Term Debt, and Other Securities [Abstract]                      
Long Term Debt, Title [Text Block]                     BNP Funding Facility
Long Term Debt, Structuring [Text Block]                     We and our consolidated subsidiary, ARCC FB Funding LLC (“AFB”), are party to a revolving funding facility (as amended, the “BNP Funding Facility”) with AFB, as the borrower, and BNP Paribas, as the administrative agent and lender, that allows AFB to borrow up to $790 million at any one time outstanding. The BNP Funding Facility is secured by all of the assets held by AFB. The end of the reinvestment period and the stated maturity date for the BNP Funding Facility are April 20, 2026 and April 20, 2028, respectively. The reinvestment period and the stated maturity date are both subject to a one-year extension by mutual agreement. As of June 30, 2023, the interest rate charged on the BNP Funding Facility was based on three month SOFR, or a “base rate” (as defined in the agreements governing the BNP Funding Facility) plus a margin of (i) 2.80% during the reinvestment period and (ii) 3.30% following the reinvestment period. AFB is required to pay a commitment fee of between 0.00% and 1.25% per annum depending on the size of the unused portion of the BNP Funding Facility. As of June 30, 2023, there was $475 million outstanding under the BNP Funding Facility and we and AFB were in compliance in all material respects with the terms of the BNP Funding Facility.
2024 Convertible Notes [Member]                      
Capital Stock, Long-Term Debt, and Other Securities [Abstract]                      
Long Term Debt, Title [Text Block]                     2024 Convertible Notes
Long Term Debt, Structuring [Text Block]                     We have issued $403 million in aggregate principal amount of unsecured convertible notes that mature on March 1, 2024 (the “2024 Convertible Notes”) unless previously converted or repurchased in accordance with its terms. We do not have the right to redeem the 2024 Convertible Notes prior to maturity. The 2024 Convertible Notes bear interest at a rate of 4.625% per annum, payable semi-annually. In certain circumstances, assuming the conversion date below has not already passed, the 2024 Convertible Notes will be convertible into cash, shares of our common stock or a combination of cash and shares of our common stock, at our election, at the conversion rate (listed below as of June 30, 2023) subject to customary anti-dilution adjustments and the requirements of the indenture (the “2024 Convertible Notes Indenture”). Prior to the close of business on the business day immediately preceding the conversion date (listed below), holders may convert their 2024 Convertible Notes only under certain circumstances set forth in the 2024 Convertible Notes Indenture. On or after the conversion date until the close of business on the second scheduled trading day immediately preceding the maturity date for the 2024 Convertible Notes, holders may convert their 2024 Convertible Notes at any time. In addition, if we engage in certain corporate events as described in the 2024 Convertible Notes Indenture, holders of the 2024 Convertible Notes may require us to repurchase for cash all or part of the 2024 Convertible Notes at a repurchase price equal to 100% of the principal amount of the 2024 Convertible Notes to be repurchased, plus accrued and unpaid interest through, but excluding, the required repurchase date.
Revolving Credit Facility [Member]                      
Capital Stock, Long-Term Debt, and Other Securities [Abstract]                      
Long Term Debt, Title [Text Block]                     Revolving Credit Facility
Long Term Debt, Structuring [Text Block]                     We are party to a senior secured revolving credit facility (as amended and restated, the “Revolving Credit Facility”), that allows us to borrow up to $4.8 billion at any one time outstanding. The Revolving Credit Facility consists of a $1.1 billion term loan tranche and a $3.7 billion revolving tranche. For $908 million of the term loan tranche, the stated maturity date is April 19, 2028. For $116 million of the term loan tranche, the stated maturity date is March 31, 2027. For $28 million of the term loan tranche, the stated maturity date is March 31, 2026. For the remaining $50 million of the term loan tranche, the stated maturity date is March 30, 2025. For $2.9 billion of the revolving tranche, the end of the revolving period and the stated maturity date are April 19, 2027 and April 19, 2028, respectively. For $494 million of the revolving tranche, the end of the revolving period and the stated maturity date are March 31, 2026 and March 31, 2027, respectively. For $107 million of the revolving tranche, the end of the revolving period and the stated maturity date are March 31, 2025 and March 31, 2026, respectively. For the remaining $150 million of the revolving tranche, the end of the revolving period and the stated maturity date are March 30, 2024 and March 30, 2025, respectively. The Revolving Credit Facility also provides for a feature that allows us, under certain circumstances, to increase the overall size of the Revolving Credit Facility to a maximum of $7.1 billion. The interest rate charged on the Revolving Credit Facility is based on SOFR (or an alternative rate of interest for certain loans, commitments and/or other extensions of credit denominated in Sterling, Canadian Dollars, Euros and certain other foreign currencies) plus a credit spread adjustment of 0.10% and an applicable spread of either 1.75% or 1.875% or an “alternate base rate” (as defined in the agreements governing the Revolving Credit Facility) plus a credit spread adjustment of 0.10% and an applicable spread of either 0.75% or 0.875%, in each case, determined monthly based on the total amount of the borrowing base relative to the sum of (i) the greater of (a) the aggregate amount of revolving exposure and term loans outstanding under the Revolving Credit Facility and (b) 85% of the total commitments of the Revolving Credit Facility (or, if higher, the total revolving exposure) plus (ii) other debt, if any, secured by the same collateral as the Revolving Credit Facility. As of June 30, 2023, the applicable spread in effect was 1.75%. We are also required to pay a letter of credit fee of either 2.00% or 2.125% per annum on letters of credit issued, determined monthly based on the total amount of the borrowing base relative to the total commitments of the Revolving Credit Facility and other debt, if any, secured by the same collateral as the Revolving Credit Facility. Additionally, we are required to pay a commitment fee of 0.375% per annum on any unused portion of the Revolving Credit Facility. As of June 30, 2023, there was $1.9 billion outstanding under the Revolving Credit Facility and we were in compliance in all material respects with the terms of the Revolving Credit Facility.
Unsecured Notes [Member]                      
Capital Stock, Long-Term Debt, and Other Securities [Abstract]                      
Long Term Debt, Title [Text Block]                     Unsecured Notes
Long Term Debt, Structuring [Text Block]                     We issued certain unsecured notes (each issuance of which is referred to herein using the “defined term” set forth under the “Unsecured Notes” column of the table below and collectively referred to as the “Unsecured Notes”), that pay interest semi-annually and all principal amounts are due upon maturity. Each of the Unsecured Notes may be redeemed in whole or in part at any time at our option at a redemption price equal to par plus a “make whole” premium, if applicable, as determined pursuant to the indentures governing each of the Unsecured Notes, plus any accrued and unpaid interest. Certain key terms related to the features for the Unsecured Notes as of June 30, 2023 are listed below.
(dollar amounts in millions)
Unsecured Notes		Aggregate Principal Amount IssuedInterest RateOriginal Issuance DateMaturity Date
2024 Notes$900 4.200%June 10, 2019June 10, 2024
March 2025 Notes$600 4.250%January 11, 2018March 1, 2025
July 2025 Notes$1,250 3.250%January 15, 2020July 15, 2025
January 2026 Notes$1,150 3.875%July 15, 2020January 15, 2026
July 2026 Notes$1,000 2.150%January 13, 2021July 15, 2026
2027 Notes$500 2.875%January 13, 2022June 15, 2027
2028 Notes$1,250 2.875%June 10, 2021June 15, 2028
2031 Notes$700 3.200%November 4, 2021November 15, 2031

In February 2023, the $750 million in aggregate principal amount of unsecured notes that matured on February 10, 2023 (the “2023 Notes”) were redeemed at par plus accrued and unpaid interest for a total redemption price of approximately $763 million. The 2023 Notes bore interest at a rate of 3.500% per annum, payable semi-annually.

See Note 5 to our consolidated financial statements for the three and six months ended June 30, 2023 for more information on our debt obligations.

As of June 30, 2023, we were in compliance in all material respects with the terms of the 2024 Convertible Notes Indenture and the indentures governing the Unsecured Notes.

The 2024 Convertible Notes and the Unsecured Notes are our senior unsecured obligations and rank senior in right of payment to any future indebtedness that is expressly subordinated in right of payment to the 2024 Convertible Notes and the Unsecured Notes; equal in right of payment to our existing and future unsecured indebtedness that is not expressly subordinated; effectively junior in right of payment to any of our secured indebtedness (including existing unsecured indebtedness that we later secure) to the extent of the value of the assets securing such indebtedness; and structurally junior to all existing and future indebtedness (including trade payables) incurred by our subsidiaries, financing vehicles or similar facilities.
v3.23.2
SIGNIFICANT ACCOUNTING POLICIES (Policies)
 6 Months Ended
Jun. 30, 2023
Accounting Policies [Abstract]  
Basis of Presentation
Basis of Presentation
 
The accompanying consolidated financial statements have been prepared on the accrual basis of accounting in conformity with U.S. generally accepted accounting principles (“GAAP”), and include the accounts of the Company and its consolidated subsidiaries. The Company is an investment company following accounting and reporting guidance in Accounting Standards Codification (“ASC”) 946, Financial Services—Investment Companies. The consolidated financial statements reflect all adjustments and reclassifications that, in the opinion of management, are necessary for the fair presentation of the results of operations and financial condition as of and for the periods presented. All significant intercompany balances and transactions have been eliminated.

Interim financial statements are prepared in accordance with GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Articles 6 or 10 of Regulation S-X. In the opinion of management, all adjustments, consisting solely of normal recurring accruals considered necessary for the fair presentation of financial statements for the interim period presented, have been included. The current period’s results of operations will not necessarily be indicative of results that ultimately may be achieved for the fiscal year ending December 31, 2023.

The Company reclassified certain industry groupings of its portfolio companies presented in the accompanying consolidated financial statements as of December 31, 2022 to align with the recently updated Global Industry Classification Standards (“GICS”), where applicable. These reclassifications had no impact on the prior period’s consolidated balance sheet.
Cash, Cash Equivalents
Cash, Cash Equivalents and Restricted Cash
 
Cash and cash equivalents include funds from time to time deposited with financial institutions and short-term, liquid investments in a money market account. Cash and cash equivalents are carried at cost which approximates fair value.
Restricted Cash Restricted cash primarily relates to cash received by the Company on behalf of participating lenders as a result of the Company’s role as administrative agent for certain loans. The cash received is generally distributed to participating lenders shortly after the receipt of such cash.
Concentration of Credit Risk
Concentration of Credit Risk
 
The Company places its cash and cash equivalents with financial institutions and, at times, cash held in depository or money market accounts may exceed the Federal Deposit Insurance Corporation insured limits.
Investments
Investments
 
Investment transactions are recorded on the trade date. Realized gains or losses are measured by the difference between the net proceeds from the repayment or sale and the amortized cost basis of the investment using the specific identification method without regard to unrealized gains or losses previously recognized, and include investments charged off during the period, net of recoveries. Unrealized gains or losses primarily reflect the change in investment values, including the reversal of previously recorded unrealized gains or losses when gains or losses are realized.

Effective October 1, 2022, pursuant to Rule 2a-5 under the Investment Company Act, the Company’s board of directors designated the Company’s investment adviser as the Company’s valuation designee to perform the fair value determinations for investments held by the Company without readily available market quotations subject to the overall supervision of the Company’s board of directors.
 
Investments for which market quotations are readily available are typically valued at such market quotations. In order to validate market quotations, the Company’s investment adviser, as the valuation designee, looks at a number of factors to determine if the quotations are representative of fair value, including the source and nature of the quotations. Debt and equity securities that are not publicly traded or whose market prices are not readily available (i.e., substantially all of the Company’s investments) are valued at fair value as determined in good faith by the Company’s investment adviser, as the valuation designee, subject to the oversight of the Company’s board of directors, based on, among other things, the input of the Company’s independent third-party valuation firms that have been engaged to support the valuation of such portfolio investments at least once during a trailing 12-month period (with certain de minimis exceptions) and under a valuation policy and a consistently applied valuation process. The valuation process is conducted at the end of each fiscal quarter by the Company’s investment adviser, and a portion of the Company’s investment portfolio at fair value is subject to review by an independent third-party valuation firm each quarter. In addition, the Company’s independent registered public accounting firm obtains an understanding of, and performs select procedures relating to, the Company’s valuation process within the context of performing the Company’s integrated audit.
 
As part of the valuation process, the Company’s investment adviser may take into account the following types of factors, if relevant, in determining the fair value of the Company’s investments: the enterprise value of a portfolio company (the entire value of the portfolio company to a market participant, including the sum of the values of debt and equity securities used to capitalize the enterprise at a point in time), the nature and realizable value of any collateral, the portfolio company’s ability to make payments and its earnings and discounted cash flow, the markets in which the portfolio company does business, a comparison of the portfolio company’s securities to any similar publicly traded securities, changes in the interest rate environment and the credit markets, which may affect the price at which similar investments would trade in their principal markets and other relevant factors. When an external event such as a purchase transaction, public offering or subsequent sale occurs, the Company’s investment adviser considers the pricing indicated by the external event to corroborate the valuation.
 
Because there is not a readily available market value for most of the investments in the Company’s portfolio, substantially all of the Company’s portfolio investments are valued at fair value as determined in good faith by its investment adviser, as the valuation designee, as described herein. Due to the inherent uncertainty of determining the fair value of investments that do not have a readily available market value, the fair value of the Company’s investments may fluctuate from period to period. Additionally, the fair value of the Company’s investments may differ significantly from the values that would have been used had a ready market existed for such investments and may differ materially from the values that the Company may ultimately realize. Further, such investments are generally subject to legal and other restrictions on resale or otherwise are less liquid than publicly traded securities. If the Company was required to liquidate a portfolio investment in a forced or liquidation sale, the Company could realize significantly less than the value at which the Company has recorded it.
 
In addition, changes in the market environment and other events that may occur over the life of the investments may cause the gains or losses ultimately realized on these investments to be different than the unrealized gains or losses reflected in the valuations currently assigned.

The Company’s investment adviser, as the valuation designee, subject to the oversight of the Company’s board of directors undertakes a multi-step valuation process each quarter, as described below:

•The Company’s quarterly valuation process begins with a preliminary valuation being prepared by the investment professionals responsible for the portfolio investment in conjunction with the Company’s portfolio management and valuation team.

•Preliminary valuations are reviewed and discussed by the valuation committee of the Company’s investment adviser.

•The valuation committee of the Company’s investment adviser determines the fair value of each investment in the Company’s portfolio without a readily available market quotation in good faith based on, among other things, the input of the independent third-party valuation firms, where applicable.
 
See Note 8 for more information on the Company’s valuation process.
Interest Income Recognition
Interest Income Recognition
 
Interest income is recorded on an accrual basis and includes the accretion of discounts, amortization of premiums and payment-in-kind (“PIK”) interest. Discounts from and premiums to par value on investments purchased are accreted/amortized into interest income over the life of the respective security using the effective yield method. To the extent loans contain PIK provisions, PIK interest, computed at the contractual rate specified in each applicable agreement, is accrued and recorded as interest income and added to the principal balance of the loan. PIK interest income added to the principal balance is generally collected upon repayment of the outstanding principal. To maintain the Company’s tax status as a RIC, this non-cash source of income must be paid out to stockholders in the form of dividends for the year the income was earned, even though the Company has not yet collected the cash. The amortized cost of investments represents the original cost adjusted for any accretion of discounts, amortization of premiums and PIK interest.

Loans are generally placed on non-accrual status when principal or interest payments are past due 30 days or more or when there is reasonable doubt that principal or interest will be collected in full. Accrued and unpaid interest is generally reversed when a loan is placed on non-accrual status. Interest payments received on non-accrual loans may be recognized as income or applied to principal depending upon the Company’s judgment regarding collectability. Non-accrual loans are restored to accrual status when past due principal and interest are paid or there is no longer any reasonable doubt that such principal or interest will be collected in full and, in the Company’s judgment, are likely to remain current. The Company may make exceptions to this policy if the loan has sufficient collateral value (i.e., typically measured as enterprise value of the portfolio company) or is in the process of collection.
Dividend Income Recognition
Dividend Income Recognition 

Dividend income on preferred equity is recorded on an accrual basis to the extent that such amounts are payable by the portfolio company and are expected to be collected. Dividend income on common equity is recorded on the record date for private portfolio companies or on the ex-dividend date for publicly traded portfolio companies. To the extent a preferred equity contains PIK provisions, PIK dividends, computed at the contractual rate specified in each applicable agreement, are accrued and recorded as dividend income and added to the principal balance of the preferred equity. PIK dividends added to the principal balance are generally collected upon redemption of the equity.
Capital Structuring Service Fees and Other Income
Capital Structuring Service Fees and Other Income
 
In pursuit of the Company’s investment objective, the Company’s investment adviser seeks to provide assistance to its portfolio companies and in return the Company may receive fees for capital structuring services. These fees are fixed based on contractual terms, are generally only available to the Company as a result of the Company’s underlying investments, are normally paid at the closing of the investments, are generally non-recurring and non-refundable and are recognized as revenue when earned upon closing of the investment. The services that the Company’s investment adviser provides vary by investment, but generally include reviewing existing credit facilities, arranging bank financing, arranging equity financing, structuring financing from multiple lenders, structuring financing from multiple equity investors, restructuring existing loans, raising equity and debt capital, and providing general financial advice, which concludes upon closing of the investment. Any services of the above nature subsequent to the closing would generally generate a separate fee payable to the Company. In certain instances where the Company is invited to participate as a co-lender in a transaction and does not provide significant services in connection with the investment, a portion of loan fees paid to the Company in such situations will be deferred and amortized over the contractual life of the loan.

Other income includes amendment fees that are fixed based on contractual terms and are generally non-recurring and
non-refundable and are recognized as revenue when earned upon closing of the related transaction. Other income also includes fees for management and consulting services, agency services, loan guarantees, commitments, and other services rendered by the Company to portfolio companies. Such fees are fixed based on contractual terms and are recognized as income as services are rendered.
Foreign Currency Translation
Foreign Currency Translation
 
The Company’s books and records are maintained in U.S. dollars. Any foreign currency amounts are translated into U.S. dollars on the following basis:
 
(1)Fair value of investment securities, other assets and liabilities—at the exchange rates prevailing at the end of the period.

(2)Purchases and sales of investment securities, income and expenses—at the exchange rates prevailing on the respective dates of such transactions, income or expenses.
 
Results of operations based on changes in foreign exchange rates are separately disclosed in the statement of operations, if any. Foreign security and currency translations may involve certain considerations and risks not typically associated with investing in U.S. companies and U.S. government securities. These risks include, but are not limited to, currency fluctuations and revaluations and future adverse political, social and economic developments, which could cause investments in foreign markets to be less liquid and prices more volatile than those of comparable U.S. companies or U.S. government securities.
Derivative Instruments
Derivative Instruments
 
The Company does not utilize hedge accounting and as such values its derivatives at fair value with the unrealized gains or losses recorded in “net unrealized gains (losses) from foreign currency and other transactions” in the Company’s consolidated statement of operations.
Equity Offering Expenses
Equity Offering Expenses
 
The Company’s offering costs are charged against the proceeds from equity offerings when proceeds are received.
Debt Issuance Costs
Debt Issuance Costs
 
Debt issuance costs are amortized over the life of the related debt instrument using the straight line method or the effective yield method, depending on the type of debt instrument.
Secured Borrowings
Secured Borrowings

The Company follows the guidance in ASC Topic 860, Transfers and Servicing (“ASC Topic 860”), when accounting for participations and other partial loan sales. Certain loan sales do not qualify for sale accounting under ASC Topic 860
because these sales do not meet the definition of a “participating interest,” as defined in the guidance, in order for sale treatment to be allowed. Participations or other partial loan sales which do not meet the definition of a participating interest or which are not eligible for sale accounting remain as an investment on the consolidated balance sheet as required under GAAP and the proceeds are recorded as a secured borrowing. Secured borrowings are carried at fair value.
Leases Leases
The Company is obligated under a number of operating leases pursuant to which it is leasing office facilities from third parties with remaining terms ranging from approximately one to four years. Such operating leases are included in operating lease right-of-use (“ROU”) assets and operating lease liabilities in the accompanying consolidated balance sheets. The Company does not have any finance leases.

The ROU asset represents the Company’s right to use an underlying asset for the lease term and the operating lease liability represents the Company’s obligation to make lease payments arising from such lease. Operating lease ROU assets and liabilities are recognized at the commencement date based on the present value of lease payments over the remaining lease term. The Company’s leases do not provide an implicit discount rate, and as such the Company uses its weighted average borrowing rate based on the information available at the commencement date in determining the present value of the remaining lease payments. Lease expense is recognized on a straight-line basis over the remaining lease term. The Company has elected as a practical expedient to treat non-lease components as part of the lease as these components are not significant when compared to the lease component.
Income Taxes
Income Taxes
 
The Company has elected to be treated as a RIC under the Code and operates in a manner so as to qualify for the tax treatment applicable to RICs. To qualify as a RIC, the Company must, among other requirements, meet certain source-of- income and asset diversification requirements and timely distribute to its stockholders at least 90% of its investment company taxable income, as defined by the Code, for each year. The Company has made and intends to continue to make the requisite distributions to its stockholders, which will generally relieve the Company from U.S. federal corporate-level income taxes.
 
Depending on the level of taxable income earned in a tax year, the Company may choose to carry forward taxable income in excess of current year dividend distributions from such current year taxable income into the next tax year and pay a 4% excise tax on such income, as required. To the extent that the Company determines that its estimated current year taxable income will be in excess of estimated dividend distributions for the current year from such income, the Company accrues excise tax, if any, on estimated excess taxable income as such taxable income is earned.
 
The Company may hold certain portfolio company investments through consolidated taxable subsidiaries. Such subsidiaries may be subject to U.S. federal and state corporate-level income taxes. These consolidated subsidiaries recognize deferred tax assets and liabilities for the estimated future tax effects attributable to temporary differences between the tax basis of certain assets and liabilities and the reported amounts included in the accompanying consolidated balance sheet using the applicable statutory tax rates in effect for the year in which any such temporary differences are expected to reverse.
Dividends to Common Stockholders
Dividends to Common Stockholders
 
Dividends and distributions to common stockholders are recorded on the ex-dividend date. The amount to be paid out as a dividend is determined by the Company’s board of directors each quarter and is generally based upon the earnings estimated by management and considers the level of undistributed taxable income carried forward from the prior year for distribution in the current year. Net realized capital gains, if any, are generally distributed, although the Company may decide to retain such capital gains for investment.
 
The Company has adopted a dividend reinvestment plan that provides for reinvestment of any distributions the Company declares in cash on behalf of its stockholders, unless a stockholder elects to receive cash. As a result, if the Company’s board of directors authorizes, and the Company declares, a cash dividend, then the Company’s stockholders who have not “opted out” of the Company’s dividend reinvestment plan will have their cash dividends automatically reinvested in additional shares of the Company’s common stock, rather than receiving the cash dividend. The Company may use newly issued shares to implement the dividend reinvestment plan or, if the Company is otherwise permitted under applicable law to purchase such shares, the Company may purchase shares in the open market in connection with the Company’s obligations under the dividend reinvestment plan.
Use of Estimates in the Preparation of Financial Statements
Use of Estimates in the Preparation of Consolidated Financial Statements
 
The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of actual and contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of income or loss and expenses during the reporting period. Actual results could differ from those estimates. Significant estimates include the valuation of investments.
Recent Accounting Pronouncements
Recent Accounting Pronouncements

The Company considers the applicability and impact of all accounting standard updates (“ASU”) issued by the Financial Accounting Standards Board. The Company has assessed currently issued ASUs and has determined that they are not applicable or expected to have minimal impact on its consolidated financial statements.
v3.23.2
SIGNIFICANT ACCOUNTING POLICIES (Tables)
 6 Months Ended
Jun. 30, 2023
Accounting Policies [Abstract]  
Reconciliation of Cash, Cash Equivalents and Restricted Cash
The following table provides a reconciliation of cash, cash equivalents and restricted cash in the consolidated balance sheet to the total amount shown at the end of the applicable period in the consolidated statement of cash flows:

 As of
 June 30, 2023December 31, 2022
Cash and cash equivalents$411 $303 
Restricted cash42 34 
Total cash, cash equivalents and restricted cash shown in the consolidated statement of cash flows$453 $337 
Reconciliation of Cash, Cash Equivalents and Restricted Cash
The following table provides a reconciliation of cash, cash equivalents and restricted cash in the consolidated balance sheet to the total amount shown at the end of the applicable period in the consolidated statement of cash flows:

 As of
 June 30, 2023December 31, 2022
Cash and cash equivalents$411 $303 
Restricted cash42 34 
Total cash, cash equivalents and restricted cash shown in the consolidated statement of cash flows$453 $337 
v3.23.2
AGREEMENTS (Tables)
 6 Months Ended
Jun. 30, 2023
Investment Company [Abstract]  
Schedule of Base Management Fees, Income Based Fees, and Capital Gains Incentive Fees
The base management fees, income based fees and capital gains incentive fees for the three and six months ended June 30, 2023 and 2022 were as follows:

For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Base management fees$79 $75 $158 $148 
Income based fees$79 $57 $155 $108 
Capital gains incentive fees(1)$4 $(29)$(2)$(27)
________________________________________

(1)Calculated in accordance with GAAP as discussed below.
v3.23.2
INVESTMENTS (Tables)
 6 Months Ended
Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]  
Schedule of Investments
As of June 30, 2023 and December 31, 2022, investments consisted of the following:

 As of
 June 30, 2023December 31, 2022
Amortized Cost(1)Fair ValueAmortized Cost(1)Fair Value
First lien senior secured loans(2)$9,304 $8,972 $9,684 $9,373 
Second lien senior secured loans4,160 3,879 4,218 3,934 
Subordinated certificates of the SDLP(3)1,289 1,237 1,274 1,249 
Senior subordinated loans1,147 1,054 1,163 1,079 
Preferred equity2,161 2,140 2,095 2,027 
Ivy Hill Asset Management, L.P.(4)1,968 2,151 2,048 2,201 
Other equity1,657 2,063 1,561 1,917 
Total$21,686 $21,496 $22,043 $21,780 
________________________________________

(1)The amortized cost represents the original cost adjusted for any accretion of discounts, amortization of premiums and PIK interest or dividends.
    
(2)First lien senior secured loans include certain loans that the Company classifies as “unitranche” loans. The total amortized cost and fair value of the loans that the Company classified as “unitranche” loans were $4,875 and $4,746 respectively, as of June 30, 2023, and $4,983 and $4,841, respectively, as of December 31, 2022.
(3)The proceeds from these certificates were applied to co-investments with Varagon Capital Partners (“Varagon”) and its clients to fund first lien senior secured loans to 21 and 22 different borrowers as of June 30, 2023 and December 31, 2022, respectively.

(4)Includes the Company’s subordinated loan and equity investments in IHAM (as defined below), as applicable.
  
