v3.22.2.2
Cover - shares
 9 Months Ended
Sep. 30, 2022
Oct. 25, 2022
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2022  
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 $0.001 per share  
Trading Symbol ARCC  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   508,259,293
Entity Central Index Key 0001287750  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus Q3  
v3.22.2.2
CONSOLIDATED BALANCE SHEET - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Investments at fair value    
Total investments at fair value $ 21,338.5 $ 20,009.5
Cash and cash equivalents 257.0 372.0
Restricted cash 105.0 114.0
Interest receivable 160.0 142.0
Receivable for open trades 21.0 80.0
Other assets 135.0 99.0
Operating lease right-of-use asset 21.0 27.0
Total assets 22,038.0 20,843.0
LIABILITIES    
Debt 11,816.0 11,020.0
Base management fees payable 78.0 69.0
Income based fees payable 63.0 67.0
Capital gains incentive fees payable 72.0 161.0
Interest and facility fees payable 76.0 100.0
Payable to participants 105.0 114.0
Payable for open trades 141.0 216.0
Accounts payable and other liabilities 139.0 111.0
Secured borrowings 79.0 74.0
Operating lease liabilities 33.0 43.0
Total liabilities 12,602.0 11,975.0
Commitments and contingencies (Note 7)
STOCKHOLDERS’ EQUITY    
Common stock, par value $0.001 per share, 700 and 600 common shares authorized, respectively; 508 and 468 common shares issued and outstanding, respectively 0.0 0.0
Capital in excess of par value 9,370.0 8,553.0
Accumulated undistributed earnings 66.0 315.0
Total stockholders’ equity 9,436.0 8,868.0
Total liabilities and stockholders’ equity $ 22,038.0 $ 20,843.0
NET ASSETS PER SHARE (in dollars per share) $ 18.56 $ 18.96
Non-controlled/non-affiliate    
Investments at fair value    
Total investments at fair value $ 17,227.0 $ 17,056.0
Non-controlled affiliate    
Investments at fair value    
Total investments at fair value 357.7 373.1
Controlled affiliate    
Investments at fair value    
Total investments at fair value $ 3,753.5 $ 2,580.4
v3.22.2.2
CONSOLIDATED STATEMENT OF OPERATIONS - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
INVESTMENT INCOME:        
PIK interest income     $ 97.0 $ 121.0
Total investment income $ 537.0 $ 442.0 1,456.0 1,291.0
EXPENSES:        
Interest and credit facility fees 120.0 94.0 314.0 267.0
Base management fees 78.0 65.0 226.0 184.0
Income based fees 63.0 53.0 171.0 158.0
Capital gains incentive fees (37.0) 30.0 (64.0) 133.0
Administrative fees 3.0 4.0 9.0 11.0
Other general and administrative 8.0 7.0 20.0 18.0
Total expenses 235.0 253.0 676.0 771.0
NET INVESTMENT INCOME BEFORE INCOME TAXES 302.0 189.0 780.0 520.0
Income tax expense, including excise tax 14.0 5.0 37.0 21.0
NET INVESTMENT INCOME 288.0 184.0 743.0 499.0
REALIZED AND UNREALIZED GAINS (LOSSES) ON INVESTMENTS, FOREIGN CURRENCY AND OTHER TRANSACTIONS:        
Foreign currency and other transactions 22.0 26.0 32.0 9.0
Net realized gains 0.0 149.0 55.0 267.0
Net unrealized losses (gains) on investments, foreign currency and other transactions 29.0 (11.0) 50.0 5.0
Net unrealized gains (losses) (184.0) 1.0 (324.0) 462.0
Net realized and unrealized gains (losses) on investments, foreign currency and other transactions (184.0) 150.0 (269.0) 729.0
Realized loss on extinguishment of debt 0.0 0.0 (48.0) (43.0)
NET INCREASE IN STOCKHOLDERS’ EQUITY RESULTING FROM OPERATIONS $ 104.0 $ 334.0 $ 426.0 $ 1,185.0
NET INCOME PER COMMON SHARE (see Note 10)        
Basic (in usd per share) $ 0.21 $ 0.73 $ 0.86 $ 2.68
Diluted (in usd per share) $ 0.21 $ 0.73 $ 0.86 $ 2.68
WEIGHTED AVERAGE SHARES OF COMMON STOCK OUTSTANDING (see Note 10)        
Basic (in shares) 503,000,000 453,000,000 492,000,000 441,000,000
Diluted (in shares) 523,000,000 453,000,000 512,000,000 441,000,000
Non-controlled/non-affiliate        
INVESTMENT INCOME:        
Interest income (excluding payment-in-kind (“PIK”) interest income) $ 300.0 $ 230.0 $ 786.0 $ 656.0
PIK interest income 28.0 42.0 84.0 95.0
Capital structuring service fees 26.0 53.0 81.0 179.0
Dividend income 52.0 31.0 140.0 86.0
Other income 11.0 11.0 29.0 28.0
Total investment income 417.0 367.0 1,120.0 1,044.0
REALIZED AND UNREALIZED GAINS (LOSSES) ON INVESTMENTS, FOREIGN CURRENCY AND OTHER TRANSACTIONS:        
Net realized gains (losses): (51.0) 82.0 (2.0) 139.0
Net unrealized gains (losses): (225.0) 35.0 (426.0) 388.0
Non-controlled affiliate        
INVESTMENT INCOME:        
Interest income (excluding payment-in-kind (“PIK”) interest income) 2.0 2.0 5.0 5.0
PIK interest income 2.0 1.0 4.0 3.0
Dividend income 0.0 0.0 0.8 0.0
Other income 0.0 0.0 0.3 1.0
Total investment income 4.0 3.0 10.0 9.0
REALIZED AND UNREALIZED GAINS (LOSSES) ON INVESTMENTS, FOREIGN CURRENCY AND OTHER TRANSACTIONS:        
Net realized gains (losses): 29.0 1.0 6.3 58.0
Net unrealized gains (losses): 30.0 6.0 61.9 13.0
Controlled affiliate        
INVESTMENT INCOME:        
Interest income (excluding payment-in-kind (“PIK”) interest income) 49.0 39.0 126.0 129.0
PIK interest income 4.0 3.0 9.0 23.0
Capital structuring service fees 6.0 6.0 13.0 11.0
Dividend income 55.0 23.0 173.0 72.0
Other income 2.0 1.0 5.1 3.0
Total investment income 116.0 72.0 326.0 238.0
REALIZED AND UNREALIZED GAINS (LOSSES) ON INVESTMENTS, FOREIGN CURRENCY AND OTHER TRANSACTIONS:        
Net realized gains (losses): 0.0 40.0 19.1 61.0
Net unrealized gains (losses): $ (18.0) $ (29.0) $ (10.4) $ 56.0
v3.22.2.2
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, 2020     423,000,000        
Beginning balance at Dec. 31, 2020 $ 7,176   $ 0 $ 7,656   $ (480)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuances of common stock (net of offering and underwriting costs) (in shares)     14,000,000        
Issuances of common stock (net of offering and underwriting costs) 249     249      
Shares issued in connection with dividend reinvestment plan 9     9      
Net investment income 144         144  
Net realized gains on investments, foreign currency, extinguishment of debt and other transactions 16         16  
Net unrealized gains on investments, foreign currency and other transactions 213         213  
Dividends declared and payable (175)         (175)  
Ending balance (in shares) at Mar. 31, 2021     437,000,000        
Ending balance at Mar. 31, 2021 7,632   $ 0 7,914   (282)  
Beginning balance (in shares) at Dec. 31, 2020     423,000,000        
Beginning balance at Dec. 31, 2020 7,176   $ 0 7,656   (480)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net investment income 499            
Net realized gains on investments, foreign currency, extinguishment of debt and other transactions 267            
Net unrealized gains on investments, foreign currency and other transactions $ 462            
Shares issued in connection with dividend reinvestment plan (in shares) 1,500,000            
Ending balance (in shares) at Sep. 30, 2021     461,000,000        
Ending balance at Sep. 30, 2021 $ 8,537   $ 0 8,373   164  
Beginning balance (in shares) at Dec. 31, 2020     423,000,000        
Beginning balance at Dec. 31, 2020 7,176   $ 0 7,656   (480)  
Ending balance (in shares) at Dec. 31, 2021     468,000,000        
Ending balance at Dec. 31, 2021 $ 8,868 $ (2) $ 0 8,553 $ (4) 315 $ 2
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Accounting Standards Update [Extensible Enumeration] Accounting Standards Update 2020-06            
Beginning balance (in shares) at Mar. 31, 2021     437,000,000        
Beginning balance at Mar. 31, 2021 $ 7,632   $ 0 7,914   (282)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuances of common stock (net of offering and underwriting costs) (in shares)     7,000,000        
Issuances of common stock (net of offering and underwriting costs) 135     135      
Shares issued in connection with dividend reinvestment plan 10     10      
Net investment income 171         171  
Net realized gains on investments, foreign currency, extinguishment of debt and other transactions 59         59  
Net unrealized gains on investments, foreign currency and other transactions 248         248  
Dividends declared and payable (177)         (177)  
Shares issued in connection with dividend reinvestment plan (in shares)     1,000,000        
Ending balance (in shares) at Jun. 30, 2021     445,000,000        
Ending balance at Jun. 30, 2021 8,078   $ 0 8,059   19  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuances of common stock (net of offering and underwriting costs) (in shares)     15,000,000        
Issuances of common stock (net of offering and underwriting costs) 304     304      
Shares issued in connection with dividend reinvestment plan 10     10      
Net investment income 184         184  
Net realized gains on investments, foreign currency, extinguishment of debt and other transactions 149         149  
Net unrealized gains on investments, foreign currency and other transactions 1         1  
Dividends declared and payable (189)         (189)  
Shares issued in connection with dividend reinvestment plan (in shares)     1,000,000        
Ending balance (in shares) at Sep. 30, 2021     461,000,000        
Ending balance at Sep. 30, 2021 8,537   $ 0 8,373   164  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuances of common stock (net of offering and underwriting costs) (in shares)     6,000,000        
Issuances of common stock (net of offering and underwriting costs) 131     131      
Shares issued in connection with dividend reinvestment plan 9     9      
Net investment income 242         242  
Net realized gains on investments, foreign currency, extinguishment of debt and other transactions 16         16  
Net unrealized gains on investments, foreign currency and other transactions 124         124  
Dividends declared and payable (191)         (191)  
Shares issued in connection with dividend reinvestment plan (in shares)     1,000,000        
Tax reclassification of stockholders’ equity in accordance with GAAP 0     40   (40)  
Ending balance (in shares) at Dec. 31, 2021     468,000,000        
Ending 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        
Issuances 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 on investments, foreign currency, extinguishment of debt and other transactions 10         10  
Net unrealized gains 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]              
Net investment income 743            
Net realized gains on investments, foreign currency, extinguishment of debt and other transactions 55            
Net unrealized gains on investments, foreign currency and other transactions $ (324)            
Shares issued in connection with dividend reinvestment plan (in shares) 600,000            
Ending balance (in shares) at Sep. 30, 2022     508,000,000        
Ending balance at Sep. 30, 2022 $ 9,436   $ 0 9,370   66  
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        
Issuances of common stock (net of offering and underwriting costs) 68     68      
Net investment income 257         257  
Net realized gains on investments, foreign currency, extinguishment of debt and other transactions (3)         (3)  
Net unrealized gains 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        
Issuances of common stock (net of offering and underwriting costs) 231     231      
Net investment income 288         288  
Net realized gains on investments, foreign currency, extinguishment of debt and other transactions 0            
Net unrealized gains on investments, foreign currency and other transactions (184)         (184)  
Dividends declared and payable           (234)  
Ending balance (in shares) at Sep. 30, 2022     508,000,000        
Ending balance at Sep. 30, 2022 $ 9,436   $ 0 $ 9,370   $ 66  
v3.22.2.2
CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
OPERATING ACTIVITIES:    
NET INCREASE IN STOCKHOLDERS’ EQUITY RESULTING FROM OPERATIONS $ 426 $ 1,185
Adjustments to reconcile net increase in stockholders’ equity resulting from operations:    
Net realized gains on investments, foreign currency and other transactions (55) (267)
Net unrealized losses (gains) on investments, foreign currency and other transactions 324 (462)
Realized loss on extinguishment of debt 48 43
Net accretion of discount on investments (8) (11)
PIK interest income (97) (121)
Collections of PIK interest 30 101
PIK dividends (126) (61)
Collections of PIK dividends 27 122
Amortization of debt issuance costs 22 19
Net amortization of discount (premium) on notes payable (3) 3
Proceeds from sales and repayments of investments and other transactions 5,565 6,738
Purchases of investments (7,048) (8,026)
Changes in operating assets and liabilities:    
Interest receivable (12) 3
Receivable from participants 0 38
Other assets 48 14
Operating lease right-of-use asset 6 8
Base management fees payable 9 9
Income based fees payable (4) (87)
Capital gains incentive fees payable (89) 133
Interest and facility fees payable (24) (17)
Payable to participants (9) (52)
Accounts payable and other liabilities (19) 7
Operating lease liabilities (10) (11)
Net cash used in operating activities (999) (692)
FINANCING ACTIVITIES:    
Borrowings on debt 4,990 12,131
Repayments and repurchases of debt (4,248) (10,752)
Debt issuance costs (15) (49)
Net proceeds from issuance of common stock 808 687
Dividends paid (665) (512)
Secured borrowings, net 5 74
Net cash provided by financing activities 875 1,579
CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH (124) 887
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD 486 326
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD 362 1,213
Supplemental Information:    
Interest paid during the period 303 250
Taxes, including excise tax, paid during the period 33 23
Dividends declared and payable during the period $ 677 $ 541
v3.22.2.2
CONSOLIDATED SCHEDULE OF INVESTMENTS - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Coupon [1]   9.50%
Amortized Cost $ 21,468.5 $ 19,810.0
Fair Value $ 21,338.5 $ 20,009.5
% of Net Assets 226.18% 225.65%
Software & Services    
Amortized Cost $ 4,924.8 $ 4,308.2
Fair Value $ 4,816.4 $ 4,378.1
% of Net Assets 51.05% 49.37%
Health Care Services    
Amortized Cost $ 2,231.9 $ 2,133.9
Fair Value $ 2,155.8 $ 2,157.1
% of Net Assets 22.85% 24.33%
Commercial & Professional Services    
Amortized Cost $ 1,768.3 $ 1,820.0
Fair Value $ 1,746.8 $ 1,833.4
% of Net Assets 18.52% 20.68%
Diversified Financials    
Amortized Cost $ 2,512.7 $ 1,363.8
Fair Value $ 2,631.3 $ 1,505.3
% of Net Assets 27.89% 16.98%
Insurance Services    
Amortized Cost $ 1,101.3 $ 1,144.0
Fair Value $ 1,081.3 $ 1,167.3
% of Net Assets 11.46% 13.16%
Investment Funds and Vehicles    
Amortized Cost $ 1,152.9 $ 1,020.0
Fair Value $ 1,166.2 $ 1,032.4
% of Net Assets 12.36% 11.64%
Capital Goods    
Amortized Cost $ 818.9 $ 945.3
Fair Value $ 854.0 $ 957.0
% of Net Assets 9.05% 10.79%
Automobiles & Components    
Amortized Cost $ 736.4 $ 933.1
Fair Value $ 674.5 $ 910.5
% of Net Assets 7.15% 10.27%
Power Generation    
Amortized Cost $ 953.2 $ 877.8
Fair Value $ 1,007.2 $ 898.9
% of Net Assets 10.68% 10.14%
Consumer Durables & Apparel    
Amortized Cost $ 925.8 $ 918.7
Fair Value $ 838.8 $ 874.4
% of Net Assets 8.89% 9.86%
Consumer Services    
Amortized Cost $ 825.9 $ 790.4
Fair Value $ 857.6 $ 780.3
% of Net Assets 9.09% 8.80%
Retailing and Distribution    
Amortized Cost $ 467.6 $ 563.1
Fair Value $ 476.2 $ 562.2
% of Net Assets 5.05% 6.34%
Media & Entertainment    
Amortized Cost $ 442.2 $ 434.7
Fair Value $ 468.8 $ 448.2
% of Net Assets 4.97% 5.05%
Food & Beverage    
Amortized Cost $ 508.5 $ 446.6
Fair Value $ 508.8 $ 445.3
% of Net Assets 5.39% 5.02%
Materials    
Amortized Cost $ 282.7 $ 389.2
Fair Value $ 267.8 $ 392.4
% of Net Assets 2.84% 4.43%
Pharmaceuticals, Biotechnology & Life Sciences    
Amortized Cost $ 465.3 $ 394.2
Fair Value $ 490.1 $ 386.8
% of Net Assets 5.19% 4.36%
Energy    
Amortized Cost $ 397.6 $ 363.4
Fair Value $ 427.2 $ 372.2
% of Net Assets 4.53% 4.20%
Food & Staples Retailing    
Amortized Cost $ 281.1 $ 269.4
Fair Value $ 300.1 $ 277.8
% of Net Assets 3.18% 3.13%
Technology Hardware & Equipment    
Amortized Cost $ 227.4 $ 203.9
Fair Value $ 220.7 $ 203.0
% of Net Assets 2.34% 2.29%
Transportation    
Amortized Cost $ 123.2 $ 148.3
Fair Value $ 128.1 $ 149.6
% of Net Assets 1.36% 1.69%
Household & Personal Products    
Amortized Cost $ 107.0 $ 137.3
Fair Value $ 75.2 $ 121.9
% of Net Assets 0.80% 1.37%
Education    
Amortized Cost $ 150.4 $ 158.7
Fair Value $ 88.3 $ 113.0
% of Net Assets 0.94% 1.27%
Telecommunication Services    
Amortized Cost $ 63.4 $ 46.0
Fair Value $ 57.3 $ 42.4
% of Net Assets 0.61% 0.48%
AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC    
Amortized Cost $ 237.1 $ 91.5
Fair Value 235.0 91.5
Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua    
Amortized Cost 9.8 24.8
Fair Value 12.1 28.3
APG Intermediate Holdings Corporation and APG Holdings, LLC    
Amortized Cost 23.1 23.3
Fair Value 21.6 25.0
Appriss Health, LLC and Appriss Health Intermediate Holdings, Inc.    
Amortized Cost 43.3 48.0
Fair Value 43.3 48.0
Apptio, Inc.    
Amortized Cost 43.9 63.9
Fair Value 43.5 63.9
Banyan Software Holdings, LLC and Banyan Software, LP    
Amortized Cost 15.1 19.4
Fair Value 16.1 19.4
Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc.    
Amortized Cost 121.7 110.9 [2]
Fair Value 113.2 112.0 [2]
Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P.    
Amortized Cost 120.1 80.6
Fair Value 116.3 81.1
CoreLogic, Inc. and T-VIII Celestial Co-Invest LP    
Amortized Cost 218.7 215.4
Fair Value 198.0 233.6
Cority Software Inc., IQS, Inc. and Cority Parent, Inc.    
Amortized Cost   12.0
Fair Value   12.4
Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc.    
Amortized Cost 298.2 270.1
Fair Value 271.8 267.7
Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P.    
Amortized Cost 166.8 151.4
Fair Value 153.8 151.5
Denali Holdco LLC and Denali Apexco LP    
Amortized Cost 3.8 39.8
Fair Value 3.8 39.4
Diligent Corporation and Diligent Preferred Issuer, Inc.    
Amortized Cost 53.8 68.1
Fair Value 52.9 69.1
Drilling Info Holdings, Inc. and Titan DI Preferred Holdings, Inc.    
Amortized Cost 66.0 62.0
Fair Value 65.1 62.9
Elemica Parent, Inc. & EZ Elemica Holdings, Inc.    
Amortized Cost 76.0 89.3
Fair Value 75.9 90.2
EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P.    
Amortized Cost 181.1 181.1
Fair Value 185.9 185.9
EpiServer Inc. and Episerver Sweden Holdings AB    
Amortized Cost 6.1 10.7
Fair Value 5.3 10.7
eResearch Technology, Inc. and Astorg VII Co-Invest ERT    
Amortized Cost 51.1 56.1
Fair Value 48.6 58.4
ExtraHop Networks, Inc.    
Amortized Cost 19.6 17.7
Fair Value 19.6 17.4
FM:Systems Group, LLC    
Amortized Cost 4.6 6.1
Fair Value 4.6 6.1
Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC    
Amortized Cost 21.5 21.2
Fair Value 30.4 29.6
Genesis Acquisition Co. and Genesis Ultimate Holding Co.    
Amortized Cost 72.5 72.6
Fair Value 72.4 71.0
Huskies Parent, Inc., GI Insurity Parent LLC, and GI Insurity Topco LP    
Amortized Cost 173.4 206.4
Fair Value 155.3 203.8
Insightful Science    
Amortized Cost   121.9
Fair Value   121.2
IV Rollover Holdings, LLC    
Amortized Cost 2.1 2.1
Fair Value 2.1 2.3
Ministry Brands Holdings, LLC and RCP MB Investments B, L.P.    
Amortized Cost 42.2 82.3
Fair Value 40.7 81.6
Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands)    
Amortized Cost   211.0
Fair Value   213.4
MMIT Holdings, LLC    
Amortized Cost 17.2 32.5
Fair Value 17.3 32.2
MRI Software LLC    
Amortized Cost 62.6 56.0
Fair Value 60.7 56.0
PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC    
Amortized Cost 175.8 169.4
Fair Value 174.0 170.4
Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC    
Amortized Cost 19.0 35.2
Fair Value 29.1 42.5
ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P.    
Amortized Cost 7.1 5.5
Fair Value 7.0 5.5
Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc.    
Amortized Cost 10.3 7.5
Fair Value 16.2 17.0
Project Essential Bidco, Inc. and Project Essential Super Parent, Inc.    
Amortized Cost 67.2 65.1
Fair Value 64.2 64.3
Project Potter Buyer, LLC and Project Potter Parent, L.P.    
Amortized Cost 77.9 79.0
Fair Value 83.0 79.9
Proofpoint, Inc.    
Amortized Cost 35.4 35.4
Fair Value 35.5 35.6
QF Holdings, Inc.    
Amortized Cost 14.9 23.6
Fair Value 14.9 23.6
Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC    
Amortized Cost 12.0 32.0
Fair Value 13.8 33.0
Regent Education, Inc.    
Amortized Cost 0.0 0.0
Fair Value 0.0 0.0
RMS Holdco II, LLC & RMS Group Holdings, Inc.    
Amortized Cost 44.9 28.1
Fair Value 45.0 27.9
Smarsh Inc., MobileGuard, LLC, Actiance, Inc. and Skywalker TopCo, LLC    
Amortized Cost   18.1
Fair Value   18.4
Storable, Inc. and EQT IX Co-Investment (E) SCSP    
Amortized Cost 59.3 49.0
Fair Value 58.2 49.6
Sundance Group Holdings, Inc.    
Amortized Cost 17.2 16.0
Fair Value 17.3 16.2
TCP Hawker Intermediate LLC    
Amortized Cost 41.2 45.4
Fair Value 40.8 45.4
The Ultimate Software Group, Inc. and H&F Unite Partners, L.P.    
Amortized Cost 13.5 12.6
Fair Value 14.4 15.1
Absolute Dental Group LLC and Absolute Dental Equity, LLC    
Amortized Cost 57.8 58.2
Fair Value 67.4 63.9
ADG, LLC and RC IV GEDC Investor LLC    
Amortized Cost 119.5 110.1
Fair Value 119.3 115.5
Bearcat Buyer, Inc. and Bearcat Parent, Inc.    
Amortized Cost   86.4
Fair Value   93.0
Comprehensive EyeCare Partners, LLC    
Amortized Cost 0.6 3.6
Fair Value 0.6 3.6
CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC    
Amortized Cost 77.6 99.0
Fair Value 83.5 104.9
GHX Ultimate Parent Corporation, Commerce Parent, Inc. and Commerce Topco, LLC    
Amortized Cost 129.8 128.0
Fair Value 139.2 146.2
Global Medical Response, Inc. and GMR Buyer Corp.    
Amortized Cost 129.8 96.4
Fair Value 116.3 97.5
HealthEdge Software, Inc.    
Amortized Cost 84.8 79.2
Fair Value 84.8 79.2
Honor Technology, Inc.    
Amortized Cost 2.5 2.5
Fair Value 2.4 2.6
JDC Healthcare Management, LLC    
Amortized Cost 35.1 35.5
Fair Value 24.8 29.6
MCH Holdings, Inc., MC Acquisition Holdings I, LLC and Privia Health Group, Inc.    
Amortized Cost   110.2
Fair Value   110.8
Napa Management Services Corporation and ASP NAPA Holdings, LLC    
Amortized Cost 3.0 75.7
Fair Value 4.9 77.3
NMN Holdings III Corp. and NMN Holdings LP    
Amortized Cost 5.0 3.0
Fair Value 4.4 2.8
NueHealth Performance, LLC    
Amortized Cost   18.7
Fair Value   18.7
Olympia Acquisition, Inc. and Olympia TopCo, L.P.    
Amortized Cost 65.7 63.1
Fair Value 48.6 44.1
OMH-HealthEdge Holdings, LLC    
Amortized Cost 41.3 41.5
Fair Value 41.3 41.5
Pathway Vet Alliance LLC and Jedi Group Holdings LLC    
Amortized Cost 82.3 82.3
Fair Value 79.0 84.2
Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP    
Amortized Cost 85.2 97.1
Fair Value 87.1 105.2
Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc.    
Amortized Cost 248.1 214.1
Fair Value 229.5 214.1
Synergy HomeCare Franchising, LLC and NP/Synergy Holdings, LLC    
Amortized Cost 13.6 15.8
Fair Value 14.0 16.3
Teligent, Inc    
Amortized Cost   77.0
Fair Value   38.8
U.S. Anesthesia Partners, Inc. & U.S. Anesthesia Partners Holdings, Inc.    
Amortized Cost 160.7 160.7
Fair Value 157.7 159.2
VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P.    
Amortized Cost 13.9 13.9
Fair Value 13.8 13.9
Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC    
Amortized Cost 8.4 8.4
Fair Value 9.2 7.9
Aero Operating LLC    
Amortized Cost 37.5 37.8
Fair Value 35.2 37.8
Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP    
Amortized Cost 79.2 81.5
Fair Value 88.4 85.3
Cozzini Bros., Inc. and BH-Sharp Holdings LP    
Amortized Cost   15.4
Fair Value   12.8
DTI Holdco, Inc. and OPE DTI Holdings, Inc.    
Amortized Cost 7.5 12.6
Fair Value 6.5 9.3
HAI Acquisition Corporation and Aloha Topco, LLC    
Amortized Cost 62.5 62.8
Fair Value 63.3 63.4
HH-Stella, Inc. and Bedrock Parent Holdings, LP    
Amortized Cost 9.5 5.6
Fair Value 9.1 6.0
IRI Holdings, Inc., IRI Group Holdings, Inc. and IRI Parent, L.P.    
Amortized Cost   202.2
Fair Value   221.2
Kellermeyer Bergensons Services, LLC    
Amortized Cost 81.8 81.6
Fair Value 78.7 81.9
KPS Global LLC and Cool Group LLC    
Amortized Cost 17.1 17.1
Fair Value 19.3 16.5
Laboratories Bidco LLC and Laboratories Topco LLC    
Amortized Cost 53.8 61.3
Fair Value 51.6 62.0
Lakers Buyer, Inc. and Lakers Parent LLC    
Amortized Cost   99.6
Fair Value   101.1
Marmic Purchaser, LLC and Marmic Topco, L.P.    
Amortized Cost 31.0 36.5
Fair Value 31.0 36.8
Microstar Logistics LLC, Microstar Global Asset Management LLC, MStar Holding Corporation and Kegstar USA Inc.    
Amortized Cost 159.9 159.9
Fair Value 162.2 156.9
Nest Topco Borrower Inc., KKR Nest Co-Invest L.P., and NBLY 2021-1    
Amortized Cost 128.8 128.8
Fair Value 127.4 127.6
North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC    
Amortized Cost 23.8 21.0
Fair Value 25.6 21.3
Petroleum Service Group LLC    
Amortized Cost 47.9 45.4
Fair Value 47.9 45.4
Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC    
Amortized Cost 105.5 101.7
Fair Value 104.7 100.7
PS Operating Company LLC and PS OP Holdings LLC (fka QC Supply, LLC)    
Amortized Cost 26.7 25.1
Fair Value 25.4 25.1
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 11.4 40.6
Fair Value 11.5 40.1
Rodeo AcquisitionCo LLC    
Amortized Cost 17.9 17.5
Fair Value 17.4 17.2
SSE Buyer, Inc., Supply Source Enterprises, Inc., Impact Products LLC, The Safety Zone, LLC and SSE Parent, LP    
Amortized Cost 23.1 23.6
Fair Value 18.3 21.1
Stealth Holding LLC and UCIT Online Security Inc.    
Amortized Cost 58.0 51.3
Fair Value 58.0 51.3
Tyden Group Holding Corp.    
Amortized Cost   2.4
Fair Value   4.3
Visual Edge Technology, Inc.    
Amortized Cost 124.0 122.5
Fair Value 92.4 110.6
VLS Recovery Services, LLC    
Amortized Cost   15.3
Fair Value   15.3
XIFIN, Inc. and ACP Charger Co-Invest LLC    
Amortized Cost 40.1 59.4
Fair Value 42.7 61.5
BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC    
Amortized Cost 9.6 8.9
Fair Value 8.9 8.8
eCapital Finance Corp.    
Amortized Cost 141.5 61.4
Fair Value 140.0 61.4
EP Wealth Advisors, LLC    
Amortized Cost 2.4 0.7
Fair Value 2.4 0.7
Ivy Hill Asset Management, L.P.    
Amortized Cost 1,808.6 781.0
Fair Value 1,958.2 935.8
Joyce Lane Capital LLC and Joyce Lane Financing SPV LLC (fka Ciena Capital LLC)    
Amortized Cost   0.3
Fair Value   0.3
LS DE LLC and LM LSQ Investors LLC    
Amortized Cost 43.3 43.3
Fair Value 43.2 43.5
Monica Holdco (US) Inc.    
Amortized Cost 2.6 2.6
Fair Value 2.6 2.6
Priority Holdings, LLC and Priority Technology Holdings, Inc.    
Amortized Cost 78.7 104.2
Fair Value 80.9 107.5
Rialto Management Group, LLC    
Amortized Cost 0.5 17.9
Fair Value 0.5 17.9
TA/WEG Holdings, LLC    
Amortized Cost 1.9 9.4
Fair Value 1.9 9.4
Kaseya Inc. and Knockout Intermediate Holdings I Inc    
Amortized Cost 205.8  
Fair Value 201.7  
Magnesium BorrowerCo, Inc. and Magnesium Co-Invest SCSp    
Amortized Cost 211.9  
Fair Value 206.7  
Majesco and Magic Topco, L.P.    
Amortized Cost 33.4 45.0
Fair Value 33.9 46.2
The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP    
Amortized Cost 39.3 39.6
Fair Value 39.5 39.7
AQ Sunshine, Inc.    
Amortized Cost 49.6 42.4
Fair Value 49.6 42.4
Ardonagh Midco 2 plc and Ardonagh Midco 3 plc    
Amortized Cost 178.4 199.5
Fair Value 166.3 204.1
Galway Borrower LLC    
Amortized Cost 35.9 59.1
Fair Value 35.1 58.5
High Street Buyer, Inc. and High Street Holdco LLC    
Amortized Cost 167.8 171.7
Fair Value 170.2 189.0
K2 Insurance Services, LLC and K2 Holdco LP    
Amortized Cost 53.9 52.6
Fair Value 55.9 53.4
NSM Insurance Group, LLC    
Amortized Cost   13.3
Fair Value   13.3
People Corporation    
Amortized Cost 70.0 62.3
Fair Value 63.3 62.4
RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc.    
Amortized Cost   33.4
Fair Value   33.4
SCM Insurance Services Inc.    
Amortized Cost   81.1
Fair Value   80.4
THG Acquisition, LLC    
Amortized Cost 21.5 38.8
Fair Value 21.5 38.8
Arrowhead Holdco Company and Arrowhead GS Holdings, Inc.    
Amortized Cost 19.0 36.2
Fair Value 20.5 37.5
Cadence Aerospace, LLC    
Amortized Cost 77.8 76.3
Fair Value 76.5 74.3
DFS Holding Company, Inc.    
Amortized Cost 176.1 176.7
Fair Value 176.1 167.8
Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP    
Amortized Cost 36.9 35.5
Fair Value 35.1 34.0
EPS NASS Parent, Inc.    
Amortized Cost 0.8 31.4
Fair Value 0.8 31.4
Harvey Tool Company, LLC    
Amortized Cost 23.5 28.6
Fair Value 23.3 28.3
Imaging Business Machines, L.L.C. and Scanner Holdings Corporation    
Amortized Cost 17.9 17.9
Fair Value 57.8 53.0
MB Aerospace Holdings II Corp.    
Amortized Cost 103.5 103.1
Fair Value 99.5 93.8
NCWS Intermediate, Inc. and NCWS Holdings LP    
Amortized Cost 160.3 201.4
Fair Value 163.5 205.2
Kene Acquisition, Inc. and Kene Holdings, L.P.    
Amortized Cost 45.2 45.6
Fair Value 46.0 46.4
Senior Direct Lending Program, LLC    
Amortized Cost 1,121.0 987.3
Fair Value 1,121.0 987.3
Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP.    
Amortized Cost 45.0 59.2
Fair Value 55.1 58.8
Automotive Keys Group, LLC and Automotive Keys Investor, LLC    
Amortized Cost 5.0 14.5
Fair Value 3.3 15.1
Continental Acquisition Holdings, Inc.    
Amortized Cost 41.6 69.7
Fair Value 40.8 69.7
Eckler Industries, Inc. and Eckler Purchaser LLC    
Amortized Cost 56.4 48.4
Fair Value 2.3 23.1
Faraday&Future Inc., FF Inc., Faraday SPE, LLC and Faraday Future Intelligent Electric Inc.    
Amortized Cost   82.2
Fair Value   81.5
Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC    
Amortized Cost 88.6 82.2
Fair Value 77.8 75.4
Mac Lean-Fogg Company and MacLean-Fogg Holdings, L.L.C.    
Amortized Cost 161.9 217.6
Fair Value 162.0 217.9
Mavis Tire Express Services Topco Corp., Metis HoldCo, Inc., and Metis TopCo, LP    
Amortized Cost 100.2 112.0
Fair Value 112.7 113.9
McLaren Group Limited    
Amortized Cost 30.8 27.8
Fair Value 29.3 33.6
SK SPV IV, LLC    
Amortized Cost 1.2 1.2
Fair Value 0.0 0.0
Sun Acquirer Corp. and Sun TopCo, LP    
Amortized Cost 67.6 99.3
Fair Value 67.2 100.1
Heelstone Renewable Energy, LLC    
Amortized Cost 158.0 62.5
Fair Value 191.5 69.4
Navisun LLC and Navisun Holdings LLC    
Amortized Cost   130.8
Fair Value   143.7
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 146.4 142.6
Fair Value 136.2 142.6
Sunrun Xanadu Issuer 2019-1, LLC and Sunrun Xanadu Holdings 2019-1, LLC    
Amortized Cost 71.7 69.7
Fair Value 67.4 69.7
Centric Brands LLC and Centric Brands GP LLC    
Amortized Cost 84.4 73.0
Fair Value 84.4 81.1
DRS Holdings III, Inc. and DRS Holdings I, Inc.    
Amortized Cost 64.1 85.0
Fair Value 62.4 87.8
Implus Footcare, LLC    
Amortized Cost 123.3 123.7
Fair Value 110.9 113.9
Lew's Intermediate Holdings, LLC    
Amortized Cost 2.3 2.8
Fair Value 2.1 2.8
Rawlings Sporting Goods Company, Inc. and Easton Diamond Sports, LLC    
Amortized Cost 49.9 102.0
Fair Value 49.9 102.0
Reef Lifestyle, LLC    
Amortized Cost 59.3 38.8
Fair Value 58.3 38.8
S Toys Holdings LLC (fka The Step2 Company, LLC)    
Amortized Cost 0.0 0.0
Fair Value 0.2 0.2
Shock Doctor, Inc. and Shock Doctor Holdings, LLC    
Amortized Cost 11.9 31.9
Fair Value 8.8 23.1
SVP-Singer Holdings Inc. and SVP-Singer Holdings LP    
Amortized Cost   69.8
Fair Value   66.8
Totes Isotoner Corporation and Totes Ultimate Holdco, Inc.    
Amortized Cost 9.8 9.8
Fair Value 3.3 3.9
Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP    
Amortized Cost 154.3 145.3
Fair Value 152.5 138.9
American Residential Services L.L.C. and Aragorn Parent Holdings LP    
Amortized Cost 59.2 59.2
Fair Value 61.9 60.1
ATI Restoration, LLC    
Amortized Cost 37.4 43.9
Fair Value 37.4 43.9
Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L.    
Amortized Cost 157.3 155.6
Fair Value 157.4 144.4
Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC    
Amortized Cost 163.3 174.0
Fair Value 176.8 187.5
Garden Fresh Restaurant Corp. and GFRC Holdings LLC    
Amortized Cost   0.0
Fair Value   0.0
Jim N Nicks Management, LLC    
Amortized Cost   17.5
Fair Value   17.5
LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC    
Amortized Cost 26.8 9.7
Fair Value 38.0 9.6
Movati Athletic (Group) Inc.    
Amortized Cost   5.4
Fair Value   5.0
OTG Management, LLC    
Amortized Cost 28.4 28.4
Fair Value 13.1 15.8
Pyramid Management Advisors, LLC and Pyramid Investors, LLC    
Amortized Cost 35.4 35.2
Fair Value 35.3 31.9
Redwood Services, LLC and Redwood Services Holdco, LLC    
Amortized Cost 16.2 19.2
Fair Value 27.0 25.1
SV-Burton Holdings, LLC & LBC Breeze Holdings LLC    
Amortized Cost 13.3 15.3
Fair Value 13.6 15.2
Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P.    
Amortized Cost 6.0 5.4
Fair Value 5.6 3.6
The Arcticom Group, LLC and AMCP Mechanical Holdings, LP    
Amortized Cost 56.1 54.1
Fair Value 58.3 53.6
Atlas Intermediate III, L.L.C.    
Amortized Cost 0.5 2.3
Fair Value 0.5 2.3
Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc.    
Amortized Cost 16.7 16.8
Fair Value 17.2 17.2
GPM Investments, LLC and ARKO Corp.    
Amortized Cost 21.4 21.4
Fair Value 27.4 20.2
Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC    
Amortized Cost 44.1 68.2
Fair Value 49.6 71.0
McKenzie Creative Brands, LLC    
Amortized Cost 91.9 90.0
Fair Value 91.0 90.0
Moon Valley Nursery of Arizona Retail, LLC, Moon Valley Nursery Farm Holdings, LLC, Moon Valley Nursery RE Holdings LLC, and Stonecourt IV Partners, LP    
Amortized Cost 98.5 175.9
Fair Value 101.4 175.1
North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC    
Amortized Cost 30.3 27.3
Fair Value 27.4 26.2
Reddy Ice LLC    
Amortized Cost 78.6 79.2
Fair Value 77.8 79.2
US Salt Investors, LLC and Emerald Lake Pearl Acquisition-A, L.P.    
Amortized Cost 27.2 40.9
Fair Value 25.9 40.5
Aventine Intermediate LLC & Aventine Holdings II LLC    
Amortized Cost 46.8 42.2
Fair Value 45.6 41.8
MMax Investment Partners, Inc. (d/b/a Professional Fighters League) and PFL MMA, Inc.    
Amortized Cost   15.7
Fair Value   15.8
Production Resource Group, L.L.C. and PRG III, LLC    
Amortized Cost 66.7 60.5
Fair Value 96.5 56.3
Storm Investment S.a.r.l.    
Amortized Cost 88.0 88.0
Fair Value 76.7 83.8
The Teaching Company Holdings, Inc.    
Amortized Cost 1.1 1.1
Fair Value 3.1 4.1
American Seafoods Group LLC and American Seafoods Partners LLC    
Amortized Cost 7.5 7.5
Fair Value 23.8 19.1
Berner Food & Beverage, LLC    
Amortized Cost   0.7
Fair Value   0.7
Bragg Live Food Products, LLC and SPC Investment Co., L.P.    
Amortized Cost 52.7 52.6
Fair Value 50.4 47.8
CHG PPC Parent LLC & PPC CHG Blocker LLC    
Amortized Cost 97.6 97.6
Fair Value 92.8 96.7
Florida Food Products, LLC    
Amortized Cost 86.2 76.1
Fair Value 83.8 75.4
Gehl Foods, LLC and GF Parent LLC    
Amortized Cost   3.0
Fair Value   0.0
KC Culinarte Intermediate, LLC    
Amortized Cost 64.4 64.6
Fair Value 60.2 59.6
Teasdale Foods, Inc. and Familia Group Holdings Inc.    
Amortized Cost 75.8 78.3
Fair Value 65.1 73.6
Triton Water Holdings, Inc.    
Amortized Cost 1.1 1.1
Fair Value 1.0 1.1
Watermill Express, LLC and Watermill Express Holdings, LLC    
Amortized Cost 22.5 22.4
Fair Value 22.2 22.1
ASP-r-pac Acquisition Co LLC and ASP-r-pac Holdings LP    
Amortized Cost 19.7 67.1
Fair Value 18.7 66.6
H-Food Holdings, LLC and Matterhorn Parent, LLC    
Amortized Cost 105.6 153.4
Fair Value 88.4 154.8
IntraPac International LLC and IntraPac Canada Corporation    
Amortized Cost   31.8
Fair Value   31.8
Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V.    
Amortized Cost 28.5 51.1
Fair Value 28.0 51.9
Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC    
Amortized Cost 77.0 55.6
Fair Value 73.6 55.9
Abzena Holdings, Inc. and Astro Group Holdings Ltd.    
Amortized Cost 65.8 46.7
Fair Value 66.6 47.0
Alcami Corporation and ACM Holdings I, LLC    
Amortized Cost 147.3 141.2
Fair Value 151.4 116.5
Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc.    
Amortized Cost 103.4 93.0
Fair Value 102.9 92.7
NMC Skincare Intermediate Holdings II, LLC    
Amortized Cost 36.7 38.5
Fair Value 35.7 38.1
North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P.    
Amortized Cost 66.3 65.6
Fair Value 86.3 83.5
TerSera Therapeutics LLC    
Amortized Cost 8.9 8.9
Fair Value 8.9 9.0
Murchison Oil and Gas, LLC and Murchison Holdings, LLC    
Amortized Cost 116.5 65.9
Fair Value 120.6 68.4
VPROP Operating, LLC and V SandCo, LLC    
Amortized Cost 75.5 70.4
Fair Value 107.0 77.5
Balrog Acquisition, Inc., Balrog Topco, Inc. and Balrog Parent, L.P.    
Amortized Cost 60.2 57.8
Fair Value 60.1 57.6
DecoPac, Inc. and KCAKE Holdings Inc.    
Amortized Cost 172.6 160.5
Fair Value 170.6 160.9
FS Squared Holding Corp. and FS Squared, LLC    
Amortized Cost 11.2 11.2
Fair Value 28.3 19.3
SFE Intermediate Holdco LLC    
Amortized Cost 23.1 16.4
Fair Value 23.1 16.4
Chariot Buyer LLC    
Amortized Cost 137.9 137.1
Fair Value 129.4 135.7
Micromeritics Instrument Corp.    
Amortized Cost 24.0 32.0
Fair Value 24.0 32.0
Wildcat BuyerCo, Inc. and Wildcat Parent, LP    
Amortized Cost 20.2 29.5
Fair Value 23.1 30.5
Commercial Trailer Leasing, Inc.    
Amortized Cost 85.9 112.7
Fair Value 85.7 112.7
Shur-Co Acquisition, Inc. and Shur-Co HoldCo, Inc.    
Amortized Cost 37.3 35.6
Fair Value 42.4 36.9
CDI Holdings III Corp. and CDI Holdings I Corp.    
Amortized Cost 9.9 9.9
Fair Value 8.3 9.9
Premier Specialties, Inc. and RMCF V CIV XLIV, L.P.    
Amortized Cost 33.4 32.2
Fair Value 29.4 31.4
Rug Doctor, LLC and RD Holdco Inc.    
Amortized Cost 36.1 36.0
Fair Value 9.9 21.0
Walnut Parent, Inc.    
Amortized Cost 14.8 34.8
Fair Value 14.6 34.8
Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc.    
Amortized Cost 37.6 36.7
Fair Value 38.3 36.3
Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc.    
Amortized Cost   107.8
Fair Value   40.4
Revalize, Inc.    
Amortized Cost 1.6  
Fair Value 1.5  
Smarsh Inc. and Skywalker TopCo, LLC    
Amortized Cost 16.9  
Fair Value 18.9  
Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C.    
Amortized Cost 40.0  
Fair Value 40.3  
WebPT, Inc.    
Amortized Cost 48.3  
Fair Value 48.3  
AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP    
Amortized Cost 222.8  
Fair Value 207.6  
Center for Autism and Related Disorders, LLC    
Amortized Cost 7.1  
Fair Value 3.5  
Convey Health Solutions, Inc.    
Amortized Cost 2.8  
Fair Value 2.8  
RB Holdings InterCo, LLC    
Amortized Cost 12.9  
Fair Value 12.7  
Lifescan Global Corporation    
Amortized Cost 14.2  
Fair Value 12.5  
RTI Surgical, Inc. and Pioneer Surgical Technology, Inc.    
Amortized Cost 32.4 33.5
Fair Value 31.7 33.5
SiroMed Physician Services, Inc. and SiroMed Equity Holdings, LLC    
Amortized Cost 15.1 16.3
Fair Value 11.4 10.6
SM Wellness Holdings, Inc. and SM Holdco, Inc.    
Amortized Cost 8.0 8.0
Fair Value 9.8 9.6
KeyStone Sub-debt HoldCo, LLC    
Amortized Cost 67.3 62.0
Fair Value 74.9 63.9
CCS-CMGC Holdings, Inc.    
Amortized Cost 33.6 33.8
Fair Value 31.1 33.3
WSHP FC Acquisition LLC    
Amortized Cost 83.7 75.5
Fair Value 82.9 75.5
Emergency Communications Network, LLC    
Amortized Cost 54.4  
Fair Value 49.1  
Aventiv Technologies, LLC and Securus Technologies Holdings, Inc.    
Amortized Cost 9.0  
Fair Value 8.2  
National College of Business and Technology Inc. & Leeds IV Advisors, Inc.    
Amortized Cost 103.7  
Fair Value 40.9  
Precision Concepts International LLC and Precision Concepts Canada Corporation    
Amortized Cost 21.1  
Fair Value 21.1  
Coyote Buyer, LLC    
Amortized Cost 1.0  
Fair Value 0.9  
ZB Holdco LLC & ZB Parent LLC    
Amortized Cost 6.1  
Fair Value 6.7  
AI Fire Buyer, Inc. and AI Fire Parent LLC    
Amortized Cost 95.5  
Fair Value 95.8  
Verista, Inc.    
Amortized Cost 1.5  
Fair Value 1.9  
Covaris Intermediate 3, LLC & Covaris Parent, LLC    
Amortized Cost 15.0  
Fair Value 16.0  
Applied Technical Services, LLC    
Amortized Cost 1.4  
Fair Value 1.5  
Professional Fighters League, LLC and PFL MMA, Inc.    
Amortized Cost 18.0  
Fair Value 19.2  
Elevation Services Parent Holdings, LLC    
Amortized Cost 20.5  
Fair Value 20.5  
NAS, LLC and Nationwide Marketing Group, LLC    
Amortized Cost 10.5 9.4
Fair Value 10.5 9.4
North Haven Stack Buyer, LLC    
Amortized Cost 7.0  
Fair Value 6.9  
Schill Landscaping and Lawn Care Services LLC and Landscape Parallel Partners, L.P.    
Amortized Cost 12.2 15.3
Fair Value 16.0 15.3
VRC Companies, LLC    
Amortized Cost 5.8  
Fair Value 5.9  
Foundation Risk Partners, Corp.    
Amortized Cost 167.3  
Fair Value 167.3  
Gotham Greens Holdings, PBC    
Amortized Cost 31.9  
Fair Value 31.7  
YE Brands Holdings, LLC    
Amortized Cost 16.2  
Fair Value 15.9  
SageSure Holdings, LLC & Insight Catastrophe Group, LLC    
Amortized Cost 29.7  
Fair Value 32.3  
CMG HoldCo, LLC and CMG Buyer Holdings, Inc.    
Amortized Cost 28.4  
Fair Value 27.9  
Belfor Holdings, Inc.    
Amortized Cost 7.2  
Fair Value 7.1  
Sunrun Luna Holdco 2021, LLC    
Amortized Cost 74.7  
Fair Value 74.7  
SVP-Singer Holdings Inc. and SVP-Singer Holdings LP    
Amortized Cost 69.6  
Fair Value 57.0  
BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC    
Amortized Cost 2.5  
Fair Value 2.6  
Johnnie-O Inc. and Johnnie-O Holdings Inc.    
Amortized Cost 23.5  
Fair Value 25.3  
Borrower R365 Holdings LLC    
Amortized Cost 17.0  
Fair Value 17.3  
GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC    
Amortized Cost 101.5  
Fair Value 99.6  
Community Brands ParentCo, LLC    
Amortized Cost 15.7  
Fair Value 17.4  
GI Ranger Intermediate LLC    
Amortized Cost 40.6  
Fair Value 40.2  
Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC    
Amortized Cost 26.7  
Fair Value 26.9  
ESHA Research, LLC and RMCF VI CIV XLVIII, L.P.    
Amortized Cost 11.6  
Fair Value 11.5  
The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC    
Amortized Cost 13.4  
Fair Value 13.3  
Forescout Technologies, Inc.    
Amortized Cost 35.2  
Fair Value 35.5  
Moonraker AcquisitionCo LLC and    
Amortized Cost 31.2  
Fair Value 30.7  
Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp    
Amortized Cost 21.4  
Fair Value 21.0  
TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P.,    
Amortized Cost 330.8  
Fair Value 301.2  
Wellness AcquisitionCo, Inc.    
Amortized Cost 0.1  
Fair Value 0.1  
AHR Funding Holdings, Inc. And AHR Parent Holdings, L.P.    
Amortized Cost 45.9  
Fair Value 45.5  
SOC Telemed, Inc. and PSC Spark Holdings, LP    
Amortized Cost 64.4  
Fair Value 64.2  
Argenbright Holdings V, LLC and Amberstone Security Group Limited    
Amortized Cost 25.8  
Fair Value 25.4  
ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, LLC    
Amortized Cost 22.5  
Fair Value 22.3  
LJP Purchaser, Inc. and LJP Topco, LP    
Amortized Cost 13.6  
Fair Value 13.4  
GNZ Energy Bidco Limited and Galileo Co-investment Trust I    
Amortized Cost 41.4  
Fair Value 36.7  
The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P.    
Amortized Cost 223.3  
Fair Value 219.0  
Benefytt Technologies, Inc.    
Amortized Cost 28.8  
Fair Value 23.6  
Patriot Growth Insurance Services, LLC    
Amortized Cost 14.4  
Fair Value 14.2  
Ferrellgas, L.P. and Ferrelgas Partners, L.P.    
Amortized Cost 74.4  
Fair Value 74.9  
Opal Fuels LLC and Opal Fuels Inc.    
Amortized Cost 47.3  
Fair Value 53.3  
Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings, LLC    
Amortized Cost 14.6  
Fair Value 14.5  
ESCP PPG Holdings, LLC    
Amortized Cost 5.8  
Fair Value 2.4  
Prime Buyer, L.L.C.    
Amortized Cost 1.2  
Fair Value 1.9  
Radius Aerospace, Inc. and Radius Aerospace Europe Limited    
Amortized Cost 0.9  
Fair Value 0.9  
ITI Holdings, Inc.    
Amortized Cost 40.0  
Fair Value 39.7  
Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C.    
Amortized Cost 28.7 29.1
Fair Value 33.4 $ 30.2
Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc.    