The Company uses GICS for classifying the industry groupings of its portfolio companies. The industrial and geographic compositions of the Company’s portfolio at fair value as of June 30, 2023 and December 31, 2022 were as follows:
 As of
June 30, 2023December 31, 2022
Industry
Software and Services22.0 %21.9 %
Financial Services(1)13.0 13.3 
Health Care Services11.3 10.8 
Commercial and Professional Services9.7 9.5 
Investment Funds and Vehicles(2)5.9 6.0 
Power Generation4.8 4.5 
Insurance Services4.8 5.2 
Consumer Services3.7 4.2 
Consumer Durables and Apparel3.7 3.7 
Capital Goods2.9 3.6 
Media and Entertainment2.4 2.1 
Food and Beverage2.1 2.0 
Retailing and Distribution2.1 2.2 
Energy2.0 2.0 
Automobiles and Components2.0 2.1 
Other7.6 6.9 
Total100.0 %100.0 %
________________________________________

(1)Includes the Company’s investment in IHAM.

(2)Includes the Company’s investment in the SDLP (as defined below), which had made first lien senior secured loans to 21 and 22 different borrowers as of June 30, 2023 and December 31, 2022, respectively. The portfolio companies in the SDLP are in industries similar to the companies in the Company’s portfolio.

 As of
June 30, 2023December 31, 2022
Geographic Region
West(1)24.9 %24.5 %
Midwest23.9 23.9 
Southeast18.3 17.1 
Northeast(2)14.3 14.0 
Mid-Atlantic13.8 14.9 
International4.8 5.6 
Total100.0 %100.0 %
________________________________________

(1)Includes the Company’s investment in the SDLP, which represented 5.8% and 5.7% of the total investment portfolio at fair value as of June 30, 2023 and December 31, 2022, respectively.
(2)Includes the Company’s investment in IHAM, which represented 10.0% and 10.1% of the total investment portfolio at fair value as of June 30, 2023 and December 31, 2022, respectively.Below is a summary of the SDLP’s portfolio.
As of
June 30, 2023December 31, 2022
Total first lien senior secured loans(1)(2)$5,113 $5,174 
Largest loan to a single borrower(1)$373 $377 
Total of five largest loans to borrowers(1)$1,654 $1,631 
Number of borrowers in the SDLP21 22 
Commitments to fund delayed draw loans(3)$280 $294 
___________________________________________________________________________

(1)At principal amount.

(2)First lien senior secured loans include certain loans that the SDLP classifies as “unitranche” loans. As of June 30, 2023 and December 31, 2022, the total principal amount of loans in the SDLP portfolio that the SDLP classified as “unitranche” loans was $4,065 and $4,108, respectively.

(3)As discussed above, these commitments have been approved by the investment committee of the SDLP.

Pursuant to Rule 4-08(g) of Regulation S-X, selected financial information of the SDLP, in conformity with GAAP, as of June 30, 2023 and December 31, 2022 and for the three and six months ended June 30, 2023 and 2022 are presented below:

As of
June 30, 2023December 31, 2022
Selected Balance Sheet Information:
Investments at fair value (amortized cost of $5,096 and $5,166, respectively)
$4,799 $4,958 
Other assets329 150 
Total assets$5,128 $5,108 
Senior notes$3,584 $3,538 
Intermediate funding notes134 132 
Other liabilities129 110 
Total liabilities3,847 3,780 
Subordinated certificates and members’ capital1,281 1,328 
Total liabilities and members’ capital$5,128 $5,108 
For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Selected Statement of Operations Information:
Total investment income$140 $77 $276 $149 
Interest expense72 30 141 54 
Other expenses6 4 12 9 
Total expenses78 34 153 63 
Net investment income62 43 123 86 
Net realized and unrealized losses on investments(17)(12)(85)(15)
Net increase in members’ capital resulting from operations$45 $31 $38 $71 
The amortized cost and fair value of the Company’s investment in IHAM as of June 30, 2023 and December 31, 2022 were as follows:
As of
June 30, 2023December 31, 2022
Amortized CostFair ValueAmortized CostFair Value
Subordinated loan
$267 $267 $500 $500 
Equity
1,701 1,884 1,548 1,701 
Total investment in IHAM$1,968 $2,151 $2,048 $2,201 
Summary of Funded Capital and Unfunded Capital Commitments of the SDLP Below is a summary of the funded capital and unfunded capital commitments of the SDLP.
 As of
June 30, 2023December 31, 2022
Total capital funded to the SDLP(1)$5,191 $5,127 
Total capital funded to the SDLP by the Company(1)$1,289 $1,274 
Total unfunded capital commitments to the SDLP(2)$280 $294 
Total unfunded capital commitments to the SDLP by the Company(2)$65 $68 
___________________________________________________________________________
(1)At principal amount.

(2)These commitments to fund delayed draw loans have been approved by the investment committee of the SDLP and will be funded if and when conditions to funding such delayed draw loans are met.
The amortized cost and fair value of the SDLP Certificates held by the Company as of June 30, 2023 and December 31, 2022 were as follows:
As of
June 30, 2023December 31, 2022
Amortized CostFair ValueAmortized CostFair Value
SDLP Certificates$1,289 $1,237 $1,274 $1,249 
The Company’s yield on its investment in the SDLP Certificates at amortized cost and fair value as of June 30, 2023 and December 31, 2022 were as follows:
 As of
 June 30, 2023December 31, 2022
 Amortized CostFair ValueAmortized CostFair Value
Yield on the SDLP Certificates13.5 %14.1 %13.5 %13.8 %
The yields at amortized cost and fair value of the Company’s investments in IHAM as of June 30, 2023 and December 31, 2022 were as follows:
 As of
 June 30, 2023December 31, 2022
 Amortized CostFair ValueAmortized CostFair Value
Subordinated loan
11.6 %11.6 %11.0 %11.0 %
Equity(1)
14.1 %12.7 %14.2 %12.9 %
_______________________________________________________________________________

(1)Represents the yield on the Company’s equity investment in IHAM, which is computed as (a) the annualized amount of the dividend received by the Company related to the Company’s equity investment in IHAM during the most recent quarter end, divided by (b) the amortized cost or fair value of the Company’s equity investment in IHAM, as applicable.
Summary of Dividend and Interest Income
The interest income from the Company’s investment in the SDLP Certificates and capital structuring service and other fees earned for the three and six months ended June 30, 2023 and 2022 were as follows:

For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Interest income
$43 $34 $86 $67 
Capital structuring service and other fees
$6 $3 $7 $8 
The interest income and dividend income that the Company earned from IHAM for the three and six months ended June 30, 2023 and 2022 were as follows:

For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Interest income
$10 $3 $23 $3 
Dividend income
$60 $52 $117 $95 
Summary of Selected Financial Information
Pursuant to Rule 4-08(g) of Regulation S-X, selected financial information of IHAM, in conformity with GAAP, as of June 30, 2023 and December 31, 2022 and for the three and six months ended June 30, 2023 and 2022 are presented below.

In conformity with GAAP, IHAM is required to consolidate entities in which IHAM has a direct or indirect controlling financial interest based on either a variable interest model or voting interest model, which include certain of the IHAM Vehicles (the “Consolidated IHAM Vehicles”). As such, for GAAP purposes only, IHAM consolidates (a) entities in which it holds a majority voting interest or has majority ownership and control over the operational, financial and investing decisions of that entity and (b) entities that it concludes are variable interest entities in which IHAM has more than insignificant economic interest and power to direct the activities that most significantly impact the entities, and for which IHAM is deemed to be the primary beneficiary.

When IHAM consolidates an IHAM Vehicle for GAAP purposes only, IHAM reflects the assets, liabilities, revenues and expenses of the Consolidated IHAM Vehicles on a gross basis, including the economic interests held by third-party investors in the Consolidated IHAM Vehicles as debt obligations, subordinated notes or non-controlling interests, in the consolidated IHAM financials below. All of the revenues earned by IHAM as the investment manager of the IHAM Consolidated Vehicles are eliminated in GAAP consolidation. However, because the eliminated amounts are earned from and funded by third-party investors, the GAAP consolidation of an IHAM Vehicle does not impact the net income or loss attributable to IHAM. As a result, the Company believes an assessment of IHAM's business and the impact to the Company’s investment in IHAM is best viewed on a stand-alone basis as reflected in the first column in the tables below.
As of June 30, 2023
IHAMConsolidated IHAM Vehicles(1)EliminationsConsolidated
Selected Balance Sheet Information:
Assets
Investments at fair value(2)$2,427 $9,452 $(2,403)$9,476 
Cash and cash equivalents6 560 — 566 
Other assets70 94 (66)98 
Total assets$2,503 $10,106 $(2,469)$10,140 
Liabilities
Debt$452 $7,160 $— $7,612 
Subordinated note from ARCC267 — — 267 
Subordinated notes(3)— 1,295 (1,014)281 
Other liabilities16 334 (15)335 
Total liabilities735 8,789 (1,029)8,495 
Equity
Contributed capital1,700 — — 1,700 
Accumulated earnings84 — — 84 
Net unrealized losses on investments and foreign currency transactions(16)— — (16)
Non-controlling interests in Consolidated IHAM Vehicles(4)
— 1,317 (1,440)(123)
Total equity1,768 1,317 (1,440)1,645 
Total liabilities and equity$2,503 $10,106 $(2,469)$10,140 

As of December 31, 2022
IHAMConsolidated IHAM Vehicles(1)EliminationsConsolidated
Selected Balance Sheet Information:
Assets
Investments at fair value(2)$2,340 $8,973 $(2,315)$8,998 
Cash and cash equivalents5 499 — 504 
Other assets56 94 (51)99 
Total assets$2,401 $9,566 $(2,366)$9,601 
Liabilities
Debt$308 $6,968 $— $7,276 
Subordinated note from ARCC500 — — 500 
Subordinated notes(3)— 1,374 (1,093)281 
Other liabilities18 129 (15)132 
Total liabilities826 8,471 (1,108)8,189 
Equity
Contributed capital1,547 — — 1,547 
Accumulated earnings61 — — 61 
Net unrealized losses on investments and foreign currency transactions(33)— — (33)
Non-controlling interests in Consolidated IHAM Vehicles(4)
— 1,095 (1,258)(163)
Total equity1,575 1,095 (1,258)1,412 
Total liabilities and equity$2,401 $9,566 $(2,366)$9,601 
________________________________________
(1)Consolidated for GAAP purposes only.

(2)The determination of such fair value is determined in accordance with IHAM’s valuation procedures (separate and apart from the Company’s valuation process described elsewhere herein). The amortized cost of IHAM’s total investments as of June 30, 2023 and December 31, 2022 was $2,436 and $2,370, respectively. The amortized cost of the total investments of IHAM on a consolidated basis as of June 30, 2023 and December 31, 2022 was $9,730 and $9,306, respectively.

(3)Subordinated notes generally represent the most junior capital in certain of the Consolidated IHAM Vehicles and effectively represent equity in such vehicles.

(4)Non-controlling interests in Consolidated IHAM Vehicles includes net unrealized depreciation in the Consolidated IHAM Vehicles of $278 and $309 as of June 30, 2023 and December 31, 2022, respectively.


For the Three Months Ended June 30, 2023
IHAMConsolidated IHAM Vehicles(1)EliminationsConsolidated
Selected Statement of Operations Information:
Revenues
Investment income$95 $273 $(94)$274 
Management fees and other income13 2 (13)2 
Total revenues108 275 (107)276 
Expenses
Interest expense16 143 — 159 
Distributions to subordinated notes— 57 (46)11 
Management fees and other expenses4 18 (13)9 
Total expenses20 218 (59)179 
Net operating income88 57 (48)97 
Net realized gains on investments and other transactions— 7 — 7 
Net unrealized gains on investments and other transactions3 8 (6)5 
Total net realized and unrealized gains on investments and other transactions3 15 (6)12 
Net income91 72 (54)109 
Less: Net income attributable to non-controlling interests in Consolidated IHAM Vehicles— 72 (54)18 
Net income attributable to Ivy Hill Asset Management, L.P.$91 $— $— $91 
For the Six Months Ended June 30, 2023
IHAMConsolidated IHAM Vehicles(1)EliminationsConsolidated
Selected Statement of Operations Information:
Revenues
Investment income$166 $528 $(164)$530 
Management fees and other income27 3 (26)4 
Total revenues193 531 (190)534 
Expenses
Interest expense$35 $272 $— 307 
Distributions to subordinated notes— 89 (70)19 
Management fees and other expenses8 36 (26)18 
Total expenses43 397 (96)344 
Net operating income150 134 (94)190 
Net realized losses on investments and other transactions(10)(10)— (20)
Net unrealized gains on investments and other transactions17 30 (19)28 
Total net realized and unrealized gains on investments and other transactions7 20 (19)8 
Net income157 154 (113)198 
Less: Net income attributable to non-controlling interests in Consolidated IHAM Vehicles— 154 (113)41 
Net income attributable to Ivy Hill Asset Management, L.P.$157 $— $— $157 

For the Three Months Ended June 30, 2022
IHAMConsolidated IHAM Vehicles(1)EliminationsConsolidated
Selected Statement of Operations Information:
Revenues
Investment income$44 $120 $(43)$121 
Management fees and other income12 1 (11)2 
Total revenues56 121 (54)123 
Expenses
Interest expense5 46 — 51 
Distributions to subordinated notes— 45 (27)18 
Management fees and other expenses3 13 (11)5 
Total expenses8 104 (38)74 
Net operating income48 17 (16)49 
Net realized gains on investments and other transactions— 1 — 1 
Net unrealized losses on investments and other transactions(13)(118)13 (118)
Total net realized and unrealized losses on investments and other transactions(13)(117)13 (117)
Net income (loss)35 (100)(3)(68)
Less: Net loss attributable to non-controlling interests in Consolidated IHAM Vehicles— (100)(3)(103)
Net income attributable to Ivy Hill Asset Management, L.P.$35 $— $— $35 
For the Six Months Ended June 30, 2022
IHAMConsolidated IHAM Vehicles(1)EliminationsConsolidated
Selected Statement of Operations Information:
Revenues
Investment income$78 $217 $(75)$220 
Management fees and other income21 2 (20)3 
Total revenues99 219 (95)223 
Expenses
Interest expense6 78 — 84 
Distributions to subordinated notes— 74 (50)24 
Management fees and other expenses7 25 (20)12 
Total expenses13 177 (70)120 
Net operating income86 42 (25)103 
Net realized gains on investments and other transactions1 1 — 2 
Net unrealized losses on investments and other transactions(24)(152)23 (153)
Total net realized and unrealized losses on investments and other transactions(23)(151)23 (151)
Net income (losses)63 (109)(2)(48)
Less: Net loss attributable to non-controlling interests in Consolidated IHAM Vehicles— (109)(2)(111)
Net income attributable to Ivy Hill Asset Management, L.P.$63 $— $— $63 
____________________________________

(1)Consolidated for GAAP purposes only.
v3.23.2
DEBT (Tables)
 6 Months Ended
Jun. 30, 2023
Debt Disclosure [Abstract]  
Schedule of Long-term Debt
The Company’s outstanding debt as of June 30, 2023 and December 31, 2022 was as follows:

 As of 
 June 30, 2023 December 31, 2022 
Total Aggregate Principal Amount Committed/ Outstanding (1)Principal Amount OutstandingCarrying ValueTotal Aggregate Principal Amount Committed/ Outstanding (1)Principal Amount OutstandingCarrying Value
Revolving Credit Facility$4,758 (2)$1,922 $1,922 $4,843 (2)$2,246 $2,246 
Revolving Funding Facility1,775 850 850 1,775 800 800 
SMBC Funding Facility800 (3)401 401 800 (3)451 451 
BNP Funding Facility790 475 475 300 245 245 
2024 Convertible Notes403 403 401 (4)403 403 399 (4)
2023 Notes— — — 750 750 750 (4)
2024 Notes900 900 899 (4)900 900 898 (4)
March 2025 Notes600 600 598 (4)600 600 597 (4)
July 2025 Notes1,250 1,250 1,256 (4)1,250 1,250 1,258 (4)
January 2026 Notes1,150 1,150 1,145 (4)1,150 1,150 1,144 (4)
July 2026 Notes1,000 1,000 992 (4)1,000 1,000 991 (4)
2027 Notes500 500 495 (4)500 500 494 (4)
2028 Notes1,250 1,250 1,247 (4)1,250 1,250 1,247 (4)
2031 Notes700 700 690 (4)700 700 690 (4)
Total$15,876 $11,401 $11,371 $16,221 $12,245 $12,210 

________________________________________

(1)Represents the total aggregate amount committed or outstanding, as applicable, under such instrument. Borrowings under the committed Revolving Credit Facility, Revolving Funding Facility, SMBC Funding Facility and BNP Funding Facility (each as defined below) are subject to borrowing base and other restrictions.

(2)Provides for a feature that allows the Company, under certain circumstances, to increase the size of the Revolving Credit Facility (as defined below) to a maximum of $7,137 and $7,265, as of June 30, 2023 and December 31, 2022, respectively.

(3)Provides for a feature that allows ACJB (as defined below), under certain circumstances, to increase the size of the SMBC Funding Facility (as defined below) to a maximum of $1,000.

(4)Represents the aggregate principal amount outstanding, less unamortized debt issuance costs and the net unaccreted/amortized discount or premium recorded upon issuance. In February 2023, the Company repaid in full the 2023 Notes (as defined below) upon their maturity.
For the three and six months ended June 30, 2023 and 2022, the components of interest and credit facility fees expense, cash paid for interest expense, average stated interest rates (i.e., rate in effect plus the spread) and average outstanding balances for the Revolving Credit Facility were as follows:

 For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Stated interest expense$34 $9 $68 $14 
Credit facility fees3 3 6 4 
Amortization of debt issuance costs2 2 4 4 
Total interest and credit facility fees expense$39 $14 $78 $22 
Cash paid for interest expense$43 $7 $75 $16 
Average stated interest rate6.84 %2.65 %6.37 %2.52 %
Average outstanding balance$1,995 $1,242 $2,114 $1,161 
For the three and six months ended June 30, 2023 and 2022, the components of interest and credit facility fees expense, cash paid for interest expense, average stated interest rates (i.e., rate in effect plus the spread) and average outstanding balances for the Revolving Funding Facility were as follows:
 For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Stated interest expense$15 $5 $28 $9 
Credit facility fees2 1 3 2 
Amortization of debt issuance costs1 1 2 2 
Total interest and credit facility fees expense$18 $7 $33 $13 
Cash paid for interest expense$15 $7 $27 $10 
Average stated interest rate7.10 %2.82 %6.75 %2.40 %
Average outstanding balance$865 $703 $838 $734 
For the three and six months ended June 30, 2023 and 2022, the components of interest and credit facility fees expense, cash paid for interest expense, average stated interest rates (i.e., rate in effect plus the spread) and average outstanding balances for the SMBC Funding Facility were as follows:
 For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Stated interest expense$7 $2 $14 $5 
Credit facility fees— 1 1 1 
Amortization of debt issuance costs— 1 1 1 
Total interest and credit facility fees expense$7 $4 $16 $7 
Cash paid for interest expense$7 $3 $14 $5 
Average stated interest rate6.94 %2.47 %6.55 %2.37 %
Average outstanding balance$413 $401 $420 $403 
For the three and six months ended June 30, 2023 and 2022, the components of interest and credit facility fees expense, cash paid for interest expense, average stated interest rates (i.e., rate in effect plus the spread) and average outstanding balances for the BNP Funding Facility were as follows:

For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Stated interest expense$8 $1 $13 $1 
Credit facility fees— 1 1 1 
Amortization of debt issuance costs1 — 1 — 
Total interest and credit facility fees expense$9 $2 $15 $2 
Cash paid for interest expense$7 $— $12 $— 
Average stated interest rate7.90 %2.83 %7.48 %3.39 %
Average outstanding balance$402 $54 $353 $49 
Certain key terms related to the convertible features for the 2024 Convertible Notes as of June 30, 2023 are listed below.
2024 Convertible Notes
Conversion premium15.0 %
Closing stock price at issuance$17.29 
Closing stock price dateMarch 5, 2019
Conversion price (1)$19.55 
Conversion rate (shares per one thousand dollar principal amount)(1)51.1436 
Conversion dateDecember 1, 2023
________________________________________

(1)Represents conversion price and conversion rate, as applicable, as of June 30, 2023, taking into account any applicable de minimis adjustments that will be made on the conversion date.
As of June 30, 2023, the components of the carrying value of the 2024 Convertible Notes, the stated interest rate and the effective interest rate were as follows:
2024 Convertible Notes
Principal amount of debt$403 
Original issue discount, net of accretion1 
Debt issuance costs, net of amortization(3)
Carrying value of debt$401 
Stated interest rate4.625 %
Effective interest rate(1)5.10 %
________________________________________

(1)The effective interest rate of the 2024 Convertible Notes is equal to the stated interest rate plus the accretion of original issue discount and amortization of debt issuance costs.

For the three and six months ended June 30, 2023 and 2022, the components of interest expense and cash paid for interest expense for the 2024 Convertible Notes, as well as any other convertible notes outstanding during the periods presented were as follows.
 For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Stated interest expense$4 $5 $9 $11 
Accretion of original issue discount— — 1 1 
Total interest expense$4 $5 $10 $12 
Cash paid for interest expense$— $— $9 $17 
Certain key terms related to the features for the Unsecured Notes as of June 30, 2023 are listed below.

Unsecured Notes		Aggregate Principal Amount IssuedInterest RateOriginal Issuance DateMaturity Date
2024 Notes$900 4.200%June 10, 2019June 10, 2024
March 2025 Notes$600 4.250%January 11, 2018March 1, 2025
July 2025 Notes$1,250 3.250%January 15, 2020July 15, 2025
January 2026 Notes$1,150 3.875%July 15, 2020January 15, 2026
July 2026 Notes$1,000 2.150%January 13, 2021July 15, 2026
2027 Notes $500 2.875%January 13, 2022June 15, 2027
2028 Notes$1,250 2.875%June 10, 2021June 15, 2028
2031 Notes$700 3.200%November 4, 2021November 15, 2031
For the three and six months ended June 30, 2023 and 2022, the components of interest expense and cash paid for interest expense for the Unsecured Notes, as well as any other unsecured notes outstanding during the periods presented are listed below.
 For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Stated interest expense$61 $67 $124 $134 
Amortization of debt issuance costs4 4 7 8 
Net amortization of original issue premium/discount(1)(2)(3)(4)
Total interest expense$64 $69 $128 $138 
Cash paid for interest expense$55 $55 $134 $134 
v3.23.2
DERIVATIVE INSTRUMENTS (Tables)
 6 Months Ended
Jun. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Derivative Instruments
Certain information related to the Company’s derivative instruments as of June 30, 2023 and December 31, 2022 is presented below.
    
 As of June 30, 2023
Derivative InstrumentNotional
Amount		Maturity DateGross Amount of Recognized AssetsGross Amount of Recognized LiabilitiesBalance Sheet
Location of Net Amounts
Foreign currency forward contract£166 7/28/2023$207 $(210)Accounts payable and other liabilities
Foreign currency forward contractCAD153 7/19/2023116 (116)Accounts payable and other liabilities
Foreign currency forward contract€132 7/28/2023146 (143)Other Assets
Foreign currency forward contractCAD87 7/28/202364 (65)Accounts payable and other liabilities
Foreign currency forward contractCAD65 7/28/202348 (49)Accounts payable and other liabilities
Foreign currency forward contractNZD59 7/28/202336 (36)Accounts payable and other liabilities
Foreign currency forward contractCAD41 7/17/202331 (31)Accounts payable and other liabilities
Foreign currency forward contractCAD36 7/10/202328 (28)Accounts payable and other liabilities
Foreign currency forward contract$33 7/28/202326 (26)Accounts payable and other liabilities
Total$702 $(704)

 As of December 31, 2022
Derivative InstrumentNotional
Amount		Maturity DateGross Amount of Recognized AssetsGross Amount of Recognized LiabilitiesBalance Sheet
Location of Net Amounts
Foreign currency forward contractCAD264 1/27/2023$195 $(196)Accounts payable and other liabilities
Foreign currency forward contractCAD242 1/18/2023178 (179)Accounts payable and other liabilities
Foreign currency forward contract€158 1/27/2023159 (169)Accounts payable and other liabilities
Foreign currency forward contract£125 1/27/2023145 (151)Accounts payable and other liabilities
Foreign currency forward contractNZD59 1/27/202334 (37)Accounts payable and other liabilities
Foreign currency forward contractCAD17 1/27/202312 (12)Accounts payable and other liabilities
Total$723 $(744)
Schedule of Net Realized and Unrealized Gains (Losses) on Derivative Instruments
Net realized gains (losses) on derivative instruments recognized by the Company for the three and six months ended June 30, 2023 and 2022 is in the following location in the consolidated statements of operations:

For the Three Months Ended June 30,For the Six Months Ended June 30,
Derivative InstrumentStatement Location2023202220232022
Foreign currency forward contractNet realized gains (losses) from foreign currency and other transactions$(3)$24 (32)$14 
Total$(3)$24 $(32)$14 

Net unrealized gains (losses) on derivative instruments recognized by the Company for the three and six months ended June 30, 2023 and 2022 is in the following location in the consolidated statements of operations:
For the Three Months Ended June 30,For the Six Months Ended June 30,
Derivative InstrumentStatement Location2023202220232022
Foreign currency forward contractNet unrealized gains (losses) from foreign currency and other transactions$(8)$7 $18 $21 
Total$(8)$7 $18 $21 
v3.23.2
COMMITMENTS AND CONTINGENCIES (Tables)
 6 Months Ended
Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Loan and Private Equity Commitments As of June 30, 2023 and December 31, 2022, the Company had the following commitments to fund various revolving and delayed draw senior secured and subordinated loans, including commitments to fund which are at (or substantially at) the Company’s discretion:
 As of
 June 30, 2023December 31, 2022
Total revolving and delayed draw loan commitments $2,449 $2,916 
Less: funded commitments(594)(526)
Total unfunded commitments1,855 2,390 
Less: commitments substantially at discretion of the Company— — 
Less: unavailable commitments due to borrowing base or other covenant restrictions(14)(13)
Total net adjusted unfunded revolving and delayed draw loan commitments$1,841 $2,377 
As of June 30, 2023 and December 31, 2022, the Company was party to agreements to fund equity investment commitments as follows:
 As of
 June 30, 2023December 31, 2022
Total equity commitments$148 $120 
Less: funded equity commitments(64)(69)
Total unfunded equity commitments84 51 
Less: equity commitments substantially at discretion of the Company(51)(51)
Total net adjusted unfunded equity commitments$33 $— 
Schedule of Components of Operating Lease Expense and Supplemental Cash Flow Information The components of operating lease expense for the three and six months ended June 30, 2023 and 2022 were as follows:
For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Operating lease costs$2 $2 $4 $4 
Less: sublease income(2)(2)(4)(4)
Total operating lease costs (1)$— $— $— $— 

________________________________________

(1)Total operating lease costs are incurred from office leases assumed as part of the Company’s acquisition of American Capital, Ltd.