Amortized Cost 28.6  
Fair Value 28.9  
GF Parent LLC    
Amortized Cost 3.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: 2U, Inc., First lien senior secured loan    
Coupon 8.87% [3] 6.50% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 54.6 [4],[5],[6] $ 55.0 [2],[7],[8]
Amortized Cost 54.0 [4],[5],[6] 54.1 [2],[7],[8]
Fair Value 54.6 [4],[5],[6] 55.0 [2],[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 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 7.6 [5],[9] 111.4 [2],[10]
Amortized Cost 0.0 [5],[9] 0.0 [2],[10]
Fair Value $ 0.0 [5],[9] $ 0.0 [2],[10]
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, First lien senior secured revolving loan 1    
Coupon 7.81% [3] 7.50% [1]
Coupon, PIK 0.50% [3] 0.50% [1]
Spread 5.25% [3] 4.25% [1]
Principal $ 9.0 [4],[5] $ 9.6 [2],[7]
Amortized Cost 9.0 [4],[5] 9.6 [2],[7]
Fair Value $ 8.7 [4],[5] $ 9.5 [2],[7]
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, First lien senior secured revolving loan 2    
Coupon 10.00% [3] 5.75% [1]
Coupon, PIK 0.50% [3] 0.50% [1]
Spread 3.75% [3] 4.75% [1]
Principal $ 3.9 [4],[5] $ 2.3 [2],[7]
Amortized Cost 3.9 [4],[5] 2.3 [2],[7]
Fair Value $ 3.8 [4],[5] $ 2.3 [2],[7]
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, Membership units    
Shares 3,000,000 3,000,000
Amortized Cost $ 3.0 $ 3.0 [2]
Fair Value $ 0.0 $ 0.0 [2]
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, Second lien senior secured loan    
Coupon, PIK 6.56% [3] 11.00% [1]
Spread 3.44% [3] 10.00% [1]
Principal $ 125.6 [5] $ 115.3 [2],[7]
Amortized Cost 103.6 [5] 95.2 [2],[7]
Fair Value $ 106.8 [5] $ 103.7 [2],[7]
Investment, Identifier [Axis]: AHR Funding Holdings, Inc. and AHR Parent Holdings, LP, Preferred units    
Coupon, PIK [3] 8.00%  
Shares 9,900  
Amortized Cost [5] $ 10.0  
Fair Value [5] $ 9.9  
Investment, Identifier [Axis]: AHR Funding Holdings, Inc. and AHR Parent Holdings, LP, Class B common units    
Shares 100,000  
Amortized Cost [5] $ 0.1  
Fair Value [5] $ 0.1  
Investment, Identifier [Axis]: AHR Funding Holdings, Inc. and AHR Parent Holdings, LP, Series A preferred shares    
Coupon, PIK [3] 12.75%  
Shares 35,000  
Amortized Cost [5] $ 35.8  
Fair Value [5] $ 35.5  
Investment, Identifier [Axis]: AI Aqua Merger Sub, Inc., First lien senior secured loan    
Coupon 6.35% [3] 4.50% [1]
Spread 3.75% [3] 4.00% [1]
Principal $ 1.0 [4],[5],[11] $ 0.9 [2],[7],[12]
Amortized Cost 1.0 [4],[5],[11] 0.9 [2],[7],[12]
Fair Value $ 0.9 [4],[5],[11] 0.9 [2],[7],[12]
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Common units    
Shares 46,990  
Amortized Cost [5] $ 4.7  
Fair Value [5] $ 5.0  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured loan    
Coupon [3] 8.67%  
Spread [3] 6.00%  
Principal [4],[5] $ 26.9  
Amortized Cost [4],[5] 26.9  
Fair Value [4],[5] $ 26.9  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, First lien senior secured revolving loan    
Coupon [3] 9.17%  
Spread [3] 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    
Coupon, PIK [3] 14.70%  
Spread [3] 11.00%  
Principal [4],[5] $ 44.0  
Amortized Cost [4],[5] 44.0  
Fair Value [4],[5] $ 44.0  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Second lien senior secured loan 2    
Coupon, PIK [3] 14.70%  
Spread [3] 11.00%  
Principal [4],[5] $ 9.9  
Amortized Cost [4],[5] 9.9  
Fair Value [4],[5] $ 9.9  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Second lien senior secured loan 3    
Coupon, PIK [3] 14.70%  
Spread [3] 11.00%  
Principal [4],[5] $ 9.6  
Amortized Cost [4],[5] 9.6  
Fair Value [4],[5] 9.6  
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC    
Fair Value $ 21.6 $ 25.0
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, Class A membership units    
Shares 9,750,000 9,750,000
Amortized Cost $ 9.8 [5] $ 9.8 [2]
Fair Value $ 8.4 [5] $ 11.5 [2]
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan    
Coupon 8.15% [3] 6.75% [1]
Spread 5.25% [3] 5.25% [1]
Principal $ 13.3 [4],[5] $ 13.5 [2],[7]
Amortized Cost 13.3 [4],[5] 13.5 [2],[7]
Fair Value 13.2 [4],[5] $ 13.5 [2],[7]
Investment, Identifier [Axis]: API Commercial Inc., API Military Inc., and API Space Intermediate, Inc., First lien senior secured loan    
Principal [5],[9] 7.4  
Amortized Cost [5],[9] 3.6  
Fair Value [5],[9] $ 3.7  
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [7]   $ 8.6
Amortized Cost [7]   8.6
Fair Value [7]   $ 8.6
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 1    
Coupon [3] 10.20%  
Spread [3] 6.25%  
Principal [4],[5] $ 19.3  
Amortized Cost [4],[5] 19.3  
Fair Value [4],[5] $ 19.3  
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 2    
Coupon 10.42% [3] 7.00% [1]
Spread 6.25% [3] 6.00% [1]
Principal $ 14.8 [4],[5] $ 13.3 [2],[7]
Amortized Cost 14.8 [4],[5] 13.3 [2],[7]
Fair Value $ 14.8 [4],[5] $ 13.3 [2],[7]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 3    
Coupon 10.42% [3] 7.00% [1]
Spread 6.25% [3] 6.00% [1]
Principal $ 8.5 [4],[5] $ 20.2 [2],[7]
Amortized Cost 8.5 [4],[5] 20.2 [2],[7]
Fair Value $ 8.5 [4],[5] $ 20.2 [2],[7]
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 4    
Coupon [3] 10.42%  
Spread [3] 6.25%  
Principal [4],[5] $ 5.6  
Amortized Cost [4],[5] 5.6  
Fair Value [4],[5] $ 5.6  
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured revolving loan    
Coupon 10.42% [3] 7.00% [1]
Spread 6.25% [3] 6.00% [1]
Principal $ 1.4 [4],[5],[13] $ 0.3 [2],[7],[14]
Amortized Cost 1.4 [4],[5],[13] 0.3 [2],[7],[14]
Fair Value 1.4 [4],[5],[13] $ 0.3 [2],[7],[14]
Investment, Identifier [Axis]: ARES 2007-3R, Subordinated notes    
Principal [6] 20.0  
Amortized Cost [6] 0.0  
Fair Value [6] $ 0.1  
Investment, Identifier [Axis]: ASP Dream Acquisition Co LLC, First lien senior secured loan    
Coupon [3] 7.38%  
Spread [3] 4.25%  
Principal [4],[5] $ 0.0  
Amortized Cost [4],[5] 0.0  
Fair Value [4],[5] $ 0.0  
Investment, Identifier [Axis]: ASP-r-pac Acquisition CO LLC and ASP-r-pac Holdings LP, Class A units    
Shares 195,990  
Amortized Cost [5] $ 19.6  
Fair Value [5] $ 18.6  
Investment, Identifier [Axis]: ASP-r-pac Acquisition CO LLC and ASP-r-pac Holdings LP, First lien senior secured loan    
Coupon [3] 9.67%  
Spread [3] 6.00%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: ASP-r-pac Acquisition Co LLC and ASP-r-pac Holdings LP, Class A units    
Shares   195,990
Amortized Cost [2]   $ 19.6
Fair Value [2]   $ 19.6
Investment, Identifier [Axis]: ASP-r-pac Acquisition Co LLC and ASP-r-pac Holdings LP, First lien senior secured loan    
Coupon [1]   6.75%
Spread [1]   6.00%
Principal [2],[7]   $ 46.3
Amortized Cost [2],[7]   46.3
Fair Value [2],[7]   $ 45.8
Investment, Identifier [Axis]: ASP-r-pac Acquisition Co LLC and ASP-r-pac Holdings LP, First lien senior secured revolving loan    
Coupon [1]   6.75%
Spread [1]   6.00%
Principal [2],[7]   $ 1.2
Amortized Cost [2],[7]   1.2
Fair Value [2],[7]   $ 1.2
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan    
Coupon 7.79% [3] 6.00% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 33.1 [4],[5] $ 33.3 [7]
Amortized Cost 33.1 [4],[5] 33.3 [7]
Fair Value $ 33.1 [4],[5] $ 33.3 [7]
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 2    
Coupon [3] 8.37%  
Spread [3] 5.00%  
Principal [4],[5] $ 3.2  
Amortized Cost [4],[5] 3.2  
Fair Value [4],[5] $ 3.2  
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured revolving loan    
Coupon 10.25% [3] 6.00% [1]
Spread 4.00% [3] 5.00% [1]
Principal $ 1.1 [4],[5],[13] $ 8.1 [2],[7],[14]
Amortized Cost 1.1 [4],[5],[13] 8.1 [2],[7],[14]
Fair Value 1.1 [4],[5],[13] $ 8.1 [2],[7],[14]
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured revolving loan 2    
Coupon [1]   7.25%
Spread [1]   4.00%
Principal [7]   $ 2.5
Amortized Cost [7]   2.5
Fair Value [7]   2.5
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC    
Fair Value $ 67.4 $ 63.9
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, Class A common units    
Shares 7,617,280 7,617,280
Amortized Cost $ 4.7 [5] $ 4.7 [2]
Fair Value $ 14.3 [5] $ 10.4 [2]
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured loan    
Coupon 12.68% [3] 10.00% [1]
Coupon, PIK 5.00% [3] 5.00% [1]
Spread 9.00% [3] 9.00% [1]
Principal $ 51.4 [4],[5] $ 49.5 [2],[7]
Amortized Cost 51.4 [4],[5] 49.5 [2],[7]
Fair Value $ 51.4 [4],[5] $ 49.5 [2],[7]
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured revolving loan    
Coupon 14.25% [3] 11.25% [1]
Coupon, PIK 5.00% [3] 5.00% [1]
Spread 8.00% [3] 8.00% [1]
Principal $ 1.7 [4],[5] $ 4.0 [2],[7]
Amortized Cost 1.7 [4],[5] 4.0 [2],[7]
Fair Value $ 1.7 [4],[5] $ 4.0 [2],[7]
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., A ordinary shares    
Shares 2,476,744  
Amortized Cost [5],[6] $ 5.7  
Fair Value [5],[6] $ 6.5  
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., Class A ordinary shares    
Shares   1,237,500
Amortized Cost [2]   $ 2.5
Fair Value [2]   $ 2.8
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., First lien senior secured loan    
Coupon 13.69% [3] 10.50% [1]
Coupon, PIK [3] 5.75%  
Spread 10.50% [3] 9.50% [1]
Principal $ 46.2 [4],[5],[6] $ 13.7 [2],[7]
Amortized Cost 46.2 [4],[5],[6] 13.7 [2],[7]
Fair Value $ 46.2 [4],[5],[6] $ 13.7 [2],[7]
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., First lien senior secured loan 2    
Coupon 11.01% [3] 11.50% [1]
Coupon, PIK 5.51% [3] 5.75% [1]
Spread 9.50% [3] 10.50% [1]
Principal $ 13.9 [4],[5],[6] $ 30.5 [2],[7]
Amortized Cost 13.9 [4],[5],[6] 30.5 [2],[7]
Fair Value $ 13.9 [4],[5],[6] $ 30.5 [2],[7]
Investment, Identifier [Axis]: Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC, Class A common units    
Shares 236,358 236,358
Amortized Cost $ 4.3 $ 4.3
Fair Value $ 5.1 $ 4.0
Investment, Identifier [Axis]: Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC, First lien senior secured revolving loan    
Coupon 12.17% [3] 10.00% [1]
Spread 8.50% [3] 9.00% [1]
Principal $ 4.1 [4],[5] $ 4.1 [2],[7]
Amortized Cost 4.1 [4],[5] 4.1 [2],[7]
Fair Value $ 4.1 [4],[5] $ 3.9 [2],[7]
Investment, Identifier [Axis]: Acrisure, LLC and Acrisure Finance, Inc., Senior subordinated loan    
Coupon [3] 7.00%  
Principal [5],[11] $ 0.5  
Amortized Cost [5],[11] 0.5  
Fair Value [5],[11] $ 0.5  
Investment, Identifier [Axis]: Advarra Holdings, Inc., First lien senior secured loan    
Coupon [3] 8.12%  
Spread [3] 5.75%  
Principal [4],[5] $ 4.1  
Amortized Cost [4],[5] 4.1  
Fair Value [4],[5] $ 4.0  
Investment, Identifier [Axis]: Aero Operating LLC, First lien senior secured loan    
Coupon 9.57% [3] 8.00% [1]
Spread 7.00% [3] 6.50% [1]
Principal $ 36.3 [4],[5] $ 36.6 [7]
Amortized Cost 36.3 [4],[5] 36.6 [7]
Fair Value $ 34.1 [4],[5] $ 36.6 [7]
Investment, Identifier [Axis]: Aero Operating LLC, First lien senior secured loan 2    
Coupon 9.57% [3] 8.00% [1]
Spread 7.00% [3] 6.50% [1]
Principal $ 1.2 [4],[5] $ 1.2 [2],[7]
Amortized Cost 1.2 [4],[5] 1.2 [2],[7]
Fair Value $ 1.1 [4],[5] $ 1.2 [2],[7]
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan    
Coupon [1]   6.25%
Spread [1]   5.00%
Principal [7]   $ 64.0
Amortized Cost [7]   64.0
Fair Value [7]   $ 64.0
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan 1    
Coupon [3] 8.81%  
Spread [3] 5.75%  
Principal [4],[5] $ 120.9  
Amortized Cost [4],[5] 118.6  
Fair Value [4],[5] $ 118.4  
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan 2    
Coupon [3] 8.33%  
Spread [3] 5.75%  
Principal [4],[5] $ 63.5  
Amortized Cost [4],[5] 63.5  
Fair Value [4],[5] $ 62.2  
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, Senior subordinated loan    
Coupon, PIK 12.58% [3] 12.75% [1]
Spread [3] 10.00%  
Principal $ 55.0 [4],[5] $ 27.5 [2]
Amortized Cost 55.0 [4],[5] 27.5 [2]
Fair Value $ 54.4 [4],[5] $ 27.5 [2]
Investment, Identifier [Axis]: Aimbridge Acquisition Co., Inc., Second lien senior secured loan    
Coupon 10.06% [3] 7.60% [1]
Spread 7.50% [3] 7.50% [1]
Principal $ 22.5 [5] $ 22.5 [2]
Amortized Cost 22.3 [5] 22.2 [2]
Fair Value $ 21.6 [5] $ 21.4 [2]
Investment, Identifier [Axis]: Alcami Corporation and ACM Holdings I, LLC, Common units    
Shares 4,347,590 3,663,533
Amortized Cost $ 41.3 [5] $ 35.0 [2]
Fair Value $ 44.9 [5] $ 19.5 [2]
Investment, Identifier [Axis]: Alcami Corporation and ACM Holdings I, LLC, First lien senior secured loan    
Coupon 7.37% [3] 4.39% [1]
Spread 4.25% [3] 4.25% [1]
Principal $ 29.0 [5] $ 29.2
Amortized Cost 28.9 [5] 29.1
Fair Value $ 29.0 [5] $ 28.0
Investment, Identifier [Axis]: Alcami Corporation and ACM Holdings I, LLC, Second lien senior secured loan    
Coupon 11.12% [3] 8.14% [1]
Spread 8.00% [3] 8.00% [1]
Principal $ 77.5 [5] $ 77.5 [2]
Amortized Cost 77.1 [5] 77.1 [2]
Fair Value $ 77.5 [5] $ 69.0 [2]
Investment, Identifier [Axis]: Alera Group, Inc., First lien senior secured loan    
Coupon 9.05% [3] 6.25% [1]
Spread 6.00% [3] 5.50% [1]
Principal $ 75.8 [4],[5] $ 96.6 [2],[7]
Amortized Cost 75.8 [4],[5] 96.6 [2],[7]
Fair Value $ 75.0 [4],[5] $ 95.6 [2],[7]
Investment, Identifier [Axis]: Alteon Health, LLC. First lien senior secured loan    
Coupon [1]   7.50%
Spread [1]   6.50%
Principal [2],[7]   $ 2.8
Amortized Cost [2],[7]   2.8
Fair Value [2],[7]   $ 2.8
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, Second lien senior secured loan    
Coupon 12.17% [3] 9.50% [1]
Spread 8.50% [3] 8.50% [1]
Principal $ 56.4 [4],[5] $ 56.4 [2],[7]
Amortized Cost 56.4 [4],[5] 56.4 [2],[7]
Fair Value $ 56.4 [4],[5] $ 56.4 [2],[7]
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, Series A preferred units    
Coupon, PIK 10.00% [3] 10.00% [1]
Shares 2,531,500 2,531,500
Amortized Cost $ 2.8 [5] $ 2.8 [2]
Fair Value $ 5.5 [5] $ 3.7 [2]
Investment, Identifier [Axis]: American Seafoods Group LLC and American Seafoods Partners LLC, Class A units    
Shares 77,922 77,922
Amortized Cost $ 0.1 [5] $ 0.1 [2]
Fair Value $ 0.2 [5] $ 0.2 [2]
Investment, Identifier [Axis]: American Seafoods Group LLC and American Seafoods Partners LLC, Warrant to purchase Class A units    
Shares   7,422,078
Amortized Cost [2]   $ 7.4
Fair Value [2]   $ 18.9
Investment, Identifier [Axis]: American Seafoods Group LLC and American Seafoods Partners LLC, Warrant to purchase up to 7,422,078 Class A units    
Shares 7,422,078  
Amortized Cost [5] $ 7.4  
Fair Value [5] $ 23.6  
Investment, Identifier [Axis]: Amryt Pharmaceuticals, Inc., First lien senior secured loan    
Coupon [3] 8.98%  
Spread [3] 6.75%  
Principal [4],[5],[6] $ 12.7  
Amortized Cost [4],[5],[6] 12.7  
Fair Value [4],[5],[6] $ 12.7  
Investment, Identifier [Axis]: Amynta Agency Borrower Inc. and Amynta Warranty Borrower Inc., First lien senior secured loan    
Coupon 7.62% [3] 4.60% [1]
Spread 4.50% [3] 4.50% [1]
Principal $ 2.3 [5] $ 1.0 [2]
Amortized Cost 2.3 [5] 1.0 [2]
Fair Value $ 2.2 [5] $ 1.0 [2]
Investment, Identifier [Axis]: Anaplan, Inc., First lien senior secured loan    
Coupon [3] 9.53%  
Spread [3] 6.50%  
Principal [4],[5] $ 21.8  
Amortized Cost [4],[5] 21.8  
Fair Value [4],[5] $ 21.4  
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan    
Coupon [1]   6.25%
Spread [1]   6.25%
Principal   $ 4.7
Amortized Cost   4.6
Fair Value   $ 4.7
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 1    
Coupon [3] 5.60%  
Spread [3] 5.50%  
Principal [5] $ 4.0  
Amortized Cost [5] 4.6  
Fair Value [5] $ 4.0  
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan 2    
Coupon 8.81% [3] 7.00% [1]
Spread 5.25% [3] 6.00% [1]
Principal $ 1.0 [4],[5] $ 16.0 [2],[7]
Amortized Cost 1.0 [4],[5] 16.0 [2],[7]
Fair Value $ 1.0 [4],[5] $ 16.0 [2],[7]
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, Limited partnership units    
Shares 4,400,000 4,400,000
Amortized Cost $ 4.2 [5],[6] $ 4.2 [2],[8]
Fair Value 7.1 [5],[6] 7.6 [2],[8]
Investment, Identifier [Axis]: Apex Clean Energy TopCo, LLC    
Fair Value $ 134.9 $ 79.1
Investment, Identifier [Axis]: Apex Clean Energy TopCo, LLC, Class A common units    
Shares 1,335,610 1,335,610
Amortized Cost $ 89.6 $ 80.5
Fair Value $ 134.9 $ 79.1
Investment, Identifier [Axis]: Applied Technical Services, LLC, First lien senior secured loan    
Coupon [3] 9.42%  
Spread [3] 5.75%  
Principal [4],[5] $ 0.8  
Amortized Cost [4],[5] 0.8  
Fair Value [4],[5] $ 0.8  
Investment, Identifier [Axis]: Applied Technical Services, LLC, First lien senior secured revolving loan    
Coupon [3] 11.00%  
Spread [3] 4.75%  
Principal [4] $ 0.7  
Amortized Cost [4] 0.6  
Fair Value [4] $ 0.7  
Investment, Identifier [Axis]: Appriss Health, LLC and Appriss Health Intermediate Holdings, Inc., First lien senior secured loan    
Coupon 9.93% [3] 8.25% [1]
Spread 7.25% [3] 7.25% [1]
Principal $ 5.7 [4],[5] $ 13.4 [2],[7]
Amortized Cost 5.7 [4],[5] 13.4 [2],[7]
Fair Value $ 5.7 [4],[5] $ 13.4 [2],[7]
Investment, Identifier [Axis]: Appriss Health, LLC and Appriss Health Intermediate Holdings, Inc., Series A preferred shares    
Coupon, PIK 11.00% [3] 11.00% [1]
Shares 32,236 32,236
Amortized Cost $ 37.6 [5] $ 34.6 [2]
Fair Value $ 37.6 [5] $ 34.6 [2]
Investment, Identifier [Axis]: Apptio, Inc., First lien senior secured loan    
Coupon 8.46% [3] 8.25% [1]
Spread 6.00% [3] 7.25% [1]
Principal $ 42.2 [4],[5] $ 62.2 [7]
Amortized Cost 42.2 [4],[5] 62.2 [7]
Fair Value $ 41.8 [4],[5] $ 62.2 [7]
Investment, Identifier [Axis]: Apptio, Inc., First lien senior secured revolving loan    
Coupon 8.46% [3] 8.25% [1]
Spread 6.00% [3] 7.25% [1]
Principal $ 1.7 [4],[5] $ 1.7 [2],[7]
Amortized Cost 1.7 [4],[5] 1.7 [2],[7]
Fair Value $ 1.7 [4],[5] $ 1.7 [2],[7]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan    
Coupon 8.81% [3] 8.21% [1]
Spread 5.75% [3] 7.46% [1]
Principal $ 90.0 [4],[5],[6] $ 69.5 [2],[7],[8]
Amortized Cost 90.0 [4],[5],[6] 64.8 [2],[7],[8]
Fair Value $ 89.1 [4],[5],[6] $ 69.5 [2],[7],[8]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 2    
Coupon 8.46% [3] 7.50% [1]
Spread 7.00% [3] 6.75% [1]
Principal $ 69.4 [4],[5],[6] $ 14.5 [2],[7],[8]
Amortized Cost 79.5 [4],[5],[6] 14.8 [2],[7],[8]
Fair Value $ 69.4 [4],[5],[6] $ 14.5 [2],[7],[8]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 3    
Coupon [1]   7.75%
Spread [1]   6.75%
Principal [2],[7],[8]   $ 7.5
Amortized Cost [2],[7],[8]   7.5
Fair Value [2],[7],[8]   $ 7.5
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan 4    
Coupon 8.00% [3] 6.75% [1]
Spread 7.00% [3] 6.00% [1]
Principal $ 6.4 [4],[5],[6] $ 111.2 [2],[7],[8]
Amortized Cost 7.5 [4],[5],[6] 111.2 [2],[7],[8]
Fair Value $ 6.4 [4],[5],[6] $ 111.2 [2],[7],[8]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, Senior subordinated loan    
Coupon, PIK 11.50% [3] 11.50% [1]
Principal $ 1.4 [5],[6],[13] $ 1.3 [2],[8],[12]
Amortized Cost 1.4 [5],[6],[13] 1.2 [2],[8],[12]
Fair Value $ 1.4 [5],[6],[13] 1.4 [2],[8],[12]
Investment, Identifier [Axis]: Ares IIIR/IVR CLO Ltd., Subordinated notes    
Principal [8]   20.0
Amortized Cost [8]   0.0
Fair Value [8]   $ 0.0
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan    
Coupon [3] 9.98%  
Spread [3] 7.25%  
Principal [4],[5],[6] $ 21.0  
Amortized Cost [4],[5],[6] 21.0  
Fair Value [4],[5],[6] $ 21.0  
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan 2    
Coupon [3] 9.98%  
Spread [3] 7.25%  
Principal [4],[5],[6] $ 4.4  
Amortized Cost [4],[5],[6] 4.8  
Fair Value [4],[5],[6] $ 4.4  
Investment, Identifier [Axis]: Argenbright Holdings V, LLC, First lien senior secured loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 21.1
Amortized Cost [2],[7]   21.1
Fair Value [2],[7]   $ 20.9
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc., Common stock    
Shares 5,054 4,900
Amortized Cost $ 5.1 [5] $ 4.9 [2]
Fair Value $ 7.0 [5] $ 6.7 [2]
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc., First lien senior secured loan    
Coupon 7.29% [3] 5.25% [1]
Spread 4.50% [3] 4.50% [1]
Principal $ 0.1 [4],[5] $ 27.6 [2],[7]
Amortized Cost 0.1 [4],[5] 27.6 [2],[7]
Fair Value $ 0.1 [4],[5] $ 27.2 [2],[7]
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc., First lien senior secured revolving loan    
Coupon 7.62% [3] 5.25% [1]
Spread 4.50% [3] 4.50% [1]
Principal $ 13.7 [4],[5],[13] $ 3.7 [2],[7],[14]
Amortized Cost 13.8 [4],[5],[13] 3.7 [2],[7],[14]
Fair Value $ 13.4 [4],[5],[13] $ 3.6 [2],[7],[14]
Investment, Identifier [Axis]: AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP, Class A units    
Shares 10,487,950  
Amortized Cost [5] $ 10.5  
Fair Value [5] $ 10.2  
Investment, Identifier [Axis]: AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP, Series A preferred stock    
Coupon, PIK [3] 10.75%  
Shares 198,504  
Amortized Cost [5] $ 212.3  
Fair Value [5] $ 197.4  
Investment, Identifier [Axis]: AthenaHealth Group Inc., VVC Holding Corp, Virence Intermediate Holding Corp, and Virence Holdings LLC, Class A interests    
Shares (as a percent)   0.39%
Amortized Cost [2]   $ 9.0
Fair Value [2]   $ 49.3
Investment, Identifier [Axis]: Athyrium Buffalo LP, Limited partnership interests    
Shares 7,628,966  
Amortized Cost [5],[6] $ 7.7  
Fair Value [5],[6] $ 7.7  
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan    
Coupon 8.57% [3] 6.50% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 0.1 [4],[5] $ 0.2 [2],[7]
Amortized Cost 0.1 [4],[5] 0.2 [2],[7]
Fair Value $ 0.1 [4],[5] $ 0.2 [2],[7]
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 2    
Coupon 8.57% [3] 6.50% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 0.1 [4],[5] $ 2.1 [2],[7]
Amortized Cost 0.1 [4],[5] 2.1 [2],[7]
Fair Value $ 0.1 [4],[5] $ 2.1 [2],[7]
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 3    
Coupon [3] 8.57%  
Spread [3] 5.50%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured revolving loan    
Coupon [3] 8.49%  
Spread [3] 5.50%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, Class A common units    
Shares 4,113,113 4,113,113
Amortized Cost $ 0.0 $ 0.0 [2]
Fair Value $ 0.0 $ 0.6 [2]
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, First lien senior secured loan    
Coupon 8.67% [3] 6.00% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 0.1 [4],[5] $ 10.0 [2],[7]
Amortized Cost 0.1 [4],[5] 10.0 [2],[7]
Fair Value $ 0.1 [4],[5] $ 10.0 [2],[7]
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, Preferred units    
Coupon, PIK 9.00% [3] 9.00% [1]
Shares 4,113,113 4,113,113
Amortized Cost $ 4.9 [5] $ 4.5
Fair Value $ 3.2 [5] $ 4.5
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC, First lien senior secured loan    
Coupon 9.04% [3] 6.75% [1]
Coupon, PIK [3] 4.00%  
Spread 6.00% [3] 6.00% [1]
Principal $ 9.3 [4],[5] $ 6.6 [2],[7]
Amortized Cost 9.3 [4],[5] 6.6 [2],[7]
Fair Value $ 9.2 [4],[5] $ 6.5 [2],[7]
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC, Senior subordinated loan    
Coupon [1]   10.25%
Coupon, PIK [3] 10.25%  
Principal $ 37.5 [5] $ 35.6 [2]
Amortized Cost 37.5 [5] 35.6 [2]
Fair Value $ 36.4 [5] $ 35.3 [2]
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., First lien senior secured loan    
Coupon [3] 8.17%  
Spread [3] 4.50%  
Principal [4],[5],[11] $ 9.2  
Amortized Cost [4],[5],[11] 8.8  
Fair Value [4],[5],[11] $ 8.0  
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., Second lien senior secured loan    
Coupon [3] 11.06%  
Spread [3] 8.25%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: Avetta, LLC, First lien senior secured loan    
Coupon 8.56% [3] 7.25% [1]
Spread 5.75% [3] 6.25% [1]
Principal $ 0.2 [4],[5] $ 11.8 [2],[7]
Amortized Cost 0.2 [4],[5] 11.8 [2],[7]
Fair Value $ 0.1 [4],[5] $ 11.8 [2],[7]
Investment, Identifier [Axis]: AxiomSL Group, Inc. and Calypso Group, Inc., First lien senior secured loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 21.4
Amortized Cost [2],[7]   21.0
Fair Value [2],[7]   $ 21.2
Investment, Identifier [Axis]: AxiomSL Group, Inc. and Calypso Group, Inc., First lien senior secured revolving loan    
Coupon [3] 9.12%  
Spread [3] 6.00%  
Principal [4],[5] $ 21.2  
Amortized Cost [4],[5] 20.9  
Fair Value [4],[5] $ 21.2  
Investment, Identifier [Axis]: Axiomatic, LLC, Class A-1 units    
Shares 500,000  
Amortized Cost $ 5.0  
Fair Value $ 5.0  
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP, First lien senior secured loan    
Coupon [3] 7.83%  
Spread [3] 5.00%  
Principal [4],[5] $ 6.0  
Amortized Cost [4],[5] 6.4  
Fair Value [4],[5] $ 6.0  
Investment, Identifier [Axis]: BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC, Common units    
Shares 4,497,860 4,220,159
Amortized Cost $ 4.5 [5] $ 4.2 [2]
Fair Value $ 3.8 [5] $ 4.1 [2]
Investment, Identifier [Axis]: BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC, First lien senior secured loan    
Coupon 9.54% [3] 7.00% [1]
Spread 6.25% [3] 6.25% [1]
Principal $ 0.2 [4],[5] $ 0.2 [2],[7]
Amortized Cost 0.2 [4],[5] 0.2 [2],[7]
Fair Value $ 0.2 [4],[5] $ 0.2 [2],[7]
Investment, Identifier [Axis]: BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC, Senior subordinated loan    
Coupon, PIK 10.05% [3] 9.30% [1]
Principal $ 4.9 [5] $ 4.5 [2]
Amortized Cost 4.9 [5] 4.5 [2]
Fair Value $ 4.9 [5] 4.5 [2]
Investment, Identifier [Axis]: BH-Sharp Holdings LP, Common units    
Shares 2,950,000  
Amortized Cost [5] $ 3.0  
Fair Value [5] $ 1.2  
Investment, Identifier [Axis]: BW Landco LLC    
Fair Value   $ 0.0
Investment, Identifier [Axis]: Badger Sportswear Acquisition, Inc., Second lien senior secured loan    
Coupon 12.12% [3] 10.25% [1]
Spread 9.00% [3] 9.00% [1]
Principal $ 56.8 [4],[5] $ 56.8 [2],[7]
Amortized Cost 56.8 [4],[5] 56.8 [2],[7]
Fair Value $ 56.8 [4],[5] $ 56.8 [2],[7]
Investment, Identifier [Axis]: Balrog Acquisition, Inc., Balrog Topco, Inc. and Balrog Parent, L.P., Class A preferred units    
Coupon, PIK 8.00% [3] 800.00% [1]
Shares 5,484 5,484
Amortized Cost $ 6.0 [5] $ 5.6 [2]
Fair Value $ 8.0 [5] $ 5.5 [2]
Investment, Identifier [Axis]: Balrog Acquisition, Inc., Balrog Topco, Inc. and Balrog Parent, L.P., Second lien senior secured loan    
Coupon 10.07% [3] 7.50% [1]
Spread 7.00% [3] 7.00% [1]
Principal $ 29.5 [4],[5] $ 29.5 [2],[7]
Amortized Cost 29.5 [4],[5] 29.5 [2],[7]
Fair Value $ 28.9 [4],[5] $ 29.4 [2],[7]
Investment, Identifier [Axis]: Balrog Acquisition, Inc., Balrog Topco, Inc. and Balrog Parent, L.P., Series A preferred shares    
Coupon, PIK 11.00% [3] 11.00% [1]
Shares 21,921 21,921
Amortized Cost $ 24.7 [5] $ 22.7 [2]
Fair Value $ 23.2 [5] $ 22.7 [2]
Investment, Identifier [Axis]: Bambino Group Holdings, LLC, Class A preferred units    
Shares 1,000,000 1,000,000
Amortized Cost $ 1.1 [5] $ 1.0 [2]
Fair Value $ 1.2 [5] $ 1.1 [2]
Investment, Identifier [Axis]: Bamboo Purchaser, Inc., First lien senior secured loan    
Coupon 9.50% [3] 6.75% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 42.9 [4],[5] $ 39.1 [2],[7]
Amortized Cost 42.9 [4],[5] 39.1 [2],[7]
Fair Value $ 42.5 [4],[5] $ 38.6 [2],[7]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan    
Coupon [1]   7.75%
Spread [1]   6.75%
Principal [2],[7]   $ 6.7
Amortized Cost [2],[7]   6.7
Fair Value [2],[7]   $ 6.7
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 1    
Coupon [3] 10.17%  
Spread [3] 6.50%  
Principal [4],[5] $ 9.1  
Amortized Cost [4],[5] 9.1  
Fair Value [4],[5] $ 9.1  
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 2    
Coupon 10.17% [3] 7.75% [1]
Spread 6.50% [3] 6.75% [1]
Principal $ 1.0 [4],[5] $ 7.7 [2],[7]
Amortized Cost 1.0 [4],[5] 7.7 [2],[7]
Fair Value $ 1.0 [4],[5] $ 7.7 [2],[7]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 3    
Coupon [1]   8.50%
Spread [1]   7.50%
Principal [2],[7]   $ 5.0
Amortized Cost [2],[7]   5.0
Fair Value [2],[7]   $ 5.0
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured revolving loan    
Coupon [3] 10.17%  
Spread [3] 6.50%  
Principal [4],[5] $ 0.9  
Amortized Cost [4],[5] 0.9  
Fair Value [4],[5] $ 0.9  
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, Preferred units    
Shares 120,999  
Amortized Cost [5] $ 4.1  
Fair Value [5] $ 5.1  
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC, First lien senior secured loan    
Coupon 8.37% [3] 6.00% [1]
Spread 5.25% [3] 5.25% [1]
Principal $ 16.6 [4],[5],[6] $ 14.5 [7],[8]
Amortized Cost 16.6 [4],[5],[6] 14.5 [7],[8]
Fair Value $ 16.4 [4],[5],[6] $ 14.4 [7],[8]
Investment, Identifier [Axis]: Bearcat Buyer, Inc. and Bearcat Parent, Inc., Class B common units    
Shares   4,211
Amortized Cost [2]   $ 4.2
Fair Value [2]   $ 10.8
Investment, Identifier [Axis]: Bearcat Buyer, Inc. and Bearcat Parent, Inc., Second lien senior secured loan 1    
Coupon [1]   9.25%
Spread [1]   8.25%
Principal [2],[7]   $ 69.5
Amortized Cost [2],[7]   69.5
Fair Value [2],[7]   $ 69.5
Investment, Identifier [Axis]: Bearcat Buyer, Inc. and Bearcat Parent, Inc., Second lien senior secured loan 2    
Coupon [1]   9.25%
Spread [1]   8.25%
Principal [2],[7]   $ 12.7
Amortized Cost [2],[7]   12.7
Fair Value [2],[7]   $ 12.7
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan    
Coupon 4.44% [3] 5.50% [1]
Spread 3.75% [3] 2.25% [1]
Principal $ 4.3 [5],[13] $ 0.0 [2],[14]
Amortized Cost 4.4 [5],[13] 0.0 [2],[14]
Fair Value $ 4.3 [5],[13] $ 0.0 [2],[14]
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan 2    
Coupon [3] 9.00%  
Spread [3] 2.75%  
Principal [5],[13] $ 2.8  
Amortized Cost [5],[13] 2.8  
Fair Value [5],[13] $ 2.8  
Investment, Identifier [Axis]: Benecon Midco II LLC and Locutus Holdco LLC, Common units    
Shares 9,803,682 9,803,682
Amortized Cost $ 10.0 $ 10.0
Fair Value $ 19.7 $ 15.5
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan    
Coupon 12.09% [3] 6.75% [1]
Coupon, PIK [3] 11.09%  
Spread 8.75% [3] 6.00% [1]
Principal $ 23.8 [4],[5] $ 23.4 [2],[7]
Amortized Cost 23.8 [4],[5] 23.4 [2],[7]
Fair Value $ 19.5 [4],[5] $ 23.2 [2],[7]
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan 2    
Coupon [3] 10.58%  
Spread [3] 7.50%  
Principal [4],[5] $ 5.0  
Amortized Cost [4],[5] 5.0  
Fair Value [4],[5] $ 4.1  
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, First lien senior secured revolving loan    
Coupon 10.75% [3] 8.75% [1]
Spread 4.50% [3] 5.50% [1]
Principal $ 0.9 [4],[5] $ 0.4 [2],[7]
Amortized Cost 0.9 [4],[5] 0.4 [2],[7]
Fair Value 0.9 [4],[5] $ 0.4 [2],[7]
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, First lien senior secured revolving loan 2    
Coupon [1]   7.50%
Spread [1]   6.50%
Principal [2],[7]   $ 0.3
Amortized Cost [2],[7]   0.3
Fair Value [2],[7]   $ 0.3
Investment, Identifier [Axis]: Birch Permian, LLC, Second lien senior secured loan    
Coupon [1]   9.50%
Spread [1]   8.00%
Principal [2],[7]   $ 75.7
Amortized Cost [2],[7]   75.5
Fair Value [2],[7]   75.7
Investment, Identifier [Axis]: Blue Angel Buyer 1, LLC and Blue Angel Holdco, LLC    
Fair Value   0.0
Investment, Identifier [Axis]: Blue Wolf Capital Fund II, L.P.    
Fair Value $ 0.1 $ 0.2
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] $ 0.2 [8],[12]
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured loan    
Coupon [3] 8.34%  
Spread [3] 6.00%  
Principal [4],[5] $ 1.0  
Amortized Cost [4],[5] 1.0  
Fair Value [4],[5] $ 1.0  
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC, First lien senior secured revolving loan    
Coupon [3] 8.55%  
Spread [3] 6.00%  
Principal [4],[5] $ 1.7  
Amortized Cost [4],[5] 1.5  
Fair Value [4],[5] $ 1.6  
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan    
Coupon [1]   7.50%
Coupon, PIK [1]   3.00%
Spread [1]   6.50%
Principal [2],[7]   $ 15.5
Amortized Cost [2],[7]   15.2
Fair Value [2],[7]   $ 15.5
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan 1    
Coupon [3] 9.68%  
Coupon, PIK [3] 3.00%  
Spread [3] 6.00%  
Principal [4],[5] $ 15.9  
Amortized Cost [4],[5] 15.6  
Fair Value [4],[5] $ 15.9  
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan 2    
Coupon [3] 9.68%  
Coupon, PIK [3] 3.00%  
Spread [3] 6.00%  
Principal [4],[5] $ 1.4  
Amortized Cost [4],[5] 1.4  
Fair Value [4],[5] $ 1.4  
Investment, Identifier [Axis]: Bottomline Technologies, Inc., First lien senior secured loan    
Coupon [3] 8.35%  
Spread [3] 5.50%  
Principal [4],[5] $ 33.0  
Amortized Cost [4],[5] 33.0  
Fair Value [4],[5] $ 32.4  
Investment, Identifier [Axis]: Bowhunter Holdings, LLC, Common units    
Shares 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 $ 50.4 $ 47.8
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P., Common units    
Shares 14,850 14,850
Amortized Cost $ 11.5 [5] $ 11.5 [2]
Fair Value $ 9.9 [5] $ 8.8 [2]
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P., First lien senior secured loan    
Coupon 10.67% [3] 7.25% [1]
Spread 7.00% [3] 6.25% [1]
Principal $ 38.9 [4],[5] $ 39.4 [7]
Amortized Cost 38.9 [4],[5] 39.4 [7]
Fair Value $ 38.2 [4],[5] $ 37.4 [7]
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P., First lien senior secured revolving loan    
Coupon 9.74% [3] 7.25% [1]
Spread 7.00% [3] 6.25% [1]
Principal $ 2.3 [4],[5] $ 1.7 [2],[7]
Amortized Cost 2.3 [4],[5] 1.7 [2],[7]
Fair Value $ 2.3 [4],[5] $ 1.6 [2],[7]
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, First lien senior secured loan    
Coupon [3] 8.41%  
Spread [3] 5.25%  
Principal [4],[5],[11] $ 4.8  
Amortized Cost [4],[5],[11] 4.4  
Fair Value [4],[5],[11] $ 4.4  
Investment, Identifier [Axis]: Businessolver.com, Inc., First lien senior secured loan    
Coupon 9.17% [3] 6.50% [1]
Spread 5.50% [3] 5.75% [1]
Principal $ 14.4 [4],[5] $ 70.2 [2],[7]
Amortized Cost 14.4 [4],[5] 70.2 [2],[7]
Fair Value $ 14.2 [4],[5] $ 69.5 [2],[7]
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc., First lien senior secured loan    
Coupon 8.62% [3] 5.63% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 33.7 [5],[11] $ 34.0
Amortized Cost 33.6 [5],[11] 33.8
Fair Value 31.1 [5],[11] $ 33.3
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc., First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: CDI Holdings III Corp. and CDI Holdings I Corp., Common stock    
Shares 6,149 6,149
Amortized Cost $ 6.1 [5] $ 6.1 [2]
Fair Value $ 4.6 [5] $ 6.1 [2]
Investment, Identifier [Axis]: CDI Holdings III Corp. and CDI Holdings I Corp., First lien senior secured loan    
Coupon 9.42% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 3.8 [4],[5] $ 3.8 [2],[7]
Amortized Cost 3.8 [4],[5] 3.8 [2],[7]
Fair Value $ 3.7 [4],[5] $ 3.8 [2],[7]
Investment, Identifier [Axis]: CHG PPC Parent LLC & PPC CHG Blocker LLC, Common units    
Shares 59 58.56
Amortized Cost $ 3.0 [5] $ 3.0 [2]
Fair Value $ 2.9 [5] $ 3.0 [2]
Investment, Identifier [Axis]: CHG PPC Parent LLC & PPC CHG Blocker LLC, Second lien senior secured loan    
Coupon 9.87% [3] 7.25% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 94.6 [4],[5] $ 94.6 [2],[7]
Amortized Cost 94.6 [4],[5] 94.6 [2],[7]
Fair Value $ 89.9 [4],[5] $ 93.7 [2],[7]
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., Common stock    
Shares 289  
Amortized Cost [5] $ 2.9  
Fair Value [5] $ 2.9  
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured loan    
Coupon [3] 8.02%  
Spread [3] 5.25%  
Principal [4],[5] $ 24.6  
Amortized Cost [4],[5] 24.6  
Fair Value [4],[5] $ 24.1  
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured revolving loan    
Coupon [3] 8.31%  
Spread [3] 5.25%  
Principal $ 0.9  
Amortized Cost 0.9  
Fair Value $ 0.9  
Investment, Identifier [Axis]: CMW Parent LLC (fka Black Arrow, Inc.), Series A units    
Shares 32 32
Amortized Cost $ 0.0 $ 0.0 [2]
Fair Value $ 0.0 $ 0.0 [2]
Investment, Identifier [Axis]: CREST Exeter Street Solar 2004-1, Preferred shares    
Shares 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]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, Common stock    
Shares 36,254 32,429
Amortized Cost $ 11.9 [5] $ 10.0 [2]
Fair Value $ 17.8 [5] $ 15.9 [2]
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 1    
Coupon 8.87% [3] 6.25% [1]
Spread 5.75% [3] 5.25% [1]
Principal $ 39.0 [4],[5] $ 39.4 [7]
Amortized Cost 39.0 [4],[5] 39.4 [7]
Fair Value $ 39.0 [4],[5] $ 39.4 [7]
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 2    
Coupon 8.86% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 26.6 [4],[5] $ 49.2 [2],[7]
Amortized Cost 26.6 [4],[5] 49.2 [2],[7]
Fair Value $ 26.6 [4],[5] $ 49.2 [2],[7]
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured loan 3    
Coupon [3] 8.87%  
Spread [3] 5.75%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] 0.1  
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured revolving loan    
Coupon [1]   8.00%
Spread [1]   4.75%
Principal [2],[7],[14]   $ 0.4
Amortized Cost 0.0 [15] 0.4 [2],[7],[14]
Fair Value $ 0.0 [15] $ 0.4 [2],[7],[14]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan    
Coupon [3] 11.31%  
Coupon, PIK [3] 2.00%  
Spread [3] 8.50%  
Principal [4],[5] $ 31.2  
Amortized Cost [4],[5] 31.1  
Fair Value [4],[5] $ 30.6  
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 1    
Coupon [1]   9.50%
Coupon, PIK [1]   5.25%
Spread [1]   8.50%
Principal [7]   $ 31.4
Amortized Cost [7]   31.3
Fair Value [7]   $ 30.5
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 2    
Coupon 11.74% [3] 9.50% [1]
Coupon, PIK 2.00% [3] 5.25% [1]
Spread 8.50% [3] 8.50% [1]
Principal $ 11.9 [4],[5] $ 9.8 [2],[7]
Amortized Cost 11.9 [4],[5] 9.8 [2],[7]
Fair Value $ 11.6 [4],[5] $ 9.5 [2],[7]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 3    
Coupon 11.31% [3] 9.50% [1]
Coupon, PIK 2.00% [3] 5.25% [1]
Spread 8.50% [3] 8.50% [1]
Principal $ 9.7 [4],[5] $ 12.0 [2],[7]
Amortized Cost 9.7 [4],[5] 12.0 [2],[7]
Fair Value $ 9.5 [4],[5] $ 11.6 [2],[7]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 4    
Coupon [3] 12.18%  
Coupon, PIK 2.00% [3] 5.25% [1]
Spread 8.50% [3] 8.50% [1]
Principal $ 7.8 [4],[5] $ 7.9 [2],[7]
Amortized Cost 7.8 [4],[5] 7.9 [2],[7]
Fair Value $ 7.6 [4],[5] $ 7.6 [2],[7]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 5    
Coupon 11.31% [3] 9.50% [1]
Coupon, PIK 2.00% [3] 5.25% [1]
Spread 8.50% [3] 8.50% [1]
Principal $ 5.0 [4],[5] $ 4.0 [7]
Amortized Cost 4.8 [4],[5] 3.7 [7]
Fair Value $ 4.9 [4],[5] $ 3.9 [7]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan    
Coupon 11.31% [3] 9.50% [1]
Coupon, PIK 2.00% [3] 5.25% [1]
Spread 8.50% [3] 8.50% [1]
Principal $ 11.6 [4],[5],[13] $ 7.9 [2],[7],[14]
Amortized Cost 11.6 [4],[5],[13] 7.9 [2],[7],[14]
Fair Value $ 11.4 [4],[5],[13] $ 7.6 [2],[7],[14]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan 2    
Coupon 11.31% [3] 8.75% [1]
Coupon, PIK [3] 2.00%  
Spread 8.50% [3] 5.50% [1]
Principal $ 0.9 [4],[5] $ 3.0 [7]
Amortized Cost 0.9 [4],[5] 3.0 [7]
Fair Value $ 0.9 [4],[5] $ 2.9 [7]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan 3    
Coupon [1]   9.50%
Coupon, PIK [1]   5.25%
Spread [1]   8.50%
Principal [2],[7]   $ 0.7
Amortized Cost [2],[7]   0.7
Fair Value [2],[7]   $ 0.7
Investment, Identifier [Axis]: CallMiner, Inc., Warrant to purchase shares of Series 1 preferred stock    
Shares   2,350,636
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: CallMiner, Inc., Warrant to purchase up to 2,350,636 shares of Series 1 preferred stock    
Shares 2,350,636  
Amortized Cost $ 0.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: Calyx Energy III, LLC, First lien senior secured loan    
Coupon [3] 11.15%  
Spread [3] 8.11%  
Principal [4],[5] $ 60.6  
Amortized Cost [4],[5] 60.6  
Fair Value [4],[5] $ 60.6  
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, Class A units    
Shares 10,581 10,581
Amortized Cost $ 10.6 [5] $ 10.6 [2]
Fair Value $ 19.8 [5] $ 14.4 [2]
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, First lien senior secured loan    
Coupon 7.87% [3] 5.75% [1]
Spread 4.75% [3] 4.75% [1]
Principal $ 0.3 [4],[5] $ 0.3 [2],[7]
Amortized Cost 0.3 [4],[5] 0.3 [2],[7]
Fair Value 0.3 [4],[5] $ 0.3 [2],[7]
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, First lien senior secured revolving loan    
Coupon [1]   7.00%
Spread [1]   3.75%
Principal [2],[7],[14]   $ 2.3
Amortized Cost 0.0 2.3 [2],[7],[14]
Fair Value $ 0.0 $ 2.3 [2],[7],[14]
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, Second lien senior secured loan    
Coupon 11.87% [3] 9.75% [1]
Spread 8.75% [3] 8.75% [1]
Principal $ 68.3 [4],[5] $ 68.3 [2],[7]
Amortized Cost 68.3 [4],[5] 68.3 [2],[7]
Fair Value $ 68.3 [4],[5] $ 68.3 [2],[7]
Investment, Identifier [Axis]: Captive Resources Midco, LLC, First lien senior secured loan    
Coupon [3] 8.53%  
Spread [3] 5.50%  
Principal [4],[5] $ 14.1  
Amortized Cost [4],[5] 14.1  
Fair Value [4],[5] $ 13.8  
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., First lien senior secured revolving loan    
Coupon 9.75% [3] 6.75% [1]
Spread 3.50% [3] 3.50% [1]
Principal $ 2.2 [4],[5] $ 0.6 [2],[7]
Amortized Cost 2.2 [4],[5] 0.6 [2],[7]
Fair Value $ 2.1 [4],[5] $ 0.6 [2],[7]
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Second lien senior secured loan    
Coupon 11.40% [3] 8.50% [1]
Spread 7.75% [3] 7.75% [1]
Principal $ 64.3 [4],[5] $ 59.9 [2],[7]
Amortized Cost 64.3 [4],[5] 59.9 [2],[7]
Fair Value $ 61.5 [4],[5] $ 59.9 [2],[7]
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Series A preferred shares    
Coupon, PIK 14.75% [3] 11.21% [1]
Spread 11.00% [3] 11.00% [1]
Shares 24,898 24,898
Amortized Cost $ 31.0 [5] $ 28.3 [2]
Fair Value $ 27.9 [5] $ 28.0 [2]
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Series A-2 preferred shares    
Coupon, PIK 14.75% [3] 11.25% [1]
Spread 11.00% [3] 11.00% [1]
Shares 8,963 8,963
Amortized Cost $ 11.0 [5] $ 10.0 [2]
Fair Value $ 9.9 [5] $ 10.1 [2]
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Series A-3 preferred shares    
Coupon, PIK 11.00% [3] 11.00% [1]
Shares 11,952 11,952
Amortized Cost $ 13.2 [5] $ 12.1 [2]
Fair Value 11.8 [5] $ 13.4 [2]
Investment, Identifier [Axis]: Cehntric Brands LLC and Centric Brands GP LLC, First lien senior secured loan    
Fair Value [4],[5] 71.2  
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured revolving loan    
Coupon [1]   5.65%
Spread [1]   5.50%
Principal 6.8 [5],[9] $ 6.8 [2],[14]
Amortized Cost 6.9 [5],[9] 6.8 [2],[14]
Fair Value 3.4 [5],[9] $ 6.2 [2],[14]
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured revolving loan 2    
Principal [5],[9] 0.2  
Amortized Cost [5],[9] 0.2  
Fair Value [5],[9] $ 0.1  
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured loan    
Coupon [1]   10.00%
Coupon, PIK [3] 11.80%  
Spread 9.00% [3] 9.00% [1]
Principal $ 74.2 [4],[5] $ 67.9 [2],[7]
Amortized Cost $ 74.1 [4],[5] 67.8 [2],[7]
Fair Value [2],[7]   $ 67.3
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured revolving loan    
Coupon 8.63% [3] 6.50% [1]
Spread 5.75% [3] 5.50% [1]
Principal $ 7.4 [4],[5] $ 2.3 [2],[7]
Amortized Cost 7.4 [4],[5] 2.3 [2],[7]
Fair Value $ 7.1 [4],[5] $ 2.3 [2],[7]
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, Membership interests    
Shares 279,392 279,392
Amortized Cost $ 2.9 [5] $ 2.9 [2]
Fair Value $ 6.1 [5] $ 11.5 [2]
Investment, Identifier [Axis]: Chariot Buyer LLC, First lien senior secured revolving loan    
Coupon 6.62% [3] 5.75% [1]
Spread 3.50% [3] 2.50% [1]
Principal $ 3.5 [5] $ 0.2 [2]
Amortized Cost 3.5 [5] 0.2 [2]
Fair Value $ 3.1 [5] $ 0.2 [2]
Investment, Identifier [Axis]: Chariot Buyer LLC, First lien senior secured revolving loan 2    
Coupon [1]   3.60%
Spread [1]   3.50%
Principal [2]   $ 2.5
Amortized Cost [2]   2.5
Fair Value [2]   $ 2.5
Investment, Identifier [Axis]: Chariot Buyer LLC, Second lien senior secured loan    
Coupon 10.42% [3] 7.50% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 134.4 [4],[5] $ 134.4 [2],[7]
Amortized Cost 134.4 [4],[5] 134.4 [2],[7]
Fair Value $ 126.3 [4],[5] $ 133.0 [2],[7]
Investment, Identifier [Axis]: Cheyenne Petroleum Chompany Limited Partnership, CPC 2001 LLC and Mill Shoals LLC, Second lien senior secured loan    
Coupon [1]   10.00%
Investment, Identifier [Axis]: Cheyenne Petroleum Company Limited Partnership, CPC 2001 LLC and Mill Shoals LLC, Second lien senior secured loan    
Coupon [3] 12.67%  
Spread 9.00% [3] 9.00% [1]
Principal $ 63.1 [4],[5] $ 63.1 [2],[7]
Amortized Cost 63.1 [4],[5] 63.1 [2],[7]
Fair Value $ 63.1 [4],[5] $ 63.1 [2],[7]
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan    
Coupon 14.43% [3] 11.75% [1]
Spread 10.75% [3] 10.75% [1]
Principal $ 68.2 [4],[5] $ 68.2 [2],[7]
Amortized Cost 67.8 [4],[5] 67.4 [2],[7]
Fair Value $ 65.5 [4],[5] $ 61.4 [2],[7]
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 2    
Coupon 14.43% [3] 11.75% [1]
Spread 10.75% [3] 10.75% [1]
Principal $ 30.0 [4],[5] $ 15.2 [2],[7]
Amortized Cost 29.4 [4],[5] 15.2 [2],[7]
Fair Value $ 28.8 [4],[5] $ 13.6 [2],[7]
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 3    
Coupon [3] 14.43%  
Coupon, PIK [1]   11.75%
Spread 10.75% [3] 10.75% [1]
Principal $ 20.0 [4],[5] $ 15.5 [2],[7]
Amortized Cost 19.5 [4],[5] 15.3 [2],[7]
Fair Value $ 19.2 [4],[5] $ 13.9 [2],[7]
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 4    
Coupon 14.43% [3] 11.75% [1]
Spread 10.75% [3] 10.75% [1]
Principal $ 15.5 [4],[5] $ 20.0 [2],[7]
Amortized Cost 15.4 [4],[5] 18.9 [2],[7]
Fair Value $ 14.8 [4],[5] $ 18.0 [2],[7]
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 5    
Coupon 14.43% [3] 11.75% [1]
Spread 10.75% [3] 10.75% [1]
Principal $ 15.2 [4],[5] $ 3.0 [2],[7]
Amortized Cost 15.2 [4],[5] 3.0 [2],[7]
Fair Value $ 14.6 [4],[5] $ 2.7 [2],[7]
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 6    
Coupon 14.43% [3] 11.75% [1]
Spread 10.75% [3] 10.75% [1]
Principal $ 4.9 [4],[5] $ 4.9 [2],[7]
Amortized Cost 4.9 [4],[5] 4.9 [2],[7]
Fair Value $ 4.7 [4],[5] $ 4.4 [2],[7]
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan 7    
Coupon [3] 14.43%  
Coupon, PIK [1]   11.75%
Spread 10.75% [3] 10.75% [1]
Principal $ 3.0 [4],[5] $ 30.0 [2],[7]
Amortized Cost 3.0 [4],[5] 28.8 [2],[7]
Fair Value $ 2.9 [4],[5] $ 27.0 [2],[7]
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., Warrant    
Shares   718.66
Amortized Cost [2],[8]   $ 2.1
Fair Value [2],[8]   3.4
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., Warrant to purchase up to 718.66 shares    
Shares 718.66  
Amortized Cost [5],[6] $ 2.1  
Fair Value [5],[6] 6.9  
Investment, Identifier [Axis]: CoLTs 2005-1 Ltd.    
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: CoLTs 2005-1 Ltd., Preferred shares    
Shares 360 360
Amortized Cost $ 0.0 [6] $ 0.0 [8]
Fair Value $ 0.0 [6] 0.0 [8]
Investment, Identifier [Axis]: CoLTs 2005-2 Ltd.    
Fair Value   $ 0.0
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., Class A common units    
Shares 30,500 30,500
Amortized Cost $ 0.0 [5] $ 0.0 [2]
Fair Value $ 3.5 [5] $ 2.8 [2]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan    
Coupon 8.37% [3] 6.00% [1]
Spread 5.25% [3] 5.25% [1]
Principal $ 15.8 [4] $ 29.1 [2],[7]
Amortized Cost 15.8 [4] 29.1 [2],[7]
Fair Value $ 15.3 [4] $ 28.8 [2],[7]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured loan 2    
Coupon [3] 8.37%  
Spread [3] 5.25%  
Principal [4],[5] $ 14.5  
Amortized Cost [4],[5] 14.5  
Fair Value [4],[5] $ 14.1  
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., First lien senior secured revolving loan    
Coupon 8.37% [3] 6.00% [1]
Spread 5.25% [3] 5.25% [1]
Principal $ 2.5 [4],[5] $ 0.6 [2],[7]
Amortized Cost 2.5 [4],[5] 0.6 [2],[7]
Fair Value $ 2.4 [4],[5] $ 0.6 [2],[7]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., Preferred units    
Coupon, PIK 8.00% [3] 8.00% [1]
Shares 3,020 3,020
Amortized Cost $ 3.3 [5] $ 3.1 [2]
Fair Value $ 0.3 [5] $ 0.3 [2]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., Series A preferred shares    
Coupon [1]   10.75%
Coupon, PIK [3] 13.75%  
Spread 10.00% [3] 10.00% [1]
Shares 60,236 60,236
Amortized Cost $ 67.3 [5] $ 60.2 [2],[7]
Fair Value $ 67.3 [5] $ 60.2 [2],[7]
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., First lien senior secured loan    
Coupon 8.90% [3] 7.25% [1]
Spread 6.25% [3] 6.25% [1]
Principal $ 66.0 [4],[5] $ 92.8 [2],[7]
Amortized Cost 66.0 [4],[5] 92.8 [2],[7]
Fair Value $ 66.0 [4],[5] $ 92.8 [2],[7]
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., Second lien senior secured loan    
Coupon 13.00% [3] 13.00% [1]
Principal $ 19.9 [5] $ 19.9 [2]
Amortized Cost 19.9 [5] 19.9 [2]
Fair Value $ 19.7 [5] $ 19.9 [2]
Investment, Identifier [Axis]: Community Brands ParentCo, LLC, Class A units    
Shares 500,000  
Amortized Cost [5] $ 5.0  
Fair Value [5] $ 7.0  
Investment, Identifier [Axis]: Community Brands ParentCo, LLC, First lien senior secured loan    
Coupon [3] 8.88%  
Spread [3] 5.75%  
Principal [4],[5] $ 10.7  
Amortized Cost [4],[5] 10.7  
Fair Value [4],[5] $ 10.4  
Investment, Identifier [Axis]: Compex Legal Services, Inc., First lien senior secured revolving loan    
Coupon [3] 8.92%  
Spread [3] 5.25%  
Principal [4],[5] $ 2.0  
Amortized Cost [4],[5] 1.8  
Fair Value [4],[5] $ 2.0  
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan    
Coupon [3] 9.30%  
Spread [3] 5.75%  
Principal [4],[5] $ 0.3  
Amortized Cost [4],[5] 0.3  
Fair Value [4],[5] $ 0.3  
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan 1    
Coupon [1]   7.00%
Spread [1]   5.75%
Principal [2],[7]   $ 2.6
Amortized Cost [2],[7]   2.6
Fair Value [2],[7]   $ 2.6
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan 2    
Coupon [1]   8.00%
Spread [1]   4.75%
Principal [2],[7]   $ 0.1
Amortized Cost [2],[7]   0.1
Fair Value [2],[7]   $ 0.1
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan 3    
Coupon [1]   7.00%
Spread [1]   5.75%
Principal [2],[7]   $ 0.6
Amortized Cost [2],[7]   0.6
Fair Value [2],[7]   $ 0.6
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured revolving loan    
Coupon 9.30% [3] 7.00% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 0.3 [4],[5] $ 0.3 [2],[7]
Amortized Cost 0.3 [4],[5] 0.3 [2],[7]
Fair Value $ 0.3 [4],[5] $ 0.3 [2],[7]
Investment, Identifier [Axis]: Concert Golf Partners Holdco LLC, First lien senior secured revolving loan    
Coupon 9.30% [3] 5.50% [1]
Spread 5.75% [3] 4.50% [1]
Principal $ 0.4 [4],[5] $ 0.1 [2],[7]
Amortized Cost 0.4 [4],[5] 0.1 [2],[7]
Fair Value $ 0.4 [4],[5] $ 0.1 [2],[7]
Investment, Identifier [Axis]: Conservice Midco, LLC, Second lien senior secured loan    
Coupon [3] 10.87%  
Spread [3] 7.75%  
Principal [5] $ 0.0  
Amortized Cost [5] 0.0  
Fair Value [5] $ 0.0  
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., Common units    
Shares   4,799,000
Amortized Cost [2],[8]   $ 4.8
Fair Value [2],[8]   $ 6.0
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., First lien senior secured loan    
Coupon [1]   6.25%
Spread [1]   6.25%
Principal [2],[8]   $ 27.8
Amortized Cost [2],[8]   27.7
Fair Value [2],[8]   $ 27.5
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., First lien senior secured loan 2    
Coupon [1]   6.75%
Spread [1]   5.75%
Principal [2],[7],[8]   $ 32.9
Amortized Cost [2],[7],[8]   32.9
Fair Value [2],[7],[8]   $ 32.6
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., First lien senior secured loan 3    
Coupon [1]   8.00%
Spread [1]   4.75%
Principal [2],[7],[8]   $ 3.9
Amortized Cost [2],[7],[8]   3.9
Fair Value [2],[7],[8]   $ 3.8
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., First lien senior secured loan 4    
Coupon [1]   6.75%
Spread [1]   5.75%
Principal [2],[7],[8]   $ 11.3
Amortized Cost [2],[7],[8]   11.3
Fair Value [2],[7],[8]   $ 11.2
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., Common units    
Shares 4,799,000  
Amortized Cost [5],[6] $ 4.8  
Fair Value [5],[6] $ 7.1  
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured Loan 1    
Coupon [3] 9.45%  
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 1    
Spread [3] 5.75%  
Principal [4],[5],[6] $ 11.7  
Amortized Cost [4],[5],[6] 11.7  
Fair Value [4],[5],[6] $ 11.5  
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 2    
Coupon [3] 9.42%  
Spread [3] 5.75%  
Principal [4],[5],[6] $ 15.0  
Amortized Cost [4],[5],[6] 15.0  
Fair Value [4],[5],[6] $ 14.7  
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 3    
Coupon [3] 7.55%  
Spread [3] 6.25%  
Principal [5],[6] $ 24.7  
Amortized Cost [5],[6] 28.4  
Fair Value [5],[6] $ 24.2  
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 4    
Coupon [3] 9.45%  
Spread [3] 5.75%  
Principal [4],[5],[6] $ 60.0  
Amortized Cost [4],[5],[6] 60.0  
Fair Value [4],[5],[6] $ 58.8  
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., Series A common units    
Shares 23,340  
Amortized Cost [5],[6] $ 0.2  
Fair Value [5],[6] $ 0.0  
Investment, Identifier [Axis]: Continental Acquisition Holdings, Inc., First lien senior secured loan    
Coupon 10.42% [3] 7.75% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 36.2 [4],[5] $ 36.5 [2],[7]
Amortized Cost 36.2 [4],[5] 36.5 [2],[7]
Fair Value $ 35.5 [4],[5] $ 36.5 [2],[7]
Investment, Identifier [Axis]: Continental Acquisition Holdings, Inc., First lien senior secured loan 2    
Coupon 10.42% [3] 7.75% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 5.4 [4],[5] $ 33.2 [2],[7]
Amortized Cost 5.4 [4],[5] 33.2 [2],[7]
Fair Value $ 5.3 [4],[5] $ 33.2 [2],[7]
Investment, Identifier [Axis]: Continental Cafe, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan    
Coupon [1]   8.00%
Spread [1]   7.00%
Principal [2],[7]   $ 15.7
Amortized Cost [2],[7]   15.7
Fair Value [2],[7]   $ 15.5
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan    
Coupon [3] 10.12%  
Spread [3] 7.00%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L., First lien senior secured loan    
Coupon [3] 9.30%  
Spread [3] 5.75%  
Principal [4],[5],[6] $ 63.0  
Amortized Cost [4],[5],[6] 63.0  
Fair Value [4],[5],[6] $ 63.0  
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan    
Coupon [1]   5.50%
Spread [1]   4.75%
Principal [7]   $ 2.7
Amortized Cost [7]   2.7
Fair Value [7]   $ 2.7
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 1    
Coupon [3] 7.87%  
Spread [3] 4.75%  
Principal [4],[5],[6] $ 2.7  
Amortized Cost [4],[5],[6] 2.7  
Fair Value [4],[5],[6] $ 2.7  
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 2    
Coupon [3] 7.87%  
Spread [3] 4.75%  
Principal [4],[5],[6] $ 0.1  
Amortized Cost [4],[5],[6] 0.1  
Fair Value [4],[5],[6] $ 0.1  
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP, First lien senior secured loan    
Coupon [3] 6.63%  
Spread [3] 3.50%  
Principal [4],[5] $ 4.1  
Amortized Cost [4],[5] 3.3  
Fair Value [4],[5] $ 3.3  
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP, Limited partnership units    
Shares 59,665,989 59,665,989
Amortized Cost $ 59.7 [5] $ 59.7 [2]
Fair Value $ 62.4 [5] $ 77.9 [2]
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP, Second lien senior secured loan    
Coupon 9.63% [3] 7.00% [1]
Spread 6.50% [3] 6.50% [1]
Principal $ 155.7 [4],[5] $ 155.7 [2],[7]
Amortized Cost 155.7 [4],[5] 155.7 [2],[7]
Fair Value $ 132.3 [4],[5] $ 155.7 [2],[7]
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc. and Cority Parent, Inc., Common equity    
Shares 190,143  
Amortized Cost [5],[6] $ 0.0  
Fair Value [5],[6] $ 0.0  
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc. and Cority Parent, Inc., First lien senior secured loan    
Coupon [3] 8.81%  
Spread [3] 6.00%  
Principal [4],[5],[6] $ 16.5  
Amortized Cost [4],[5],[6] 16.5  
Fair Value [4],[5],[6] $ 16.5  
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc. and Cority Parent, Inc., First lien senior secured loan 2    
Coupon [3] 7.28%  
Spread [3] 5.00%  
Principal [4],[5],[6] $ 4.4  
Amortized Cost [4],[5],[6] 4.4  
Fair Value [4],[5],[6] $ 4.4  
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc. and Cority Parent, Inc., First lien senior secured loan 3    
Coupon [3] 9.28%  
Spread [3] 7.00%  
Principal [4],[5],[6] $ 1.1  
Amortized Cost [4],[5],[6] 1.1  
Fair Value [4],[5],[6] $ 1.1  
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc. and Cority Parent, Inc., First lien senior secured loan 4    
Coupon [3] 7.28%  
Spread [3] 5.00%  
Principal [4],[5],[6] $ 6.3  
Amortized Cost [4],[5],[6] 6.3  
Fair Value [4],[5],[6] $ 6.3  
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc. and Cority Parent, Inc., Preferred equity    
Coupon, PIK [3] 9.00%  
Shares 198  
Amortized Cost [5],[6] $ 0.3  
Fair Value [5],[6] $ 0.6  
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., Common equity    
Shares   190,143
Amortized Cost [2],[8]   $ 0.0
Fair Value [2],[8]   $ 0.0
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., First lien senior secured loan    
Coupon [1]   6.00%
Spread [1]   5.00%
Principal [7],[8]   $ 6.3
Amortized Cost [7],[8]   6.3
Fair Value [7],[8]   $ 6.3
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., First lien senior secured loan 2    
Coupon [1]   6.00%
Spread [1]   5.00%
Principal [7],[8]   $ 4.4
Amortized Cost [7],[8]   4.4
Fair Value [7],[8]   $ 4.4
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., First lien senior secured loan 3    
Coupon [1]   8.00%
Spread [1]   7.00%
Principal [2],[7],[8]   $ 1.1
Amortized Cost [2],[7],[8]   1.1
Fair Value [2],[7],[8]   $ 1.1
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., Preferred equity    
Coupon, PIK [1]   9.00%
Shares   198
Amortized Cost [2],[8]   $ 0.2
Fair Value [2],[8]   $ 0.6
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Class A-1 common stock    
Shares 1,360,100 1,360,100
Amortized Cost $ 13.6 [5] $ 13.6 [2]
Fair Value $ 15.1 [5] $ 13.3 [2]
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., First lien senior secured revolving loan    
Coupon 6.21% [3] 0.00% [1]
Spread [3] 3.50%  
Principal [5],[13] $ 21.9  
Amortized Cost 21.9 [5],[13] $ 0.0 [16]
Fair Value $ 20.2 [5],[13] $ 0.0 [16]
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Second lien senior secured loan    
Coupon 9.62% [3] 7.00% [1]
Spread 6.50% [3] 6.50% [1]
Principal $ 137.5 [4],[5] $ 137.5 [7]
Amortized Cost 137.5 [4],[5] 137.5 [7]
Fair Value $ 125.1 [4],[5] $ 135.4 [7]
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Series A preferred shares    
Coupon, PIK 10.50% [3] 10.50% [1]
Shares 116,413 116,413
Amortized Cost $ 125.2 [5] $ 119.0 [2]
Fair Value $ 111.4 [5] $ 119.0 [2]
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, Class A-2 units    
Shares 4,772  
Amortized Cost $ 4.8  
Fair Value $ 5.8  
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, First lien senior secured loan    
Coupon [3] 7.56%  
Spread [3] 4.75%  
Principal [4],[5] $ 8.7  
Amortized Cost [4],[5] 8.7  
Fair Value [4],[5] $ 8.7  
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, First lien senior secured revolving loan    
Coupon [3] 8.37%  
Spread [3] 5.25%  
Principal [4],[5] $ 1.5  
Amortized Cost [4],[5] 1.5  
Fair Value [4],[5] $ 1.5  
Investment, Identifier [Axis]: Coyote Buyer, LLC, First lien senior secured loan    
Coupon [3] 8.81%  
Spread [3] 6.00%  
Principal [4],[5] $ 0.8  
Amortized Cost [4],[5] 0.8  
Fair Value [4],[5] $ 0.7  
Investment, Identifier [Axis]: Coyote Buyer, LLC, First lien senior secured loan 2    
Coupon [3] 11.67%  
Spread [3] 8.00%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: Cozzini Bros., Inc. and BH-Sharp Holdings LP, Common units    
Shares   2,950,000
Amortized Cost [2]   $ 3.0
Fair Value [2]   $ 1.4
Investment, Identifier [Axis]: Cozzini Bros., Inc. and BH-Sharp Holdings LP, First lien senior secured loan    
Coupon [1]   8.50%
Coupon, PIK [1]   4.50%
Spread [1]   7.50%
Principal [2],[7]   $ 12.4
Amortized Cost [2],[7]   12.4
Fair Value [2],[7]   $ 11.4
Investment, Identifier [Axis]: CrossCountry Mortgage, LLC, First lien senior secured loan    
Coupon 10.07% [3] 7.50% [1]
Spread 7.00% [3] 7.00% [1]
Principal $ 93.8 [4],[5] $ 93.8 [2],[7]
Amortized Cost 93.8 [4],[5] 93.8 [2],[7]
Fair Value $ 92.8 [4],[5] 92.8 [2],[7]
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, Class A shares    
Shares 176  
Amortized Cost [5] $ 1.8  
Fair Value [5] $ 2.0  
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, Common units    
Shares 28  
Amortized Cost [5] $ 0.3  
Fair Value [5] $ 0.3  
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC, First lien senior secured loan    
Coupon [3] 8.67%  
Spread [3] 5.50%  
Principal [4],[5] $ 24.6  
Amortized Cost [4],[5] 24.6  
Fair Value [4],[5] $ 24.6  
Investment, Identifier [Axis]: Crown Health Care Laundry Services, LLC and Crown Laundry Holdings, LLC    
Fair Value   $ 0.0
Investment, Identifier [Axis]: DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Series A preferred shares    
Coupon, PIK [1]   10.50%
Shares   129,822
Amortized Cost [2]   $ 138.1
Fair Value [2]   $ 138.1
Investment, Identifier [Axis]: DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Series A units    
Shares   817,194
Amortized Cost [2]   $ 13.3
Fair Value [2]   $ 13.4
Investment, Identifier [Axis]: DFC Global Facility Borrower III LLC, First lien senior secured revolving loan    
Coupon 10.06% [3] 8.50% [1]
Spread 7.50% [3] 8.00% [1]
Principal $ 152.0 [4],[5],[6],[17] $ 146.4 [2],[7],[8],[18]
Amortized Cost 169.4 [4],[5],[6],[17] 149.9 [2],[7],[8],[18]
Fair Value $ 152.0 [4],[5],[6],[17] $ 146.4 [2],[7],[8],[18]
Investment, Identifier [Axis]: DFC Global Facility Borrower III LLC, First lien senior secured revolving loan, Secured borrowing    
Coupon 10.06% 8.50%
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan    
Coupon 10.62% [3] 8.50% [1]
Coupon, PIK 1.50% [3] 1.50% [1]
Spread 7.50% [3] 7.50% [1]
Principal $ 165.3 [4] $ 166.7 [7]
Amortized Cost 165.3 [4] 166.7 [7]
Fair Value $ 165.3 [4] $ 158.4 [7]
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 2    
Coupon 10.62% [3] 8.50% [1]
Coupon, PIK 1.50% [3] 1.50% [1]
Spread 7.50% [3] 7.50% [1]
Principal $ 6.5 [4],[5] $ 4.3 [2],[7]
Amortized Cost 6.5 [4],[5] 4.3 [2],[7]
Fair Value $ 6.5 [4],[5] $ 4.1 [2],[7]
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 3    
Coupon 10.62% [3] 8.50% [1]
Coupon, PIK 1.50% [3] 1.50% [1]
Spread 7.50% [3] 7.50% [1]
Principal $ 4.3 [4],[5] $ 5.0 [7]
Amortized Cost 4.3 [4],[5] 5.0 [7]
Fair Value $ 4.3 [4],[5] $ 4.7 [7]
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 4    
Coupon [1]   8.50%
Coupon, PIK [1]   1.50%
Spread [1]   7.50%
Principal [7]   $ 0.7
Amortized Cost [7]   0.7
Fair Value [7]   $ 0.6
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., Common stock    
Shares 8,549 8,549
Amortized Cost $ 8.5 [5] $ 8.5 [2]
Fair Value $ 8.4 [5] $ 11.3 [2]
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan    
Coupon 8.87% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 28.9 [4],[5] $ 29.8 [7]
Amortized Cost 28.9 [4],[5] 29.8 [7]
Fair Value $ 28.1 [4],[5] $ 29.8 [7]
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan 2    
Coupon 8.87% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 26.7 [4],[5] $ 46.7 [7]
Amortized Cost 26.7 [4],[5] 46.7 [7]
Fair Value $ 25.9 [4],[5] $ 46.7 [7]
Investment, Identifier [Axis]: DS Admiral Bidco, LLC, First lien senior secured loan    
Coupon 8.56% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 11.9 [2],[7]
Amortized Cost 0.1 [4],[5] 11.6 [2],[7]
Fair Value $ 0.1 [4],[5] $ 11.9 [2],[7]
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., Class A common stock    
Shares 7,500 7,500
Amortized Cost $ 7.5 [5] $ 7.5 [2]
Fair Value $ 6.5 [5] $ 4.2 [2]
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., Class B common stock    
Shares 7,500 7,500
Amortized Cost $ 0.0 [5] $ 0.0 [2]
Fair Value $ 0.0 [5] $ 0.0 [2]
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., First lien senior secured revolving loan    
Coupon [1]   6.75%
Spread [1]   3.50%
Principal [2],[14]   $ 0.3
Amortized Cost [2],[14]   0.3
Fair Value [2],[14]   $ 0.3
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., First lien senior secured revolving loan 2    
Coupon [1]   4.65%
Spread [1]   4.50%
Principal [2],[14]   $ 4.8
Amortized Cost [2],[14]   4.8
Fair Value [2],[14]   $ 4.8
Investment, Identifier [Axis]: Datix Bidco Limited, First lien senior secured loan    
Coupon 6.01% [3] 4.18% [1]
Spread 4.50% [3] 4.00% [1]
Principal $ 0.1 [5],[6] $ 0.1 [2],[8]
Amortized Cost 0.0 [5],[6] 0.0 [2],[8]
Fair Value $ 0.0 [5],[6] $ 0.1 [2],[8]
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Second lien senior secured loan    
Coupon [3] 9.90%  
Spread [3] 7.00%  
Principal [5] $ 8.8  
Amortized Cost [5] 8.2  
Fair Value [5] $ 8.5  
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Series A preferred shares    
Coupon, PIK [3] 10.50%  
Shares 129,822  
Amortized Cost [5] $ 145.3  
Fair Value [5] $ 132.9  
Investment, Identifier [Axis]: Dcert Buyer, Inc., DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Series A units    
Shares 817,194  
Amortized Cost [5] $ 13.3  
Fair Value [5] $ 12.4  
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., Common stock    
Shares 9,599 9,599
Amortized Cost $ 9.6 [5] $ 9.6 [2]
Fair Value $ 9.3 [5] $ 10.0 [2]
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., First lien senior secured loan    
Coupon 10.17% [3] 9.00% [1]
Coupon, PIK 0.50% [3] 2.00% [1]
Spread 6.50% [3] 8.00% [1]
Principal $ 148.9 [4],[5] $ 148.5 [2],[7]
Amortized Cost 148.9 [4],[5] 148.5 [2],[7]
Fair Value $ 147.3 [4],[5] $ 148.5 [2],[7]
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., First lien senior secured revolving loan    
Coupon 9.67% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 14.1 [4],[5] $ 2.4 [2],[7]
Amortized Cost 14.1 [4],[5] 2.4 [2],[7]
Fair Value $ 14.0 [4],[5] $ 2.4 [2],[7]
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, Class A units    
Shares 2,549,000  
Amortized Cost [5] $ 2.5  
Fair Value [5] $ 2.5  
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured loan    
Coupon 8.79% [3] 7.00% [1]
Spread 5.50% [3] 6.00% [1]
Principal $ 1.2 [4],[5] $ 37.3 [2],[7]
Amortized Cost 1.2 [4],[5] 37.3 [2],[7]
Fair Value $ 1.2 [4],[5] $ 36.9 [2],[7]
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured loan 2    
Coupon [3] 8.79%  
Spread [3] 5.50%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Topco LLC, Class A units    
Shares   2,549,000
Amortized Cost [2]   $ 2.5
Fair Value [2]   $ 2.5
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan    
Coupon [1]   7.25%
Spread [1]   6.25%
Principal [7]   $ 33.0
Amortized Cost [7]   32.4
Fair Value [7]   $ 33.0
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 1    
Coupon [3] 9.13%  
Spread [3] 6.25%  
Principal [4],[5] $ 36.0  
Amortized Cost [4],[5] 35.5  
Fair Value [4],[5] $ 35.3  
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 2    
Coupon 9.13% [3] 6.75% [1]
Spread 6.25% [3] 5.75% [1]
Principal $ 2.0 [4],[5] $ 8.9 [2],[7]
Amortized Cost 2.0 [4],[5] 8.9 [2],[7]
Fair Value $ 2.0 [4],[5] $ 8.9 [2],[7]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 3    
Coupon 8.63% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 11.4 [2],[7]
Amortized Cost 0.1 [4],[5] 11.3 [2],[7]
Fair Value $ 0.1 [4],[5] $ 11.4 [2],[7]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 4    
Coupon 8.63% [3] 7.25% [1]
Spread 5.75% [3] 6.25% [1]
Principal $ 0.1 [4],[5] $ 2.0 [2],[7]
Amortized Cost 0.1 [4],[5] 2.0 [2],[7]
Fair Value $ 0.1 [4],[5] $ 2.0 [2],[7]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured revolving loan    
Coupon 8.49% [3] 0.00% [1]
Spread [3] 6.25%  
Principal [4],[5],[13] $ 1.1  
Amortized Cost 1.1 [4],[5],[13] $ 0.0 [16]
Fair Value $ 1.1 [4],[5],[13] $ 0.0 [16]
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., Preferred stock    
Coupon, PIK 10.50% [3] 10.50% [1]
Shares 13,140 13,140
Amortized Cost $ 15.0 [5] $ 13.5 [2]
Fair Value $ 14.3 [5] 13.8 [2]
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., Common units    
Shares 600  
Principal [2]   600.0
Amortized Cost $ 0.6 [5] 0.6 [2]
Fair Value $ 1.1 [5] $ 1.0 [2]
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan    
Coupon 8.77% [3] 6.65% [1]
Spread 5.65% [3] 5.65% [1]
Principal $ 15.9 [4],[5] $ 16.0 [7]
Amortized Cost 15.9 [4],[5] 16.0 [7]
Fair Value $ 15.9 [4],[5] $ 16.0 [7]
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan 2    
Coupon 8.77% [3] 6.65% [1]
Spread 5.65% [3] 5.65% [1]
Principal $ 0.1 [4],[5] $ 0.1 [2],[7]
Amortized Cost 0.1 [4],[5] 0.1 [2],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [2],[7]
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan 3    
Coupon 8.77% [3] 6.65% [1]
Spread 5.65% [3] 5.65% [1]
Principal $ 0.1 [4],[5] $ 0.1 [2],[7]
Amortized Cost 0.1 [4],[5] 0.1 [2],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [2],[7]
Investment, Identifier [Axis]: Drilling Info Holdings, Inc. and Titan DI Preferred Holdings, Inc., Preferred stock    
Coupon, PIK 13.50% [3] 13.50% [1]
Shares 29.53 29.53
Amortized Cost $ 41.0 [5] $ 37.0 [2]
Fair Value $ 40.6 [5] $ 37.9 [2]
Investment, Identifier [Axis]: Drilling Info Holdings, Inc. and Titan DI Preferred Holdings, Inc., Second lien senior secured loan    
Coupon 11.37% [3] 8.35% [1]
Spread 8.25% [3] 8.25% [1]
Principal $ 25.0 [5] $ 25.0
Amortized Cost 25.0 [5] 25.0
Fair Value $ 24.5 [5] $ 25.0
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured loan    
Coupon 8.62% [3] 6.50% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 39.2 [4],[5],[6] $ 72.0 [2],[7],[8]
Amortized Cost 42.2 [4],[5],[6] 70.9 [2],[7],[8]
Fair Value $ 39.2 [4],[5],[6] $ 70.9 [2],[7],[8]
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP, Common units    
Shares 9,773,000 9,773,000
Amortized Cost $ 9.8 $ 9.8
Fair Value $ 8.3 $ 8.6
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP, First lien senior secured loan    
Coupon 10.17% [3] 7.50% [1]
Spread 6.50% [3] 6.50% [1]
Principal $ 25.7 [4],[5] $ 25.7 [7]
Amortized Cost 25.7 [4],[5] 25.7 [7]
Fair Value $ 25.4 [4],[5] $ 25.4 [7]
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP, First lien senior secured revolving loan    
Coupon [3] 9.06%  
Spread [3] 6.50%  
Principal [4],[5] $ 1.4  
Amortized Cost [4],[5] 1.4  
Fair Value [4],[5] $ 1.4  
Investment, Identifier [Axis]: EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P., Partnership units    
Shares 5,034,483 5,034,483
Amortized Cost $ 3.2 [5],[6] $ 3.2 [2],[8]
Fair Value $ 11.6 [5],[6] $ 9.8 [2],[8]
Investment, Identifier [Axis]: EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P., Second lien senior secured loan    
Coupon 10.17% [3] 7.00% [1]
Spread 6.50% [3] 6.50% [1]
Principal $ 177.9 [4],[5] $ 177.9 [2],[7]
Amortized Cost 177.9 [4],[5] 177.9 [2],[7]
Fair Value $ 174.3 [4],[5] $ 176.1 [2],[7]
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan    
Coupon 7.93% [3] 5.50% [1]
Spread 4.50% [3] 4.50% [1]
Principal $ 1.5 [4],[5] $ 0.2 [2],[7]
Amortized Cost 1.5 [4],[5] 0.2 [2],[7]
Fair Value $ 1.5 [4],[5] $ 0.2 [2],[7]
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 2    
Coupon 8.17% [3] 6.25% [1]
Spread 4.50% [3] 5.25% [1]
Principal $ 0.2 [4],[5] $ 0.3 [2],[7]
Amortized Cost 0.2 [4],[5] 0.3 [2],[7]
Fair Value $ 0.2 [4],[5] $ 0.3 [2],[7]
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured revolving loan    
Coupon 8.17% [3] 5.50% [1]
Spread 4.50% [3] 4.50% [1]
Principal $ 0.7 [4],[5] $ 0.2 [2],[7]
Amortized Cost 0.7 [4],[5] 0.2 [2],[7]
Fair Value $ 0.7 [4],[5] $ 0.2 [2],[7]
Investment, Identifier [Axis]: EPS NASS Parent, Inc., First lien senior secured loan    
Coupon 9.42% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 0.2 [4],[5] $ 30.5 [2],[7]
Amortized Cost 0.2 [4],[5] 30.5 [2],[7]
Fair Value $ 0.2 [4],[5] $ 30.5 [2],[7]
Investment, Identifier [Axis]: EPS NASS Parent, Inc., First lien senior secured revolving loan    
Coupon 9.40% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 0.6 [4],[5],[13] $ 0.9 [2],[7],[14]
Amortized Cost 0.6 [4],[5],[13] 0.9 [2],[7],[14]
Fair Value 0.6 [4],[5],[13] 0.9 [2],[7],[14]
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC    
Fair Value $ 2.4 $ 2.8
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC, Class A units    
Shares   3,500,000
Amortized Cost [2]   $ 3.5
Fair Value [2]   2.8
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC, Class A-1 units    
Shares 96,897  
Amortized Cost [5] $ 2.3  
Fair Value [5] $ 2.3  
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC, Class A-2 units    
Shares 3,500  
Amortized Cost $ 3.5  
Fair Value $ 0.1  
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P., First lien senior secured loan    
Coupon [3] 8.96%  
Spread [3] 6.25%  
Principal [4],[5] $ 6.8  
Amortized Cost [4],[5] 6.8  
Fair Value [4],[5] $ 6.7  
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P., Limited partner interests    
Shares 4,818,000  
Amortized Cost $ 4.8  
Fair Value 4.8  
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC    
Fair Value $ 2.3 $ 23.1
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC, Class A common units    
Shares 67,972 67,972
Amortized Cost $ 16.4 $ 16.4 [2]
Fair Value 0.0 0.0 [2]
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC, First lien senior secured loan    
Principal 28.8 [5],[9] 26.3 [2],[10]
Amortized Cost 25.5 [5],[9] 25.5 [2],[10]
Fair Value 1.5 [5],[9] 18.4 [2],[10]
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC, First lien senior secured revolving loan    
Principal 15.9 [5],[9] 6.7 [2],[10]
Amortized Cost 14.5 [5],[9] 6.5 [2],[10]
Fair Value $ 0.8 [5],[9] $ 4.7 [2],[10]
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc, Preferred equity    
Shares 4,599  
Amortized Cost [5] $ 4.6  
Fair Value [5] $ 6.0  
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [7]   $ 62.0
Amortized Cost [7]   61.9
Fair Value [7]   $ 61.9
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 1    
Coupon [3] 9.01%  
Spread [3] 5.50%  
Principal [4],[5] $ 61.5  
Amortized Cost [4],[5] 61.5  
Fair Value [4],[5] $ 60.3  
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 2    
Coupon [3] 8.79%  
Spread 5.50% [3] 5.50% [1]
Principal $ 5.8 [4],[5] $ 20.5 [2],[7]
Amortized Cost 5.8 [4],[5] 20.5 [2],[7]
Fair Value $ 5.6 [4],[5] $ 20.5 [2],[7]
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [2],[7]   $ 2.3
Amortized Cost [2],[7]   2.3
Fair Value [2],[7]   $ 2.3
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan 1    
Coupon [3] 8.57%  
Spread [3] 5.50%  
Principal [4],[5] $ 3.1  
Amortized Cost [4],[5] 3.1  
Fair Value [4],[5] $ 3.0  
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan 2    
Coupon [3] 10.75%  
Spread [3] 4.50%  
Principal [4] $ 1.0  
Amortized Cost [4] 1.0  
Fair Value [4] $ 1.0  
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., Preferred equity    
Shares   4,599
Amortized Cost   $ 4.6
Fair Value   $ 5.5
Investment, Identifier [Axis]: Elemica Parent, Inc. h& EZ Elemica Holdings, Inc., First lien senior secured loan 2    
Coupon [1]   6.50%
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC    
Amortized Cost   $ 14.2
Fair Value   $ 14.2
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan    
Coupon 9.43% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 8.8 [4],[5] $ 8.7 [2],[7]
Amortized Cost 8.8 [4],[5] 8.7 [2],[7]
Fair Value $ 8.8 [4],[5] $ 8.7 [2],[7]
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 2    
Coupon 8.84% [3] 6.50% [1]
Spread 6.00% [3] 5.50% [1]
Principal $ 10.3 [4],[5] $ 0.3 [2],[7]
Amortized Cost 10.3 [4],[5] 0.3 [2],[7]
Fair Value $ 10.3 [4],[5] $ 0.3 [2],[7]
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 3    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 5.2
Amortized Cost [2],[7]   5.2
Fair Value [2],[7]   $ 5.2
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured revolving loan    
Coupon [3] 9.16%  
Spread [3] 6.00%  
Principal [4],[5],[13] $ 1.4  
Amortized Cost [4],[5],[13] 1.4  
Fair Value [4],[5],[13] $ 1.4  
Investment, Identifier [Axis]: Emergency Communications Network, LLC, First lien senior secured loan    
Coupon 10.33% [3] 8.75% [1]
Coupon, PIK 5.13% [3] 5.12% [1]
Spread 7.75% [3] 7.75% [1]
Principal $ 47.8 [4],[5] $ 46.0 [2],[7]
Amortized Cost 47.7 [4],[5] 46.0 [2],[7]
Fair Value $ 43.0 [4],[5] $ 42.4 [2],[7]
Investment, Identifier [Axis]: Emergency Communications Network, LLC, First lien senior secured revolving loan    
Coupon [3] 10.70%  
Coupon, PIK [3] 5.13%  
Spread [3] 7.75%  
Principal [4],[5] $ 6.7  
Amortized Cost [4],[5] 6.7  
Fair Value [4],[5] $ 6.1  
Investment, Identifier [Axis]: Ensemble RCM, LLC, First lien senior secured loan    
Coupon [3] 7.81%  
Spread [3] 5.00%  
Principal [4] $ 2.5  
Amortized Cost [4] 2.5  
Fair Value [4] $ 2.5  
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [2],[7]   $ 4.6
Amortized Cost [2],[7]   4.6
Fair Value [2],[7]   $ 4.6
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 1    
Coupon [3] 7.19%  
Spread [3] 6.00%  
Principal [5] $ 5.2  
Amortized Cost [5] 5.9  
Fair Value [5] $ 5.1  
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 2    
Coupon 9.42% [3] 5.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 6.0 [2]
Amortized Cost 0.1 [4],[5] 6.0 [2]
Fair Value $ 0.1 [4],[5] $ 6.0 [2]
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 3    
Coupon 9.42% [3] 6.50% [1]
Spread 5.75% [3] 5.50% [1]
Principal $ 0.1 [4],[5] $ 0.1 [2],[7]
Amortized Cost 0.1 [4],[5] 0.1 [2],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [2],[7]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, Class A units    
Shares 6,447 6,099
Amortized Cost $ 22.9 [5] $ 20.9 [2]
Fair Value $ 37.8 [5] $ 34.4 [2]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan    
Coupon [3] 8.03%  
Spread [3] 5.75%  
Principal [4],[5] $ 78.3  
Amortized Cost [4],[5] 78.3  
Fair Value [4],[5] $ 77.5  
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 1    
Coupon [1]   6.75%
Spread [1]   5.75%
Principal [2],[7]   $ 72.7
Amortized Cost [2],[7]   72.7
Fair Value [2],[7]   $ 72.7
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 2    
Coupon 8.03% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 48.3 [4],[5] $ 80.4 [2],[7]
Amortized Cost 48.3 [4],[5] 80.4 [2],[7]
Fair Value $ 47.8 [4],[5] $ 80.4 [2],[7]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 3    
Coupon [3] 8.07%  
Spread [3] 5.75%  
Principal [4],[5] $ 13.8  
Amortized Cost [4],[5] 13.8  
Fair Value [4],[5] 13.7  
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value 0.0 [15] 0.0 [16]
Investment, Identifier [Axis]: European Capital UK SME Debt LP    
Fair Value $ 23.7 $ 26.9
Investment, Identifier [Axis]: European Capital UK SME Debt LP, Limited partnership interest    
Shares (as a percent) 45.00% 45.00%
Amortized Cost $ 18.0 [6] $ 18.8 [8],[19]
Fair Value $ 23.7 [6] $ 26.9 [8],[19]
Investment, Identifier [Axis]: Everspin Technologies, Inc., Warrant to purchase shares of common stock    
Shares   18,461
Amortized Cost [2]   $ 0.4
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Everspin Technologies, Inc., Warrant to purchase up to 18,461 shares of common stock    
Shares 18,461  
Amortized Cost $ 0.4  
Fair Value $ 0.0  
Investment, Identifier [Axis]: Evolent Health LLC, First lien senior secured loan    
Coupon [3] 9.20%  
Spread [3] 5.50%  
Principal [4],[5],[6] $ 7.8  
Amortized Cost [4],[5],[6] 7.8  
Fair Value [4],[5],[6] $ 7.7  
Investment, Identifier [Axis]: Excelligence Holdings Corp., First lien senior secured loan    
Coupon 9.67% [3] 7.00% [1]
Coupon, PIK 4.50% [3] 4.50% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 9.1 [4],[5] $ 9.6 [2],[7]
Amortized Cost 9.1 [4],[5] 9.6 [2],[7]
Fair Value $ 9.1 [4],[5] $ 9.3 [2],[7]
Investment, Identifier [Axis]: Explorer Investor, Inc, First lien senior secured loan    
Coupon [3] 9.03%  
Spread [3] 6.00%  
Principal [4],[5] $ 1.2  
Amortized Cost [4],[5] 1.1  
Fair Value [4],[5] $ 1.1  
Investment, Identifier [Axis]: ExtraHop Networks, Inc., First lien senior secured loan    
Coupon [1]   8.50%
Spread [1]   7.50%
Principal [2],[7]   $ 16.6
Amortized Cost [2],[7]   16.6
Fair Value [2],[7]   $ 16.4
Investment, Identifier [Axis]: ExtraHop Networks, Inc., First lien senior secured loan 2    
Coupon [1]   8.50%
Spread [1]   7.50%
Principal [2],[7]   $ 1.1
Amortized Cost [2],[7]   1.1
Fair Value [2],[7]   $ 1.0
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan 1    
Coupon [3] 11.17%  
Spread [3] 7.50%  
Principal [4],[5] $ 16.6  
Amortized Cost [4],[5] 16.6  
Fair Value [4],[5] $ 16.6  
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan 2    
Coupon [3] 11.17%  
Spread [3] 7.50%  
Principal [4],[5] $ 3.0  
Amortized Cost [4],[5] 3.0  
Fair Value [4],[5] $ 3.0  
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan    
Coupon [1]   7.50%
Spread [1]   6.50%
Principal [2],[7]   $ 3.2
Amortized Cost [2],[7]   3.2
Fair Value [2],[7]   $ 3.2
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan 1    
Coupon [3] 9.13%  
Spread [3] 5.75%  
Principal [4],[5] $ 3.2  
Amortized Cost [4],[5] 3.2  
Fair Value [4],[5] $ 3.2  
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan 2    
Coupon 9.05% [3] 7.50% [1]
Spread 5.75% [3] 6.50% [1]
Principal $ 1.4 [4],[5] $ 1.4 [2],[7]
Amortized Cost 1.4 [4],[5] 1.4 [2],[7]
Fair Value $ 1.4 [4],[5] $ 1.4 [2],[7]
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured revolving loan    
Coupon [1]   7.50%
Spread [1]   6.50%
Principal [2],[7]   $ 1.5
Amortized Cost [2],[7]   1.5
Fair Value [2],[7]   $ 1.5
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, Class A units    
Shares 113,219 113,219
Amortized Cost $ 11.1 [5] $ 11.1 [2]
Fair Value $ 28.2 [5] $ 19.2 [2]
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, First lien senior secured loan    
Coupon 8.28% [3] 5.36% [1]
Spread 5.25% [3] 5.25% [1]
Principal $ 0.1 [4],[5] $ 0.1 [2]
Amortized Cost 0.1 [4],[5] 0.1 [2]
Fair Value 0.1 [4],[5] $ 0.1 [2]
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: Faraday&Fhuture Inc., FF Inc., Faraday SPE, LLC and Faraday Future Intelligent Electric Inc., Warrant to purchase shares of Class A common stock    
Shares   633,008
Investment, Identifier [Axis]: Faraday&Future Inc., FF Inc., Faraday SPE, LLC and Faraday Future Intelligent Electric Inc., Second lien senior secured loan    
Coupon, PIK [1]   14.00%
Principal [2]   $ 80.3
Amortized Cost [2]   79.9
Fair Value [2]   80.3
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    
Amortized Cost [2]   2.3
Fair Value [2]   $ 1.2
Investment, Identifier [Axis]: Faraday&Future Inc., FF Inc., Faraday SPE, LLC and Faraday Future Intelligent Electric Inc., Warrant to purchase up to 633,008 shares of Class A common stock    
Shares 633,008  
Amortized Cost [5] $ 2.3  
Fair Value [5] $ 0.2  
Investment, Identifier [Axis]: Ferrellgas, L.P. and Ferrellgas Partners L.P., Class B units    
Shares 59,428  
Amortized Cost $ 14.9  
Fair Value $ 14.9  
Investment, Identifier [Axis]: Ferrellgas, L.P. and Ferrellgas Partners L.P., Senior preferred units    
Coupon [3] 8.96%  
Shares 59,422  
Amortized Cost $ 59.5  
Fair Value $ 60.0  
Investment, Identifier [Axis]: Ferrellgas, L.P., Senior preferred units    
Coupon [1]   8.96%
Shares   55,708
Amortized Cost   $ 55.7
Fair Value   $ 55.7
Investment, Identifier [Axis]: First Insight, Inc., Warrant to purchase units of Series C preferred stock    
Shares   122,827
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: First Insight, Inc., Warrant to purchase up to 122,827 units of Series C preferred stock    
Shares 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    
Coupon 8.02% [3] 5.50% [1]
Spread 5.50% [3] 4.75% [1]
Principal $ 29.7 [4],[5] $ 30.0 [7]
Amortized Cost 29.7 [4],[5] 30.0 [7]
Fair Value $ 29.7 [4],[5] $ 29.3 [7]
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured loan 2    
Coupon 8.02% [3] 5.50% [1]
Spread 5.50% [3] 4.75% [1]
Principal $ 1.1 [4],[5] $ 1.1 [7]
Amortized Cost 1.1 [4],[5] 1.1 [7]
Fair Value $ 1.1 [4],[5] $ 1.1 [7]
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured revolving loan    
Coupon 8.30% [3] 5.50% [1]
Spread 5.50% [3] 4.75% [1]
Principal $ 6.1 [4],[5],[13] $ 4.9 [2],[7]
Amortized Cost 6.1 [4],[5],[13] 4.9 [2],[7]
Fair Value $ 6.1 [4],[5],[13] $ 4.8 [2],[7]
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., Series A preferred stock    
Shares 1,272 1,272
Amortized Cost $ 0.7 [5] $ 0.7 [2]
Fair Value $ 1.4 [5] $ 1.1 [2]
Investment, Identifier [Axis]: Florida Food Products, LLC, First lien senior secured loan    
Coupon 8.12% [3] 5.75% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 14.3 [4],[5] $ 4.3 [2],[7]
Amortized Cost 14.0 [4],[5] 4.3 [2],[7]
Fair Value $ 13.8 [4],[5] $ 4.3 [2],[7]
Investment, Identifier [Axis]: Florida Food Products, LLC, First lien senior secured loan 2    
Coupon [3] 8.03%  
Spread [3] 5.00%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: Florida Food Products, LLC, Second lien senior secured loan    
Coupon 11.12% [3] 8.75% [1]
Spread 8.00% [3] 8.00% [1]
Principal $ 71.8 [4],[5] $ 71.8 [2],[7]
Amortized Cost 71.8 [4],[5] 71.8 [2],[7]
Fair Value $ 69.6 [4],[5] $ 71.1 [2],[7]
Investment, Identifier [Axis]: Flow Control Solutions, Inc., First lien senior secured loan    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [7]   $ 10.8
Amortized Cost [7]   10.8
Fair Value [7]   $ 10.8
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan    
Coupon, PIK [1]   10.50%
Spread [1]   9.50%
Principal [2],[7]   $ 18.7
Amortized Cost [2],[7]   18.4
Fair Value [2],[7]   $ 18.5
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 1    
Coupon, PIK [3] 13.13%  
Spread [3] 9.50%  
Principal [4],[5] $ 23.2  
Amortized Cost [4],[5] 22.9  
Fair Value [4],[5] $ 23.2  
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 2    
Coupon, PIK [3] 12.67%  
Spread [3] 9.00%  
Principal [4],[5] $ 12.3  
Amortized Cost [4],[5] 12.3  
Fair Value [4],[5] $ 12.3  
Investment, Identifier [Axis]: Foundation Consumer Brands, LLC, First lien senior secured loan    
Coupon 8.43% [3] 7.38% [1]
Spread 5.50% [3] 6.38% [1]
Principal $ 13.0 [4],[5] $ 24.9 [7]
Amortized Cost 12.8 [4],[5] 24.4 [7]
Fair Value $ 13.0 [4],[5] $ 24.8 [7]
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan    
Coupon 9.17% [3] 6.50% [1]
Spread 5.50% [3] 5.75% [1]
Principal $ 133.0 [4],[5] $ 169.5 [2],[7]
Amortized Cost 133.0 [4],[5] 169.5 [2],[7]
Fair Value $ 133.0 [4],[5] $ 167.7 [2],[7]
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan 2    
Coupon [3] 8.75%  
Spread [3] 5.50%  
Principal [4],[5] $ 33.2  
Amortized Cost [4],[5] 33.2  
Fair Value [4],[5] $ 33.2  
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured revolving loan    
Coupon [3] 8.74%  
Spread [3] 5.75%  
Principal [4] $ 1.1  
Amortized Cost [4] 1.1  
Fair Value [4] $ 1.1  
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC, Class A preferred units    
Coupon, PIK 9.00% [3] 9.00% [1]
Shares 4,574 4,574
Amortized Cost $ 6.7 $ 6.2
Fair Value $ 7.2 $ 6.7
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC, Class B common units    
Shares 499,050 499,050
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 8.4 $ 7.9
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC, First lien senior secured loan    
Coupon [1]   6.25%
Spread [1]   5.25%
Principal [7]   $ 14.9
Amortized Cost [7]   14.9
Fair Value [7]   $ 14.9
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC, First lien senior secured loan 1    
Coupon [3] 11.00%  
Spread [3] 4.75%  
Principal [4],[5] $ 14.7  
Amortized Cost [4],[5] 14.7  
Fair Value [4],[5] $ 14.7  
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC, First lien senior secured loan 2    
Coupon 11.00% [3] 6.25% [1]
Spread 4.75% [3] 5.25% [1]
Principal $ 0.1 [4],[5] $ 0.1 [2],[7]
Amortized Cost 0.1 [4],[5] 0.1 [2],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [2],[7]
Investment, Identifier [Axis]: GF Parent LLC, Class A common units    
Shares 60,000  
Amortized Cost $ 0.1  
Fair Value $ 0.0  
Investment, Identifier [Axis]: GF Parent LLC, Class A preferred units    
Shares 2,940  
Amortized Cost $ 2.9  
Fair Value $ 0.0  
Investment, Identifier [Axis]: GF Parent LLC, Class B common units    
Shares 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 14,853,569  
Investment, Identifier [Axis]: GHX Ultimate Parent Corporation, Commerce Parent, Inc. and Commerce Topco, LLC, Class A units    
Shares   14,013,303
Amortized Cost $ 15.7 [5] $ 14.0 [2]
Fair Value $ 28.5 [5] $ 32.2 [2]
Investment, Identifier [Axis]: GHX Ultimate Parent Corporation, Commerce Parent, Inc. and Commerce Topco, LLC, Second lien senior secured loan    
Coupon 9.63% [3] 7.50% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 114.1 [4],[5] $ 114.0 [2],[7]
Amortized Cost 114.1 [4],[5] 114.0 [2],[7]
Fair Value $ 110.7 [4],[5] $ 114.0 [2],[7]
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured loan    
Coupon 9.70% [3] 6.75% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 40.2 [4],[5] $ 35.1 [2],[7]
Amortized Cost 40.2 [4],[5] 35.1 [2],[7]
Fair Value $ 39.8 [4],[5] $ 34.8 [2],[7]
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured revolving loan    
Coupon [3] 9.70%  
Spread [3] 6.00%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: GNZ Energy Bidco Limited and Galileo Co-investment Trust I, Common units    
Shares 17,616,667  
Amortized Cost [5],[6] $ 10.9  
Fair Value [5],[6] $ 9.9  
Investment, Identifier [Axis]: GNZ Energy Bidco Limited and Galileo Co-investment Trust I, First lien senior secured loan    
Coupon [3] 10.65%  
Spread [3] 6.75%  
Principal [4],[5],[6] $ 27.3  
Amortized Cost [4],[5],[6] 30.5  
Fair Value [4],[5],[6] $ 26.8  
Investment, Identifier [Axis]: GPM Investments, LLC and ARKO Corp., Common stock    
Shares 2,088,478 2,088,478
Amortized Cost $ 19.8 $ 19.8
Fair Value $ 25.5 $ 18.3
Investment, Identifier [Axis]: GPM Investments, LLC and ARKO Corp., Warrant to purchase common stock    
Shares   1,088,780
Amortized Cost [2]   $ 1.6
Fair Value [2]   $ 1.9
Investment, Identifier [Axis]: GPM Investments, LLC and ARKO Corp., Warrant to purchase up to 1,088,780 units of common stock    
Shares 1,088,780  
Amortized Cost [5] $ 1.6  
Fair Value [5] $ 1.9  
Investment, Identifier [Axis]: GSV PracticeTek Holdings, LLC, Class A units    
Coupon, PIK [3] 8.00%  
Shares 12,429,675  
Amortized Cost [5] $ 0.7  
Fair Value [5] $ 13.6  
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured loan    
Coupon 8.92% [3] 6.00% [1]
Coupon, PIK [3] 1.00%  
Spread 5.25% [3] 5.25% [1]
Principal $ 31.7 [4],[5] $ 59.1 [2],[7]
Amortized Cost 31.7 [4],[5] 59.1 [2],[7]
Fair Value $ 31.0 [4],[5] $ 58.5 [2],[7]
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured loan 2    
Coupon [3] 8.92%  
Coupon, PIK [3] 1.00%  
Spread [3] 5.25%  
Principal [4] $ 4.2  
Amortized Cost [4] 4.2  
Fair Value [4] 4.1  
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] 0.0 [16]
Investment, Identifier [Axis]: Garden Fresh Restaurant Corp. and GFRC Holdings LLC, First lien senior secured loan    
Principal [2],[10]   21.6
Amortized Cost [2],[10]   0.0
Fair Value [2],[10]   0.0
Investment, Identifier [Axis]: Garden Fresh Restaurant Corp. and GFRC Holdings LLC, First lien senior secured revolving loan    
Principal [2],[10]   7.5
Amortized Cost [2],[10]   0.0
Fair Value [2],[10]   $ 0.0
Investment, Identifier [Axis]: Gehl Foods, LLC and GF Parent LLC, Class A common units    
Shares   60,000
Amortized Cost [2]   $ 0.1
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Gehl Foods, LLC and GF Parent LLC, Class A preferred units    
Shares   2,940
Amortized Cost [2]   $ 2.9
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Gehl Foods, LLC and GF Parent LLC, Class B common units    
Shares   0.26
Amortized Cost [2]   $ 0.0
Fair Value [2]   0.0
Investment, Identifier [Axis]: Genesis Acquisition Co. ahnd Genesis Ultimate Holding Co., Class A common stock    
Amortized Cost [2]   $ 0.8
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Class A common stock    
Shares 8.39 8.39
Amortized Cost [5] $ 0.8  
Fair Value $ 1.4 [5] $ 0.9 [2]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan    
Coupon [1]   5.25%
Spread [1]   4.50%
Principal [2],[7]   $ 9.1
Amortized Cost [2],[7]   9.1
Fair Value [2],[7]   $ 9.0
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan 1    
Coupon [3] 8.42%  
Spread [3] 4.25%  
Principal [4],[5] $ 9.0  
Amortized Cost [4],[5] 9.0  
Fair Value [4],[5] $ 9.0  
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan 2    
Coupon 7.92% [3] 4.22% [1]
Spread 3.75% [3] 4.00% [1]
Principal $ 0.2 [5] $ 0.2 [2]
Amortized Cost 0.2 [5] 0.2 [2]
Fair Value $ 0.2 [5] $ 0.2 [2]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured revolving loan    
Coupon 7.92% [3] 4.22% [1]
Spread 3.75% [3] 4.00% [1]
Principal $ 1.5 [5] $ 1.5 [2]
Amortized Cost 1.5 [5] 1.5 [2]
Fair Value $ 1.5 [5] $ 1.5 [2]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan    
Coupon [1]   8.25%
Spread [1]   7.50%
Principal [2],[7]   $ 21.1
Amortized Cost [2],[7]   21.1
Fair Value [2],[7]   $ 20.7
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 1    
Coupon [3] 9.79%  
Spread [3] 7.50%  
Principal [5] $ 32.4  
Amortized Cost [5] 32.4  
Fair Value [5] $ 32.0  
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 2    
Coupon 9.79% [3] 7.63% [1]
Spread 7.50% [3] 7.50% [1]
Principal $ 21.1 [4],[5] $ 32.4 [2]
Amortized Cost 21.1 [4],[5] 32.4 [2]
Fair Value $ 20.9 [4],[5] $ 31.4 [2]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 3    
Coupon 9.79% [3] 7.70% [1]
Spread 7.50% [3] 7.50% [1]
Principal $ 7.5 [5] $ 7.5 [2]
Amortized Cost 7.5 [5] 7.5 [2]
Fair Value $ 7.4 [5] $ 7.3 [2]
Investment, Identifier [Axis]: Genomatica, Inc., Warrant to purchase 322,422 shares of Series D preferred stock    
Shares 322,422  
Amortized Cost $ 0.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: Genomatica, Inc., Warrant to purchase shares of Series D preferred stock    
Shares   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 [3] 7.37%  
Spread [3] 4.25%  
Principal [4],[5],[11] $ 10.8  
Amortized Cost [4],[5],[11] 10.1  
Fair Value [4],[5],[11] $ 9.3  
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., First lien senior secured loan 2    
Coupon [3] 6.81%  
Spread [3] 4.25%  
Principal [4],[5],[11] $ 25.2  
Amortized Cost [4],[5],[11] 23.3  
Fair Value [4],[5],[11] $ 21.8  
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Second lien senior secured loan    
Coupon 9.76% [3] 7.50% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 95.4 [4],[5] $ 95.4 [2],[7]
Amortized Cost 95.4 [4],[5] 95.4 [2],[7]
Fair Value $ 83.0 [4],[5] $ 94.5 [2],[7]
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Warrant to purchase units of common stock 1    
Shares   115,733
Amortized Cost [2]   $ 0.9
Fair Value [2]   $ 3.0
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Warrant to purchase units of common stock 2    
Shares   1,926.57
Amortized Cost [2]   $ 0.1
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Warrant to purchase up to 1,926.57 units of common stock    
Shares 1,926.57  
Amortized Cost [5] $ 0.1  
Fair Value [5] $ 0.0  
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Warrant to purchase up to 115,733 units of common stock    
Shares 115,733  
Amortized Cost [5] $ 0.9  
Fair Value [5] $ 2.2  
Investment, Identifier [Axis]: Global Music Rights, LLC, First lien senior secured loan    
Coupon 9.17% [3] 6.50% [1]
Spread 5.50% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 22.3 [2],[7]
Amortized Cost 0.1 [4],[5] 22.3 [2],[7]
Fair Value $ 0.1 [4],[5] $ 22.1 [2],[7]
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, First lien senior secured loan    
Coupon [3] 10.18%  
Spread [3] 7.38%  
Principal [4],[5] $ 17.7  
Amortized Cost [4],[5] 17.7  
Fair Value [4],[5] $ 17.5  
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, Series E-1 preferred stock    
Coupon [3] 600.00%  
Shares 166,059  
Amortized Cost [5] $ 14.2  
Fair Value [5] $ 14.2  
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, Warrant to purchase up to 43,154 shares of Series E-1 preferred stock    
Shares 43,154  
Amortized Cost $ 0.0  
Fair Value $ 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 [3] 7.00%  
Spread [3] 6.00%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 2    
Coupon [3] 9.17%  
Spread [3] 5.50%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 3    
Coupon [3] 9.17%  
Spread [3] 5.50%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, First lien senior secured loan 4    
Coupon [3] 8.31%  
Spread [3] 5.50%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, Preferred units    
Coupon, PIK [3] 14.00%  
Shares 1,828,644  
Amortized Cost $ 57.5  
Fair Value $ 57.5  
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC, Senior subordinated loan    
Coupon, PIK [3] 10.50%  
Principal [5] $ 43.5  
Amortized Cost [5] 43.5  
Fair Value [5] $ 41.6  
Investment, Identifier [Axis]: Green Street Parent, LLC and Green Street Intermediate Holdings, LLC, First lien senior secured loan    
Coupon 8.62% [3] 6.50% [1]
Spread 5.50% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 23.7 [2],[7]
Amortized Cost 0.1 [4],[5] 23.7 [2],[7]
Fair Value $ 0.1 [4],[5] $ 23.7 [2],[7]
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, Common units    
Shares 5,827 5,827
Amortized Cost $ 5.8 $ 5.8
Fair Value $ 3.9 $ 6.8
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan    
Coupon 6.21% [3] 6.00% [1]
Spread 3.69% [3] 5.00% [1]
Principal $ 26.4 [5],[11] $ 75.0 [2],[7]
Amortized Cost 23.7 [5],[11] 74.6 [2],[7]
Fair Value $ 20.5 [5],[11] $ 75.0 [2],[7]
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 2    
Coupon [3] 6.52%  
Spread [3] 4.00%  
Principal [5],[11] $ 3.3  
Amortized Cost [5],[11] 3.0  
Fair Value [5],[11] $ 2.6  
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 3    
Coupon [3] 7.52%  
Spread [3] 5.00%  
Principal [4],[5],[11] $ 0.1  
Amortized Cost [4],[5],[11] 0.1  
Fair Value [4],[5],[11] $ 0.1  
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, Second lien senior secured loan    
Coupon 10.12% [3] 7.10% [1]
Spread 7.00% [3] 7.00% [1]
Principal $ 73.0 [5] $ 73.0 [2]
Amortized Cost 73.0 [5] 73.0 [2]
Fair Value $ 61.3 [5] $ 73.0 [2]
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, Class A units    
Shares 16,980 16,980
Amortized Cost $ 1.7 [5] $ 1.7 [2]
Fair Value $ 2.5 [5] $ 2.3 [2]
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan    
Coupon 8.37% [3] 6.00% [1]
Spread 5.25% [3] 5.25% [1]
Principal $ 60.7 [4],[5] $ 61.0 [7]
Amortized Cost 60.7 [4],[5] 61.0 [7]
Fair Value $ 60.7 [4],[5] $ 61.0 [7]
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan 2    
Coupon 8.37% [3] 6.00% [1]
Spread 5.25% [3] 5.25% [1]
Principal $ 0.1 [4],[5] $ 0.1 [2],[7]
Amortized Cost 0.1 [4],[5] 0.1 [2],[7]
Fair Value 0.1 [4],[5] 0.1 [2],[7]
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 25,490 25,490
Amortized Cost $ 2.5 [5] $ 2.5 [2]
Fair Value $ 2.3 [5] $ 2.9 [2]
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured loan    
Coupon 9.00% [3] 6.50% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 4.7 [4],[5] $ 2.6 [2],[7]
Amortized Cost 4.7 [4],[5] 2.6 [2],[7]
Fair Value $ 4.6 [4],[5] $ 2.6 [2],[7]
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured revolving loan    
Coupon 8.63% [3] 6.50% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 2.3 [4],[5] $ 0.5 [2],[7]
Amortized Cost 2.3 [4],[5] 0.5 [2],[7]
Fair Value $ 2.2 [4],[5] $ 0.5 [2],[7]
Investment, Identifier [Axis]: Halcon Holdings, LLC, First lien senior secured loan    
Coupon 10.67% [3] 7.17% [1]
Spread 7.00% [3] 7.00% [1]
Principal $ 10.5 [5] $ 19.0 [2]
Amortized Cost 10.2 [5] 18.7 [2]
Fair Value 10.5 [5] 18.9 [2]
Investment, Identifier [Axis]: Halex Holdings, Inc.    
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: Halex Holdings, Inc., Common stock    
Shares 51,853 51,853
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured loan    
Coupon 9.11% [3] 6.25% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 23.5 [4],[5] $ 22.7 [2],[7]
Amortized Cost 23.5 [4],[5] 22.7 [2],[7]
Fair Value 23.3 [4],[5] $ 22.5 [2],[7]
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured revolving loan    
Coupon [1]   6.25%
Spread [1]   5.50%
Principal [2],[7],[14]   $ 5.9
Amortized Cost 0.0 [15] 5.9 [2],[7],[14]
Fair Value $ 0.0 [15] 5.8 [2],[7],[14]
Investment, Identifier [Axis]: HealthEdge Sgoftware, Inc., First lien senior secured loan    
Fair Value [2],[7]   $ 79.2
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured loan    
Coupon 10.48% [3] 7.25% [1]
Spread 7.00% [3] 6.25% [1]
Principal $ 84.8 [4],[5] $ 79.2 [2],[7]
Amortized Cost 84.8 [4],[5] $ 79.2 [2],[7]
Fair Value [4],[5] 84.8  
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, First lien senior secured loan    
Coupon 8.02% [3] 6.50% [1]
Spread 5.50% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 40.9 [2],[7]
Amortized Cost 0.1 [4],[5] 40.9 [2],[7]
Fair Value 0.1 [4],[5] 40.5 [2],[7]
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC    
Fair Value   $ 69.4
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC    
Fair Value $ 191.5  
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC, Class A1 units    
Shares 100  
Amortized Cost $ 47.7  
Fair Value $ 81.0  
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC, Class A2 units    
Shares 3,296,184  
Amortized Cost $ 3.8  
Fair Value $ 4.0  
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC, First lien senior secured loan    
Coupon [3] 10.75%  
Spread [3] 7.00%  
Principal [4],[5] $ 106.5  
Amortized Cost [4],[5] 106.5  
Fair Value [4],[5] $ 106.5  
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC, Class A1 units    
Shares   100
Amortized Cost   $ 23.5
Fair Value   $ 30.4
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC, First lien senior secured loan    
Coupon [1]   8.00%
Spread [1]   7.00%
Principal [2],[7]   $ 39.0
Amortized Cost [2],[7]   39.0
Fair Value [2],[7]   $ 39.0
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan    
Coupon 8.81% [3] 6.75% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 34.6 [4],[5] $ 55.0 [2],[7]
Amortized Cost 34.6 [4],[5] 55.0 [2],[7]
Fair Value $ 34.2 [4],[5] $ 54.5 [2],[7]
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 2    
Coupon 8.83% [3] 6.75% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 12.3 [4],[5] $ 10.4 [2],[7]
Amortized Cost 12.3 [4],[5] 10.4 [2],[7]
Fair Value $ 12.2 [4],[5] $ 10.3 [2],[7]
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan 3    
Coupon [3] 8.21%  
Spread [3] 5.75%  
Principal [4],[5] $ 6.9  
Amortized Cost [4],[5] 6.9  
Fair Value [4],[5] $ 6.8  
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, Series A common units    
Coupon, PIK 10.00% [3] 10.00% [1]
Shares 4,649,000 4,649,000
Amortized Cost $ 5.0 [5] $ 5.0 [2]
Fair Value $ 7.0 [5] $ 11.1 [2]
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, Series A preferred units    
Coupon, PIK 10.00% [3] 10.00% [1]
Shares 96,763,324 96,763,329
Amortized Cost $ 108.8 [5] $ 101.1 [2]
Fair Value $ 102.5 [5] $ 101.2 [2]
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, Series C common units    
Coupon, PIK 10.00% [3] 10.00% [1]
Shares 4,979,318 4,979,318
Amortized Cost $ 0.2 [5] $ 0.2 [2]
Fair Value $ 7.5 [5] $ 11.9 [2]
Investment, Identifier [Axis]: HighTower Holding, LLC, Senior subordinated loan    
Coupon [3] 6.75%  
Principal [5],[6] $ 8.1  
Amortized Cost [5],[6] 6.7  
Fair Value [5],[6] $ 6.6  
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, Co-invest units    
Shares 59,230 59,230
Amortized Cost $ 5.9 [5] $ 5.9 [2]
Fair Value $ 3.6 [5] $ 3.5 [2]
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, First lien senior secured loan    
Coupon [3] 7.62%  
Spread [3] 4.50%  
Principal [4],[5],[11] $ 12.0  
Amortized Cost [4],[5],[11] 11.3  
Fair Value [4],[5],[11] $ 10.7  
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, First lien senior secured revolving loan    
Coupon 6.87% [3] 3.85% [1]
Spread 3.75% [3] 3.75% [1]
Principal $ 1.0 [5],[13] $ 5.9 [2],[14]
Amortized Cost 1.0 [5],[13] 5.9 [2],[14]
Fair Value $ 0.9 [5],[13] $ 5.8 [2],[14]
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC, Second lien senior secured loan    
Coupon 10.24% [3] 8.75% [1]
Spread 8.00% [3] 8.00% [1]
Principal $ 70.4 [4],[5] $ 70.4 [2],[7]
Amortized Cost 70.4 [4],[5] 70.4 [2],[7]
Fair Value $ 62.6 [4],[5] $ 66.1 [2],[7]
Investment, Identifier [Axis]: Hometown Food Company, First lien senior secured revolving loan    
Coupon [3] 8.12%  
Spread [3] 5.00%  
Principal [4],[5],[13] $ 0.7  
Amortized Cost [4],[5],[13] 0.7  
Fair Value [4],[5],[13] $ 0.7  
Investment, Identifier [Axis]: Honor Technology, Inc., First lien senior secured loan    
Coupon 12.63% [3] 11.00% [1]
Spread 10.00% [3] 10.00% [1]
Principal $ 2.5 [4],[5] $ 2.5 [2],[7]
Amortized Cost 2.4 [4],[5] 2.4 [2],[7]
Fair Value $ 2.4 [4],[5] $ 2.5 [2],[7]
Investment, Identifier [Axis]: Honor Technology, Inc., Warrant to purchase shares of series D-2 preferred stock    
Shares   133,333
Amortized Cost [2]   $ 0.1
Fair Value [2]   $ 0.1
Investment, Identifier [Axis]: Honor Technology, Inc., Warrant to purchase up to 133,333 units of series D-2 preferred stock    
Shares 133,333  
Amortized Cost [5] $ 0.1  
Fair Value [5] $ 0.0  
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, Common units    
Shares 4,243,657  
Amortized Cost [5] $ 8.8  
Fair Value [5] $ 6.1  
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured loan    
Coupon 8.64% [3] 6.25% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 60.5 [4],[5] $ 105.8 [2],[7]
Amortized Cost 60.5 [4],[5] 105.8 [2],[7]
Fair Value $ 56.3 [4],[5] $ 104.8 [2],[7]
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, First lien senior secured revolving loan    
Coupon 9.17% [3] 6.25% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 7.0 [4],[5] $ 1.6 [2],[7]
Amortized Cost 7.0 [4],[5] 1.6 [2],[7]
Fair Value $ 6.5 [4],[5] $ 1.4 [2],[7]
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, Senior subordinated loan    
Coupon, PIK 10.00% [3] 10.00% [1]
Principal $ 97.1 [5] $ 90.2 [2]
Amortized Cost 97.1 [5] 90.2 [2]
Fair Value $ 86.4 [5] $ 88.8 [2]
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC, and GI Insurity Topco LP, Company units    
Shares   4,243,657
Amortized Cost [2]   $ 8.8
Fair Value [2]   $ 8.8
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured loan    
Coupon [3] 8.41%  
Spread [3] 5.50%  
Principal [4],[5] $ 23.6  
Amortized Cost [4],[5] 23.6  
Fair Value [4],[5] $ 23.3  
Investment, Identifier [Axis]: IRI Holdings, Inc., IRI Group Holdings, Inc. and IRI Parent, L.P., Class A-1 common units    
Shares   90,500
Amortized Cost [2]   $ 9.1
Fair Value [2]   $ 26.1
Investment, Identifier [Axis]: IRI Holdings, Inc., IRI Group Holdings, Inc. and IRI Parent, L.P., First lien senior secured loan    
Coupon [1]   4.35%
Spread [1]   4.25%
Principal   $ 42.3
Amortized Cost   41.9
Fair Value   $ 42.3
Investment, Identifier [Axis]: IRI Holdings, Inc., IRI Group Holdings, Inc. and IRI Parent, L.P., Second lien senior secured loan    
Coupon [1]   8.10%
Spread [1]   8.00%
Principal [2]   $ 86.8
Amortized Cost [2]   85.9
Fair Value [2]   $ 86.8
Investment, Identifier [Axis]: IRI Holdings, Inc., IRI Group Holdings, Inc. and IRI Parent, L.P., Series A-1 preferred shares    
Coupon, PIK [1]   11.50%
Spread [1]   10.50%
Shares   46,900
Amortized Cost [2],[7]   $ 65.3
Fair Value [2],[7]   $ 66.0
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, LLC , Class A units    
Shares 10,000  
Amortized Cost [5] $ 10.0  
Fair Value [5] $ 10.0  
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, LLC , First lien senior secured loan    
Coupon [3] 9.31%  
Spread [3] 6.25%  
Principal [4],[5] $ 12.5  
Amortized Cost [4],[5] 12.5  
Fair Value [4],[5] $ 12.3  
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured loan    
Coupon [3] 8.52%  
Spread [3] 5.50%  
Principal [4],[5] $ 38.2  
Amortized Cost [4],[5] 38.2  
Fair Value [4],[5] $ 37.9  
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan    
Coupon [3] 8.25%  
Spread [3] 5.50%  
Principal [4],[5] $ 1.1  
Amortized Cost [4],[5] 1.1  
Fair Value [4],[5] $ 1.1  
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan 2    
Coupon [3] 10.75%  
Spread [3] 4.50%  
Principal [4] $ 0.7  
Amortized Cost [4] 0.7  
Fair Value [4] $ 0.7  
Investment, Identifier [Axis]: IV Rollover Holdings, LLC, Class B units    
Shares 170,490 170,490
Amortized Cost $ 0.0 $ 0.0 [2]
Fair Value $ 0.0 $ 0.1 [2]
Investment, Identifier [Axis]: IV Rollover Holdings, LLC, Class X units    
Shares 5,000,000 5,000,000
Amortized Cost $ 2.1 [5] $ 2.1 [2]
Fair Value $ 2.1 [5] $ 2.2 [2]
Investment, Identifier [Axis]: IfByPhone Inc., Warrant to purchase shares of Series C preferred stock    
Shares   124,300
Amortized Cost [2]   $ 0.1
Fair Value [2]   0.0
Investment, Identifier [Axis]: IfByPhone Inc., Warrant to purchase up to 124,300 shares of Series C preferred stock    
Shares 124,300  
Amortized Cost $ 0.1  
Fair Value 0.0  
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation    
Fair Value $ 57.8 $ 53.0
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Class A common stock    
Shares 48,082 48,082
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.2 $ 0.2
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Class B common stock    
Shares 431,055 431,055
Amortized Cost   $ 0.1
Fair Value $ 1.9 $ 1.4
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Senior subordinated loan    
Coupon 14.00% [3] 14.00% [1]
Principal $ 16.6 [5] $ 16.6 [2]
Amortized Cost 16.5 [5] 16.6 [2]
Fair Value $ 16.6 [5] $ 16.6 [2]
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Series A preferred stock    
Coupon, PIK [3] 8.00%  
Shares 73,804,135 73,804,135
Amortized Cost $ 1.3 $ 1.2
Fair Value 39.1 $ 34.8
Investment, Identifier [Axis]: Imaging Businhess Machines, L.L.C. and Scanner Holdings Corporation, Class B common stock    
Amortized Cost $ 0.1  
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan    
Coupon 11.67% [3] 8.75% [1]
Coupon, PIK [3] 0.25%  
Spread 8.00% [3] 7.75% [1]
Principal $ 117.0 [4],[5] $ 103.3 [2],[7]
Amortized Cost 117.0 [4],[5] 103.3 [2],[7]
Fair Value $ 105.3 [4],[5] $ 95.1 [2],[7]
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 2    
Coupon 11.67% [3] 8.75% [1]
Coupon, PIK [3] 0.25%  
Spread 8.00% [3] 7.75% [1]
Principal $ 5.0 [4],[5] $ 14.1 [2],[7]
Amortized Cost 5.0 [4],[5] 14.1 [2],[7]
Fair Value $ 4.5 [4],[5] $ 13.0 [2],[7]
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 3    
Coupon 11.67% [3] 8.75% [1]
Coupon, PIK [3] 0.25%  
Spread 8.00% [3] 7.75% [1]
Principal $ 1.3 [4],[5] $ 1.3 [2],[7]
Amortized Cost 1.3 [4],[5] 1.3 [2],[7]
Fair Value $ 1.1 [4],[5] $ 1.2 [2],[7]
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 4    
Coupon [1]   8.75%
Spread [1]   7.75%
Principal [2],[7]   $ 5.0
Amortized Cost [2],[7]   5.0
Fair Value [2],[7]   $ 4.6
Investment, Identifier [Axis]: Imprivata, Inc., Second lien senior secured loan    
Coupon [3] 9.28%  
Spread [3] 6.25%  
Principal [4],[5] $ 16.1  
Amortized Cost [4],[5] 15.9  
Fair Value [4],[5] $ 15.3  
Investment, Identifier [Axis]: Inmar, Inc., Second lien senior secured loan    
Coupon 11.12% [3] 9.00% [1]
Spread 8.00% [3] 8.00% [1]
Principal $ 28.3 [4],[5] $ 28.3 [2],[7]
Amortized Cost 28.1 [4],[5] 28.1 [2],[7]
Fair Value 27.7 [4],[5] $ 28.3 [2],[7]
Investment, Identifier [Axis]: Insightful Science, First lien senior secured loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 0.5
Amortized Cost [2],[7]   0.5
Fair Value [2],[7]   $ 0.5
Investment, Identifier [Axis]: Insightful Science, First lien senior secured loan 2    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [2],[7]   $ 16.2
Amortized Cost [2],[7]   16.2
Fair Value [2],[7]   $ 16.0
Investment, Identifier [Axis]: Insightful Science, First lien senior secured loan 3    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [2],[7]   $ 7.9
Amortized Cost [2],[7]   7.9
Fair Value [2],[7]   $ 7.9
Investment, Identifier [Axis]: Insightful Science, First lien senior secured loan 4    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [2],[7]   $ 7.6
Amortized Cost [2],[7]   7.6
Fair Value [2],[7]   $ 7.5
Investment, Identifier [Axis]: Insightful Science, Preferred units    
Coupon, PIK [1]   14.00%
Shares   1,828,645
Amortized Cost   $ 50.5
Fair Value   $ 50.5
Investment, Identifier [Axis]: Insightful Science, Senior subordinated loan    
Coupon, PIK [1]   10.50%
Principal [2]   $ 39.2
Amortized Cost [2]   39.2
Fair Value [2]   $ 38.8
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Common stock    
Shares   4
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Common stock 2    
Shares   16
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., First lien senior secured loan    
Coupon [1]   10.50%
Spread [1]   9.00%
Principal [2],[7]   $ 4.0
Amortized Cost [2],[7]   4.0
Fair Value [2],[7]   $ 4.0
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Senior preferred series A-1 shares    
Shares   151,056
Amortized Cost [2]   $ 98.2
Fair Value [2]   $ 36.4
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Series B preferred stock    
Shares   348,615
Amortized Cost [2]   $ 1.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Series B preferred stock 2    
Shares   1,401,385
Amortized Cost [2]   $ 4.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Series C preferred stock    
Shares   517,942
Amortized Cost [2]   $ 0.1
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Series C preferred stock 2    
Shares   1,994,644
Amortized Cost [2]   $ 0.5
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: IntraPac International LLC and IntraPac Canada Corporation, First lien senior secured loan    
Coupon [1]   6.25%
Spread [1]   5.50%
Principal [7],[8]   $ 14.8
Amortized Cost [7],[8]   14.8
Fair Value [7],[8]   $ 14.8
Investment, Identifier [Axis]: IntraPac International LLC and IntraPac Canada Corporation, First lien senior secured loan 2    
Coupon [1]   6.25%
Spread [1]   5.50%
Principal [2],[7],[8]   $ 10.8
Amortized Cost [2],[7],[8]   10.8
Fair Value [2],[7],[8]   $ 10.8
Investment, Identifier [Axis]: IntraPac International LLC and IntraPac Canada Corporation, First lien senior secured revolving loan    
Coupon [1]   6.25%
Spread [1]   5.50%
Principal [2],[7],[8]   $ 6.2
Amortized Cost [2],[7],[8]   6.2
Fair Value [2],[7],[8]   6.2
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P.    