Supplemental cash flow information related to operating leases for the three and six months ended June 30, 2023 and 2022 were as follows:
For the Three Months Ended June 30,For the Six Months Ended June 30,
2023202220232022
Cash paid for amounts included in the measurement of operating lease liabilities$4 $4 $8 $8 
Operating ROU assets obtained in exchange for operating lease liabilities$2 $2 $4 $4 
Summary of Supplemental Balance Sheet Information
Supplemental balance sheet information as of June 30, 2023 and December 31, 2022 related to operating leases were as follows:
As of
June 30, 2023December 31, 2022
Operating lease ROU assets$15 $20 
Operating lease liabilities$24 $31 
Weighted average remaining lease term (in years)2.93.1
Weighted average discount rate4.6 %4.2 %
Schedule of Future Minimum Lease Payments Under Operating Leases
The following table shows future minimum lease payments under the Company’s operating leases and a reconciliation to the operating lease liability as of June 30, 2023:

Amount
2023$8 
20246 
20256 
20266 
  Total lease payments26 
Less imputed interest(2)
  Total operating lease liabilities$24 
Schedule of Future Rental Payments to be Received
The following table shows future expected rental payments to be received under the Company’s subleases where the Company is the sublessor as of June 30, 2023:

Amount
2023$5 
20244 
20254 
20264 
Total$17 
v3.23.2
FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)
 6 Months Ended
Jun. 30, 2023
Fair Value Disclosures [Abstract]  
Schedule of Fair Value Measurements of Cash and Cash Equivalents, Restricted Cash, Investments, Derivatives, and Unfunded Revolving and Delayed Draw Loan Commitments
The following table presents fair value measurements of cash and cash equivalents, restricted cash, investments, derivatives and unfunded revolving and delayed draw loan commitments as of June 30, 2023:

 Fair Value Measurements Using
TotalLevel 1Level 2Level 3
Cash and cash equivalents$411 $411 $— $— 
Restricted cash$42 $42 $— $— 
Investments not measured at net asset value$21,491 $73 $661 $20,757 
Investments measured at net asset value(1)5 
 Total investments$21,496 
Derivatives$(2)$— $(2)$— 
Unfunded revolving and delayed draw loan commitments(2)$(41)$— $— $(41)
________________________________________

(1)Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet.
(2)The fair value of unfunded revolving and delayed draw loan commitments is included in “accounts payable and other liabilities” in the accompanying consolidated balance sheet.

The following table presents fair value measurements of cash and cash equivalents, restricted cash, investments, derivatives and unfunded revolving and delayed draw loan commitments as of December 31, 2022:

 Fair Value Measurements Using
TotalLevel 1Level 2Level 3
Cash and cash equivalents$303 $303 $— $— 
Restricted cash$34 $34 $— $— 
Investments not measured at net asset value$21,775 $54 $360 $21,361 
Investments measured at net asset value (1)5 
  Total investments$21,780 
Derivatives$(21)$— $(21)$— 
Unfunded revolving and delayed draw loan commitments(2)$(57)$— $— $(57)
________________________________________

(1)Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet.
(2)The fair value of unfunded revolving and delayed draw loan commitments is included in “accounts payable and other liabilities” in the accompanying consolidated balance sheet.
Schedule of Significant Unobservable Inputs
The following tables summarize the significant unobservable inputs the Company’s investment adviser used to value the majority of the Company’s investments categorized within Level 3 as of June 30, 2023 and December 31, 2022. The tables are not intended to be all-inclusive, but instead to capture the significant unobservable inputs relevant to the investment adviser’s determination of fair values.

 As of June 30, 2023
Unobservable Input
Asset CategoryFair ValuePrimary Valuation TechniquesInputEstimated Range
Weighted Average(1)
First lien senior secured loans$8,529 Yield analysisMarket yield
7.3% - 21.6%
12.6%
Second lien senior secured loans3,669 Yield analysisMarket yield
10.0% - 23.7%
15.0%
Subordinated certificates of the SDLP1,237 Discounted cash flow analysisDiscount rate
12.8% - 15.0%
13.5%
Senior subordinated loans1,045 Yield analysisMarket yield
8.0% - 20.0%
14.1%
Preferred equity2,140 EV market multiple analysisEBITDA multiple
3.0x - 40.0x
16.4x
Ivy Hill Asset Management, L.P.(2)2,151 Discounted cash flow analysisDiscount rate
12.8% - 31.1%
14.3%
Other equity1,986 EV market multiple analysisEBITDA multiple
3.6x - 40.6x
14.3x
Total investments$20,757 
________________________________________

(1)Unobservable inputs were weighted by the relative fair value of the investments.

(2)Includes the Company’s subordinated loan and equity investments in IHAM, as applicable.
 As of December 31, 2022
Unobservable Input
Asset CategoryFair ValuePrimary Valuation TechniquesInputEstimated Range
Weighted Average(1)
First lien senior secured loans$9,165 Yield analysisMarket yield
7.6% - 26.1%
12.3%
Second lien senior secured loans3,841 Yield analysisMarket yield
11.0% - 32.4%
14.9%
Subordinated certificates of the SDLP1,249 Discounted cash flow analysisDiscount rate
12.4% - 14.8%
13.5%
Senior subordinated loans1,021 Yield analysisMarket yield
8.0% - 16.3%
12.9%
Preferred equity2,023 EV market multiple analysisEBITDA multiple
2.6x - 40.6x
15.7x
Ivy Hill Asset Management, L.P.(2)2,201 Discounted cash flow analysisDiscount rate
12.9% - 25.7%
14.2%
Other equity1,861 EV market multiple analysisEBITDA multiple
2.1x - 52.1x
15.6x
Total investments$21,361 
________________________________________

(1)Unobservable inputs were weighted by the relative fair value of the investments.

(2)Includes the Company’s subordinated loan and equity investments in IHAM, as applicable.
Schedule of Changes in Investments that use Level 3 Inputs
The following tables present changes in investments that use Level 3 inputs as of and for the three and six months ended June 30, 2023:

 As of and For the Three Months Ended June 30, 2023
Balance as of March 31, 2023$20,683 
Net realized losses(68)
Net unrealized gains94 
Purchases1,167 
Sales(160)
Repayments(932)
PIK interest and dividends100 
Net accretion of discount on securities2 
Net transfers in and/or out of Level 3(129)
Balance as of June 30, 2023$20,757 
 As of and For the Six Months Ended June 30, 2023
Balance as of December 31, 2022$21,361 
Net realized losses(88)
Net unrealized gains83 
Purchases2,239 
Sales(857)
Repayments(1,995)
PIK interest and dividends181 
Net accretion of discount on securities6 
Net transfers in and/or out of Level 3(173)
Balance as of June 30, 2023$20,757 
The following tables present changes in investments that use Level 3 inputs as of and for the three and six months ended June 30, 2022:
As of and For the Three Months Ended June 30, 2022
Balance as of March 31, 2022$19,375 
Net realized losses(24)
Net unrealized losses(145)
Purchases2,817 
Sales(659)
Repayments(434)
PIK interest and dividends80 
Net accretion of discount on securities2 
Net transfers in and/or out of Level 3— 
Balance as of June 30, 2022$21,012 
As of and For the Six Months Ended June 30, 2022
Balance as of December 31, 2021$19,908 
Net realized gains45 
Net unrealized losses(152)
Purchases4,671 
Sales(2,206)
Repayments(1,406)
PIK interest and dividends147 
Net accretion of discount on securities5 
Net transfers in and/or out of Level 3— 
Balance as of June 30, 2022$21,012 
Schedule of Carrying and Fair Values of Debt Obligations
The following are the carrying and fair values of the Company’s debt obligations as of June 30, 2023 and December 31, 2022. Fair value is estimated by discounting remaining payments using applicable current market rates, which take into account changes in the Company’s marketplace credit ratings, or market quotes, if available.

 As of
 June 30, 2023December 31, 2022
Carrying value(1)Fair value(4)Carrying value(1)Fair value(4)
Revolving Credit Facility$1,922 $1,922 $2,246 $2,246 
Revolving Funding Facility850 850 800 800 
SMBC Funding Facility401 401 451 451 
BNP Funding Facility475 475 245 245 
2024 Convertible Notes (principal amount outstanding of $403)
401 (2)406 399 (2)428 
2023 Notes (principal amount outstanding of $0 and $750, respectively)
— — 750 (2)749 
2024 Notes (principal amount outstanding of $900)
899 (2)880 898 (2)873 
March 2025 Notes (principal amount outstanding of $600)
598 (2)574 597 (2)570 
July 2025 Notes (principal amount outstanding of $1,250)
1,256 (2)1,159 1,258 (2)1,157 
January 2026 Notes (principal amount outstanding of $1,150)
1,145 (2)1,069 1,144 (2)1,059 
July 2026 Notes (principal amount outstanding of $1,000)
992 (2)871 991 (2)850 
2027 Notes (principal amount outstanding of $500)
495 (2)434 494 (2)427 
2028 Notes (principal amount outstanding of $1,250)
1,247 (2)1,035 1,247 (2)1,007 
2031 Notes (principal amount outstanding of $700)
690 (2)535 690 (2)516 
Total$11,371 (3)$10,611 $12,210 (3)$11,378 
________________________________________

(1)The Revolving Credit Facility, the Revolving Funding Facility, the SMBC Funding Facility and the BNP Funding Facility carrying values are the same as the principal amounts outstanding.

(2)Represents the aggregate principal amount outstanding, less unamortized debt issuance costs and the net unaccreted/amortized discount or premium recorded upon issuance.

(3)Total principal amount of debt outstanding totaled $11,401 and $12,245 as of June 30, 2023 and December 31, 2022, respectively.

(4)The fair value of these debt obligations would be categorized as Level 2 under ASC 820-10.
v3.23.2
STOCKHOLDERS’ EQUITY (Tables)
 6 Months Ended
Jun. 30, 2023
Equity [Abstract]  
Schedule of Common Shares Issued and Sold In connection with the issuance of its common stock, the Company issued and sold the following shares of common stock during the six months ended June 30, 2023:

Issuances of Common Stock		Number of Shares IssuedGross ProceedsUnderwriting Fees/Offering ExpensesNet ProceedsAverage Offering Price Per Share(1)
Public offerings12.1$236.8 $13.4 $223.4 $19.61 (2)
“At the market” offerings25.3486.0 5.6 480.4 $19.22 
Total37.4$722.8 $19.0 $703.8 
________________________________________
(1)    Represents the gross offering price per share before deducting underwriting discounts and commissions and offering expenses. (2)    12.1 of the shares were sold to the underwriters for a price of $18.53 per share which the underwriters were then permitted to sell at variable prices to the public.
v3.23.2
EARNINGS PER SHARE (Tables)
 6 Months Ended
Jun. 30, 2023
Earnings Per Share [Abstract]  
Schedule of Computations of Basic and Diluted Net Increase in Stockholders' Equity
The following information sets forth the computations of basic and diluted net increase in stockholders’ equity resulting from operations per share for the three and six months ended June 30, 2023 and 2022:

 For the Three Months Ended June 30,For the Six Months Ended June 30,
 2023202220232022
Net increase in stockholders’ equity resulting from operations—basic$331 $111 $609 $322 
Adjustment for interest expense on 2024 Convertible Notes(1)4 4 8 8 
Net increase in stockholders’ equity resulting from operations—diluted$335 $115 $617 $330 
Weighted average shares of common stock outstanding—basic547 494 541 487 
Assumed conversion of 2024 Convertible Notes20 20 20 20 
Weighted average shares of common stock outstanding—diluted567 514 561 507 
Net increase in stockholders’ equity resulting from operations per share—basic$0.61 $0.22 $1.13 $0.66 
Net increase in stockholders’ equity resulting from operations per share—diluted$0.59 $0.22 $1.10 $0.65 
________________________________________
(1)    Includes the impact of income based fees.
v3.23.2
DIVIDENDS AND DISTRIBUTIONS (Tables)
 6 Months Ended
Jun. 30, 2023
Equity [Abstract]  
Schedule of Dividends Declared and Payable
The following table summarizes the Company’s dividends declared and payable during the six months ended June 30, 2023 and 2022:

Date declaredRecord datePayment datePer share
amount		Total amount
April 25, 2023June 15, 2023June 30, 2023$0.48 $266 
February 7, 2023March 15, 2023March 31, 20230.48 261 
Total dividends declared and payable for the six months ended June 30, 2023
$0.96 $527 
April 26, 2022June 15, 2022June 30, 2022$0.42 $208 
February 9, 2022June 15, 2022June 30, 20220.03 (1)15 
February 9, 2022March 15, 2022March 31, 20220.42 205 
February 9, 2022March 15, 2022March 31, 20220.03 (1)15 
Total dividends declared and payable for the six months ended June 30, 2022
$0.90 $443 
___________________________________________________________________________
(1)Represents an additional dividend.
Schedule of Dividend Reinvestment Plan Activity Dividend reinvestment plan activity for the six months ended June 30, 2023 and 2022, was as follows:
For the Six Months Ended June 30,
20232022
Shares issued0.7 0.6 
Average issue price per share$18.79 $20.95 
Shares purchased by plan agent to satisfy dividends declared and payable during the period for stockholders 0.8 0.7 
Average purchase price per share$18.35 $18.60 
v3.23.2
FINANCIAL HIGHLIGHTS (Tables)
 6 Months Ended
Jun. 30, 2023
Investment Company [Abstract]  
Schedule of Financial Highlights
The following is a schedule of financial highlights as of and for the six months ended June 30, 2023 and 2022:

 As of and For the Six Months Ended June 30,
Per Share Data:20232022
Net asset value, beginning of period(1)$18.40 $18.96 
Issuances of common stock0.01 0.10 
Net investment income for period(2)1.17 0.93 
Net realized and unrealized losses for period(2)(0.04)(0.28)
Net increase in stockholders’ equity1.14 0.75 
Total distributions to stockholders(3)(0.96)(0.90)
Net asset value at end of period(1)$18.58 $18.81 
Per share market value at end of period$18.79 $17.93 
Total return based on market value(4)7.17 %(13.45)%
Total return based on net asset value(5)6.28 %3.98 %
Shares outstanding at end of period557496 
Ratio/Supplemental Data: 
Net assets at end of period$10,354 $9,335 
Ratio of operating expenses to average net assets(6)(7)12.37 %9.67 %
Ratio of net investment income to average net assets(6)(8)12.55 %9.97 %
Portfolio turnover rate(6)23 %36 %
_________________________________________________________________________________

(1)The net assets used equals the total stockholders’ equity on the consolidated balance sheet.

(2)Weighted average basic per share data.

(3)Includes additional dividends of $0.06 per share for the six months ended June 30, 2022.

(4)For the six months ended June 30, 2023, the total return based on market value equaled the increase of the ending market value at June 30, 2023 of $18.79 per share from the ending market value at December 31, 2022 of $18.47 per share plus the declared and payable dividends of $0.96 per share for the six months ended June 30, 2023, divided by the market value at December 31, 2022. For the six months ended June 30, 2022, the total return based on market value equaled the decrease of the ending market value at June 30, 2022 of $17.93 per share from the ending market value at December 31, 2021 of $21.19 per share plus the declared and payable dividends of $0.90 per share for the six months ended June 30, 2022, divided by the market value at December 31, 2021. The Company’s performance changes over time and currently may be different than that shown. Past performance is no guarantee of future results.

(5)For the six months ended June 30, 2023, the total return based on net asset value equaled the change in net asset value during the period plus the declared and payable dividends of $0.96 per share for the six months ended June 30, 2023, divided by the beginning net asset value for the period. For the six months ended June 30, 2022, the total return based on net asset value equaled the change in net asset value during the period plus the declared and payable dividends of $0.90 per share for the six months ended June 30, 2022, divided by the beginning net asset value for the period. The Company’s performance changes over time and currently may be different than that shown. Past performance is no guarantee of future results.