Fair Value $ 1,958.2 $ 935.8
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P., Member interest    
Shares (as a percent) 100.00% 100.00%
Amortized Cost $ 1,372.5 $ 765.0 [8]
Fair Value $ 1,522.1 $ 919.8 [8]
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P., Senior subordinated loan    
Coupon 9.56% [3] 7.25% [1]
Spread 6.50% [3] 6.50% [1]
Principal $ 436.1 [4],[6] $ 16.0 [7],[8]
Amortized Cost 436.1 [4],[6] 16.0 [7],[8]
Fair Value 436.1 [4],[6] 16.0 [7],[8]
Investment, Identifier [Axis]: JDC Healthcare Management, LLC, First lien senior secured loan    
Principal 39.7 [5],[9] 37.2 [2],[10]
Amortized Cost 31.4 [5],[9] 31.7 [2],[10]
Fair Value 22.2 [5],[9] 26.5 [2],[10]
Investment, Identifier [Axis]: JDC Healthcare Management, LLC, First lien senior secured revolving loan    
Principal 4.7 [5],[9] 4.4 [2],[10]
Amortized Cost 3.7 [5],[9] 3.8 [2],[10]
Fair Value $ 2.6 [5],[9] $ 3.1 [2],[10]
Investment, Identifier [Axis]: JWC/KI Holdings, LLC, Membership units    
Shares 5,000 5,000
Amortized Cost $ 5.0 [5] $ 5.0 [2]
Fair Value 7.7 [5] 7.7 [2]
Investment, Identifier [Axis]: Javlin Three LLC, Javlin Four LLC, and Javlin Five LLC, First lien senior secured loan    
Principal 15.4 [5],[6],[9] 15.7 [2],[8],[10]
Amortized Cost 12.4 [5],[6],[9] 12.6 [2],[8],[10]
Fair Value $ 0.0 [5],[6],[9] $ 0.4 [2],[8],[10]
Investment, Identifier [Axis]: Jenny C Acquisition, Inc., Senior subordinated loan    
Coupon, PIK 8.00% [3] 8.00% [1]
Principal $ 1.5 [5] $ 1.4 [2]
Amortized Cost 1.5 [5] 1.4 [2]
Fair Value $ 1.5 [5] $ 1.4 [2]
Investment, Identifier [Axis]: Jim N Nicks Management, LLC, First lien senior secured loan    
Coupon [1]   6.25%
Spread [1]   5.25%
Principal [7]   $ 14.7
Amortized Cost [7]   14.7
Fair Value [7]   $ 14.7
Investment, Identifier [Axis]: Jim N Nicks Management, LLC, First lien senior secured revolving loan    
Coupon [1]   6.25%
Spread [1]   5.25%
Principal [2],[7]   $ 2.8
Amortized Cost [2],[7]   2.8
Fair Value [2],[7]   2.8
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., First lien senior secured loan    
Coupon [3] 9.99%  
Coupon, PIK [3] 4.50%  
Spread [3] 6.50%  
Principal [4],[5] $ 19.2  
Amortized Cost [4],[5] 18.3  
Fair Value [4],[5] $ 18.6  
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., Series A convertible preferred stock    
Shares 144,211  
Amortized Cost [5] $ 4.2  
Fair Value [5] $ 4.5  
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., Warrant to purchase up to 76,491 shares of common stock    
Shares 76,491  
Amortized Cost [5] $ 1.0  
Fair Value [5] 2.2  
Investment, Identifier [Axis]: Joyce Lane Capital LLC and Joyce Lane Financing SPV LLC (fka Ciena Capital LLC)    
Fair Value 0.0 0.3
Investment, Identifier [Axis]: Joyce Lane Capital LLC and Joyce Lane Financing SPV LLC (fka Ciena Capital LLC), Equity interests    
Amortized Cost 0.0 [6] 0.0 [2],[8]
Fair Value $ 0.0 [6] $ 0.0 [2],[8]
Investment, Identifier [Axis]: Joyce Lane Capital LLC and Joyce Lane Financing SPV LLC (fka Ciena Capital LLC), First lien senior secured loan    
Coupon [1]   4.13%
Spread [1]   4.00%
Principal [2],[8]   $ 0.3
Amortized Cost [2],[8]   0.3
Fair Value [2],[8]   $ 0.3
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, Common units    
Shares 799,000 799,000
Amortized Cost $ 0.8 [5] $ 0.8 [2]
Fair Value $ 2.8 [5] $ 1.6 [2]
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan    
Coupon 8.67% [3] 6.00% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 50.6 [4],[5] $ 0.6 [2],[7]
Amortized Cost 50.6 [4],[5] 0.6 [2],[7]
Fair Value $ 50.6 [4],[5] $ 0.6 [2],[7]
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 2    
Coupon 8.67% [3] 6.00% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 2.3 [4],[5] $ 51.0 [7]
Amortized Cost 2.3 [4],[5] 51.0 [7]
Fair Value $ 2.3 [4],[5] $ 51.0 [7]
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 3    
Coupon 8.27% [3] 6.00% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 0.2 [4],[5] $ 0.2 [2],[7]
Amortized Cost 0.2 [4],[5] 0.2 [2],[7]
Fair Value 0.2 [4],[5] $ 0.2 [2],[7]
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC), First lien senior secured revolving loan    
Coupon [3] 7.88%  
Coupon, PIK [3] 1.00%  
Spread [3] 5.00%  
Principal [4],[5] $ 1.8  
Amortized Cost [4],[5] 1.8  
Fair Value [4],[5] $ 1.8  
Investment, Identifier [Axis]: KBHS Acquisition, LLC, (d/b/a/ Alita Care, LLC) First lien senior secured revolving loan    
Coupon [1]   6.00%
Coupon, PIK [1]   1.00%
Spread [1]   5.00%
Principal [2],[7]   $ 0.8
Amortized Cost [2],[7]   0.8
Fair Value [2],[7]   $ 0.8
Investment, Identifier [Axis]: KC Culinarte Intermediate, LLC, First lien senior secured loan    
Coupon 6.87% [3] 4.75% [1]
Spread 3.75% [3] 3.75% [1]
Principal $ 28.9 [4] $ 29.1 [7]
Amortized Cost 28.7 [4] 28.9 [7]
Fair Value $ 27.4 [4] $ 27.6 [7]
Investment, Identifier [Axis]: KC Culinarte Intermediate, LLC, Second lien senior secured loan    
Coupon 10.87% [3] 8.75% [1]
Spread 7.75% [3] 7.75% [1]
Principal $ 35.7 [4],[5] $ 35.7 [2],[7]
Amortized Cost 35.7 [4],[5] 35.7 [2],[7]
Fair Value $ 32.8 [4],[5] $ 32.0 [2],[7]
Investment, Identifier [Axis]: KNPC HoldCo, LLC, First lien senior secured loan    
Coupon [3] 8.47%  
Spread [3] 5.50%  
Principal [4] $ 5.6  
Amortized Cost [4] 5.6  
Fair Value [4] $ 5.5  
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, Class A units    
Shares 13,292 13,292
Amortized Cost $ 1.1 $ 1.1
Fair Value $ 3.3 $ 0.9
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, First lien senior secured loan    
Coupon 8.53% [3] 7.00% [1]
Spread 5.50% [3] 6.00% [1]
Principal $ 12.6 [4],[5] $ 12.6 [7]
Amortized Cost 12.6 [4],[5] 12.6 [7]
Fair Value $ 12.6 [4],[5] $ 12.3 [7]
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, First lien senior secured loan 2    
Coupon 8.53% [3] 7.00% [1]
Spread 5.50% [3] 6.00% [1]
Principal $ 3.4 [4],[5] $ 3.4 [7]
Amortized Cost 3.4 [4],[5] 3.4 [7]
Fair Value $ 3.4 [4],[5] $ 3.3 [7]
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc, Preferred stock    
Shares 38,797  
Amortized Cost [5] $ 38.8  
Fair Value [5] $ 38.0  
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., First lien senior secured loan    
Coupon [3] 8.29%  
Spread [3] 5.75%  
Principal [4],[5] $ 167.0  
Amortized Cost [4],[5] 167.0  
Fair Value [4],[5] $ 163.7  
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., Preferred stock    
Coupon, PIK [3] 11.75%  
Investment, Identifier [Axis]: Kellermeyer Bergensons Services, LLC, First lien senior secured loan    
Coupon 8.81% [3] 6.75% [1]
Spread 6.00% [3] 5.75% [1]
Principal $ 81.9 [4],[5] $ 60.8 [2],[7]
Amortized Cost 81.7 [4],[5] 60.5 [2],[7]
Fair Value $ 78.6 [4],[5] $ 60.8 [2],[7]
Investment, Identifier [Axis]: Kellermeyer Bergensons Services, LLC, First lien senior secured loan 2    
Coupon 8.81% [3] 6.75% [1]
Spread 6.00% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 21.1 [2],[7]
Amortized Cost 0.1 [4],[5] 21.1 [2],[7]
Fair Value $ 0.1 [4],[5] $ 21.1 [2],[7]
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., Class A units    
Shares 4,549,000 4,549,000
Amortized Cost $ 4.5 [5] $ 4.5 [2]
Fair Value $ 5.7 [5] $ 5.3 [2]
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., First lien senior secured loan    
Coupon 7.92% [3] 5.25% [1]
Spread 4.25% [3] 4.25% [1]
Principal $ 40.7 [4],[5] $ 41.1 [7]
Amortized Cost 40.7 [4],[5] 41.1 [7]
Fair Value 40.3 [4],[5] $ 41.1 [7]
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Senior subordinated loan    
Coupon, PIK 10.00% [3] 10.00% [1]
Principal $ 58.5 [5] $ 54.3 [2]
Amortized Cost 55.9 [5] 51.2 [2]
Fair Value $ 58.5 [5] $ 52.7 [2]
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Senior subordinated loan 2    
Coupon, PIK 10.00% [3] 10.00% [1]
Principal $ 7.8 [5] $ 7.2 [2]
Amortized Cost 7.8 [5] 7.2 [2]
Fair Value $ 7.8 [5] $ 7.0 [2]
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Warrant to purchase Class C interests    
Shares   24.7581
Amortized Cost [2]   $ 3.6
Fair Value [2]   $ 4.2
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Warrant to purchase up to 24.7581 Class C interests    
Shares 24.7581  
Amortized Cost [5] $ 3.6  
Fair Value [5] $ 8.6  
Investment, Identifier [Axis]: LJP Purchaser, Inc. and LJP Topco, LP, Class A units    
Coupon, PIK [3] 8.00%  
Shares 5,098,000  
Amortized Cost [5] $ 5.1  
Fair Value [5] $ 5.1  
Investment, Identifier [Axis]: LJP Purchaser, Inc. and LJP Topco, LP, First lien senior secured loan    
Coupon [3] 9.16%  
Spread [3] 6.25%  
Principal [4],[5] $ 8.5  
Amortized Cost [4],[5] 8.5  
Fair Value [4],[5] $ 8.3  
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Membership units    
Shares 3,275,000 3,275,000
Amortized Cost $ 3.3 [6] $ 3.3 [8]
Fair Value $ 3.2 [6] $ 3.5 [8]
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan    
Coupon [1]   10.50%
Principal [2],[8]   $ 37.0
Amortized Cost [2],[8]   37.0
Fair Value [2],[8]   $ 37.0
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan 1    
Coupon [3] 10.50%  
Principal [5],[6] $ 3.0  
Amortized Cost [5],[6] 3.0  
Fair Value [5],[6] $ 3.0  
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan 2    
Coupon 10.50% [3] 10.50% [1]
Principal $ 37.0 [5],[6] $ 3.0 [2],[8]
Amortized Cost 37.0 [5],[6] 3.0 [2],[8]
Fair Value $ 37.0 [5],[6] $ 3.0 [2],[8]
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan    
Coupon 8.80% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 12.7 [4],[5] $ 6.9 [2],[7]
Amortized Cost 12.7 [4],[5] 6.9 [2],[7]
Fair Value $ 12.5 [4],[5] $ 6.8 [2],[7]
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan 2    
Coupon [3] 8.26%  
Spread [3] 6.00%  
Principal [4],[5] $ 6.3  
Amortized Cost [4],[5] 6.3  
Fair Value [4],[5] $ 6.2  
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan 3    
Coupon [3] 8.81%  
Spread [3] 6.00%  
Principal [4],[5] $ 5.0  
Amortized Cost [4],[5] 5.0  
Fair Value [4],[5] $ 4.9  
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, Membership interest    
Shares 2,771,000 2,771,000
Amortized Cost $ 2.8 $ 2.8
Fair Value $ 14.4 $ 2.8
Investment, Identifier [Axis]: LTG Acquisition, Inc., Class A membership units    
Shares 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 3,099,335 3,099,335
Amortized Cost $ 4.6 [5] $ 4.6 [2]
Fair Value $ 4.7 [5] $ 4.1 [2]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan    
Coupon [1]   6.75%
Spread [1]   5.75%
Principal [7]   $ 21.6
Amortized Cost [7]   21.6
Fair Value [7]   $ 21.6
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 1    
Coupon [3] 8.49%  
Spread [3] 5.75%  
Principal [4],[5] $ 23.2  
Amortized Cost [4],[5] 24.1  
Fair Value [4],[5] $ 22.5  
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 2    
Coupon 8.70% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 16.7 [4] $ 25.5 [7]
Amortized Cost 16.7 [4] 24.3 [7]
Fair Value $ 16.2 [4] $ 25.5 [7]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 3    
Coupon 8.81% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 4.4 [4],[5] $ 0.1 [2],[7]
Amortized Cost 4.4 [4],[5] 0.1 [2],[7]
Fair Value $ 4.3 [4],[5] $ 0.1 [2],[7]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 4    
Coupon 8.70% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 10.7 [2],[7]
Amortized Cost 0.1 [4],[5] 10.7 [2],[7]
Fair Value $ 0.1 [4],[5] $ 10.7 [2],[7]
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured revolving loan    
Coupon [3] 11.00%  
Spread [3] 4.75%  
Principal [4],[5] $ 3.9  
Amortized Cost [4],[5] 3.9  
Fair Value [4],[5] $ 3.8  
Investment, Identifier [Axis]: Lakers Buyer, Inc. and Lakers Parent LLC, Common units    
Shares   46,990
Amortized Cost [2]   $ 4.7
Fair Value [2]   $ 6.2
Investment, Identifier [Axis]: Lakers Buyer, Inc. and Lakers Parent LLC, First lien senior secured loan    
Coupon, PIK [1]   6.75%
Spread [1]   5.75%
Principal [2],[7]   $ 51.2
Amortized Cost [2],[7]   51.2
Fair Value [2],[7]   $ 51.2
Investment, Identifier [Axis]: Lakers Buyer, Inc. and Lakers Parent LLC, First lien senior secured revolving loan    
Coupon [1]   6.75%
Spread [1]   5.75%
Principal [2],[7]   $ 3.6
Amortized Cost [2],[7]   3.6
Fair Value [2],[7]   $ 3.6
Investment, Identifier [Axis]: Lakers Buyer, Inc. and Lakers Parent LLC, Second lien senior secured loan    
Coupon, PIK [1]   11.75%
Spread [1]   10.75%
Principal [2],[7]   $ 40.1
Amortized Cost [2],[7]   40.1
Fair Value [2],[7]   $ 40.1
Investment, Identifier [Axis]: LeanTaas Holdings, Inc., First lien senior secured loan    
Coupon [3] 11.05%  
Spread [3] 7.50%  
Principal [4],[5] $ 30.5  
Amortized Cost [4],[5] 30.5  
Fair Value [4],[5] $ 29.9  
Investment, Identifier [Axis]: Len the Plumber, LLC, LTP Neffsville, LLC, LTP of NJ, LLC, and LTP LSI, LLC, First lien senior secured loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 9.1
Amortized Cost [2],[7]   9.1
Fair Value [2],[7]   $ 9.0
Investment, Identifier [Axis]: Lew's Intermediate Holdings, LLC, First lien senior secured loan    
Coupon 7.90% [3] 5.75% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 1.0 [4],[5] $ 1.0 [2],[7]
Amortized Cost 1.0 [4],[5] 1.0 [2],[7]
Fair Value $ 0.9 [4],[5] $ 1.0 [2],[7]
Investment, Identifier [Axis]: Lew's Intermediate Holdings, LLC, First lien senior secured revolving loan    
Coupon 7.13% [3] 4.14% [1]
Spread 4.25% [3] 4.00% [1]
Principal $ 1.3 [5] $ 1.8 [2]
Amortized Cost 1.3 [5] 1.8 [2]
Fair Value $ 1.2 [5] $ 1.8 [2]
Investment, Identifier [Axis]: Lido Advisors, LLC, First lien senior secured revolving loan    
Coupon [3] 7.44%  
Spread [3] 4.50%  
Principal [4] $ 0.2  
Amortized Cost [4] 0.2  
Fair Value [4] $ 0.2  
Investment, Identifier [Axis]: Lifescan Global Corporation, First lien senior secured loan    
Coupon [3] 8.29%  
Spread [3] 6.00%  
Principal [5] $ 14.7  
Amortized Cost [5] 14.0  
Fair Value [5] $ 12.3  
Investment, Identifier [Axis]: Lifescan Global Corporation, Second lien senior secured loan    
Coupon [3] 11.79%  
Spread [3] 9.50%  
Principal [5] $ 0.2  
Amortized Cost [5] 0.2  
Fair Value [5] $ 0.2  
Investment, Identifier [Axis]: Lower ACS, Inc., First lien senior secured loan    
Coupon [3] 8.87%  
Spread [3] 5.75%  
Principal [4],[5] $ 5.4  
Amortized Cost [4],[5] 5.4  
Fair Value [4],[5] $ 5.4  
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., First lien senior secured loan    
Coupon 7.17% [3] 4.50% [1]
Spread 3.50% [3] 3.50% [1]
Principal $ 12.1 [4],[5] $ 11.7 [2],[7]
Amortized Cost 11.5 [4],[5] 11.0 [2],[7]
Fair Value $ 11.1 [4],[5] $ 10.9 [2],[7]
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., Second lien senior secured loan    
Coupon 12.67% [3] 10.00% [1]
Spread 9.00% [3] 9.00% [1]
Principal $ 68.4 [4],[5] $ 68.5 [2],[7]
Amortized Cost 68.4 [4],[5] 68.5 [2],[7]
Fair Value $ 65.7 [4],[5] $ 61.6 [2],[7]
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., Second lien senior secured loan 2    
Coupon 12.67% [3] 10.00% [1]
Spread 9.00% [3] 9.00% [1]
Principal $ 23.6 [4],[5] $ 23.6 [2],[7]
Amortized Cost 23.6 [4],[5] 23.6 [2],[7]
Fair Value $ 22.7 [4],[5] $ 21.3 [2],[7]
Investment, Identifier [Axis]: MCH Holdings, Inc., MC Acquisition Holdings I, LLC and Privia Health Group, Inc., Class A units    
Shares   1,438,643
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.6
Investment, Identifier [Axis]: MCH Holdings, Inc., MC Acquisition Holdings I, LLC and Privia Health Group, Inc., First lien senior secured loan    
Coupon [1]   8.50%
Spread [1]   7.00%
Principal [7]   $ 110.2
Amortized Cost [7]   110.2
Fair Value [7]   $ 110.2
Investment, Identifier [Axis]: ME Equity LLC, Common stock    
Shares 3,000,000 3,000,000
Amortized Cost $ 3.0 [5] $ 3.0 [2]
Fair Value $ 4.3 [5] $ 3.1 [2]
Investment, Identifier [Axis]: MMIT Holdings, LLC, First lien senior secured loan    
Coupon [1]   7.25%
Spread [1]   6.25%
Principal [2],[7]   $ 18.2
Amortized Cost [2],[7]   18.2
Fair Value [2],[7]   $ 18.0
Investment, Identifier [Axis]: MMIT Holdings, LLC, First lien senior secured loan 1    
Coupon [3] 9.92%  
Spread [3] 6.25%  
Principal [4],[5] $ 13.6  
Amortized Cost [4],[5] 13.6  
Fair Value [4],[5] $ 13.7  
Investment, Identifier [Axis]: MMIT Holdings, LLC, First lien senior secured loan 2    
Coupon 9.92% [3] 7.25% [1]
Spread 6.25% [3] 6.25% [1]
Principal $ 2.8 [4],[5] $ 13.7 [2],[7]
Amortized Cost 2.8 [4],[5] 13.7 [2],[7]
Fair Value $ 2.8 [4],[5] $ 13.6 [2],[7]
Investment, Identifier [Axis]: MMIT Holdings, LLC, First lien senior secured revolving loan    
Coupon 9.50% [3] 7.25% [1]
Spread 6.25% [3] 6.25% [1]
Principal $ 0.8 [4] $ 0.6 [2],[7]
Amortized Cost 0.8 [4] 0.6 [2],[7]
Fair Value $ 0.8 [4] $ 0.6 [2],[7]
Investment, Identifier [Axis]: MMax Investment Partners, Inc. (d/b/a Professional Fighters League) and PFL MMA, Inc., First lien senior secured loan    
Coupon, PIK [1]   10.00%
Principal [2]   $ 15.4
Amortized Cost [2]   14.0
Fair Value [2]   $ 13.9
Investment, Identifier [Axis]: MMax Investment Partners, Inc. (d/b/a Professional Fighters League) and PFL MMA, Inc., Warrant to purchase shares of common stock    
Shares   3,223,122
Amortized Cost [2]   $ 1.7
Fair Value [2]   $ 1.9
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [7]   $ 51.5
Amortized Cost [7]   51.5
Fair Value [7]   $ 51.5
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 1    
Coupon [3] 9.17%  
Spread [3] 5.50%  
Principal [4] $ 47.2  
Amortized Cost [4] 47.2  
Fair Value [4] $ 45.8  
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 2    
Coupon 9.17% [3] 6.50% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 15.4 [4],[5] $ 4.5 [2],[7]
Amortized Cost 15.4 [4],[5] 4.5 [2],[7]
Fair Value $ 14.9 [4],[5] $ 4.5 [2],[7]
Investment, Identifier [Axis]: Mac Lean-Fogg Company and MacLean-Fogg Holdings, L.L.C., First lien senior secured loan    
Coupon 7.87% [3] 5.88% [1]
Spread 4.75% [3] 5.25% [1]
Principal $ 84.9 [4],[5] $ 123.8 [7]
Amortized Cost 84.8 [4],[5] 123.5 [7]
Fair Value $ 84.9 [4],[5] $ 123.8 [7]
Investment, Identifier [Axis]: Mac Lean-Fogg Company and MacLean-Fogg Holdings, L.L.C., First lien senior secured loan 2    
Coupon [1]   5.88%
Spread [1]   5.25%
Principal [2],[7]   $ 19.1
Amortized Cost [2],[7]   19.1
Fair Value [2],[7]   $ 19.1
Investment, Identifier [Axis]: Mac Lean-Fogg Company and MacLean-Fogg Holdings, L.L.C., Preferred units    
Coupon 13.75% [3] 13.75% [1]
Coupon, PIK 9.25% [3] 9.25% [1]
Shares 59,453 59,453
Amortized Cost $ 77.1 [5] $ 75.0
Fair Value $ 77.1 [5] $ 75.0
Investment, Identifier [Axis]: Magnesium BorrowerCo, Inc. and Magnesium Co-Invest SCSp, First lien senior secured loan    
Coupon [3] 8.70%  
Spread [3] 5.75%  
Principal [4],[5],[6] $ 169.7  
Amortized Cost [4],[5],[6] 173.1  
Fair Value [4],[5],[6] $ 166.3  
Investment, Identifier [Axis]: Magnesium BorrowerCo, Inc. and Magnesium Co-Invest SCSp, Limited partnership interest    
Shares 3,974  
Amortized Cost [5],[6] $ 38.8  
Fair Value [5],[6] 40.4  
Investment, Identifier [Axis]: MailSouth, Inc., First lien senior secured loan    
Principal [5],[9] 8.8  
Amortized Cost [5],[9] 5.9  
Fair Value [5],[9] $ 4.5  
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P., Class A units    
Coupon, PIK 9.00% [3] 9.00% [1]
Shares 2,539 2,539
Amortized Cost $ 3.0 [5] $ 2.8 [2]
Fair Value $ 3.5 [5] $ 4.0 [2]
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P., Class B units    
Shares 570,625 570,625
Amortized Cost $ 0.0 $ 0.0 [2]
Fair Value $ 0.0 $ 0.0 [2]
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P., First lien senior secured loan    
Coupon 10.93% [3] 8.25% [1]
Spread 7.25% [3] 7.25% [1]
Principal $ 30.4 [4],[5] $ 42.2 [2],[7]
Amortized Cost 30.4 [4],[5] 42.2 [2],[7]
Fair Value $ 30.4 [4],[5] $ 42.2 [2],[7]
Investment, Identifier [Axis]: Management Consulting & Research LLC, First lien senior secured loan    
Coupon [3] 8.73%  
Spread [3] 6.00%  
Principal [4],[5] $ 1.0  
Amortized Cost [4],[5] 1.0  
Fair Value [4],[5] $ 1.0  
Investment, Identifier [Axis]: Manna Pro Products, LLC, First lien senior secured revolving loan    
Coupon 9.02% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 5.1 [4],[5] $ 1.9 [2],[7]
Amortized Cost 5.1 [4],[5] 1.9 [2],[7]
Fair Value $ 4.9 [4],[5] $ 1.9 [2],[7]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, Class A common units    
Shares 5,578 5,578
Amortized Cost $ 5.8 [5] $ 5.8 [2]
Fair Value $ 11.8 [5] $ 9.3 [2]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan    
Coupon 9.08% [3] 6.25% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 30.9 [4],[5] $ 18.7 [2],[7]
Amortized Cost 30.9 [4],[5] 18.7 [2],[7]
Fair Value $ 30.5 [4],[5] $ 18.5 [2],[7]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 2    
Coupon 9.14% [3] 6.25% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 7.4 [4],[5] $ 2.1 [7]
Amortized Cost 7.4 [4],[5] 2.1 [7]
Fair Value $ 7.3 [4],[5] $ 2.1 [7]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 3    
Coupon [1]   6.00%
Spread [1]   5.25%
Principal [7]   $ 6.6
Amortized Cost [7]   6.6
Fair Value [7]   $ 6.5
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan 4    
Coupon [1]   6.25%
Spread [1]   5.50%
Principal [2],[7]   $ 35.0
Amortized Cost [2],[7]   35.0
Fair Value [2],[7]   $ 34.6
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 34.4
Amortized Cost [2],[7]   34.4
Fair Value [2],[7]   $ 34.4
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 1    
Coupon [3] 9.55%  
Spread [3] 6.00%  
Principal [4],[5] $ 28.2  
Amortized Cost [4],[5] 28.2  
Fair Value [4],[5] $ 27.9  
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 2    
Coupon [3] 9.70%  
Spread [3] 6.00%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 3    
Coupon [3] 8.33%  
Spread [3] 5.75%  
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% [3] 8.00% [1]
Shares 1,929,237 1,929,237
Amortized Cost $ 2.2 [5] $ 2.1 [2]
Fair Value $ 2.5 [5] $ 2.4 [2]
Investment, Identifier [Axis]: Maverick Acquisition, Inc., First lien senior secured loan    
Coupon 9.92% [3] 7.00% [1]
Spread 6.25% [3] 6.00% [1]
Principal $ 27.7 [4],[5] $ 57.8 [2],[7]
Amortized Cost 27.7 [4],[5] 57.8 [2],[7]
Fair Value $ 25.7 [4],[5] $ 57.3 [2],[7]
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis HoldCo, Inc., and Metis TopCo, LP, Class A-1 units    
Shares   24,586
Amortized Cost [2]   $ 24.6
Fair Value [2]   $ 26.8
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis HoldCo, Inc., and Metis TopCo, LP, First lien senior secured revolving loan    
Coupon [1]   3.85%
Spread [1]   3.75%
Principal [2],[14]   $ 15.6
Amortized Cost [2],[14]   15.6
Fair Value [2],[14]   $ 15.3
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis HoldCo, Inc., and Metis TopCo, LP, Series A preferred stock    
Coupon, PIK [1]   7.00%
Shares   68,601
Amortized Cost [2]   $ 71.8
Fair Value [2]   $ 71.8
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP, Class A-1 units    
Shares 24,586  
Amortized Cost [5] $ 24.6  
Fair Value [5] 37.1  
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP, First lien senior secured revolving loan    
Amortized Cost [15] 0.0  
Fair Value [15] $ 0.0  
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP, Series A preferred stock    
Coupon, PIK [3] 7.00%  
Shares 68,601  
Amortized Cost [5] $ 75.6  
Fair Value [5] $ 75.6  
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan    
Coupon 9.43% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 84.5 [4],[5],[20] $ 84.5 [7],[21]
Amortized Cost 84.5 [4],[5],[20] 84.5 [7],[21]
Fair Value $ 83.7 [4],[5],[20] $ 84.5 [7],[21]
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan 2    
Coupon 9.43% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 5.5 [4],[5] $ 5.5 [7]
Amortized Cost 5.5 [4],[5] 5.5 [7]
Fair Value $ 5.4 [4],[5] $ 5.5 [7]
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan, First Out Tranche    
Coupon 2.00% 2.00%
Principal $ 40.9 $ 46.9
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured revolving loan    
Coupon [3] 8.79%  
Spread [3] 5.75%  
Principal [4],[5] $ 1.9  
Amortized Cost [4],[5] 1.9  
Fair Value [4],[5] $ 1.9  
Investment, Identifier [Axis]: McLaren Group Limited, Senior preference shares    
Coupon, PIK 12.50% [3] 12.50% [1]
Shares 200,000 200,000
Amortized Cost $ 23.7 [5],[6] $ 20.7 [2],[8]
Fair Value $ 25.0 [5],[6] $ 27.1 [2],[8]
Investment, Identifier [Axis]: McLaren Group Limited, Warrant to purchase ordinary shares    
Shares   49,181
Amortized Cost [2],[8]   $ 5.5
Fair Value [2],[8]   $ 5.1
Investment, Identifier [Axis]: McLaren Group Limited, Warrant to purchase ordinary shares 2    
Shares   13,776
Amortized Cost [2],[8]   $ 1.6
Fair Value [2],[8]   $ 1.4
Investment, Identifier [Axis]: McLaren Group Limited, Warrant to purchase up to 13,776 ordinary shares    
Shares 13,776  
Amortized Cost [5],[6] $ 1.6  
Fair Value [5],[6] $ 0.9  
Investment, Identifier [Axis]: McLaren Group Limited, Warrant to purchase up to 49,181 ordinary shares    
Shares 49,181  
Amortized Cost [5],[6] $ 5.5  
Fair Value [5],[6] 3.4  
Investment, Identifier [Axis]: Medline Borrower, LP, First lien senior secured revolving loan    
Amortized Cost 0.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: Miami Beckham United LLC, Class A preferred units    
Coupon, PIK 8.50% [3] 8.50% [1]
Shares 85,000 85,000
Amortized Cost $ 92.7 $ 87.1
Fair Value $ 92.7 $ 87.1
Investment, Identifier [Axis]: Micromeritics Instrument Corp., First lien senior secured loan    
Coupon 7.38% [3] 6.00% [1]
Spread 4.50% [3] 5.00% [1]
Principal $ 24.0 [4],[5] $ 32.0 [7]
Amortized Cost 24.0 [4],[5] 32.0 [7]
Fair Value 24.0 [4],[5] $ 32.0 [7]
Investment, Identifier [Axis]: Micromeritics Instrument Corp., First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: Microstar Logistics LLC, Microstar Global Asset Management LLC, MStar Holding Corporation and Kegstar USA Inc., Common stock    
Shares 54,710 54,710
Amortized Cost $ 4.9 [5] $ 4.9 [2]
Fair Value $ 6.1 [5] $ 4.5 [2]
Investment, Identifier [Axis]: Microstar Logistics LLC, Microstar Global Asset Management LLC, MStar Holding Corporation and Kegstar USA Inc., Second lien senior secured loan    
Coupon, PIK 12.67% [3] 10.00% [1]
Spread 9.00% [3] 9.00% [1]
Principal $ 153.5 [4] $ 153.5 [7]
Amortized Cost 153.5 [4] 153.5 [7]
Fair Value $ 153.5 [4] $ 150.4 [7]
Investment, Identifier [Axis]: Microstar Logistics LLC, Microstar Global Asset Management LLC, MStar Holding Corporation and Kegstar USA Inc., Series A preferred stock    
Shares 1,507 1,507
Amortized Cost $ 1.5 [5] $ 1.5 [2]
Fair Value $ 2.6 [5] $ 2.0 [2]
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., First lien senior secured loan    
Coupon 9.17% [3] 6.25% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 32.6 [4],[5] $ 72.7 [2],[7]
Amortized Cost 32.6 [4],[5] 72.7 [2],[7]
Fair Value 31.6 [4],[5] $ 72.0 [2],[7]
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., First lien senior secured revolving loan    
Amortized Cost [15] 0.0  
Fair Value [15] $ 0.0  
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., Limited partner interests    
Shares 9,574,000 9,574,000
Amortized Cost [5] $ 9.6  
Fair Value $ 9.1 [5] $ 9.6 [2]
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Class A units    
Shares   500,000
Amortized Cost [2]   $ 5.0
Fair Value [2]   $ 7.2
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), First lien senior secured loan    
Coupon [1]   5.00%
Spread [1]   4.00%
Principal [7]   $ 9.2
Amortized Cost [7]   9.2
Fair Value [7]   $ 9.2
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), First lien senior secured loan 2    
Coupon [1]   5.00%
Spread [1]   4.00%
Principal [7]   $ 4.7
Amortized Cost [7]   4.7
Fair Value [7]   $ 4.7
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), First lien senior secured revolving loan    
Coupon [1]   7.25%
Spread [1]   4.00%
Principal [7]   $ 5.0
Amortized Cost [7]   5.0
Fair Value [7]   $ 5.0
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Second lien senior secured loan    
Coupon [1]   10.25%
Spread [1]   9.25%
Principal [7]   $ 106.6
Amortized Cost [7]   106.4
Fair Value [7]   $ 106.6
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Second lien senior secured loan 2    
Coupon [1]   10.25%
Spread [1]   9.25%
Principal [2],[7]   $ 13.9
Amortized Cost [2],[7]   13.9
Fair Value [2],[7]   $ 13.9
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Second lien senior secured loan 3    
Coupon [1]   10.25%
Spread [1]   9.25%
Principal [2],[7]   $ 17.9
Amortized Cost [2],[7]   17.9
Fair Value [2],[7]   $ 17.9
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Second lien senior secured loan 4    
Coupon [1]   9.00%
Spread [1]   8.00%
Principal [2],[7]   $ 48.9
Amortized Cost [2],[7]   48.9
Fair Value [2],[7]   48.9
Investment, Identifier [Axis]: Ministry Brangds Holdings, LLC and RCP MB Investments B, L.P., Limited partner interests    
Amortized Cost [2]   $ 9.6
Investment, Identifier [Axis]: Mitchell International, Inc., Second lien senior secured loan    
Coupon 9.57% [3] 7.00% [1]
Spread 6.50% [3] 6.50% [1]
Principal $ 91.2 [4],[5],[11] $ 91.2 [2],[7],[12]
Amortized Cost 90.4 [4],[5],[11] 90.3 [2],[7],[12]
Fair Value $ 85.2 [4],[5],[11] $ 91.6 [2],[7],[12]
Investment, Identifier [Axis]: Monica Holdco (US) Inc., First lien senior secured loan    
Coupon 9.92% [3] 7.25% [1]
Spread 6.25% [3] 6.25% [1]
Principal $ 2.6 [4],[5] $ 2.6 [2],[7]
Amortized Cost 2.6 [4],[5] 2.6 [2],[7]
Fair Value 2.6 [4],[5] $ 2.6 [2],[7]
Investment, Identifier [Axis]: Monica Holdco (US) Inc., First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: Monolith Brands Group, Inc., Series A-1 preferred stock    
Shares 701,255  
Amortized Cost [5] $ 15.5  
Fair Value [5] $ 15.5  
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, First lien senior secured loan    
Coupon 8.87% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 77.4 [4],[5] $ 79.0 [7]
Amortized Cost 77.4 [4],[5] 79.0 [7]
Fair Value $ 77.4 [4],[5] $ 78.2 [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    
Shares 21,939,151 96,939,152
Amortized Cost $ 21.1 $ 96.9
Fair Value $ 24.0 $ 96.9
Investment, Identifier [Axis]: Moonraker AcquisitionCo LLC and Moonraker HoldCo LLC, Class A units    
Coupon, PIK [3] 8.00%  
Shares 45,320  
Amortized Cost $ 4.5  
Fair Value $ 4.5  
Investment, Identifier [Axis]: Moonraker AcquisitionCo LLC and Moonraker HoldCo LLC, First lien senior secured loan    
Coupon [3] 9.03%  
Spread [3] 6.00%  
Principal [4],[5] $ 26.7  
Amortized Cost [4],[5] 26.7  
Fair Value [4],[5] $ 26.2  
Investment, Identifier [Axis]: Movati Athletic (Group) Inc., First lien senior secured loan    
Coupon 8.76% [3] 7.45% [1]
Coupon, PIK 0.50% [3] 0.50% [1]
Spread 6.00% [3] 4.20% [1]
Principal $ 4.6 [4],[5],[6] $ 0.2 [2],[7],[8]
Amortized Cost 5.0 [4],[5],[6] 0.2 [2],[7],[8]
Fair Value $ 4.5 [4],[5],[6] $ 0.2 [2],[7],[8]
Investment, Identifier [Axis]: Movati Athletic (Group) Inc., First lien senior secured loan 2    
Coupon [1]   7.50%
Coupon, PIK [1]   0.50%
Spread [1]   6.00%
Principal [2],[7],[8]   $ 2.9
Amortized Cost [2],[7],[8]   3.0
Fair Value [2],[7],[8]   $ 2.7
Investment, Identifier [Axis]: Movati Athletic (Group) Inc., First lien senior secured loan 3    
Coupon [1]   7.50%
Coupon, PIK [1]   0.50%
Spread [1]   6.00%
Principal [7],[8]   $ 2.3
Amortized Cost [7],[8]   2.2
Fair Value [7],[8]   $ 2.1
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC, First lien senior secured loan    
Coupon 12.20% [3] 11.00% [1]
Spread 8.50% [3] 9.00% [1]
Principal $ 75.5 [4],[5] $ 2.7 [2],[7]
Amortized Cost 75.5 [4],[5] 2.7 [2],[7]
Fair Value $ 75.5 [4],[5] $ 2.7 [2],[7]
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC, First lien senior secured loan 2    
Coupon [1]   10.00%
Spread [1]   8.00%
Principal [2],[7]   $ 38.3
Amortized Cost [2],[7]   38.3
Fair Value [2],[7]   $ 38.3
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC, Preferred units    
Coupon [1]   8.00%
Coupon, PIK [3] 8.00%  
Shares 41,000 21,667
Amortized Cost $ 41.0 $ 24.9
Fair Value $ 45.1 $ 27.4
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan    
Coupon [1]   7.50%
Spread [1]   6.50%
Principal [2],[7]   $ 2.4
Amortized Cost [2],[7]   2.4
Fair Value [2],[7]   $ 2.4
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 1    
Coupon [3] 10.20%  
Spread [3] 6.50%  
Principal [4],[5] $ 6.3  
Amortized Cost [4],[5] 6.3  
Fair Value [4],[5] $ 6.3  
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 2    
Coupon 10.20% [3] 7.00% [1]
Spread 6.50% [3] 6.00% [1]
Principal $ 2.3 [4],[5] $ 6.4 [2],[7]
Amortized Cost 2.3 [4],[5] 6.4 [2],[7]
Fair Value $ 2.3 [4],[5] $ 6.4 [2],[7]
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 3    
Coupon [3] 10.20%  
Spread [3] 6.50%  
Principal [4],[5] $ 1.3  
Amortized Cost [4],[5] 1.3  
Fair Value [4],[5] $ 1.3  
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured revolving loan    
Coupon 9.53% [3] 8.75% [1]
Spread 6.50% [3] 5.50% [1]
Principal $ 0.6 [4],[5] $ 0.6 [2],[7]
Amortized Cost 0.6 [4],[5] 0.6 [2],[7]
Fair Value $ 0.6 [4],[5] $ 0.6 [2],[7]
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, Class A-2 common units    
Shares 12,296,000 12,296,000
Amortized Cost $ 12.9 [5] $ 12.9 [2]
Fair Value $ 17.5 [5] $ 18.5 [2]
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, First lien senior secured loan    
Coupon 9.12% [3] 6.75% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 147.2 [4],[5] $ 12.1 [2],[7]
Amortized Cost 147.2 [4],[5] 12.1 [2],[7]
Fair Value $ 145.8 [4],[5] $ 12.0 [2],[7]
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, First lien senior secured loan 2    
Coupon 9.12% [3] 6.75% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 0.2 [4],[5] $ 176.4 [2],[7]
Amortized Cost 0.2 [4],[5] 176.4 [2],[7]
Fair Value $ 0.2 [4],[5] 174.7 [2],[7]
Investment, Identifier [Axis]: NECCO Holdings, Inc. and New England Confectionery Company, Inc.    
Fair Value   0.0
Investment, Identifier [Axis]: NECCO Realty Investments LLC    
Fair Value   $ 0.0
Investment, Identifier [Axis]: NM GRC Holdco, LLC, First lien senior secured loan    
Coupon [1]   8.50%
Coupon, PIK [1]   1.50%
Spread [1]   7.50%
Principal [7]   $ 45.4
Amortized Cost [7]   45.2
Fair Value [7]   $ 45.4
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured loan    
Coupon 7.81% [3] 6.00% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 32.0 [4],[5] $ 24.2 [7]
Amortized Cost 32.0 [4],[5] 24.2 [7]
Fair Value $ 31.1 [4],[5] $ 23.9 [7]
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured loan 2    
Coupon 7.07% [3] 6.00% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 4.7 [4],[5] $ 8.1 [7]
Amortized Cost 4.7 [4],[5] 8.1 [7]
Fair Value $ 4.6 [4],[5] $ 8.1 [7]
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured revolving loan    
Coupon [1]   6.00%
Spread [1]   5.00%
Principal [2],[7]   $ 6.2
Amortized Cost [2],[7]   6.2
Fair Value [2],[7]   $ 6.1
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, First lien senior secured revolving loan    
Coupon 9.00% [3] 0.00% [1]
Spread [3] 2.75%  
Principal [5],[13] $ 2.0  
Amortized Cost 2.0 [5],[13] $ 0.0 [16]
Fair Value $ 1.9 [5],[13] $ 0.0 [16]
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, Partnership units    
Shares 30,000 30,000
Amortized Cost $ 3.0 [5] $ 3.0 [2]
Fair Value $ 2.5 [5] $ 2.8 [2]
Investment, Identifier [Axis]: NSM Insurance Group, LLC, First lien senior secured loan    
Coupon [1]   6.00%
Spread [1]   4.75%
Principal [7]   $ 12.8
Amortized Cost [7]   12.8
Fair Value [7]   $ 12.8
Investment, Identifier [Axis]: NSM Insurance Group, LLC, First lien senior secured revolving loan    
Coupon [1]   7.00%
Spread [1]   3.75%
Principal [2],[7],[14]   $ 0.5
Amortized Cost [2],[7],[14]   0.5
Fair Value [2],[7],[14]   $ 0.5
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Class A units    
Shares 25,277 25,277
Amortized Cost $ 2.5 [5] $ 2.5 [2]
Fair Value $ 4.4 [5] $ 4.1 [2]
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Preferred units    
Coupon, PIK 15.00% [3] 15.00% [1]
Shares 1,842 1,842
Amortized Cost $ 0.2 [5] $ 0.1 [2]
Fair Value $ 0.2 [5] $ 0.1 [2]
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Second lien senior secured loan    
Coupon [1]   11.00%
Spread [1]   10.00%
Principal [2],[7]   $ 72.8
Amortized Cost [2],[7]   72.8
Fair Value [2],[7]   $ 72.8
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Senior preferred units    
Coupon, PIK 8.00% [3] 8.00% [1]
Shares 5,320 5,320
Amortized Cost $ 0.3 [5] $ 0.3 [2]
Fair Value $ 0.3 [5] 0.3 [2]
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Common stock    
Shares 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 151,056  
Amortized Cost [5] $ 98.1  
Fair Value [5] $ 40.9  
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Series B preferred stock    
Shares 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 1,401,385  
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    
Shares 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 1,994,644  
Amortized Cost $ 0.5  
Fair Value $ 0.0  
Investment, Identifier [Axis]: National Spine and Pain Centers, LLC, First lien senior secured loan    
Coupon [3] 7.31%  
Spread [3] 4.50%  
Principal [4],[5] $ 0.0  
Amortized Cost [4],[5] 0.0  
Fair Value [4],[5] 0.0  
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC    
Fair Value $ 0.0 $ 143.7
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, Class A units    
Shares   550
Amortized Cost   $ 0.0
Fair Value   $ 11.8
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, First lien senior secured loan    
Coupon, PIK [1]   8.00%
Principal [2]   $ 54.4
Amortized Cost [2]   54.4
Fair Value [2]   $ 54.4
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, First lien senior secured loan 2    
Coupon, PIK [1]   9.00%
Principal [2]   $ 15.2
Amortized Cost [2]   15.2
Fair Value [2]   $ 15.2
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, First lien senior secured loan 3    
Coupon [1]   8.00%
Coupon, PIK [1]   3.00%
Principal [2]   $ 46.5
Amortized Cost [2]   46.5
Fair Value [2]   $ 46.5
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, Series A preferred units    
Coupon, PIK [1]   10.50%
Shares   1,000
Amortized Cost   $ 14.7
Fair Value   $ 15.8
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., Class A preferred units    
Shares 6,762,668  
Amortized Cost [5],[6] $ 6.8  
Fair Value [5],[6] $ 7.6  
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   6,762,668
Amortized Cost [2],[8]   $ 6.8
Fair Value [2],[8]   $ 7.1
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    
Coupon 4.50% [3] 5.25% [1]
Spread 4.50% [3] 4.25% [1]
Principal $ 4.4 [5],[6] $ 15.0 [7],[8]
Amortized Cost 5.1 [5],[6] 15.0 [7],[8]
Fair Value $ 4.3 [5],[6] $ 15.0 [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 7.37% [3] 4.50% [1]
Spread 4.25% [3] 4.50% [1]
Principal $ 14.9 [4],[5],[6] $ 5.2 [2],[8]
Amortized Cost 14.9 [4],[5],[6] 5.1 [2],[8]
Fair Value $ 14.6 [4],[5],[6] $ 5.2 [2],[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 4.50% [3] 4.50% [1]
Spread 4.50% [3] 4.50% [1]
Principal $ 1.4 [5],[6] $ 24.4 [2],[8]
Amortized Cost 1.6 [5],[6] 24.0 [2],[8]
Fair Value $ 1.4 [5],[6] $ 24.4 [2],[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 7.33% [3] 5.25% [1]
Spread 4.25% [3] 4.25% [1]
Principal $ 0.1 [4],[5],[6] $ 0.2 [2],[7],[8]
Amortized Cost 0.1 [4],[5],[6] 0.2 [2],[7],[8]
Fair Value $ 0.1 [4],[5],[6] $ 0.2 [2],[7],[8]
Investment, Identifier [Axis]: Nest Topco Borrower Inc., KKR Nest Co-Invest L.P., and NBLY 2021-1, Limited partner interest    
Shares 9,725,000 9,725,000
Amortized Cost $ 9.7 [5] $ 9.7 [2]
Fair Value $ 9.5 [5] $ 9.7 [2]
Investment, Identifier [Axis]: Nest Topco Borrower Inc., KKR Nest Co-Invest L.P., and NBLY 2021-1, Senior subordinated loan    
Coupon 11.58% [3] 9.00% [1]
Spread 8.50% [3] 8.50% [1]
Principal $ 119.1 [4],[5] $ 119.1 [2],[7]
Amortized Cost 119.1 [4],[5] 119.1 [2],[7]
Fair Value $ 117.9 [4],[5] $ 117.9 [2],[7]
Investment, Identifier [Axis]: New Era Cap, LLC, First lien senior secured loan    
Coupon [3] 8.46%  
Spread [3] 6.00%  
Principal [4],[5] $ 28.1  
Amortized Cost [4],[5] 28.1  
Fair Value [4],[5] $ 28.1  
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, Common units    
Shares 884,916 884,916
Amortized Cost $ 0.9 [5] $ 0.9 [2]
Fair Value $ 2.7 [5] $ 1.2 [2]
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [7]   $ 20.1
Amortized Cost [7]   20.1
Fair Value [7]   $ 20.1
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan 1    
Coupon [3] 9.45%  
Spread [3] 5.75%  
Principal [4],[5] $ 20.0  
Amortized Cost [4],[5] 20.0  
Fair Value [4],[5] $ 20.0  
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan 2    
Coupon [3] 8.91%  
Spread [3] 5.75%  
Principal [4],[5] $ 2.9  
Amortized Cost [4],[5] 2.9  
Fair Value [4],[5] $ 2.9  
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% [3] 8.00% [1]
Shares 13,528 13,528
Amortized Cost $ 15.9 [5] $ 14.9 [2]
Fair Value $ 35.9 [5] $ 32.8 [2]
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan    
Coupon 9.11% [3] 6.50% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 47.7 [4],[5] $ 48.0 [7]
Amortized Cost 47.7 [4],[5] 48.0 [7]
Fair Value $ 47.7 [4],[5] $ 48.0 [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 9.11% [3] 6.50% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 2.5 [4],[5] $ 2.6 [7]
Amortized Cost 2.5 [4],[5] 2.6 [7]
Fair Value $ 2.5 [4],[5] $ 2.6 [7]
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan 3    
Coupon 9.11% [3] 6.50% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 0.1 [2],[7]
Amortized Cost 0.1 [4],[5] 0.1 [2],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [2],[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 [3] 9.11%  
Spread [3] 5.75%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, Class A units    
Shares 50,000 50,000
Amortized Cost $ 5.0 $ 5.0
Fair Value $ 3.0 $ 4.1
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, First lien senior secured loan    
Coupon 8.01% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 21.7 [4],[5] $ 22.3 [2],[7]
Amortized Cost 21.7 [4],[5] 22.3 [2],[7]
Fair Value $ 20.9 [4],[5] $ 22.1 [2],[7]
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC, First lien senior secured loan 2    
Coupon [3] 8.67%  
Spread [3] 6.50%  
Principal [4],[5] $ 3.6  
Amortized Cost [4],[5] 3.6  
Fair Value [4],[5] $ 3.5  
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured loan    
Coupon 8.63% [3] 6.50% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 4.8 [4],[5] $ 11.1 [2],[7]
Amortized Cost 4.7 [4],[5] 10.8 [2],[7]
Fair Value $ 4.6 [4],[5] $ 11.0 [2],[7]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured loan 2    
Coupon [3] 8.63%  
Spread [3] 5.50%  
Principal [4],[5] $ 1.7  
Amortized Cost [4],[5] 1.7  
Fair Value [4],[5] $ 1.7  
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured revolving loan    
Coupon [3] 7.96%  
Spread [3] 5.50%  
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 revolving loan 2    
Coupon [3] 10.75%  
Spread [3] 4.50%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., Class A preferred units    
Coupon, PIK 10.00% [3] 10.00% [1]
Shares 4,772 4,772
Amortized Cost $ 5.2 [5] $ 5.2 [2]
Fair Value $ 9.9 [5] $ 6.3 [2]
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., Class C units    
Shares 4,772 4,772
Amortized Cost $ 0.0 $ 0.0 [2]
Fair Value $ 0.0 $ 0.0 [2]
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., First lien senior secured loan    
Coupon 8.37% [3] 6.75% [1]
Spread 5.25% [3] 5.75% [1]
Principal $ 23.5 [4],[5] $ 23.9 [7]
Amortized Cost 23.5 [4],[5] 23.9 [7]
Fair Value $ 23.5 [4],[5] $ 23.9 [7]
Investment, Identifier [Axis]: NueHealth Performance, LLC, First lien senior secured loan    
Coupon [1]   8.25%
Spread [1]   7.25%
Principal [7]   $ 12.4
Amortized Cost [7]   12.4
Fair Value [7]   $ 12.4
Investment, Identifier [Axis]: NueHealth Performance, LLC, First lien senior secured loan 2    
Coupon [1]   8.25%
Spread [1]   7.25%
Principal [2],[7]   $ 3.0
Amortized Cost [2],[7]   3.0
Fair Value [2],[7]   $ 3.0
Investment, Identifier [Axis]: NueHealth Performance, LLC, First lien senior secured revolving loan    
Coupon [1]   8.25%
Spread [1]   7.25%
Principal [2],[7]   $ 3.3
Amortized Cost [2],[7]   3.3
Fair Value [2],[7]   $ 3.3
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan    
Coupon 10.02% [3] 6.50% [1]
Spread 5.25% [3] 5.50% [1]
Principal $ 25.9 [4],[5] $ 26.1 [7]
Amortized Cost 25.9 [4],[5] 26.1 [7]
Fair Value $ 25.9 [4],[5] $ 26.1 [7]
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 2    
Coupon 10.02% [3] 6.50% [1]
Spread 5.25% [3] 5.50% [1]
Principal $ 15.3 [4],[5] $ 15.4 [7]
Amortized Cost 15.3 [4],[5] 15.4 [7]
Fair Value $ 15.3 [4],[5] $ 15.4 [7]
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 3    
Coupon [3] 9.42%  
Spread [3] 5.25%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: OTG Management, LLC, Class A preferred units    
Shares 3,000,000 3,000,000
Amortized Cost $ 25.3 [5] $ 25.3
Fair Value $ 13.1 [5] $ 15.8
Investment, Identifier [Axis]: OTG Management, LLC, Common units    
Shares 3,000,000 3,000,000
Amortized Cost $ 3.0 $ 3.0
Fair Value $ 0.0 $ 0.0
Investment, Identifier [Axis]: OTG Management, LLC, Warrant to purchase common units    
Shares (as a percent)   7.73%
Amortized Cost   $ 0.1
Fair Value   $ 0.0
Investment, Identifier [Axis]: OTG Management, LLC, Warrant to purchase up to 7.73% of common units    
Shares (as a percent) 7.73%  
Amortized Cost $ 0.1  
Fair Value $ 0.0  
Investment, Identifier [Axis]: OUTFRONT Media Inc., Series A convertible perpetual preferred stock    
Coupon 7.00% [3] 7.00% [1]
Shares 25,000 25,000
Amortized Cost $ 25.1 [5],[6] $ 25.0 [2],[8]
Fair Value $ 32.6 [5],[6] $ 44.4 [2],[8]
Investment, Identifier [Axis]: Offen, Inc., First lien senior secured loan    
Coupon [3] 8.50%  
Spread [3] 5.00%  
Principal [5] $ 1.4  
Amortized Cost [5] 1.5  
Fair Value [5] 1.4  
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., Class A common units    
Shares   9,549,000
Amortized Cost [2]   $ 9.5
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., First lien senior secured loan    
Coupon [1]   8.50%
Coupon, PIK [1]   2.00%
Spread [1]   7.50%
Principal [7]   $ 42.1
Amortized Cost [7]   42.1
Fair Value [7]   $ 34.5
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., First lien senior secured loan 2    
Coupon [1]   8.50%
Coupon, PIK [1]   2.00%
Spread [1]   7.50%
Principal [7]   $ 0.9
Amortized Cost [7]   0.9
Fair Value [7]   $ 0.8
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., First lien senior secured revolving loan    
Coupon [1]   8.50%
Coupon, PIK [1]   2.00%
Spread [1]   7.50%
Principal [2],[7]   $ 10.1
Amortized Cost [2],[7]   10.1
Fair Value [2],[7]   $ 8.3
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., First lien senior secured revolving loan 2    
Coupon [1]   8.50%
Coupon, PIK [1]   2.00%
Spread [1]   7.50%
Principal [2],[7]   $ 0.2
Amortized Cost [2],[7]   0.2
Fair Value [2],[7]   $ 0.2
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., Preferred units    
Coupon, PIK [1]   15.00%
Shares   417,189
Amortized Cost [2]   $ 0.3
Fair Value [2]   $ 0.3
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P. and Asclepius Hodlings LLC    
Fair Value $ 48.6  
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Class A common units    
Shares 9,549,000  
Amortized Cost $ 9.5  
Fair Value $ 0.0  
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Common units    
Shares 7,584  
Amortized Cost $ 0.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan    
Coupon, PIK [3] 12.13%  
Spread [3] 9.00%  
Principal [4] $ 49.3  
Amortized Cost [4] 49.3  
Fair Value [4] $ 45.3  
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan 2    
Coupon, PIK [3] 12.13%  
Spread [3] 9.00%  
Principal [4],[5] $ 3.5  
Amortized Cost [4],[5] 3.5  
Fair Value [4],[5] $ 3.3  
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Preferred stock    
Shares 7,983  
Amortized Cost $ 3.1  
Fair Value $ 0.0  
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Preferred units    
Shares 417,189  
Amortized Cost $ 0.3  
Fair Value 0.0  
Investment, Identifier [Axis]: OneDigital Borrower LLC, First lien senior secured revolving loan    
Amortized Cost [15] 0.0  
Fair Value [15] $ 0.0  
Investment, Identifier [Axis]: OneDigital Holdings, Achilles Holdco, First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost [16]   $ 0.0
Fair Value [16]   $ 0.0
Investment, Identifier [Axis]: Opal Fuels LLC and Opal Fuels Inc., Class A common stock    
Shares 3,059,533  
Amortized Cost [6],[11] $ 23.3  
Fair Value [6],[11] $ 25.3  
Investment, Identifier [Axis]: Opal Fuels LLC and Opal Fuels Inc., Senior subordinated loan    
Coupon, PIK [3] 8.00%  
Principal [6] $ 28.0  
Amortized Cost [6] 24.0  
Fair Value [6] $ 28.0  
Investment, Identifier [Axis]: Opal Fuels LLC, Senior subordinated loan    
Coupon, PIK [1]   8.00%
Principal   $ 52.7
Amortized Cost   43.8
Fair Value   $ 47.8
Investment, Identifier [Axis]: OpenMarket Inc., First lien senior secured loan    
Coupon 9.92% [3] 7.00% [1]
Spread 6.25% [3] 6.25% [1]
Principal $ 51.7 [4],[5],[6] $ 50.7 [2],[7],[8]
Amortized Cost 51.7 [4],[5],[6] 50.7 [2],[7],[8]
Fair Value $ 51.2 [4],[5],[6] $ 50.1 [2],[7],[8]
Investment, Identifier [Axis]: Osmose Utilities Services, Inc. and Pine Intermediate Holding LLC, Second lien senior secured loan    
Coupon 9.87% [3] 7.25% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 55.3 [4],[5] $ 55.3 [2],[7]
Amortized Cost 55.3 [4],[5] 55.3 [2],[7]
Fair Value 51.9 [4],[5] 54.7 [2],[7]
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment II, L.P.    
Fair Value $ 15.3 $ 11.1
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment II, L.P., Limited partnership interest    
Shares (as a percent) 100.00% 100.00%
Amortized Cost $ 7.1 [5],[6] $ 7.0 [2],[8],[19]
Fair Value 15.3 [5],[6] 11.1 [2],[8],[19]
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment, L.P.    
Fair Value $ 0.7 $ 1.3
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],[19]
Fair Value $ 0.7 [6] 1.3 [8],[19]
Investment, Identifier [Axis]: PDDS Holdco, Inc., First lien senior secured loan    
Coupon [3] 9.89%  
Spread [3] 6.75%  
Principal [4],[5] $ 9.0  
Amortized Cost [4],[5] 9.0  
Fair Value [4],[5] $ 8.8  
Investment, Identifier [Axis]: PDI TA Hholdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 2    
Principal [2],[7]   $ 70.1
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Class A units    
Shares 2,062,493 2,062,493
Amortized Cost $ 2.1 [5] $ 2.1 [2]
Fair Value $ 2.8 [5] $ 2.9 [2]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, First lien senior secured loan    
Coupon 7.16% [3] 5.50% [1]
Spread 4.50% [3] 4.50% [1]
Principal $ 53.1 [4],[5] $ 53.5 [7]
Amortized Cost 53.1 [4],[5] 53.5 [7]
Fair Value $ 52.0 [4],[5] $ 53.5 [7]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, First lien senior secured revolving loan    
Coupon [3] 7.21%  
Spread [3] 4.50%  
Principal [4],[5] $ 4.7  
Amortized Cost [4],[5] 4.7  
Fair Value [4],[5] $ 4.6  
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan    
Coupon [1]   9.50%
Spread [1]   8.50%
Principal [2],[7]   $ 7.2
Amortized Cost [2],[7]   7.2
Fair Value [2],[7]   $ 7.2
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 1    
Coupon [3] 11.49%  
Spread [3] 8.50%  
Principal [4],[5] $ 70.2  
Amortized Cost [4],[5] 70.2  
Fair Value [4],[5] $ 69.5  
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 2    
Coupon 11.49% [3] 9.50% [1]
Spread 8.50% [3] 8.50% [1]
Principal [4],[5] $ 8.7  
Amortized Cost 8.7 [4],[5] $ 70.1 [2],[7]
Fair Value $ 8.7 [4],[5] $ 70.1 [2],[7]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 3    
Coupon 11.49% [3] 9.50% [1]
Spread 8.50% [3] 8.50% [1]
Principal $ 8.3 [4],[5] $ 8.3 [2],[7]
Amortized Cost 8.3 [4],[5] 8.3 [2],[7]
Fair Value $ 8.2 [4],[5] $ 8.3 [2],[7]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan 4    
Coupon 11.49% [3] 9.50% [1]
Spread 8.50% [3] 8.50% [1]
Principal $ 7.2 [4],[5] $ 8.7 [2],[7]
Amortized Cost 7.2 [4],[5] 8.7 [2],[7]
Fair Value $ 7.1 [4],[5] $ 8.7 [2],[7]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Series A preferred stock    
Coupon, PIK 13.25% [3] 13.25% [1]
Shares 13,656 13,656
Amortized Cost $ 21.5 [5] $ 19.5 [2]
Fair Value $ 21.1 [5] $ 19.7 [2]
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC (fka QC Supply, LLC), Common unit    
Shares   279,200
Amortized Cost [2]   $ 7.4
Fair Value [2]   $ 7.4
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC (fka QC Supply, LLC), First lien senior secured loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 14.9
Amortized Cost [2],[7]   14.9
Fair Value [2],[7]   $ 14.9
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC (fka QC Supply, LLC), First lien senior secured revolving loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 2.8
Amortized Cost [2],[7]   2.8
Fair Value [2],[7]   2.8
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC, Common unit    
Shares 279,199  
Amortized Cost [5] $ 7.5  
Fair Value [5] $ 6.2  
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC, First lien senior secured loan    
Coupon [3] 9.67%  
Spread [3] 6.00%  
Principal [4],[5] $ 14.9  
Amortized Cost [4],[5] 14.9  
Fair Value [4],[5] $ 14.9  
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC, First lien senior secured revolving loan    
Coupon [3] 9.67%  
Spread [3] 6.00%  
Principal [4],[5] $ 4.3  
Amortized Cost [4],[5] 4.3  
Fair Value [4],[5] 4.3  
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC    
Fair Value $ 25.4 $ 25.1
Investment, Identifier [Axis]: Padres L.P., First lien senior secured loan    
Coupon 8.06% [3] 6.00% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 92.8 [4],[5] $ 92.8 [2],[7]
Amortized Cost 92.8 [4],[5] 92.8 [2],[7]
Fair Value $ 92.8 [4],[5] 92.8 [2],[7]
Investment, Identifier [Axis]: Panda Temple Power, LLC and T1 Power Holdings LLC    
Fair Value   $ 0.0
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 [8],[12]
Fair Value $ 3.9 [5],[6],[11] $ 3.6 [8],[12]
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC, Class R common units    
Shares 6,004,768 6,004,768
Amortized Cost $ 6.0 [5] $ 6.0 [2]
Fair Value 6.5 [5] $ 7.9 [2]
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC, First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC, Second lien senior secured loan    
Coupon 10.87% [3] 8.75% [1]
Spread 7.75% [3] 7.75% [1]
Principal $ 76.3 [4],[5] $ 76.3 [2],[7]
Amortized Cost 76.3 [4],[5] 76.3 [2],[7]
Fair Value $ 72.5 [4],[5] $ 76.3 [2],[7]
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan    
Coupon 8.65% [3] 6.25% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 13.7 [4],[5] $ 11.6 [2],[7]
Amortized Cost 13.5 [4],[5] 11.4 [2],[7]
Fair Value $ 13.3 [4],[5] $ 11.5 [2],[7]
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan 2    
Coupon [3] 9.31%  
Spread [3] 5.50%  
Principal [4] $ 0.9  
Amortized Cost [4] 0.9  
Fair Value [4] $ 0.9  
Investment, Identifier [Axis]: PayNearMe, Inc., Warrant to purchase shares of Series E preferred stock    
Shares   195,726
Amortized Cost [2]   $ 0.2
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: PayNearMe, Inc., Warrant to purchase up to 195,726 shares of Series E preferred stock    
Shares 195,726  
Amortized Cost $ 0.2  
Fair Value $ 0.0  
Investment, Identifier [Axis]: Paya, Inc and GTCR-Ultra Holdings LLC, Class B units    
Shares 2,878,372 2,878,372
Amortized Cost $ 0.0 [5] $ 0.0 [2]
Fair Value $ 2.0 [5] $ 2.1 [2]
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, Class A units    
Shares 5,000 5,000
Amortized Cost $ 5.0 $ 5.0
Fair Value $ 15.1 $ 12.3
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan    
Coupon [1]   6.25%
Spread [1]   5.25%
Principal [2],[7]   $ 0.2
Amortized Cost [2],[7]   0.2
Fair Value [2],[7]   $ 0.2
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan 1    
Spread [3] 5.75%  
Principal [4],[5] $ 13.7  
Amortized Cost [4],[5] 13.7  
Fair Value [4],[5] $ 13.7  
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan 2    
Coupon 9.42% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 0.1 [2],[7]
Amortized Cost 0.1 [4],[5] 0.1 [2],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [2],[7]
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan 3    
Coupon 8.92% [3] 6.75% [1]
Spread 5.25% [3] 5.75% [1]
Principal $ 0.2 [4],[5] $ 29.9 [2],[7]
Amortized Cost 0.2 [4],[5] 29.9 [2],[7]
Fair Value $ 0.2 [4],[5] $ 29.9 [2],[7]
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC,h First lien senior secured loan 1    
Coupon [3] 9.42%  
Investment, Identifier [Axis]: Pelican Products, Inc., Second lien senior secured loan    
Coupon 11.92% [3] 8.25% [1]
Spread 7.75% [3] 7.75% [1]
Principal $ 60.0 [4],[5] $ 60.0 [2],[7]
Amortized Cost 60.0 [4],[5] 60.0 [2],[7]
Fair Value $ 56.4 [4],[5] $ 59.4 [2],[7]
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan    
Coupon 9.87% [3] 6.25% [1]
Spread 6.25% [3] 5.50% [1]
Principal $ 40.2 [4],[5],[6] $ 1.4 [2],[7],[8]
Amortized Cost 43.8 [4],[5],[6] 1.3 [2],[7],[8]
Fair Value $ 39.8 [4],[5],[6] $ 1.4 [2],[7],[8]
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 2    
Coupon 9.87% [3] 7.25% [1]
Spread 6.25% [3] 6.25% [1]
Principal $ 12.6 [4],[5],[6] $ 44.3 [2],[7],[8]
Amortized Cost 14.0 [4],[5],[6] 44.1 [2],[7],[8]
Fair Value $ 12.4 [4],[5],[6] $ 44.3 [2],[7],[8]
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 3    
Coupon 9.13% [3] 7.25% [1]
Spread 5.50% [3] 6.25% [1]
Principal $ 6.2 [4],[5],[6] $ 13.8 [7],[8]
Amortized Cost 6.7 [4],[5],[6] 14.1 [7],[8]
Fair Value $ 6.0 [4],[5],[6] $ 13.8 [7],[8]
Investment, Identifier [Axis]: People Corporation, First lien senior secured revolving loan    
Coupon 9.92% [3] 7.25% [1]
Spread 6.25% [3] 6.25% [1]
Principal $ 5.1 [4],[5],[6] $ 2.9 [2],[7],[8]
Amortized Cost 5.5 [4],[5],[6] 2.8 [2],[7],[8]
Fair Value 5.1 [4],[5],[6] $ 2.9 [2],[7],[8]
Investment, Identifier [Axis]: Perforce Software, Inc., First lien senior secured revolving loan    
Amortized Cost 0.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: PetVet Care Centers, LLC, First lien senior secured loan    
Coupon [3] 8.13%  
Spread [3] 5.00%  
Principal [4],[5] $ 5.3  
Amortized Cost [4],[5] 5.1  
Fair Value [4],[5] $ 5.3  
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan    
Coupon 8.82% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 34.6 [4],[5] $ 8.1 [2],[7]
Amortized Cost 34.6 [4],[5] 8.1 [2],[7]
Fair Value $ 34.6 [4],[5] $ 8.1 [2],[7]
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 2    
Coupon 9.14% [3] 1.00% [1]
Spread 6.00% [3] 0.00% [1]
Principal $ 8.0 [4],[5] $ 0.2 [2],[7]
Amortized Cost 8.0 [4],[5] 0.2 [2],[7]
Fair Value $ 8.0 [4],[5] $ 0.2 [2],[7]
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 3    
Coupon 9.50% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 3.5 [4],[5] $ 34.2 [7]
Amortized Cost 3.5 [4],[5] 34.2 [7]
Fair Value $ 3.5 [4],[5] $ 34.2 [7]
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 4    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 0.7
Amortized Cost [2],[7]   0.7
Fair Value [2],[7]   $ 0.7
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured revolving loan    
Coupon 8.76% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 1.8 [4],[5],[13] $ 2.2 [2],[7],[14]
Amortized Cost 1.8 [4],[5],[13] 2.2 [2],[7],[14]
Fair Value $ 1.8 [4],[5],[13] $ 2.2 [2],[7],[14]
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured loan    
Coupon [3] 7.43%  
Spread [3] 5.50%  
Principal [4],[5] $ 19.0  
Amortized Cost [4],[5] 19.0  
Fair Value [4],[5] $ 18.6  
Investment, Identifier [Axis]: PhyMED Management LLC, Second lien senior secured loan    
Coupon [1]   15.00%
Coupon, PIK [1]   10.49%
Spread [1]   14.00%
Principal [2],[7]   $ 55.7
Amortized Cost [2],[7]   55.6
Fair Value [2],[7]   $ 52.4
Investment, Identifier [Axis]: Piper Jaffray Merchant Banking Fund I, L.P., Limited partnership interest    
Shares 0.0200  
Shares (as a percent)   2.00%
Amortized Cost $ 0.1 [6],[11] $ 0.1 [8],[12]
Fair Value $ 0.5 [6],[11] $ 1.0 [8],[12]
Investment, Identifier [Axis]: Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC, Co-Invest units    
Shares 5,969 5,969
Amortized Cost $ 0.6 [5] $ 0.6 [2]
Fair Value $ 0.6 [5] $ 0.9 [2]
Investment, Identifier [Axis]: Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC, First lien senior secured loan    
Coupon [3] 6.81%  
Spread [3] 4.00%  
Principal [4],[5] $ 22.7  
Amortized Cost [4],[5] 21.4  
Fair Value [4],[5] $ 21.3  
Investment, Identifier [Axis]: Plaskolite PPC Intermediate II LLC and Plaskolite PPC Blocker LLC, Second lien senior secured loan    
Coupon 10.16% [3] 8.00% [1]
Spread 7.25% [3] 7.00% [1]
Principal $ 55.0 [4],[5] $ 55.0 [2],[7]
Amortized Cost 55.0 [4],[5] 55.0 [2],[7]
Fair Value $ 51.7 [4],[5] $ 55.0 [2],[7]
Investment, Identifier [Axis]: Pluralsight, Inc., First lien senior secured loan    
Coupon 10.68% [3] 9.00% [1]
Spread 8.00% [3] 8.00% [1]
Principal $ 106.2 [4],[5] $ 117.7 [2],[7]
Amortized Cost 106.2 [4],[5] 117.7 [2],[7]
Fair Value $ 106.2 [4],[5] $ 117.7 [2],[7]
Investment, Identifier [Axis]: Poplicus Incorporated, Warrant to purchase shares of Series C preferred stock    
Shares   2,402,991
Amortized Cost [2]   $ 0.1
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Poplicus Incorporated, Warrant to purchase up to 2,402,991 shares of Series C preferred stock    
Shares 2,402,991  
Amortized Cost $ 0.1  
Fair Value $ 0.0  
Investment, Identifier [Axis]: PosiGen, Inc., Warrant to purchase shares of common stock    
Shares   1,112,022
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: PosiGen, Inc., Warrant to purchase shares of series D-1 preferred stock    
Shares   101,555
Amortized Cost [2]   $ 0.0
Fair Value [2]   0.0
Investment, Identifier [Axis]: PosiGen, Inc., Warrant to purchase up to 1,112,022 shares of common stock    
Shares 1,112,022  
Amortized Cost $ 0.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: PosiGen, Inc., Warrant to purchase up to 101,555 shares of series D-1 preferred stock    
Shares 101,555  
Amortized Cost $ 0.0  
Fair Value 0.0  
Investment, Identifier [Axis]: Potomac Intermediate Holdings II LLC    
Fair Value $ 163.8 $ 179.7
Investment, Identifier [Axis]: Potomac Intermediate Holdings II LLC, Series A units    
Shares 220,884,442 220,884,442
Amortized Cost $ 179.7 $ 179.7
Fair Value $ 163.8 $ 179.7
Investment, Identifier [Axis]: PracticeTek Purchaser, LLC and GSV PracticeTek Holdings, LLC, Class A units    
Coupon, PIK [1]   8.00%
Shares   11,804,000
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 8.2
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., Class A units    
Shares 88,420 88,420
Amortized Cost $ 13.4 [5] $ 13.4 [2]
Fair Value $ 23.8 [5] $ 13.4 [2]
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan    
Coupon 9.03% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 13.8 [4],[5],[6] $ 45.8 [2],[7],[8]
Amortized Cost 13.8 [4],[5],[6] 45.8 [2],[7],[8]
Fair Value $ 13.6 [4],[5],[6] $ 45.4 [2],[7],[8]
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan 2    
Coupon [3] 9.03%  
Spread [3] 6.00%  
Principal [4],[5],[6] $ 4.0  
Amortized Cost [4],[5],[6] 4.0  
Fair Value [4],[5],[6] $ 4.0  
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan 3    
Coupon [3] 9.03%  
Spread [3] 6.00%  
Principal [4],[5],[6] $ 13.8  
Amortized Cost [4],[5],[6] 13.8  
Fair Value [4],[5],[6] $ 13.7  
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan    
Coupon [3] 9.15%  
Spread [3] 5.50%  
Principal [4],[5],[6] $ 14.7  
Amortized Cost [4],[5],[6] 14.7  
Fair Value [4],[5],[6] $ 14.7  
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan 2    
Coupon [3] 8.78%  
Spread [3] 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]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan 3    
Coupon [3] 9.05%  
Spread [3] 5.50%  
Principal [4],[5],[6] $ 0.1  
Amortized Cost [4],[5],[6] 0.1  
Fair Value [4],[5],[6] $ 0.1  
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured revolving loan    
Coupon [3] 9.15%  
Spread [3] 5.50%  
Principal [4],[5],[6] $ 6.2  
Amortized Cost [4],[5],[6] 6.2  
Fair Value [4],[5],[6] $ 6.2  
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P., First lien senior secured loan    
Coupon 9.12% [3] 6.75% [1]
Spread 6.00% [3] 5.75% [1]
Principal $ 27.3 [4],[5] $ 27.5 [2],[7]
Amortized Cost 27.3 [4],[5] 27.5 [2],[7]
Fair Value $ 25.7 [4],[5] $ 27.3 [2],[7]
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P., First lien senior secured revolving loan    
Coupon [3] 9.12%  
Spread [3] 6.00%  
Principal [4],[5] $ 1.4  
Amortized Cost [4],[5] 1.4  
Fair Value [4],[5] $ 1.3  
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 $ 4.7 [5] $ 4.7 [2]
Fair Value $ 2.4 [5] $ 4.1 [2]
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, Class A units    
Shares 9,775 9,775
Amortized Cost $ 9.8 [5] $ 9.8 [2]
Fair Value $ 13.8 [5] $ 17.5 [2]
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, First lien senior secured loan    
Coupon 7.92% [3] 3.72% [1]
Spread 3.75% [3] 3.50% [1]
Principal $ 8.6 [4],[5] $ 8.6
Amortized Cost 8.6 [4],[5] 8.6
Fair Value 8.2 [4],[5] $ 8.6
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, First lien senior secured revolving loan    
Coupon [1]   3.41%
Spread [1]   3.25%
Principal [2],[14]   $ 12.0
Amortized Cost 0.0 [15] 12.0 [2],[14]
Fair Value $ 0.0 [15] $ 12.0 [2],[14]
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, Second lien senior secured loan    
Coupon 11.67% [3] 7.72% [1]
Spread 7.50% [3] 7.50% [1]
Principal $ 67.1 [5] $ 67.1 [2]
Amortized Cost 66.8 [5] 66.7 [2]
Fair Value $ 65.1 [5] 67.1 [2]
Investment, Identifier [Axis]: Prime Buyer, L.L.C., First lien senior secured revolving loan    
Coupon [3] 10.50%  
Spread [3] 4.25%  
Principal [4],[5] $ 1.3  
Amortized Cost [4],[5] 0.8  
Fair Value [4],[5] $ 1.3  
Investment, Identifier [Axis]: Prime Buyer, L.L.C., First lien senior secured revolving loan 2    
Coupon [3] 7.40%  
Spread [3] 5.25%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] 0.6  
Investment, Identifier [Axis]: Primrose Holding Corporation    
Fair Value $ 0.0 $ 27.0
Investment, Identifier [Axis]: Primrose Holding Corporation, Common stock    
Shares   7,227
Amortized Cost   $ 4.6
Fair Value   $ 27.0
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., First lien senior secured loan    
Coupon 8.27% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 6.7 [4],[5],[6] $ 35.8 [2],[7],[8]
Amortized Cost 6.7 [4],[5],[6] 35.8 [2],[7],[8]
Fair Value $ 6.5 [4],[5],[6] $ 35.8 [2],[7],[8]
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., Senior preferred stock    
Coupon [3] 15.75%  
Coupon, PIK 7.00% [3] 13.00% [1]
Spread 12.00% [3] 12.00% [1]
Shares 65,761 65,761
Amortized Cost $ 68.0 [5],[6] $ 64.4 [2],[7],[8]
Fair Value $ 72.0 [5],[6] $ 68.3 [2],[7],[8]
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., Warrant to purchase shares of common stock    
Shares   527,226
Amortized Cost [8]   $ 4.0
Fair Value [8]   $ 3.4
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., Warrant to purchase up to 527,226 units of common stock    
Shares 527,226  
Amortized Cost [5],[6] $ 4.0  
Fair Value [5],[6] $ 2.4  
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, Class A units    
Shares 7,900,000 7,900,000
Amortized Cost $ 7.9 [5] $ 7.9 [2]
Fair Value $ 9.0 [5] $ 7.9 [2]
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, First lien senior secured loan    
Coupon 9.13% [3] 6.25% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 97.6 [4],[5] $ 93.8 [2],[7]
Amortized Cost 97.6 [4],[5] 93.8 [2],[7]
Fair Value 95.7 [4],[5] 92.8 [2],[7]
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC    
Fair Value $ 96.5 $ 56.3
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, Class A units    
Shares 113,617 113,617
Amortized Cost $ 4.9 [5] $ 4.9 [2]
Fair Value $ 34.6 [5] $ 0.6 [2]
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan    
Coupon [1]   6.00%
Coupon, PIK [1]   3.10%
Spread [1]   5.00%
Principal [2],[7]   $ 15.0
Amortized Cost [2],[7]   14.9
Fair Value [2],[7]   $ 15.0
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 1    
Coupon [3] 11.49%  
Coupon, PIK [3] 6.50%  
Spread [3] 8.50%  
Principal [4],[5] $ 38.3  
Amortized Cost [4],[5] 38.3  
Fair Value [4],[5] $ 38.3  
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 2    
Coupon [3] 10.49%  
Coupon, PIK 6.04% [3] 9.75% [1]
Spread 7.50% [3] 8.50% [1]
Principal $ 15.3 [4],[5] $ 34.9 [2],[7]
Amortized Cost 15.2 [4],[5] 34.9 [2],[7]
Fair Value $ 15.3 [4],[5] $ 34.9 [2],[7]
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 3    
Coupon 11.10% [3] 8.50% [1]
Coupon, PIK 6.00% [3] 2.50% [1]
Spread 7.50% [3] 7.50% [1]
Principal $ 7.5 [4],[5] $ 0.8 [2],[7]
Amortized Cost 7.5 [4],[5] 0.8 [2],[7]
Fair Value $ 7.5 [4],[5] $ 0.8 [2],[7]
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan 4    
Coupon [3] 11.17%  
Coupon, PIK 2.50% [3] 6.00% [1]
Spread 7.50% [3] 5.00% [1]
Principal $ 0.8 [4],[5] $ 5.0 [2],[7]
Amortized Cost 0.8 [4],[5] 5.0 [2],[7]
Fair Value $ 0.8 [4],[5] $ 5.0 [2],[7]
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., First lien senior secured loan    
Coupon, PIK [3] 12.00%  
Principal [5] $ 16.6  
Amortized Cost [5] 15.5  
Fair Value [5] $ 15.8  
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Series E preferred stock    
Shares 219,035  
Amortized Cost [5] $ 0.7  
Fair Value [5] $ 0.7  
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Warrant to purchase up to 3,223,122 shares of common stock    
Shares 3,223,122  
Amortized Cost [5] $ 1.8  
Fair Value [5] $ 2.7  
Investment, Identifier [Axis]: ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P., First lien senior secured loan    
Coupon 9.17% [3] 6.25% [1]
Spread 5.50% [3] 5.25% [1]
Principal $ 5.5 [4],[5] $ 3.9 [2],[7]
Amortized Cost 5.5 [4],[5] 3.9 [2],[7]
Fair Value $ 5.5 [4],[5] $ 3.9 [2],[7]
Investment, Identifier [Axis]: ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P., Limited partnership units    
Shares 1,624,000 1,624,000
Amortized Cost $ 1.6 [5] $ 1.6 [2]
Fair Value $ 1.5 [5] $ 1.6 [2]
Investment, Identifier [Axis]: Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc., Class A common stock    
Shares 7,445 7,445
Amortized Cost $ 7.4 [5] $ 7.4 [2]
Fair Value $ 13.4 [5] $ 16.8 [2]
Investment, Identifier [Axis]: Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc., Class B common stock    
Shares 1,841,609 1,841,609
Amortized Cost $ 0.1 [5] $ 0.1 [2]
Fair Value $ 0.1 [5] $ 0.2 [2]
Investment, Identifier [Axis]: Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc., First lien senior secured loan    
Coupon [3] 7.12%  
Spread [3] 4.00%  
Principal [5],[11] $ 2.9  
Amortized Cost [5],[11] 2.8  
Fair Value [5],[11] $ 2.7  
Investment, Identifier [Axis]: Project Essential Bidco, Inc. and Project Essential Super Parent, Inc., First lien senior secured loan    
Coupon 6.75% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 36.3 [4],[5] $ 36.6 [2],[7]
Amortized Cost 36.3 [4],[5] 36.6 [2],[7]
Fair Value $ 34.8 [4],[5] $ 35.8 [2],[7]
Investment, Identifier [Axis]: Project Essential Bidco, Inc. and Project Essential Super Parent, Inc., Preferred shares    
Coupon, PIK 13.25% [3] 10.50% [1]
Spread 9.50% [3] 9.50% [1]
Shares 26,436 26,436
Amortized Cost $ 30.9 [5] $ 28.5 [2],[7]
Fair Value $ 29.4 [5] $ 28.5 [2],[7]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., Class A units    
Coupon, PIK [1]   9.00%
Shares   1,599
Amortized Cost [2]   $ 1.9
Fair Value [2]   $ 1.9
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., Class B units    
Shares 588,636 588,636
Amortized Cost $ 0.0 [5] $ 0.0 [2]
Fair Value $ 5.1 [5] $ 0.8 [2]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan    
Coupon [1]   9.25%
Spread [1]   8.25%
Principal [7]   $ 44.1
Amortized Cost [7]   44.1
Fair Value [7]   $ 44.1
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 1    
Coupon [3] 10.28%  
Spread [3] 7.75%  
Principal [4],[5] $ 43.8  
Amortized Cost [4],[5] 43.8  
Fair Value [4],[5] $ 43.8  
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 2    
Coupon 10.78% [3] 9.25% [1]
Spread 7.75% [3] 8.25% [1]
Principal $ 19.2 [4],[5] $ 12.9 [2],[7]
Amortized Cost 19.2 [4],[5] 12.9 [2],[7]
Fair Value $ 19.2 [4],[5] $ 12.9 [2],[7]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan 3    
Coupon 10.78% [3] 9.25% [1]
Spread 7.75% [3] 8.25% [1]
Principal $ 12.8 [4],[5] $ 19.4 [2],[7]
Amortized Cost 12.8 [4],[5] 19.4 [2],[7]
Fair Value $ 12.8 [4],[5] $ 19.4 [2],[7]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured revolving loan    
Coupon 10.27% [3] 10.50% [1]
Spread 7.75% [3] 7.25% [1]
Principal $ 2.1 [4],[5],[13] $ 0.8 [2],[7],[14]
Amortized Cost 2.1 [4],[5],[13] 0.7 [2],[7],[14]
Fair Value $ 2.1 [4],[5],[13] $ 0.8 [2],[7],[14]
Investment, Identifier [Axis]: Project Ruby Ultimate Parent Corp. (dba Wellsky), Second lien senior secured loan    
Coupon [1]   7.25%
Spread [1]   6.50%
Principal [2],[7]   $ 193.1
Amortized Cost [2],[7]   193.1
Fair Value [2],[7]   $ 193.1
Investment, Identifier [Axis]: Project Ruby Ultimate Parent Corp., Second lien senior secured loan    
Coupon [3] 9.62%  
Spread [3] 6.50%  
Principal [4],[5] $ 193.1  
Amortized Cost [4],[5] 193.1  
Fair Value [4],[5] $ 185.3  
Investment, Identifier [Axis]: Proofpoint, Inc., First lien senior secured loan    
Coupon [3] 6.32%  
Spread 3.25% [3] 3.25% [1]
Principal $ 1.0 [4],[5],[11] $ 1.0 [2],[7],[12]
Amortized Cost 0.9 [4],[5],[11] 1.0 [2],[7],[12]
Fair Value $ 0.9 [4],[5],[11] $ 1.0 [2],[7],[12]
Investment, Identifier [Axis]: Proofpoint, Inc., Second lien senior secured loan    
Coupon 9.32% [3] 6.75% [1]
Spread 6.25% [3] 6.25% [1]
Principal $ 34.6 [4],[5] $ 34.6 [2],[7]
Amortized Cost 34.5 [4],[5] 34.4 [2],[7]
Fair Value $ 34.6 [4],[5] $ 34.6 [2],[7]
Investment, Identifier [Axis]: Proofpoint, Inc.,h First lien senior secured loan    
Coupon [1]   3.75%
Investment, Identifier [Axis]: Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings, LLC, Class A units    
Shares 1,001  
Amortized Cost [5] $ 9.7  
Fair Value [5] $ 9.7  
Investment, Identifier [Axis]: Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings, LLC, First lien senior secured loan    
Coupon [3] 8.78%  
Spread [3] 6.00%  
Principal [4],[5] $ 4.9  
Amortized Cost [4],[5] 4.9  
Fair Value [4],[5] $ 4.8  
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured loan    
Coupon 10.12% [3] 8.00% [1]
Coupon, PIK 1.25% [3] 1.25% [1]
Spread 7.00% [3] 7.00% [1]
Principal $ 18.3 [4],[5] $ 18.2 [7]
Amortized Cost 18.3 [4],[5] 18.2 [7]
Fair Value $ 18.3 [4],[5] $ 16.8 [7]
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured loan 2    
Coupon 10.12% [3] 8.00% [1]
Coupon, PIK 1.25% [3] 1.25% [1]
Spread 7.00% [3] 7.00% [1]
Principal $ 6.4 [4],[5] $ 6.4 [2],[7]
Amortized Cost 6.4 [4],[5] 6.4 [2],[7]
Fair Value $ 6.4 [4],[5] $ 5.8 [2],[7]
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured revolving loan    
Coupon 9.99% [3] 8.00% [1]
Coupon, PIK 1.25% [3] 1.25% [1]
Spread 7.00% [3] 7.00% [1]
Principal $ 9.7 [4],[5],[13] $ 9.6 [2],[7],[14]
Amortized Cost 9.7 [4],[5],[13] 9.6 [2],[7],[14]
Fair Value $ 9.7 [4],[5],[13] $ 8.8 [2],[7],[14]
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, Preferred membership units    
Shares 996,833 996,833
Amortized Cost $ 1.0 $ 1.0
Fair Value $ 0.9 $ 0.5
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan    
Coupon [1]   7.25%
Spread [1]   6.25%
Principal [2],[7]   $ 8.1
Amortized Cost [2],[7]   8.1
Fair Value [2],[7]   $ 8.1
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 1    
Coupon [3] 8.76%  
Spread [3] 6.25%  
Principal [4],[5] $ 8.1  
Amortized Cost [4],[5] 8.1  
Fair Value [4],[5] $ 8.1  
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 2    
Coupon 10.43% [3] 7.50% [1]
Spread 6.25% [3] 6.50% [1]
Principal $ 6.8 [4],[5] $ 15.5 [2],[7]
Amortized Cost 6.8 [4],[5] 15.5 [2],[7]
Fair Value $ 6.8 [4],[5] $ 15.5 [2],[7]
Investment, Identifier [Axis]: R2 Acquisition Corp., Common stock    
Shares 250,000 250,000
Amortized Cost $ 0.2 [5] $ 0.2 [2]
Fair Value $ 0.2 [5] $ 0.5 [2]
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured loan    
Coupon [3] 7.71%  
Spread [3] 5.00%  
Principal [4],[5] $ 11.5  
Amortized Cost [4],[5] 11.5  
Fair Value [4],[5] $ 11.3  
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan    
Coupon [3] 7.83%  
Spread [3] 5.00%  
Principal [4],[5] $ 1.4  
Amortized Cost [4],[5] 1.4  
Fair Value [4],[5] $ 1.4  
Investment, Identifier [Axis]: RC V Tecmo Investor LLC, Common member units    
Shares 9,624,000 9,624,000
Amortized Cost $ 8.3 [5] $ 8.3 [2]
Fair Value $ 22.6 [5] $ 19.3 [2]
Investment, Identifier [Axis]: RE Community Holdings GP, LLC and RE Community Holdings, LP, Limited partnership interest    
Shares (as a percent) 2.86% 2.86%
Amortized Cost $ 0.0 $ 0.0 [2]
Fair Value $ 0.0 $ 0.0 [2]
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 $ 0.0 [2]
Fair Value $ 0.0 $ 0.0 [2]
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 [2],[8]
Fair Value $ 25.3 [5],[6] $ 19.0 [2],[8]
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., Class A common stock    
Shares 464.90  
Amortized Cost [5] $ 4.6  
Fair Value [5] $ 5.5  
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., First lien senior secured loan    
Coupon [3] 9.95%  
Spread [3] 6.25%  
Principal [4],[5] $ 40.2  
Amortized Cost [4],[5] 40.2  
Fair Value [4],[5] $ 39.4  
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., First lien senior secured loan 2    
Coupon [3] 9.42%  
Spread [3] 5.75%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: RMS Holdco II, LLC & RMS Group Holdings, Inc., Class A common stock    
Shares   464.9
Amortized Cost [2]   $ 4.6
Fair Value [2]   $ 4.6
Investment, Identifier [Axis]: RMS Holdco II, LLC & RMS Group Holdings, Inc., First lien senior secured loan    
Coupon [1]   6.50%
Spread [1]   5.75%
Principal [2],[7]   $ 23.5
Amortized Cost [2],[7]   23.5
Fair Value [2],[7]   $ 23.3
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan    
Coupon 8.30% [3] 6.25% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 32.9 [4],[5] $ 33.1 [7]
Amortized Cost 32.9 [4],[5] 33.1 [7]
Fair Value $ 31.9 [4],[5] $ 33.1 [7]
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured revolving loan    
Coupon [1]   7.75%
Spread [1]   4.50%
Principal [2],[7],[14]   $ 0.3
Amortized Cost [2],[7],[14]   0.3
Fair Value [2],[7],[14]   $ 0.3
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc., First lien senior secured loan    
Coupon 10.02% [3] 8.25% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 22.6 [4],[5] $ 28.5 [7]
Amortized Cost [4],[5] 22.6  
Fair Value $ 22.1 [4],[5] $ 28.5 [7]
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc., First lien senior secured revolving loan    
Coupon 9.57% [3] 8.25% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 9.8 [4],[5] $ 5.0 [2],[7]
Amortized Cost 9.8 [4],[5] 5.0 [2],[7]
Fair Value $ 9.6 [4],[5] 5.0 [2],[7]
Investment, Identifier [Axis]: RTI gSurgical, Inc. and Pioneer Surgical Technology, Inc., First lien senior secured loan    
Amortized Cost [7]   $ 28.5
Investment, Identifier [Axis]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited, First lien senior secured revolving loan    
Coupon [3] 7.94%  
Spread [3] 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]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited, First lien senior secured revolving loan 2    
Coupon [3] 8.80%  
Spread [3] 5.75%  
Principal [4],[5],[6] $ 0.7  
Amortized Cost [4],[5],[6] 0.7  
Fair Value [4],[5],[6] $ 0.7  
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, Class A common units    
Shares 2,880,582 2,880,582
Amortized Cost $ 3.5  
Fair Value $ 5.4 $ 4.8
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, First lien senior secured loan    
Coupon 8.92% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 8.5 [4],[5],[6] $ 28.5 [2],[7],[8]
Amortized Cost 8.5 [4],[5],[6] 28.5 [2],[7],[8]
Fair Value $ 8.4 [4],[5],[6] 28.2 [2],[7],[8]
Investment, Identifier [Axis]: Raptor Thechnologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC, Class A common units    
Amortized Cost   $ 3.5
Investment, Identifier [Axis]: Rawlings Sporting Goods Company, Inc. and Easton Diamond Sports, LLC, First lien senior secured loan    
Coupon 10.42% [3] 7.75% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 49.8 [4],[5] $ 93.2 [2],[7]
Amortized Cost 49.8 [4],[5] 93.2 [2],[7]
Fair Value $ 49.8 [4],[5] $ 93.2 [2],[7]
Investment, Identifier [Axis]: Rawlings Sporting Goods Company, Inc. and Easton Diamond Sports, LLC, First lien senior secured loan 2    
Coupon 10.42% [3] 7.75% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 0.1 [4],[5] $ 8.8 [2],[7]
Amortized Cost 0.1 [4],[5] 8.8 [2],[7]
Fair Value $ 0.1 [4],[5] $ 8.8 [2],[7]
Investment, Identifier [Axis]: RealPage, Inc., Second lien senior secured loan    
Coupon 9.62% [3] 7.25% [1]
Spread 6.50% [3] 6.50% [1]
Principal $ 84.1 [4],[5] $ 84.1 [2],[7]
Amortized Cost 83.0 [4],[5] 82.9 [2],[7]
Fair Value $ 83.2 [4],[5] $ 84.1 [2],[7]
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan    
Coupon 8.79% [3] 7.50% [1]
Spread 6.50% [3] 6.50% [1]
Principal $ 61.4 [4],[5] $ 61.9 [7]
Amortized Cost 61.4 [4],[5] 61.9 [7]
Fair Value $ 60.8 [4],[5] $ 61.9 [7]
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 2    
Coupon 8.79% [3] 7.50% [1]
Spread 6.50% [3] 6.50% [1]
Principal $ 12.9 [4],[5] $ 4.3 [2],[7]
Amortized Cost 12.9 [4],[5] 4.3 [2],[7]
Fair Value $ 12.8 [4],[5] $ 4.3 [2],[7]
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 3    
Coupon 8.79% [3] 7.50% [1]
Spread 6.50% [3] 6.50% [1]
Principal $ 4.3 [4],[5] $ 13.0 [2],[7]
Amortized Cost 4.3 [4],[5] 13.0 [2],[7]
Fair Value 4.2 [4],[5] $ 13.0 [2],[7]
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan    
Coupon 9.87% [3] 8.00% [1]
Spread 6.75% [3] 7.00% [1]
Principal $ 5.6 [4],[5] $ 1.0 [2],[7]
Amortized Cost 5.6 [4],[5] 1.0 [2],[7]
Fair Value $ 5.6 [4],[5] $ 1.0 [2],[7]
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan 2    
Coupon 9.78% [3] 8.00% [1]
Spread 6.75% [3] 7.00% [1]
Principal $ 0.8 [4],[5] $ 12.5 [2],[7]
Amortized Cost 0.8 [4],[5] 12.5 [2],[7]
Fair Value $ 0.8 [4],[5] $ 12.5 [2],[7]
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan 3    
Coupon [3] 9.87%  
Spread [3] 6.75%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, Series D units    
Coupon, PIK 8.00% [3] 8.00% [1]
Shares 9,210,087 5,291,723
Amortized Cost $ 9.6 $ 5.7
Fair Value $ 20.4 $ 11.6
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan    
Coupon [1]   8.50%
Coupon, PIK [1]   2.00%
Spread [1]   7.50%
Principal [7]   $ 25.0
Amortized Cost [7]   25.0
Fair Value [7]   $ 25.0
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan 1    
Coupon [3] 9.57%  
Coupon, PIK [3] 2.00%  
Spread [3] 6.50%  
Principal [4],[5] $ 24.0  
Amortized Cost [4],[5] 24.0  
Fair Value [4],[5] $ 23.5  
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan 2    
Coupon 9.62% [3] 8.50% [1]
Coupon, PIK [3] 2.00%  
Spread 6.50% [3] 7.50% [1]
Principal $ 1.2 [4],[5] $ 1.1 [7]
Amortized Cost 1.2 [4],[5] 1.1 [7]
Fair Value $ 1.2 [4],[5] $ 1.1 [7]
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan    
Coupon [1]   8.50%
Coupon, PIK [1]   2.00%
Spread [1]   7.50%
Principal [2],[7],[14]   $ 12.1
Amortized Cost [2],[7],[14]   12.1
Fair Value [2],[7],[14]   $ 12.1
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 1    
Coupon [3] 9.48%  
Coupon, PIK [3] 2.00%  
Spread [3] 6.50%  
Principal [4],[5],[13] $ 33.4  
Amortized Cost [4],[5],[13] 33.4  
Fair Value [4],[5],[13] $ 32.8  
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 2    
Coupon 9.62% [3] 8.50% [1]
Coupon, PIK 2.00% [3] 2.00% [1]
Spread 6.50% [3] 7.50% [1]
Principal $ 0.8 [4],[5] $ 0.6 [2],[7]
Amortized Cost 0.7 [4],[5] 0.6 [2],[7]
Fair Value $ 0.8 [4],[5] $ 0.6 [2],[7]
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase shares of common stock    
Shares   5,393,194
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase shares of common stock 2    
Shares   987
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase up to 5,393,194 units of common stock    
Shares 5,393,194  
Amortized Cost $ 0.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase up to 987 units of common stock    
Shares 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 8.12% [3] 6.50% [1]
Spread 5.00% [3] 5.50% [1]
Principal $ 8.7 [4],[5] $ 37.9 [2],[7]
Amortized Cost 8.7 [4],[5] 37.9 [2],[7]
Fair Value $ 8.7 [4],[5] $ 37.5 [2],[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 [2]
Fair Value $ 2.8 [5] $ 2.6 [2]
Investment, Identifier [Axis]: Relativity ODA LLC, First lien senior secured loan    
Coupon [3] 10.59%  
Coupon, PIK 4.00% [3] 8.50% [1]
Spread 8.00% [3] 7.50% [1]
Principal $ 21.9 [4],[5] $ 59.8 [2],[7]
Amortized Cost 21.9 [4],[5] 59.8 [2],[7]
Fair Value $ 21.9 [4],[5] $ 59.8 [2],[7]
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC, Class A common units    
Shares 163,820 163,820
Amortized Cost $ 4.9 [5] $ 4.9 [2]
Fair Value $ 4.5 [5] $ 4.8 [2]
Investment, Identifier [Axis]: Respicardia, Inc., Warrant to purchase shares of Series C preferred stock    
Shares   99,094
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured loan    
Coupon [3] 9.42%  
Spread [3] 5.75%  
Principal [4],[5] $ 0.7  
Amortized Cost [4],[5] 0.7  
Fair Value [4],[5] $ 0.6  
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured revolving loan    
Coupon [3] 9.19%  
Spread [3] 5.75%  
Principal [4],[5] $ 0.9  
Amortized Cost [4],[5] 0.9  
Fair Value [4],[5] $ 0.9  
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan    
Coupon [1]   6.50%
Spread [1]   5.75%
Principal [2],[7],[8]   $ 9.5
Amortized Cost [2],[7],[8]   9.5
Fair Value [2],[7],[8]   $ 9.5
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 1    
Coupon [3] 8.62%  
Spread [3] 5.50%  
Principal [4],[5],[6] $ 0.3  
Amortized Cost [4],[5],[6] 0.3  
Fair Value [4],[5],[6] $ 0.3  
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 2    
Coupon 8.62% [3] 4.34% [1]
Spread 5.50% [3] 4.25% [1]
Principal $ 0.1 [4],[5],[6] $ 0.7 [8]
Amortized Cost 0.1 [4],[5],[6] 0.7 [8]
Fair Value $ 0.1 [4],[5],[6] $ 0.7 [8]
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 3    
Coupon 8.62% [3] 4.35% [1]
Spread 5.50% [3] 4.25% [1]
Principal $ 0.1 [4],[5],[6] $ 7.7 [2],[8]
Amortized Cost 0.1 [4],[5],[6] 7.7 [2],[8]
Fair Value 0.1 [4],[5],[6] $ 7.7 [2],[8]
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [6],[15] $ 0.0 [8],[16]
Fair Value $ 0.0 [6],[15] $ 0.0 [8],[16]
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan    
Coupon [3] 8.62%  
Spread [3] 5.75%  
Principal [4],[5] $ 5.9  
Amortized Cost [4],[5] 5.9  
Fair Value [4],[5] $ 5.8  
Investment, Identifier [Axis]: Riverview Power LLC, First lien senior secured loan    
Coupon 12.68% [3] 10.00% [1]
Spread 9.00% [3] 9.00% [1]
Principal $ 50.1 [4],[5] $ 54.2 [2],[7]
Amortized Cost 49.8 [4],[5] 53.7 [2],[7]
Fair Value $ 50.1 [4],[5] $ 54.2 [2],[7]
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC, First lien senior secured loan    
Coupon 8.81% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 17.0 [4],[5] $ 17.1 [2],[7]
Amortized Cost 17.0 [4],[5] 17.1 [2],[7]
Fair Value $ 16.5 [4],[5] $ 16.9 [2],[7]
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC, First lien senior secured revolving loan    
Coupon 8.82% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 0.9 [4],[5] $ 0.4 [2],[7]
Amortized Cost 0.9 [4],[5] 0.4 [2],[7]
Fair Value 0.9 [4],[5] 0.3 [2],[7]
Investment, Identifier [Axis]: Rug Doctor, LLC and RD Holdco Inc.    
Fair Value $ 9.9 $ 21.0
Investment, Identifier [Axis]: Rug Doctor, LLC and RD Holdco Inc., Common stock    
Shares 458,596 458,596
Amortized Cost $ 14.0 $ 14.0
Fair Value 0.0 $ 0.0
Investment, Identifier [Axis]: Rug Doctor, LLC and RD Holdco Inc., Second lien senior secured loan    
Coupon, PIK [1]   11.25%
Spread [1]   9.75%
Principal 23.9 [5],[9] $ 22.0 [2],[7]
Amortized Cost 22.1 [5],[9] 22.0 [2],[7]
Fair Value $ 9.9 [5],[9] $ 21.0 [2],[7]
Investment, Identifier [Axis]: Rug Doctor, LLC and RD Holdco Inc., Warrant to purchase shares of common stock    
Shares   56,372
Amortized Cost   $ 0.0
Fair Value   0.0
Investment, Identifier [Axis]: Rug Doctor, LLC and RD Holdco Inc., Warrant to purchase up to 56,372 shares of common stock    
Shares 56,372  
Amortized Cost $ 0.0  
Fair Value 0.0  
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC)    
Fair Value $ 0.2 $ 0.2
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC), Class B common units    
Shares 126,278,000 126,278,000
Amortized Cost $ 0.0 $ 0.0
Fair Value $ 0.2 $ 0.2
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC), Common units    
Shares 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   3,157,895
Amortized Cost   $ 0.0
Fair Value   $ 0.0
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC), Warrant to purchase up to 3,157,895 units    
Shares 3,157,895  
Amortized Cost $ 0.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: SCI PH Parent, Inc., Series B shares    
Shares 11.4764 11.4764
Amortized Cost $ 1.1 [5] $ 1.1 [2]
Fair Value $ 3.7 [5] $ 1.2 [2]
Investment, Identifier [Axis]: SCIH Salt Holdings Inc., First lien senior secured revolving loan    
Coupon [3] 5.00% [1]
Spread [1]   4.00%
Principal [2],[7],[14]   $ 2.1
Amortized Cost $ 0.0 [15] 2.0 [2],[7],[14]
Fair Value $ 0.0 [15] $ 1.9 [2],[7],[14]
Investment, Identifier [Axis]: SCM Insurance Services Inc., First lien senior secured loan    
Coupon 10.45% [3] 6.00% [1]
Spread 6.25% [3] 5.00% [1]
Principal $ 60.0 [4],[5],[6] $ 20.4 [2],[7],[8]
Amortized Cost 64.4 [4],[5],[6] 20.6 [2],[7],[8]
Fair Value $ 60.0 [4],[5],[6] $ 20.4 [2],[7],[8]
Investment, Identifier [Axis]: SCM Insurance Services Inc., Second lien senior secured loan    
Coupon [1]   10.00%
Spread [1]   9.00%
Principal [2],[7],[8]   $ 60.0
Amortized Cost [2],[7],[8]   60.5
Fair Value [2],[7],[8]   $ 60.0
Investment, Identifier [Axis]: SE1 Generation, LLC, Senior subordinated loan    
Coupon 10.25% [3] 10.25% [1]
Coupon, PIK 5.50% [3] 5.50% [1]
Principal $ 61.6 [5] $ 58.8 [2]
Amortized Cost 61.6 [5] 58.8 [2]
Fair Value $ 60.4 [5] $ 57.0 [2]
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan    
Coupon [1]   5.75%
Spread [1]   4.75%
Principal [7]   $ 10.1
Amortized Cost [7]   10.1
Fair Value [7]   $ 10.1
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 1    
Coupon [3] 8.45%  
Spread [3] 4.75%  
Principal [4],[5] $ 10.1  
Amortized Cost [4],[5] 10.1  
Fair Value [4],[5] $ 10.1  
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 2    
Coupon 8.45% [3] 5.75% [1]
Spread 4.75% [3] 4.75% [1]
Principal $ 6.2 [4],[5] $ 6.3 [7]
Amortized Cost 6.2 [4],[5] 6.3 [7]
Fair Value $ 6.2 [4],[5] $ 6.3 [7]
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 3    
Coupon [3] 8.30%  
Spread [3] 4.75%  
Principal [4],[5] $ 0.4  
Amortized Cost [4],[5] 0.4  
Fair Value [4],[5] $ 0.4  
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured revolving loan    
Coupon [3] 7.90%  
Spread [3] 4.75%  
Principal [4] $ 6.4  
Amortized Cost [4] 6.4  
Fair Value [4] $ 6.4  
Investment, Identifier [Axis]: SG Acquisition, Inc., First lien senior secured loan    
Coupon 9.17% [3] 5.50% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 33.8 [4],[5] $ 35.6 [7]
Amortized Cost 33.8 [4],[5] 35.6 [7]
Fair Value 33.8 [4],[5] $ 35.6 [7]
Investment, Identifier [Axis]: SHO Holding I Corporation, Second lien senior secured loan    
Coupon, PIK [1]   9.54%
Spread [1]   8.54%
Principal 124.9 [5],[9] $ 116.2 [2],[7]
Amortized Cost 124.3 [5],[9] 115.6 [2],[7]
Fair Value $ 82.4 [5],[9] $ 98.9 [2],[7]
Investment, Identifier [Axis]: SK SPV IV, LLC, Series A common stock    
Shares 12,500 12,500
Amortized Cost $ 0.6 $ 0.6 [2]
Fair Value $ 0.0 $ 0.0 [2]
Investment, Identifier [Axis]: SK SPV IV, LLC, Series B common stock    
Shares 12,500 12,500
Amortized Cost $ 0.6 $ 0.6 [2]
Fair Value $ 0.0 $ 0.0 [2]
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, Inc., Series A units    
Shares 8,041 8,041
Amortized Cost $ 8.0 [5] $ 8.0 [2]
Fair Value $ 0.1 [5] $ 9.6 [2]
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, Inc., Series B units    
Shares 804,142 804,142
Amortized Cost $ 0.0 [5] $ 0.0 [2]
Fair Value $ 9.7 [5] $ 0.0 [2]
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, Class A-2 units    
Shares 4,812  
Amortized Cost [5] $ 4.9  
Fair Value [5] $ 4.8  
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, First lien senior secured loan    
Coupon, PIK [3] 11.31%  
Spread [3] 7.50%  
Principal [4],[5] $ 59.4  
Amortized Cost [4],[5] 54.8  
Fair Value [4],[5] $ 54.7  
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, Warrant to purchase up to 6,118 Class A-2 units    
Shares 6,118  
Amortized Cost [5] $ 4.7  
Fair Value [5] $ 4.7  
Investment, Identifier [Axis]: SSE Buyer, Inc., Supply Source Enterprises, Inc., Impact Products LLC, The Safety Zone, LLC and SSE Parent, LP, First lien senior secured loan    
Coupon 12.89% [3] 10.22% [1]
Spread 9.22% [3] 9.22% [1]
Principal $ 20.9 [4],[5] $ 21.4 [2],[7]
Amortized Cost 20.9 [4],[5] 21.4 [2],[7]
Fair Value $ 17.9 [4],[5] $ 19.9 [2],[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-1 units    
Shares 2,173 2,173
Amortized Cost $ 1.1 [5] $ 1.1 [2]
Fair Value $ 0.2 [5] $ 0.6 [2]
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 2,173 2,173
Amortized Cost $ 1.1 [5] $ 1.1 [2]
Fair Value $ 0.2 [5] $ 0.6 [2]
Investment, Identifier [Axis]: SV-Burton Holdings, LLC & LBC Breeze Holdings LLC, Class A units    
Shares   4,296
Amortized Cost   $ 4.3
Fair Value   $ 4.3
Investment, Identifier [Axis]: SV-Burton Holdings, LLC & LBC Breeze Holdings LLC, First lien senior secured loan    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [2],[7]   $ 11.0
Amortized Cost [2],[7]   11.0
Fair Value [2],[7]   $ 10.9
Investment, Identifier [Axis]: SV-Burton Holdings, LLC and LBC Breeze Holdings LLC, Class A units    
Shares 4,296  
Amortized Cost $ 4.3  
Fair Value $ 4.7  
Investment, Identifier [Axis]: SV-Burton Holdings, LLC and LBC Breeze Holdings LLC, First lien senior secured loan    
Coupon [3] 8.31%  
Spread [3] 5.50%  
Principal [4],[5] $ 9.0  
Amortized Cost [4],[5] 9.0  
Fair Value [4],[5] $ 8.9  
Investment, Identifier [Axis]: SVP-Singer Holdings Inc. and SVP-Singer Holdings LP, Class A common units    
Shares 6,264,706 6,264,706
Amortized Cost $ 26.1 [5] $ 26.1 [2]
Fair Value $ 17.8 [5] $ 24.5 [2]
Investment, Identifier [Axis]: SVP-Singer Holdings Inc. and SVP-Singer Holdings LP, First lien senior secured loan    
Coupon 10.42% [3] 7.50% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 44.6 [4],[5] $ 44.9 [2],[7]
Amortized Cost 43.5 [4],[5] 43.7 [2],[7]
Fair Value $ 39.2 [4],[5] $ 42.3 [2],[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 10.37% [3] 8.25% [1]
Spread 7.25% [3] 7.25% [1]
Principal $ 48.0 [4],[5] $ 46.2 [2],[7]
Amortized Cost 48.0 [4],[5] 46.2 [2],[7]
Fair Value $ 48.0 [4],[5] $ 46.2 [2],[7]
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC, First lien senior secured loan    
Coupon [3] 8.87%  
Coupon, PIK [3] 1.63%  
Spread [3] 5.75%  
Principal [4],[5] $ 14.1  
Amortized Cost [4],[5] 14.1  
Fair Value [4],[5] $ 14.1  
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC, Series A units    
Shares 732  
Amortized Cost $ 15.6  
Fair Value $ 18.2  
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC and Landscape Parallel Partners, L.P., Class A units    
Shares   3,841
Amortized Cost [2]   $ 9.5
Fair Value [2]   $ 9.5
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC and Landscape Parallel Partners, L.P., First lien senior secured loan    
Coupon [1]   6.75%
Spread [1]   5.75%
Principal [2],[7]   $ 5.8
Amortized Cost [2],[7]   5.8
Fair Value [2],[7]   $ 5.8
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC, Tender Lawn Care ULC and Landscape Parallel Partners, L.P., Class A units    
Shares 4,502  
Amortized Cost [5] $ 11.1  
Fair Value [5] $ 14.9  
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 [3] 8.83%  
Spread [3] 5.75%  
Principal [4],[5] $ 0.6  
Amortized Cost [4],[5] 0.6  
Fair Value [4],[5] $ 0.6  
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 [3] 8.83%  
Spread [3] 5.75%  
Principal [4],[5] $ 0.5  
Amortized Cost [4],[5] 0.5  
Fair Value [4],[5] $ 0.5  
Investment, Identifier [Axis]: SelectQuote, Inc., First lien senior secured loan    
Coupon 11.03% [3] 5.75% [1]
Coupon, PIK [3] 2.00%  
Spread 8.00% [3] 5.00% [1]
Principal $ 22.2 [4],[5] $ 22.6 [2],[7]
Amortized Cost 22.2 [4],[5] 22.6 [2],[7]
Fair Value 19.6 [4],[5] 22.6 [2],[7]
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC    
Fair Value $ 1,121.0 $ 987.3
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC, Member interest    
Shares (as a percent)   87.50%
Amortized Cost [8]   $ 0.0
Fair Value [8]   $ 0.0
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC, Membership interest    
Shares (as a percent) 87.50%  
Amortized Cost [6] $ 0.0  
Fair Value [6] $ 0.0  
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC, Subordinated certificates    
Coupon 11.75% [3] 8.21% [1]
Spread 8.00% [3] 8.00% [1]
Principal $ 269,806.0 [6],[15] $ 987.3 [8]
Amortized Cost 1,121.0 [6],[15] 987.3 [8]
Fair Value $ 1,121.0 [6],[15] 987.3 [8]
Investment, Identifier [Axis]: Shermco Intermediate Holdings, Inc., First lien senior secured revolving loan    
Coupon [3] 9.75%  
Spread [3] 3.50%  
Principal [5] $ 3.1  
Amortized Cost [5] 2.9  
Fair Value [5] 3.1  
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC    
Fair Value $ 8.8 $ 23.1
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, Class A preferred units    
Shares 50,000 50,000
Amortized Cost $ 5.0 [5] $ 5.0 [2]
Fair Value $ 3.1 [5] $ 0.4 [2]
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, Class C preferred units    
Shares 50,000 50,000
Amortized Cost $ 5.0 [5] $ 5.0 [2]
Fair Value $ 3.1 [5] $ 0.4 [2]
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, First lien senior secured loan    
Coupon 8.55% [3] 6.00% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 0.1 [4],[5] $ 19.2 [2],[7]
Amortized Cost 0.1 [4],[5] 19.1 [2],[7]
Fair Value $ 0.1 [4],[5] $ 19.1 [2],[7]
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, First lien senior secured revolving loan    
Coupon 10.25% [3] 7.25% [1]
Spread 4.00% [3] 4.00% [1]
Principal $ 0.2 [4],[5],[13] $ 1.1 [2],[7],[14]
Amortized Cost 0.2 [4],[5],[13] 1.1 [2],[7],[14]
Fair Value $ 0.2 [4],[5],[13] $ 1.1 [2],[7],[14]
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, First lien senior secured revolving loan 2    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [2],[7],[14]   $ 0.1
Amortized Cost [2],[7],[14]   0.1
Fair Value [2],[7],[14]   $ 0.1
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, Preferred units    
Shares 14,591 14,591
Amortized Cost $ 1.6 $ 1.6 [2]
Fair Value $ 2.3 $ 2.0 [2]
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co HoldCo, Inc., Common stock    
Shares   7,598,999
Amortized Cost [2]   $ 7.6
Fair Value [2]   $ 8.9
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co HoldCo, Inc., First lien senior secured loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [7]   $ 27.0
Amortized Cost [7]   27.0
Fair Value [7]   $ 27.0
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co HoldCo, Inc., First lien senior secured revolving loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 1.0
Amortized Cost [2],[7]   1.0
Fair Value [2],[7]   1.0
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., Common stock    
Shares 7,599,000  
Amortized Cost [5] $ 7.6  
Fair Value [5] $ 12.7  
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan    
Coupon [3] 9.68%  
Spread [3] 6.00%  
Principal [4],[5] $ 26.8  
Amortized Cost [4],[5] 26.8  
Fair Value [4],[5] $ 26.8  
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan 2    
Coupon [3] 9.68%  
Spread [3] 6.00%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured revolving loan    
Coupon [3] 9.63%  
Spread [3] 6.00%  
Principal [4] $ 2.8  
Amortized Cost [4] 2.8  
Fair Value [4] $ 2.8  
Investment, Identifier [Axis]: SilverBow Resources, Inc., Common stock    
Shares 1,015,215  
Amortized Cost [5],[6],[11] $ 28.8  
Fair Value [5],[6],[11] $ 27.3  
Investment, Identifier [Axis]: Singer Sewing Company, SVP-Singer Holdings, LLC and SVP-Singer Holdings LP    
Fair Value   $ 0.0
Investment, Identifier [Axis]: SiroMed Physician Services, Inc. and SiroMed Equity Holdings, LLC, Common units    
Shares 684,854 684,854
Amortized Cost $ 4.8 [5] $ 4.8 [2]
Fair Value $ 1.1 [5] $ 0.7 [2]
Investment, Identifier [Axis]: SiroMed Physician Services, Inc. and SiroMed Equity Holdings, LLC, First lien senior secured loan    
Coupon 8.43% [3] 5.75% [1]
Spread 4.75% [3] 4.75% [1]
Principal $ 10.3 [4],[5] $ 11.5 [7]
Amortized Cost 10.3 [4],[5] 11.5 [7]
Fair Value $ 10.3 [4],[5] $ 9.9 [7]
Investment, Identifier [Axis]: Smarsh Inc. and Skywalker TopCo, LLC, Common units    
Shares 1,742,623  
Amortized Cost [5] $ 6.3  
Fair Value [5] $ 8.4  
Investment, Identifier [Axis]: Smarsh Inc. and Skywalker TopCo, LLC, First lien senior secured loan    
Coupon [3] 10.05%  
Spread [3] 6.50%  
Principal [4],[5] $ 10.6  
Amortized Cost [4],[5] 10.6  
Fair Value [4],[5] $ 10.5  
Investment, Identifier [Axis]: Smarsh Inc., MobileGuard, LLC, Actiance, Inc. and Skywalker TopCo, LLC, Common units    
Shares   1,432,835
Amortized Cost [2]   $ 4.8
Fair Value [2]   $ 5.1
Investment, Identifier [Axis]: Smarsh Inc., MobileGuard, LLC, Actiance, Inc. and Skywalker TopCo, LLC, First lien senior secured loan    
Coupon [1]   9.25%
Spread [1]   8.25%
Principal [2],[7]   $ 13.3
Amortized Cost [2],[7]   13.3
Fair Value [2],[7]   $ 13.3
Investment, Identifier [Axis]: SocialFlow, Inc., Warrant to purchase shares of Series C preferred stock    
Shares   215,331
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: SocialFlow, Inc., Warrant to purchase up to 215,331 shares of Series C preferred stock    
Shares 215,331  
Amortized Cost $ 0.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: Sophia, L.P., Second lien senior secured loan    
Coupon 11.67% [3] 9.00% [1]
Spread 8.00% [3] 8.00% [1]
Principal $ 105.9 [4],[5] $ 105.9 [2],[7]
Amortized Cost 105.9 [4],[5] 105.9 [2],[7]
Fair Value $ 103.8 [4],[5] $ 105.9 [2],[7]
Investment, Identifier [Axis]: SoundCloud Limited, Common stock    
Shares 73,422 73,422
Amortized Cost $ 0.4 [5],[6] $ 0.4 [2],[8]
Fair Value $ 0.7 [5],[6] $ 0.7 [2],[8]
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp, First lien senior secured loan    
Coupon [3] 9.38%  
Spread [3] 6.50%  
Principal [4],[5] $ 11.4  
Amortized Cost [4],[5] 11.4  
Fair Value [4],[5] $ 11.2  
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp, Limited partner interests    
Shares 982  
Amortized Cost [5] $ 10.0  
Fair Value [5] $ 9.8  
Investment, Identifier [Axis]: Spring Insurance Solutions, LLC, First lien senior secured loan    
Coupon 10.05% [3] 7.50% [1]
Spread 6.50% [3] 6.50% [1]
Principal $ 22.1 [4],[5] $ 19.7 [7]
Amortized Cost 22.1 [4],[5] 19.7 [7]
Fair Value $ 19.7 [4],[5] $ 18.9 [7]
Investment, Identifier [Axis]: Stamps.com Inc., First lien senior secured loan    
Coupon 8.38% [3] 6.50% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 147.1 [4],[5] $ 197.9 [2],[7]
Amortized Cost 147.1 [4],[5] 197.9 [2],[7]
Fair Value 142.7 [4],[5] 193.9 [2],[7]
Investment, Identifier [Axis]: Startec Equity, LLC    
Fair Value 0.0 0.0
Investment, Identifier [Axis]: Startec Equity, LLC, Member interest    
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    
Coupon 9.10% [3] 7.75% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 52.3 [4],[5],[6] $ 50.5 [7],[8]
Amortized Cost 52.3 [4],[5],[6] 50.5 [7],[8]
Fair Value $ 52.3 [4],[5],[6] $ 50.5 [7],[8]
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 2    
Coupon 9.85% [3] 9.00% [1]
Spread 6.75% [3] 5.75% [1]
Principal $ 4.0 [4],[5],[6] $ 0.8 [2],[7],[8]
Amortized Cost 4.0 [4],[5],[6] 0.8 [2],[7],[8]
Fair Value $ 4.0 [4],[5],[6] $ 0.8 [2],[7],[8]
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan 3    
Coupon [3] 9.96%  
Spread [3] 6.75%  
Principal [4],[5],[6] $ 1.7  
Amortized Cost [4],[5],[6] 1.7  
Fair Value [4],[5],[6] $ 1.7  
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Limited partnership interests    
Shares 614,950 614,950
Amortized Cost $ 6.2 [5],[6] $ 6.2 [2],[8]
Fair Value $ 7.2 [5],[6] $ 6.8 [2],[8]
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Second lien senior secured loan    
Coupon 9.33% [3] 7.50% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 42.8 [4],[5] $ 42.8 [2],[7]
Amortized Cost 42.8 [4],[5] 42.8 [2],[7]
Fair Value $ 41.1 [4],[5] $ 42.8 [2],[7]
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Second lien senior secured loan 2    
Coupon [3] 9.33%  
Spread [3] 6.75%  
Principal [4],[5] $ 10.3  
Amortized Cost [4],[5] 10.3  
Fair Value [4],[5] $ 9.9  
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class A redeemable shares    
Shares 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [2],[8]
Fair Value $ 1.8 [5],[6] $ 1.5 [2],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class B redeemable shares    
Shares 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [2],[8]
Fair Value $ 1.8 [5],[6] $ 1.5 [2],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class C redeemable shares    
Shares 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [2],[8]
Fair Value $ 1.8 [5],[6] $ 1.5 [2],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class D redeemable shares    
Shares 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [2],[8]
Fair Value $ 1.8 [5],[6] $ 1.5 [2],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class E redeemable shares    
Shares 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [2],[8]
Fair Value $ 1.8 [5],[6] $ 1.5 [2],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class F redeemable shares    
Shares 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [2],[8]
Fair Value $ 1.8 [5],[6] $ 1.5 [2],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class G redeemable shares    
Shares 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [2],[8]
Fair Value $ 1.8 [5],[6] $ 1.5 [2],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class H redeemable shares    
Shares 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [2],[8]
Fair Value $ 1.8 [5],[6] $ 1.5 [2],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class I redeemable shares    
Shares 3,297,791 3,297,791
Amortized Cost $ 1.6 [5],[6] $ 1.6 [2],[8]
Fair Value $ 1.8 [5],[6] $ 1.5 [2],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., First lien senior secured loan    
Coupon 3.75% [3] 3.88% [1]
Spread [1]   3.75%
Principal $ 60.5 [5],[6] $ 70.2 [2],[8]
Amortized Cost 73.6 [5],[6] 73.6 [2],[8]
Fair Value $ 60.5 [5],[6] $ 70.3 [2],[8]
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Ordinary shares    
Shares 3,958 3,958
Amortized Cost $ 0.0 [5],[6] $ 0.0 [2],[8]
Fair Value $ 0.0 [5],[6] $ 0.0 [2],[8]
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, Class A units    
Shares 79,687 74,896
Amortized Cost $ 8.0 [5] $ 7.5 [2]
Fair Value $ 9.3 [5] $ 9.2 [2]
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured loan    
Coupon 8.57% [3] 6.50% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 43.3 [4],[5] $ 17.4 [2],[7]
Amortized Cost 43.3 [4],[5] 17.4 [2],[7]
Fair Value $ 42.0 [4],[5] $ 17.2 [2],[7]
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured loan 2    
Coupon 8.56% [3] 6.50% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 15.3 [4],[5] $ 74.4 [2],[7]
Amortized Cost 15.3 [4],[5] 74.4 [2],[7]
Fair Value $ 14.9 [4],[5] 73.7 [2],[7]
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured revolving loan    
Coupon [3] 11.00%  
Spread [3] 4.75%  
Principal [4],[5],[13] $ 1.0  
Amortized Cost [4],[5],[13] 1.0  
Fair Value [4],[5],[13] 1.0  
Investment, Identifier [Axis]: Sundance Energy Inc.    
Fair Value $ 0.0 $ 68.6
Investment, Identifier [Axis]: Sundance Energy Inc., Common stock    
Shares   157,970
Amortized Cost [2]   $ 69.8
Fair Value [2]   $ 68.6
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured loan    
Coupon 8.54% [3] 7.75% [1]
Spread 6.25% [3] 6.75% [1]
Principal $ 15.4 [4],[5] $ 15.4 [2],[7]
Amortized Cost 15.2 [4],[5] 15.2 [2],[7]
Fair Value $ 15.3 [4],[5] $ 15.3 [2],[7]
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured revolving loan    
Coupon 9.40% [3] 7.75% [1]
Spread 6.25% [3] 6.75% [1]
Principal $ 2.0 [4],[5] $ 0.9 [2],[7]
Amortized Cost 2.0 [4],[5] 0.8 [2],[7]
Fair Value 2.0 [4],[5] $ 0.9 [2],[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    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: Sunrun Atlas Depositor 2019-2, LLC and Sunrun Atlas Holdings 2019-2, LLC, First lien senior secured loan    
Coupon 3.61% [3] 3.61% [1]
Principal $ 0.1 [5] $ 0.1 [2]
Amortized Cost 0.1 [5] 0.1 [2]
Fair Value $ 0.1 [5] $ 0.1 [2]
Investment, Identifier [Axis]: Sunrun Atlas Depositor 2019-2, LLC and Sunrun Atlas Holdings 2019-2, LLC, Senior subordinated loan    
Coupon 9.53% [3] 8.75% [1]
Coupon, PIK 4.00% [3] 4.00% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 146.3 [4],[5] $ 142.5 [2],[7]
Amortized Cost 146.3 [4],[5] 142.5 [2],[7]
Fair Value $ 136.1 [4],[5] $ 142.5 [2],[7]
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC, Senior subordinated revolving loan    
Coupon [3] 6.29%  
Spread [3] 3.50%  
Principal [5],[6] $ 44.9  
Amortized Cost [5],[6] 44.9  
Fair Value [5],[6] $ 44.9  
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC, Senior subordinated revolving loan 2    
Coupon [3] 10.66%  
Spread [3] 7.88%  
Principal [5],[6] $ 29.8  
Amortized Cost [5],[6] 29.8  
Fair Value [5],[6] $ 29.8  
Investment, Identifier [Axis]: Sunrun Xanadu Issuer 2019-1, LLC and Sunrun Xanadu Holdings 2019-1, LLC, First lien senior secured loan    
Coupon 3.98% [3] 3.98% [1]
Principal $ 0.4 [5] $ 0.4 [2]
Amortized Cost [2]   0.4
Fair Value $ 0.3 [5] $ 0.4 [2]
Investment, Identifier [Axis]: Sunrun Xanadu Issuer 2019-1, LLC and Sunrun Xanadu Holdings 2019-1, LLC, Senior subordinated loan    
Coupon 10.43% [3] 8.75% [1]
Coupon, PIK 2.77% [3] 2.77% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 71.3 [4],[5] $ 69.3
Amortized Cost 71.3 [4],[5] 69.3
Fair Value   $ 69.3
Investment, Identifier [Axis]: Sunrun Xanadu Issuer 2019-1, LLC and gSunrun Xanadu Holdings 2019-1, LLC, First lien senior secured loan    
Amortized Cost [5] 0.4  
Investment, Identifier [Axis]: Sunrun Xanadu Issuer 2019-1, LLC and gSunrun Xanadu Holdings 2019-1, LLC, Senior subordinated loan    
Fair Value [4],[5] $ 67.1  
Investment, Identifier [Axis]: Symplr Softwagre Inc. and Symplr Software Intermediate Holdings, Inc., First lien senior secured loan    
Spread [3] 4.50%  
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., First lien senior secured loan    
Coupon [3] 7.63%  
Principal [4],[5] $ 12.4  
Amortized Cost [4],[5] 12.4  
Fair Value [4],[5] $ 11.8  
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., First lien senior secured revolving loan    
Coupon [3] 9.00%  
Spread [3] 2.75%  
Principal [5] $ 3.0  
Amortized Cost [5] 3.0  
Fair Value [5] $ 2.9  
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Second lien senior secured loan    
Coupon 9.93% [3] 8.63% [1]
Spread 7.88% [3] 7.88% [1]
Principal $ 76.2 [4],[5] $ 69.9 [2],[7]
Amortized Cost 76.2 [4],[5] 69.9 [2],[7]
Fair Value $ 72.4 [4],[5] $ 69.9 [2],[7]
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Series C-1 preferred shares    
Coupon, PIK 11.00% [3] 11.00% [1]
Shares 75,939 75,939
Amortized Cost $ 92.3 [5] $ 85.0 [2]
Fair Value $ 84.0 [5] $ 85.0 [2]
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Series C-2 preferred shares    
Coupon, PIK 11.00% [3] 11.00% [1]
Shares 40,115 40,115
Amortized Cost $ 46.2 [5] $ 42.6 [2]
Fair Value $ 42.0 [5] $ 42.6 [2]
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Series C-3 preferred shares    
Coupon, PIK 11.00% [3] 11.00% [1]
Shares 16,201 16,201
Amortized Cost $ 18.0 [5] $ 16.6 [2]
Fair Value $ 16.4 [5] $ 16.6 [2]
Investment, Identifier [Axis]: Synergy HomeCare Franchising, LLC and NP/Synergy Holdings, LLC, Common units    
Shares 550 550
Amortized Cost $ 0.5 $ 0.5
Fair Value $ 0.9 $ 1.0
Investment, Identifier [Axis]: Synergy HomeCare Franchising, LLC and NP/Synergy Holdings, LLC, First lien senior secured loan    
Coupon 9.42% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 13.1 [4],[5] $ 15.3 [7]
Amortized Cost 13.1 [4],[5] 15.3 [7]
Fair Value $ 13.1 [4],[5] $ 15.3 [7]
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan    
Coupon [1]   6.75%
Spread [1]   5.75%
Principal [2],[7]   $ 0.1
Amortized Cost [2],[7]   0.1
Fair Value [2],[7]   $ 0.1
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 1    
Coupon [3] 8.45%  
Spread [3] 6.00%  
Principal [4],[5] $ 1.6  
Amortized Cost [4],[5] 1.6  
Fair Value [4],[5] $ 1.6  
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 2    
Coupon 8.02% [3] 6.75% [1]
Spread 6.00% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 0.1 [2],[7]
Amortized Cost 0.1 [4],[5] 0.1 [2],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [2],[7]
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 3    
Coupon 9.31% [3] 6.75% [1]
Spread 6.00% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 0.1 [2],[7]
Amortized Cost 0.1 [4],[5] 0.1 [2],[7]
Fair Value $ 0.1 [4],[5] $ 0.1 [2],[7]
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 4    
Coupon 7.57% [3] 6.75% [1]
Spread 6.00% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 8.3 [2],[7]
Amortized Cost 0.1 [4],[5] 8.3 [2],[7]
Fair Value 0.1 [4],[5] $ 8.3 [2],[7]
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured revolving loan    
Coupon [1]   6.75%
Spread [1]   5.75%
Principal [2],[7],[14]   $ 0.8
Amortized Cost 0.0 [15] 0.8 [2],[7],[14]
Fair Value $ 0.0 [15] $ 0.8 [2],[7],[14]
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [7]   $ 6.6
Amortized Cost [7]   6.6
Fair Value [7]   $ 6.6
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan    
Coupon [3] 9.18%  
Spread [3] 5.50%  
Principal [4],[5] $ 34.6  
Amortized Cost [4],[5] 34.6  
Fair Value [4],[5] $ 34.2  
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 2    
Coupon 9.17% [3] 6.50% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 6.5 [4],[5] $ 4.0 [2],[7]
Amortized Cost 6.5 [4],[5] 4.0 [2],[7]
Fair Value $ 6.5 [4],[5] $ 4.0 [2],[7]
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 3    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [7]   $ 34.8
Amortized Cost [7]   34.8
Fair Value [7]   $ 34.8
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured revolving loan    
Coupon [3] 8.09%  
Spread [3] 5.50%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan    
Coupon 8.87% [3] 6.25% [1]
Spread 5.75% [3] 5.50% [1]
Principal $ 14.9 [4],[5] $ 0.6 [2],[7]
Amortized Cost 14.9 [4],[5] 0.6 [2],[7]
Fair Value $ 14.9 [4],[5] $ 0.6 [2],[7]
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 2    
Coupon 8.62% [3] 6.75% [1]
Spread 5.50% [3] 5.75% [1]
Principal $ 6.5 [4],[5] $ 0.1 [2],[7]
Amortized Cost 6.5 [4],[5] 0.1 [2],[7]
Fair Value $ 6.5 [4],[5] $ 0.1 [2],[7]
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 3    
Coupon 8.87% [3] 6.50% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 23.2 [2],[7]
Amortized Cost 0.1 [4],[5] 23.2 [2],[7]
Fair Value 0.1 [4],[5] $ 23.2 [2],[7]
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 4    
Coupon [1]   6.50%
Spread [1]   5.75%
Principal [7]   $ 14.9
Amortized Cost [7]   14.9
Fair Value [7]   $ 14.9
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., Class A-2 units    
Shares 4,849  
Amortized Cost $ 4.8  
Fair Value $ 5.4  
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured loan    
Coupon [3] 9.23%  
Spread [3] 5.50%  
Principal [4] $ 35.2  
Amortized Cost [4] 35.2  
Fair Value [4] $ 34.9  
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    
Shares 37,020 37,020
Amortized Cost $ 3.8 $ 3.8
Fair Value $ 3.4 $ 2.0
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 loan    
Coupon 8.92% [3] 6.25% [1]
Coupon, PIK 0.50% [3] 0.50% [1]
Spread 4.75% [3] 5.25% [1]
Principal $ 1.4 [4],[5] $ 1.1 [2],[7]
Amortized Cost 1.4 [4],[5] 1.1 [2],[7]
Fair Value $ 1.4 [4],[5] $ 1.1 [2],[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    
Coupon 8.92% [3] 6.75% [1]
Coupon, PIK 0.50% [3] 0.50% [1]
Spread 4.75% [3] 5.75% [1]
Principal $ 0.8 [4],[5] $ 0.5 [2],[7]
Amortized Cost 0.8 [4],[5] 0.5 [2],[7]
Fair Value $ 0.8 [4],[5] $ 0.5 [2],[7]
Investment, Identifier [Axis]: Teasdale Foods, Inc. and Familia Group Holdings Inc., First lien senior secured loan    
Coupon 9.88% [3] 8.00% [1]
Coupon, PIK 0.40% [3] 0.40% [1]
Spread 7.00% [3] 7.00% [1]
Principal $ 75.8 [4],[5] $ 78.3 [2],[7]
Amortized Cost 75.8 [4],[5] 78.3 [2],[7]
Fair Value $ 65.1 [4],[5] $ 73.6 [2],[7]
Investment, Identifier [Axis]: Teasdale Foods, Inc. and Familia Group Holdings Inc., Warrant to purchase shares of common stock    
Shares   57,827
Amortized Cost [2]   $ 0.0
Fair Value [2]   0.0
Investment, Identifier [Axis]: Teasdale Foods, Inc. and Familia Group Holdings Inc., Warrant to purchase up to 57,827 shares of common stock    
Shares 57,827  
Amortized Cost $ 0.0  
Fair Value $ 0.0  
Investment, Identifier [Axis]: Teligent, Inc, Second lien senior secured loan    
Principal [2],[10]   8.8
Amortized Cost [2],[10]   8.1
Fair Value [2],[10]   8.8
Investment, Identifier [Axis]: Teligent, Inc, Second lien senior secured loan 2    
Principal [2],[10]   1.4
Amortized Cost [2],[10]   1.3
Fair Value [2],[10]   0.5
Investment, Identifier [Axis]: Teligent, Inc, Second lien senior secured loan 3    
Principal [2],[10]   77.8
Amortized Cost [2],[10]   67.6
Fair Value [2],[10]   $ 29.5
Investment, Identifier [Axis]: Teligent, Inc, Second lien senior secured loan 3, Secured borrowing    
Coupon   14.50%
Investment, Identifier [Axis]: Teligent, Inc, Series D preferred stock    
Shares   77,725
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Teligent, Inc, Warrant to purchase shares of common stock    
Shares   490,492
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Teligent, Inc, Warrant to purchase shares of common stock 2    
Shares   122,548
Amortized Cost [2]   $ 0.0
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Tempus Labs, Inc., First lien senior secured loan    
Coupon [3] 10.49%  
Spread [3] 7.00%  
Principal [4],[5] $ 71.4  
Amortized Cost [4],[5] 71.4  
Fair Value [4],[5] $ 69.6  
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan    
Coupon 9.27% [3] 6.60% [1]
Spread 5.60% [3] 5.60% [1]
Principal $ 5.0 [4],[5] $ 5.1 [7]
Amortized Cost 5.0 [4],[5] 5.0 [7]
Fair Value $ 5.0 [4],[5] $ 5.1 [7]
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 2    
Coupon 7.85% [3] 6.60% [1]
Spread 5.60% [3] 5.60% [1]
Principal $ 2.1 [4],[5] $ 2.1 [7]
Amortized Cost 2.1 [4],[5] 2.1 [7]
Fair Value $ 2.1 [4],[5] $ 2.1 [7]
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 3    
Coupon 9.27% [3] 6.60% [1]
Spread 5.60% [3] 5.60% [1]
Principal $ 1.8 [4],[5] $ 1.8 [7]
Amortized Cost 1.8 [4],[5] 1.8 [7]
Fair Value $ 1.8 [4],[5] $ 1.8 [7]
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost [16]   $ 0.0
Fair Value [16]   $ 0.0
Investment, Identifier [Axis]: The Alaska Club Partners, LLC, Athletic Club Partners LLC and The Alaska Club, Inc., First lien senior secured loan    
Coupon 12.75% [3] 10.25% [1]
Coupon, PIK 2.00% [3] 2.00% [1]
Spread 6.50% [3] 7.00% [1]
Principal $ 12.6 [4],[5] $ 15.5 [2],[7]
Amortized Cost 12.6 [4],[5] 15.5 [2],[7]
Fair Value $ 12.6 [4],[5] $ 14.1 [2],[7]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, Class A units    
Shares 5,667,160 4,897,000
Amortized Cost $ 5.7 $ 4.9
Fair Value $ 8.3 $ 4.9
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan    
Coupon 8.49% [3] 6.75% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 28.9 [4],[5] $ 47.2 [2],[7]
Amortized Cost 28.9 [4],[5] 47.2 [2],[7]
Fair Value $ 28.6 [4],[5] $ 46.7 [2],[7]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan 2    
Coupon [3] 9.57%  
Spread [3] 6.00%  
Principal [4],[5] $ 11.5  
Amortized Cost [4],[5] 11.5  
Fair Value [4],[5] $ 11.4  
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan    
Coupon 11.25% [3] 8.25% [1]
Spread 5.00% [3] 5.00% [1]
Principal $ 5.4 [4],[5] $ 2.0 [2],[7]
Amortized Cost 5.4 [4],[5] 2.0 [2],[7]
Fair Value $ 5.4 [4],[5] $ 2.0 [2],[7]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan 2    
Coupon [3] 9.15%  
Spread [3] 6.00%  
Principal [4],[5] $ 4.6  
Amortized Cost [4],[5] 4.6  
Fair Value [4],[5] $ 4.6  
Investment, Identifier [Axis]: The Edelman Financial Center, LLC, Second lien senior secured loan    
Coupon [3] 9.87%  
Spread [3] 6.75%  
Principal [5],[6] $ 5.4  
Amortized Cost [5],[6] 4.7  
Fair Value [5],[6] $ 4.8  
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, Common units    
Shares 7,199  
Amortized Cost [6] $ 0.0  
Fair Value [6] $ 0.0  
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, First lien senior secured loan    
Coupon [3] 8.41%  
Spread [3] 5.75%  
Principal [4],[5],[6] $ 3.3  
Amortized Cost [4],[5],[6] 3.3  
Fair Value [4],[5],[6] $ 3.3  
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, Senior subordinated loan    
Coupon, PIK [3] 12.00%  
Principal [5],[6] $ 2.9  
Amortized Cost [5],[6] 2.9  
Fair Value [5],[6] $ 2.8  
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC, Series A preferred units    
Shares 7,199  
Amortized Cost [5],[6] $ 7.2  
Fair Value [5],[6] $ 7.2  
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 10,744  
Amortized Cost [5] $ 11.3  
Fair Value [5] $ 11.3  
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 [3] 8.76%  
Coupon, PIK [3] 2.51%  
Spread [3] 6.25%  
Principal [4],[5] $ 212.0  
Amortized Cost [4],[5] 212.0  
Fair Value [4],[5] $ 207.7  
Investment, Identifier [Axis]: The Teaching Company Holdings, Inc., Common stock    
Shares 15,393 15,393
Amortized Cost $ 0.0 $ 0.0 [2]
Fair Value $ 0.0 $ 1.2 [2]
Investment, Identifier [Axis]: The Teaching Company Holdings, Inc., Preferred stock    
Shares 10,663 10,663
Amortized Cost $ 1.1 [5] $ 1.1 [2]
Fair Value $ 3.1 [5] $ 2.9 [2]
Investment, Identifier [Axis]: The Ultimate Software Group, Inc. and H&F Unite Partners, L.P., First lien senior secured revolving loan    
Coupon 6.87% [3] 0.00% [1]
Spread [3] 3.75%  
Principal [5],[6],[13] $ 0.9  
Amortized Cost 0.9 [5],[6],[13] $ 0.0 [8],[16]
Fair Value $ 0.9 [5],[6],[13] $ 0.0 [8],[16]
Investment, Identifier [Axis]: The Ultimate Software Group, Inc. and H&F Unite Partners, L.P., Limited partnership interests    
Shares 12,583,556 12,583,556
Amortized Cost [5],[6] $ 12.6  
Fair Value $ 13.5 [5],[6] $ 15.1 [2],[8]
Investment, Identifier [Axis]: The Ultimhate Software Group, Inc. and H&F Unite Partners, L.P., Limited partnership interests    
Amortized Cost [2],[8]   $ 12.6
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, Class A units    
Shares 1,443 1,443
Amortized Cost $ 1.6 $ 1.6
Fair Value $ 2.4 $ 1.9
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, Class A units 2    
Shares 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    
Shares 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, Class B units 2    
Shares 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, First lien senior secured loan    
Coupon 8.17% [3] 5.75% [1]
Spread 4.50% [3] 4.75% [1]
Principal $ 37.5 [4],[5] $ 37.8 [7]
Amortized Cost 37.5 [4],[5] 37.8 [7]
Fair Value $ 37.1 [4],[5] $ 37.8 [7]
Investment, Identifier [Axis]: Therapy Brands Holdings LLC, Second lien senior secured loan    
Coupon 9.74% [3] 7.50% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 20.5 [4],[5] $ 20.5 [2],[7]
Amortized Cost 20.3 [4],[5] 20.3 [2],[7]
Fair Value $ 19.4 [4],[5] $ 20.5 [2],[7]
Investment, Identifier [Axis]: Thermostat Purchaser III, Inc., Second lien senior secured loan    
Coupon 10.32% [3] 8.00% [1]
Spread 7.25% [3] 7.25% [1]
Principal $ 23.0 [4],[5] $ 23.0 [2],[7]
Amortized Cost 23.0 [4],[5] 23.0 [2],[7]
Fair Value $ 21.8 [4],[5] 22.8 [2],[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] 8.05%  
Spread [3] 4.50%  
Principal [4],[5],[11] $ 10.9  
Amortized Cost [4],[5],[11] 10.4  
Fair Value [4],[5],[11] $ 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., Limited partnership interests    
Shares 12,250,000  
Amortized Cost [5] $ 12.3  
Fair Value [5] $ 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., Second lien senior secured loan    
Coupon [3] 12.05%  
Spread [3] 8.50%  
Principal [4],[5] $ 85.3  
Amortized Cost [4],[5] 83.9  
Fair Value [4],[5] $ 70.8  
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Senior secured notes    
Coupon [3] 6.50%  
Principal [5],[11] $ 88.9  
Amortized Cost [5],[11] 86.4  
Fair Value [5],[11] $ 75.0  
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] 15.55%  
Spread [3] 12.00%  
Shares 141,928  
Amortized Cost [5] $ 137.8  
Fair Value [5] 134.8  
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc.    