(6)The ratios reflect an annualized amount.
(7)For the six months ended June 30, 2023 and 2022, the ratio of operating expenses to average net assets consisted of the following:
 For the Six Months Ended June 30,
20232022
Base management fees3.19 %3.25 %
Income based fees and capital gains incentive fees3.08 %1.76 %
Cost of borrowing5.67 %4.25 %
Other operating expenses0.43 %0.41 %
(8)The ratio of net investment income to average net assets excludes income taxes related to realized gains and losses.
v3.23.2
SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Change in Accounting Estimate [Line Items]    
Cash denominated in foreign currencies $ 73 $ 12
Minimum    
Change in Accounting Estimate [Line Items]    
Lease term 1 year  
Maximum    
Change in Accounting Estimate [Line Items]    
Lease term 4 years  
v3.23.2
SIGNIFICANT ACCOUNTING POLICIES - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Jun. 30, 2022
Dec. 31, 2021
Accounting Policies [Abstract]        
Cash and cash equivalents $ 411 $ 303    
Restricted cash 42 34    
Total cash, cash equivalents and restricted cash shown in the consolidated statement of cash flows $ 453 $ 337 $ 261 $ 486
v3.23.2
AGREEMENTS - Narrative (Details)
$ in Millions
 3 Months Ended 6 Months Ended 225 Months Ended
Jun. 21, 2019
Jun. 20, 2019
Jun. 30, 2023
USD ($)
qtr
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
qtr
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
qtr
Dec. 31, 2022
USD ($)
Investment Company, Financial Highlights [Line Items]                
Asset coverage requirement applicable to senior securities 150.00% 200.00% 190.00%   190.00%   190.00%  
Number of quarters considered in base management fee calculation | qtr     2   2   2  
Capital gains incentive fees payable     $ 33   $ 33   $ 33 $ 35
Income based fees payable     79   79   79 81
Administrative and other fees     3 $ 2 6 $ 6    
Accounts payable and other liabilities     121   $ 121   121 167
Investment Advisory and Management Agreement | Controlled Affiliate                
Investment Company, Financial Highlights [Line Items]                
Termination notice period         60 days      
Asset coverage requirement applicable to senior securities 150.00% 200.00%            
Capital gains incentive fees payable     33   $ 33   33  
Payments of capital gains incentive fees             133  
Investment Advisory and Management Agreement | Controlled Affiliate | Minimum                
Investment Company, Financial Highlights [Line Items]                
Base management fee rate 1.00% 1.50%            
Debt to equity leverage ratio 100.00%              
Investment Advisory and Management Agreement | Controlled Affiliate | Maximum                
Investment Company, Financial Highlights [Line Items]                
Base management fee rate 1.50%              
Debt to equity leverage ratio 100.00%              
Incentive Rate, Quarterly Hurdle Rate | Controlled Affiliate                
Investment Company, Financial Highlights [Line Items]                
Incentive fee         1.75%      
Incentive Rate, Pre-Incentive Fee Net Investment Income Below Catch-Up Threshold | Controlled Affiliate                
Investment Company, Financial Highlights [Line Items]                
Incentive fee         100.00%      
Incentive Rate, Quarterly Catch-Up Threshold | Controlled Affiliate                
Investment Company, Financial Highlights [Line Items]                
Incentive fee         2.1875%      
Incentive Rate, Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold | Controlled Affiliate                
Investment Company, Financial Highlights [Line Items]                
Incentive fee         20.00%      
Incentive Rate, Realized Capital Gains | Controlled Affiliate                
Investment Company, Financial Highlights [Line Items]                
Incentive fee 20.00%       20.00%      
Incentive Rate, Net Assets For Deferral Of Cash Payments | Controlled Affiliate                
Investment Company, Financial Highlights [Line Items]                
Incentive fee 7.00%              
Capital Gains Incentive Fees | Controlled Affiliate                
Investment Company, Financial Highlights [Line Items]                
Related party transaction amounts payable     0 $ 0 $ 0 $ 0    
Administration Agreement | Controlled Affiliate                
Investment Company, Financial Highlights [Line Items]                
Termination notice period 60 days              
Accounts payable and other liabilities     $ 3   $ 3   $ 3 $ 2
v3.23.2
AGREEMENTS - Schedule of Base Management Fees, Income Based Fees, and Capital Gains Incentive Fees (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Investment Company [Abstract]        
Base management fees $ 79 $ 75 $ 158 $ 148
Income based fees 79 57 155 108
Capital gains incentive fees $ 4 $ (29) $ (2) $ (27)
v3.23.2
INVESTMENTS - Schedule of Investments (Details)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2023
USD ($)
borrower
Dec. 31, 2022
USD ($)
borrower
Schedule of Investments [Line Items]    
Amortized Cost $ 21,685.6 $ 22,043.0
Fair Value $ 21,496.5 $ 21,779.8
Loans on non-accrual status, as a percent of total investments at amortized cost 2.10% 1.70%
Loans on non-accrual status, as a percent of total investments at fair value 1.10% 1.10%
Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 100.00% 100.00%
Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 100.00% 100.00%
Senior Direct Lending Program    
Schedule of Investments [Line Items]    
Amortized Cost $ 5,096.0 $ 5,166.0
Fair Value $ 4,799.0 $ 4,958.0
Number of borrowers | borrower 21 22
Ivy Hill Asset Management, L.P.    
Schedule of Investments [Line Items]    
Amortized Cost $ 2,436.0 $ 2,370.0
Fair Value $ 9,476.0 $ 8,998.0
Number of borrowers | borrower 22  
West | Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 24.90% 24.50%
West | Senior Direct Lending Program | Investments, At Fair Value | Customer Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 5.80% 5.70%
West | Ivy Hill Asset Management, L.P. | Investments, At Fair Value | Customer Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 10.00% 10.10%
Midwest | Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 23.90% 23.90%
Southeast | Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 18.30% 17.10%
Northeast | Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 14.30% 14.00%
Mid-Atlantic | Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 13.80% 14.90%
International | Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 4.80% 5.60%
Software and Services    
Schedule of Investments [Line Items]    
Amortized Cost $ 4,846.2 $ 4,950.2
Fair Value $ 4,721.4 $ 4,760.6
Software and Services | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 22.00% 21.90%
Financial Services    
Schedule of Investments [Line Items]    
Amortized Cost $ 2,615.9 $ 2,755.3
Fair Value $ 2,794.2 $ 2,890.6
Financial Services | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 13.00% 13.30%
Health Care Services    
Schedule of Investments [Line Items]    
Amortized Cost $ 2,639.8 $ 2,525.9
Fair Value $ 2,425.2 $ 2,341.9
Health Care Services | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 11.30% 10.80%
Commercial and Professional Services    
Schedule of Investments [Line Items]    
Amortized Cost $ 2,168.8 $ 2,116.3
Fair Value $ 2,090.4 $ 2,077.0
Commercial and Professional Services | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 9.70% 9.50%
Investment Funds and Vehicles    
Schedule of Investments [Line Items]    
Amortized Cost $ 1,310.8 $ 1,305.8
Fair Value $ 1,275.9 $ 1,296.8
Investment Funds and Vehicles | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 5.90% 6.00%
Power Generation    
Schedule of Investments [Line Items]    
Amortized Cost $ 976.6 $ 942.8
Fair Value $ 1,037.6 $ 988.3
Power Generation | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 4.80% 4.50%
Insurance Services    
Schedule of Investments [Line Items]    
Amortized Cost $ 1,027.7 $ 1,152.6
Fair Value $ 1,024.3 $ 1,132.8
Insurance Services | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 4.80% 5.20%
Consumer Services | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 3.70% 4.20%
Consumer Durables and Apparel    
Schedule of Investments [Line Items]    
Amortized Cost $ 951.1 $ 923.9
Fair Value $ 793.1 $ 814.3
Consumer Durables and Apparel | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 3.70% 3.70%
Capital Goods    
Schedule of Investments [Line Items]    
Amortized Cost $ 569.5 $ 758.3
Fair Value $ 617.3 $ 783.9
Capital Goods | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 2.90% 3.60%
Media and Entertainment    
Schedule of Investments [Line Items]    
Amortized Cost $ 478.7 $ 422.3
Fair Value $ 521.4 $ 452.1
Media and Entertainment | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 2.40% 2.10%
Food and Beverage    
Schedule of Investments [Line Items]    
Amortized Cost $ 436.1 $ 420.4
Fair Value $ 446.6 $ 431.7
Food and Beverage | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 2.10% 2.00%
Retailing and Distribution    
Schedule of Investments [Line Items]    
Amortized Cost $ 431.9 $ 442.3
Fair Value $ 447.0 $ 475.2
Retailing and Distribution | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 2.10% 2.20%
Energy    
Schedule of Investments [Line Items]    
Amortized Cost $ 394.0 $ 380.6
Fair Value $ 431.4 $ 425.3
Energy | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 2.00% 2.00%
Automobiles and Components    
Schedule of Investments [Line Items]    
Amortized Cost $ 440.7 $ 473.2
Fair Value $ 426.2 $ 452.6
Automobiles and Components | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 2.00% 2.10%
Other | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 7.60% 6.90%
First lien senior secured loans    
Schedule of Investments [Line Items]    
Amortized Cost $ 9,304.0 $ 9,684.0
Fair Value 8,972.0 9,373.0
Second lien senior secured loans    
Schedule of Investments [Line Items]    
Amortized Cost 4,160.0 4,218.0
Fair Value 3,879.0 3,934.0
Subordinated certificates of the SDLP    
Schedule of Investments [Line Items]    
Amortized Cost 1,289.0 1,274.0
Fair Value 1,237.0 1,249.0
Senior subordinated loans    
Schedule of Investments [Line Items]    
Amortized Cost 1,147.0 1,163.0
Fair Value 1,054.0 1,079.0
Preferred equity    
Schedule of Investments [Line Items]    
Amortized Cost 2,161.0 2,095.0
Fair Value 2,140.0 2,027.0
Ivy Hill Asset Management, L.P.    
Schedule of Investments [Line Items]    
Amortized Cost 1,968.0 2,048.0
Fair Value 2,151.0 2,201.0
Other equity    
Schedule of Investments [Line Items]    
Amortized Cost 1,657.0 1,561.0
Fair Value 2,063.0 1,917.0
Unitranche loans    
Schedule of Investments [Line Items]    
Amortized Cost 4,875.0 4,983.0
Fair Value $ 4,746.0 $ 4,841.0
v3.23.2
INVESTMENTS - Senior Direct Lending Program (Details)
$ in Millions
Jun. 30, 2023
USD ($)
loan
Dec. 31, 2022
USD ($)
loan
Schedule of Investments [Line Items]    
Amortized Cost $ 21,685.6 $ 22,043.0
Fair Value 21,496.5 21,779.8
SDLP Certificates    
Schedule of Investments [Line Items]    
Amortized Cost 1,289.0 1,274.0
Fair Value $ 1,237.0 $ 1,249.0
Yield on investment, at cost 13.50% 13.50%
Yield on investment, at fair value 14.10% 13.80%
Number of loans on non-accrual status | loan 1 1
SDLP Certificates | Secured Overnight Financing Rate (SOFR)    
Schedule of Investments [Line Items]    
Interest rate, spread 8.00%  
SDLP Certificates | Ares Capital Corporation    
Schedule of Investments [Line Items]    
Ownership percentage of outstanding SDLP Certificates 87.50% 87.50%
SDLP Certificates | Client of Varagon    
Schedule of Investments [Line Items]    
Ownership percentage of outstanding SDLP Certificates 12.50% 12.50%
Senior Direct Lending Program    
Schedule of Investments [Line Items]    
Amount available for commitment $ 450.0  
Capital available to the SDLP 6,150.0 $ 6,150.0
Amortized Cost 5,096.0 5,166.0
Fair Value 4,799.0 4,958.0
Senior Direct Lending Program | Ares Capital Corporation    
Schedule of Investments [Line Items]    
Capital available to the SDLP $ 1,444.0 $ 1,444.0
v3.23.2
INVESTMENTS - Summary of Funded Capital and Unfunded Capital Commitments (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Schedule of Investments [Line Items]    
Total unfunded capital commitments $ 41 $ 57
Senior Direct Lending Program    
Schedule of Investments [Line Items]    
Total capital funded 5,191 5,127
Total unfunded capital commitments 280 294
Senior Direct Lending Program | Ares Capital Corporation    
Schedule of Investments [Line Items]    
Total capital funded 1,289 1,274
Total unfunded capital commitments $ 65 $ 68
v3.23.2
INVESTMENTS - Interest Income and Capital Structuring Service and Other Fees Earned (Details) - SDLP Certificates - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Schedule of Investments [Line Items]        
Interest income $ 43 $ 34 $ 86 $ 67
Capital structuring service fees $ 6 $ 3 $ 7 $ 8
v3.23.2
INVESTMENTS - Summary of the SDLP Portfolio (Details)
$ in Millions
Jun. 30, 2023
USD ($)
borrower
Dec. 31, 2022
USD ($)
borrower
Schedule of Investments [Line Items]    
Total unfunded capital commitments $ 41.0 $ 57.0
Senior Direct Lending Program    
Schedule of Investments [Line Items]    
Number of borrowers in the SDLP | borrower 21 22
Total unfunded capital commitments $ 280.0 $ 294.0
Senior Direct Lending Program | First lien senior secured loans    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5,113.0 5,174.0
Senior Direct Lending Program | Unitranche loans    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4,065.0 4,108.0
Investment, Identifier [Axis]: 2U, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.7 [1],[2],[3] 14.6 [4],[5],[6]
Investment, Identifier [Axis]: ADF Capital, Inc., ADF Restaurant Group, LLC, and ARG Restaurant Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 9.2 [2],[7] 8.3 [5],[8]
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   0.0
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   9.8
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   4.3
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   130.0
Investment, Identifier [Axis]: ADG, LLC, RC IV GEDC Investor LLC, and GEDC Equity, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 20.0  
Investment, Identifier [Axis]: ADG, LLC, RC IV GEDC Investor LLC, and GEDC Equity, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 14.8  
Investment, Identifier [Axis]: ADG, LLC, RC IV GEDC Investor LLC, and GEDC Equity, LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2] 30.4  
Investment, Identifier [Axis]: AI Aqua Merger Sub, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.0 [1],[2],[9] 1.0 [4],[5],[10]
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 10.1 28.5
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   26.8
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 7.2  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 9.4  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 6.9  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 7.1  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 3.4  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 6    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 7.0  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan 7    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.7  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.4
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.5  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.4  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Second lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 49.4 [1],[2] 45.6 [4],[5]
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.1 [1],[2] 10.3 [4],[5]
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Second lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 10.8 [1],[2] 10.0 [4],[5]
Investment, Identifier [Axis]: AIM Acquisition, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.3 1.8
Investment, Identifier [Axis]: AIM Acquisition, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.4  
Investment, Identifier [Axis]: AIM Acquisition, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.1 0.1
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   13.3
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 12.5  
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.5  
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: API Commercial Inc., API Military Inc., and API Space Intermediate, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 7.0 [2],[7] 7.3 [5],[8]
Investment, Identifier [Axis]: AQ Sage Buyer, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.4 6.4
Investment, Identifier [Axis]: AQ Sage Buyer, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.8 [1],[2],[3] 1.9 [4],[5],[6]
Investment, Identifier [Axis]: AQ Sunshine, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 9.1 11.0
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.5 [1],[2] 8.9 [4],[5]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.5 [1],[2] 8.5 [4],[5]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 5.6 [4],[5]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.9 [1],[2] 1.0 [4],[5]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.0 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.2 [1],[2],[11] 1.4 [4],[5],[12]
Investment, Identifier [Axis]: ASP-r-pac Acquisition CO LLC and ASP-r-pac Holdings LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.2 6.2
Investment, Identifier [Axis]: ASP-r-pac Acquisition CO LLC and ASP-r-pac Holdings LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: ATI Restoration, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 30.9 77.9
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 32.8 [1],[2] 33.0 [4],[5]
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 34.8 [1],[2] 8.2 [4],[5]
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 22.6  
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.2 [1],[2],[11] 4.7 [4],[5],[12]
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.4 3.9
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 53.4 [1],[2] 52.1 [4],[5]
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.3 [1],[2] 2.2 [4],[5]
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.5 [1],[2] 1.0 [4],[5]
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   0.1
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   61.0
Investment, Identifier [Axis]: Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.0 0.0
Investment, Identifier [Axis]: Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.1 [1],[2] 4.1 [4],[5]
Investment, Identifier [Axis]: Acrisure, LLC and Acrisure Finance, Inc., Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[10]   0.5
Investment, Identifier [Axis]: Acrisure, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[9] 0.2  
Investment, Identifier [Axis]: Acrisure, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[9] 0.8  
Investment, Identifier [Axis]: Advarra Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.4 0.4
Investment, Identifier [Axis]: Advarra Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.1 [1],[2] 4.1 [4],[5]
Investment, Identifier [Axis]: Aero Operating LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 36.0 [1],[2] 36.2 [4],[5]
Investment, Identifier [Axis]: Aero Operating LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.1 [1],[2] 1.1 [4],[5]
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 45.6 45.6
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 63.0 [1],[2] 120.6 [4],[5]
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 120.0 [1],[2] 63.3 [4],[5]
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 61.0 [1],[2] 56.8 [4],[5]
Investment, Identifier [Axis]: Aimbridge Acquisition Co., Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 22.5 [2] 22.5 [5]
Investment, Identifier [Axis]: Alcami Corporation and ACM Note Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.6 6.6
Investment, Identifier [Axis]: Alcami Corporation and ACM Note Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 9.4 [1],[2] 9.5 [4],[5]
Investment, Identifier [Axis]: Alcami Corporation and ACM Note Holdings, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 20.3 [2] 19.5 [5]
Investment, Identifier [Axis]: Alera Group, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 60.3 [1],[2] 60.6 [4],[5]
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.0 3.6
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.8 [2] 0.6 [5]
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.6 [2] 0.3 [5]
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 56.4 [1],[2] 56.4 [4],[5]
Investment, Identifier [Axis]: Amryt Pharmaceuticals, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   12.7
Investment, Identifier [Axis]: Amynta Agency Borrower Inc. and Amynta Warranty Borrower Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[9] 1.0  
Investment, Identifier [Axis]: Amynta Agency Borrower Inc. and Amynta Warranty Borrower Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   14.6
Investment, Identifier [Axis]: Amynta Agency Borrower Inc. and Amynta Warranty Borrower Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   2.3
Investment, Identifier [Axis]: Anaplan, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.4 1.4
Investment, Identifier [Axis]: Anaplan, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.8 [1],[2] 1.8 [4],[5]
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.1 3.4
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.1 [2] 4.4 [5]
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.3 [2] 1.0 [4],[5]
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.7  
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.2  
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 6    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.4  
Investment, Identifier [Axis]: Apex Clean Energy TopCo, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 18.1  
Investment, Identifier [Axis]: Apex Service Partners, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.4  
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 20.1  
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 8.5  
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 4.5  
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 16.8  
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.6  
Investment, Identifier [Axis]: Apex Service Partners, LLC, First lien senior secured loan 6    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 7.1  
Investment, Identifier [Axis]: Applied Technical Services, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.6 2.7
Investment, Identifier [Axis]: Applied Technical Services, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.0 [1],[2] 0.8 [4],[5]
Investment, Identifier [Axis]: Applied Technical Services, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.1 [1],[2] 1.1 [4],[5]
Investment, Identifier [Axis]: Appriss Health, LLC and Appriss Health Intermediate Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.1 0.1
Investment, Identifier [Axis]: Appriss Health, LLC and Appriss Health Intermediate Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.6 [1],[2] 5.7 [4],[5]
Investment, Identifier [Axis]: Apptio, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.9 1.7
Investment, Identifier [Axis]: Apptio, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 17.1 [1],[2] 15.1 [4],[5]
Investment, Identifier [Axis]: Apptio, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.3 [1],[2] 2.5 [4],[5]
Investment, Identifier [Axis]: Aptean, Inc. and Aptean Acquiror Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[9] 7.1  
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 15.6  
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 78.9 [1],[2],[3] 90.0 [4],[5],[6]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 7.1 [1],[2],[3] 66.8 [4],[5],[6]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 90.0 [1],[2],[3] 75.0 [4],[5],[6]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 68.1 [1],[2],[3] 7.0 [4],[5],[6]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 15.6  
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.4 [2],[3],[9] 1.4 [5],[6],[10]
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.4 2.5
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 20.9 [4],[5],[6]
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.2 [1],[2],[3] 5.9 [4],[5],[6]
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 4.9  
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 9.0 9.0
Investment, Identifier [Axis]: AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP 1    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.2  
Investment, Identifier [Axis]: Athyrium Buffalo LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.9 7.9
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.3 0.6
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.5 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: Auctane, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 146.0  
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 5.3 [4],[5]
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.2 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Avalara, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.7 2.7
Investment, Identifier [Axis]: Avalara, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 72.3 [1],[2] 72.2 [4],[5]
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   0.2
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 9.8 [1],[2] 9.4 [4],[5]
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 41.4 [2] 39.4 [5]
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 9.1 [1],[2],[9] 9.1 [4],[5],[10]
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.2
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., Second lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: Avetta, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.2 4.2
Investment, Identifier [Axis]: Avetta, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: AxiomSL Group, Inc. and Calypso Group, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.9 3.9
Investment, Identifier [Axis]: AxiomSL Group, Inc. and Calypso Group, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 21.2 [4],[5]
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   2.0
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   6.0
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 3.2  
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.8  
Investment, Identifier [Axis]: BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.3 [2] 5.0 [5]
Investment, Identifier [Axis]: BCTO Ignition Purchaser, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 3.4  
Investment, Identifier [Axis]: Badger Sportswear Acquisition, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   56.8
Investment, Identifier [Axis]: Badger Sportswear Acquisition, LLC, Second lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 28.4  
Investment, Identifier [Axis]: Badger Sportswear Acquisition, LLC, Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 28.4  
Investment, Identifier [Axis]: Balrog Acquisition, Inc., Balrog Topco, Inc. and Balrog Parent, L.P., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 29.5 [1],[2] 29.5 [4],[5]
Investment, Identifier [Axis]: Bamboo Purchaser, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 17.9 [1],[2] 17.9 [4],[5]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 11.6 7.1
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.0 [1],[2],[3] 20.3 [4],[5]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2],[3] 1.0 [4],[5]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.0 [1],[2],[3] 0.9 [4],[5]
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.5 5.5
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   17.9
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 20.1  
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 0.3  
Investment, Identifier [Axis]: Beacon Wellness Brands, Inc. and CDI Holdings I Corp.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.9  
Investment, Identifier [Axis]: Beacon Wellness Brands, Inc. and CDI Holdings I Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 3.7  
Investment, Identifier [Axis]: Belfor Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 18.0 8.0
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[11] 2.6  
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[12]   11.6
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[12]   1.4
Investment, Identifier [Axis]: Benecon Midco II LLC and Locutus Holdco LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.5 4.5
Investment, Identifier [Axis]: Benefytt Technologies, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.9 0.9
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   29.1
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[7] 25.0  
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[7] 5.3  
Investment, Identifier [Axis]: Berner Food & Beverage, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.6 1.2
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.8 [1],[2] 0.4 [4],[5]
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.3 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.1 0.2
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.0
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.8  
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.2  
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   2.8
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.5  
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.4  
Investment, Identifier [Axis]: Bobcat Purchaser, LLC and Bobcat Topco, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 10.5  
Investment, Identifier [Axis]: Bobcat Purchaser, LLC and Bobcat Topco, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 11.8  
Investment, Identifier [Axis]: Borrower R365 Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.3 2.9
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 16.1 [1],[2] 15.9 [4],[5]
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.0 [1],[2] 1.4 [4],[5]
Investment, Identifier [Axis]: Bottomline Technologies, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   2.3
Investment, Identifier [Axis]: Bottomline Technologies, Inc. and Legal Spend Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.3  
Investment, Identifier [Axis]: Bottomline Technologies, Inc. and Legal Spend Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 17.9  
Investment, Identifier [Axis]: Bottomline Technologies, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   18.0
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.4 4.4
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 28.1 [1],[2] 28.9 [4],[5]
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 22.2 [1],[2],[9] 4.8 [4],[5],[10]
Investment, Identifier [Axis]: Businessolver.com, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.6 3.6
Investment, Identifier [Axis]: Businessolver.com, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.4 [1],[2] 14.7 [4],[5]
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   8.3
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[10]   33.6
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [13]   0.0
Investment, Identifier [Axis]: CDI Holdings III Corp. and CDI Holdings I Corp.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   0.9
Investment, Identifier [Axis]: CDI Holdings III Corp. and CDI Holdings I Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   3.8
Investment, Identifier [Axis]: CHG PPC Parent LLC & PPC CHG Blocker LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 94.6 [1],[2] 94.6 [4],[5]
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 10.2 9.8
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 21.7 [1],[2] 21.8 [4],[5]
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.2 [1],[2] 3.8 [4],[5]
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.5  
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.4
Investment, Identifier [Axis]: CPIG Holdco Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 14.8  
Investment, Identifier [Axis]: CST Holding Company    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.9 1.7
Investment, Identifier [Axis]: CST Holding Company, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.7 [1],[2] 11.8 [4],[5]
Investment, Identifier [Axis]: CST Holding Company, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.2
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 22.6 25.8
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 38.7 [1],[2] 49.5 [4],[5]
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 38.9 [4],[5]
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 40.3 [1],[2] 1.7 [4],[5]
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.9 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Cadence Aerospace, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.8 0.5
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 10.8 [1],[2] 31.1 [4],[5]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.4 [1],[2] 11.9 [4],[5]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.1 [1],[2] 9.7 [4],[5]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.7 [1],[2] 7.8 [4],[5]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   5.3
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [14] 0.0  
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   13.7
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   1.0
Investment, Identifier [Axis]: Caerus Midco 3 S.à r.l.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.0 4.1
Investment, Identifier [Axis]: Caerus Midco 3 S.à r.l., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.4 [1],[2],[3] 5.4 [4],[5],[6]
Investment, Identifier [Axis]: Caerus Midco 3 S.à r.l., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 0.1  
Investment, Identifier [Axis]: Calyx Energy III, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   57.0
Investment, Identifier [Axis]: Calyx Energy III, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 50.5  
Investment, Identifier [Axis]: Calyx Energy III, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 5.0  
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.7 6.5
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 0.0 [13]
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 68.3 [1],[2] 68.3 [4],[5]
Investment, Identifier [Axis]: Captive Resources Midco, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.2 1.2
Investment, Identifier [Axis]: Captive Resources Midco, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.1 1.6
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.9 [1],[2] 3.4 [4],[5]
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   64.3
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Second lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.7  
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 62.6  
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.5 11.4
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.0 [2],[7] 9.5 [5],[8]
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.1 [2],[7] 2.1 [5],[8]
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[7] 5.8  
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 10.9  
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.8 [2],[7],[11] 6.8 [5],[8],[12]
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.0 [2],[7] 0.6 [5],[8],[12]
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.2 3.6
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 77.9 [1],[2] 75.4 [4],[5]
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   5.0
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 3.2  
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.3  
Investment, Identifier [Axis]: Chariot Buyer LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 11.4 8.8
Investment, Identifier [Axis]: Chariot Buyer LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.9 [2] 3.5 [5]
Investment, Identifier [Axis]: Chariot Buyer LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 134.4 [1],[2] 134.4 [4],[5]
Investment, Identifier [Axis]: Cheyenne Petroleum Company Limited Partnership, CPC 2001 LLC and Mill Shoals LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 9.5 9.5
Investment, Identifier [Axis]: Cheyenne Petroleum Company Limited Partnership, CPC 2001 LLC and Mill Shoals LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 49.3 [1],[2] 49.3 [4],[5]
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   68.2
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   30.0
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   20.0
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   15.5
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   12.2
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 6    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   4.9
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 7    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   3.0
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 8    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   3.0
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.2  
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 3.2  
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 5.9  
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.2  
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: Clarion Home Services Group, LLC and LBC Breeze Holdings LLC, First lien senior secured revolving loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 19.0  
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[9] 10.8  
Investment, Identifier [Axis]: Cloud Software Group, Inc., Picard Parent, Inc., Cloud Software Group Holdings, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., First lien senior secured notes    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[9] 88.9  
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.3 5.3
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   30.2
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 30.8  
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 0.8  
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 11.6  
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   2.5
Investment, Identifier [Axis]: Color Intermediate, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 20.3 [1],[2] 20.3 [4],[5]
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.3 0.6
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 24.7 [1],[2] 33.3 [4],[5]
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 19.9 [2] 19.9 [5]
Investment, Identifier [Axis]: Community Brands ParentCo, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.2 7.2
Investment, Identifier [Axis]: Community Brands ParentCo, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 10.6 [1],[2] 10.6 [4],[5]
Investment, Identifier [Axis]: Compex Legal Services, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.1 1.8
Investment, Identifier [Axis]: Compex Legal Services, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.5 [1],[2] 1.8 [4],[5]
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.0 1.1
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.3 [1],[2] 0.3 [4],[5]
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.9 [1],[2] 0.8 [4],[5]
Investment, Identifier [Axis]: Computer Services, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 34.0 [1],[2] 34.1 [4],[5]
Investment, Identifier [Axis]: Concert Golf Partners Holdco LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.1 3.1
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 11.8 13.4
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 74.5 [1],[2],[3] 11.7 [4],[5],[6]
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 28.5 [2],[3] 74.8 [4],[5],[6]
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.7 [1],[2],[3] 26.9 [5],[6]
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   0.8
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 0.2  
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 1.1  
Investment, Identifier [Axis]: Continental Acquisition Holdings, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 36.0 [1],[2] 36.2 [4],[5]
Investment, Identifier [Axis]: Continental Acquisition Holdings, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.3 [1],[2] 5.4 [4],[5]
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.6 7.3
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.1
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 6.4  
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.3  
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.6  
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.7
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.6  
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.5  
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.3 2.3
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   62.8
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 0.1  
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 17.6  
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.7 [1],[2],[3] 2.7 [4],[5],[6]
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 0.1 [4],[5],[6]
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 0.1 [4],[5],[6]
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 38.9 38.9
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 155.7 [1],[2] 155.7 [4],[5]
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.1 0.1
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.2 [1],[2],[3] 6.2 [4],[5],[6]
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.3 [1],[2],[3] 4.4 [4],[5],[6]
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 0.1 [4],[5],[6]
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2],[3] 6.3 [4],[5],[6]
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc., First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 7.7  
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.1 16.0
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 30.9 [2],[11] 21.9 [5],[12]
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 137.5 [1],[2] 137.5 [4],[5]
Investment, Identifier [Axis]: Coupa Holdings, LLC and Coupa Software Incorporated    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.9  
Investment, Identifier [Axis]: Coupa Holdings, LLC and Coupa Software Incorporated, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 9.0  
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 19.2 20.7
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.0 [1],[2] 1.5 [4],[5]
Investment, Identifier [Axis]: Coyote Buyer, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.5 5.8
Investment, Identifier [Axis]: Coyote Buyer, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.3  
Investment, Identifier [Axis]: CrossCountry Mortgage, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   56.3
Investment, Identifier [Axis]: CrossCountry Mortgage, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 93.8 [1],[2] 93.8 [4],[5]
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.1 3.2
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 24.4 [1],[2] 24.5 [4],[5]
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: DFC Global Facility Borrower III LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 11.6 17.4
Investment, Identifier [Axis]: DFC Global Facility Borrower III LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 99.2 [1],[2],[3],[15] 158.6 [4],[5],[6],[16]
Investment, Identifier [Axis]: DFS Holding Company, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.4  
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.0  
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   164.9
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   6.5
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   4.3
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 10.8 10.8
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.1 [1],[2] 28.0 [4],[5]
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 26.7 [1],[2] 25.8 [4]
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.1  
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 24.6  
Investment, Identifier [Axis]: DS Admiral Bidco, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.1 0.1
Investment, Identifier [Axis]: DS Admiral Bidco, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Datix Bidco Limited, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.3 [2],[3] 4.3 [5],[6]
Investment, Identifier [Axis]: Datix Bidco Limited, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.7 [2],[3] 0.7 [5],[6]
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   1.0
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.0 [2] 11.0 [5]
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 12.7 9.9
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 147.8 [1],[2] 148.6 [4],[5]
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.8 [1],[2] 6.6 [4],[5]
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 8.5 11.4
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.8  
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.1  
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.1 1.5
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 14.8 [1],[2] 35.9 [4],[5]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 2.0 [4],[5]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.1 [1],[2] 0.7 [4],[5],[12]
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.3 2.3
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 15.6 [1],[2] 15.8 [4],[5]
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Drilling Info Holdings, Inc. and Titan DI Preferred Holdings, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 25.0 [2] 25.0 [5]
Investment, Identifier [Axis]: Dye & Durham Corporation    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 5.9 13.2
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.8 [1],[2],[3] 40.0 [4],[5],[6]
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   5.0
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 5.0  
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 1.9  
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.8 7.1
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 21.9 [1],[2] 23.2 [4],[5]
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 8.5  
Investment, Identifier [Axis]: EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 177.9 [1],[2] 177.9 [4],[5]
Investment, Identifier [Axis]: EP Wealth Advisors, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 10.0 14.1
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 5.6 [4],[5]
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.4 [4],[5]
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.4 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.2 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: EPS NASS Parent, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.2 0.7
Investment, Identifier [Axis]: EPS NASS Parent, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: EPS NASS Parent, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.2 [1],[2] 0.8 [4],[5],[12]
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.9 1.1
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.8 [1],[2] 6.8 [4],[5]
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.2  
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Senior subordinated loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 44.4  
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Senior subordinated loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[3] 22.5  
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited and Eagle Football Holdings Limited, Senior subordinated loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[3] 4.7  
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited, Senior subordinated loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[6]   25.5
Investment, Identifier [Axis]: Eagle Football Holdings BidCo Limited, Senior subordinated loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[6]   41.7
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.0 0.0
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 61.0 [1] 50.0 [4],[5]
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.6 [1],[2] 11.3 [4],[5]
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 5.7 [4],[5]
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   4.1
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 3.4  
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.7  
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 15.1 15.6
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.6 [1],[2] 10.2 [4],[5]
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.5 [1],[2] 9.1 [4],[5]
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 8.8  
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   1.4
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[11] 1.2  
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[11] 0.7  
Investment, Identifier [Axis]: Emergency Communications Network, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.0 0.0
Investment, Identifier [Axis]: Emergency Communications Network, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 49.7 [1],[2] 48.4 [4],[5]
Investment, Identifier [Axis]: Emergency Communications Network, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 7.0 [1],[2] 6.8 [4],[5]
Investment, Identifier [Axis]: Ensemble RCM, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   2.5
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 14.4 14.5
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 5.6 [5],[6]
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.7 [2],[3] 0.1 [4],[5],[6]
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 0.1 [4],[5],[6]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 8.0 21.8
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 48.0 [1],[2] 78.1 [4],[5]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 77.7 [1],[2] 48.2 [4],[5]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 25.1 [1],[2] 19.6 [4],[5]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   5.6
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.2 [1],[2],[11] 0.0 [13]
Investment, Identifier [Axis]: European Capital UK SME Debt LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 5.4 5.2
Investment, Identifier [Axis]: Evolent Health LLC and Evolent Health, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 7.8  
Investment, Identifier [Axis]: Evolent Health LLC and Evolent Health, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 34.0  
Investment, Identifier [Axis]: Evolent Health LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   7.8
Investment, Identifier [Axis]: Excelligence Holdings Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 9.2 [1],[2] 9.2 [4],[5]
Investment, Identifier [Axis]: Explorer Investor, Inc    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   0.2
Investment, Identifier [Axis]: Explorer Investor, Inc, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.0
Investment, Identifier [Axis]: Extrahop Networks, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 12.4 5.9
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   20.2
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 21.5  
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 3.9  
Investment, Identifier [Axis]: FL Hawk Intermediate Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.5 0.5
Investment, Identifier [Axis]: FM:Systems Group, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.5 1.5
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 9.1 9.1
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 0.0 [13]
Investment, Identifier [Axis]: Faraday Buyer, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.1 4.7
Investment, Identifier [Axis]: Faraday Buyer, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   52.2
Investment, Identifier [Axis]: Faraday Buyer, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 52.1  
Investment, Identifier [Axis]: Faraday Buyer, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 3.6  
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.2 7.4
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 29.4 [1],[2] 29.6 [4],[5]
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.1 [1],[2] 1.1 [4],[5]
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.6 [1],[2] 6.5 [4],[5],[12]
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.7 [1],[2] 0.5 [4],[5],[12]
Investment, Identifier [Axis]: Florida Food Products, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.5 [1],[2] 0.4 [4],[5]
Investment, Identifier [Axis]: Florida Food Products, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.4 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Florida Food Products, LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 71.8 [1],[2] 71.8 [4],[5]
Investment, Identifier [Axis]: FlyWheel Acquireco, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.7  
Investment, Identifier [Axis]: FlyWheel Acquireco, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 52.6  
Investment, Identifier [Axis]: FlyWheel Acquireco, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 5.5  
Investment, Identifier [Axis]: Forescout Technologies, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 16.0 14.2
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 24.5 [1],[2] 23.8 [4],[5]
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.4 [1],[2] 12.6 [4],[5]
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 13.2  
Investment, Identifier [Axis]: Foundation Consumer Brands, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   12.8
Investment, Identifier [Axis]: Foundation Consumer Brands, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 13.6  
Investment, Identifier [Axis]: Foundation Consumer Brands, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 35.6  
Investment, Identifier [Axis]: Foundation Risk Partners, Corp.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 40.5 31.9
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 104.1 [1] 112.6 [4],[5]
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 30.2 [1],[2] 30.3 [4],[5]
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.1
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   8.6
Investment, Identifier [Axis]: GHX Ultimate Parent Corporation, Commerce Parent, Inc. and Commerce Topco, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   47.5
Investment, Identifier [Axis]: GHX Ultimate Parent Corporation, Commerce Parent, Inc. and Commerce Topco, LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 114.0 [1],[2] 114.0 [4],[5]
Investment, Identifier [Axis]: GI Ranger Intermediate LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.8 8.8
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 10.1 [1],[2] 10.2 [4],[5]
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.8 [1],[2] 1.8 [4],[5]
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.4 [1],[2] 0.4 [4],[5]
Investment, Identifier [Axis]: GNZ Energy Bidco Limited and Galileo Co-investment Trust I    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.0 3.1
Investment, Identifier [Axis]: GNZ Energy Bidco Limited and Galileo Co-investment Trust I, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 29.8 [1],[2],[3] 30.8 [4],[5],[6]
Investment, Identifier [Axis]: GS SEER Group Borrower LLC and GS SEER Group Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 10.9  
Investment, Identifier [Axis]: GS SEER Group Borrower LLC and GS SEER Group Holdings LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 18.2  
Investment, Identifier [Axis]: Galway Borrower LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 9.4 9.4
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 34.0 [1],[2] 34.2 [4],[5]
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 0.0 [13]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.0 0.0
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.2 [5]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.5 [1],[2] 1.5 [5]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 32.4 [1],[2] 32.4 [5]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 7.5 [1],[2] 21.1 [4],[5]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 21.1 [1],[2] 7.5 [5]
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 28.9 [1],[2],[9] 12.1 [4],[5],[10]
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 12.4 [1],[2],[9] 25.7 [4],[5],[10]
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 95.4 [1],[2] 95.4 [4],[5]
Investment, Identifier [Axis]: Global Music Rights, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.3 4.3
Investment, Identifier [Axis]: Global Music Rights, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 16.8 33.8
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 33.3 [1],[2] 17.7 [4],[5]
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 5.0 5.0
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 45.8 [2] 43.5 [5]
Investment, Identifier [Axis]: GroundWorks, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.9  
Investment, Identifier [Axis]: GroundWorks, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 10.0  
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[9] 26.4 [5],[10]
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 26.2 [2],[9] 3.3 [5],[10]
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.3 [2],[9] 0.1 [4],[5],[10]
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 73.0 [2] 73.0 [5]
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   19.0
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   60.5
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   7.8
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.1
Investment, Identifier [Axis]: HGC Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.5 7.5
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.3 12.0
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   5.8
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 7.8  
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.1  
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.8 [1],[2],[11] 2.8 [4],[5]
Investment, Identifier [Axis]: Halcon Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 12.5 [2] 13.4 [5]
Investment, Identifier [Axis]: Hanger, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 54.1 [1],[2] 54.2 [4],[5]
Investment, Identifier [Axis]: Hanger, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 110.6 [1],[2] 110.6 [4],[5]
Investment, Identifier [Axis]: Harvey Tool Company, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 22.5 28.5
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.8 [1],[2] 1.1 [4],[5]
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.7  
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.5  
Investment, Identifier [Axis]: HealthEdge Software, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 31.7 35.9
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   87.2
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 87.2  
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 4.2  
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 0.0 [13]
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.0 4.0
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 83.8 [2] 79.3 [5]
Investment, Identifier [Axis]: Helix Acquisition Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 12.6  
Investment, Identifier [Axis]: Help/Systems Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.1 7.5
Investment, Identifier [Axis]: Help/Systems Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2] 0.4  
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 22.7 25.5
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC 1    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 10.7  
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 22.7 [1],[2] 22.8 [4],[5]
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 12.2 [1],[2] 14.7 [4],[5]
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.4 [1],[2] 12.3 [4],[5]
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 14.6  
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: HighTower Holding, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.1 [2],[3],[9] 8.1 [5],[6],[10]
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 9.3 8.4
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 7.1 [1],[2],[9] 11.9 [4],[5],[10]
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 1.0 [5],[12]
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 70.4 [1],[2] 70.4 [4],[5]
Investment, Identifier [Axis]: Hometown Food Company    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.9 3.1
Investment, Identifier [Axis]: Hometown Food Company, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   0.8
Investment, Identifier [Axis]: Honor Technology, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.5 [1],[2] 2.5 [4],[5]
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 9.6 13.2
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 60.0 [1],[2] 60.4 [4],[5]
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   9.4
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 11.7  
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.3  
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 104.6 [2] 99.5 [5]
Investment, Identifier [Axis]: IQN Holding Corp.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.4 6.8
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.5  
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   23.5
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.4
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.4  
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 8.9  
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.2 [1],[2] 3.5 [4],[5]
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 0.0 [13]
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   9.6
Investment, Identifier [Axis]: ITI Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.9 3.7
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 34.9 [1],[2] 35.0 [4],[5]
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.0 [1],[2] 3.0 [4],[5]
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.8 [1],[2] 1.1 [4],[5]
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.8
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 16.6 [2] 16.6 [5]
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.3 [1],[2] 102.7 [4],[5]
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 117.1 [1],[2] 14.1 [4],[5]
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.0 [1],[2] 5.0 [4],[5]
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.3
Investment, Identifier [Axis]: Imprivata, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 16.1 [1],[2] 16.1 [4],[5]
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.7 13.0
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   11.4
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 12.7  
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.7  
Investment, Identifier [Axis]: Infinity Home Services HoldCo, Inc. and IHS Parent Holdings, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: Inmar, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 20.1  
Investment, Identifier [Axis]: Inmar, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   28.3
Investment, Identifier [Axis]: Inszone Mid, LLC and INSZ Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 13.5 17.2
Investment, Identifier [Axis]: Inszone Mid, LLC and INSZ Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 20.9 [1],[2] 17.6 [4],[5]
Investment, Identifier [Axis]: Inszone Mid, LLC and INSZ Holdings, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.4  
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P., Subordinated revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 267.0 [1],[2],[3] 500.0 [4],[6]
Investment, Identifier [Axis]: JDC Healthcare Management, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.0 0.0
Investment, Identifier [Axis]: JDC Healthcare Management, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 41.5 [2],[7] 40.9 [5],[8]
Investment, Identifier [Axis]: JDC Healthcare Management, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.9 [2],[7] 4.8 [5],[8]
Investment, Identifier [Axis]: Jenny C Acquisition, Inc., Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.6 [2] 1.6 [5]
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   19.2
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 19.1  
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 4.0  
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   9.1
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   50.4
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   2.3
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.2
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC)    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.7 1.8
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   3.2
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.7  
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.3  
Investment, Identifier [Axis]: KNPC HoldCo, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.6 [1],[2] 5.6 [4]
Investment, Identifier [Axis]: KNPC HoldCo, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.3 [1],[2] 1.3 [4],[5]
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.7 [1],[2] 12.6 [4],[5]
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.1 [1],[2] 3.3 [4],[5]
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 23.7 31.2
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 167.7 [1],[2] 167.0 [4],[5]
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[11] 4.8  
Investment, Identifier [Axis]: Kellermeyer Bergensons Services, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 56.5 [1],[2] 56.8 [4],[5]
Investment, Identifier [Axis]: Kellermeyer Bergensons Services, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 8.7 8.7
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 40.4 [1],[2] 40.6 [4],[5]
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 0.0 [13]
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Senior subordinated loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   60.0
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Senior subordinated loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   8.0
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 5.6 10.1
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P. 1    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.9  
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   35.7
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 35.9  
Investment, Identifier [Axis]: LJ Perimeter Buyer, Inc. and LJ Perimeter Co-Invest, L.P., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 4.3  
Investment, Identifier [Axis]: LJP Purchaser, Inc. and LJP Topco, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.4 4.4
Investment, Identifier [Axis]: LJP Purchaser, Inc. and LJP Topco, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.5 [1],[2] 8.5 [4],[5]
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 37.0 [2],[3] 3.0 [5],[6]
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.0 [2],[3] 37.0 [5],[6]
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   3.9
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   21.2
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   6.7
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   6.1
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 23.4 32.5
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.5 [1],[2] 23.6 [4],[5]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 40.0 [1],[2] 16.7 [4]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 4.4 [4],[5]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.5 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.9  
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   8.8
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 13.4  
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 4.6  
Investment, Identifier [Axis]: Largest Portfolio Company Investment | Senior Direct Lending Program    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 373.0 377.0
Investment, Identifier [Axis]: LeanTaaS Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 47.0 54.0
Investment, Identifier [Axis]: LeanTaaS Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 38.8 [1],[2] 31.8 [4],[5]
Investment, Identifier [Axis]: Leviathan Intermediate Holdco, LLC and Leviathan Holdings, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.3 4.8
Investment, Identifier [Axis]: Leviathan Intermediate Holdco, LLC and Leviathan Holdings, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 16.1 [1],[2] 16.2 [4],[5]
Investment, Identifier [Axis]: Leviathan Intermediate Holdco, LLC and Leviathan Holdings, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.7 [4],[5]
Investment, Identifier [Axis]: Lew's Intermediate Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.3 2.3
Investment, Identifier [Axis]: Lew's Intermediate Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.0 [1],[2] 1.0 [4],[5]
Investment, Identifier [Axis]: Lido Advisors, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 5.4 0.4
Investment, Identifier [Axis]: Lido Advisors, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.0  
Investment, Identifier [Axis]: Lido Advisors, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.4 [1],[2] 0.4 [4],[5]
Investment, Identifier [Axis]: LifeStyles Bidco Ltd., Lifestyles Intermediate Holdco Ltd. and LifeStyles Parent, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 18.6 [1],[2],[3] 18.6 [4],[5],[6]
Investment, Identifier [Axis]: Lifescan Global Corporation, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 13.2 [1],[2],[9] 14.3 [5]
Investment, Identifier [Axis]: Lifescan Global Corporation, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2],[9] 0.2 [5]
Investment, Identifier [Axis]: Lightbeam Bidco, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.2  
Investment, Identifier [Axis]: Lightbeam Bidco, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 4.6  
Investment, Identifier [Axis]: Lightbeam Bidco, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [14] 0.0  
Investment, Identifier [Axis]: Lower ACS, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 24.4 25.9
Investment, Identifier [Axis]: Lower ACS, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.8 [1],[2] 5.4 [4],[5]
Investment, Identifier [Axis]: Lower ACS, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.5  
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 15.2 [1],[2],[9] 14.3 [4],[5]
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., Second lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 68.4 [1],[2] 68.4 [4],[5]
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 23.6 [1],[2] 23.6 [4],[5]
Investment, Identifier [Axis]: MRI Software LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.3 10.6
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 46.8 [1],[2] 47.1 [4]
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.0 [1],[2] 17.4 [4],[5]
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 20.5  
Investment, Identifier [Axis]: MailSouth, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.7 [2],[7] 8.7 [5],[8]
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.0 2.0
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 30.3 [4],[5]
Investment, Identifier [Axis]: Management Consulting & Research LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   4.0
Investment, Identifier [Axis]: Management Consulting & Research LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.0
Investment, Identifier [Axis]: Manna Pro Products, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.9 1.9
Investment, Identifier [Axis]: Manna Pro Products, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.1 [1],[2] 5.1 [4],[5]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.4 [1],[2] 6.5 [4],[5]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 2.6 [4],[5]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   2.1
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.3
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 5.9 6.9
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.7 [4],[5]
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.5 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.2  
Investment, Identifier [Axis]: Maverick Acquisition, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 27.5 [1],[2] 27.6 [4],[5]
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 23.9 25.6
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [13]   0.0
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.8 2.6
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.5 [1],[2] 84.5 [4],[5],[17]
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 84.5 [1],[2],[18] 5.5 [4],[5]
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan, First Out Tranche    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 40.9 40.9
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.7 [1],[2] 1.9 [4],[5]
Investment, Identifier [Axis]: Medline Borrower, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.8 6.7
Investment, Identifier [Axis]: Medline Borrower, LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 0.0 [13]
Investment, Identifier [Axis]: Micromeritics Instrument Corp.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.1 4.1
Investment, Identifier [Axis]: Micromeritics Instrument Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 19.7 [1],[2] 20.7 [4],[5]
Investment, Identifier [Axis]: Microstar Logistics LLC, Microstar Global Asset Management LLC, MStar Holding Corporation and Kegstar USA Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 168.3 [1],[2] 159.3 [4]
Investment, Identifier [Axis]: Mimecast Borrowerco, Inc. and Magnesium Co- Invest SCSp    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 15.1 15.1
Investment, Identifier [Axis]: Mimecast Borrowerco, Inc. and Magnesium Co- Invest SCSp 1    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.0  
Investment, Identifier [Axis]: Mimecast Borrowerco, Inc. and Magnesium Co- Invest SCSp, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 101.6 [1],[2],[3] 102.1 [4],[5],[6]
Investment, Identifier [Axis]: Mimecast Borrowerco, Inc. and Magnesium Co- Invest SCSp, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 36.4 [1],[2],[3] 34.8 [4],[5],[6]
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 25.4 27.3
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 35.3 [1],[2] 32.5 [4],[5]
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.9 [1],[2],[11] 4.0 [4],[5],[12]
Investment, Identifier [Axis]: Mitchell International, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[9] 0.7  
Investment, Identifier [Axis]: Mitchell International, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 98.1 [1],[2],[9] 98.1 [4],[5],[10]
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.6  
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.9  
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.5  
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.4  
Investment, Identifier [Axis]: Modigent, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.6  
Investment, Identifier [Axis]: Monica Holdco (US) Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.0 1.2
Investment, Identifier [Axis]: Monica Holdco (US) Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.6 [1],[2] 2.6 [4],[5]
Investment, Identifier [Axis]: Monica Holdco (US) Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.6 [1],[2] 2.4 [4],[5],[12]
Investment, Identifier [Axis]: Moonraker AcquisitionCo LLC and Moonraker HoldCo LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 19.0 19.0
Investment, Identifier [Axis]: Moonraker AcquisitionCo LLC and Moonraker HoldCo LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 25.0 [1],[2] 25.1 [4],[5]
Investment, Identifier [Axis]: Movati Athletic (Group) Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.8 [1],[2],[3] 4.7 [4],[5],[6]
Investment, Identifier [Axis]: Mr. Greens Intermediate, LLC, Florida Veg Investments LLC, MRG Texas, LLC and Restaurant Produce and Services Blocker, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.2  
Investment, Identifier [Axis]: Mr. Greens Intermediate, LLC, Florida Veg Investments LLC, MRG Texas, LLC and Restaurant Produce and Services Blocker, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 9.8  
Investment, Identifier [Axis]: Mr. Greens Intermediate, LLC, Florida Veg Investments LLC, MRG Texas, LLC and Restaurant Produce and Services Blocker, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [14] 0.0  
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 9.2 27.5
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 93.8 [1],[2] 75.5 [4],[5]
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.4 2.4
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.2 [1],[2] 6.3 [4],[5]
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.3 [1],[2] 2.3 [4],[5]
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.3 [1],[2] 1.3 [4],[5]
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.6 [1],[2] 0.6 [4],[5]
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 11.5 28.1
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 97.0 [4],[5]
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 96.5 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 8.3  
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 11.6 12.7
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 31.8 [1],[2] 32.0 [4],[5]
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.7 [1],[2] 4.7 [4],[5]
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.1  
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.4 9.4
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[12]   2.3
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[11] 6.8  
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2] 0.5  
Investment, Identifier [Axis]: National Intergovernmental Purchasing Alliance Company    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 9.0 7.8