Fair Value $ 3.3 $ 3.9
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., Common stock    
Shares 861,000 861,000
Amortized Cost $ 6.0 $ 6.0 [2]
Fair Value $ 0.0 $ 0.4 [2]
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., First lien senior secured loan    
Coupon 9.12% [3] 7.00% [1]
Spread 6.00% [3] 6.00% [1]
Principal $ 2.2 [4],[5] $ 2.2 [2],[7]
Amortized Cost 2.2 [4],[5] 2.2 [2],[7]
Fair Value $ 1.8 [4],[5] $ 1.9 [2],[7]
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., First lien senior secured loan 2    
Coupon 7.12% [3] 5.00% [1]
Spread 4.00% [3] 4.00% [1]
Principal $ 1.6 [4],[5] $ 1.6 [2],[7]
Amortized Cost 1.6 [4],[5] 1.6 [2],[7]
Fair Value $ 1.5 [4],[5] $ 1.6 [2],[7]
Investment, Identifier [Axis]: Touchstone Acquisition, Inc. and Touchstone Holding, L.P., Class A preferred units    
Coupon, PIK 8.00% [3] 8.00% [1]
Shares 2,149 2,149
Amortized Cost $ 2.9 [5] $ 2.7 [2]
Fair Value $ 2.1 [5] $ 2.8 [2]
Investment, Identifier [Axis]: Triton Water Holdings, Inc., First lien senior secured loan    
Coupon 7.17% [3] 4.00% [1]
Spread 3.50% [3] 3.50% [1]
Principal $ 1.0 [4],[5],[11] $ 1.0 [2],[7],[12]
Amortized Cost 1.0 [4],[5],[11] 1.0 [2],[7],[12]
Fair Value $ 0.9 [4],[5],[11] $ 1.0 [2],[7],[12]
Investment, Identifier [Axis]: Triton Water Holdings, Inc., Senior subordinated loan    
Coupon 6.25% [3] 6.25% [1]
Principal $ 0.1 [5],[11] $ 0.1 [2],[12]
Amortized Cost 0.1 [5],[11] 0.1 [2],[12]
Fair Value $ 0.1 [5],[11] $ 0.1 [2],[12]
Investment, Identifier [Axis]: Tyden Group Holding Corp., Common stock    
Shares   5,521,203
Amortized Cost [8]   $ 2.0
Fair Value [8]   $ 3.9
Investment, Identifier [Axis]: Tyden Group Holding Corp., Preferred stock    
Shares   46,276
Amortized Cost [8]   $ 0.4
Fair Value [8]   $ 0.4
Investment, Identifier [Axis]: U.S. Anesthesia Partners, Inc. & U.S. Anesthesia Partners Holdings, Inc., Common stock    
Shares 3,671,429 3,671,429
Amortized Cost $ 12.9 [5] $ 12.9 [2]
Fair Value $ 14.4 [5] $ 12.9 [2]
Investment, Identifier [Axis]: U.S. Anesthesia Partners, Inc. & U.S. Anesthesia Partners Holdings, Inc., Second lien senior secured loan    
Coupon 10.06% [3] 8.00% [1]
Spread 7.50% [3] 7.50% [1]
Principal $ 147.8 [4],[5] $ 147.8 [2],[7]
Amortized Cost 147.8 [4],[5] 147.8 [2],[7]
Fair Value $ 143.3 [4],[5] $ 146.3 [2],[7]
Investment, Identifier [Axis]: US Salt Investors, LLC and Emerald Lake Pearl Acquisition-A, L.P., First lien senior secured loan    
Coupon 9.17% [3] 6.25% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 26.4 [4],[5] $ 40.1 [2],[7]
Amortized Cost 26.4 [4],[5] 40.1 [2],[7]
Fair Value $ 25.4 [4],[5] $ 39.7 [2],[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 [2]
Fair Value $ 0.5 [5] $ 0.8 [2]
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC, First lien senior secured loan    
Coupon [3] 8.07%  
Spread [3] 5.00%  
Principal [4],[5] $ 1.0  
Amortized Cost [4],[5] 1.0  
Fair Value [4],[5] $ 1.0  
Investment, Identifier [Axis]: VCP-EDC Co-Invest, LLC, Membership units    
Shares 2,970,000 2,970,000
Amortized Cost $ 2.8 $ 2.8
Fair Value $ 3.5 $ 0.4
Investment, Identifier [Axis]: VLS Recovery Services, LLC, First lien senior secured loan    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [2],[7]   $ 8.8
Amortized Cost [2],[7]   8.8
Fair Value [2],[7]   $ 8.8
Investment, Identifier [Axis]: VLS Recovery Services, LLC, First lien senior secured loan 2    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [2],[7]   $ 5.2
Amortized Cost [2],[7]   5.2
Fair Value [2],[7]   $ 5.2
Investment, Identifier [Axis]: VLS Recovery Services, LLC, First lien senior secured revolving loan    
Coupon [1]   6.50%
Spread [1]   5.50%
Principal [2],[7],[14]   $ 1.3
Amortized Cost [2],[7],[14]   1.3
Fair Value [2],[7],[14]   $ 1.3
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., Class A-2 units    
Shares 7,524 7,524
Amortized Cost $ 7.5 [5] $ 7.5 [2]
Fair Value $ 7.4 [5] $ 7.5 [2]
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan    
Coupon 9.13% [3] 6.75% [1]
Spread 6.25% [3] 5.75% [1]
Principal $ 3.3 [4],[5] $ 6.4 [2],[7]
Amortized Cost 3.3 [4],[5] 6.4 [2],[7]
Fair Value $ 3.3 [4],[5] 6.4 [2],[7]
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan 2    
Coupon [3] 9.37%  
Spread [3] 6.25%  
Principal [4],[5] $ 2.5  
Amortized Cost [4],[5] 2.5  
Fair Value [4],[5] $ 2.5  
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan 3    
Coupon [3] 8.57%  
Spread [3] 6.50%  
Principal [4] $ 0.5  
Amortized Cost [4] 0.5  
Fair Value [4] $ 0.5  
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured revolving loan    
Coupon [3] 11.50%  
Spread [3] 5.25%  
Principal [4],[13] $ 0.1  
Amortized Cost [4],[13] 0.1  
Fair Value [4],[13] 0.1  
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC    
Fair Value $ 107.0 $ 77.5
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, Class A units    
Shares 347,900 347,900
Amortized Cost $ 32.8 [5] $ 32.8 [2]
Fair Value $ 64.3 [5] $ 39.9 [2]
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan    
Coupon, PIK 12.06% [3] 11.00% [1]
Spread 9.50% [3] 9.50% [1]
Principal $ 27.3 [4],[5] $ 7.0 [2],[7]
Amortized Cost 27.3 [4],[5] 7.0 [2],[7]
Fair Value $ 27.3 [4],[5] $ 7.0 [2],[7]
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan 2    
Coupon, PIK 12.06% [3] 11.00% [1]
Spread 9.50% [3] 9.50% [1]
Principal $ 9.4 [4],[5] $ 5.5 [2],[7]
Amortized Cost 9.4 [4],[5] 5.5 [2],[7]
Fair Value $ 9.4 [4],[5] $ 5.5 [2],[7]
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan 3    
Coupon, PIK 12.06% [3] 11.00% [1]
Spread 9.50% [3] 9.50% [1]
Principal $ 6.0 [4],[5] $ 25.1 [2],[7]
Amortized Cost 6.0 [4],[5] 25.1 [2],[7]
Fair Value $ 6.0 [4],[5] $ 25.1 [2],[7]
Investment, Identifier [Axis]: VRC Companies, LLC, First lien senior secured loan    
Coupon [3] 8.42%  
Spread [3] 5.50%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: VRC Companies, LLC, First lien senior secured revolving loan    
Coupon [3] 10.75%  
Spread [3] 4.50%  
Principal [4] $ 0.8  
Amortized Cost [4] 0.6  
Fair Value [4] $ 0.8  
Investment, Identifier [Axis]: VRC Companies, LLC, Senior subordinated loan    
Coupon [3] 12.00%  
Coupon, PIK [3] 2.00%  
Principal [5] $ 5.0  
Amortized Cost [5] 5.1  
Fair Value [5] $ 5.0  
Investment, Identifier [Axis]: VSC Investors LLC, Membership interest    
Shares (as a percent) 1.95% 1.95%
Amortized Cost $ 0.2 [5],[6],[11] $ 0.3 [2],[8],[12]
Fair Value $ 0.5 [5],[6],[11] $ 0.6 [2],[8],[12]
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Class A units    
Shares 1,400 1,400
Amortized Cost $ 1.4 [5] $ 1.4 [2]
Fair Value $ 1.1 [5] $ 0.7 [2]
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, First lien senior secured loan    
Coupon [3] 6.62%  
Spread [3] 3.50%  
Principal [4],[5],[11] $ 9.7  
Amortized Cost [4],[5],[11] 9.1  
Fair Value [4],[5],[11] $ 9.0  
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan    
Coupon 11.37% [3] 9.25% [1]
Spread 8.25% [3] 8.25% [1]
Principal $ 122.7 [4],[5] $ 21.1 [2],[7]
Amortized Cost 122.7 [4],[5] 21.1 [2],[7]
Fair Value $ 121.5 [4],[5] $ 20.3 [2],[7]
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan 2    
Coupon 11.37% [3] 9.25% [1]
Spread 8.25% [3] 8.25% [1]
Principal $ 21.1 [4],[5] $ 122.7 [7]
Amortized Cost 21.1 [4],[5] 122.8 [7]
Fair Value $ 20.9 [4],[5] $ 117.9 [7]
Investment, Identifier [Axis]: Verista, Inc., First lien senior secured loan    
Coupon [3] 8.74%  
Spread [3] 6.00%  
Principal [4],[5] $ 0.8  
Amortized Cost [4],[5] 0.8  
Fair Value [4],[5] $ 0.8  
Investment, Identifier [Axis]: Verista, Inc., First lien senior secured revolving loan    
Coupon [3] 9.24%  
Spread [3] 6.00%  
Principal [4],[5] $ 1.1  
Amortized Cost [4],[5] 0.7  
Fair Value [4],[5] 1.1  
Investment, Identifier [Axis]: Verscend Holding Corp., First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: Vertice Pharma UK Parent Limited, Preferred shares    
Shares 40,662 40,662
Amortized Cost $ 0.0 [6] $ 0.3 [8]
Fair Value $ 0.0 [6] $ 0.0 [8]
Investment, Identifier [Axis]: Viant Medical Holdings, Inc., First lien senior secured loan    
Coupon [3] 6.87%  
Spread [3] 3.75%  
Principal [5],[11] $ 0.3  
Amortized Cost [5],[11] 0.3  
Fair Value [5],[11] $ 0.3  
Investment, Identifier [Axis]: Visual Edge Technology, Inc., First lien senior secured loan    
Coupon 10.07% [3] 9.75% [1]
Coupon, PIK 1.25% [3] 1.25% [1]
Spread 7.00% [3] 8.25% [1]
Principal $ 32.6 [4],[5] $ 32.5 [2],[7]
Amortized Cost 32.6 [4],[5] 32.5 [2],[7]
Fair Value 30.0 [4],[5] $ 30.9 [2],[7]
Investment, Identifier [Axis]: Visual Edge Technology, Inc., Senior subordinated loan    
Coupon, PIK [1]   12.50%
Principal 99.8 [5],[9] $ 88.6 [2]
Amortized Cost 87.5 [5],[9] 86.1 [2]
Fair Value $ 62.4 [5],[9] $ 79.7 [2]
Investment, Identifier [Axis]: Visual Edge Technology, Inc., Warrant to purchase shares of common stock    
Shares   10,358,572
Amortized Cost [2]   $ 3.9
Fair Value [2]   $ 0.0
Investment, Identifier [Axis]: Visual Edge Technology, Inc., Warrant to purchase up to 10,358,572 shares of common stock    
Shares 10,358,572  
Amortized Cost $ 3.9  
Fair Value $ 0.0  
Investment, Identifier [Axis]: WA Asset Management, LLC, First lien senior secured loan    
Coupon [3] 9.20%  
Spread [3] 5.50%  
Principal [4],[5],[6] $ 4.0  
Amortized Cost [4],[5],[6] 4.0  
Fair Value [4],[5],[6] $ 4.0  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, Common units    
Shares 33,293  
Amortized Cost $ 4.7  
Fair Value $ 4.8  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan    
Coupon [3] 9.95%  
Spread [3] 6.25%  
Principal [4],[5] $ 33.2  
Amortized Cost [4],[5] 33.2  
Fair Value [4],[5] $ 32.8  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 2    
Coupon [3] 9.95%  
Spread [3] 6.25%  
Principal [4],[5] $ 14.6  
Amortized Cost [4],[5] 14.6  
Fair Value [4],[5] $ 14.4  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 3    
Coupon [3] 9.95%  
Spread [3] 6.25%  
Principal [4],[5] $ 10.7  
Amortized Cost [4],[5] 10.7  
Fair Value [4],[5] $ 10.6  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 4    
Coupon [3] 9.95%  
Spread [3] 6.25%  
Principal [4],[5] $ 11.3  
Amortized Cost [4],[5] 11.3  
Fair Value [4],[5] $ 11.2  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 5    
Coupon [3] 9.95%  
Spread [3] 6.25%  
Principal [4],[5] $ 4.5  
Amortized Cost [4],[5] 4.5  
Fair Value [4],[5] $ 4.5  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 6    
Coupon [3] 9.80%  
Spread [3] 6.25%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan 7    
Coupon [3] 9.80%  
Spread [3] 6.25%  
Principal [4],[5] $ 0.1  
Amortized Cost [4],[5] 0.1  
Fair Value [4],[5] $ 0.1  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured revolving loan    
Coupon [3] 9.55%  
Spread [3] 6.25%  
Principal [4],[5],[13] $ 4.5  
Amortized Cost [4],[5],[13] 4.5  
Fair Value [4],[5],[13] $ 4.4  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 4.9
Amortized Cost [2],[7]   4.9
Fair Value [2],[7]   $ 4.9
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 2    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [7]   $ 33.4
Amortized Cost [7]   33.4
Fair Value [7]   $ 33.4
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 3    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [7]   $ 4.5
Amortized Cost [7]   4.5
Fair Value [7]   $ 4.5
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 4    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [7]   $ 11.4
Amortized Cost [7]   11.4
Fair Value [7]   $ 11.4
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 5    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [7]   $ 10.8
Amortized Cost [7]   10.8
Fair Value [7]   $ 10.8
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 6    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 9.0
Amortized Cost [2],[7]   9.0
Fair Value [2],[7]   $ 9.0
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured revolving loan    
Coupon [1]   7.00%
Spread [1]   6.00%
Principal [2],[7]   $ 1.5
Amortized Cost [2],[7]   1.5
Fair Value [2],[7]   $ 1.5
Investment, Identifier [Axis]: Walnut Parent, Inc., First lien senior secured loan    
Coupon 8.56% [3] 6.50% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 14.7 [4],[5] $ 14.9 [7]
Amortized Cost 14.7 [4],[5] 14.9 [7]
Fair Value $ 14.5 [4],[5] $ 14.9 [7]
Investment, Identifier [Axis]: Walnut Parent, Inc., First lien senior secured loan 2    
Coupon 8.56% [3] 6.50% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 0.1 [4],[5] $ 19.9 [2],[7]
Amortized Cost 0.1 [4],[5] 19.9 [2],[7]
Fair Value $ 0.1 [4],[5] $ 19.9 [2],[7]
Investment, Identifier [Axis]: Wand Newco 3, Inc., Second lien senior secured loan    
Coupon 10.37% [3] 7.43% [1]
Spread 7.25% [3] 7.25% [1]
Principal $ 182.6 [5] $ 180.2 [2]
Amortized Cost 180.8 [5] 178.2 [2]
Fair Value $ 178.9 [5] $ 180.2 [2]
Investment, Identifier [Axis]: Wash Encore Holdings, LLC, First lien senior secured loan    
Coupon 8.78% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 134.6 [4],[5] $ 135.6 [2],[7]
Amortized Cost 134.6 [4],[5] 135.6 [2],[7]
Fair Value $ 131.9 [4],[5] $ 134.2 [2],[7]
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC, Class A units    
Coupon, PIK 8.00% [3] 8.00% [1]
Shares 282,200 282,200
Amortized Cost $ 3.2 $ 3.0
Fair Value $ 2.9 $ 2.7
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC, First lien senior secured loan    
Coupon 9.17% [3] 6.25% [1]
Spread 5.50% [3] 5.25% [1]
Principal $ 19.3 [4],[5] $ 19.4 [7]
Amortized Cost 19.3 [4],[5] 19.4 [7]
Fair Value 19.3 [4],[5] $ 19.4 [7]
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC, First lien senior secured revolving loan    
Coupon [1]   0.00%
Amortized Cost 0.0 [15] $ 0.0 [16]
Fair Value $ 0.0 [15] $ 0.0 [16]
Investment, Identifier [Axis]: WebPT, Inc., First lien senior secured loan    
Coupon 9.82% [3] 7.75% [1]
Spread 6.75% [3] 6.75% [1]
Principal $ 48.1 [4],[5] $ 48.1 [2],[7]
Amortized Cost 48.1 [4],[5] 48.1 [2],[7]
Fair Value $ 48.1 [4],[5] $ 48.1 [2],[7]
Investment, Identifier [Axis]: WebPT, Inc., First lien senior secured revolving loan    
Coupon [3] 8.38%  
Spread [3] 6.75%  
Principal [4],[5] $ 0.2  
Amortized Cost [4],[5] 0.2  
Fair Value [4],[5] $ 0.2  
Investment, Identifier [Axis]: Wellness AcquisitionCo, Inc., First lien senior secured loan    
Coupon 8.62% [3] 6.50% [1]
Spread 5.50% [3] 5.50% [1]
Principal $ 0.1 [4],[5] $ 0.1 [2],[7]
Amortized Cost 0.1 [4],[5] 0.1 [2],[7]
Fair Value 0.1 [4],[5] $ 0.1 [2],[7]
Investment, Identifier [Axis]: Wellness AcquisitionCo, Inc., First lien senior secured revolving loan    
Amortized Cost [15] 0.0  
Fair Value [15] $ 0.0  
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan    
Coupon 9.30% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 18.0 [4],[5] $ 18.2 [7]
Amortized Cost 18.0 [4],[5] 18.2 [7]
Fair Value $ 18.0 [4],[5] $ 18.2 [7]
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 2    
Coupon 8.91% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 0.2 [4],[5] $ 9.5 [2],[7]
Amortized Cost 0.2 [4],[5] 9.5 [2],[7]
Fair Value $ 0.2 [4],[5] $ 9.5 [2],[7]
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 3    
Coupon [3] 9.38%  
Spread [3] 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    
Amortized Cost [15] 0.0  
Fair Value [15] $ 0.0  
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, Limited partnership interests    
Shares 17,655 17,655
Amortized Cost $ 1.8 [5] $ 1.8 [2]
Fair Value $ 4.7 [5] $ 2.8 [2]
Investment, Identifier [Axis]: Winebow Holdings, Inc. and The Vintner Group, Inc., First lien senior secured loan    
Coupon 9.37% [3] 7.25% [1]
Spread 6.25% [3] 6.25% [1]
Principal $ 28.1 [4],[5] $ 28.3 [7]
Amortized Cost 28.1 [4],[5] 28.3 [7]
Fair Value $ 27.8 [4],[5] $ 28.3 [7]
Investment, Identifier [Axis]: WorkWave Intermediate II, LLC, First lien senior secured loan    
Coupon [3] 10.90%  
Coupon, PIK [1]   8.00%
Spread 7.25% [3] 7.25% [1]
Principal $ 65.6 [4],[5] $ 61.6 [2],[7]
Amortized Cost 65.6 [4],[5] 61.6 [2],[7]
Fair Value $ 65.6 [4],[5] $ 61.6 [2],[7]
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, Class A units    
Shares 180,000 180,000
Amortized Cost $ 1.8 [5] $ 1.8 [2]
Fair Value $ 4.5 [5] $ 4.2 [2]
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, Class B units    
Shares 46,363 46,363.16
Amortized Cost $ 0.9 [5] $ 0.9 [2]
Fair Value $ 1.2 [5] $ 1.1 [2]
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured loan    
Coupon 8.87% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 37.1 [4] $ 16.3 [2],[7]
Amortized Cost 37.1 [4] 16.3 [2],[7]
Fair Value $ 36.7 [4] $ 16.1 [2],[7]
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured loan 2    
Coupon 8.87% [3] 6.75% [1]
Spread 5.75% [3] 5.75% [1]
Principal $ 0.1 [4],[5] $ 39.3 [2],[7]
Amortized Cost 0.1 [4],[5] 39.3 [2],[7]
Fair Value $ 0.1 [4],[5] $ 39.0 [2],[7]
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured revolving loan    
Coupon 11.00% [3] 6.75% [1]
Spread 4.75% [3] 5.75% [1]
Principal $ 0.2 [4] $ 1.1 [2],[7]
Amortized Cost 0.2 [4] 1.1 [2],[7]
Fair Value $ 0.2 [4] $ 1.1 [2],[7]
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured loan    
Coupon 7.96% [3] 6.25% [1]
Spread 5.75% [3] 5.50% [1]
Principal $ 8.2 [4],[5] $ 8.0 [2],[7]
Amortized Cost 8.2 [4],[5] 8.0 [2],[7]
Fair Value $ 8.1 [4],[5] $ 7.9 [2],[7]
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured loan 2    
Coupon [3] 8.97%  
Spread [3] 5.50%  
Principal [4],[5] $ 8.0  
Amortized Cost [4],[5] 8.0  
Fair Value [4],[5] $ 7.8  
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, First lien senior secured loan    
Coupon [3] 7.63%  
Spread [3] 4.75%  
Principal [4],[5] $ 1.4  
Amortized Cost [4],[5] 1.4  
Fair Value [4],[5] 1.4  
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, First lien senior secured revolving loan    
Amortized Cost [15] 0.0  
Fair Value [15] $ 0.0  
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, Series A units    
Shares 4,699  
Amortized Cost $ 4.7  
Fair Value $ 5.3  
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan    
Coupon [1]   9.00%
Spread [1]   7.50%
Principal [2],[7]   $ 56.0
Amortized Cost [2],[7]   56.0
Fair Value [2],[7]   $ 56.0
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 1    
Coupon [3] 10.36%  
Spread [3] 7.75%  
Principal [4],[5] $ 55.8  
Amortized Cost [4],[5] 55.8  
Fair Value [4],[5] $ 55.2  
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 2    
Coupon 10.36% [3] 9.00% [1]
Spread 7.75% [3] 7.50% [1]
Principal $ 56.0 [4],[5] $ 5.4 [2],[7]
Amortized Cost 56.0 [4],[5] 5.4 [2],[7]
Fair Value $ 55.4 [4],[5] $ 5.4 [2],[7]
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 3    
Coupon [3] 10.36%  
Spread [3] 7.75%  
Principal [4],[5] $ 24.3  
Amortized Cost [4],[5] 24.3  
Fair Value [4],[5] $ 24.1  
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 4    
Coupon [3] 10.36%  
Spread [3] 7.75%  
Principal [4],[5] $ 5.4  
Amortized Cost [4],[5] 5.4  
Fair Value [4],[5] $ 5.3  
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Limited partnership interest    
Shares 3,988,000 3,988,000
Amortized Cost $ 4.5 [5],[6] $ 4.5 [2],[8]
Fair Value $ 3.2 [5],[6] $ 5.4 [2],[8]
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Second lien senior secured loan    
Coupon [1]   8.50%
Spread [1]   8.00%
Principal [7]   $ 22.5
Amortized Cost [7]   22.0
Fair Value [7]   $ 22.4
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Second lien senior secured loan 1    
Coupon [3] 11.12%  
Spread [3] 8.00%  
Principal [4],[5] $ 30.6  
Amortized Cost [4],[5] 29.7  
Fair Value [4],[5] $ 29.1  
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Second lien senior secured loan 2    
Coupon 11.12% [3] 8.50% [1]
Spread 8.00% [3] 8.00% [1]
Principal $ 17.2 [4],[5] $ 30.6 [2],[7]
Amortized Cost 16.9 [4],[5] 29.6 [2],[7]
Fair Value $ 16.3 [4],[5] $ 30.6 [2],[7]
[1] Investments without an interest rate are non-income producing.
[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 facility (see Note 5).
[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 facility (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, 23% of the Company's total assets are represented by investments at fair value and other assets that are considered "non-qualifying assets" as of September 30, 2022.
[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, 16% 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, 2021.
[9] Loan was on non-accrual status as of September 30, 2022.
[10] Loan was on non-accrual status as of December 31, 2021.
[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 September 30, 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.
[14] As of December 31, 2021, 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 September 30, 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 December 31, 2021, 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 $79.3 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 $79.3 secured borrowing, at fair value, included in “secured borrowings” in the accompanying consolidated balance sheet. As of September 30, 2022, the interest rate in effect for the secured borrowing was 10.06%.
[18] The Company sold a participating interest of approximately $75.0 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 $73.2 secured borrowing, at fair value, included in “secured borrowings” in the accompanying consolidated balance sheet. As of December 31, 2021, the interest rate in effect for the secured borrowing was 8.50%.
[19] As of December 31, 2021, the Company was party to subscription agreements to fund equity investments in private equity investment partnerships as follows:
(in millions)
Company		Total private equity commitmentsLess: funded private equity commitmentsTotal unfunded private equity commitmentsLess: private equity commitments substantially at the discretion of the CompanyTotal net adjusted unfunded private equity commitments
PCG-Ares Sidecar Investment, L.P. and PCG-Ares Sidecar Investment II, L.P.$50.0 $(12.5)$37.5 $(37.5)$— 
European Capital UK SME Debt LP60.9 (55.1)5.8 (5.8)— 
$110.9 $(67.6)$43.3 $(43.3)$— 
[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 interest rate of this security, the Company is entitled to receive an additional interest amount of 2.00% on $46.9 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.
v3.22.2.2
CONSOLIDATED SCHEDULE OF INVESTMENTS - (Parenthetical)
€ in Millions, £ in Millions, $ in Millions, $ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
USD ($)
Rate
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
Rate
Sep. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Rate
Sep. 30, 2022
CAD ($)
Rate
Sep. 30, 2022
EUR (€)
Rate
Sep. 30, 2022
GBP (£)
Rate
Dec. 31, 2021
CAD ($)
Rate
Dec. 31, 2021
EUR (€)
Rate
Dec. 31, 2021
GBP (£)
Rate
Derivative Instruments Table [Abstract]                      
Derivative Asset, Counterparty Name [Extensible Enumeration] Royal Bank of Canada [Member]   Royal Bank of Canada [Member]   Truist Financial Corporation [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member] Royal Bank of Canada [Member] Truist Financial Corporation [Member] Truist Financial Corporation [Member] Truist Financial Corporation [Member]
Derivatives $ (40.0)   $ (40.0)   $ (12.0)            
Schedule of Investments [Line Items]                      
% of Net Assets 226.18%   226.18%   225.65% 226.18% 226.18% 226.18% 225.65% 225.65% 225.65%
% of Total Assets 97.00%   97.00%   96.00% 97.00% 97.00% 97.00% 96.00% 96.00% 96.00%
% of Total Assets, non-qualifying assets 23.00%   23.00%   16.00% 23.00% 23.00% 23.00% 16.00% 16.00% 16.00%
Coupon | Rate [1]         9.50%       9.50% 9.50% 9.50%
Secured borrowings $ 79.0   $ 79.0   $ 74.0            
Net unrealized gain (loss) for federal tax purposes (500.0)   (500.0)   100.0            
Tax cost basis 21,300.0   21,300.0   19,900.0            
Aggregate gross unrealized loss for federal tax purposes 1,300.0   1,300.0   700.0            
Aggregate gross unrealized gain for federal tax purposes 800.0   800.0   800.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 21,338.5   21,338.5   20,009.5            
Revolving and delayed draw loan commitments                      
Schedule of Investments [Line Items]                      
Other commitment 3,205.0   3,205.0   2,733.0            
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3,205.4   3,205.4   2,732.5            
Less: funded commitments (520.3)   (520.3)   (352.3)            
Total unfunded commitments 2,685.1   2,685.1   2,380.2            
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   (3.9)            
Total net adjusted unfunded revolving and delayed draw commitments 2,685.1   2,685.1   2,376.3            
Private equity commitments                      
Schedule of Investments [Line Items]                      
Other commitment 116.0   116.0   111.0            
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 115.8   115.8   110.9            
Less: funded commitments (65.6)   (65.6)   (67.6)            
Total unfunded commitments 50.2   50.2   43.3            
Less: commitments substantially at discretion of the Company (50.2)   (50.2)   (43.3)            
Total net adjusted unfunded revolving and delayed draw commitments 0.0   0.0   0.0            
Unfunded commitments                      
Schedule of Investments [Line Items]                      
Other commitment 2,685.0   2,685.0   2,381.0            
Unfunded commitments | Senior Direct Lending Program                      
Schedule of Investments [Line Items]                      
Other commitment 311.0   311.0   262.0            
Ares Capital Corporation | Unfunded commitments | Senior Direct Lending Program                      
Schedule of Investments [Line Items]                      
Other commitment 73.0   73.0   62.0            
Subordinated certificates of the SDLP                      
Investments Activity And Fair Value Table [Abstract]                      
Interest income 37.0 $ 33.0 105.0 $ 106.0              
Total investments at fair value $ 1,121.0   $ 1,121.0   $ 987.0            
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%
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%      
Non-controlled affiliate                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     $ 19.9   $ 97.5            
Redemptions (cost)     48.9   64.5            
Sales (cost)     23.5   14.2            
Interest income     8.4   10.3            
Capital structuring service fees     0.1   0.3            
Dividend income $ 0.0 0.0 0.8 0.0 0.6            
Other income 0.0 0.0 0.3 1.0 1.0            
Net realized gains (losses): 29.0 1.0 6.3 58.0 67.5            
Net unrealized gains (losses): 30.0 6.0 61.9 13.0 (15.2)            
Total investments at fair value 357.7   357.7   373.1            
Controlled affiliate                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     1,541.6   757.1            
Redemptions (cost)     407.9   781.7            
Sales (cost)     0.0   57.9            
Interest income     134.9   192.1            
Capital structuring service fees     12.9   22.9            
Dividend income 55.0 23.0 173.0 72.0 100.5            
Other income 2.0 1.0 5.1 3.0 5.1            
Net realized gains (losses): 0.0 40.0 19.1 61.0 61.3            
Net unrealized gains (losses): (18.0) $ (29.0) (10.4) $ 56.0 61.4            
Total investments at fair value $ 3,753.5   $ 3,753.5   $ 2,580.4            
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Royal Bank of Canada, Company Settlement Date July 19, 2022, 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 $ 178.0   $ 178.0                
Derivative Asset, Notional Amount           $ 237          
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ 7.0   $ 7.0                
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Royal Bank of Canada, Company Settlement Date July 28, 2022, 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 $ 203.0   $ 203.0                
Derivative Asset, Notional Amount           $ 262          
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ 13.0   $ 13.0                
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Royal Bank of Canada, Company Settlement Date July 8, 2022                      
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 $ 2.0   $ 2.0                
Derivative Asset, Notional Amount           $ 2          
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ 0.0   $ 0.0                
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Truist Financial Corporation, Company Settlement Date January 19, 2022                      
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
Derivative Liability, Notional Amount         $ 163.0            
Derivative Asset, Notional Amount                 $ 209    
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset         $ (2.0)            
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Truist Financial Corporation, Company Settlement Date January 28, 2022, 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
Derivative Liability, Notional Amount         $ 240.0            
Derivative Asset, Notional Amount                 $ 309    
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset         $ (5.0)            
Open Forward Foreign Currency Contract, Identifier [Axis]: CAD, Truist Financial Corporation, Company Settlement Date January 28, 2022, 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
Derivative Liability, Notional Amount         $ 1.0            
Derivative Asset, Notional Amount                 $ 2    
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset         $ 0.0            
Open Forward Foreign Currency Contract, Identifier [Axis]: EURO, Royal Bank of Canada, Company Settlement Date July 28, 2022                      
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 $ 148.0   $ 148.0                
Derivative Asset, Notional Amount | €             € 123        
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ 11.0   $ 11.0                
Open Forward Foreign Currency Contract, Identifier [Axis]: EURO, Truist Financial Corporation, Company Settlement Date January 28, 2022, 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
Derivative Liability, Notional Amount         $ 172.0            
Derivative Asset, Notional Amount | €                   € 153  
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset         $ (2.0)            
Open Forward Foreign Currency Contract, Identifier [Axis]: GBP, Royal Bank of Canada, Company Settlement Date July 28, 2022, 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 $ 137.0   $ 137.0                
Derivative Asset, Notional Amount | £               £ 135      
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ 5.0   $ 5.0                
Open Forward Foreign Currency Contract, Identifier [Axis]: GBP, Royal Bank of Canada, Company Settlement Date July 28, 2022, 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 $ 45.0   $ 45.0                
Derivative Asset, Notional Amount | £               £ 72      
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset $ 4.0   $ 4.0                
Open Forward Foreign Currency Contract, Identifier [Axis]: GBP, Truist Financial Corporation, Company Settlement Date January 28, 2022, 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
Derivative Liability, Notional Amount         $ 126.0            
Derivative Asset, Notional Amount | £                     £ 95
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset         $ (3.0)            
Open Forward Foreign Currency Contract, Identifier [Axis]: USD, Royal Bank of Canada, Company Settlement Date July 28, 2022                      
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 $ 1.0   $ 1.0                
Derivative Asset, Notional Amount 1.0   1.0                
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 8.87% [2]   8.87% [2]   6.50% [1] 8.87% [2] 8.87% [2] 8.87% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 54.6 [3],[4],[5]   $ 54.6 [3],[4],[5]   $ 55.0 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 54.6 [3],[4],[5]   54.6 [3],[4],[5]   55.0 [6],[7],[8]            
Investment, Identifier [Axis]: A.U.L. Corp. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         1.2            
Less: funded commitments         0.0            
Total unfunded commitments         1.2            
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 commitments         1.2            
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   0.4            
Total investments at fair value 0.4   0.4   0.4            
Investment, Identifier [Axis]: ACAS Equity Holdings Corporation, Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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   58.4            
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   (57.2)            
Net unrealized gains (losses):     0.0   58.4            
Total investments at 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 7.6 [4],[9]   7.6 [4],[9]   111.4 [7],[10]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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 | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 13.7   13.7   13.7            
Less: funded commitments (12.8)   (12.8)   (11.9)            
Total unfunded commitments 0.9   0.9   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 commitments $ 0.9   $ 0.9   $ 1.8            
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 7.81% [2]   7.81% [2]   7.50% [1] 7.81% [2] 7.81% [2] 7.81% [2] 7.50% [1] 7.50% [1] 7.50% [1]
Total first lien senior secured loans $ 9.0 [3],[4]   $ 9.0 [3],[4]   $ 9.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 8.7 [3],[4]   $ 8.7 [3],[4]   $ 9.5 [6],[7]            
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 10.00% [2]   10.00% [2]   5.75% [1] 10.00% [2] 10.00% [2] 10.00% [2] 5.75% [1] 5.75% [1] 5.75% [1]
Total first lien senior secured loans $ 3.9 [3],[4]   $ 3.9 [3],[4]   $ 2.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 3.8 [3],[4]   3.8 [3],[4]   2.3 [6],[7]            
Investment, Identifier [Axis]: ADG, LLC and RC IV GEDC Investor LLC, Membership units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.0 [7]            
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 125.6 [4]   125.6 [4]   115.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 106.8 [4]   106.8 [4]   103.7 [6],[7]            
Investment, Identifier [Axis]: AHR Funding Holdings, Inc. and AHR Parent Holdings, LP, Preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 9.9   9.9                
Investment, Identifier [Axis]: AHR Funding Holdings, Inc. and AHR Parent Holdings, LP, Class B common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 0.1   0.1                
Investment, Identifier [Axis]: AHR Funding Holdings, Inc. and AHR Parent Holdings, LP, Series A preferred shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 35.5   $ 35.5                
Investment, Identifier [Axis]: AI Aqua Merger Sub, Inc. | Revolving and delayed draw loan commitments                      
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 commitments         $ 0.1            
Investment, Identifier [Axis]: AI Aqua Merger Sub, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 6.35% [2]   6.35% [2]   4.50% [1] 6.35% [2] 6.35% [2] 6.35% [2] 4.50% [1] 4.50% [1] 4.50% [1]
Total first lien senior secured loans $ 1.0 [3],[4],[11]   $ 1.0 [3],[4],[11]   $ 0.9 [6],[7],[12]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.9 [3],[4],[11]   0.9 [3],[4],[11]   0.9 [6],[7],[12]            
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 28.9   28.9                
Less: funded commitments (0.4)   (0.4)                
Total unfunded commitments 28.5   28.5                
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 commitments 28.5   28.5                
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 5.0   $ 5.0                
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] 8.67%   8.67%     8.67% 8.67% 8.67%      
Total first lien senior secured loans [3],[4] $ 26.9   $ 26.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 26.9   $ 26.9                
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] 9.17%   9.17%     9.17% 9.17% 9.17%      
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [3],[4] 44.0   44.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 44.0   44.0                
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 [3],[4] 9.9   9.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 9.9   9.9                
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 [3],[4] 9.6   9.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 9.6   9.6                
Investment, Identifier [Axis]: AIM Acquisition, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 1.8   1.8                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 1.8   1.8                
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 commitments 1.8   1.8                
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):     (3.2)   (1.1)            
Total investments at fair value 21.6   21.6   25.0            
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value $ 8.4 [4]   $ 8.4 [4]   $ 11.5 [7]            
Investment, Identifier [Axis]: APG Intermediate Holdings Corporation and APG Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.15% [2]   8.15% [2]   6.75% [1] 8.15% [2] 8.15% [2] 8.15% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 13.3 [3],[4]   $ 13.3 [3],[4]   $ 13.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 13.2 [3],[4]   13.2 [3],[4]   13.5 [6],[7]            
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 [4],[9] 7.4   7.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[9] 3.7   3.7                
Investment, Identifier [Axis]: AQ Sage Buyer, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 8.2   8.2                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 8.2   8.2                
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 commitments 8.2   8.2                
Investment, Identifier [Axis]: AQ Sunshine, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 15.0   15.0   1.8            
Less: funded commitments (1.4)   (1.4)   (0.3)            
Total unfunded commitments 13.6   13.6   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 commitments $ 13.6   $ 13.6   $ 1.5            
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6]         $ 8.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 8.6            
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.20%   10.20%     10.20% 10.20% 10.20%      
Total first lien senior secured loans [3],[4] $ 19.3   $ 19.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 19.3   $ 19.3                
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.42% [2]   10.42% [2]   7.00% [1] 10.42% [2] 10.42% [2] 10.42% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 14.8 [3],[4]   $ 14.8 [3],[4]   $ 13.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 14.8 [3],[4]   $ 14.8 [3],[4]   $ 13.3 [6],[7]            
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.42% [2]   10.42% [2]   7.00% [1] 10.42% [2] 10.42% [2] 10.42% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 8.5 [3],[4]   $ 8.5 [3],[4]   $ 20.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 8.5 [3],[4]   $ 8.5 [3],[4]   $ 20.2 [6],[7]            
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.42%   10.42%     10.42% 10.42% 10.42%      
Total first lien senior secured loans [3],[4] $ 5.6   $ 5.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 5.6   $ 5.6                
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.42% [2]   10.42% [2]   7.00% [1] 10.42% [2] 10.42% [2] 10.42% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 1.4 [3],[4],[13]   $ 1.4 [3],[4],[13]   $ 0.3 [6],[7],[14]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.4 [3],[4],[13]   1.4 [3],[4],[13]   0.3 [6],[7],[14]            
Investment, Identifier [Axis]: ARES 2007-3R, Subordinated notes                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [5] 20.0   20.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [5] $ 0.1   $ 0.1                
Investment, Identifier [Axis]: ASP Dream Acquisition Co LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.38%   7.38%     7.38% 7.38% 7.38%      
Total first lien senior secured loans [3],[4] $ 0.0   $ 0.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.0   0.0                
Investment, Identifier [Axis]: ASP-r-pac Acquisition CO LLC and ASP-r-pac Holdings LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 6.2   6.2   6.2            
Less: funded commitments 0.0   0.0   (1.2)            
Total unfunded commitments 6.2   6.2   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 commitments 6.2   6.2   5.0            
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]                      
Total investments at fair value [4] $ 18.6   $ 18.6                
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 [2] 9.67%   9.67%     9.67% 9.67% 9.67%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.1   0.1                
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]                      
Total investments at fair value [7]         $ 19.6            
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 [1]         6.75%       6.75% 6.75% 6.75%
Total first lien senior secured loans [6],[7]         $ 46.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 45.8            
Investment, Identifier [Axis]: ASP-r-pac Acquisition Co LLC and ASP-r-pac Holdings LP, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.75%       6.75% 6.75% 6.75%
Total first lien senior secured loans [6],[7]         $ 1.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         1.2            
Investment, Identifier [Axis]: ATI Restoration, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 88.8   88.8   12.5            
Less: funded commitments (1.9)   (1.9)   (11.4)            
Total unfunded commitments 86.9   86.9   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 commitments $ 86.9   $ 86.9   $ 1.1            
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.79% [2]   7.79% [2]   6.00% [1] 7.79% [2] 7.79% [2] 7.79% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 33.1 [3],[4]   $ 33.1 [3],[4]   $ 33.3 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 33.1 [3],[4]   $ 33.1 [3],[4]   $ 33.3 [6]            
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.37%   8.37%     8.37% 8.37% 8.37%      
Total first lien senior secured loans [3],[4] $ 3.2   $ 3.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 3.2   $ 3.2                
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.25% [2]   10.25% [2]   6.00% [1] 10.25% [2] 10.25% [2] 10.25% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 1.1 [3],[4],[13]   $ 1.1 [3],[4],[13]   $ 8.1 [6],[7],[14]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.1 [3],[4],[13]   1.1 [3],[4],[13]   $ 8.1 [6],[7],[14]            
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.25%       7.25% 7.25% 7.25%
Total first lien senior secured loans [6]         $ 2.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         2.5            
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     0.5   50.5            
Redemptions (cost)     3.0   26.4            
Sales (cost)     0.0   0.0            
Interest income     4.3   4.1            
Capital structuring service fees     0.0   1.6            
Dividend income     0.0   0.0            
Other income     0.0   0.1            
Net realized gains (losses):     0.0   0.0            
Net unrealized gains (losses):     4.0   5.0            
Total investments at fair value 67.4   67.4   63.9            
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.1   7.1   7.0            
Less: funded commitments (1.6)   (1.6)   (4.0)            
Total unfunded commitments 5.5   5.5   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 commitments 5.5   5.5   3.0            
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, Class A common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 14.3 [4]   $ 14.3 [4]   $ 10.4 [7]            
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 12.68% [2]   12.68% [2]   10.00% [1] 12.68% [2] 12.68% [2] 12.68% [2] 10.00% [1] 10.00% [1] 10.00% [1]
Total first lien senior secured loans $ 51.4 [3],[4]   $ 51.4 [3],[4]   $ 49.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 51.4 [3],[4]   $ 51.4 [3],[4]   $ 49.5 [6],[7]            
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 14.25% [2]   14.25% [2]   11.25% [1] 14.25% [2] 14.25% [2] 14.25% [2] 11.25% [1] 11.25% [1] 11.25% [1]
Total first lien senior secured loans $ 1.7 [3],[4]   $ 1.7 [3],[4]   $ 4.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.7 [3],[4]   1.7 [3],[4]   4.0 [6],[7]            
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.1   0.1   13.7            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 0.1   0.1   13.7            
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 commitments 0.1   0.1   13.7            
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., A ordinary shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] $ 6.5   $ 6.5                
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., Class A ordinary shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 2.8            
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 13.69% [2]   13.69% [2]   10.50% [1] 13.69% [2] 13.69% [2] 13.69% [2] 10.50% [1] 10.50% [1] 10.50% [1]
Total first lien senior secured loans $ 46.2 [3],[4],[5]   $ 46.2 [3],[4],[5]   $ 13.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 46.2 [3],[4],[5]   $ 46.2 [3],[4],[5]   $ 13.7 [6],[7]            
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.01% [2]   11.01% [2]   11.50% [1] 11.01% [2] 11.01% [2] 11.01% [2] 11.50% [1] 11.50% [1] 11.50% [1]
Total first lien senior secured loans $ 13.9 [3],[4],[5]   $ 13.9 [3],[4],[5]   $ 30.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 13.9 [3],[4],[5]   13.9 [3],[4],[5]   30.5 [6],[7]            
Investment, Identifier [Axis]: Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value $ 5.1   $ 5.1   $ 4.0            
Investment, Identifier [Axis]: Accommodations Plus Technologies LLC and Accommodations Plus Technologies Holdings LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 12.17% [2]   12.17% [2]   10.00% [1] 12.17% [2] 12.17% [2] 12.17% [2] 10.00% [1] 10.00% [1] 10.00% [1]
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]                      
Total investments at fair value $ 4.1 [3],[4]   $ 4.1 [3],[4]   $ 3.9 [6],[7]            
Investment, Identifier [Axis]: Acrisure, LLC and Acrisure Finance, Inc., Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.00%   7.00%     7.00% 7.00% 7.00%      
Total first lien senior secured loans [4],[11] $ 0.5   $ 0.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[11] 0.5   0.5                
Investment, Identifier [Axis]: Advarra Holdings, Inc. | Revolving and delayed draw loan commitments                      
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 commitments $ 0.4   $ 0.4                
Investment, Identifier [Axis]: Advarra Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.12%   8.12%     8.12% 8.12% 8.12%      
Total first lien senior secured loans [3],[4] $ 4.1   $ 4.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 4.0   $ 4.0                
Investment, Identifier [Axis]: Aero Operating LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.57% [2]   9.57% [2]   8.00% [1] 9.57% [2] 9.57% [2] 9.57% [2] 8.00% [1] 8.00% [1] 8.00% [1]
Total first lien senior secured loans $ 36.3 [3],[4]   $ 36.3 [3],[4]   $ 36.6 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 34.1 [3],[4]   $ 34.1 [3],[4]   $ 36.6 [6]            
Investment, Identifier [Axis]: Aero Operating LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.57% [2]   9.57% [2]   8.00% [1] 9.57% [2] 9.57% [2] 9.57% [2] 8.00% [1] 8.00% [1] 8.00% [1]
Total first lien senior secured loans $ 1.2 [3],[4]   $ 1.2 [3],[4]   $ 1.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.1 [3],[4]   1.1 [3],[4]   1.2 [6],[7]            
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 45.6   45.6   9.0            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 45.6   45.6   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 commitments $ 45.6   $ 45.6   $ 9.0            
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.25%       6.25% 6.25% 6.25%
Total first lien senior secured loans [6]         $ 64.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         64.0            
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.81%   8.81%     8.81% 8.81% 8.81%      
Total first lien senior secured loans [3],[4] $ 120.9   $ 120.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 118.4   $ 118.4                
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.33%   8.33%     8.33% 8.33% 8.33%      
Total first lien senior secured loans [3],[4] $ 63.5   $ 63.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 62.2   62.2                
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 55.0 [3],[4]   55.0 [3],[4]   27.5 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 54.4 [3],[4]   $ 54.4 [3],[4]   $ 27.5 [7]            
Investment, Identifier [Axis]: Aimbridge Acquisition Co., Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.06% [2]   10.06% [2]   7.60% [1] 10.06% [2] 10.06% [2] 10.06% [2] 7.60% [1] 7.60% [1] 7.60% [1]
Total first lien senior secured loans $ 22.5 [4]   $ 22.5 [4]   $ 22.5 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 21.6 [4]   21.6 [4]   21.4 [7]            
Investment, Identifier [Axis]: Alcami Corporation and ACM Holdings I, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 29.0   29.0   29.0            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 29.0   29.0   29.0            
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 commitments 29.0   29.0   29.0            
Investment, Identifier [Axis]: Alcami Corporation and ACM Holdings I, LLC, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 44.9 [4]   $ 44.9 [4]   $ 19.5 [7]            
Investment, Identifier [Axis]: Alcami Corporation and ACM Holdings I, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.37% [2]   7.37% [2]   4.39% [1] 7.37% [2] 7.37% [2] 7.37% [2] 4.39% [1] 4.39% [1] 4.39% [1]
Total first lien senior secured loans $ 29.0 [4]   $ 29.0 [4]   $ 29.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 29.0 [4]   $ 29.0 [4]   $ 28.0            
Investment, Identifier [Axis]: Alcami Corporation and ACM Holdings I, LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.12% [2]   11.12% [2]   8.14% [1] 11.12% [2] 11.12% [2] 11.12% [2] 8.14% [1] 8.14% [1] 8.14% [1]
Total first lien senior secured loans $ 77.5 [4]   $ 77.5 [4]   $ 77.5 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 77.5 [4]   $ 77.5 [4]   69.0 [7]            
Investment, Identifier [Axis]: Alera Group, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         1.0            
Less: funded commitments         0.0            
Total unfunded commitments         1.0            
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 commitments         $ 1.0            
Investment, Identifier [Axis]: Alera Group, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.05% [2]   9.05% [2]   6.25% [1] 9.05% [2] 9.05% [2] 9.05% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 75.8 [3],[4]   $ 75.8 [3],[4]   $ 96.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 75.0 [3],[4]   75.0 [3],[4]   $ 95.6 [6],[7]            
Investment, Identifier [Axis]: Alteon Health, LLC. First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.50%       7.50% 7.50% 7.50%
Total first lien senior secured loans [6],[7]         $ 2.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         2.8            
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP | Revolving and delayed draw loan commitments                      
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 commitments $ 4.5   $ 4.5   $ 4.5            
Investment, Identifier [Axis]: American Residential Services L.L.C. and Aragorn Parent Holdings LP, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 12.17% [2]   12.17% [2]   9.50% [1] 12.17% [2] 12.17% [2] 12.17% [2] 9.50% [1] 9.50% [1] 9.50% [1]
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]                      
Total investments at 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]                      
Total investments at fair value 5.5 [4]   5.5 [4]   3.7 [7]            
Investment, Identifier [Axis]: American Seafoods Group LLC and American Seafoods Partners LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.2 [4]   0.2 [4]   0.2 [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]                      
Total investments at fair value [7]         $ 18.9            
Investment, Identifier [Axis]: American Seafoods Group LLC and American Seafoods Partners LLC, Warrant to purchase up to 7,422,078 Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 23.6   $ 23.6                
Investment, Identifier [Axis]: Amryt Pharmaceuticals, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.98%   8.98%     8.98% 8.98% 8.98%      
Total first lien senior secured loans [3],[4],[5] $ 12.7   $ 12.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 12.7   $ 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 7.62% [2]   7.62% [2]   4.60% [1] 7.62% [2] 7.62% [2] 7.62% [2] 4.60% [1] 4.60% [1] 4.60% [1]
Total first lien senior secured loans $ 2.3 [4]   $ 2.3 [4]   $ 1.0 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 2.2 [4]   2.2 [4]   1.0 [7]            
Investment, Identifier [Axis]: Anaplan, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 1.4   1.4                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 1.4   1.4                
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 commitments $ 1.4   $ 1.4                
Investment, Identifier [Axis]: Anaplan, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.53%   9.53%     9.53% 9.53% 9.53%      
Total first lien senior secured loans [3],[4] $ 21.8   $ 21.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 21.4   21.4                
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.4   3.4   4.3            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 3.4   3.4   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 commitments $ 3.4   $ 3.4   $ 4.3            
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.25%       6.25% 6.25% 6.25%
Total first lien senior secured loans         $ 4.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         $ 4.7            
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 [2] 5.60%   5.60%     5.60% 5.60% 5.60%      
Total first lien senior secured loans [4] $ 4.0   $ 4.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 4.0   $ 4.0                
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 8.81% [2]   8.81% [2]   7.00% [1] 8.81% [2] 8.81% [2] 8.81% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 1.0 [3],[4]   $ 1.0 [3],[4]   $ 16.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.0 [3],[4]   1.0 [3],[4]   16.0 [6],[7]            
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, Limited partnership units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 7.1 [4],[5]   7.1 [4],[5]   7.6 [7],[8]            
Investment, Identifier [Axis]: Apex Clean Energy TopCo, LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     9.1   80.5            
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):     46.7   (1.4)            
Total investments at fair value 134.9   134.9   79.1            
Investment, Identifier [Axis]: Apex Clean Energy TopCo, LLC, Class A common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 134.9   134.9   79.1            
Investment, Identifier [Axis]: Applied Technical Services, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.8   3.8                
Less: funded commitments (0.7)   (0.7)                
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 commitments $ 3.1   $ 3.1                
Investment, Identifier [Axis]: Applied Technical Services, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.42%   9.42%     9.42% 9.42% 9.42%      
Total first lien senior secured loans [3],[4] $ 0.8   $ 0.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.8   $ 0.8                
Investment, Identifier [Axis]: Applied Technical Services, LLC, First lien senior secured revolving 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 [3] $ 0.7   $ 0.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] 0.7   0.7                
Investment, Identifier [Axis]: Appriss Health, LLC and Appriss Health Intermediate Holdings, Inc. | Revolving and delayed draw loan commitments                      
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 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 9.93% [2]   9.93% [2]   8.25% [1] 9.93% [2] 9.93% [2] 9.93% [2] 8.25% [1] 8.25% [1] 8.25% [1]
Total first lien senior secured loans $ 5.7 [3],[4]   $ 5.7 [3],[4]   $ 13.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 5.7 [3],[4]   5.7 [3],[4]   13.4 [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]                      
Total investments at fair value 37.6 [4]   37.6 [4]   34.6 [7]            
Investment, Identifier [Axis]: Apptio, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.2   4.2   4.2            
Less: funded commitments (1.7)   (1.7)   (1.7)            
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 commitments $ 2.5   $ 2.5   $ 2.5            
Investment, Identifier [Axis]: Apptio, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.46% [2]   8.46% [2]   8.25% [1] 8.46% [2] 8.46% [2] 8.46% [2] 8.25% [1] 8.25% [1] 8.25% [1]
Total first lien senior secured loans $ 42.2 [3],[4]   $ 42.2 [3],[4]   $ 62.2 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 41.8 [3],[4]   $ 41.8 [3],[4]   $ 62.2 [6]            
Investment, Identifier [Axis]: Apptio, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.46% [2]   8.46% [2]   8.25% [1] 8.46% [2] 8.46% [2] 8.46% [2] 8.25% [1] 8.25% [1] 8.25% [1]
Total first lien senior secured loans $ 1.7 [3],[4]   $ 1.7 [3],[4]   $ 1.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.7 [3],[4]   1.7 [3],[4]   $ 1.7 [6],[7]            
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 61.3   61.3                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 61.3   61.3                
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 commitments $ 61.3   $ 61.3                
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.81% [2]   8.81% [2]   8.21% [1] 8.81% [2] 8.81% [2] 8.81% [2] 8.21% [1] 8.21% [1] 8.21% [1]
Total first lien senior secured loans $ 90.0 [3],[4],[5]   $ 90.0 [3],[4],[5]   $ 69.5 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 89.1 [3],[4],[5]   $ 89.1 [3],[4],[5]   $ 69.5 [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 8.46% [2]   8.46% [2]   7.50% [1] 8.46% [2] 8.46% [2] 8.46% [2] 7.50% [1] 7.50% [1] 7.50% [1]
Total first lien senior secured loans $ 69.4 [3],[4],[5]   $ 69.4 [3],[4],[5]   $ 14.5 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 69.4 [3],[4],[5]   $ 69.4 [3],[4],[5]   $ 14.5 [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 [1]         7.75%       7.75% 7.75% 7.75%
Total first lien senior secured loans [6],[7],[8]         $ 7.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[8]         $ 7.5            
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 8.00% [2]   8.00% [2]   6.75% [1] 8.00% [2] 8.00% [2] 8.00% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 6.4 [3],[4],[5]   $ 6.4 [3],[4],[5]   $ 111.2 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 6.4 [3],[4],[5]   6.4 [3],[4],[5]   111.2 [6],[7],[8]            
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],[13]   1.4 [4],[5],[13]   1.3 [7],[8],[12]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.4 [4],[5],[13]   1.4 [4],[5],[13]   1.4 [7],[8],[12]            
Investment, Identifier [Axis]: Ares IIIR/IVR CLO Ltd., Subordinated notes                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [8]         20.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [8]         0.0            
Investment, Identifier [Axis]: Argenbright Holdings V, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         1.3            
Less: funded commitments         0.0            
Total unfunded commitments         1.3            
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 commitments         $ 1.3            
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.7   3.7                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 3.7   3.7                
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 commitments $ 3.7   $ 3.7                
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.98%   9.98%     9.98% 9.98% 9.98%      
Total first lien senior secured loans [3],[4],[5] $ 21.0   $ 21.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 21.0   $ 21.0                
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 [2] 9.98%   9.98%     9.98% 9.98% 9.98%      
Total first lien senior secured loans [3],[4],[5] $ 4.4   $ 4.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] 4.4   4.4                
Investment, Identifier [Axis]: Argenbright Holdings V, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 21.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         20.9            
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 20.0   20.0   20.0            
Less: funded commitments (15.0)   (15.0)   (5.0)            
Total unfunded commitments 5.0   5.0   15.0            
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 commitments 5.0   5.0   15.0            
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 7.0 [4]   $ 7.0 [4]   $ 6.7 [7]            
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.29% [2]   7.29% [2]   5.25% [1] 7.29% [2] 7.29% [2] 7.29% [2] 5.25% [1] 5.25% [1] 5.25% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 27.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 27.2 [6],[7]            
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.62% [2]   7.62% [2]   5.25% [1] 7.62% [2] 7.62% [2] 7.62% [2] 5.25% [1] 5.25% [1] 5.25% [1]
Total first lien senior secured loans $ 13.7 [3],[4],[13]   $ 13.7 [3],[4],[13]   $ 3.7 [6],[7],[14]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 13.4 [3],[4],[13]   13.4 [3],[4],[13]   3.6 [6],[7],[14]            
Investment, Identifier [Axis]: AthenaHealth Group Inc., Minerva Holdco, Inc. and BCPE Co-Invest (A), LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 9.0   9.0                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 9.0   9.0                
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 commitments 9.0   9.0                
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]                      
Total investments at fair value [4] 10.2   10.2                
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]                      
Total investments at fair value [4] 197.4   197.4                
Investment, Identifier [Axis]: AthenaHealth Group Inc., VVC Holding Corp, Virence Intermediate Holding Corp, and Virence Holdings LLC, Class A interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         49.3            
Investment, Identifier [Axis]: Athenahealth, Inc., VVC Holding Corp., Virence Intermediate Holding Corp., and Virence Holdings LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         33.1            
Less: funded commitments         0.0            
Total unfunded commitments         33.1            
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 commitments         33.1            
Investment, Identifier [Axis]: Athyrium Buffalo LP | Private equity commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 15.5   15.5                
Less: funded commitments (7.6)   (7.6)                
Total unfunded commitments 7.9   7.9                
Less: commitments substantially at discretion of the Company (7.9)   (7.9)                
Total net adjusted unfunded revolving and delayed draw commitments 0.0   0.0                
Investment, Identifier [Axis]: Athyrium Buffalo LP, Limited partnership interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] 7.7   7.7                
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.4   0.4   0.4            
Less: funded commitments (0.1)   (0.1)   0.0            
Total unfunded commitments 0.3   0.3   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 commitments $ 0.3   $ 0.3   $ 0.4            
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.57% [2]   8.57% [2]   6.50% [1] 8.57% [2] 8.57% [2] 8.57% [2] 6.50% [1] 6.50% [1] 6.50% [1]
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]                      
Total investments at 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 loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.57% [2]   8.57% [2]   6.50% [1] 8.57% [2] 8.57% [2] 8.57% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 2.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.1 [3],[4]   $ 0.1 [3],[4]   2.1 [6],[7]            
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.57%   8.57%     8.57% 8.57% 8.57%      
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.2   $ 0.2                
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.49%   8.49%     8.49% 8.49% 8.49%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.1   0.1                
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, Class A common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0   $ 0.0   $ 0.6 [7]            
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.67% [2]   8.67% [2]   6.00% [1] 8.67% [2] 8.67% [2] 8.67% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 10.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   10.0 [6],[7]            
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, Preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 3.2 [4]   3.2 [4]   $ 4.5            
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC | Revolving and delayed draw loan commitments                      
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 commitments $ 0.2   $ 0.2                
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.04% [2]   9.04% [2]   6.75% [1] 9.04% [2] 9.04% [2] 9.04% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 9.3 [3],[4]   $ 9.3 [3],[4]   $ 6.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 9.2 [3],[4]   9.2 [3],[4]   $ 6.5 [6],[7]            
Investment, Identifier [Axis]: Aventine Intermediate LLC & Aventine Holdings II LLC, Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         10.25%       10.25% 10.25% 10.25%
Total first lien senior secured loans 37.5 [4]   37.5 [4]   $ 35.6 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 36.4 [4]   $ 36.4 [4]   35.3 [7]            
Investment, Identifier [Axis]: Aventine Intermediate LLC and Aventine Holdings II LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         2.6            
Less: funded commitments         0.0            
Total unfunded commitments         2.6            
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 commitments         2.6            
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.17%   8.17%     8.17% 8.17% 8.17%      
Total first lien senior secured loans [3],[4],[11] $ 9.2   $ 9.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[11] $ 8.0   $ 8.0                
Investment, Identifier [Axis]: Aventiv Technologies, LLC and Securus Technologies Holdings, Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 11.06%   11.06%     11.06% 11.06% 11.06%      
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.2   0.2                
Investment, Identifier [Axis]: Avetta, LLC | Revolving and delayed draw loan commitments                      
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 commitments $ 4.2   $ 4.2   $ 4.2            
Investment, Identifier [Axis]: Avetta, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.56% [2]   8.56% [2]   7.25% [1] 8.56% [2] 8.56% [2] 8.56% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 11.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   11.8 [6],[7]            
Investment, Identifier [Axis]: AxiomSL Group, Inc. and Calypso Group, Inc. | Revolving and delayed draw loan commitments                      
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 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 [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 21.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         21.2            
Investment, Identifier [Axis]: AxiomSL Group, Inc. and Calypso Group, Inc., First lien senior secured revolving 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 [3],[4] $ 21.2   $ 21.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 21.2   21.2                
Investment, Identifier [Axis]: Axiomatic, LLC, Class A-1 units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 5.0   5.0                
Investment, Identifier [Axis]: BAART Programs, Inc., MedMark Services, Inc., and Canadian Addiction Treatment Centres LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.2   2.2                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 2.2   2.2                
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 commitments $ 2.2   $ 2.2                
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] 7.83%   7.83%     7.83% 7.83% 7.83%      
Total first lien senior secured loans [3],[4] $ 6.0   $ 6.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 6.0   6.0                
Investment, Identifier [Axis]: BCC Blueprint Holdings I, LLC and BCC Blueprint Investments, LLC, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 3.8 [4]   $ 3.8 [4]   $ 4.1 [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 9.54% [2]   9.54% [2]   7.00% [1] 9.54% [2] 9.54% [2] 9.54% [2] 7.00% [1] 7.00% [1] 7.00% [1]
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]                      
Total investments at 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 4.9 [4]   4.9 [4]   4.5 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 4.9 [4]   4.9 [4]   4.5 [7]            
Investment, Identifier [Axis]: BH-Sharp Holdings LP, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 1.2   $ 1.2                
Investment, Identifier [Axis]: BW Landco LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)         0.0            
Redemptions (cost)         0.0            
Sales (cost)         20.9            
Interest income         0.0            
Capital structuring service fees         0.0            
Dividend income         0.0            
Other income         0.0            
Net realized gains (losses):         20.8            
Net unrealized gains (losses):         (16.0)            
Total investments at fair value         $ 0.0            
Investment, Identifier [Axis]: Badger Sportswear Acquisition, Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 12.12% [2]   12.12% [2]   10.25% [1] 12.12% [2] 12.12% [2] 12.12% [2] 10.25% [1] 10.25% [1] 10.25% [1]
Total first lien senior secured loans $ 56.8 [3],[4]   $ 56.8 [3],[4]   $ 56.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 56.8 [3],[4]   56.8 [3],[4]   56.8 [6],[7]            
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]                      
Total investments at fair value $ 8.0 [4]   $ 8.0 [4]   $ 5.5 [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 10.07% [2]   10.07% [2]   7.50% [1] 10.07% [2] 10.07% [2] 10.07% [2] 7.50% [1] 7.50% [1] 7.50% [1]
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]                      
Total investments at fair value 28.9 [3],[4]   28.9 [3],[4]   29.4 [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]                      
Total investments at fair value 23.2 [4]   23.2 [4]   22.7 [7]            
Investment, Identifier [Axis]: Bambino Group Holdings, LLC, Class A preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.2 [4]   $ 1.2 [4]   1.1 [7]            
Investment, Identifier [Axis]: Bamboo Purchaser, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         4.1            
Less: funded commitments         0.0            
Total unfunded commitments         4.1            
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 commitments         $ 4.1            
Investment, Identifier [Axis]: Bamboo Purchaser, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.50% [2]   9.50% [2]   6.75% [1] 9.50% [2] 9.50% [2] 9.50% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 42.9 [3],[4]   $ 42.9 [3],[4]   $ 39.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 42.5 [3],[4]   42.5 [3],[4]   38.6 [6],[7]            
Investment, Identifier [Axis]: Banyan Software Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         33.8            
Less: funded commitments         0.0            
Total unfunded commitments         33.8            
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 commitments         $ 33.8            
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 19.3   19.3                
Less: funded commitments (0.9)   (0.9)                
Total unfunded commitments 18.4   18.4                
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 commitments $ 18.4   $ 18.4                
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.75%       7.75% 7.75% 7.75%
Total first lien senior secured loans [6],[7]         $ 6.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 6.7            
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.17%   10.17%     10.17% 10.17% 10.17%      
Total first lien senior secured loans [3],[4] $ 9.1   $ 9.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 9.1   $ 9.1                
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.17% [2]   10.17% [2]   7.75% [1] 10.17% [2] 10.17% [2] 10.17% [2] 7.75% [1] 7.75% [1] 7.75% [1]
Total first lien senior secured loans $ 1.0 [3],[4]   $ 1.0 [3],[4]   $ 7.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.0 [3],[4]   $ 1.0 [3],[4]   $ 7.7 [6],[7]            
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6],[7]         $ 5.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         5.0            
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.17%   10.17%     10.17% 10.17% 10.17%      
Total first lien senior secured loans [3],[4] $ 0.9   $ 0.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.9   0.9                
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, Preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 5.1   5.1                
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 6.8   6.8   9.0            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 6.8   6.8   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 commitments $ 6.8   $ 6.8   $ 9.0            
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.37% [2]   8.37% [2]   6.00% [1] 8.37% [2] 8.37% [2] 8.37% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 16.6 [3],[4],[5]   $ 16.6 [3],[4],[5]   $ 14.5 [6],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 16.4 [3],[4],[5]   16.4 [3],[4],[5]   14.4 [6],[8]            
Investment, Identifier [Axis]: Bearcat Buyer, Inc. and Bearcat Parent, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         32.8            
Less: funded commitments         0.0            
Total unfunded commitments         32.8            
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 commitments         32.8            
Investment, Identifier [Axis]: Bearcat Buyer, Inc. and Bearcat Parent, Inc., Class B common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 10.8            
Investment, Identifier [Axis]: Bearcat Buyer, Inc. and Bearcat Parent, Inc., Second lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         9.25%       9.25% 9.25% 9.25%
Total first lien senior secured loans [6],[7]         $ 69.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 69.5            
Investment, Identifier [Axis]: Bearcat Buyer, Inc. and Bearcat Parent, Inc., Second lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         9.25%       9.25% 9.25% 9.25%
Total first lien senior secured loans [6],[7]         $ 12.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         12.7            
Investment, Identifier [Axis]: Belfor Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 25.0   25.0   25.0            
Less: funded commitments (11.1)   (11.1)   (4.0)            
Total unfunded commitments 13.9   13.9   21.0            
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 commitments $ 13.9   $ 13.9   $ 21.0            
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 4.44% [2]   4.44% [2]   5.50% [1] 4.44% [2] 4.44% [2] 4.44% [2] 5.50% [1] 5.50% [1] 5.50% [1]
Total first lien senior secured loans $ 4.3 [4],[13]   $ 4.3 [4],[13]   $ 0.0 [7],[14]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.3 [4],[13]   $ 4.3 [4],[13]   0.0 [7],[14]            
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.00%   9.00%     9.00% 9.00% 9.00%      
Total first lien senior secured loans [4],[13] $ 2.8   $ 2.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[13] 2.8   2.8                
Investment, Identifier [Axis]: Benecon Midco II LLC and Locutus Holdco LLC | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value 19.7   19.7   15.5            
Investment, Identifier [Axis]: Benefytt Technologies, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.9   0.9   5.9            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 0.9   0.9   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 commitments $ 0.9   $ 0.9   $ 5.9            
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 12.09% [2]   12.09% [2]   6.75% [1] 12.09% [2] 12.09% [2] 12.09% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 23.8 [3],[4]   $ 23.8 [3],[4]   $ 23.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 19.5 [3],[4]   $ 19.5 [3],[4]   23.2 [6],[7]            
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.58%   10.58%     10.58% 10.58% 10.58%      
Total first lien senior secured loans [3],[4] $ 5.0   $ 5.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 4.1   4.1                
Investment, Identifier [Axis]: Berner Food & Beverage, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 1.7   1.7   1.7            
Less: funded commitments (0.9)   (0.9)   (0.7)            
Total unfunded commitments 0.8   0.8   1.0            
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 commitments $ 0.8   $ 0.8   $ 1.0            
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.75% [2]   10.75% [2]   8.75% [1] 10.75% [2] 10.75% [2] 10.75% [2] 8.75% [1] 8.75% [1] 8.75% [1]
Total first lien senior secured loans $ 0.9 [3],[4]   $ 0.9 [3],[4]   $ 0.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.9 [3],[4]   0.9 [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 [1]         7.50%       7.50% 7.50% 7.50%
Total first lien senior secured loans [6],[7]         $ 0.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 0.3            
Investment, Identifier [Axis]: Birch Permian, LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         9.50%       9.50% 9.50% 9.50%
Total first lien senior secured loans [6],[7]         $ 75.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         75.7            
Investment, Identifier [Axis]: Blue Angel Buyer 1, LLC and Blue Angel Holdco, LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)         0.0            
Redemptions (cost)         0.0            
Sales (cost)         9.7            
Interest income         0.0            
Capital structuring service fees         0.0            
Dividend income         0.0            
Other income         0.0            
Net realized gains (losses):         46.3            
Net unrealized gains (losses):         (18.4)            
Total investments at fair value         0.0            
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   0.5            
Net unrealized gains (losses):     (0.2)   0.0            
Total investments at fair value 0.1   0.1   0.2            
Investment, Identifier [Axis]: Blue Wolf Capital Fund II, L.P., Limited partnership interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [5],[11]   0.1 [5],[11]   0.2 [8],[12]            
Investment, Identifier [Axis]: BlueHalo Financing Holdings, LLC, BlueHalo Global Holdings, LLC, and BlueHalo, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.0   3.0                
Less: funded commitments (1.7)   (1.7)                
Total unfunded commitments 1.3   1.3                
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 commitments $ 1.3   $ 1.3                
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] 8.34%   8.34%     8.34% 8.34% 8.34%      
Total first lien senior secured loans [3],[4] $ 1.0   $ 1.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 1.0   $ 1.0                
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] 8.55%   8.55%     8.55% 8.55% 8.55%      
Total first lien senior secured loans [3],[4] $ 1.7   $ 1.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 1.6   1.6                
Investment, Identifier [Axis]: Borrower R365 Holdings LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.9   2.9   1.5            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 2.9   2.9   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 commitments $ 2.9   $ 2.9   $ 1.5            
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.50%       7.50% 7.50% 7.50%
Total first lien senior secured loans [6],[7]         $ 15.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         15.5            
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.68%   9.68%     9.68% 9.68% 9.68%      
Total first lien senior secured loans [3],[4] $ 15.9   $ 15.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 15.9   $ 15.9                
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.68%   9.68%     9.68% 9.68% 9.68%      
Total first lien senior secured loans [3],[4] $ 1.4   $ 1.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 1.4   1.4                
Investment, Identifier [Axis]: Bottomline Technologies, Inc. | Revolving and delayed draw loan commitments                      
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 commitments $ 2.3   $ 2.3                
Investment, Identifier [Axis]: Bottomline Technologies, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.35%   8.35%     8.35% 8.35% 8.35%      
Total first lien senior secured loans [3],[4] $ 33.0   $ 33.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 32.4   32.4                
Investment, Identifier [Axis]: Bowhunter Holdings, LLC, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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)     3.3   4.6            
Redemptions (cost)     3.0   7.8            
Sales (cost)     0.0   0.0            
Interest income     2.4   3.1            
Capital structuring service fees     0.0   0.0            
Dividend income     0.0   0.2            
Other income     0.2   0.1            
Net realized gains (losses):     0.0   0.0            
Net unrealized gains (losses):     2.4   (4.4)            
Total investments at fair value 50.4   50.4   47.8            
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.4   4.4   4.4            
Less: funded commitments (2.3)   (2.3)   (1.7)            
Total unfunded commitments 2.1   2.1   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 commitments 2.1   2.1   2.7            
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P., Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 9.9 [4]   $ 9.9 [4]   $ 8.8 [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 10.67% [2]   10.67% [2]   7.25% [1] 10.67% [2] 10.67% [2] 10.67% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 38.9 [3],[4]   $ 38.9 [3],[4]   $ 39.4 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 38.2 [3],[4]   $ 38.2 [3],[4]   $ 37.4 [6]            
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.74% [2]   9.74% [2]   7.25% [1] 9.74% [2] 9.74% [2] 9.74% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 2.3 [3],[4]   $ 2.3 [3],[4]   $ 1.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.3 [3],[4]   $ 2.3 [3],[4]   1.6 [6],[7]            
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.41%   8.41%     8.41% 8.41% 8.41%      
Total first lien senior secured loans [3],[4],[11] $ 4.8   $ 4.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[11] 4.4   4.4                
Investment, Identifier [Axis]: Businessolver.com, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.9   3.9   18.9            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 3.9   3.9   18.9            
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 commitments $ 3.9   $ 3.9   $ 18.9            
Investment, Identifier [Axis]: Businessolver.com, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.17% [2]   9.17% [2]   6.50% [1] 9.17% [2] 9.17% [2] 9.17% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 14.4 [3],[4]   $ 14.4 [3],[4]   $ 70.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 14.2 [3],[4]   14.2 [3],[4]   69.5 [6],[7]            
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 12.0   12.0   12.0            
Less: funded commitments (3.7)   (3.7)   (3.0)            
Total unfunded commitments 8.3   8.3   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 commitments $ 8.3   $ 8.3   $ 9.0            
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.62% [2]   8.62% [2]   5.63% [1] 8.62% [2] 8.62% [2] 8.62% [2] 5.63% [1] 5.63% [1] 5.63% [1]
Total first lien senior secured loans $ 33.7 [4],[11]   $ 33.7 [4],[11]   $ 34.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 31.1 [4],[11]   31.1 [4],[11]   $ 33.3            
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: CDI Holdings III Corp. and CDI Holdings I Corp. | Revolving and delayed draw loan commitments                      
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 commitments 0.9   0.9   0.9            
Investment, Identifier [Axis]: CDI Holdings III Corp. and CDI Holdings I Corp., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.6 [4]   $ 4.6 [4]   $ 6.1 [7]            
Investment, Identifier [Axis]: CDI Holdings III Corp. and CDI Holdings I Corp., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.42% [2]   9.42% [2]   6.75% [1] 9.42% [2] 9.42% [2] 9.42% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 3.8 [3],[4]   $ 3.8 [3],[4]   $ 3.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 3.7 [3],[4]   3.7 [3],[4]   3.8 [6],[7]            
Investment, Identifier [Axis]: CHG PPC Parent LLC & PPC CHG Blocker LLC, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.9 [4]   $ 2.9 [4]   $ 3.0 [7]            
Investment, Identifier [Axis]: CHG PPC Parent LLC & PPC CHG Blocker LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.87% [2]   9.87% [2]   7.25% [1] 9.87% [2] 9.87% [2] 9.87% [2] 7.25% [1] 7.25% [1] 7.25% [1]
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]                      
Total investments at fair value 89.9 [3],[4]   89.9 [3],[4]   93.7 [6],[7]            
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 11.2   11.2                
Less: funded commitments (0.9)   (0.9)                
Total unfunded commitments 10.3   10.3                
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 commitments 10.3   10.3                
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 2.9   $ 2.9                
Investment, Identifier [Axis]: CMG HoldCo, LLC and CMG Buyer Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.02%   8.02%     8.02% 8.02% 8.02%      
Total first lien senior secured loans [3],[4] $ 24.6   $ 24.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 24.1   $ 24.1                
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] 8.31%   8.31%     8.31% 8.31% 8.31%      
Total first lien senior secured loans $ 0.9   $ 0.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.9   0.9                
Investment, Identifier [Axis]: CMW Parent LLC (fka Black Arrow, Inc.), Series A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.0 [7]            
Investment, Identifier [Axis]: CREST Exeter Street Solar 2004-1, Preferred shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [5]   0.0 [5]   0.0 [8]            
Investment, Identifier [Axis]: CST Buyer Company (d/b/a Intoxalock) | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 6.1   6.1   6.1            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 6.1   6.1   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 commitments 6.1   6.1   6.1            
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 30.5   30.5   19.7            
Less: funded commitments 0.0   0.0   (0.4)            
Total unfunded commitments 30.5   30.5   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 commitments 30.5   30.5   19.3            
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 17.8 [4]   $ 17.8 [4]   $ 15.9 [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 8.87% [2]   8.87% [2]   6.25% [1] 8.87% [2] 8.87% [2] 8.87% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 39.0 [3],[4]   $ 39.0 [3],[4]   $ 39.4 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 39.0 [3],[4]   $ 39.0 [3],[4]   $ 39.4 [6]            
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 8.86% [2]   8.86% [2]   6.75% [1] 8.86% [2] 8.86% [2] 8.86% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 26.6 [3],[4]   $ 26.6 [3],[4]   $ 49.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 26.6 [3],[4]   $ 26.6 [3],[4]   $ 49.2 [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 [2] 8.87%   8.87%     8.87% 8.87% 8.87%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.1   0.1                
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.00%       8.00% 8.00% 8.00%
Total first lien senior secured loans [6],[7],[14]         $ 0.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   0.4 [6],[7],[14]            
Investment, Identifier [Axis]: Cadence Aerospace, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 15.3   15.3   15.1            
Less: funded commitments (12.6)   (12.6)   (11.7)            
Total unfunded commitments 2.7   2.7   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 commitments $ 2.7   $ 2.7   $ 3.4            