Investment, Identifier [Axis]: National Intergovernmental Purchasing Alliance Company, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   1.2
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.5 0.5
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 14.8 [1],[2],[3] 14.9 [4],[5],[6]
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.9 [2],[3] 4.8 [5],[6]
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.5 [2],[3] 1.5 [5],[6]
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 0.1 [4],[5],[6]
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 12.6 12.6
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 99.3 [1],[2],[9] 99.3 [4],[5]
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 16.5 [2],[9] 74.0 [4],[5]
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 81.9 [1],[2] 16.2 [5]
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured note    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[9] 52.8  
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., First lien senior secured notes    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[10]   52.8
Investment, Identifier [Axis]: Neptune Bidco US Inc. and Elliott Metron Co-Investor Aggregator L.P., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 221.3 [1],[2] 221.3 [4],[5]
Investment, Identifier [Axis]: Nest Topco Borrower Inc., KKR Nest Co-Invest L.P., and NBLY 2021-1    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   119.1
Investment, Identifier [Axis]: Nest Topco Borrower Inc., KKR Nest Co-Invest L.P., and NBLY 2021-1, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 119.1 [1],[2] 119.1 [4],[5]
Investment, Identifier [Axis]: New Era Cap, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 27.0 [1],[2] 27.8 [4],[5]
Investment, Identifier [Axis]: Noble Aerospace, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.4 3.4
Investment, Identifier [Axis]: Noble Aerospace, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 0.0 [13]
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.6 8.1
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 19.9 [1],[2] 20.0 [4],[5]
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.8 [1],[2] 2.9 [4],[5]
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 4.0  
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.5  
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 47.3 [1],[2] 47.5 [4],[5]
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 2.6 [4],[5]
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.5 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2] 1.4  
Investment, Identifier [Axis]: North Haven Fairway Buyer, LLC, Fairway Lawns, LLC and Command Pest Control, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 10.3 22.5
Investment, Identifier [Axis]: North Haven Fairway Buyer, LLC, Fairway Lawns, LLC and Command Pest Control, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   6.4
Investment, Identifier [Axis]: North Haven Fairway Buyer, LLC, Fairway Lawns, LLC and Command Pest Control, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 7.6  
Investment, Identifier [Axis]: North Haven Fairway Buyer, LLC, Fairway Lawns, LLC and Command Pest Control, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 5.4  
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   3.5
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   25.3
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 25.4  
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.4  
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.5 4.3
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 7.7 [1],[2] 6.9 [4],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.7 [1],[2] 0.8 [4],[5]
Investment, Identifier [Axis]: Northwinds Holding, Inc. and Northwinds Services Group LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 15.1  
Investment, Identifier [Axis]: Northwinds Holding, Inc. and Northwinds Services Group LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 16.4  
Investment, Identifier [Axis]: Northwinds Holding, Inc. and Northwinds Services Group LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.8  
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 22.8 [1],[2] 23.5 [4],[5]
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.3 [1],[2] 6.3 [4],[5]
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 25.7 [1],[2] 25.9 [4],[5]
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 15.2 [1],[2] 15.2 [4],[5]
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Offen, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   5.6
Investment, Identifier [Axis]: Offen, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [2] 1.4 [5]
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.4 1.6
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 53.3 [2],[7] 50.9 [8]
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 7.2 [2],[7] 8.7 [5],[8]
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[7] 3.2  
Investment, Identifier [Axis]: OneDigital Borrower LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.7 7.1
Investment, Identifier [Axis]: OneDigital Borrower LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.4 [11] 0.0 [13]
Investment, Identifier [Axis]: Opal Fuels LLC and Opal Fuels Inc., Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 29.7 [3] 28.5 [6]
Investment, Identifier [Axis]: OpenMarket Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 14.9 [1],[2],[3] 51.6 [4],[5],[6]
Investment, Identifier [Axis]: Osmose Utilities Services, Inc. and Pine Intermediate Holding LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 55.3 [1],[2] 55.3 [4],[5]
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment, L.P. and PCG-Ares Sidecar Investment II, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 37.6 37.5
Investment, Identifier [Axis]: PDDS HoldCo, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.6 2.1
Investment, Identifier [Axis]: PDDS HoldCo, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   9.4
Investment, Identifier [Axis]: PDDS HoldCo, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 10.1  
Investment, Identifier [Axis]: PDDS HoldCo, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.9  
Investment, Identifier [Axis]: PDDS HoldCo, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.7  
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.8 1.5
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 52.6 [1],[2] 52.9 [4],[5]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.8 [1],[2] 6.1 [4],[5]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 70.1 [1],[2] 70.1 [4],[5]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.3 [1],[2] 8.7 [4],[5]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.7 [1],[2] 8.3 [4],[5]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 7.2 [1],[2] 7.2 [4],[5]
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.6 1.4
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 14.9 [1],[2] 14.9 [4],[5]
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.3 [1],[2] 4.5 [4],[5]
Investment, Identifier [Axis]: Pathstone Family Office LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.1  
Investment, Identifier [Axis]: Pathstone Family Office LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 3.9  
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.9 1.9
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 76.3 [1],[2] 76.3 [4],[5]
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.2 2.2
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   16.0
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 14.3  
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.6  
Investment, Identifier [Axis]: Paya, Inc and GTCR-Ultra Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   4.5
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.9 20.6
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 13.7 [4],[5]
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.3 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 7.7  
Investment, Identifier [Axis]: Pelican Products, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.3 2.3
Investment, Identifier [Axis]: Pelican Products, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 60.0 [1],[2] 60.0 [4],[5]
Investment, Identifier [Axis]: People Corporation    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 12.7 19.3
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 39.6 [1],[2],[3] 40.9 [4],[5],[6]
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 12.1 [1],[2],[3] 12.8 [4],[5],[6]
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.5 [1],[2],[3] 8.1 [4],[5],[6]
Investment, Identifier [Axis]: People Corporation, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.0 [1],[2],[3] 1.3 [4],[5],[6]
Investment, Identifier [Axis]: Perforce Software, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.4 0.5
Investment, Identifier [Axis]: Perforce Software, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[11] 1.0  
Investment, Identifier [Axis]: PerkinElmer U.S. LLC and NM Polaris Co-Invest, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 17.5  
Investment, Identifier [Axis]: PestCo Holdings, LLC and PestCo, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.9  
Investment, Identifier [Axis]: PestCo Holdings, LLC and PestCo, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.7  
Investment, Identifier [Axis]: PetVet Care Centers, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.3 [1],[2] 5.3 [4],[5]
Investment, Identifier [Axis]: Petroleum Service Group LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 13.0 13.1
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 33.7 [1],[2] 34.5 [4],[5]
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.7 [1],[2] 11.6 [4],[5]
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 11.2  
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.4  
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.4  
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2],[11] 2.5 [4],[5],[12]
Investment, Identifier [Axis]: Petrus Buyer, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.7 2.7
Investment, Identifier [Axis]: Petrus Buyer, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.0 [1],[2] 5.1 [4],[5]
Investment, Identifier [Axis]: Petvisor Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 30.9 37.6
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   21.5
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 5.9  
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.9  
Investment, Identifier [Axis]: Ping Identity Holding Corp.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.2 0.2
Investment, Identifier [Axis]: Ping Identity Holding Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.3 [1],[2] 11.3 [4],[5]
Investment, Identifier [Axis]: Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 22.5 [1],[2],[9] 22.6 [4],[5]
Investment, Identifier [Axis]: Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 55.0 [1],[2] 55.0 [4],[5]
Investment, Identifier [Axis]: Pluralsight, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.1 0.1
Investment, Identifier [Axis]: Pluralsight, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 106.2 [1],[2] 106.2 [4],[5]
Investment, Identifier [Axis]: Pluralsight, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: Polymer Solutions Group, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.0
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.6 [1],[2],[3] 11.7 [4],[5],[6]
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.0 [1],[2],[3] 4.0 [4],[5],[6]
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 11.0 13.0
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 14.6 [1],[2],[3] 14.7 [4],[5],[6]
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 0.1 [4],[5],[6]
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 0.1 [4],[5],[6]
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.2 [1],[2],[3] 6.2 [4],[5],[6]
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.5 8.7
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 27.1 [1],[2] 27.3 [4],[5]
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.5 [1],[2] 2.3 [4],[5]
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 35.4 35.4
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.5 [1],[2] 8.6 [4],[5]
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 0.0 [13]
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 67.1 [2] 67.1 [5]
Investment, Identifier [Axis]: Prime Buyer, L.L.C.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 15.2 13.2
Investment, Identifier [Axis]: Prime Buyer, L.L.C., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.7 [1],[2] 2.7 [4],[5]
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.7 [1],[2],[3] 0.7 [4],[5],[6]
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   3.3
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   65.0
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 57.5  
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 7.2  
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 3.3  
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 41.1 [1],[2] 39.1 [4],[5]
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 15.3 [1],[2] 15.4 [4],[5]
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.9 [1],[2] 7.6 [4],[5]
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 7.5 [1],[2] 0.9 [4],[5]
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   0.1
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 18.2 [2] 17.1 [5]
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [2] 0.1 [5]
Investment, Identifier [Axis]: ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.1 13.3
Investment, Identifier [Axis]: ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 9.9 [1],[2] 5.5 [4],[5]
Investment, Identifier [Axis]: Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.8 [2],[9] 2.8 [5],[10]
Investment, Identifier [Axis]: Project Essential Bidco, Inc. and Project Essential Super Parent, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.1 1.1
Investment, Identifier [Axis]: Project Essential Bidco, Inc. and Project Essential Super Parent, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 36.1 [1],[2] 36.2 [4],[5]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.4 3.4
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 43.4 [1],[2] 43.6 [4],[5]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 14.3 [4],[5]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.9 [1],[2] 12.8 [4],[5]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   4.9
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.1 [1],[2] 2.1 [4],[5],[12]
Investment, Identifier [Axis]: Project Ruby Ultimate Parent Corp., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 193.1 [1],[2] 193.1 [4],[5]
Investment, Identifier [Axis]: Proofpoint, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.1 3.1
Investment, Identifier [Axis]: Proofpoint, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.0 [1],[2],[9] 1.0 [4],[5],[10]
Investment, Identifier [Axis]: Proofpoint, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 34.6 [1],[2] 34.6 [4],[5]
Investment, Identifier [Axis]: Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   3.6
Investment, Identifier [Axis]: Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.4
Investment, Identifier [Axis]: PushPay USA Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.6  
Investment, Identifier [Axis]: PushPay USA Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 12.7  
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   0.0
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   16.9
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.1
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   9.7
Investment, Identifier [Axis]: Pyramid-BMC IntermediateCo I, LLC and Pyramid Investors, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.6  
Investment, Identifier [Axis]: Pyramid-BMC IntermediateCo I, LLC and Pyramid Investors, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 7.7  
Investment, Identifier [Axis]: QF Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.8 2.3
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.8 [1],[2] 8.1 [4],[5]
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.9 [1],[2] 6.8 [4],[5]
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.1 [1],[2] 3.7 [4],[5]
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.7 2.8
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   10.6
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 10.6  
Investment, Identifier [Axis]: Qnnect, LLC and Connector TopCo, LP, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: RB Holdings InterCo, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.8 3.8
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.4 [1],[2] 11.5 [4],[5]
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.8
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.7  
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.4  
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.7  
Investment, Identifier [Axis]: RD Holdco Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[8]   24.2
Investment, Identifier [Axis]: RD Holdco Inc., Second lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[7] 26.0  
Investment, Identifier [Axis]: RD Holdco Inc., Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.0  
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.9 2.9
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.6 0.6
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   32.8
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.1  
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 29.2  
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.3  
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 8.6 6.1
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 22.4 [1],[2] 22.5 [4],[5]
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 7.3 [1],[2] 9.8 [4],[5]
Investment, Identifier [Axis]: Radiant Intermediate Holding, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.1  
Investment, Identifier [Axis]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.3 2.1
Investment, Identifier [Axis]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2],[3] 0.4 [4],[5],[6]
Investment, Identifier [Axis]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.3 [1],[2],[3] 0.4 [4],[5],[6]
Investment, Identifier [Axis]: Radwell Parent, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.5 4.4
Investment, Identifier [Axis]: Radwell Parent, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 19.5 [4],[5]
Investment, Identifier [Axis]: Radwell Parent, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.9  
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.4 4.4
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   8.5
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 8.5  
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 11.8  
Investment, Identifier [Axis]: Rawlings Sporting Goods Company, Inc. and Easton Diamond Sports, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 49.5 [1],[2] 49.7 [4],[5]
Investment, Identifier [Axis]: Rawlings Sporting Goods Company, Inc. and Easton Diamond Sports, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: RealPage, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 84.1 [1],[2] 84.1 [4],[5]
Investment, Identifier [Axis]: Reddy Ice LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.1 0.2
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 60.9 [1],[2] 61.3 [4],[5]
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.2 [1],[2] 4.2 [4],[5]
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.9 [1],[2] 0.9 [4],[5]
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.3  
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 12.5 4.5
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.8 [4],[5]
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.4 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: Reef Lifestyle, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.4 0.0
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 23.0 [1],[2] 23.7 [4],[5]
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.8 [1],[2] 1.3 [4],[5]
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 26.7 [1],[2],[11] 35.5 [4],[5],[12]
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.2 [1],[2],[11] 1.0 [4],[5],[12]
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[11] 16.3  
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[11] 2.0  
Investment, Identifier [Axis]: Registrar Intermediate, LLC and PSP Registrar Co-Investment Fund, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 28.0 28.0
Investment, Identifier [Axis]: Registrar Intermediate, LLC and PSP Registrar Co-Investment Fund, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.7 [1],[2] 2.7 [4],[5]
Investment, Identifier [Axis]: Relativity ODA LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.8 3.8
Investment, Identifier [Axis]: Relativity ODA LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 23.0 [1],[2] 22.5 [4],[5]
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.7 7.3
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.2  
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.4  
Investment, Identifier [Axis]: Revalize, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.9 0.9
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.7  
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.7
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   0.1
Investment, Identifier [Axis]: Rialto Management Group, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.0 1.1
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.3 [1],[2],[3] 0.3 [5],[6]
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 0.1 [5],[6]
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 0.1 [5],[6]
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 0.0 [6],[13]
Investment, Identifier [Axis]: Riser Merger Sub, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.0 2.8
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.7
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.7  
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.7  
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: Riverview Power LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   8.9
Investment, Identifier [Axis]: Riverview Power LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 40.9 [1],[2] 57.6 [4],[5]
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.5 4.9
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 16.8 [1],[2] 16.9 [4],[5]
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.7 [1],[2] 1.3 [4],[5]
Investment, Identifier [Axis]: SCIH Salt Holdings Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.5 4.9
Investment, Identifier [Axis]: SCIH Salt Holdings Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   2.3
Investment, Identifier [Axis]: SCM Insurance Services Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.1 4.0
Investment, Identifier [Axis]: SCM Insurance Services Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 61.1 [4],[5],[6]
Investment, Identifier [Axis]: SE1 Generation, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 44.9 [2] 57.5 [5]
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 15.2 6.9
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.2 [1] 10.0 [4],[5]
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 10.0 [1],[2] 6.2 [4],[5]
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.4 [1],[2] 0.4 [4],[5]
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   8.3
Investment, Identifier [Axis]: SG Acquisition, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 33.8 [1],[2] 33.8 [4],[5]
Investment, Identifier [Axis]: SHO Holding I Corporation, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[8]   124.9
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 18.2  
Investment, Identifier [Axis]: SHO Holding I Corporation, Shoes For Crews (Europe) Limited and Never Slip TopCo, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[7] 124.9  
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   3.8
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.8  
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 89.6  
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   61.1
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   22.7
Investment, Identifier [Axis]: SSE Buyer, Inc., Supply Source Enterprises, Inc., Impact Products LLC, The Safety Zone, LLC and SSE Parent, LP, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 23.4 [2],[7] 21.0 [5],[8]
Investment, Identifier [Axis]: SV-Burton Holdings, LLC and LBC Breeze Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   3.3
Investment, Identifier [Axis]: SV-Burton Holdings, LLC and LBC Breeze Holdings LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.3
Investment, Identifier [Axis]: SVP-Singer Holdings Inc. and SVP-Singer Holdings LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 44.2 [2],[7] 44.4 [4],[5]
Investment, Identifier [Axis]: Safe Home Security, Inc., Security Systems Inc., Safe Home Monitoring, Inc., National Protective Services, Inc., Bright Integrations LLC and Medguard Alert, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 47.6 [1],[2] 47.9 [4],[5]
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   4.6
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   14.0
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   5.9
Investment, Identifier [Axis]: SageSure Holdings, LLC and SageSure LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.1  
Investment, Identifier [Axis]: SageSure Holdings, LLC and SageSure LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.7  
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC, Tender Lawn Care ULC and Landscape Parallel Partners, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.7 4.4
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC, Tender Lawn Care ULC and Landscape Parallel Partners, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.9 [1],[2] 0.6 [4],[5]
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC, Tender Lawn Care ULC and Landscape Parallel Partners, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.6 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: SelectQuote, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 22.3 [1],[2] 22.2 [4],[5]
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC, Subordinated certificates    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [6],[19]   1,274.1
Investment, Identifier [Axis]: Service Logic Acquisition, Inc. and MSHC, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.4 [1],[2] 0.1
Investment, Identifier [Axis]: Shermco Intermediate Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.4 1.3
Investment, Identifier [Axis]: Shermco Intermediate Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.6 [2] 2.7 [5]
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.1 2.5
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.3  
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 5.0 3.2
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 26.6 [1],[2] 26.8 [4],[5]
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 6.2  
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.8
Investment, Identifier [Axis]: Silk Holdings III Corp. and Silk Holdings I Corp.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.0  
Investment, Identifier [Axis]: Silk Holdings III Corp. and Silk Holdings I Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 16.8  
Investment, Identifier [Axis]: Silk Holdings III Corp. and Silk Holdings I Corp., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: SiroMed Physician Services, Inc. and SiroMed Equity Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.1 7.1
Investment, Identifier [Axis]: SiroMed Physician Services, Inc. and SiroMed Equity Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 9.2 [1],[2] 10.3 [4],[5]
Investment, Identifier [Axis]: Smarsh Inc. and Skywalker TopCo, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.0 2.0
Investment, Identifier [Axis]: Smarsh Inc. and Skywalker TopCo, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.9 [1],[2] 11.9 [4],[5]
Investment, Identifier [Axis]: Sophia, L.P., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 105.9 [1],[2] 105.9 [4],[5]
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.4 1.7
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.6 [1],[2] 2.6 [4],[5]
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: Spring Insurance Solutions, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 21.9 [1],[2] 22.0 [4],[5]
Investment, Identifier [Axis]: Stamps.com Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   146.8
Investment, Identifier [Axis]: Star US Bidco LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 8.5 8.5
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 12.4  
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 46.3 [1],[2],[3] 51.3 [4],[5],[6]
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.3 [1],[2],[3] 5.2 [4],[5],[6]
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.8 [1],[2],[3] 2.5 [4],[5],[6]
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 3.1  
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 1.4  
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 6    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 3.4  
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 7    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 0.4  
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Second lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 42.8 [1],[2] 42.8 [4],[5]
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 10.3 [1],[2] 10.3 [4],[5]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 67.3 [2],[3] 66.0 [5],[6]
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 20.4 21.2
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 52.0 [1],[2] 52.0 [4],[5]
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.3 [1],[2] 5.3 [4],[5]
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.5 [1],[2],[11] 0.0 [13]
Investment, Identifier [Axis]: Sundance Group Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.3 3.0
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 20.1 [1],[2] 20.1 [4],[5]
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.8 [1],[2] 0.8 [4],[5]
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.7  
Investment, Identifier [Axis]: Sunk Rock Foundry Partners LP, Hatteras Electrical Manufacturing Holding Company and Sigma Electric Manufacturing Corporation, Diecast Beacon    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 5.7 5.4
Investment, Identifier [Axis]: Sunk Rock Foundry Partners LP, Hatteras Electrical Manufacturing Holding Company and Sigma Electric Manufacturing Corporation, Diecast Beacon, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [13]   0.0
Investment, Identifier [Axis]: Sunrun Atlas Depositor 2019-2, LLC and Sunrun Atlas Holdings 2019-2, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [2] 0.1 [5]
Investment, Identifier [Axis]: Sunrun Atlas Depositor 2019-2, LLC and Sunrun Atlas Holdings 2019-2, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 153.1 [1],[2] 147.9 [4],[5]
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.0 34.3
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC, Senior subordinated revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 45.0 [2],[3] 24.4 [5],[6]
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC, Senior subordinated revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 30.0 16.3 [5],[6]
Investment, Identifier [Axis]: Sunrun Xanadu Issuer 2019-1, LLC and Sunrun Xanadu Holdings 2019-1, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.3 [2] 0.3 [5]
Investment, Identifier [Axis]: Sunrun Xanadu Issuer 2019-1, LLC and Sunrun Xanadu Holdings 2019-1, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 74.3 [1],[2] 72.5 [4],[5]
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.0 3.9
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 12.3 [1],[2],[9] 12.4 [4],[5]
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   3.1
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 76.2 [1],[2] 76.2 [4],[5]
Investment, Identifier [Axis]: Synergy HomeCare Franchising, LLC and NP/Synergy Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.2 4.2
Investment, Identifier [Axis]: Synergy HomeCare Franchising, LLC and NP/Synergy Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 13.1 [1],[2] 13.1 [4],[5]
Investment, Identifier [Axis]: Systems Planning and Analysis, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.3  
Investment, Identifier [Axis]: Systems Planning and Analysis, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.0  
Investment, Identifier [Axis]: Systems Planning and Analysis, Inc., First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.1  
Investment, Identifier [Axis]: Systems Planning and Analysis, Inc., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.6  
Investment, Identifier [Axis]: TA/WEG Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.0 2.0
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [5]
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [5]
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [5]
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   0.1
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.2 0.2
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 34.3 [1],[2] 34.4 [4],[5]
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.5 [1],[2] 6.5 [4],[5]
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.1
Investment, Identifier [Axis]: THG Acquisition, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 13.5 18.2
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 17.0 [4],[5]
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 14.8 [1],[2] 14.9 [4],[5]
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 20.4 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.3  
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.3 6.2
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   35.1
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 34.7  
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.2 [1],[2] 1.3 [4],[5]
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.0 0.9
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.4
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.4  
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.0  
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.6 [1],[2] 0.4 [4],[5]
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.4 [4],[5]
Investment, Identifier [Axis]: Teasdale Foods, Inc. and Familia Group Holdings Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 76.1 [1],[2] 75.9 [4],[5]
Investment, Identifier [Axis]: Tempus Labs, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   71.4
Investment, Identifier [Axis]: Tempus Labs, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 71.4  
Investment, Identifier [Axis]: Tempus Labs, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 20.9  
Investment, Identifier [Axis]: TerSera Therapeutics LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   0.1
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   5.0
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   2.0
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.8
Investment, Identifier [Axis]: The Alaska Club Partners, LLC, Athletic Club Partners LLC and The Alaska Club, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.1 1.1
Investment, Identifier [Axis]: The Alaska Club Partners, LLC, Athletic Club Partners LLC and The Alaska Club, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 12.4 [1],[2] 12.5 [4],[5]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.8 1.1
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.2  
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.6  
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.3 [1],[2] 8.9 [4],[5]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.3 [1],[2] 2.5 [4],[5]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.3  
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 3.0  
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.9  
Investment, Identifier [Axis]: The Edelman Financial Center, LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 19.3 [2],[3],[9] 13.4 [5],[6],[10]
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.4 1.6
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[6]   3.5
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 2.8  
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 0.3  
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 0.2  
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 0.4  
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 0.1 [5],[6]
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.2 [2],[3] 3.0 [5],[6]
Investment, Identifier [Axis]: The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 13.2 12.6
Investment, Identifier [Axis]: The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 215.5 [1],[2] 213.5 [4],[5]
Investment, Identifier [Axis]: The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.2 [1],[2],[11] 1.7 [4],[5],[12]
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.1 6.9
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 37.2 [1],[2] 37.4 [5]
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.8  
Investment, Identifier [Axis]: Therapy Brands Holdings LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 29.1 [1],[2] 29.1 [4],[5]
Investment, Identifier [Axis]: Thermostat Purchaser III, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 11.4 11.7
Investment, Identifier [Axis]: Thermostat Purchaser III, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 23.0 [1],[2],[14] 23.0 [4],[5]
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   19.0
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[10]   10.9
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., First lien senior secured notes    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[10]   88.9
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   85.3
Investment, Identifier [Axis]: Top Five Largest Portfolio Company Investments | Senior Direct Lending Program    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1,654.0 1,631.0
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.2 [1],[2] 2.2 [4],[5]
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.6 [1],[2] 1.6 [4],[5]
Investment, Identifier [Axis]: Trader Corporation and Project Auto Finco Corp.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.6 3.6
Investment, Identifier [Axis]: Trader Corporation and Project Auto Finco Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 12.5 [1],[2],[3] 12.2 [4],[5],[6]
Investment, Identifier [Axis]: Triton Water Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.0 [1],[2],[9] 1.0 [4],[5],[10]
Investment, Identifier [Axis]: Triton Water Holdings, Inc., Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [2],[9] 0.1 [5],[10]
Investment, Identifier [Axis]: Triwizard Holdings, Inc. and Triwizard Parent, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 15.0  
Investment, Identifier [Axis]: Two Six Labs, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 10.3 10.3
Investment, Identifier [Axis]: U.S. Anesthesia Partners, Inc. & U.S. Anesthesia Partners Holdings, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 147.8 [1],[2] 147.8 [4],[5]
Investment, Identifier [Axis]: UKG Inc. and H&F Unite Partners, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 24.8 14.2
Investment, Identifier [Axis]: UKG Inc. and H&F Unite Partners, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 10.6 [5],[6],[12]
Investment, Identifier [Axis]: US Salt Investors, LLC and Emerald Lake Pearl Acquisition-A, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 9.9 9.9
Investment, Identifier [Axis]: US Salt Investors, LLC and Emerald Lake Pearl Acquisition-A, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 26.3 [1],[2] 26.4 [4],[5]
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   18.4
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC and Koln Co-Invest Unblocked, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 4.6  
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC and Koln Co-Invest Unblocked, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 10.4  
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.0
Investment, Identifier [Axis]: UserZoom Technologies, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 5.8  
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.3 8.7
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.2 [1],[2] 6.2 [4],[5]
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.2 [1],[2] 3.1 [4],[5]
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 27.3 [1],[2] 27.3 [5]
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.0 [1],[2] 9.4 [5]
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 9.5 [1],[2] 6.0 [5]
Investment, Identifier [Axis]: VRC Companies, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 5.4 5.4
Investment, Identifier [Axis]: VRC Companies, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.0
Investment, Identifier [Axis]: VRC Companies, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.1 [2] 5.0 [5]
Investment, Identifier [Axis]: VS Buyer, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 8.1 8.1
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[10]   14.8
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   122.7
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   21.1
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc., Hercules Achievement, Inc. and BCPE Hercules Holdings, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[9] 14.7  
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc., Hercules Achievement, Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 144.9  
Investment, Identifier [Axis]: Verista, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.7 7.1
Investment, Identifier [Axis]: Verista, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.8 [1],[2] 0.8 [4],[5]
Investment, Identifier [Axis]: Verista, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.5 [1],[2] 1.1 [4],[5]
Investment, Identifier [Axis]: Verscend Holding Corp.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 22.5 22.5
Investment, Identifier [Axis]: Viant Medical Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 7.6 [2],[9] 3.2 [5],[10]
Investment, Identifier [Axis]: Visual Edge Technology, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 32.6 [1],[2] 32.6 [4],[5]
Investment, Identifier [Axis]: Visual Edge Technology, Inc., Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 112.4 [2],[7] 103.8 [5],[8]
Investment, Identifier [Axis]: Vobev, LLC and Vobev Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 5.4  
Investment, Identifier [Axis]: Vobev, LLC and Vobev Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 49.6  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.0 25.8
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 32.9 [1],[2] 33.1 [4],[5]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.5 [1],[2] 14.5 [4],[5]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 13.8 [1],[2] 11.3 [4],[5]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 10.7 [1],[2] 10.7 [4],[5]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 4.5 [4],[5]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 6    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 7    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 30.9 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 15.3 [1],[2],[11] 8.6 [4],[5],[12]
Investment, Identifier [Axis]: Walnut Parent, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 14.6 [1],[2] 14.7 [4],[5]
Investment, Identifier [Axis]: Walnut Parent, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Wand Newco 3, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 182.6 [2] 182.6 [5]
Investment, Identifier [Axis]: Wash Encore Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   98.5
Investment, Identifier [Axis]: Wash Encore Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 97.9  
Investment, Identifier [Axis]: Wash Encore Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   0.7
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 21.0 [1],[2] 20.4 [4],[5]
Investment, Identifier [Axis]: Waverly Advisors, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   0.2
Investment, Identifier [Axis]: Waverly Advisors, LLC and WAAM Topco, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.2  
Investment, Identifier [Axis]: Waverly Advisors, LLC and WAAM Topco, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 0.6  
Investment, Identifier [Axis]: Waverly Advisors, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[6]   0.6
Investment, Identifier [Axis]: WebPT, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.7 0.6
Investment, Identifier [Axis]: WebPT, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 48.1 [4],[5]
Investment, Identifier [Axis]: WebPT, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.3 [4],[5]
Investment, Identifier [Axis]: Wellness AcquisitionCo, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.9 3.9
Investment, Identifier [Axis]: Wellness AcquisitionCo, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Wellpath Holdings, Inc.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 6.7  
Investment, Identifier [Axis]: Wellpath Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[9] 33.4  
Investment, Identifier [Axis]: Wellpath Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[11] 4.1  
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.9 3.1
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.0 [14] 18.0 [4],[5]
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 17.9 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.2 [1],[2] 0.2 [4],[5]
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.2  
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   0.8
Investment, Identifier [Axis]: Winebow Holdings, Inc. and The Vintner Group, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 27.9 [1],[2] 28.0 [4],[5]
Investment, Identifier [Axis]: WorkWave Intermediate II, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 5.2 5.2
Investment, Identifier [Axis]: WorkWave Intermediate II, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 71.6 [1],[2] 67.4 [4],[5]
Investment, Identifier [Axis]: WorkWave Intermediate II, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 18.8 [1],[2] 17.3 [4],[5]
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P.    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 3.3  
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P. 1    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 0.2  
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 6.1  
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.4  
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[11] 0.2  
Investment, Identifier [Axis]: Worldwide Produce Acquisition, LLC and REP WWP Coinvest IV, L.P., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[11] 0.3  
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 1.4 8.7
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 37.0 [4]
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 36.7 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.2
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 3.1  
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.4  
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.7  
Investment, Identifier [Axis]: YE Brands Holdings, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.2 0.7
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 8.2 [4],[5]
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.1 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.5
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   21.4
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.1
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [13]   0.0
Investment, Identifier [Axis]: ZB Holdco LLC and ZB TopCo LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 7.1  
Investment, Identifier [Axis]: ZB Holdco LLC and ZB TopCo LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 13.3  
Investment, Identifier [Axis]: ZB Holdco LLC and ZB TopCo LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [14] 0.0  
Investment, Identifier [Axis]: ZenDesk, Inc., Zoro TopCo, Inc. and Zoro TopCo, LP    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 12.8 16.8
Investment, Identifier [Axis]: ZenDesk, Inc., Zoro TopCo, Inc. and Zoro TopCo, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 42.8 [1],[2] 42.4 [4],[5]
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 56.0 [1],[2] 55.8 [4],[5]
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.4 [1],[2] 56.0 [4],[5]
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 24.3 [1],[2] 24.3 [4],[5]
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 55.8 [1],[2] 5.4 [4],[5]
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT    
Schedule of Investments [Line Items]    
Total unfunded capital commitments 2.5 2.5
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Second lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 17.2 [2] 30.6 [4],[5]
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans $ 30.6 [2] 17.2 [4],[5]
Investment, Identifier [Axis]: n2y Holding, LLC    
Schedule of Investments [Line Items]    
Total unfunded capital commitments   $ 0.1
[1] Loan includes interest rate floor feature.
[2] These assets are pledged as collateral under the Company’s or the Company’s consolidated subsidiaries’ various revolving credit facilities and, as a result, are not directly available to the creditors of the Company to satisfy any obligations of the Company other than the obligations under each of the respective facilities (see Note 5).
[3] This portfolio company is not a qualifying asset under Section 55(a) of the Investment Company Act. Under the Investment Company Act, the Company may not acquire any non-qualifying asset unless, at the time such acquisition is made, qualifying assets represent at least 70% of the Company's total assets. Pursuant to Section 55(a) of the Investment Company Act, 24% of the Company's total assets are represented by investments at fair value and other assets that are considered "non-qualifying assets" as of June 30, 2023.
[4] Loan includes interest rate floor feature.
[5] These assets are pledged as collateral under the Company’s or the Company’s consolidated subsidiaries’ various revolving credit facilities and, as a result, are not directly available to the creditors of the Company to satisfy any obligations of the Company other than the obligations under each of the respective facilities (see Note 5).
[6] This portfolio company is not a qualifying asset under Section 55(a) of the Investment Company Act. Under the Investment Company Act, the Company may not acquire any non-qualifying asset unless, at the time such acquisition is made, qualifying assets represent at least 70% of the Company's total assets. Pursuant to Section 55(a) of the Investment Company Act, 25% of the Company's total assets are represented by investments at fair value and other assets that are considered "non-qualifying assets" as of December 31, 2022.
[7] Loan was on non-accrual status as of June 30, 2023.
[8] Loan was on non-accrual status as of December 31, 2022.
[9] Other than the investments noted by this footnote, the fair value of the Company’s investments is determined using unobservable inputs that are significant to the overall fair value measurement. See Note 8 to the consolidated financial statements for more information regarding the fair value of the Company’s investments.
[10] Other than the investments noted by this footnote, the fair value of the Company’s investments is determined using unobservable inputs that are significant to the overall fair value measurement. See Note 8 to the consolidated financial statements for more information regarding the fair value of the Company’s investments.
[11] As of June 30, 2023, in addition to the amounts funded by the Company under this first lien senior secured revolving loan, there were also letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
[12] As of December 31, 2022, in addition to the amounts funded by the Company under this first lien senior secured revolving loan, there were also letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
[13] As of December 31, 2022, no amounts were funded by the Company under this first lien senior secured revolving loan; however, there were letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
[14] As of June 30, 2023, no amounts were funded by the Company under this first lien senior secured revolving loan; however, there were letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
[15] The Company sold a participating interest of approximately $34.9 in aggregate principal amount outstanding of the portfolio company’s first lien senior secured revolving loan. As the transaction did not qualify as a “true sale” in accordance with U.S. generally accepted accounting principles (“GAAP”), the Company recorded a corresponding $34.9 secured borrowing, at fair value, included in “secured borrowings” in the accompanying consolidated balance sheet. As of June 30, 2023, the interest rate in effect for the secured borrowing was 12.76%.
[16] The Company sold a participating interest of approximately $79.0 in aggregate principal amount outstanding of the portfolio company’s first lien senior secured revolving loan. As the transaction did not qualify as a “true sale” in accordance with GAAP, the Company recorded a corresponding $79.0 secured borrowing, at fair value, included in “secured borrowings” in the accompanying consolidated balance sheet. As of December 31, 2022, the interest rate in effect for the secured borrowing was 11.62%.
[17] In addition to the interest earned based on the stated interest rate of this security, the Company is entitled to receive an additional interest amount of 2.00% on $40.9 in aggregate principal amount of a “first out” tranche of the portfolio company’s senior term debt previously syndicated by the Company into “first out” and “last out” tranches, whereby the “first out” tranche will have priority as to the “last out” tranche with respect to payments of principal, interest and any other amounts due thereunder.
[18] In addition to the interest earned based on the stated interest rate of this security, the Company is entitled to receive an additional interest amount of 2.00% on $40.9 in aggregate principal amount of a “first out” tranche of the portfolio company’s senior term debt previously syndicated by the Company into “first out” and “last out” tranches, whereby the “first out” tranche will have priority as to the “last out” tranche with respect to payments of principal, interest and any other amounts due thereunder.
[19] In addition to the interest earned based on the stated contractual interest rate of this security, the certificates entitle the holders thereof to receive a portion of the excess cash flow from the SDLP’s loan portfolio, after expenses, which may result in a return to the Company greater than the contractual stated interest rate.
v3.23.2
INVESTMENTS - Selected Financial Information for the SLDP (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2023
Jun. 30, 2022
Schedule of Investments [Line Items]                
Fair Value $ 21,496.5   $ 21,779.8       $ 21,496.5  
Other assets 81.0   81.0       81.0  
Total assets 22,231.0   22,398.0       22,231.0  
Total liabilities 11,877.0   12,843.0       11,877.0  
Total liabilities and stockholders’ equity 22,231.0   22,398.0       22,231.0  
Total investment income 634.0       $ 479.0   1,252.0 $ 919.0
Interest expense 141.0       101.0   280.0 194.0
Other expenses 8.0       6.0   15.0 12.0
Total expenses 314.0       212.0   612.0 441.0
Net investment income 314.0 $ 318.0 349.0 $ 288.0 257.0 $ 198.0 632.0 455.0
Net realized and unrealized losses on investments 17.0       (146.0)   (23.0) (85.0)
NET INCREASE IN STOCKHOLDERS’ EQUITY RESULTING FROM OPERATIONS 331.0       111.0   609.0 322.0
Amortized Cost 21,685.6   22,043.0       21,685.6  
Senior Direct Lending Program                
Schedule of Investments [Line Items]                
Fair Value 4,799.0   4,958.0       4,799.0  
Other assets 329.0   150.0       329.0  
Total assets 5,128.0   5,108.0       5,128.0  
Senior notes 3,584.0   3,538.0       3,584.0  
Intermediate funding notes 134.0   132.0       134.0  
Other liabilities 129.0   110.0       129.0  
Total liabilities 3,847.0   3,780.0       3,847.0  
Subordinated certificates and members’ capital 1,281.0   1,328.0       1,281.0  
Total liabilities and stockholders’ equity 5,128.0   5,108.0       5,128.0  
Total investment income 140.0       77.0   276.0 149.0
Interest expense 72.0       30.0   141.0 54.0
Other expenses 6.0       4.0   12.0 9.0
Total expenses 78.0       34.0   153.0 63.0
Net investment income 62.0       43.0   123.0 86.0
Net realized and unrealized losses on investments (17.0)       (12.0)   (85.0) (15.0)
NET INCREASE IN STOCKHOLDERS’ EQUITY RESULTING FROM OPERATIONS 45.0       $ 31.0   38.0 $ 71.0
Amortized Cost $ 5,096.0   $ 5,166.0       $ 5,096.0  
v3.23.2
INVESTMENTS - Ivy Hill Asset Management, L.P. (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
borrower
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
borrower
Jun. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
Schedule of Investments [Line Items]          
Amortized cost of investments $ 21,685.6   $ 21,685.6   $ 22,043.0
Purchases of investments     2,452.0 $ 4,849.0  
Ivy Hill Asset Management, L.P.          
Schedule of Investments [Line Items]          
Amortized cost of investments 1,968.0   1,968.0   2,048.0
Purchases of investments     7.0 27.0  
Realized loss on sale of investments     11.0 7.0  
Ivy Hill Asset Management, L.P.          
Schedule of Investments [Line Items]          
Assets under management $ 13,500.0   $ 13,500.0    
Number of borrowers | borrower 22   22    
Amortized cost of investments $ 2,436.0   $ 2,436.0   $ 2,370.0
Management and incentive fee income 13.0 $ 12.0 27.0 21.0  
Other investment-related income $ 95.0 $ 44.0 156.0 79.0  
Purchases of investments     $ 691.0 $ 1,555.0  
v3.23.2
INVESTMENTS - Amortized Cost and Fair Value of the Investment in IHAM (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Schedule of Investments [Line Items]    
Amortized Cost $ 21,685.6 $ 22,043.0
Fair Value 21,496.5 21,779.8
Ivy Hill Asset Management, L.P.    
Schedule of Investments [Line Items]    
Amortized Cost 1,968.0 2,048.0
Fair Value 2,151.0 2,201.0
Subordinated loan    
Schedule of Investments [Line Items]    
Amortized Cost 267.0 500.0
Fair Value 267.0 500.0
Equity    
Schedule of Investments [Line Items]    
Amortized Cost 1,701.0 1,548.0
Fair Value $ 1,884.0 $ 1,701.0
v3.23.2
INVESTMENTS - Dividend and Interest Income, IHAM (Details) - Ivy Hill Asset Management, L.P. - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Schedule of Investments [Line Items]        
Interest income $ 10 $ 3 $ 23 $ 3
Dividend income $ 60 $ 52 $ 117 $ 95
v3.23.2
INVESTMENTS - Yields at Amortized Cost and Fair Value (Details)
Jun. 30, 2023
Dec. 31, 2022
Subordinated loan    
Schedule of Investments [Line Items]    
Yield on investment, at cost 11.60% 11.00%
Yield on investment, at fair value 11.60% 11.00%
Equity    
Schedule of Investments [Line Items]    
Yield on investment, at cost 14.10% 14.20%
Yield on investment, at fair value 12.70% 12.90%
v3.23.2
INVESTMENTS - IHAM Selected Balance Sheet Information (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Assets    
Fair Value $ 21,496.5 $ 21,779.8
Cash and cash equivalents 411.0 303.0
Other assets 81.0 81.0
Total assets 22,231.0 22,398.0
Liabilities    
Total liabilities 11,877.0 12,843.0
Equity    
Accumulated earnings 80.0 (2.0)
Total liabilities and stockholders’ equity 22,231.0 22,398.0
Amortized Cost 21,685.6 22,043.0
Unrealized depreciation 200.0 200.0
Ivy Hill Asset Management, L.P.    
Assets    
Fair Value 9,476.0 8,998.0
Cash and cash equivalents 566.0 504.0
Other assets 98.0 99.0
Total assets 10,140.0 9,601.0
Liabilities    
Debt 7,612.0 7,276.0
Subordinated note from ARCC 267.0 500.0
Subordinated notes 281.0 281.0
Other liabilities 335.0 132.0
Total liabilities 8,495.0 8,189.0
Equity    
Contributed capital 1,700.0 1,547.0
Accumulated earnings 84.0 61.0
Net unrealized losses on investments and foreign currency transactions (16.0) (33.0)
Non-controlling interests in Consolidated IHAM Vehicles (123.0) (163.0)
Total equity 1,645.0 1,412.0
Total liabilities and stockholders’ equity 10,140.0 9,601.0
Amortized Cost 2,436.0 2,370.0
Ivy Hill Asset Management, L.P. | Intersegment Eliminations    
Assets    
Fair Value (2,403.0) (2,315.0)
Cash and cash equivalents 0.0 0.0
Other assets (66.0) (51.0)
Total assets (2,469.0) (2,366.0)
Liabilities    
Debt 0.0 0.0
Subordinated note from ARCC 0.0 0.0
Subordinated notes (1,014.0) (1,093.0)
Other liabilities (15.0) (15.0)
Total liabilities (1,029.0) (1,108.0)
Equity    
Contributed capital 0.0 0.0
Accumulated earnings 0.0 0.0
Net unrealized losses on investments and foreign currency transactions 0.0 0.0
Non-controlling interests in Consolidated IHAM Vehicles (1,440.0) (1,258.0)
Total equity (1,440.0) (1,258.0)
Total liabilities and stockholders’ equity (2,469.0) (2,366.0)
Ivy Hill Asset Management, L.P. | Ivy Hill Asset Management, L.P. | Operating Segments    
Assets    
Fair Value 2,427.0 2,340.0
Cash and cash equivalents 6.0 5.0
Other assets 70.0 56.0
Total assets 2,503.0 2,401.0
Liabilities    
Debt 452.0 308.0
Subordinated note from ARCC 267.0 500.0
Subordinated notes 0.0 0.0
Other liabilities 16.0 18.0
Total liabilities 735.0 826.0
Equity    
Contributed capital 1,700.0 1,547.0
Accumulated earnings 84.0 61.0
Net unrealized losses on investments and foreign currency transactions (16.0) (33.0)
Non-controlling interests in Consolidated IHAM Vehicles 0.0 0.0
Total equity 1,768.0 1,575.0
Total liabilities and stockholders’ equity 2,503.0 2,401.0
Amortized Cost 9,730.0 9,306.0
Ivy Hill Asset Management, L.P. | Consolidated IHAM Vehicles | Operating Segments    
Assets    
Fair Value 9,452.0 8,973.0
Cash and cash equivalents 560.0 499.0
Other assets 94.0 94.0
Total assets 10,106.0 9,566.0
Liabilities    
Debt 7,160.0 6,968.0
Subordinated note from ARCC 0.0 0.0
Subordinated notes 1,295.0 1,374.0
Other liabilities 334.0 129.0
Total liabilities 8,789.0 8,471.0
Equity    
Contributed capital 0.0 0.0
Accumulated earnings 0.0 0.0
Net unrealized losses on investments and foreign currency transactions 0.0 0.0
Non-controlling interests in Consolidated IHAM Vehicles 1,317.0 1,095.0
Total equity 1,317.0 1,095.0
Total liabilities and stockholders’ equity 10,106.0 9,566.0
Unrealized depreciation $ 278.0 $ 309.0
v3.23.2
INVESTMENTS - IHAM Selected Statement of Operations Information (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2023
Jun. 30, 2022
Revenues                
Total investment income $ 634       $ 479   $ 1,252 $ 919
Expenses                
Interest expense 141       101   280 194
Net realized gains (losses) on investments and other transactions (81)       (3)   (131) 55
Net unrealized gains (losses) on investments and other transactions 98 $ 10 $ (201) $ (184) (143) $ 3 108 (140)
Total net realized and unrealized gains on investments and other transactions 17       (146)   (23) (85)
NET INCREASE IN STOCKHOLDERS’ EQUITY RESULTING FROM OPERATIONS 331       111   609 322
Ivy Hill Asset Management, L.P.                
Revenues                
Investment income 274       121   530 220
Management fees and other income 2       2   4 3
Total investment income 276       123   534 223
Expenses                
Interest expense 159       51   307 84
Distributions to subordinated notes 11       18   19 24
Management fees and other expenses 9       5   18 12
Total expenses 179       74   344 120
Net operating income 97       49   190 103
Net realized gains (losses) on investments and other transactions 7       1   (20) 2
Net unrealized gains (losses) on investments and other transactions 5       (118)   28 (153)
Total net realized and unrealized gains on investments and other transactions 12       (117)   8 (151)
Net income (loss) 109       (68)   198 (48)
Less: Net income (loss) attributable to non-controlling interests in Consolidated IHAM Vehicles 18       (103)   41 (111)
NET INCREASE IN STOCKHOLDERS’ EQUITY RESULTING FROM OPERATIONS 91       35   157 63
Ivy Hill Asset Management, L.P. | Intersegment Eliminations                
Revenues                
Investment income (94)       (43)   (164) (75)
Management fees and other income (13)       (11)   (26) (20)
Total investment income (107)       (54)   (190) (95)
Expenses                
Interest expense 0       0   0 0
Distributions to subordinated notes (46)       (27)   (70) (50)
Management fees and other expenses (13)       (11)   (26) (20)
Total expenses (59)       (38)   (96) (70)
Net operating income (48)       (16)   (94) (25)
Net realized gains (losses) on investments and other transactions 0       0   0 0
Net unrealized gains (losses) on investments and other transactions (6)       13   (19) 23
Total net realized and unrealized gains on investments and other transactions (6)       13   (19) 23
Net income (loss) (54)       (3)   (113) (2)
Less: Net income (loss) attributable to non-controlling interests in Consolidated IHAM Vehicles (54)       (3)   (113) (2)
NET INCREASE IN STOCKHOLDERS’ EQUITY RESULTING FROM OPERATIONS 0       0   0 0
Ivy Hill Asset Management, L.P. | Ivy Hill Asset Management, L.P. | Operating Segments                
Revenues                
Investment income 95       44   166 78
Management fees and other income 13       12   27 21
Total investment income 108       56   193 99
Expenses                
Interest expense 16       5   35 6
Distributions to subordinated notes 0       0   0 0
Management fees and other expenses 4       3   8 7
Total expenses 20       8   43 13
Net operating income 88       48   150 86
Net realized gains (losses) on investments and other transactions 0       0   (10) 1
Net unrealized gains (losses) on investments and other transactions 3       (13)   17 (24)
Total net realized and unrealized gains on investments and other transactions 3       (13)   7 (23)
Net income (loss) 91       35   157 63
Less: Net income (loss) attributable to non-controlling interests in Consolidated IHAM Vehicles 0       0   0 0
NET INCREASE IN STOCKHOLDERS’ EQUITY RESULTING FROM OPERATIONS 91       35   157 63
Ivy Hill Asset Management, L.P. | Consolidated IHAM Vehicles | Operating Segments                
Revenues                
Investment income 273       120   528 217
Management fees and other income 2       1   3 2
Total investment income 275       121   531 219
Expenses                
Interest expense 143       46   272 78
Distributions to subordinated notes 57       45   89 74
Management fees and other expenses 18       13   36 25
Total expenses 218       104   397 177
Net operating income 57       17   134 42
Net realized gains (losses) on investments and other transactions 7       1   (10) 1
Net unrealized gains (losses) on investments and other transactions 8       (118)   30 (152)
Total net realized and unrealized gains on investments and other transactions 15       (117)   20 (151)
Net income (loss) 72       (100)   154 (109)
Less: Net income (loss) attributable to non-controlling interests in Consolidated IHAM Vehicles 72       (100)   154 (109)
NET INCREASE IN STOCKHOLDERS’ EQUITY RESULTING FROM OPERATIONS $ 0       $ 0   $ 0 $ 0
v3.23.2
DEBT - Debt Narrative (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2023
Dec. 31, 2022
Jun. 21, 2019
Jun. 20, 2019
Debt Instrument [Line Items]        
Asset coverage requirement applicable to senior securities 190.00%   150.00% 200.00%
Principal amount of debt outstanding $ 11,401 $ 12,245    
Weighted average stated interest rate 4.60% 4.20%    
Weighted Average        
Debt Instrument [Line Items]        
Term of debt instrument 3 years 6 months 3 years 7 months 6 days    
v3.23.2
DEBT - Schedule of Outstanding Debt (Details) - USD ($)
Jun. 30, 2023
Feb. 28, 2023
Dec. 31, 2022
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding $ 15,876,000,000   $ 16,221,000,000
Principal amount outstanding 11,401,000,000   12,245,000,000
Carrying value 11,371,000,000   12,210,000,000
Revolving Credit Facility      
Debt Instrument [Line Items]      
Borrowing capacity increase under line of credit 7,137,000,000   7,265,000,000
SMBC Funding Facility      
Debt Instrument [Line Items]      
Borrowing capacity increase under line of credit 1,000,000,000.0    
Line of Credit | Revolving Credit Facility      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 4,758,000,000   4,843,000,000
Principal amount outstanding 1,922,000,000   2,246,000,000
Carrying value 1,922,000,000   2,246,000,000
Line of Credit | Revolving Funding Facility      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 1,775,000,000   1,775,000,000
Principal amount outstanding 850,000,000   800,000,000
Carrying value 850,000,000   800,000,000
Line of Credit | SMBC Funding Facility      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 800,000,000   800,000,000
Principal amount outstanding 401,000,000   451,000,000
Carrying value 401,000,000   451,000,000
Line of Credit | BNP Funding Facility      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 790,000,000   300,000,000
Principal amount outstanding 475,000,000   245,000,000
Carrying value 475,000,000   245,000,000
Convertible Debt | 2024 Convertible Notes      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 403,000,000   403,000,000
Principal amount outstanding 403,000,000   403,000,000
Carrying value 401,000,000   399,000,000
Senior Notes | 2023 Notes      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 0 $ 750,000,000 750,000,000
Principal amount outstanding 0   750,000,000
Carrying value 0   750,000,000
Senior Notes | 2024 Notes      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 900,000,000   900,000,000
Principal amount outstanding 900,000,000   900,000,000
Carrying value 899,000,000   898,000,000
Senior Notes | March 2025 Notes      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 600,000,000   600,000,000
Principal amount outstanding 600,000,000   600,000,000
Carrying value 598,000,000   597,000,000
Senior Notes | July 2025 Notes      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 1,250,000,000   1,250,000,000
Principal amount outstanding 1,250,000,000   1,250,000,000
Carrying value 1,256,000,000   1,258,000,000
Senior Notes | January 2026 Notes      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 1,150,000,000   1,150,000,000
Principal amount outstanding 1,150,000,000   1,150,000,000
Carrying value 1,145,000,000   1,144,000,000
Senior Notes | July 2026 Notes      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 1,000,000,000   1,000,000,000
Principal amount outstanding 1,000,000,000   1,000,000,000
Carrying value 992,000,000   991,000,000
Senior Notes | 2027 Notes      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 500,000,000   500,000,000
Principal amount outstanding 500,000,000   500,000,000
Carrying value 495,000,000   494,000,000
Senior Notes | 2028 Notes      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 1,250,000,000   1,250,000,000
Principal amount outstanding 1,250,000,000   1,250,000,000
Carrying value 1,247,000,000   1,247,000,000
Senior Notes | 2031 Notes      
Debt Instrument [Line Items]      
Total aggregate principal amount committed / outstanding 700,000,000   700,000,000
Principal amount outstanding 700,000,000   700,000,000
Carrying value $ 690,000,000   $ 690,000,000
v3.23.2
DEBT - Revolving Credit Facility and Letter of Credit Facility Narrative (Details)
$ in Millions
 3 Months Ended 6 Months Ended 15 Months Ended
Jun. 30, 2023
USD ($)
Mar. 30, 2022
Jun. 30, 2023
USD ($)
Jun. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Debt Instrument [Line Items]          
Principal amount of debt outstanding $ 11,401.0   $ 11,401.0 $ 11,401.0 $ 12,245.0
Revolving Credit Facility          
Debt Instrument [Line Items]          
Borrowing capacity increase under line of credit 7,137.0   $ 7,137.0 $ 7,137.0 7,265.0
Percentage of total commitment under line of credit   0.85   0.85  
Percentage of unused portion of line of credit commitment     0.375%    
Revolving Credit Facility | Minimum          
Debt Instrument [Line Items]          
Percentage of line of credit commitment     2.00%    
Revolving Credit Facility | Maximum          
Debt Instrument [Line Items]          
Percentage of line of credit commitment     2.125%    
Revolving Credit Facility | Line of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit $ 4,758.0   $ 4,758.0 $ 4,758.0  
Minimum required ratio of total assets to total indebtedness 1.5   1.5 1.5  
Principal amount of debt outstanding $ 1,922.0   $ 1,922.0 $ 1,922.0 2,246.0
Remaining amount available for borrowing under line of credit $ 2,734.0   2,734.0 $ 2,734.0  
Revolving Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR), Credit Spread Adjustment          
Debt Instrument [Line Items]          
Interest rate spread       0.10%  
Revolving Credit Facility | Line of Credit | Base Rate | Minimum          
Debt Instrument [Line Items]          
Interest rate spread       1.75%  
Revolving Credit Facility | Line of Credit | Base Rate | Maximum          
Debt Instrument [Line Items]          
Interest rate spread       1.875%  
Revolving Credit Facility | Line of Credit | Alternate Base Rate | Minimum          
Debt Instrument [Line Items]          
Interest rate spread   0.75%   0.75%  
Revolving Credit Facility | Line of Credit | Alternate Base Rate | Maximum          
Debt Instrument [Line Items]          
Interest rate spread   0.875%   0.875%  
Revolving Credit Facility | Line of Credit | London Interbank Offered Rate (LIBOR) Swap Rate | Minimum          
Debt Instrument [Line Items]          
Interest rate spread   1.75%      
Revolving Credit Facility | Line of Credit | London Interbank Offered Rate (LIBOR) Swap Rate | Maximum          
Debt Instrument [Line Items]          
Interest rate spread   1.875%      
Revolving Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR)          
Debt Instrument [Line Items]          
Interest rate spread 1.75%        
Revolving Credit Facility | Line of Credit | Term loan tranche          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit $ 1,102.0   1,102.0 $ 1,102.0  
Revolving Credit Facility | Line of Credit | Term loan tranche | Debt Instrument, Redemption, Period One          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit 908.0   908.0 908.0  
Revolving Credit Facility | Line of Credit | Term loan tranche | Debt Instrument, Redemption, Period Two          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit 116.0   116.0 116.0  
Revolving Credit Facility | Line of Credit | Term loan tranche | Debt Instrument, Redemption, Period Three          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit 28.0   28.0 28.0  
Revolving Credit Facility | Line of Credit | Term loan tranche | Debt Instrument, Redemption, Period Four          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit 50.0   50.0 50.0  
Revolving Credit Facility | Line of Credit | Revolving Credit Facility          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit 3,656.0   3,656.0 3,656.0  
Revolving Credit Facility | Line of Credit | Revolving Credit Facility | Debt Instrument, Redemption, Period One          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit 2,905.0   2,905.0 2,905.0  
Revolving Credit Facility | Line of Credit | Revolving Credit Facility | Debt Instrument, Redemption, Period Two          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit 494.0   494.0 494.0  
Revolving Credit Facility | Line of Credit | Revolving Credit Facility | Debt Instrument, Redemption, Period Three          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit 107.0   107.0 107.0  
Revolving Credit Facility | Line of Credit | Revolving Credit Facility | Debt Instrument, Redemption, Period Four          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit 150.0   150.0 150.0  
Revolving Credit Facility | Line of Credit | Letter of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit 250.0   250.0 250.0  
Borrowing capacity increase under line of credit 50.0   50.0 50.0  
Principal amount of debt outstanding 102.0   102.0 102.0 $ 86.0
Letter Of Credit Facility | Line of Credit | Letter of Credit          
Debt Instrument [Line Items]          
Letter of credit facility outstanding $ 3.0   $ 3.0 $ 3.0  
v3.23.2
DEBT - Schedule of Components of Debt Interest Expense (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Line of Credit Facility [Line Items]        
Amortization of debt issuance costs     $ 15 $ 15
Net amortization of original issue premium/discount     (2) (3)
Total interest and credit facility fees expense $ 141 $ 101 280 194
Cash paid for interest expense     271 182
Convertible Debt        
Line of Credit Facility [Line Items]        
Stated interest expense 4 5 9 11
Net amortization of original issue premium/discount 0 0 1 1
Total interest and credit facility fees expense 4 5 10 12
Cash paid for interest expense 0 0 9 17
Senior Notes        
Line of Credit Facility [Line Items]        
Stated interest expense 61 67 124 134
Amortization of debt issuance costs 4 4 7 8
Net amortization of original issue premium/discount (1) (2) (3) (4)
Total interest and credit facility fees expense 64 69 128 138
Cash paid for interest expense 55 55 134 134
Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Average outstanding balance 1,995 1,242 2,114 1,161
Revolving Credit Facility | Line of Credit        
Line of Credit Facility [Line Items]        
Stated interest expense 34 9 68 14
Credit facility fees 3 3 6 4