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 11.31%   11.31%     11.31% 11.31% 11.31%      
Total first lien senior secured loans [3],[4] $ 31.2   $ 31.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 30.6   $ 30.6                
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         9.50%       9.50% 9.50% 9.50%
Total first lien senior secured loans [6]         $ 31.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 30.5            
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.74% [2]   11.74% [2]   9.50% [1] 11.74% [2] 11.74% [2] 11.74% [2] 9.50% [1] 9.50% [1] 9.50% [1]
Total first lien senior secured loans $ 11.9 [3],[4]   $ 11.9 [3],[4]   $ 9.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 11.6 [3],[4]   $ 11.6 [3],[4]   $ 9.5 [6],[7]            
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.31% [2]   11.31% [2]   9.50% [1] 11.31% [2] 11.31% [2] 11.31% [2] 9.50% [1] 9.50% [1] 9.50% [1]
Total first lien senior secured loans $ 9.7 [3],[4]   $ 9.7 [3],[4]   $ 12.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 9.5 [3],[4]   $ 9.5 [3],[4]   11.6 [6],[7]            
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 12.18%   12.18%     12.18% 12.18% 12.18%      
Total first lien senior secured loans $ 7.8 [3],[4]   $ 7.8 [3],[4]   7.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 7.6 [3],[4]   $ 7.6 [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 11.31% [2]   11.31% [2]   9.50% [1] 11.31% [2] 11.31% [2] 11.31% [2] 9.50% [1] 9.50% [1] 9.50% [1]
Total first lien senior secured loans $ 5.0 [3],[4]   $ 5.0 [3],[4]   $ 4.0 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.9 [3],[4]   $ 4.9 [3],[4]   $ 3.9 [6]            
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.31% [2]   11.31% [2]   9.50% [1] 11.31% [2] 11.31% [2] 11.31% [2] 9.50% [1] 9.50% [1] 9.50% [1]
Total first lien senior secured loans $ 11.6 [3],[4],[13]   $ 11.6 [3],[4],[13]   $ 7.9 [6],[7],[14]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 11.4 [3],[4],[13]   $ 11.4 [3],[4],[13]   $ 7.6 [6],[7],[14]            
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.31% [2]   11.31% [2]   8.75% [1] 11.31% [2] 11.31% [2] 11.31% [2] 8.75% [1] 8.75% [1] 8.75% [1]
Total first lien senior secured loans $ 0.9 [3],[4]   $ 0.9 [3],[4]   $ 3.0 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.9 [3],[4]   0.9 [3],[4]   $ 2.9 [6]            
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         9.50%       9.50% 9.50% 9.50%
Total first lien senior secured loans [6],[7]         $ 0.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         0.7            
Investment, Identifier [Axis]: CallMiner, Inc., Warrant to purchase shares of Series 1 preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: CallMiner, Inc., Warrant to purchase up to 2,350,636 shares of Series 1 preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Calyx Energy III, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 11.15%   11.15%     11.15% 11.15% 11.15%      
Total first lien senior secured loans [3],[4] $ 60.6   $ 60.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 60.6   60.6                
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 15.3   15.3   27.3            
Less: funded commitments (8.8)   (8.8)   (11.2)            
Total unfunded commitments 6.5   6.5   16.1            
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 commitments 6.5   6.5   16.1            
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 19.8 [4]   $ 19.8 [4]   $ 14.4 [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 7.87% [2]   7.87% [2]   5.75% [1] 7.87% [2] 7.87% [2] 7.87% [2] 5.75% [1] 5.75% [1] 5.75% [1]
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]                      
Total investments at fair value 0.3 [3],[4]   0.3 [3],[4]   $ 0.3 [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]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7],[14]         $ 2.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0   $ 0.0   $ 2.3 [6],[7],[14]            
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. and Capstone Parent Holdings, LP, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.87% [2]   11.87% [2]   9.75% [1] 11.87% [2] 11.87% [2] 11.87% [2] 9.75% [1] 9.75% [1] 9.75% [1]
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]                      
Total investments at fair value 68.3 [3],[4]   68.3 [3],[4]   68.3 [6],[7]            
Investment, Identifier [Axis]: Captive Resources Midco, LLC | Revolving and delayed draw loan commitments                      
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                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                
Total net adjusted unfunded revolving and delayed draw commitments $ 1.2   $ 1.2                
Investment, Identifier [Axis]: Captive Resources Midco, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.53%   8.53%     8.53% 8.53% 8.53%      
Total first lien senior secured loans [3],[4] $ 14.1   $ 14.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 13.8   13.8                
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 5.0   5.0   5.0            
Less: funded commitments (2.2)   (2.2)   (0.6)            
Total unfunded commitments 2.8   2.8   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 commitments $ 2.8   $ 2.8   $ 4.4            
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 9.75% [2]   9.75% [2]   6.75% [1] 9.75% [2] 9.75% [2] 9.75% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 2.2 [3],[4]   $ 2.2 [3],[4]   $ 0.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.1 [3],[4]   $ 2.1 [3],[4]   $ 0.6 [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 11.40% [2]   11.40% [2]   8.50% [1] 11.40% [2] 11.40% [2] 11.40% [2] 8.50% [1] 8.50% [1] 8.50% [1]
Total first lien senior secured loans $ 64.3 [3],[4]   $ 64.3 [3],[4]   $ 59.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 61.5 [3],[4]   61.5 [3],[4]   59.9 [6],[7]            
Investment, Identifier [Axis]: Cardinal Parent, Inc. and Packers Software Intermediate Holdings, Inc., Series A preferred shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 27.9 [4]   27.9 [4]   28.0 [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]                      
Total investments at fair value 9.9 [4]   9.9 [4]   10.1 [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]                      
Total investments at fair value 11.8 [4]   11.8 [4]   13.4 [7]            
Investment, Identifier [Axis]: Cehntric Brands LLC and Centric Brands GP LLC, First lien senior secured loan                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 71.2   71.2                
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 8.7   8.7   8.5            
Less: funded commitments (8.7)   (8.7)   (8.3)            
Total unfunded commitments 0.0   0.0   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 commitments 0.0   0.0   $ 0.2            
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         5.65%       5.65% 5.65% 5.65%
Total first lien senior secured loans 6.8 [4],[9]   6.8 [4],[9]   $ 6.8 [7],[14]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 3.4 [4],[9]   3.4 [4],[9]   6.2 [7],[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 [4],[9] 0.2   0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[9] 0.1   0.1                
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 8.6   8.6   7.9            
Less: funded commitments (7.4)   (7.4)   (2.3)            
Total unfunded commitments 1.2   1.2   5.6            
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 commitments 1.2   1.2   $ 5.6            
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         10.00%       10.00% 10.00% 10.00%
Total first lien senior secured loans $ 74.2 [3],[4]   $ 74.2 [3],[4]   $ 67.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 67.3            
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.63% [2]   8.63% [2]   6.50% [1] 8.63% [2] 8.63% [2] 8.63% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 7.4 [3],[4]   $ 7.4 [3],[4]   $ 2.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 7.1 [3],[4]   7.1 [3],[4]   2.3 [6],[7]            
Investment, Identifier [Axis]: Centric Brands LLC and Centric Brands GP LLC, Membership interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 6.1 [4]   6.1 [4]   11.5 [7]            
Investment, Identifier [Axis]: Chariot Buyer LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 12.3   12.3   12.3            
Less: funded commitments (3.5)   (3.5)   (2.8)            
Total unfunded commitments 8.8   8.8   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 commitments $ 8.8   $ 8.8   $ 9.5            
Investment, Identifier [Axis]: Chariot Buyer LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 6.62% [2]   6.62% [2]   5.75% [1] 6.62% [2] 6.62% [2] 6.62% [2] 5.75% [1] 5.75% [1] 5.75% [1]
Total first lien senior secured loans $ 3.5 [4]   $ 3.5 [4]   $ 0.2 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 3.1 [4]   $ 3.1 [4]   $ 0.2 [7]            
Investment, Identifier [Axis]: Chariot Buyer LLC, First lien senior secured revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         3.60%       3.60% 3.60% 3.60%
Total first lien senior secured loans [7]         $ 2.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 2.5            
Investment, Identifier [Axis]: Chariot Buyer LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.42% [2]   10.42% [2]   7.50% [1] 10.42% [2] 10.42% [2] 10.42% [2] 7.50% [1] 7.50% [1] 7.50% [1]
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]                      
Total investments at fair value $ 126.3 [3],[4]   $ 126.3 [3],[4]   $ 133.0 [6],[7]            
Investment, Identifier [Axis]: Cheyenne Petroleum Chompany Limited Partnership, CPC 2001 LLC and Mill Shoals LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         10.00%       10.00% 10.00% 10.00%
Investment, Identifier [Axis]: Cheyenne Petroleum Company Limited Partnership, CPC 2001 LLC and Mill Shoals LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 12.67%   12.67%     12.67% 12.67% 12.67%      
Total first lien senior secured loans $ 63.1 [3],[4]   $ 63.1 [3],[4]   $ 63.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 63.1 [3],[4]   $ 63.1 [3],[4]   $ 63.1 [6],[7]            
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 14.43% [2]   14.43% [2]   11.75% [1] 14.43% [2] 14.43% [2] 14.43% [2] 11.75% [1] 11.75% [1] 11.75% [1]
Total first lien senior secured loans $ 68.2 [3],[4]   $ 68.2 [3],[4]   $ 68.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 65.5 [3],[4]   $ 65.5 [3],[4]   $ 61.4 [6],[7]            
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 14.43% [2]   14.43% [2]   11.75% [1] 14.43% [2] 14.43% [2] 14.43% [2] 11.75% [1] 11.75% [1] 11.75% [1]
Total first lien senior secured loans $ 30.0 [3],[4]   $ 30.0 [3],[4]   $ 15.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 28.8 [3],[4]   $ 28.8 [3],[4]   13.6 [6],[7]            
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] 14.43%   14.43%     14.43% 14.43% 14.43%      
Total first lien senior secured loans $ 20.0 [3],[4]   $ 20.0 [3],[4]   15.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 19.2 [3],[4]   $ 19.2 [3],[4]   $ 13.9 [6],[7]            
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 14.43% [2]   14.43% [2]   11.75% [1] 14.43% [2] 14.43% [2] 14.43% [2] 11.75% [1] 11.75% [1] 11.75% [1]
Total first lien senior secured loans $ 15.5 [3],[4]   $ 15.5 [3],[4]   $ 20.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 14.8 [3],[4]   $ 14.8 [3],[4]   $ 18.0 [6],[7]            
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 14.43% [2]   14.43% [2]   11.75% [1] 14.43% [2] 14.43% [2] 14.43% [2] 11.75% [1] 11.75% [1] 11.75% [1]
Total first lien senior secured loans $ 15.2 [3],[4]   $ 15.2 [3],[4]   $ 3.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 14.6 [3],[4]   $ 14.6 [3],[4]   $ 2.7 [6],[7]            
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 14.43% [2]   14.43% [2]   11.75% [1] 14.43% [2] 14.43% [2] 14.43% [2] 11.75% [1] 11.75% [1] 11.75% [1]
Total first lien senior secured loans $ 4.9 [3],[4]   $ 4.9 [3],[4]   $ 4.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.7 [3],[4]   $ 4.7 [3],[4]   4.4 [6],[7]            
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] 14.43%   14.43%     14.43% 14.43% 14.43%      
Total first lien senior secured loans $ 3.0 [3],[4]   $ 3.0 [3],[4]   30.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 2.9 [3],[4]   2.9 [3],[4]   27.0 [6],[7]            
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., Warrant                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[8]         3.4            
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., Warrant to purchase up to 718.66 shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] 6.9   6.9                
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            
Total investments at fair value 0.0   0.0   0.0            
Investment, Identifier [Axis]: CoLTs 2005-1 Ltd., Preferred shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [5]   0.0 [5]   0.0 [8]            
Investment, Identifier [Axis]: CoLTs 2005-2 Ltd.                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)         0.0            
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):         0.2            
Net unrealized gains (losses):         0.0            
Total investments at fair value         0.0            
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.8   7.8                
Less: funded commitments (2.5)   (2.5)                
Total unfunded commitments 5.3   5.3                
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 commitments 5.3   5.3                
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         23.7            
Less: funded commitments         (0.6)            
Total unfunded commitments         23.1            
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 commitments         23.1            
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]                      
Total investments at fair value $ 3.5 [4]   $ 3.5 [4]   $ 2.8 [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 8.37% [2]   8.37% [2]   6.00% [1] 8.37% [2] 8.37% [2] 8.37% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 15.8 [3]   $ 15.8 [3]   $ 29.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 15.3 [3]   $ 15.3 [3]   $ 28.8 [6],[7]            
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 [2] 8.37%   8.37%     8.37% 8.37% 8.37%      
Total first lien senior secured loans [3],[4] $ 14.5   $ 14.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 14.1   $ 14.1                
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 8.37% [2]   8.37% [2]   6.00% [1] 8.37% [2] 8.37% [2] 8.37% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 2.5 [3],[4]   $ 2.5 [3],[4]   $ 0.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 2.4 [3],[4]   2.4 [3],[4]   0.6 [6],[7]            
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]                      
Total investments at fair value 0.3 [4]   0.3 [4]   $ 0.3 [7]            
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Cobalt Holdings I, LP, and Cobalt Intermediate I, Inc., Series A preferred shares                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         10.75%       10.75% 10.75% 10.75%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 67.3 [4]   67.3 [4]   $ 60.2 [6],[7]            
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.6   0.6   3.3            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 0.6   0.6   3.3            
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 commitments $ 0.6   $ 0.6   $ 3.3            
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.90% [2]   8.90% [2]   7.25% [1] 8.90% [2] 8.90% [2] 8.90% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 66.0 [3],[4]   $ 66.0 [3],[4]   $ 92.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 66.0 [3],[4]   $ 66.0 [3],[4]   $ 92.8 [6],[7]            
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 13.00% [2]   13.00% [2]   13.00% [1] 13.00% [2] 13.00% [2] 13.00% [2] 13.00% [1] 13.00% [1] 13.00% [1]
Total first lien senior secured loans $ 19.9 [4]   $ 19.9 [4]   $ 19.9 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 19.7 [4]   19.7 [4]   19.9 [7]            
Investment, Identifier [Axis]: Community Brands ParentCo, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.2   7.2                
Less: funded commitments 0.0   0.0                
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 commitments 7.2   7.2                
Investment, Identifier [Axis]: Community Brands ParentCo, LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 7.0   $ 7.0                
Investment, Identifier [Axis]: Community Brands ParentCo, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.88%   8.88%     8.88% 8.88% 8.88%      
Total first lien senior secured loans [3],[4] $ 10.7   $ 10.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 10.4   10.4                
Investment, Identifier [Axis]: Compex Legal Services, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.6   3.6                
Less: funded commitments (2.0)   (2.0)                
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 commitments $ 1.6   $ 1.6                
Investment, Identifier [Axis]: Compex Legal Services, Inc., First lien senior secured revolving 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 [3],[4] $ 2.0   $ 2.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 2.0   2.0                
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 1.9   1.9   1.9            
Less: funded commitments (0.3)   (0.3)   (0.3)            
Total unfunded commitments 1.6   1.6   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 commitments $ 1.6   $ 1.6   $ 1.6            
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.30%   9.30%     9.30% 9.30% 9.30%      
Total first lien senior secured loans [3],[4] $ 0.3   $ 0.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.3   $ 0.3                
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 2.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 2.6            
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.00%       8.00% 8.00% 8.00%
Total first lien senior secured loans [6],[7]         $ 0.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 0.1            
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 0.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 0.6            
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.30% [2]   9.30% [2]   7.00% [1] 9.30% [2] 9.30% [2] 9.30% [2] 7.00% [1] 7.00% [1] 7.00% [1]
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]                      
Total investments at fair value 0.3 [3],[4]   0.3 [3],[4]   0.3 [6],[7]            
Investment, Identifier [Axis]: Concert Golf Partners Holdco LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.1   3.1   0.6            
Less: funded commitments (0.4)   (0.4)   (0.1)            
Total unfunded commitments 2.7   2.7   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 commitments $ 2.7   $ 2.7   $ 0.5            
Investment, Identifier [Axis]: Concert Golf Partners Holdco LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.30% [2]   9.30% [2]   5.50% [1] 9.30% [2] 9.30% [2] 9.30% [2] 5.50% [1] 5.50% [1] 5.50% [1]
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]                      
Total investments at fair value $ 0.4 [3],[4]   $ 0.4 [3],[4]   0.1 [6],[7]            
Investment, Identifier [Axis]: Conservice Midco, LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.87%   10.87%     10.87% 10.87% 10.87%      
Total first lien senior secured loans [4] $ 0.0   $ 0.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 0.0   0.0                
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         20.0            
Less: funded commitments         0.0            
Total unfunded commitments         20.0            
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 commitments         20.0            
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[8]         $ 6.0            
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.25%       6.25% 6.25% 6.25%
Total first lien senior secured loans [7],[8]         $ 27.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[8]         $ 27.5            
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.75%       6.75% 6.75% 6.75%
Total first lien senior secured loans [6],[7],[8]         $ 32.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[8]         $ 32.6            
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.00%       8.00% 8.00% 8.00%
Total first lien senior secured loans [6],[7],[8]         $ 3.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[8]         $ 3.8            
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., First lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.75%       6.75% 6.75% 6.75%
Total first lien senior secured loans [6],[7],[8]         $ 11.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[8]         $ 11.2            
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 13.9   13.9                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 13.9   13.9                
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 commitments 13.9   13.9                
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] $ 7.1   $ 7.1                
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 [2] 9.45%   9.45%     9.45% 9.45% 9.45%      
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 [3],[4],[5] $ 11.7   $ 11.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 11.5   $ 11.5                
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 [2] 9.42%   9.42%     9.42% 9.42% 9.42%      
Total first lien senior secured loans [3],[4],[5] $ 15.0   $ 15.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 14.7   $ 14.7                
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 [2] 7.55%   7.55%     7.55% 7.55% 7.55%      
Total first lien senior secured loans [4],[5] $ 24.7   $ 24.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] $ 24.2   $ 24.2                
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.45%   9.45%     9.45% 9.45% 9.45%      
Total first lien senior secured loans [3],[4],[5] $ 60.0   $ 60.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] 58.8   58.8                
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]                      
Total investments at fair value [4],[5] $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Continental Acquisition Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.42% [2]   10.42% [2]   7.75% [1] 10.42% [2] 10.42% [2] 10.42% [2] 7.75% [1] 7.75% [1] 7.75% [1]
Total first lien senior secured loans $ 36.2 [3],[4]   $ 36.2 [3],[4]   $ 36.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 35.5 [3],[4]   $ 35.5 [3],[4]   $ 36.5 [6],[7]            
Investment, Identifier [Axis]: Continental Acquisition Holdings, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.42% [2]   10.42% [2]   7.75% [1] 10.42% [2] 10.42% [2] 10.42% [2] 7.75% [1] 7.75% [1] 7.75% [1]
Total first lien senior secured loans $ 5.4 [3],[4]   $ 5.4 [3],[4]   $ 33.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 5.3 [3],[4]   5.3 [3],[4]   $ 33.2 [6],[7]            
Investment, Identifier [Axis]: Continental Cafe, LLC and Infinity Ovation Yacht Charters, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.00%       8.00% 8.00% 8.00%
Total first lien senior secured loans [6],[7]         $ 15.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         15.5            
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 8.0   8.0                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 8.0   8.0                
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 commitments $ 8.0   $ 8.0                
Investment, Identifier [Axis]: Continental Café, LLC and Infinity Ovation Yacht Charters, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         8.0            
Less: funded commitments         0.0            
Total unfunded commitments         8.0            
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 commitments         $ 8.0            
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] 10.12%   10.12%     10.12% 10.12% 10.12%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.1   0.1                
Investment, Identifier [Axis]: Convera International Holdings Limited and Convera International Financial S.A R.L. | Revolving and delayed draw loan commitments                      
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 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]                      
Coupon | Rate [2] 9.30%   9.30%     9.30% 9.30% 9.30%      
Total first lien senior secured loans [3],[4],[5] $ 63.0   $ 63.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 63.0   $ 63.0                
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         5.50%       5.50% 5.50% 5.50%
Total first lien senior secured loans [6]         $ 2.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         2.7            
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.87%   7.87%     7.87% 7.87% 7.87%      
Total first lien senior secured loans [3],[4],[5] $ 2.7   $ 2.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 2.7   $ 2.7                
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.87%   7.87%     7.87% 7.87% 7.87%      
Total first lien senior secured loans [3],[4],[5] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] 0.1   0.1                
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP | Revolving and delayed draw loan commitments                      
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 commitments $ 38.9   $ 38.9   38.9            
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 6.63%   6.63%     6.63% 6.63% 6.63%      
Total first lien senior secured loans [3],[4] $ 4.1   $ 4.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 3.3   3.3                
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP, Limited partnership units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 62.4 [4]   $ 62.4 [4]   $ 77.9 [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 9.63% [2]   9.63% [2]   7.00% [1] 9.63% [2] 9.63% [2] 9.63% [2] 7.00% [1] 7.00% [1] 7.00% [1]
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]                      
Total investments at fair value 132.3 [3],[4]   132.3 [3],[4]   155.7 [6],[7]            
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc. and Cority Parent, Inc., Common equity                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc. and Cority Parent, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.81%   8.81%     8.81% 8.81% 8.81%      
Total first lien senior secured loans [3],[4],[5] $ 16.5   $ 16.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 16.5   $ 16.5                
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 [2] 7.28%   7.28%     7.28% 7.28% 7.28%      
Total first lien senior secured loans [3],[4],[5] $ 4.4   $ 4.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 4.4   $ 4.4                
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 [2] 9.28%   9.28%     9.28% 9.28% 9.28%      
Total first lien senior secured loans [3],[4],[5] $ 1.1   $ 1.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 1.1   $ 1.1                
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 [2] 7.28%   7.28%     7.28% 7.28% 7.28%      
Total first lien senior secured loans [3],[4],[5] $ 6.3   $ 6.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] 6.3   6.3                
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc. and Cority Parent, Inc., Preferred equity                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] 0.6   0.6                
Investment, Identifier [Axis]: Cority Software Inc., Cority Software (USA) Inc., and Cority Parent, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 6.2   6.2                
Less: funded commitments 0.0   0.0                
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 commitments 6.2   6.2                
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc. | Revolving and delayed draw loan commitments                      
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 commitments         0.1            
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., Common equity                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[8]         $ 0.0            
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.00%       6.00% 6.00% 6.00%
Total first lien senior secured loans [6],[8]         $ 6.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[8]         $ 6.3            
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.00%       6.00% 6.00% 6.00%
Total first lien senior secured loans [6],[8]         $ 4.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[8]         $ 4.4            
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.00%       8.00% 8.00% 8.00%
Total first lien senior secured loans [6],[7],[8]         $ 1.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[8]         1.1            
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., Preferred equity                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[8]         0.6            
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 38.7   38.7   38.7            
Less: funded commitments (22.7)   (22.7)   (0.1)            
Total unfunded commitments 16.0   16.0   38.6            
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 commitments 16.0   16.0   38.6            
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Class A-1 common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 15.1 [4]   $ 15.1 [4]   $ 13.3 [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 6.21% [2]   6.21% [2]   0.00% [1] 6.21% [2] 6.21% [2] 6.21% [2] 0.00% [1] 0.00% [1] 0.00% [1]
Total first lien senior secured loans [4],[13] $ 21.9   $ 21.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 20.2 [4],[13]   $ 20.2 [4],[13]   $ 0.0 [16]            
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.62% [2]   9.62% [2]   7.00% [1] 9.62% [2] 9.62% [2] 9.62% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 137.5 [3],[4]   $ 137.5 [3],[4]   $ 137.5 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 125.1 [3],[4]   125.1 [3],[4]   135.4 [6]            
Investment, Identifier [Axis]: Cornerstone OnDemand, Inc. and Sunshine Software Holdings, Inc., Series A preferred shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 111.4 [4]   111.4 [4]   119.0 [7]            
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 22.2   22.2                
Less: funded commitments (1.5)   (1.5)                
Total unfunded commitments 20.7   20.7                
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 commitments 20.7   20.7                
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, Class A-2 units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 5.8   $ 5.8                
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.56%   7.56%     7.56% 7.56% 7.56%      
Total first lien senior secured loans [3],[4] $ 8.7   $ 8.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 8.7   $ 8.7                
Investment, Identifier [Axis]: Covaris Intermediate 3, LLC & Covaris Parent, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.37%   8.37%     8.37% 8.37% 8.37%      
Total first lien senior secured loans [3],[4] $ 1.5   $ 1.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 1.5   1.5                
Investment, Identifier [Axis]: Coyote Buyer, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 8.3   8.3                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 8.3   8.3                
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 commitments $ 8.3   $ 8.3                
Investment, Identifier [Axis]: Coyote Buyer, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.81%   8.81%     8.81% 8.81% 8.81%      
Total first lien senior secured loans [3],[4] $ 0.8   $ 0.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.7   $ 0.7                
Investment, Identifier [Axis]: Coyote Buyer, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 11.67%   11.67%     11.67% 11.67% 11.67%      
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.2   0.2                
Investment, Identifier [Axis]: Cozzini Bros., Inc. and BH-Sharp Holdings LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         15.0            
Less: funded commitments         0.0            
Total unfunded commitments         15.0            
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 commitments         15.0            
Investment, Identifier [Axis]: Cozzini Bros., Inc. and BH-Sharp Holdings LP, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 1.4            
Investment, Identifier [Axis]: Cozzini Bros., Inc. and BH-Sharp Holdings LP, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6],[7]         $ 12.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         11.4            
Investment, Identifier [Axis]: CrossCountry Mortgage, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 56.3   56.3   56.3            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 56.3   56.3   56.3            
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 commitments $ 56.3   $ 56.3   $ 56.3            
Investment, Identifier [Axis]: CrossCountry Mortgage, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.07% [2]   10.07% [2]   7.50% [1] 10.07% [2] 10.07% [2] 10.07% [2] 7.50% [1] 7.50% [1] 7.50% [1]
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]                      
Total investments at fair value 92.8 [3],[4]   92.8 [3],[4]   92.8 [6],[7]            
Investment, Identifier [Axis]: Crown CT Parent Inc., Crown CT HoldCo Inc. and Crown CT Management LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.2   3.2                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 3.2   3.2                
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 commitments 3.2   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]                      
Total investments at fair value [4] 2.0   2.0                
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]                      
Total investments at fair value [4] $ 0.3   $ 0.3                
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 [2] 8.67%   8.67%     8.67% 8.67% 8.67%      
Total first lien senior secured loans [3],[4] $ 24.6   $ 24.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 24.6   24.6                
Investment, Identifier [Axis]: Crown Health Care Laundry Services, LLC and Crown Laundry Holdings, LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)         0.0            
Redemptions (cost)         27.2            
Sales (cost)         4.5            
Interest income         (0.5)            
Capital structuring service fees         0.0            
Dividend income         0.0            
Other income         0.9            
Net realized gains (losses):         10.7            
Net unrealized gains (losses):         (8.0)            
Total investments at fair value         0.0            
Investment, Identifier [Axis]: DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Series A preferred shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         138.1            
Investment, Identifier [Axis]: DCert Preferred Holdings, Inc. and Destiny Digital Holdings, L.P., Series A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         13.4            
Investment, Identifier [Axis]: DFC Global Facility Borrower III LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 94.7   94.7   103.5            
Less: funded commitments (76.0)   (76.0)   (73.2)            
Total unfunded commitments 18.7   18.7   30.3            
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 commitments $ 18.7   $ 18.7   $ 30.3            
Investment, Identifier [Axis]: DFC Global Facility Borrower III LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.06% [2]   10.06% [2]   8.50% [1] 10.06% [2] 10.06% [2] 10.06% [2] 8.50% [1] 8.50% [1] 8.50% [1]
Total first lien senior secured loans $ 152.0 [3],[4],[5],[17]   $ 152.0 [3],[4],[5],[17]   $ 146.4 [6],[7],[8],[18]            
Participating interest sold 79.3   79.3   75.0            
Secured borrowings 79.3   79.3   73.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 152.0 [3],[4],[5],[17]   $ 152.0 [3],[4],[5],[17]   $ 146.4 [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 10.06%   10.06%   8.50% 10.06% 10.06% 10.06% 8.50% 8.50% 8.50%
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.62% [2]   10.62% [2]   8.50% [1] 10.62% [2] 10.62% [2] 10.62% [2] 8.50% [1] 8.50% [1] 8.50% [1]
Total first lien senior secured loans $ 165.3 [3]   $ 165.3 [3]   $ 166.7 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 165.3 [3]   $ 165.3 [3]   $ 158.4 [6]            
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.62% [2]   10.62% [2]   8.50% [1] 10.62% [2] 10.62% [2] 10.62% [2] 8.50% [1] 8.50% [1] 8.50% [1]
Total first lien senior secured loans $ 6.5 [3],[4]   $ 6.5 [3],[4]   $ 4.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 6.5 [3],[4]   $ 6.5 [3],[4]   $ 4.1 [6],[7]            
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.62% [2]   10.62% [2]   8.50% [1] 10.62% [2] 10.62% [2] 10.62% [2] 8.50% [1] 8.50% [1] 8.50% [1]
Total first lien senior secured loans $ 4.3 [3],[4]   $ 4.3 [3],[4]   $ 5.0 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 4.3 [3],[4]   4.3 [3],[4]   $ 4.7 [6]            
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6]         $ 0.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         0.6            
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc. | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value $ 8.4 [4]   $ 8.4 [4]   $ 11.3 [7]            
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.87% [2]   8.87% [2]   6.75% [1] 8.87% [2] 8.87% [2] 8.87% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 28.9 [3],[4]   $ 28.9 [3],[4]   $ 29.8 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 28.1 [3],[4]   $ 28.1 [3],[4]   $ 29.8 [6]            
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 8.87% [2]   8.87% [2]   6.75% [1] 8.87% [2] 8.87% [2] 8.87% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 26.7 [3],[4]   $ 26.7 [3],[4]   $ 46.7 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 25.9 [3],[4]   25.9 [3],[4]   46.7 [6]            
Investment, Identifier [Axis]: DS Admiral Bidco, LLC | Revolving and delayed draw loan commitments                      
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 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 8.56% [2]   8.56% [2]   6.75% [1] 8.56% [2] 8.56% [2] 8.56% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 11.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   11.9 [6],[7]            
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         6.6            
Less: funded commitments         (5.2)            
Total unfunded commitments         1.4            
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 commitments         1.4            
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., Class A common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 6.5 [4]   6.5 [4]   4.2 [7]            
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., Class B common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0 [4]   $ 0.0 [4]   $ 0.0 [7]            
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.75%       6.75% 6.75% 6.75%
Total first lien senior secured loans [7],[14]         $ 0.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[14]         $ 0.3            
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., First lien senior secured revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         4.65%       4.65% 4.65% 4.65%
Total first lien senior secured loans [7],[14]         $ 4.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[14]         $ 4.8            
Investment, Identifier [Axis]: Datix Bidco Limited, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 6.01% [2]   6.01% [2]   4.18% [1] 6.01% [2] 6.01% [2] 6.01% [2] 4.18% [1] 4.18% [1] 4.18% [1]
Total first lien senior secured loans $ 0.1 [4],[5]   $ 0.1 [4],[5]   $ 0.1 [7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0 [4],[5]   $ 0.0 [4],[5]   0.1 [7],[8]            
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 [2] 9.90%   9.90%     9.90% 9.90% 9.90%      
Total first lien senior secured loans [4] $ 8.8   $ 8.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 8.5   8.5                
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]                      
Total investments at fair value [4] 132.9   132.9                
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]                      
Total investments at fair value [4] 12.4   12.4                
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 16.5   16.5   16.5            
Less: funded commitments (14.1)   (14.1)   (2.4)            
Total unfunded commitments 2.4   2.4   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 commitments 2.4   2.4   14.1            
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 9.3 [4]   $ 9.3 [4]   $ 10.0 [7]            
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.17% [2]   10.17% [2]   9.00% [1] 10.17% [2] 10.17% [2] 10.17% [2] 9.00% [1] 9.00% [1] 9.00% [1]
Total first lien senior secured loans $ 148.9 [3],[4]   $ 148.9 [3],[4]   $ 148.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 147.3 [3],[4]   $ 147.3 [3],[4]   $ 148.5 [6],[7]            
Investment, Identifier [Axis]: DecoPac, Inc. and KCAKE Holdings Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.67% [2]   9.67% [2]   7.00% [1] 9.67% [2] 9.67% [2] 9.67% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 14.1 [3],[4]   $ 14.1 [3],[4]   $ 2.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 14.0 [3],[4]   14.0 [3],[4]   $ 2.4 [6],[7]            
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 11.4   11.4                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 11.4   11.4                
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 commitments 11.4   11.4                
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 2.5   $ 2.5                
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.79% [2]   8.79% [2]   7.00% [1] 8.79% [2] 8.79% [2] 8.79% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 1.2 [3],[4]   $ 1.2 [3],[4]   $ 37.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.2 [3],[4]   $ 1.2 [3],[4]   36.9 [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 [2] 8.79%   8.79%     8.79% 8.79% 8.79%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.1   0.1                
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Topco LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         5.4            
Less: funded commitments         0.0            
Total unfunded commitments         5.4            
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 commitments         5.4            
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Topco LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         2.5            
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.2   2.2   9.7            
Less: funded commitments (1.2)   (1.2)   0.0            
Total unfunded commitments 1.0   1.0   9.7            
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 commitments $ 1.0   $ 1.0   $ 9.7            
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.25%       7.25% 7.25% 7.25%
Total first lien senior secured loans [6]         $ 33.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 33.0            
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.13%   9.13%     9.13% 9.13% 9.13%      
Total first lien senior secured loans [3],[4] $ 36.0   $ 36.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 35.3   $ 35.3                
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.13% [2]   9.13% [2]   6.75% [1] 9.13% [2] 9.13% [2] 9.13% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 2.0 [3],[4]   $ 2.0 [3],[4]   $ 8.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.0 [3],[4]   $ 2.0 [3],[4]   $ 8.9 [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 8.63% [2]   8.63% [2]   6.75% [1] 8.63% [2] 8.63% [2] 8.63% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 11.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 11.4 [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 8.63% [2]   8.63% [2]   7.25% [1] 8.63% [2] 8.63% [2] 8.63% [2] 7.25% [1] 7.25% [1] 7.25% [1]
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]                      
Total investments at 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 revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.49% [2]   8.49% [2]   0.00% [1] 8.49% [2] 8.49% [2] 8.49% [2] 0.00% [1] 0.00% [1] 0.00% [1]
Total first lien senior secured loans [3],[4],[13] $ 1.1   $ 1.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.1 [3],[4],[13]   1.1 [3],[4],[13]   $ 0.0 [16]            
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., Preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 14.3 [4]   14.3 [4]   13.8 [7]            
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc. | Revolving and delayed draw loan commitments                      
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 commitments 2.3   2.3   2.3            
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., Common units                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [7]         600.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.1 [4]   $ 1.1 [4]   $ 1.0 [7]            
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.77% [2]   8.77% [2]   6.65% [1] 8.77% [2] 8.77% [2] 8.77% [2] 6.65% [1] 6.65% [1] 6.65% [1]
Total first lien senior secured loans $ 15.9 [3],[4]   $ 15.9 [3],[4]   $ 16.0 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 15.9 [3],[4]   $ 15.9 [3],[4]   $ 16.0 [6]            
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 8.77% [2]   8.77% [2]   6.65% [1] 8.77% [2] 8.77% [2] 8.77% [2] 6.65% [1] 6.65% [1] 6.65% [1]
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]                      
Total investments at 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 8.77% [2]   8.77% [2]   6.65% [1] 8.77% [2] 8.77% [2] 8.77% [2] 6.65% [1] 6.65% [1] 6.65% [1]
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]                      
Total investments at 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]                      
Total investments at fair value $ 40.6 [4]   $ 40.6 [4]   $ 37.9 [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 11.37% [2]   11.37% [2]   8.35% [1] 11.37% [2] 11.37% [2] 11.37% [2] 8.35% [1] 8.35% [1] 8.35% [1]
Total first lien senior secured loans $ 25.0 [4]   $ 25.0 [4]   $ 25.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 24.5 [4]   24.5 [4]   25.0            
Investment, Identifier [Axis]: Dye & Durham Corporation | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 17.8   17.8   19.5            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 17.8   17.8   19.5            
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 commitments $ 17.8   $ 17.8   $ 19.5            
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.62% [2]   8.62% [2]   6.50% [1] 8.62% [2] 8.62% [2] 8.62% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 39.2 [3],[4],[5]   $ 39.2 [3],[4],[5]   $ 72.0 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 39.2 [3],[4],[5]   39.2 [3],[4],[5]   70.9 [6],[7],[8]            
Investment, Identifier [Axis]: Dynamic NC Aerospace Holdings, LLC and Dynamic NC Investment Holdings, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.1   7.1   7.1            
Less: funded commitments (1.4)   (1.4)   0.0            
Total unfunded commitments 5.7   5.7   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 commitments 5.7   5.7   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]                      
Total investments at fair value $ 8.3   $ 8.3   $ 8.6            
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 10.17% [2]   10.17% [2]   7.50% [1] 10.17% [2] 10.17% [2] 10.17% [2] 7.50% [1] 7.50% [1] 7.50% [1]
Total first lien senior secured loans $ 25.7 [3],[4]   $ 25.7 [3],[4]   $ 25.7 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 25.4 [3],[4]   $ 25.4 [3],[4]   25.4 [6]            
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 [2] 9.06%   9.06%     9.06% 9.06% 9.06%      
Total first lien senior secured loans [3],[4] $ 1.4   $ 1.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 1.4   1.4                
Investment, Identifier [Axis]: EP Purchaser, LLC and TPG VIII EP Co-Invest II, L.P., Partnership units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 11.6 [4],[5]   $ 11.6 [4],[5]   $ 9.8 [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 10.17% [2]   10.17% [2]   7.00% [1] 10.17% [2] 10.17% [2] 10.17% [2] 7.00% [1] 7.00% [1] 7.00% [1]
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]                      
Total investments at fair value 174.3 [3],[4]   174.3 [3],[4]   176.1 [6],[7]            
Investment, Identifier [Axis]: EP Wealth Advisors, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 1.6   1.6   2.8            
Less: funded commitments (0.7)   (0.7)   (0.2)            
Total unfunded commitments 0.9   0.9   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 commitments $ 0.9   $ 0.9   $ 2.6            
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.93% [2]   7.93% [2]   5.50% [1] 7.93% [2] 7.93% [2] 7.93% [2] 5.50% [1] 5.50% [1] 5.50% [1]
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]                      
Total investments at fair value $ 1.5 [3],[4]   $ 1.5 [3],[4]   $ 0.2 [6],[7]            
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.17% [2]   8.17% [2]   6.25% [1] 8.17% [2] 8.17% [2] 8.17% [2] 6.25% [1] 6.25% [1] 6.25% [1]
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]                      
Total investments at fair value $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 0.3 [6],[7]            
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.17% [2]   8.17% [2]   5.50% [1] 8.17% [2] 8.17% [2] 8.17% [2] 5.50% [1] 5.50% [1] 5.50% [1]
Total first lien senior secured loans $ 0.7 [3],[4]   $ 0.7 [3],[4]   $ 0.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.7 [3],[4]   0.7 [3],[4]   0.2 [6],[7]            
Investment, Identifier [Axis]: EPS NASS Parent, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 1.5   1.5   6.6            
Less: funded commitments (0.6)   (0.6)   (0.9)            
Total unfunded commitments 0.9   0.9   5.7            
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 commitments $ 0.9   $ 0.9   $ 5.7            
Investment, Identifier [Axis]: EPS NASS Parent, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.42% [2]   9.42% [2]   6.75% [1] 9.42% [2] 9.42% [2] 9.42% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 30.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 30.5 [6],[7]            
Investment, Identifier [Axis]: EPS NASS Parent, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.40% [2]   9.40% [2]   6.75% [1] 9.40% [2] 9.40% [2] 9.40% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.6 [3],[4],[13]   $ 0.6 [3],[4],[13]   $ 0.9 [6],[7],[14]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.6 [3],[4],[13]   0.6 [3],[4],[13]   0.9 [6],[7],[14]            
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     2.3   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):     (2.6)   (0.3)            
Total investments at fair value 2.4   2.4   2.8            
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         2.8            
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC, Class A-1 units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 2.3   2.3                
Investment, Identifier [Axis]: ESCP PPG Holdings, LLC, Class A-2 units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1   0.1                
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P. | Revolving and delayed draw loan commitments                      
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 commitments $ 1.1   $ 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 [2] 8.96%   8.96%     8.96% 8.96% 8.96%      
Total first lien senior secured loans [3],[4] $ 6.8   $ 6.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 6.7   6.7                
Investment, Identifier [Axis]: ESHA Research, LLC and RMCF VI CIV XLVIII, L.P., Limited partner interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 4.8   4.8                
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     8.2   3.5            
Redemptions (cost)     0.0   0.0            
Sales (cost)     0.0   0.0            
Interest income     0.0   2.5            
Capital structuring service fees     0.0   0.0            
Dividend income     0.0   0.0            
Other income     0.0   0.0            
Net realized gains (losses):     0.1   0.0            
Net unrealized gains (losses):     (29.1)   (8.1)            
Total investments at fair value 2.3   2.3   23.1            
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 16.4   16.4   6.9            
Less: funded commitments (15.9)   (15.9)   (6.7)            
Total unfunded commitments 0.5   0.5   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   (0.2)            
Total net adjusted unfunded revolving and delayed draw commitments 0.5   0.5   0.0            
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC, Class A common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.0 [7]            
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans 28.8 [4],[9]   28.8 [4],[9]   26.3 [7],[10]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.5 [4],[9]   1.5 [4],[9]   18.4 [7],[10]            
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans 15.9 [4],[9]   15.9 [4],[9]   6.7 [7],[10]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.8 [4],[9]   0.8 [4],[9]   4.7 [7],[10]            
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc, Preferred equity                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 6.0   6.0                
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 8.1   8.1   4.1            
Less: funded commitments (4.1)   (4.1)   (2.3)            
Total unfunded commitments 4.0   4.0   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 commitments $ 4.0   $ 4.0   $ 1.8            
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6]         $ 62.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         61.9            
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.01%   9.01%     9.01% 9.01% 9.01%      
Total first lien senior secured loans [3],[4] $ 61.5   $ 61.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 60.3   $ 60.3                
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.79%   8.79%     8.79% 8.79% 8.79%      
Total first lien senior secured loans $ 5.8 [3],[4]   $ 5.8 [3],[4]   20.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 5.6 [3],[4]   $ 5.6 [3],[4]   $ 20.5 [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 [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6],[7]         $ 2.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         2.3            
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.57%   8.57%     8.57% 8.57% 8.57%      
Total first lien senior secured loans [3],[4] $ 3.1   $ 3.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 3.0   $ 3.0                
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.75%   10.75%     10.75% 10.75% 10.75%      
Total first lien senior secured loans [3] $ 1.0   $ 1.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] 1.0   1.0                
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., Preferred equity                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         $ 5.5            
Investment, Identifier [Axis]: Elemica Parent, Inc. h& EZ Elemica Holdings, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         $ 14.2            
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 17.4   17.4                
Less: funded commitments (1.4)   (1.4)                
Total unfunded commitments 16.0   16.0                
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 commitments $ 16.0   $ 16.0                
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.43% [2]   9.43% [2]   7.00% [1] 9.43% [2] 9.43% [2] 9.43% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 8.8 [3],[4]   $ 8.8 [3],[4]   $ 8.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 8.8 [3],[4]   $ 8.8 [3],[4]   $ 8.7 [6],[7]            
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.84% [2]   8.84% [2]   6.50% [1] 8.84% [2] 8.84% [2] 8.84% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 10.3 [3],[4]   $ 10.3 [3],[4]   $ 0.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 10.3 [3],[4]   $ 10.3 [3],[4]   $ 0.3 [6],[7]            
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 5.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         5.2            
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.16%   9.16%     9.16% 9.16% 9.16%      
Total first lien senior secured loans [3],[4],[13] $ 1.4   $ 1.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[13] 1.4   1.4                
Investment, Identifier [Axis]: Emergency Communications Network, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 6.7   6.7   6.5            
Less: funded commitments (6.7)   (6.7)   0.0            
Total unfunded commitments 0.0   0.0   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 commitments $ 0.0   $ 0.0   $ 6.5            
Investment, Identifier [Axis]: Emergency Communications Network, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.33% [2]   10.33% [2]   8.75% [1] 10.33% [2] 10.33% [2] 10.33% [2] 8.75% [1] 8.75% [1] 8.75% [1]
Total first lien senior secured loans $ 47.8 [3],[4]   $ 47.8 [3],[4]   $ 46.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 43.0 [3],[4]   $ 43.0 [3],[4]   42.4 [6],[7]            
Investment, Identifier [Axis]: Emergency Communications Network, LLC, First lien senior secured revolving 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 [3],[4] $ 6.7   $ 6.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 6.1   $ 6.1                
Investment, Identifier [Axis]: Ensemble RCM, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.81%   7.81%     7.81% 7.81% 7.81%      
Total first lien senior secured loans [3] $ 2.5   $ 2.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] 2.5   2.5                
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 14.5   14.5   14.5            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 14.5   14.5   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 commitments $ 14.5   $ 14.5   $ 14.5            
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6],[7]         $ 4.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 4.6            
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.19%   7.19%     7.19% 7.19% 7.19%      
Total first lien senior secured loans [4] $ 5.2   $ 5.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 5.1   $ 5.1                
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.42% [2]   9.42% [2]   5.75% [1] 9.42% [2] 9.42% [2] 9.42% [2] 5.75% [1] 5.75% [1] 5.75% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 6.0 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 6.0 [7]            
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.42% [2]   9.42% [2]   6.50% [1] 9.42% [2] 9.42% [2] 9.42% [2] 6.50% [1] 6.50% [1] 6.50% [1]
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]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]            
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 39.4   39.4   53.3            
Less: funded commitments (6.2)   (6.2)   (1.0)            
Total unfunded commitments 33.2   33.2   52.3            
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 commitments 33.2   33.2   52.3            
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 37.8 [4]   $ 37.8 [4]   $ 34.4 [7]            
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.03%   8.03%     8.03% 8.03% 8.03%      
Total first lien senior secured loans [3],[4] $ 78.3   $ 78.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 77.5   $ 77.5                
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 [1]         6.75%       6.75% 6.75% 6.75%
Total first lien senior secured loans [6],[7]         $ 72.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 72.7            
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 8.03% [2]   8.03% [2]   6.75% [1] 8.03% [2] 8.03% [2] 8.03% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 48.3 [3],[4]   $ 48.3 [3],[4]   $ 80.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 47.8 [3],[4]   $ 47.8 [3],[4]   $ 80.4 [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 [2] 8.07%   8.07%     8.07% 8.07% 8.07%      
Total first lien senior secured loans [3],[4] $ 13.8   $ 13.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 13.7   13.7                
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]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: European Capital UK SME Debt LP                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     0.0   0.0            
Redemptions (cost)     0.8   7.7            
Sales (cost)     0.0   0.0            
Interest income     0.0   0.0            
Capital structuring service fees     0.0   0.0            
Dividend income     0.8   0.4            
Other income     0.0   0.0            
Net realized gains (losses):     0.0   0.0            
Net unrealized gains (losses):     (2.4)   4.9            
Total investments at fair value 23.7   23.7   26.9            
Investment, Identifier [Axis]: European Capital UK SME Debt LP | Private equity commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 50.3   50.3   60.9            
Less: funded commitments (45.5)   (45.5)   (55.1)            
Total unfunded commitments 4.8   4.8   5.8            
Less: commitments substantially at discretion of the Company (4.8)   (4.8)   (5.8)            
Total net adjusted unfunded revolving and delayed draw 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]                      
Total investments at fair value 23.7 [5]   23.7 [5]   26.9 [8],[19]            
Investment, Identifier [Axis]: Everspin Technologies, Inc., Warrant to purchase shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 0.0            
Investment, Identifier [Axis]: Everspin Technologies, Inc., Warrant to purchase up to 18,461 shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Evolent Health LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.20%   9.20%     9.20% 9.20% 9.20%      
Total first lien senior secured loans [3],[4],[5] $ 7.8   $ 7.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 7.7   $ 7.7                
Investment, Identifier [Axis]: Excelligence Holdings Corp., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.67% [2]   9.67% [2]   7.00% [1] 9.67% [2] 9.67% [2] 9.67% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 9.1 [3],[4]   $ 9.1 [3],[4]   $ 9.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 9.1 [3],[4]   9.1 [3],[4]   $ 9.3 [6],[7]            
Investment, Identifier [Axis]: Explorer Investor, Inc | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.3   0.3                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 0.3   0.3                
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 commitments $ 0.3   $ 0.3                
Investment, Identifier [Axis]: Explorer Investor, Inc, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.03%   9.03%     9.03% 9.03% 9.03%      
Total first lien senior secured loans [3],[4] $ 1.2   $ 1.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 1.1   1.1                
Investment, Identifier [Axis]: ExtraHop Networks, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6],[7]         $ 16.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 16.4            
Investment, Identifier [Axis]: ExtraHop Networks, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6],[7]         $ 1.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         1.0            
Investment, Identifier [Axis]: Extrahop Networks, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 6.6   6.6   8.5            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 6.6   6.6   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 commitments $ 6.6   $ 6.6   8.5            
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 11.17%   11.17%     11.17% 11.17% 11.17%      
Total first lien senior secured loans [3],[4] $ 16.6   $ 16.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 16.6   $ 16.6                
Investment, Identifier [Axis]: Extrahop Networks, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 11.17%   11.17%     11.17% 11.17% 11.17%      
Total first lien senior secured loans [3],[4] $ 3.0   $ 3.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 3.0   3.0                
Investment, Identifier [Axis]: FL Hawk Intermediate Holdings, Inc. | Revolving and delayed draw loan commitments                      
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 commitments 0.5   0.5   0.5            
Investment, Identifier [Axis]: FM:Systems Group, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 1.5   1.5   1.5            
Less: funded commitments 0.0   0.0   (1.5)            
Total unfunded commitments 1.5   1.5   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 commitments $ 1.5   $ 1.5   $ 0.0            
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.50%       7.50% 7.50% 7.50%
Total first lien senior secured loans [6],[7]         $ 3.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 3.2            
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.13%   9.13%     9.13% 9.13% 9.13%      
Total first lien senior secured loans [3],[4] $ 3.2   $ 3.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 3.2   $ 3.2                
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.05% [2]   9.05% [2]   7.50% [1] 9.05% [2] 9.05% [2] 9.05% [2] 7.50% [1] 7.50% [1] 7.50% [1]
Total first lien senior secured loans $ 1.4 [3],[4]   $ 1.4 [3],[4]   $ 1.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.4 [3],[4]   1.4 [3],[4]   $ 1.4 [6],[7]            
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.50%       7.50% 7.50% 7.50%
Total first lien senior secured loans [6],[7]         $ 1.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         1.5            
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value $ 28.2 [4]   $ 28.2 [4]   $ 19.2 [7]            
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.28% [2]   8.28% [2]   5.36% [1] 8.28% [2] 8.28% [2] 8.28% [2] 5.36% [1] 5.36% [1] 5.36% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   $ 0.1 [7]            
Investment, Identifier [Axis]: FS Squared Holding Corp. and FS Squared, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: Faraday&Future Inc., FF Inc., Faraday SPE, LLC and Faraday Future Intelligent Electric Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [7]         80.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         80.3            
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]                      
Total investments at fair value [7]         $ 1.2            
Investment, Identifier [Axis]: Faraday&Future Inc., FF Inc., Faraday SPE, LLC and Faraday Future Intelligent Electric Inc., Warrant to purchase up to 633,008 shares of Class A common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 0.2   0.2                
Investment, Identifier [Axis]: Ferrellgas, L.P. and Ferrellgas Partners L.P., Class B units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 14.9   $ 14.9                
Investment, Identifier [Axis]: Ferrellgas, L.P. and Ferrellgas Partners L.P., Senior preferred units                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.96%   8.96%     8.96% 8.96% 8.96%      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 60.0   $ 60.0                
Investment, Identifier [Axis]: Ferrellgas, L.P., Senior preferred units                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.96%       8.96% 8.96% 8.96%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         $ 55.7            
Investment, Identifier [Axis]: First Insight, Inc., Warrant to purchase units of Series C preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: First Insight, Inc., Warrant to purchase up to 122,827 units of Series C preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 14.5   14.5   10.0            
Less: funded commitments (6.2)   (6.2)   (4.9)            
Total unfunded commitments 8.3   8.3   5.1            
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 commitments $ 8.3   $ 8.3   $ 5.1            
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.02% [2]   8.02% [2]   5.50% [1] 8.02% [2] 8.02% [2] 8.02% [2] 5.50% [1] 5.50% [1] 5.50% [1]
Total first lien senior secured loans $ 29.7 [3],[4]   $ 29.7 [3],[4]   $ 30.0 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 29.7 [3],[4]   $ 29.7 [3],[4]   $ 29.3 [6]            
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.02% [2]   8.02% [2]   5.50% [1] 8.02% [2] 8.02% [2] 8.02% [2] 5.50% [1] 5.50% [1] 5.50% [1]
Total first lien senior secured loans $ 1.1 [3],[4]   $ 1.1 [3],[4]   $ 1.1 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.1 [3],[4]   $ 1.1 [3],[4]   $ 1.1 [6]            
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.30% [2]   8.30% [2]   5.50% [1] 8.30% [2] 8.30% [2] 8.30% [2] 5.50% [1] 5.50% [1] 5.50% [1]
Total first lien senior secured loans $ 6.1 [3],[4],[13]   $ 6.1 [3],[4],[13]   $ 4.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 6.1 [3],[4],[13]   6.1 [3],[4],[13]   4.8 [6],[7]            
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., Series A preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.4 [4]   $ 1.4 [4]   $ 1.1 [7]            
Investment, Identifier [Axis]: Florida Food Products, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.12% [2]   8.12% [2]   5.75% [1] 8.12% [2] 8.12% [2] 8.12% [2] 5.75% [1] 5.75% [1] 5.75% [1]
Total first lien senior secured loans $ 14.3 [3],[4]   $ 14.3 [3],[4]   $ 4.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 13.8 [3],[4]   $ 13.8 [3],[4]   $ 4.3 [6],[7]            
Investment, Identifier [Axis]: Florida Food Products, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.03%   8.03%     8.03% 8.03% 8.03%      
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.4   $ 0.4                
Investment, Identifier [Axis]: Florida Food Products, LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.12% [2]   11.12% [2]   8.75% [1] 11.12% [2] 11.12% [2] 11.12% [2] 8.75% [1] 8.75% [1] 8.75% [1]
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]                      
Total investments at fair value 69.6 [3],[4]   69.6 [3],[4]   71.1 [6],[7]            
Investment, Identifier [Axis]: Flow Control Solutions, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         6.0            
Less: funded commitments         0.0            
Total unfunded commitments         6.0            
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 commitments         $ 6.0            
Investment, Identifier [Axis]: Flow Control Solutions, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6]         $ 10.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         10.8            
Investment, Identifier [Axis]: Forescout Technologies, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 14.2   14.2   0.1            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 14.2   14.2   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 commitments 14.2   14.2   0.1            
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [6],[7]         18.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 18.5            
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [3],[4] 23.2   23.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 23.2   23.2                
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [3],[4] 12.3   12.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 12.3   $ 12.3                
Investment, Identifier [Axis]: Foundation Consumer Brands, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.43% [2]   8.43% [2]   7.38% [1] 8.43% [2] 8.43% [2] 8.43% [2] 7.38% [1] 7.38% [1] 7.38% [1]
Total first lien senior secured loans $ 13.0 [3],[4]   $ 13.0 [3],[4]   $ 24.9 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 13.0 [3],[4]   13.0 [3],[4]   24.8 [6]            
Investment, Identifier [Axis]: Foundation Risk Partners, Corp. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 48.7   48.7   38.1            
Less: funded commitments (1.1)   (1.1)   0.0            
Total unfunded commitments 47.6   47.6   38.1            
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 commitments $ 47.6   $ 47.6   $ 38.1            
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.17% [2]   9.17% [2]   6.50% [1] 9.17% [2] 9.17% [2] 9.17% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 133.0 [3],[4]   $ 133.0 [3],[4]   $ 169.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 133.0 [3],[4]   $ 133.0 [3],[4]   167.7 [6],[7]            
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.75%   8.75%     8.75% 8.75% 8.75%      
Total first lien senior secured loans [3],[4] $ 33.2   $ 33.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 33.2   $ 33.2                
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.74%   8.74%     8.74% 8.74% 8.74%      
Total first lien senior secured loans [3] $ 1.1   $ 1.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] 1.1   1.1                
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC, Class A preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 7.2   7.2   6.7            
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC, Class B common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 8.4   $ 8.4   $ 7.9            
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.25%       6.25% 6.25% 6.25%
Total first lien senior secured loans [6]         $ 14.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 14.9            
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 11.00%   11.00%     11.00% 11.00% 11.00%      
Total first lien senior secured loans [3],[4] $ 14.7   $ 14.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 14.7   $ 14.7                
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.00% [2]   11.00% [2]   6.25% [1] 11.00% [2] 11.00% [2] 11.00% [2] 6.25% [1] 6.25% [1] 6.25% [1]
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]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]            
Investment, Identifier [Axis]: GF Parent LLC, Class A common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: GF Parent LLC, Class A preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: GF Parent LLC, Class B common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: GHX Ultimate Parent Corporation, Commerce Parent, Inc. and Commerce Topco, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 47.5   47.5   47.5            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 47.5   47.5   47.5            
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 commitments 47.5   47.5   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]                      
Total investments at fair value $ 28.5 [4]   $ 28.5 [4]   $ 32.2 [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 9.63% [2]   9.63% [2]   7.50% [1] 9.63% [2] 9.63% [2] 9.63% [2] 7.50% [1] 7.50% [1] 7.50% [1]
Total first lien senior secured loans $ 114.1 [3],[4]   $ 114.1 [3],[4]   $ 114.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 110.7 [3],[4]   110.7 [3],[4]   114.0 [6],[7]            
Investment, Identifier [Axis]: GI Ranger Intermediate LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 11.0   11.0   9.0            
Less: funded commitments (0.4)   (0.4)   0.0            
Total unfunded commitments 10.6   10.6   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 commitments $ 10.6   $ 10.6   $ 9.0            
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.70% [2]   9.70% [2]   6.75% [1] 9.70% [2] 9.70% [2] 9.70% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 40.2 [3],[4]   $ 40.2 [3],[4]   $ 35.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 39.8 [3],[4]   $ 39.8 [3],[4]   34.8 [6],[7]            
Investment, Identifier [Axis]: GI Ranger Intermediate 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 [3],[4] $ 0.4   $ 0.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.4   0.4                
Investment, Identifier [Axis]: GNZ Energy Bidco Limited and Galileo Co-Investment | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.8   2.8                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 2.8   2.8                
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 commitments 2.8   2.8                
Investment, Identifier [Axis]: GNZ Energy Bidco Limited and Galileo Co-investment Trust I, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] $ 9.9   $ 9.9                
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 [2] 10.65%   10.65%     10.65% 10.65% 10.65%      
Total first lien senior secured loans [3],[4],[5] $ 27.3   $ 27.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] 26.8   26.8                
Investment, Identifier [Axis]: GPM Investments, LLC and ARKO Corp., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 25.5   25.5   18.3            
Investment, Identifier [Axis]: GPM Investments, LLC and ARKO Corp., Warrant to purchase common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         1.9            
Investment, Identifier [Axis]: GPM Investments, LLC and ARKO Corp., Warrant to purchase up to 1,088,780 units of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 1.9   1.9                
Investment, Identifier [Axis]: GSV PracticeTek Holdings, LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 13.6   13.6                
Investment, Identifier [Axis]: Galway Borrower LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 14.2   14.2   23.3            
Less: funded commitments (0.4)   (0.4)   (0.4)            
Total unfunded commitments 13.8   13.8   22.9            
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 commitments $ 13.8   $ 13.8   $ 22.9            
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.92% [2]   8.92% [2]   6.00% [1] 8.92% [2] 8.92% [2] 8.92% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 31.7 [3],[4]   $ 31.7 [3],[4]   $ 59.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 31.0 [3],[4]   $ 31.0 [3],[4]   $ 58.5 [6],[7]            
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.92%   8.92%     8.92% 8.92% 8.92%      
Total first lien senior secured loans [3] $ 4.2   $ 4.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] 4.1   4.1                
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: Garden Fresh Restaurant Corp. and GFRC Holdings LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         7.5            
Less: funded commitments         (7.5)            
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 commitments         0.0            
Investment, Identifier [Axis]: Garden Fresh Restaurant Corp. and GFRC Holdings LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [7],[10]         21.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[10]         0.0            
Investment, Identifier [Axis]: Garden Fresh Restaurant Corp. and GFRC Holdings LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [7],[10]         7.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[10]         0.0            
Investment, Identifier [Axis]: Gehl Foods, LLC and GF Parent LLC, Class A common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Gehl Foods, LLC and GF Parent LLC, Class A preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Gehl Foods, LLC and GF Parent LLC, Class B common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co. | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value $ 1.4 [4]   $ 1.4 [4]   $ 0.9 [7]            
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         5.25%       5.25% 5.25% 5.25%
Total first lien senior secured loans [6],[7]         $ 9.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 9.0            
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.42%   8.42%     8.42% 8.42% 8.42%      
Total first lien senior secured loans [3],[4] $ 9.0   $ 9.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 9.0   $ 9.0                
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.92% [2]   7.92% [2]   4.22% [1] 7.92% [2] 7.92% [2] 7.92% [2] 4.22% [1] 4.22% [1] 4.22% [1]
Total first lien senior secured loans $ 0.2 [4]   $ 0.2 [4]   $ 0.2 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.2 [4]   $ 0.2 [4]   $ 0.2 [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 7.92% [2]   7.92% [2]   4.22% [1] 7.92% [2] 7.92% [2] 7.92% [2] 4.22% [1] 4.22% [1] 4.22% [1]
Total first lien senior secured loans $ 1.5 [4]   $ 1.5 [4]   $ 1.5 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.5 [4]   $ 1.5 [4]   $ 1.5 [7]            
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.25%       8.25% 8.25% 8.25%
Total first lien senior secured loans [6],[7]         $ 21.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 20.7            
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.79%   9.79%     9.79% 9.79% 9.79%      
Total first lien senior secured loans [4] $ 32.4   $ 32.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 32.0   $ 32.0                
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.79% [2]   9.79% [2]   7.63% [1] 9.79% [2] 9.79% [2] 9.79% [2] 7.63% [1] 7.63% [1] 7.63% [1]
Total first lien senior secured loans $ 21.1 [3],[4]   $ 21.1 [3],[4]   $ 32.4 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 20.9 [3],[4]   $ 20.9 [3],[4]   $ 31.4 [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 9.79% [2]   9.79% [2]   7.70% [1] 9.79% [2] 9.79% [2] 9.79% [2] 7.70% [1] 7.70% [1] 7.70% [1]
Total first lien senior secured loans $ 7.5 [4]   $ 7.5 [4]   $ 7.5 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 7.4 [4]   7.4 [4]   7.3 [7]            
Investment, Identifier [Axis]: Genomatica, Inc., Warrant to purchase 322,422 shares of Series D preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Genomatica, Inc., Warrant to purchase shares of Series D preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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 [2] 7.37%   7.37%     7.37% 7.37% 7.37%      
Total first lien senior secured loans [3],[4],[11] $ 10.8   $ 10.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[11] $ 9.3   $ 9.3                
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 6.81%   6.81%     6.81% 6.81% 6.81%      
Total first lien senior secured loans [3],[4],[11] $ 25.2   $ 25.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[11] $ 21.8   $ 21.8                
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.76% [2]   9.76% [2]   7.50% [1] 9.76% [2] 9.76% [2] 9.76% [2] 7.50% [1] 7.50% [1] 7.50% [1]
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]                      
Total investments at fair value 83.0 [3],[4]   83.0 [3],[4]   94.5 [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]                      
Total investments at fair value [7]         3.0            
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]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Warrant to purchase up to 1,926.57 units of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 0.0   0.0                
Investment, Identifier [Axis]: Global Medical Response, Inc. and GMR Buyer Corp., Warrant to purchase up to 115,733 units of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 2.2   2.2                
Investment, Identifier [Axis]: Global Music Rights, LLC | Revolving and delayed draw loan commitments                      
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 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 9.17% [2]   9.17% [2]   6.50% [1] 9.17% [2] 9.17% [2] 9.17% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 22.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   22.1 [6],[7]            
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 33.8   33.8                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 33.8   33.8                
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 commitments $ 33.8   $ 33.8                
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.18%   10.18%     10.18% 10.18% 10.18%      
Total first lien senior secured loans [3],[4] $ 17.7   $ 17.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 17.5   $ 17.5                
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, Series E-1 preferred stock                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 600.00%   600.00%     600.00% 600.00% 600.00%      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 14.2   $ 14.2                
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, Warrant to purchase up to 43,154 shares of Series E-1 preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: GraphPAD Software, LLC, Insightful Science Intermediate I, LLC and Insightful Science Holdings, LLC | Revolving and delayed draw loan commitments                      
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 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 [2] 7.00%   7.00%     7.00% 7.00% 7.00%      
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.2   $ 0.2                
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 [2] 9.17%   9.17%     9.17% 9.17% 9.17%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.1   $ 0.1                
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 [2] 9.17%   9.17%     9.17% 9.17% 9.17%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.1   $ 0.1                
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 [2] 8.31%   8.31%     8.31% 8.31% 8.31%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.1   0.1                
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]                      
Total investments at fair value 57.5   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 [4] 43.5   43.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 41.6   41.6                
Investment, Identifier [Axis]: Green Street Parent, LLC and Green Street Intermediate Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.3   0.3   0.3            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 0.3   0.3   0.3            
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 commitments $ 0.3   $ 0.3   $ 0.3            
Investment, Identifier [Axis]: Green Street Parent, LLC and Green Street Intermediate Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.62% [2]   8.62% [2]   6.50% [1] 8.62% [2] 8.62% [2] 8.62% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 23.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   23.7 [6],[7]            
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 3.9   $ 3.9   $ 6.8            
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 6.21% [2]   6.21% [2]   6.00% [1] 6.21% [2] 6.21% [2] 6.21% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 26.4 [4],[11]   $ 26.4 [4],[11]   $ 75.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 20.5 [4],[11]   $ 20.5 [4],[11]   $ 75.0 [6],[7]            
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 6.52%   6.52%     6.52% 6.52% 6.52%      
Total first lien senior secured loans [4],[11] $ 3.3   $ 3.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[11] $ 2.6   $ 2.6                
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.52%   7.52%     7.52% 7.52% 7.52%      
Total first lien senior secured loans [3],[4],[11] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[11] $ 0.1   $ 0.1                
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.12% [2]   10.12% [2]   7.10% [1] 10.12% [2] 10.12% [2] 10.12% [2] 7.10% [1] 7.10% [1] 7.10% [1]
Total first lien senior secured loans $ 73.0 [4]   $ 73.0 [4]   $ 73.0 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 61.3 [4]   61.3 [4]   73.0 [7]            
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC | Revolving and delayed draw loan commitments                      
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 commitments 19.0   19.0   19.0            
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.5 [4]   $ 2.5 [4]   $ 2.3 [7]            
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.37% [2]   8.37% [2]   6.00% [1] 8.37% [2] 8.37% [2] 8.37% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 60.7 [3],[4]   $ 60.7 [3],[4]   $ 61.0 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 60.7 [3],[4]   $ 60.7 [3],[4]   $ 61.0 [6]            
Investment, Identifier [Axis]: HAI Acquisition Corporation and Aloha Topco, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.37% [2]   8.37% [2]   6.00% [1] 8.37% [2] 8.37% [2] 8.37% [2] 6.00% [1] 6.00% [1] 6.00% [1]
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]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]            
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   (0.1)            
Total investments at fair value 0.0   0.0   0.0            
Investment, Identifier [Axis]: HCI Equity, LLC, Member interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [5],[11]   0.0 [5],[11]   0.0 [8],[12]            