Amortization of debt issuance costs 2 2 4 4
Total interest and credit facility fees expense 39 14 78 22
Cash paid for interest expense $ 43 $ 7 $ 75 $ 16
Average stated interest rate 6.84% 2.65% 6.37% 2.52%
Revolving Funding Facility        
Line of Credit Facility [Line Items]        
Average outstanding balance $ 865 $ 703 $ 838 $ 734
Revolving Funding Facility | Line of Credit        
Line of Credit Facility [Line Items]        
Stated interest expense 15 5 28 9
Credit facility fees 2 1 3 2
Amortization of debt issuance costs 1 1 2 2
Total interest and credit facility fees expense 18 7 33 13
Cash paid for interest expense $ 15 $ 7 $ 27 $ 10
Average stated interest rate 7.10% 2.82% 6.75% 2.40%
SMBC Funding Facility        
Line of Credit Facility [Line Items]        
Average outstanding balance $ 413 $ 401 $ 420 $ 403
SMBC Funding Facility | Line of Credit        
Line of Credit Facility [Line Items]        
Stated interest expense 7 2 14 5
Credit facility fees 0 1 1 1
Amortization of debt issuance costs 0 1 1 1
Total interest and credit facility fees expense 7 4 16 7
Cash paid for interest expense $ 7 $ 3 $ 14 $ 5
Average stated interest rate 6.94% 2.47% 6.55% 2.37%
BNP Funding Facility        
Line of Credit Facility [Line Items]        
Average outstanding balance $ 402 $ 54 $ 353 $ 49
BNP Funding Facility | Line of Credit        
Line of Credit Facility [Line Items]        
Stated interest expense 8 1 13 1
Credit facility fees 0 1 1 1
Amortization of debt issuance costs 1 0 1 0
Total interest and credit facility fees expense 9 2 15 2
Cash paid for interest expense $ 7 $ 0 $ 12 $ 0
Average stated interest rate 7.90% 2.83% 7.48% 3.39%
v3.23.2
DEBT - Revolving Funding Facility Narrative (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 29, 2022
Jun. 30, 2023
Dec. 31, 2022
Debt Instrument [Line Items]      
Principal amount of debt outstanding   $ 11,401 $ 12,245
Revolving Funding Facility | Line of Credit      
Debt Instrument [Line Items]      
Maximum borrowing capacity of line of credit   1,775  
Principal amount of debt outstanding   $ 850 $ 800
Revolving Funding Facility | Line of Credit | Secured Overnight Financing Rate (SOFR), Credit Spread Adjustment      
Debt Instrument [Line Items]      
Interest rate spread   0.10%  
Revolving Funding Facility | Line of Credit | Base Rate      
Debt Instrument [Line Items]      
Interest rate spread 1.00% 1.90%  
Revolving Funding Facility | Line of Credit | London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Interest rate spread 1.90%    
v3.23.2
DEBT - SMBC Funding Facility Narrative (Details)
$ in Millions
 2 Months Ended 4 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
extensionOption
Jun. 30, 2023
USD ($)
extensionOption
Apr. 27, 2023
Jun. 30, 2023
USD ($)
extensionOption
Dec. 31, 2022
USD ($)
Debt Instrument [Line Items]          
Principal amount of debt outstanding $ 11,401 $ 11,401   $ 11,401 $ 12,245
SMBC Funding Facility          
Debt Instrument [Line Items]          
Line of credit, borrowing capacity incremental increase limit 1,000 1,000   $ 1,000  
SMBC Funding Facility | Minimum          
Debt Instrument [Line Items]          
Percentage of unused portion of line of credit commitment       0.50%  
SMBC Funding Facility | Maximum          
Debt Instrument [Line Items]          
Percentage of unused portion of line of credit commitment       1.00%  
SMBC Funding Facility | Line of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit $ 800 $ 800   $ 800  
Number of debt maturity extensions | extensionOption 2 2   2  
Term of debt maturity extension option       1 year  
Principal amount of debt outstanding $ 401 $ 401   $ 401 $ 451
SMBC Funding Facility | Line of Credit | Secured Overnight Financing Rate (SOFR)          
Debt Instrument [Line Items]          
Interest rate spread 1.75%        
SMBC Funding Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Minimum          
Debt Instrument [Line Items]          
Interest rate spread   1.75%      
SMBC Funding Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Maximum          
Debt Instrument [Line Items]          
Interest rate spread   2.00%      
SMBC Funding Facility | Line of Credit | Secured Overnight Financing Rate (SOFR), Credit Spread Adjustment          
Debt Instrument [Line Items]          
Interest rate spread   0.10%      
SMBC Funding Facility | Line of Credit | Base Rate | Minimum          
Debt Instrument [Line Items]          
Interest rate spread   0.75% 0.75%    
SMBC Funding Facility | Line of Credit | Base Rate | Maximum          
Debt Instrument [Line Items]          
Interest rate spread   1.00% 1.00%    
SMBC Funding Facility | Line of Credit | London Interbank Offered Rate (LIBOR) | Minimum          
Debt Instrument [Line Items]          
Interest rate spread     1.75%    
SMBC Funding Facility | Line of Credit | London Interbank Offered Rate (LIBOR) | Maximum          
Debt Instrument [Line Items]          
Interest rate spread     2.00%    
v3.23.2
DEBT - BNP Funding Facility Narrative (Details) - USD ($)
 2 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jan. 08, 2023
Jun. 30, 2023
Apr. 19, 2023
Jun. 30, 2023
Dec. 31, 2022
Debt Instrument [Line Items]            
Principal amount of debt outstanding $ 11,401,000,000   $ 11,401,000,000   $ 11,401,000,000 $ 12,245,000,000
BNP Funding Facility | Minimum            
Debt Instrument [Line Items]            
Percentage of unused portion of line of credit commitment         0.00%  
BNP Funding Facility | Maximum            
Debt Instrument [Line Items]            
Percentage of unused portion of line of credit commitment         1.25%  
BNP Funding Facility | Line of Credit            
Debt Instrument [Line Items]            
Maximum borrowing capacity of line of credit 790,000,000   790,000,000   $ 790,000,000  
Term of debt maturity extension option         1 year  
Principal amount of debt outstanding $ 475,000,000   $ 475,000,000   $ 475,000,000 $ 245,000,000
BNP Funding Facility | Line of Credit | Base Rate, During Reinvestment Period            
Debt Instrument [Line Items]            
Interest rate spread   1.80% 2.80% 2.30%    
BNP Funding Facility | Line of Credit | Base Rate, After Reinvestment Period            
Debt Instrument [Line Items]            
Interest rate spread   2.30% 3.30% 2.80%    
BNP Funding Facility | Line of Credit | Secured Overnight Financing Rate (SOFR)            
Debt Instrument [Line Items]            
Interest rate spread 2.80%          
v3.23.2
DEBT - Convertible Unsecured Notes Narrative (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2023
Dec. 31, 2022
Debt Instrument [Line Items]    
Principal amount of debt $ 15,876 $ 16,221
2024 Convertible Notes | Convertible Debt    
Debt Instrument [Line Items]    
Principal amount of debt $ 403 $ 403
Stated interest rate 4.625%  
Repurchase price, percentage of principal amount 100.00%  
Debt issuance costs $ 4  
v3.23.2
DEBT - Schedule of Key Components of Convertible Notes (Details)
$ / shares in Units, $ in Millions
 6 Months Ended
Jun. 30, 2023
USD ($)
$ / shares
Dec. 31, 2022
USD ($)
Debt Instrument [Line Items]    
Principal amount of debt $ 15,876 $ 16,221
Carrying value of debt $ 11,371 12,210
2024 Convertible Notes | Convertible Debt    
Debt Instrument [Line Items]    
Conversion premium 0.150  
Closing stock price at issuance (in usd per share) | $ / shares $ 17.29  
Conversion price (in usd per share) | $ / shares $ 19.55  
Conversion rate (shares per one thousand dollar principal amount) 51.1436  
Principal amount of debt $ 403 403
Original issue discount, net of accretion 1  
Debt issuance costs, net of amortization (3)  
Carrying value of debt $ 401 $ 399
Stated interest rate 4.625%  
Effective interest rate 5.10%  
v3.23.2
DEBT - Schedule of Key Components of Unsecured Notes (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Feb. 28, 2023
Dec. 31, 2022
Debt Instrument [Line Items]      
Principal amount of debt $ 15,876   $ 16,221
2024 Notes | Senior Notes      
Debt Instrument [Line Items]      
Principal amount of debt $ 900   900
Interest Rate 4.20%    
March 2025 Notes | Senior Notes      
Debt Instrument [Line Items]      
Principal amount of debt $ 600   600
Interest Rate 4.25%    
July 2025 Notes | Senior Notes      
Debt Instrument [Line Items]      
Principal amount of debt $ 1,250   1,250
Interest Rate 3.25%    
January 2026 Notes | Senior Notes      
Debt Instrument [Line Items]      
Principal amount of debt $ 1,150   1,150
Interest Rate 3.875%    
July 2026 Notes | Senior Notes      
Debt Instrument [Line Items]      
Principal amount of debt $ 1,000   1,000
Interest Rate 2.15%    
2027 Notes | Senior Notes      
Debt Instrument [Line Items]      
Principal amount of debt $ 500   500
Interest Rate 2.875%    
2028 Notes | Senior Notes      
Debt Instrument [Line Items]      
Principal amount of debt $ 1,250   1,250
Interest Rate 2.875%    
2031 Notes | Senior Notes      
Debt Instrument [Line Items]      
Principal amount of debt $ 700   700
Interest Rate 3.20%    
2023 Notes | Senior Notes      
Debt Instrument [Line Items]      
Principal amount of debt $ 0 $ 750 $ 750
Interest Rate   3.50%  
v3.23.2
DERIVATIVE INSTRUMENTS - Schedule of Derivative Instruments (Details)
€ in Millions, £ in Millions, $ in Millions, $ in Millions, $ in Millions
Jun. 30, 2023
GBP (£)
Jun. 30, 2023
USD ($)
Jun. 30, 2023
CAD ($)
Jun. 30, 2023
EUR (€)
Jun. 30, 2023
NZD ($)
Dec. 31, 2022
GBP (£)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
CAD ($)
Dec. 31, 2022
EUR (€)
Dec. 31, 2022
NZD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets   $ 702         $ 723      
Gross Amount of Recognized Liabilities   (704)         (744)      
Maturity Date 7/28/2023, GBP                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount | £ £ 166                  
Maturity Date 7/28/2023, GBP | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets   207                
Gross Amount of Recognized Liabilities   (210)                
Maturity Date 7/19/2023, CAD                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount     $ 153              
Maturity Date 7/19/2023, CAD | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets   116                
Gross Amount of Recognized Liabilities   (116)                
Maturity Date 7/28/2023, EUR                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount | €       € 132            
Maturity Date 7/28/2023, EUR | Other Assets                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets   146                
Gross Amount of Recognized Liabilities   (143)                
Maturity Date 7/28/2023, CAD                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount     87              
Maturity Date 7/28/2023, CAD | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets   64                
Gross Amount of Recognized Liabilities   (65)                
Maturity Date 7/28/2023, CAD                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount     65              
Maturity Date 7/28/2023, CAD | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets   48                
Gross Amount of Recognized Liabilities   (49)                
Maturity Date 7/28/2023, NZD                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount         $ 59          
Maturity Date 7/28/2023, NZD | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets   36                
Gross Amount of Recognized Liabilities   (36)                
Maturity Date 7/17/2023, CAD                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount     41              
Maturity Date 7/17/2023, CAD | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets   31                
Gross Amount of Recognized Liabilities   (31)                
Maturity Date 7/10/2023, CAD                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount     $ 36              
Maturity Date 7/10/2023, CAD | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets   28                
Gross Amount of Recognized Liabilities   (28)                
Maturity Date 7/28/2023, USD                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount   33                
Maturity Date 7/28/2023, USD | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets   26                
Gross Amount of Recognized Liabilities   $ (26)                
Maturity Date 1/27/2023, CAD                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount               $ 264    
Maturity Date 1/27/2023, CAD | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets             195      
Gross Amount of Recognized Liabilities             (196)      
Maturity Date 1/18/2023, CAD                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount               242    
Maturity Date 1/18/2023, CAD | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets             178      
Gross Amount of Recognized Liabilities             (179)      
Maturity Date 1/27/2023, EUR                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount | €                 € 158  
Maturity Date 1/27/2023, EUR | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets             159      
Gross Amount of Recognized Liabilities             (169)      
Maturity Date 1/27/2023, GBP                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount | £           £ 125        
Maturity Date 1/27/2023, GBP | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets             145      
Gross Amount of Recognized Liabilities             (151)      
Maturity Date 1/27/2023, NZD                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount                   $ 59
Maturity Date 1/27/2023, NZD | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets             34      
Gross Amount of Recognized Liabilities             (37)      
Maturity Date 1/27/2023, CAD                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Notional Amount               $ 17    
Maturity Date 1/27/2023, CAD | Accounts payable and other liabilities                    
Derivative Instruments and Hedging Activities Disclosures [Line Items]                    
Gross Amount of Recognized Assets             12      
Gross Amount of Recognized Liabilities             $ (12)      
v3.23.2
DERIVATIVE INSTRUMENTS - Schedule of Net Realized and Unrealized Gains (Losses) on Derivative Instruments (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]        
Net realized gains (losses) on derivative instruments $ (3) $ 24 $ (32) $ 14
Net unrealized gains (losses) on derivative instruments (8) 7 18 21
Foreign currency forward contract        
Derivative Instruments, Gain (Loss) [Line Items]        
Net realized gains (losses) on derivative instruments (3) 24 (32) 14
Net unrealized gains (losses) on derivative instruments $ (8) $ 7 $ 18 $ 21
v3.23.2
COMMITMENTS AND CONTINGENCIES - Schedule of Loan Commitments (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Other Commitments [Line Items]    
Total unfunded commitments $ 41.0 $ 57.0
Revolving and delayed draw loan commitments    
Other Commitments [Line Items]    
Total commitments 2,448.9 2,915.8
Less: funded commitments (593.5) (526.2)
Total unfunded commitments 1,855.4 2,389.6
Less: commitments substantially at discretion of the Company 0.0 0.0
Less: unavailable commitments due to borrowing base or other covenant restrictions (14.4) (13.0)
Total net adjusted unfunded revolving and delayed draw loan commitments $ 1,841.0 $ 2,376.6
v3.23.2
COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Other Commitments [Line Items]    
Letters of credit outstanding, amount $ 52  
Letters of credit outstanding, amount, year one 37  
Letters of credit outstanding, amount, year two 14  
Letters of credit outstanding, amount, year three and thereafter 1  
Delayed Draw Loan Commitments    
Other Commitments [Line Items]    
Total commitments 793 $ 1,229
Letter of Credit    
Other Commitments [Line Items]    
Total commitments $ 359  
Minimum    
Other Commitments [Line Items]    
Remaining lease term (in years) 1 year  
Maximum    
Other Commitments [Line Items]    
Remaining lease term (in years) 4 years  
v3.23.2
COMMITMENTS AND CONTINGENCIES - Schedule of Private Equity Commitments (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Other Commitments [Line Items]    
Total unfunded commitments $ 41.0 $ 57.0
Equity investment commitments    
Other Commitments [Line Items]    
Total commitments 148.1 119.8
Less: funded commitments (64.1) (69.2)
Total unfunded commitments 84.0 50.6
Less: commitments substantially at discretion of the Company (50.9) (50.6)
Total net adjusted unfunded revolving and delayed draw loan commitments $ 33.1 $ 0.0
v3.23.2
COMMITMENTS AND CONTINGENCIES - Schedule of Components of Operating Lease Expense and Supplemental Cash Flow Information (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Commitments and Contingencies Disclosure [Abstract]        
Operating lease costs $ 2 $ 2 $ 4 $ 4
Less: sublease income (2) (2) (4) (4)
Total operating lease costs 0 0 0 0
Cash paid for amounts included in the measurement of operating lease liabilities 4 4 8 8
Operating ROU assets obtained in exchange for operating lease liabilities $ 2 $ 2 $ 4 $ 4
v3.23.2
COMMITMENTS AND CONTINGENCIES - Schedule of Supplemental Balance Sheet Information (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]    
Operating lease ROU assets $ 15 $ 20
Operating lease liabilities $ 24 $ 31
Weighted average remaining lease term (in years) 2 years 10 months 24 days 3 years 1 month 6 days
Weighted average discount rate 4.60% 4.20%
v3.23.2
COMMITMENTS AND CONTINGENCIES - Schedule of Future Minimum Lease Payments Under Operating Leases (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]    
2023 $ 8  
2024 6  
2025 6  
2026 6  
Total lease payments 26  
Less imputed interest (2)  
Operating lease liabilities $ 24 $ 31
v3.23.2
COMMITMENTS AND CONTINGENCIES - Schedule of Future Expected Rental Payments to be Received (Details)
$ in Millions
Jun. 30, 2023
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2023 $ 5
2024 4
2025 4
2026 4
Total $ 17
v3.23.2
FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Fair Value Measurements of Cash and Cash Equivalents, Restricted Cash, Investments, Derivatives, and Unfunded Revolving and Delayed Draw Loan Commitments (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Cash and cash equivalents $ 411.0 $ 303.0
Restricted cash 42.0 34.0
Total investments 21,496.5 21,779.8
Derivatives (2.0) (21.0)
Unfunded revolving and delayed draw loan commitments (41.0) (57.0)
Total    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Total investments 21,491.0 21,775.0
Level 1    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Cash and cash equivalents 411.0 303.0
Restricted cash 42.0 34.0
Total investments 73.0 54.0
Derivatives 0.0 0.0
Unfunded revolving and delayed draw loan commitments 0.0 0.0
Level 2    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Cash and cash equivalents 0.0 0.0
Restricted cash 0.0 0.0
Total investments 661.0 360.0
Derivatives (2.0) (21.0)
Unfunded revolving and delayed draw loan commitments 0.0 0.0
Level 3    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Cash and cash equivalents 0.0 0.0
Restricted cash 0.0 0.0
Total investments 20,757.0 21,361.0
Derivatives 0.0 0.0
Unfunded revolving and delayed draw loan commitments (41.0) (57.0)
Investments measured at net asset value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Total investments $ 5.0 $ 5.0
v3.23.2
FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Significant Unobservable Inputs (Details)
$ in Millions
Jun. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value $ 21,496.5 $ 21,779.8
Level 3    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 20,757.0 21,361.0
Level 3 | Yield analysis | First lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 8,529.0 9,165.0
Level 3 | Yield analysis | Second lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 3,669.0 3,841.0
Level 3 | Yield analysis | Senior subordinated loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 1,045.0 1,021.0
Level 3 | Discounted cash flow analysis | Subordinated certificates of the SDLP    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 1,237.0 1,249.0
Level 3 | Discounted cash flow analysis | Ivy Hill Asset Management, L.P.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 2,151.0 2,201.0
Level 3 | EV market multiple analysis | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 2,140.0 2,023.0
Level 3 | EV market multiple analysis | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value $ 1,986.0 $ 1,861.0
Level 3 | Market yield | Yield analysis | Minimum | First lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 7.3 7.6
Level 3 | Market yield | Yield analysis | Minimum | Second lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 10 11
Level 3 | Market yield | Yield analysis | Minimum | Senior subordinated loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 8 8
Level 3 | Market yield | Yield analysis | Maximum | First lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 21.6 26.1
Level 3 | Market yield | Yield analysis | Maximum | Second lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 23.7 32.4
Level 3 | Market yield | Yield analysis | Maximum | Senior subordinated loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 20 16.3
Level 3 | Market yield | Yield analysis | Weighted Average | First lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 12.6 12.3
Level 3 | Market yield | Yield analysis | Weighted Average | Second lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 15 14.9
Level 3 | Market yield | Yield analysis | Weighted Average | Senior subordinated loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 14.1 12.9
Level 3 | Discount rate | Discounted cash flow analysis | Minimum | Subordinated certificates of the SDLP    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 12.8 12.4
Level 3 | Discount rate | Discounted cash flow analysis | Minimum | Ivy Hill Asset Management, L.P.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 12.8 12.9
Level 3 | Discount rate | Discounted cash flow analysis | Maximum | Subordinated certificates of the SDLP    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 15 14.8
Level 3 | Discount rate | Discounted cash flow analysis | Maximum | Ivy Hill Asset Management, L.P.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 31.1 25.7
Level 3 | Discount rate | Discounted cash flow analysis | Weighted Average | Subordinated certificates of the SDLP    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 13.5 13.5
Level 3 | Discount rate | Discounted cash flow analysis | Weighted Average | Ivy Hill Asset Management, L.P.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 14.3 14.2
Level 3 | EBITDA multiple | EV market multiple analysis | Minimum | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 3 2.6
Level 3 | EBITDA multiple | EV market multiple analysis | Minimum | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 3.6 2.1
Level 3 | EBITDA multiple | EV market multiple analysis | Maximum | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 40 40.6
Level 3 | EBITDA multiple | EV market multiple analysis | Maximum | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 40.6 52.1
Level 3 | EBITDA multiple | EV market multiple analysis | Weighted Average | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 16.4 15.7
Level 3 | EBITDA multiple | EV market multiple analysis | Weighted Average | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 14.3 15.6
v3.23.2
FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Changes in Investments that use Level 3 Inputs (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Balance at the beginning $ 20,683 $ 19,375 $ 21,361 $ 19,908
Purchases 1,167 2,817 2,239 4,671
Sales (160) (659) (857) (2,206)
Repayments (932) (434) (1,995) (1,406)
PIK interest and dividends 100 80 181 147
Net accretion of discount on securities 2 2 6 5
Net transfers in and/or out of Level 3 (129) 0 (173) 0
Balance at the end 20,757 21,012 20,757 21,012
Debt and Equity Securities, Realized Gain (Loss)        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Net realized and unrealized gains (losses) $ (68) $ (24) $ (88) $ 45
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net realized gains (losses): Net realized gains (losses): Net realized gains (losses): Net realized gains (losses):
Debt and Equity Securities, Unrealized Gain (Loss)        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Net realized and unrealized gains (losses) $ 94 $ (145) $ 83 $ (152)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net unrealized gains (losses): Net unrealized gains (losses): Net unrealized gains (losses): Net unrealized gains (losses):
v3.23.2
FAIR VALUE OF FINANCIAL INSTRUMENTS - Narrative (Details) - Level 3 - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Unrealized appreciation (depreciation) on investments $ (129) $ 13 $ (129) $ 13
Net unrealized gains (losses) $ 55 $ (157) $ 47 $ (104)
v3.23.2
FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Carrying and Fair Values of Debt Obligations (Details) - USD ($)
Jun. 30, 2023
Dec. 31, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding $ 11,401,000,000 $ 12,245,000,000
Fair value disclosures of long-term debt 11,371,000,000 12,210,000,000
Line of Credit | Revolving Credit Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 1,922,000,000 2,246,000,000
Line of Credit | Revolving Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 850,000,000 800,000,000
Line of Credit | SMBC Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 401,000,000 451,000,000
Line of Credit | BNP Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 475,000,000 245,000,000
Convertible Debt | 2024 Convertible Notes (principal amount outstanding of $403)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 403,000,000 403,000,000
Senior Notes | 2023 Notes (principal amount outstanding of $0 and $750, respectively)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 0 750,000,000
Senior Notes | 2024 Notes (principal amount outstanding of $900)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 900,000,000 900,000,000
Senior Notes | March 2025 Notes (principal amount outstanding of $600)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 600,000,000 600,000,000
Senior Notes | July 2025 Notes (principal amount outstanding of $1,250)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 1,250,000,000 1,250,000,000
Senior Notes | January 2026 Notes (principal amount outstanding of $1,150)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 1,150,000,000 1,150,000,000
Senior Notes | July 2026 Notes (principal amount outstanding of $1,000)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 1,000,000,000 1,000,000,000
Senior Notes | 2027 Notes (principal amount outstanding of $500)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 500,000,000 500,000,000
Senior Notes | 2028 Notes (principal amount outstanding of $1,250)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 1,250,000,000 1,250,000,000
Senior Notes | 2031 Notes (principal amount outstanding of $700)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 700,000,000 700,000,000
Carrying value    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 11,371,000,000 12,210,000,000
Carrying value | Revolving Credit Facility | Revolving Credit Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt   2,246,000,000
Carrying value | Revolving Credit Facility | Revolving Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt   800,000,000
Carrying value | Line of Credit | SMBC Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt   451,000,000
Carrying value | Line of Credit | BNP Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt   245,000,000
Carrying value | Revolving Credit Facility | Revolving Credit Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 1,922,000,000 2,246,000,000
Carrying value | Revolving Credit Facility | Revolving Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 850,000,000 800,000,000
Carrying value | Line of Credit | SMBC Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 401,000,000 451,000,000
Carrying value | Line of Credit | BNP Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 475,000,000 245,000,000
Carrying value | Convertible Debt | 2024 Convertible Notes (principal amount outstanding of $403)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 401,000,000 399,000,000
Carrying value | Senior Notes | 2023 Notes (principal amount outstanding of $0 and $750, respectively)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 0 750,000,000
Carrying value | Senior Notes | 2024 Notes (principal amount outstanding of $900)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 899,000,000 898,000,000
Carrying value | Senior Notes | March 2025 Notes (principal amount outstanding of $600)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 598,000,000 597,000,000
Carrying value | Senior Notes | July 2025 Notes (principal amount outstanding of $1,250)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 1,256,000,000 1,258,000,000
Carrying value | Senior Notes | January 2026 Notes (principal amount outstanding of $1,150)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 1,145,000,000 1,144,000,000
Carrying value | Senior Notes | July 2026 Notes (principal amount outstanding of $1,000)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 992,000,000 991,000,000
Carrying value | Senior Notes | 2027 Notes (principal amount outstanding of $500)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 495,000,000 494,000,000
Carrying value | Senior Notes | 2028 Notes (principal amount outstanding of $1,250)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 1,247,000,000 1,247,000,000
Carrying value | Senior Notes | 2031 Notes (principal amount outstanding of $700)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 690,000,000 690,000,000
Fair value    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 10,611,000,000 11,378,000,000
Fair value | Revolving Credit Facility | Revolving Credit Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 1,922,000,000 2,246,000,000
Fair value | Revolving Credit Facility | Revolving Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 850,000,000 800,000,000
Fair value | Line of Credit | SMBC Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 401,000,000 451,000,000
Fair value | Line of Credit | BNP Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 475,000,000 245,000,000
Fair value | Convertible Debt | 2024 Convertible Notes (principal amount outstanding of $403)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 406,000,000 428,000,000
Fair value | Senior Notes | 2023 Notes (principal amount outstanding of $0 and $750, respectively)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 0 749,000,000
Fair value | Senior Notes | 2024 Notes (principal amount outstanding of $900)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 880,000,000 873,000,000
Fair value | Senior Notes | March 2025 Notes (principal amount outstanding of $600)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 574,000,000 570,000,000
Fair value | Senior Notes | July 2025 Notes (principal amount outstanding of $1,250)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 1,159,000,000 1,157,000,000
Fair value | Senior Notes | January 2026 Notes (principal amount outstanding of $1,150)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 1,069,000,000 1,059,000,000
Fair value | Senior Notes | July 2026 Notes (principal amount outstanding of $1,000)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 871,000,000 850,000,000
Fair value | Senior Notes | 2027 Notes (principal amount outstanding of $500)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 434,000,000 427,000,000
Fair value | Senior Notes | 2028 Notes (principal amount outstanding of $1,250)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 1,035,000,000 1,007,000,000
Fair value | Senior Notes | 2031 Notes (principal amount outstanding of $700)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt $ 535,000,000 $ 516,000,000
v3.23.2
STOCKHOLDERS’ EQUITY - Schedule of Common Shares Issued and Sold (Details)
$ / shares in Units, shares in Millions, $ in Millions
 6 Months Ended
Jun. 30, 2023
USD ($)
$ / shares
shares
Subsidiary, Sale of Stock [Line Items]  
Number of Shares Issued (in shares) | shares 37.4
Gross Proceeds $ 722.8
Underwriting Fees/Offering Expenses 19.0
Net Proceeds $ 703.8
Public offerings  
Subsidiary, Sale of Stock [Line Items]  
Number of Shares Issued (in shares) | shares 12.1
Gross Proceeds $ 236.8
Underwriting Fees/Offering Expenses 13.4
Net Proceeds $ 223.4
Average Offering Price Per Share (in dollars per share) | $ / shares $ 19.61
“At the market” offerings  
Subsidiary, Sale of Stock [Line Items]  
Number of Shares Issued (in shares) | shares 25.3
Gross Proceeds $ 486.0
Underwriting Fees/Offering Expenses 5.6
Net Proceeds $ 480.4
Average Offering Price Per Share (in dollars per share) | $ / shares $ 19.22
Over-allotment option one  
Subsidiary, Sale of Stock [Line Items]  
Number of Shares Issued (in shares) | shares 12.1
Average Offering Price Per Share (in dollars per share) | $ / shares $ 18.53
v3.23.2
STOCKHOLDERS’ EQUITY - Narrative (Details)
$ in Millions
Jun. 30, 2023
USD ($)
Subsidiary, Sale of Stock [Line Items]  
Authorized amount of stock repurchase program $ 1,000
Stock available for repurchase under the stock repurchase program 1,000
“At the market” offerings  
Subsidiary, Sale of Stock [Line Items]  
Maximum issuance of common stock 1,000
Stock available for issuance $ 771
v3.23.2
EARNINGS PER SHARE (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Earnings Per Share [Abstract]        
Net increase in stockholders’ equity resulting from operations $ 331 $ 111 $ 609 $ 322
Adjustment for interest expense on 2014 Convertible Notes 4 4 8 8
Net increase in stockholders’ equity resulting from operations—diluted $ 335 $ 115 $ 617 $ 330
Weighted average shares of common stock outstanding - basic (in shares) 547 494 541 487
Assumed conversion of 2024 Convertible Notes (in shares) 20 20 20 20
Weighted average shares of common stock outstanding - diluted (in shares) 567 514 561 507
Net increase in stockholders’ equity resulting from operations per share—basic (in usd per share) $ 0.61 $ 0.22 $ 1.13 $ 0.66
Net increase in stockholders’ equity resulting from operations per share—diluted (in usd per share) $ 0.59 $ 0.22 $ 1.10 $ 0.65
v3.23.2
DIVIDENDS AND DISTRIBUTIONS - Schedule of Dividends Declared and Payable (Details) - USD ($)
$ / shares in Units, $ in Millions
 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2023
Jun. 30, 2022
Dividends Payable [Line Items]            
Per share amount (in usd per share)         $ 0.96 $ 0.90
Total amount         $ 527 $ 443
April 25, 2023            
Dividends Payable [Line Items]            
Per share amount (in usd per share) $ 0.48          
Total amount $ 266          
February 7, 2023            
Dividends Payable [Line Items]            
Per share amount (in usd per share)   $ 0.48        
Total amount   $ 261        
April 26, 2022            
Dividends Payable [Line Items]            
Per share amount (in usd per share)     $ 0.42      
Total amount     $ 208      
February 9, 2022            
Dividends Payable [Line Items]            
Per share amount (in usd per share)     $ 0.03 $ 0.42    
Total amount     $ 15 $ 205    
February 9, 2022, Dividend 2            
Dividends Payable [Line Items]            
Per share amount (in usd per share)       $ 0.03    
Total amount       $ 15    
v3.23.2
DIVIDENDS AND DISTRIBUTIONS - Schedule of Dividend Reinvestment Plan Activity (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Equity [Abstract]    
Shares issued (in shares) 0.7 0.6
Average issue price per share (in dollars per share) $ 18.79 $ 20.95
Shares purchased by plan agent to satisfy dividends declared and payable during the period for stockholders (in shares) $ 0.8 $ 0.7
Average purchase price per share (in dollars per share) $ 18.35 $ 18.60
v3.23.2
RELATED PARTY TRANSACTIONS (Details) - Controlled Affiliate - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Expense Reimbursement        
Related Party Transaction [Line Items]        
Related party transaction amounts payable $ 2 $ 1 $ 3 $ 2
Proprietary Portfolio Management Software Agreement        
Related Party Transaction [Line Items]        
Related party transaction amounts payable $ 0 $ 0 $ 0 $ 0
v3.23.2
FINANCIAL HIGHLIGHTS - Schedule of Financial Highlights (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Mar. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Investment Company, Financial Highlights [Roll Forward]              
Net asset value, beginning of period (in dollars per share) $ 18.40 $ 18.96          
Issuances of common stock (in dollars per share) 0.01 0.10          
Net investment income for period (in dollars per share) 1.17 0.93          
Net realized and unrealized (losses) for period (in dollars per share) (0.04) (0.28)          
Net increase in stockholders' equity (in dollars per share) 1.14 0.75          
Total distributions to stockholders (in dollars per share) (0.96) (0.90)          
Net asset value, end of period (in dollars per share) 18.58 18.81          
Per share market value at end of period (in dollars per share) $ 18.79 $ 17.93   $ 18.47     $ 21.19
Total return based on market value 7.17% (13.45%)          
Total return based on net asset value 6.28% 3.98%          
Shares outstanding at end of period (in shares) 557 496   519      
Ratio/Supplemental Data:              
Net assets at end of period $ 10,354 $ 9,335 $ 10,049 $ 9,555 $ 9,436 $ 9,379 $ 8,868
Ratio of operating expenses to average net assets 12.37% 9.67%          
Ratio of net investment income to average net assets 12.55% 9.97%          
Portfolio turnover rate 23.00% 36.00%          
v3.23.2
FINANCIAL HIGHLIGHTS - Schedule of Financial Highlights, Additional Information (Details) - $ / shares
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Dec. 31, 2021
Investment Company, Financial Highlights [Line Items]        
Additional dividends declared (in dollars per share)   $ 0.06    
Per share market value at end of period (in dollars per share) $ 18.79 17.93 $ 18.47 $ 21.19
Total distributions to stockholders (in dollars per share) $ 0.96 $ 0.90    
Ratio of operating expenses to average net assets 12.37% 9.67%    
Base management fees        
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 3.19% 3.25%    
Income based fees and capital gains incentive fees        
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 3.08% 1.76%    
Cost of borrowing        
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 5.67% 4.25%    
Other operating expenses        
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 0.43% 0.41%