Investment, Identifier [Axis]: HGC Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.5   7.5                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 7.5   7.5                
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 commitments 7.5   7.5                
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 15.9   15.9   18.1            
Less: funded commitments (2.3)   (2.3)   (0.5)            
Total unfunded commitments 13.6   13.6   17.6            
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 commitments 13.6   13.6   17.6            
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.3 [4]   $ 2.3 [4]   $ 2.9 [7]            
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.00% [2]   9.00% [2]   6.50% [1] 9.00% [2] 9.00% [2] 9.00% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 4.7 [3],[4]   $ 4.7 [3],[4]   $ 2.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.6 [3],[4]   $ 4.6 [3],[4]   $ 2.6 [6],[7]            
Investment, Identifier [Axis]: HH-Stella, Inc. and Bedrock Parent Holdings, LP, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.63% [2]   8.63% [2]   6.50% [1] 8.63% [2] 8.63% [2] 8.63% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 2.3 [3],[4]   $ 2.3 [3],[4]   $ 0.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 2.2 [3],[4]   2.2 [3],[4]   0.5 [6],[7]            
Investment, Identifier [Axis]: Halcon Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.9   2.9   6.8            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 2.9   2.9   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 commitments $ 2.9   $ 2.9   $ 6.8            
Investment, Identifier [Axis]: Halcon Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.67% [2]   10.67% [2]   7.17% [1] 10.67% [2] 10.67% [2] 10.67% [2] 7.17% [1] 7.17% [1] 7.17% [1]
Total first lien senior secured loans $ 10.5 [4]   $ 10.5 [4]   $ 19.0 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 10.5 [4]   10.5 [4]   18.9 [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            
Total investments at fair value 0.0   0.0   0.0            
Investment, Identifier [Axis]: Halex Holdings, Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.0            
Investment, Identifier [Axis]: Harvey Tool Company, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 28.5   28.5   29.5            
Less: funded commitments 0.0   0.0   (5.9)            
Total unfunded commitments 28.5   28.5   23.6            
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 commitments $ 28.5   $ 28.5   $ 23.6            
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.11% [2]   9.11% [2]   6.25% [1] 9.11% [2] 9.11% [2] 9.11% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 23.5 [3],[4]   $ 23.5 [3],[4]   $ 22.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 23.3 [3],[4]   23.3 [3],[4]   $ 22.5 [6],[7]            
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.25%       6.25% 6.25% 6.25%
Total first lien senior secured loans [6],[7],[14]         $ 5.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   5.8 [6],[7],[14]            
Investment, Identifier [Axis]: HealthEdge Sgoftware, Inc., First lien senior secured loan                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         79.2            
Investment, Identifier [Axis]: HealthEdge Software, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 36.7   36.7   42.3            
Less: funded commitments (0.3)   (0.3)   (0.3)            
Total unfunded commitments 36.4   36.4   42.0            
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 commitments $ 36.4   $ 36.4   $ 42.0            
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.48% [2]   10.48% [2]   7.25% [1] 10.48% [2] 10.48% [2] 10.48% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 84.8 [3],[4]   $ 84.8 [3],[4]   $ 79.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 84.8   84.8                
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC | Revolving and delayed draw loan commitments                      
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 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 8.02% [2]   8.02% [2]   6.50% [1] 8.02% [2] 8.02% [2] 8.02% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 40.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   40.5 [6],[7]            
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)         41.7            
Redemptions (cost)         8.5            
Sales (cost)         0.0            
Interest income         1.5            
Capital structuring service fees         0.7            
Dividend income         0.4            
Other income         0.0            
Net realized gains (losses):         0.2            
Net unrealized gains (losses):         9.3            
Total investments at fair value         69.4            
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         51.0            
Less: funded commitments         0.0            
Total unfunded commitments         51.0            
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 commitments         51.0            
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     95.4                
Redemptions (cost)     0.0                
Sales (cost)     0.0                
Interest income     5.0                
Capital structuring service fees     1.7                
Dividend income     0.0                
Other income     0.0                
Net realized gains (losses):     0.0                
Net unrealized gains (losses):     32.6                
Total investments at fair value 191.5   191.5                
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 8.5   8.5                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 8.5   8.5                
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 commitments 8.5   8.5                
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC, Class A1 units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 81.0   81.0                
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC and Heelstone Renewable Energy Investors, LLC, Class A2 units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.0   $ 4.0                
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] 10.75%   10.75%     10.75% 10.75% 10.75%      
Total first lien senior secured loans [3],[4] $ 106.5   $ 106.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 106.5   106.5                
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC, Class A1 units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         $ 30.4            
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.00%       8.00% 8.00% 8.00%
Total first lien senior secured loans [6],[7]         $ 39.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         39.0            
Investment, Identifier [Axis]: Help/Systems Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         7.5            
Less: funded commitments         0.0            
Total unfunded commitments         7.5            
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 commitments         7.5            
Investment, Identifier [Axis]: Help/Systems Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.5   7.5                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 7.5   7.5                
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 commitments 7.5   7.5                
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 33.3   33.3   8.0            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 33.3   33.3   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 commitments $ 33.3   $ 33.3   $ 8.0            
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.81% [2]   8.81% [2]   6.75% [1] 8.81% [2] 8.81% [2] 8.81% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 34.6 [3],[4]   $ 34.6 [3],[4]   $ 55.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 34.2 [3],[4]   $ 34.2 [3],[4]   $ 54.5 [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 8.83% [2]   8.83% [2]   6.75% [1] 8.83% [2] 8.83% [2] 8.83% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 12.3 [3],[4]   $ 12.3 [3],[4]   $ 10.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 12.2 [3],[4]   $ 12.2 [3],[4]   10.3 [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 [2] 8.21%   8.21%     8.21% 8.21% 8.21%      
Total first lien senior secured loans [3],[4] $ 6.9   $ 6.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 6.8   6.8                
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, Series A common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 7.0 [4]   7.0 [4]   11.1 [7]            
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, Series A preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 102.5 [4]   102.5 [4]   101.2 [7]            
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, Series C common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 7.5 [4]   $ 7.5 [4]   11.9 [7]            
Investment, Identifier [Axis]: HighTower Holding, LLC, Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 6.75%   6.75%     6.75% 6.75% 6.75%      
Total first lien senior secured loans [4],[5] $ 8.1   $ 8.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] 6.6   6.6                
Investment, Identifier [Axis]: Highline Aftermarket Acquisition, LLC, Highline Aftermarket SC Acquisition, Inc. and Highline PPC Blocker LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 9.5   9.5   9.5            
Less: funded commitments (1.2)   (1.2)   (5.9)            
Total unfunded commitments 8.3   8.3   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 commitments 8.3   8.3   3.6            
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]                      
Total investments at fair value $ 3.6 [4]   $ 3.6 [4]   $ 3.5 [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 [2] 7.62%   7.62%     7.62% 7.62% 7.62%      
Total first lien senior secured loans [3],[4],[11] $ 12.0   $ 12.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[11] $ 10.7   $ 10.7                
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 6.87% [2]   6.87% [2]   3.85% [1] 6.87% [2] 6.87% [2] 6.87% [2] 3.85% [1] 3.85% [1] 3.85% [1]
Total first lien senior secured loans $ 1.0 [4],[13]   $ 1.0 [4],[13]   $ 5.9 [7],[14]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.9 [4],[13]   $ 0.9 [4],[13]   $ 5.8 [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 10.24% [2]   10.24% [2]   8.75% [1] 10.24% [2] 10.24% [2] 10.24% [2] 8.75% [1] 8.75% [1] 8.75% [1]
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]                      
Total investments at fair value 62.6 [3],[4]   62.6 [3],[4]   66.1 [6],[7]            
Investment, Identifier [Axis]: Hometown Food Company | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.9   3.9   3.9            
Less: funded commitments (0.7)   (0.7)   0.0            
Total unfunded commitments 3.2   3.2   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 commitments $ 3.2   $ 3.2   $ 3.9            
Investment, Identifier [Axis]: Hometown Food Company, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.12%   8.12%     8.12% 8.12% 8.12%      
Total first lien senior secured loans [3],[4],[13] $ 0.7   $ 0.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[13] $ 0.7   $ 0.7                
Investment, Identifier [Axis]: Honor Technology, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 12.63% [2]   12.63% [2]   11.00% [1] 12.63% [2] 12.63% [2] 12.63% [2] 11.00% [1] 11.00% [1] 11.00% [1]
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]                      
Total investments at fair value 2.4 [3],[4]   2.4 [3],[4]   2.5 [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]                      
Total investments at fair value [7]         0.1            
Investment, Identifier [Axis]: Honor Technology, Inc., Warrant to purchase up to 133,333 units of series D-2 preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 0.0   0.0                
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 22.6   22.6   22.6            
Less: funded commitments (7.0)   (7.0)   (1.6)            
Total unfunded commitments 15.6   15.6   21.0            
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 commitments 15.6   15.6   $ 21.0            
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC and GI Insurity TopCo LP, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 6.1   $ 6.1                
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 8.64% [2]   8.64% [2]   6.25% [1] 8.64% [2] 8.64% [2] 8.64% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 60.5 [3],[4]   $ 60.5 [3],[4]   $ 105.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 56.3 [3],[4]   $ 56.3 [3],[4]   $ 104.8 [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 9.17% [2]   9.17% [2]   6.25% [1] 9.17% [2] 9.17% [2] 9.17% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 7.0 [3],[4]   $ 7.0 [3],[4]   $ 1.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 6.5 [3],[4]   6.5 [3],[4]   1.4 [6],[7]            
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 97.1 [4]   97.1 [4]   90.2 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 86.4 [4]   86.4 [4]   88.8 [7]            
Investment, Identifier [Axis]: Huskies Parent, Inc., GI Insurity Parent LLC, and GI Insurity Topco LP, Company units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         8.8            
Investment, Identifier [Axis]: IQN Holding Corp. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.2   7.2                
Less: funded commitments 0.0   0.0                
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 commitments $ 7.2   $ 7.2                
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.41%   8.41%     8.41% 8.41% 8.41%      
Total first lien senior secured loans [3],[4] $ 23.6   $ 23.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 23.3   23.3                
Investment, Identifier [Axis]: IRI Holdings, Inc., IRI Group Holdings, Inc. and IRI Parent, L.P., Class A-1 common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 26.1            
Investment, Identifier [Axis]: IRI Holdings, Inc., IRI Group Holdings, Inc. and IRI Parent, L.P., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         4.35%       4.35% 4.35% 4.35%
Total first lien senior secured loans         $ 42.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         $ 42.3            
Investment, Identifier [Axis]: IRI Holdings, Inc., IRI Group Holdings, Inc. and IRI Parent, L.P., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.10%       8.10% 8.10% 8.10%
Total first lien senior secured loans [7]         $ 86.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         86.8            
Investment, Identifier [Axis]: IRI Holdings, Inc., IRI Group Holdings, Inc. and IRI Parent, L.P., Series A-1 preferred shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         66.0            
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 12.8   12.8                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 12.8   12.8                
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 commitments 12.8   12.8                
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, LLC , Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 10.0   $ 10.0                
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, LLC , First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.31%   9.31%     9.31% 9.31% 9.31%      
Total first lien senior secured loans [3],[4] $ 12.5   $ 12.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 12.3   12.3                
Investment, Identifier [Axis]: ITI Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 5.7   5.7                
Less: funded commitments (1.8)   (1.8)                
Total unfunded commitments 3.9   3.9                
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 commitments $ 3.9   $ 3.9                
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.52%   8.52%     8.52% 8.52% 8.52%      
Total first lien senior secured loans [3],[4] $ 38.2   $ 38.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 37.9   $ 37.9                
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.25%   8.25%     8.25% 8.25% 8.25%      
Total first lien senior secured loans [3],[4] $ 1.1   $ 1.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 1.1   $ 1.1                
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.75%   10.75%     10.75% 10.75% 10.75%      
Total first lien senior secured loans [3] $ 0.7   $ 0.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] 0.7   0.7                
Investment, Identifier [Axis]: IV Rollover Holdings, LLC, Class B units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.1 [7]            
Investment, Identifier [Axis]: IV Rollover Holdings, LLC, Class X units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 2.1 [4]   2.1 [4]   2.2 [7]            
Investment, Identifier [Axis]: IfByPhone Inc., Warrant to purchase shares of Series C preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: IfByPhone Inc., Warrant to purchase up to 124,300 shares of Series C preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     0.0   0.0            
Redemptions (cost)     3.9   0.0            
Sales (cost)     0.0   0.0            
Interest income     1.8   2.4            
Capital structuring service fees     0.6   0.0            
Dividend income     22.9   0.0            
Other income     0.4   0.6            
Net realized gains (losses):     0.0   0.0            
Net unrealized gains (losses):     4.7   8.4            
Total investments at fair value 57.8   57.8   53.0            
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Class A common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.2   0.2   0.2            
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. and Scanner Holdings Corporation, Class B common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.9   $ 1.9   $ 1.4            
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% [2]   14.00% [2]   14.00% [1] 14.00% [2] 14.00% [2] 14.00% [2] 14.00% [1] 14.00% [1] 14.00% [1]
Total first lien senior secured loans $ 16.6 [4]   $ 16.6 [4]   $ 16.6 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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]                      
Total investments at fair value $ 39.1   $ 39.1   $ 34.8            
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.67% [2]   11.67% [2]   8.75% [1] 11.67% [2] 11.67% [2] 11.67% [2] 8.75% [1] 8.75% [1] 8.75% [1]
Total first lien senior secured loans $ 117.0 [3],[4]   $ 117.0 [3],[4]   $ 103.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 105.3 [3],[4]   $ 105.3 [3],[4]   $ 95.1 [6],[7]            
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.67% [2]   11.67% [2]   8.75% [1] 11.67% [2] 11.67% [2] 11.67% [2] 8.75% [1] 8.75% [1] 8.75% [1]
Total first lien senior secured loans $ 5.0 [3],[4]   $ 5.0 [3],[4]   $ 14.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.5 [3],[4]   $ 4.5 [3],[4]   $ 13.0 [6],[7]            
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.67% [2]   11.67% [2]   8.75% [1] 11.67% [2] 11.67% [2] 11.67% [2] 8.75% [1] 8.75% [1] 8.75% [1]
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]                      
Total investments at fair value $ 1.1 [3],[4]   $ 1.1 [3],[4]   $ 1.2 [6],[7]            
Investment, Identifier [Axis]: Implus Footcare, LLC, First lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.75%       8.75% 8.75% 8.75%
Total first lien senior secured loans [6],[7]         $ 5.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 4.6            
Investment, Identifier [Axis]: Imprivata, Inc., Second lien senior secured 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 [3],[4] $ 16.1   $ 16.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 15.3   $ 15.3                
Investment, Identifier [Axis]: Inmar, Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.12% [2]   11.12% [2]   9.00% [1] 11.12% [2] 11.12% [2] 11.12% [2] 9.00% [1] 9.00% [1] 9.00% [1]
Total first lien senior secured loans $ 28.3 [3],[4]   $ 28.3 [3],[4]   $ 28.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 27.7 [3],[4]   27.7 [3],[4]   $ 28.3 [6],[7]            
Investment, Identifier [Axis]: Insightful Science, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 0.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 0.5            
Investment, Identifier [Axis]: Insightful Science, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6],[7]         $ 16.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 16.0            
Investment, Identifier [Axis]: Insightful Science, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6],[7]         $ 7.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 7.9            
Investment, Identifier [Axis]: Insightful Science, First lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6],[7]         $ 7.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         7.5            
Investment, Identifier [Axis]: Insightful Science, Preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         50.5            
Investment, Identifier [Axis]: Insightful Science, Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [7]         39.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         38.8            
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Common stock 2                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 0.0            
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         10.50%       10.50% 10.50% 10.50%
Total first lien senior secured loans [6],[7]         $ 4.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         4.0            
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Senior preferred series A-1 shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         36.4            
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Series B preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Series B preferred stock 2                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Series C preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., Series C preferred stock 2                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: IntraPac International LLC and IntraPac Canada Corporation | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         19.2            
Less: funded commitments         (6.2)            
Total unfunded commitments         13.0            
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 commitments         $ 13.0            
Investment, Identifier [Axis]: IntraPac International LLC and IntraPac Canada Corporation, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.25%       6.25% 6.25% 6.25%
Total first lien senior secured loans [6],[8]         $ 14.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[8]         $ 14.8            
Investment, Identifier [Axis]: IntraPac International LLC and IntraPac Canada Corporation, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.25%       6.25% 6.25% 6.25%
Total first lien senior secured loans [6],[7],[8]         $ 10.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[8]         $ 10.8            
Investment, Identifier [Axis]: IntraPac International LLC and IntraPac Canada Corporation, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.25%       6.25% 6.25% 6.25%
Total first lien senior secured loans [6],[7],[8]         $ 6.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[8]         6.2            
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P.                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     1,260.9   347.5            
Redemptions (cost)     233.2   70.5            
Sales (cost)     0.0   37.0            
Interest income     11.0   2.9            
Capital structuring service fees     0.0   0.0            
Dividend income     150.0   93.0            
Other income     0.0   0.0            
Net realized gains (losses):     0.0   0.0            
Net unrealized gains (losses):     (5.2)   67.3            
Total investments at fair value 1,958.2   1,958.2   935.8            
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P., Member interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1,522.1   $ 1,522.1   $ 919.8 [8]            
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P., Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.56% [2]   9.56% [2]   7.25% [1] 9.56% [2] 9.56% [2] 9.56% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 436.1 [3],[5]   $ 436.1 [3],[5]   $ 16.0 [6],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 436.1 [3],[5]   436.1 [3],[5]   16.0 [6],[8]            
Investment, Identifier [Axis]: JDC Healthcare Management, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.7   4.7   4.4            
Less: funded commitments (4.7)   (4.7)   (4.4)            
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 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 39.7 [4],[9]   39.7 [4],[9]   37.2 [7],[10]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 22.2 [4],[9]   22.2 [4],[9]   26.5 [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 4.7 [4],[9]   4.7 [4],[9]   4.4 [7],[10]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 2.6 [4],[9]   2.6 [4],[9]   3.1 [7],[10]            
Investment, Identifier [Axis]: JWC/KI Holdings, LLC, Membership units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 7.7 [4]   7.7 [4]   7.7 [7]            
Investment, Identifier [Axis]: Javlin Three LLC, Javlin Four LLC, and Javlin Five LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans 15.4 [4],[5],[9]   15.4 [4],[5],[9]   15.7 [7],[8],[10]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [4],[5],[9]   0.0 [4],[5],[9]   0.4 [7],[8],[10]            
Investment, Identifier [Axis]: Jenny C Acquisition, Inc., Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans 1.5 [4]   1.5 [4]   1.4 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.5 [4]   $ 1.5 [4]   1.4 [7]            
Investment, Identifier [Axis]: Jim N Nicks Management, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         4.8            
Less: funded commitments         (2.8)            
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 commitments         $ 2.0            
Investment, Identifier [Axis]: Jim N Nicks Management, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.25%       6.25% 6.25% 6.25%
Total first lien senior secured loans [6]         $ 14.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 14.7            
Investment, Identifier [Axis]: Jim N Nicks Management, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.25%       6.25% 6.25% 6.25%
Total first lien senior secured loans [6],[7]         $ 2.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         2.8            
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.99%   9.99%     9.99% 9.99% 9.99%      
Total first lien senior secured loans [3],[4] $ 19.2   $ 19.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 18.6   18.6                
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., Series A convertible preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 4.5   4.5                
Investment, Identifier [Axis]: Johnnie-O Inc. and Johnnie-O Holdings Inc., Warrant to purchase up to 76,491 shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 2.2   2.2                
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   0.0            
Redemptions (cost)     0.3   0.3            
Sales (cost)     0.0   0.0            
Interest income     0.1   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            
Total investments at fair value 0.0   0.0   0.3            
Investment, Identifier [Axis]: Joyce Lane Capital LLC and Joyce Lane Financing SPV LLC (fka Ciena Capital LLC) | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         1.4            
Less: funded commitments         0.0            
Total unfunded commitments         1.4            
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 commitments         1.4            
Investment, Identifier [Axis]: Joyce Lane Capital LLC and Joyce Lane Financing SPV LLC (fka Ciena Capital LLC), Equity interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [5]   0.0 [5]   $ 0.0 [7],[8]            
Investment, Identifier [Axis]: Joyce Lane Capital LLC and Joyce Lane Financing SPV LLC (fka Ciena Capital LLC), First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         4.13%       4.13% 4.13% 4.13%
Total first lien senior secured loans [7],[8]         $ 0.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[8]         0.3            
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 9.1   9.1   10.9            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 9.1   9.1   10.9            
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 commitments 9.1   9.1   10.9            
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.8 [4]   $ 2.8 [4]   $ 1.6 [7]            
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.67% [2]   8.67% [2]   6.00% [1] 8.67% [2] 8.67% [2] 8.67% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 50.6 [3],[4]   $ 50.6 [3],[4]   $ 0.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 50.6 [3],[4]   $ 50.6 [3],[4]   $ 0.6 [6],[7]            
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.67% [2]   8.67% [2]   6.00% [1] 8.67% [2] 8.67% [2] 8.67% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 2.3 [3],[4]   $ 2.3 [3],[4]   $ 51.0 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.3 [3],[4]   $ 2.3 [3],[4]   $ 51.0 [6]            
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.27% [2]   8.27% [2]   6.00% [1] 8.27% [2] 8.27% [2] 8.27% [2] 6.00% [1] 6.00% [1] 6.00% [1]
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]                      
Total investments at fair value 0.2 [3],[4]   0.2 [3],[4]   $ 0.2 [6],[7]            
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: KBHS Acquisition, LLC (d/b/a Alita Care, LLC) | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 5.0   5.0   5.0            
Less: funded commitments (1.8)   (1.8)   (0.8)            
Total unfunded commitments 3.2   3.2   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 commitments $ 3.2   $ 3.2   $ 4.2            
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] 7.88%   7.88%     7.88% 7.88% 7.88%      
Total first lien senior secured loans [3],[4] $ 1.8   $ 1.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 1.8   $ 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 [1]         6.00%       6.00% 6.00% 6.00%
Total first lien senior secured loans [6],[7]         $ 0.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 0.8            
Investment, Identifier [Axis]: KC Culinarte Intermediate, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 6.87% [2]   6.87% [2]   4.75% [1] 6.87% [2] 6.87% [2] 6.87% [2] 4.75% [1] 4.75% [1] 4.75% [1]
Total first lien senior secured loans $ 28.9 [3]   $ 28.9 [3]   $ 29.1 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 27.4 [3]   $ 27.4 [3]   $ 27.6 [6]            
Investment, Identifier [Axis]: KC Culinarte Intermediate, LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.87% [2]   10.87% [2]   8.75% [1] 10.87% [2] 10.87% [2] 10.87% [2] 8.75% [1] 8.75% [1] 8.75% [1]
Total first lien senior secured loans $ 35.7 [3],[4]   $ 35.7 [3],[4]   $ 35.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 32.8 [3],[4]   $ 32.8 [3],[4]   32.0 [6],[7]            
Investment, Identifier [Axis]: KNPC HoldCo, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.47%   8.47%     8.47% 8.47% 8.47%      
Total first lien senior secured loans [3] $ 5.6   $ 5.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] 5.5   5.5                
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 3.3   $ 3.3   $ 0.9            
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.53% [2]   8.53% [2]   7.00% [1] 8.53% [2] 8.53% [2] 8.53% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 12.6 [3],[4]   $ 12.6 [3],[4]   $ 12.6 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 12.6 [3],[4]   $ 12.6 [3],[4]   $ 12.3 [6]            
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.53% [2]   8.53% [2]   7.00% [1] 8.53% [2] 8.53% [2] 8.53% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 3.4 [3],[4]   $ 3.4 [3],[4]   $ 3.4 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 3.4 [3],[4]   3.4 [3],[4]   3.3 [6]            
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc, Preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 38.0   38.0                
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 31.2   31.2                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 31.2   31.2                
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 commitments $ 31.2   $ 31.2                
Investment, Identifier [Axis]: Kaseya Inc. and Knockout Intermediate Holdings I Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.29%   8.29%     8.29% 8.29% 8.29%      
Total first lien senior secured loans [3],[4] $ 167.0   $ 167.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 163.7   $ 163.7                
Investment, Identifier [Axis]: Kellermeyer Bergensons Services, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         23.0            
Less: funded commitments         0.0            
Total unfunded commitments         23.0            
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 commitments         $ 23.0            
Investment, Identifier [Axis]: Kellermeyer Bergensons Services, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.81% [2]   8.81% [2]   6.75% [1] 8.81% [2] 8.81% [2] 8.81% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 81.9 [3],[4]   $ 81.9 [3],[4]   $ 60.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 78.6 [3],[4]   $ 78.6 [3],[4]   $ 60.8 [6],[7]            
Investment, Identifier [Axis]: Kellermeyer Bergensons Services, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.81% [2]   8.81% [2]   6.75% [1] 8.81% [2] 8.81% [2] 8.81% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 21.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   21.1 [6],[7]            
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P. | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value $ 5.7 [4]   $ 5.7 [4]   $ 5.3 [7]            
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.92% [2]   7.92% [2]   5.25% [1] 7.92% [2] 7.92% [2] 7.92% [2] 5.25% [1] 5.25% [1] 5.25% [1]
Total first lien senior secured loans $ 40.7 [3],[4]   $ 40.7 [3],[4]   $ 41.1 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 40.3 [3],[4]   40.3 [3],[4]   $ 41.1 [6]            
Investment, Identifier [Axis]: Kene Acquisition, Inc. and Kene Holdings, L.P., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans 58.5 [4]   58.5 [4]   54.3 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 58.5 [4]   58.5 [4]   52.7 [7]            
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 [4]   7.8 [4]   7.2 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 7.8 [4]   7.8 [4]   7.0 [7]            
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Warrant to purchase Class C interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         4.2            
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Warrant to purchase up to 24.7581 Class C interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 8.6   8.6                
Investment, Identifier [Axis]: LJP Purchaser, Inc. and LJP Topco, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.4   4.4                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 4.4   4.4                
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 commitments 4.4   4.4                
Investment, Identifier [Axis]: LJP Purchaser, Inc. and LJP Topco, LP, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 5.1   $ 5.1                
Investment, Identifier [Axis]: LJP Purchaser, Inc. and LJP Topco, LP, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.16%   9.16%     9.16% 9.16% 9.16%      
Total first lien senior secured loans [3],[4] $ 8.5   $ 8.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 8.3   8.3                
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Membership units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 3.2 [5]   $ 3.2 [5]   $ 3.5 [8]            
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         10.50%       10.50% 10.50% 10.50%
Total first lien senior secured loans [7],[8]         $ 37.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[8]         $ 37.0            
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.50%   10.50%     10.50% 10.50% 10.50%      
Total first lien senior secured loans [4],[5] $ 3.0   $ 3.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] $ 3.0   $ 3.0                
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.50% [2]   10.50% [2]   10.50% [1] 10.50% [2] 10.50% [2] 10.50% [2] 10.50% [1] 10.50% [1] 10.50% [1]
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]                      
Total investments at fair value 37.0 [4],[5]   37.0 [4],[5]   3.0 [7],[8]            
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 19.1   19.1   16.2            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 19.1   19.1   16.2            
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 commitments $ 19.1   $ 19.1   $ 16.2            
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.80% [2]   8.80% [2]   7.00% [1] 8.80% [2] 8.80% [2] 8.80% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 12.7 [3],[4]   $ 12.7 [3],[4]   $ 6.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 12.5 [3],[4]   $ 12.5 [3],[4]   6.8 [6],[7]            
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] 8.26%   8.26%     8.26% 8.26% 8.26%      
Total first lien senior secured loans [3],[4] $ 6.3   $ 6.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 6.2   $ 6.2                
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] 8.81%   8.81%     8.81% 8.81% 8.81%      
Total first lien senior secured loans [3],[4] $ 5.0   $ 5.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 4.9   4.9                
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, Membership interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 14.4   14.4   2.8            
Investment, Identifier [Axis]: LTG Acquisition, Inc., Class A membership units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.0            
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 41.3   41.3   44.6            
Less: funded commitments (3.9)   (3.9)   0.0            
Total unfunded commitments 37.4   37.4   44.6            
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 commitments 37.4   37.4   44.6            
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.7 [4]   $ 4.7 [4]   $ 4.1 [7]            
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.75%       6.75% 6.75% 6.75%
Total first lien senior secured loans [6]         $ 21.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 21.6            
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.49%   8.49%     8.49% 8.49% 8.49%      
Total first lien senior secured loans [3],[4] $ 23.2   $ 23.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 22.5   $ 22.5                
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.70% [2]   8.70% [2]   6.75% [1] 8.70% [2] 8.70% [2] 8.70% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 16.7 [3]   $ 16.7 [3]   $ 25.5 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 16.2 [3]   $ 16.2 [3]   $ 25.5 [6]            
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.81% [2]   8.81% [2]   6.75% [1] 8.81% [2] 8.81% [2] 8.81% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 4.4 [3],[4]   $ 4.4 [3],[4]   $ 0.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.3 [3],[4]   $ 4.3 [3],[4]   $ 0.1 [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 8.70% [2]   8.70% [2]   6.75% [1] 8.70% [2] 8.70% [2] 8.70% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 10.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.1 [3],[4]   $ 0.1 [3],[4]   10.7 [6],[7]            
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured revolving 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 [3],[4] $ 3.9   $ 3.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 3.8   3.8                
Investment, Identifier [Axis]: Lakers Buyer, Inc. and Lakers Parent LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         11.1            
Less: funded commitments         (3.6)            
Total unfunded commitments         7.5            
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 commitments         7.5            
Investment, Identifier [Axis]: Lakers Buyer, Inc. and Lakers Parent LLC, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         6.2            
Investment, Identifier [Axis]: Lakers Buyer, Inc. and Lakers Parent LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [6],[7]         51.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 51.2            
Investment, Identifier [Axis]: Lakers Buyer, Inc. and Lakers Parent LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.75%       6.75% 6.75% 6.75%
Total first lien senior secured loans [6],[7]         $ 3.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         3.6            
Investment, Identifier [Axis]: Lakers Buyer, Inc. and Lakers Parent LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [6],[7]         40.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         40.1            
Investment, Identifier [Axis]: Largest Portfolio Company Investment | Senior Direct Lending Program                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans 380.0   380.0   $ 342.0            
Investment, Identifier [Axis]: LeanTaaS Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 55.3   55.3                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 55.3   55.3                
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 commitments $ 55.3   $ 55.3                
Investment, Identifier [Axis]: LeanTaas Holdings, Inc., 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 [3],[4] $ 30.5   $ 30.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 29.9   29.9                
Investment, Identifier [Axis]: Len the Plumber, LLC, LTP Neffsville, LLC, LTP of NJ, LLC, and LTP LSI, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 9.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         9.0            
Investment, Identifier [Axis]: Lew's Intermediate Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.3   2.3   2.3            
Less: funded commitments (1.3)   (1.3)   (1.8)            
Total unfunded commitments 1.0   1.0   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 commitments $ 1.0   $ 1.0   $ 0.5            
Investment, Identifier [Axis]: Lew's Intermediate Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.90% [2]   7.90% [2]   5.75% [1] 7.90% [2] 7.90% [2] 7.90% [2] 5.75% [1] 5.75% [1] 5.75% [1]
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]                      
Total investments at fair value $ 0.9 [3],[4]   $ 0.9 [3],[4]   $ 1.0 [6],[7]            
Investment, Identifier [Axis]: Lew's Intermediate Holdings, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.13% [2]   7.13% [2]   4.14% [1] 7.13% [2] 7.13% [2] 7.13% [2] 4.14% [1] 4.14% [1] 4.14% [1]
Total first lien senior secured loans $ 1.3 [4]   $ 1.3 [4]   $ 1.8 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.2 [4]   1.2 [4]   1.8 [7]            
Investment, Identifier [Axis]: Lido Advisors, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.8   0.8   0.8            
Less: funded commitments (0.2)   (0.2)   0.0            
Total unfunded commitments 0.6   0.6   0.8            
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 commitments $ 0.6   $ 0.6   $ 0.8            
Investment, Identifier [Axis]: Lido Advisors, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.44%   7.44%     7.44% 7.44% 7.44%      
Total first lien senior secured loans [3] $ 0.2   $ 0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] $ 0.2   $ 0.2                
Investment, Identifier [Axis]: Lifescan Global Corporation, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.29%   8.29%     8.29% 8.29% 8.29%      
Total first lien senior secured loans [4] $ 14.7   $ 14.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 12.3   $ 12.3                
Investment, Identifier [Axis]: Lifescan Global Corporation, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 11.79%   11.79%     11.79% 11.79% 11.79%      
Total first lien senior secured loans [4] $ 0.2   $ 0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 0.2   0.2                
Investment, Identifier [Axis]: Lower ACS, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 25.9   25.9                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 25.9   25.9                
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 commitments $ 25.9   $ 25.9                
Investment, Identifier [Axis]: Lower ACS, Inc., 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 [3],[4] $ 5.4   $ 5.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 5.4   $ 5.4                
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.17% [2]   7.17% [2]   4.50% [1] 7.17% [2] 7.17% [2] 7.17% [2] 4.50% [1] 4.50% [1] 4.50% [1]
Total first lien senior secured loans $ 12.1 [3],[4]   $ 12.1 [3],[4]   $ 11.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 11.1 [3],[4]   $ 11.1 [3],[4]   $ 10.9 [6],[7]            
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 12.67% [2]   12.67% [2]   10.00% [1] 12.67% [2] 12.67% [2] 12.67% [2] 10.00% [1] 10.00% [1] 10.00% [1]
Total first lien senior secured loans $ 68.4 [3],[4]   $ 68.4 [3],[4]   $ 68.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 65.7 [3],[4]   $ 65.7 [3],[4]   $ 61.6 [6],[7]            
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., Second lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 12.67% [2]   12.67% [2]   10.00% [1] 12.67% [2] 12.67% [2] 12.67% [2] 10.00% [1] 10.00% [1] 10.00% [1]
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]                      
Total investments at fair value 22.7 [3],[4]   22.7 [3],[4]   21.3 [6],[7]            
Investment, Identifier [Axis]: MCH Holdings, Inc., MC Acquisition Holdings I, LLC and Privia Health Group, Inc., Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 0.6            
Investment, Identifier [Axis]: MCH Holdings, Inc., MC Acquisition Holdings I, LLC and Privia Health Group, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6]         $ 110.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         110.2            
Investment, Identifier [Axis]: ME Equity LLC, Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 4.3 [4]   4.3 [4]   3.1 [7]            
Investment, Identifier [Axis]: MMIT Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.6   4.6   4.6            
Less: funded commitments (0.8)   (0.8)   (0.6)            
Total unfunded commitments 3.8   3.8   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 commitments $ 3.8   $ 3.8   $ 4.0            
Investment, Identifier [Axis]: MMIT Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.25%       7.25% 7.25% 7.25%
Total first lien senior secured loans [6],[7]         $ 18.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 18.0            
Investment, Identifier [Axis]: MMIT Holdings, LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.92%   9.92%     9.92% 9.92% 9.92%      
Total first lien senior secured loans [3],[4] $ 13.6   $ 13.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 13.7   $ 13.7                
Investment, Identifier [Axis]: MMIT Holdings, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.92% [2]   9.92% [2]   7.25% [1] 9.92% [2] 9.92% [2] 9.92% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 2.8 [3],[4]   $ 2.8 [3],[4]   $ 13.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.8 [3],[4]   $ 2.8 [3],[4]   $ 13.6 [6],[7]            
Investment, Identifier [Axis]: MMIT Holdings, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.50% [2]   9.50% [2]   7.25% [1] 9.50% [2] 9.50% [2] 9.50% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 0.8 [3]   $ 0.8 [3]   $ 0.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.8 [3]   0.8 [3]   0.6 [6],[7]            
Investment, Identifier [Axis]: MMax Investment Partners, Inc. (d/b/a Professional Fighters League) and PFL MMA, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [7]         15.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         13.9            
Investment, Identifier [Axis]: MMax Investment Partners, Inc. (d/b/a Professional Fighters League) and PFL MMA, Inc., Warrant to purchase shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         1.9            
Investment, Identifier [Axis]: MRI Software LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 12.7   12.7   10.2            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 12.7   12.7   10.2            
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 commitments $ 12.7   $ 12.7   $ 10.2            
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6]         $ 51.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 51.5            
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.17%   9.17%     9.17% 9.17% 9.17%      
Total first lien senior secured loans [3] $ 47.2   $ 47.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] $ 45.8   $ 45.8                
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.17% [2]   9.17% [2]   6.50% [1] 9.17% [2] 9.17% [2] 9.17% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 15.4 [3],[4]   $ 15.4 [3],[4]   $ 4.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 14.9 [3],[4]   $ 14.9 [3],[4]   $ 4.5 [6],[7]            
Investment, Identifier [Axis]: Mac Lean-Fogg Company and MacLean-Fogg Holdings, L.L.C., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.87% [2]   7.87% [2]   5.88% [1] 7.87% [2] 7.87% [2] 7.87% [2] 5.88% [1] 5.88% [1] 5.88% [1]
Total first lien senior secured loans $ 84.9 [3],[4]   $ 84.9 [3],[4]   $ 123.8 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 84.9 [3],[4]   $ 84.9 [3],[4]   $ 123.8 [6]            
Investment, Identifier [Axis]: Mac Lean-Fogg Company and MacLean-Fogg Holdings, L.L.C., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         5.88%       5.88% 5.88% 5.88%
Total first lien senior secured loans [6],[7]         $ 19.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 19.1            
Investment, Identifier [Axis]: Mac Lean-Fogg Company and MacLean-Fogg Holdings, L.L.C., Preferred units                      
Schedule of Investments [Line Items]                      
Coupon | Rate 13.75% [2]   13.75% [2]   13.75% [1] 13.75% [2] 13.75% [2] 13.75% [2] 13.75% [1] 13.75% [1] 13.75% [1]
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 77.1 [4]   $ 77.1 [4]   $ 75.0            
Investment, Identifier [Axis]: Magnesium BorrowerCo, Inc. and Magnesium Co-Invest SCSp | Revolving and delayed draw loan commitments                      
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 commitments $ 15.1   $ 15.1                
Investment, Identifier [Axis]: Magnesium BorrowerCo, Inc. and Magnesium Co-Invest SCSp, 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 [3],[4],[5] $ 169.7   $ 169.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] 166.3   166.3                
Investment, Identifier [Axis]: Magnesium BorrowerCo, Inc. and Magnesium Co-Invest SCSp, Limited partnership interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] 40.4   40.4                
Investment, Identifier [Axis]: MailSouth, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [4],[9] 8.8   8.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[9] 4.5   4.5                
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P. | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value 3.5 [4]   3.5 [4]   4.0 [7]            
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P., Class B units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0   $ 0.0   $ 0.0 [7]            
Investment, Identifier [Axis]: Majesco and Magic Topco, L.P., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.93% [2]   10.93% [2]   8.25% [1] 10.93% [2] 10.93% [2] 10.93% [2] 8.25% [1] 8.25% [1] 8.25% [1]
Total first lien senior secured loans $ 30.4 [3],[4]   $ 30.4 [3],[4]   $ 42.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 30.4 [3],[4]   30.4 [3],[4]   42.2 [6],[7]            
Investment, Identifier [Axis]: Management Consulting & Research LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.0   4.0                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 4.0   4.0                
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 commitments $ 4.0   $ 4.0                
Investment, Identifier [Axis]: Management Consulting & Research LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.73%   8.73%     8.73% 8.73% 8.73%      
Total first lien senior secured loans [3],[4] $ 1.0   $ 1.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 1.0   1.0                
Investment, Identifier [Axis]: Manna Pro Products, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.0   7.0   7.0            
Less: funded commitments (5.1)   (5.1)   (1.9)            
Total unfunded commitments 1.9   1.9   5.1            
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 commitments $ 1.9   $ 1.9   $ 5.1            
Investment, Identifier [Axis]: Manna Pro Products, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.02% [2]   9.02% [2]   7.00% [1] 9.02% [2] 9.02% [2] 9.02% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 5.1 [3],[4]   $ 5.1 [3],[4]   $ 1.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 4.9 [3],[4]   4.9 [3],[4]   1.9 [6],[7]            
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC | Revolving and delayed draw loan commitments                      
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                
Less: unavailable commitments due to borrowing base or other covenant restrictions 0.0   0.0                
Total net adjusted unfunded revolving and delayed draw commitments 1.2   1.2                
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, Class A common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 11.8 [4]   $ 11.8 [4]   $ 9.3 [7]            
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.08% [2]   9.08% [2]   6.25% [1] 9.08% [2] 9.08% [2] 9.08% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 30.9 [3],[4]   $ 30.9 [3],[4]   $ 18.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 30.5 [3],[4]   $ 30.5 [3],[4]   $ 18.5 [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 9.14% [2]   9.14% [2]   6.25% [1] 9.14% [2] 9.14% [2] 9.14% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 7.4 [3],[4]   $ 7.4 [3],[4]   $ 2.1 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 7.3 [3],[4]   7.3 [3],[4]   $ 2.1 [6]            
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 [1]         6.00%       6.00% 6.00% 6.00%
Total first lien senior secured loans [6]         $ 6.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 6.5            
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 [1]         6.25%       6.25% 6.25% 6.25%
Total first lien senior secured loans [6],[7]         $ 35.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 34.6            
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.0   7.0                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 7.0   7.0                
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 commitments $ 7.0   $ 7.0                
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 34.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         34.4            
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.55%   9.55%     9.55% 9.55% 9.55%      
Total first lien senior secured loans [3],[4] $ 28.2   $ 28.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 27.9   $ 27.9                
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.70%   9.70%     9.70% 9.70% 9.70%      
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.4   $ 0.4                
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.33%   8.33%     8.33% 8.33% 8.33%      
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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]                      
Total investments at fair value 2.5 [4]   2.5 [4]   2.4 [7]            
Investment, Identifier [Axis]: Maverick Acquisition, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 17.2   17.2   17.2            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 17.2   17.2   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 commitments $ 17.2   $ 17.2   $ 17.2            
Investment, Identifier [Axis]: Maverick Acquisition, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.92% [2]   9.92% [2]   7.00% [1] 9.92% [2] 9.92% [2] 9.92% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 27.7 [3],[4]   $ 27.7 [3],[4]   $ 57.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 25.7 [3],[4]   25.7 [3],[4]   57.3 [6],[7]            
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]                      
Total investments at fair value [7]         $ 26.8            
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]                      
Coupon | Rate [1]         3.85%       3.85% 3.85% 3.85%
Total first lien senior secured loans [7],[14]         $ 15.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[14]         15.3            
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis HoldCo, Inc., and Metis TopCo, LP, Series A preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         71.8            
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 32.9   32.9   32.9            
Less: funded commitments (7.3)   (7.3)   (23.4)            
Total unfunded commitments 25.6   25.6   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 commitments 25.6   25.6   9.5            
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]                      
Total investments at fair value [4] 37.1   37.1                
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP, First lien senior secured revolving loan                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [15] 0.0   0.0                
Investment, Identifier [Axis]: Mavis Tire Express Services Topco Corp., Metis Holdco, Inc. and Metis Topco, LP, Series A preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 75.6   75.6                
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.5   4.5   4.5            
Less: funded commitments (1.9)   (1.9)   0.0            
Total unfunded commitments 2.6   2.6   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 commitments $ 2.6   $ 2.6   $ 4.5            
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.43% [2]   9.43% [2]   6.75% [1] 9.43% [2] 9.43% [2] 9.43% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 84.5 [3],[4],[20]   $ 84.5 [3],[4],[20]   $ 84.5 [6],[21]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 83.7 [3],[4],[20]   $ 83.7 [3],[4],[20]   $ 84.5 [6],[21]            
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.43% [2]   9.43% [2]   6.75% [1] 9.43% [2] 9.43% [2] 9.43% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 5.5 [3],[4]   $ 5.5 [3],[4]   $ 5.5 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 5.4 [3],[4]   $ 5.4 [3],[4]   $ 5.5 [6]            
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%
Total first lien senior secured loans $ 40.9   $ 40.9   $ 46.9            
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.79%   8.79%     8.79% 8.79% 8.79%      
Total first lien senior secured loans [3],[4] $ 1.9   $ 1.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 1.9   1.9                
Investment, Identifier [Axis]: McLaren Group Limited, Senior preference shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 25.0 [4],[5]   25.0 [4],[5]   27.1 [7],[8]            
Investment, Identifier [Axis]: McLaren Group Limited, Warrant to purchase ordinary shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[8]         5.1            
Investment, Identifier [Axis]: McLaren Group Limited, Warrant to purchase ordinary shares 2                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[8]         1.4            
Investment, Identifier [Axis]: McLaren Group Limited, Warrant to purchase up to 13,776 ordinary shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] 0.9   0.9                
Investment, Identifier [Axis]: McLaren Group Limited, Warrant to purchase up to 49,181 ordinary shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] 3.4   3.4                
Investment, Identifier [Axis]: Medline Borrower, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 6.9   6.9   6.9            
Less: funded commitments (0.2)   (0.2)   0.0            
Total unfunded commitments 6.7   6.7   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 commitments 6.7   6.7   6.9            
Investment, Identifier [Axis]: Medline Borrower, LP, First lien senior secured revolving loan                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: Miami Beckham United LLC, Class A preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 92.7   92.7   87.1            
Investment, Identifier [Axis]: Micromeritics Instrument Corp. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.1   4.1   4.1            
Less: funded commitments 0.0   0.0   (0.1)            
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 commitments $ 4.1   $ 4.1   $ 4.0            
Investment, Identifier [Axis]: Micromeritics Instrument Corp., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.38% [2]   7.38% [2]   6.00% [1] 7.38% [2] 7.38% [2] 7.38% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 24.0 [3],[4]   $ 24.0 [3],[4]   $ 32.0 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 24.0 [3],[4]   24.0 [3],[4]   $ 32.0 [6]            
Investment, Identifier [Axis]: Micromeritics Instrument Corp., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
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]                      
Total investments at fair value 6.1 [4]   6.1 [4]   4.5 [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]                      
Total first lien senior secured loans 153.5 [3]   153.5 [3]   153.5 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 153.5 [3]   153.5 [3]   150.4 [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]                      
Total investments at fair value 2.6 [4]   2.6 [4]   2.0 [7]            
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 31.3   31.3   31.3            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 31.3   31.3   31.3            
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 commitments $ 31.3   $ 31.3   $ 31.3            
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 9.17% [2]   9.17% [2]   6.25% [1] 9.17% [2] 9.17% [2] 9.17% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 32.6 [3],[4]   $ 32.6 [3],[4]   $ 72.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 31.6 [3],[4]   31.6 [3],[4]   72.0 [6],[7]            
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., First lien senior secured revolving loan                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [15] 0.0   0.0                
Investment, Identifier [Axis]: Ministry Brands Holdings, LLC and RCP MB Investments B, L.P., Limited partner interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 9.1 [4]   $ 9.1 [4]   9.6 [7]            
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands) | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         10.9            
Less: funded commitments         (5.0)            
Total unfunded commitments         5.9            
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 commitments         5.9            
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 7.2            
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         5.00%       5.00% 5.00% 5.00%
Total first lien senior secured loans [6]         $ 9.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 9.2            
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         5.00%       5.00% 5.00% 5.00%
Total first lien senior secured loans [6]         $ 4.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 4.7            
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.25%       7.25% 7.25% 7.25%
Total first lien senior secured loans [6]         $ 5.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 5.0            
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         10.25%       10.25% 10.25% 10.25%
Total first lien senior secured loans [6]         $ 106.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 106.6            
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Second lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         10.25%       10.25% 10.25% 10.25%
Total first lien senior secured loans [6],[7]         $ 13.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 13.9            
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Second lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         10.25%       10.25% 10.25% 10.25%
Total first lien senior secured loans [6],[7]         $ 17.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 17.9            
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Second lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         9.00%       9.00% 9.00% 9.00%
Total first lien senior secured loans [6],[7]         $ 48.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 48.9            
Investment, Identifier [Axis]: Mitchell International, Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.57% [2]   9.57% [2]   7.00% [1] 9.57% [2] 9.57% [2] 9.57% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 91.2 [3],[4],[11]   $ 91.2 [3],[4],[11]   $ 91.2 [6],[7],[12]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 85.2 [3],[4],[11]   85.2 [3],[4],[11]   91.6 [6],[7],[12]            
Investment, Identifier [Axis]: Monica Holdco (US) Inc. | Revolving and delayed draw loan commitments                      
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 commitments $ 3.6   $ 3.6   $ 3.6            
Investment, Identifier [Axis]: Monica Holdco (US) Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.92% [2]   9.92% [2]   7.25% [1] 9.92% [2] 9.92% [2] 9.92% [2] 7.25% [1] 7.25% [1] 7.25% [1]
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]                      
Total investments at fair value 2.6 [3],[4]   2.6 [3],[4]   $ 2.6 [6],[7]            
Investment, Identifier [Axis]: Monica Holdco (US) Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: Monolith Brands Group, Inc., Series A-1 preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 15.5   15.5                
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 | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 15.2   15.2   15.2            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 15.2   15.2   15.2            
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 commitments $ 15.2   $ 15.2   $ 15.2            
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, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.87% [2]   8.87% [2]   6.75% [1] 8.87% [2] 8.87% [2] 8.87% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 77.4 [3],[4]   $ 77.4 [3],[4]   $ 79.0 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 77.4 [3],[4]   77.4 [3],[4]   78.2 [6]            
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]                      
Total investments at fair value 24.0   24.0   $ 96.9            
Investment, Identifier [Axis]: Moonraker AcquisitionCo LLC and Moonraker HoldCo LLC | Revolving and delayed draw loan commitments                      
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 commitments 19.0   19.0                
Investment, Identifier [Axis]: Moonraker AcquisitionCo LLC and Moonraker HoldCo LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 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 [2] 9.03%   9.03%     9.03% 9.03% 9.03%      
Total first lien senior secured loans [3],[4] $ 26.7   $ 26.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 26.2   $ 26.2                
Investment, Identifier [Axis]: Movati Athletic (Group) Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.76% [2]   8.76% [2]   7.45% [1] 8.76% [2] 8.76% [2] 8.76% [2] 7.45% [1] 7.45% [1] 7.45% [1]
Total first lien senior secured loans $ 4.6 [3],[4],[5]   $ 4.6 [3],[4],[5]   $ 0.2 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 4.5 [3],[4],[5]   4.5 [3],[4],[5]   $ 0.2 [6],[7],[8]            
Investment, Identifier [Axis]: Movati Athletic (Group) Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.50%       7.50% 7.50% 7.50%
Total first lien senior secured loans [6],[7],[8]         $ 2.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[8]         $ 2.7            
Investment, Identifier [Axis]: Movati Athletic (Group) Inc., First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.50%       7.50% 7.50% 7.50%
Total first lien senior secured loans [6],[8]         $ 2.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[8]         $ 2.1            
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 27.5   27.5                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 27.5   27.5                
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 commitments $ 27.5   $ 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 12.20% [2]   12.20% [2]   11.00% [1] 12.20% [2] 12.20% [2] 12.20% [2] 11.00% [1] 11.00% [1] 11.00% [1]
Total first lien senior secured loans $ 75.5 [3],[4]   $ 75.5 [3],[4]   $ 2.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 75.5 [3],[4]   75.5 [3],[4]   $ 2.7 [6],[7]            
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         10.00%       10.00% 10.00% 10.00%
Total first lien senior secured loans [6],[7]         $ 38.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 38.3            
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%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 45.1   45.1   $ 27.4            
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC | Revolving and delayed draw loan commitments                      
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 commitments $ 2.4   $ 2.4   $ 2.4            
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.50%       7.50% 7.50% 7.50%
Total first lien senior secured loans [6],[7]         $ 2.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 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 [2] 10.20%   10.20%     10.20% 10.20% 10.20%      
Total first lien senior secured loans [3],[4] $ 6.3   $ 6.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 6.3   $ 6.3                
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.20% [2]   10.20% [2]   7.00% [1] 10.20% [2] 10.20% [2] 10.20% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 2.3 [3],[4]   $ 2.3 [3],[4]   $ 6.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.3 [3],[4]   $ 2.3 [3],[4]   $ 6.4 [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 [2] 10.20%   10.20%     10.20% 10.20% 10.20%      
Total first lien senior secured loans [3],[4] $ 1.3   $ 1.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 1.3   $ 1.3                
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.53% [2]   9.53% [2]   8.75% [1] 9.53% [2] 9.53% [2] 9.53% [2] 8.75% [1] 8.75% [1] 8.75% [1]
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]                      
Total investments at fair value 0.6 [3],[4]   0.6 [3],[4]   0.6 [6],[7]            
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 28.3   28.3   28.3            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 28.3   28.3   28.3            
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 commitments 28.3   28.3   28.3            
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, Class A-2 common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 17.5 [4]   $ 17.5 [4]   $ 18.5 [7]            
Investment, Identifier [Axis]: NCWS Intermediate, Inc. and NCWS Holdings LP, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.12% [2]   9.12% [2]   6.75% [1] 9.12% [2] 9.12% [2] 9.12% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 147.2 [3],[4]   $ 147.2 [3],[4]   $ 12.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 145.8 [3],[4]   $ 145.8 [3],[4]   $ 12.0 [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 9.12% [2]   9.12% [2]   6.75% [1] 9.12% [2] 9.12% [2] 9.12% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 176.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.2 [3],[4]   0.2 [3],[4]   174.7 [6],[7]            
Investment, Identifier [Axis]: NECCO Holdings, Inc. and New England Confectionery Company, Inc.                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)         1.9            
Redemptions (cost)         14.5            
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):         (12.4)            
Net unrealized gains (losses):         8.0            
Total investments at fair value         0.0            
Investment, Identifier [Axis]: NECCO Realty Investments LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)         0.0            
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            
Total investments at fair value         $ 0.0            
Investment, Identifier [Axis]: NM GRC Holdco, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6]         $ 45.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         45.4            
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 12.7   12.7   9.1            
Less: funded commitments 0.0   0.0   (6.2)            
Total unfunded commitments 12.7   12.7   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 commitments $ 12.7   $ 12.7   $ 2.9            
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.81% [2]   7.81% [2]   6.00% [1] 7.81% [2] 7.81% [2] 7.81% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 32.0 [3],[4]   $ 32.0 [3],[4]   $ 24.2 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 31.1 [3],[4]   $ 31.1 [3],[4]   $ 23.9 [6]            
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.07% [2]   7.07% [2]   6.00% [1] 7.07% [2] 7.07% [2] 7.07% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 4.7 [3],[4]   $ 4.7 [3],[4]   $ 8.1 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 4.6 [3],[4]   4.6 [3],[4]   $ 8.1 [6]            
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.00%       6.00% 6.00% 6.00%
Total first lien senior secured loans [6],[7]         $ 6.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         6.1            
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 12.5   12.5   12.5            
Less: funded commitments (2.8)   (2.8)   (1.1)            
Total unfunded commitments 9.7   9.7   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 commitments $ 9.7   $ 9.7   $ 11.4            
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.00% [2]   9.00% [2]   0.00% [1] 9.00% [2] 9.00% [2] 9.00% [2] 0.00% [1] 0.00% [1] 0.00% [1]
Total first lien senior secured loans [4],[13] $ 2.0   $ 2.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.9 [4],[13]   1.9 [4],[13]   $ 0.0 [16]            
Investment, Identifier [Axis]: NMN Holdings III Corp. and NMN Holdings LP, Partnership units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 2.5 [4]   2.5 [4]   2.8 [7]            
Investment, Identifier [Axis]: NSM Insurance Group, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         6.0            
Less: funded commitments         (0.7)            
Total unfunded commitments         5.3            
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 commitments         $ 5.3            
Investment, Identifier [Axis]: NSM Insurance Group, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.00%       6.00% 6.00% 6.00%
Total first lien senior secured loans [6]         $ 12.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 12.8            
Investment, Identifier [Axis]: NSM Insurance Group, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7],[14]         $ 0.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[14]         0.5            
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 4.4 [4]   4.4 [4]   4.1 [7]            
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.2 [4]   0.2 [4]   $ 0.1 [7]            
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         11.00%       11.00% 11.00% 11.00%
Total first lien senior secured loans [6],[7]         $ 72.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         72.8            
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Senior preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   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]                      
Total investments at fair value [4] 40.9   40.9                
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Series B preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   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]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: National College of Business and Technology Inc. & Leeds IV Advisors, Inc., Series C preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   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]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: National Intergovernmental Purchasing Alliance Company | Revolving and delayed draw loan commitments                      
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 commitments $ 9.0   $ 9.0   9.0            
Investment, Identifier [Axis]: National Spine and Pain Centers, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.31%   7.31%     7.31% 7.31% 7.31%      
Total first lien senior secured loans [3],[4] $ 0.0   $ 0.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.0   0.0                
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     0.0   6.6            
Redemptions (cost)     131.0   0.0            
Sales (cost)     0.0   0.0            
Interest income     0.4   8.9            
Capital structuring service fees     0.0   0.1            
Dividend income     0.1   0.4            
Other income     0.0   0.1            
Net realized gains (losses):     19.0   0.0            
Net unrealized gains (losses):     (10.8)   12.6            
Total investments at fair value 0.0   0.0   143.7            
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         11.8            
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [7]         54.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         54.4            
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [7]         15.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 15.2            
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.00%       8.00% 8.00% 8.00%
Total first lien senior secured loans [7]         $ 46.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         46.5            
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, Series A preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         15.8            
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.6   0.6   0.6            
Less: funded commitments (0.1)   (0.1)   (0.2)            
Total unfunded commitments 0.5   0.5   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 commitments 0.5   0.5   0.4            
Investment, Identifier [Axis]: Nelipak Holding Company, Nelipak European Holdings Cooperatief U.A., KNPAK Holdings, LP and PAKNK Netherlands Treasury B.V., Class A preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] $ 7.6   $ 7.6                
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]                      
Total investments at fair value [7],[8]         $ 7.1            
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                      
Schedule of Investments [Line Items]                      
Coupon | Rate 4.50% [2]   4.50% [2]   5.25% [1] 4.50% [2] 4.50% [2] 4.50% [2] 5.25% [1] 5.25% [1] 5.25% [1]
Total first lien senior secured loans $ 4.4 [4],[5]   $ 4.4 [4],[5]   $ 15.0 [6],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.3 [4],[5]   $ 4.3 [4],[5]   $ 15.0 [6],[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 7.37% [2]   7.37% [2]   4.50% [1] 7.37% [2] 7.37% [2] 7.37% [2] 4.50% [1] 4.50% [1] 4.50% [1]
Total first lien senior secured loans $ 14.9 [3],[4],[5]   $ 14.9 [3],[4],[5]   $ 5.2 [7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 14.6 [3],[4],[5]   $ 14.6 [3],[4],[5]   $ 5.2 [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 4.50% [2]   4.50% [2]   4.50% [1] 4.50% [2] 4.50% [2] 4.50% [2] 4.50% [1] 4.50% [1] 4.50% [1]
Total first lien senior secured loans $ 1.4 [4],[5]   $ 1.4 [4],[5]   $ 24.4 [7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.4 [4],[5]   $ 1.4 [4],[5]   $ 24.4 [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 7.33% [2]   7.33% [2]   5.25% [1] 7.33% [2] 7.33% [2] 7.33% [2] 5.25% [1] 5.25% [1] 5.25% [1]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.2 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [3],[4],[5]   0.1 [3],[4],[5]   0.2 [6],[7],[8]            
Investment, Identifier [Axis]: Nest Topco Borrower Inc., KKR Nest Co-Invest L.P., and NBLY 2021-1 | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 119.1   119.1   119.1            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 119.1   119.1   119.1            
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 commitments 119.1   119.1   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]                      
Total investments at fair value $ 9.5 [4]   $ 9.5 [4]   $ 9.7 [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 11.58% [2]   11.58% [2]   9.00% [1] 11.58% [2] 11.58% [2] 11.58% [2] 9.00% [1] 9.00% [1] 9.00% [1]
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]                      
Total investments at fair value $ 117.9 [3],[4]   $ 117.9 [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 [2] 8.46%   8.46%     8.46% 8.46% 8.46%      
Total first lien senior secured loans [3],[4] $ 28.1   $ 28.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 28.1   28.1                
Investment, Identifier [Axis]: Noble Aerospace, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 5.6   5.6                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 5.6   5.6                
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 commitments 5.6   5.6                
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 8.1   8.1   23.9            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 8.1   8.1   23.9            
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 commitments 8.1   8.1   23.9            
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.7 [4]   $ 2.7 [4]   $ 1.2 [7]            
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6]         $ 20.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         20.1            
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]                      
Coupon | Rate [2] 9.45%   9.45%     9.45% 9.45% 9.45%      
Total first lien senior secured loans [3],[4] $ 20.0   $ 20.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 20.0   $ 20.0                
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 [2] 8.91%   8.91%     8.91% 8.91% 8.91%      
Total first lien senior secured loans [3],[4] $ 2.9   $ 2.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 2.9   2.9                
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         6.0            
Less: funded commitments         0.0            
Total unfunded commitments         6.0            
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 commitments         6.0            
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]                      
Total investments at fair value $ 35.9 [4]   $ 35.9 [4]   $ 32.8 [7]            
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.11% [2]   9.11% [2]   6.50% [1] 9.11% [2] 9.11% [2] 9.11% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 47.7 [3],[4]   $ 47.7 [3],[4]   $ 48.0 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 47.7 [3],[4]   $ 47.7 [3],[4]   $ 48.0 [6]            
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 9.11% [2]   9.11% [2]   6.50% [1] 9.11% [2] 9.11% [2] 9.11% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 2.5 [3],[4]   $ 2.5 [3],[4]   $ 2.6 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.5 [3],[4]   $ 2.5 [3],[4]   $ 2.6 [6]            
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 9.11% [2]   9.11% [2]   6.50% [1] 9.11% [2] 9.11% [2] 9.11% [2] 6.50% [1] 6.50% [1] 6.50% [1]
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]                      
Total investments at 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., First lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.11%   9.11%     9.11% 9.11% 9.11%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.1   0.1                
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC and North Haven Falcon Holding Company, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.5   3.5   6.7            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 3.5   3.5   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 commitments 3.5   3.5   6.7            
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]                      
Total investments at fair value $ 3.0   $ 3.0   $ 4.1            
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 8.01% [2]   8.01% [2]   7.00% [1] 8.01% [2] 8.01% [2] 8.01% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 21.7 [3],[4]   $ 21.7 [3],[4]   $ 22.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 20.9 [3],[4]   $ 20.9 [3],[4]   22.1 [6],[7]            
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 | Rate [2] 8.67%   8.67%     8.67% 8.67% 8.67%      
Total first lien senior secured loans [3],[4] $ 3.6   $ 3.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 3.5   3.5                
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 5.5   5.5   10.0            
Less: funded commitments (0.6)   (0.6)   0.0            
Total unfunded commitments 4.9   4.9   10.0            
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 commitments $ 4.9   $ 4.9   $ 10.0            
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.63% [2]   8.63% [2]   6.50% [1] 8.63% [2] 8.63% [2] 8.63% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 4.8 [3],[4]   $ 4.8 [3],[4]   $ 11.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.6 [3],[4]   $ 4.6 [3],[4]   11.0 [6],[7]            
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.63%   8.63%     8.63% 8.63% 8.63%      
Total first lien senior secured loans [3],[4] $ 1.7   $ 1.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 1.7   $ 1.7                
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.96%   7.96%     7.96% 7.96% 7.96%      
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.4   $ 0.4                
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.75%   10.75%     10.75% 10.75% 10.75%      
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.2   0.2                
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]                      
Total investments at fair value 9.9 [4]   9.9 [4]   6.3 [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]                      
Total investments at fair value $ 0.0   $ 0.0   $ 0.0 [7]            
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.37% [2]   8.37% [2]   6.75% [1] 8.37% [2] 8.37% [2] 8.37% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 23.5 [3],[4]   $ 23.5 [3],[4]   $ 23.9 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 23.5 [3],[4]   $ 23.5 [3],[4]   23.9 [6]            
Investment, Identifier [Axis]: NueHealth Performance, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         6.2            
Less: funded commitments         (3.3)            
Total unfunded commitments         2.9            
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 commitments         $ 2.9            
Investment, Identifier [Axis]: NueHealth Performance, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.25%       8.25% 8.25% 8.25%
Total first lien senior secured loans [6]         $ 12.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 12.4            
Investment, Identifier [Axis]: NueHealth Performance, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.25%       8.25% 8.25% 8.25%
Total first lien senior secured loans [6],[7]         $ 3.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 3.0            
Investment, Identifier [Axis]: NueHealth Performance, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.25%       8.25% 8.25% 8.25%
Total first lien senior secured loans [6],[7]         $ 3.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 3.3            
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.02% [2]   10.02% [2]   6.50% [1] 10.02% [2] 10.02% [2] 10.02% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 25.9 [3],[4]   $ 25.9 [3],[4]   $ 26.1 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 25.9 [3],[4]   $ 25.9 [3],[4]   $ 26.1 [6]            
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.02% [2]   10.02% [2]   6.50% [1] 10.02% [2] 10.02% [2] 10.02% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 15.3 [3],[4]   $ 15.3 [3],[4]   $ 15.4 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 15.3 [3],[4]   $ 15.3 [3],[4]   15.4 [6]            
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.42%   9.42%     9.42% 9.42% 9.42%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.1   0.1                
Investment, Identifier [Axis]: OTG Management, LLC, Class A preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 13.1 [4]   13.1 [4]   15.8            
Investment, Identifier [Axis]: OTG Management, LLC, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.0            
Investment, Identifier [Axis]: OTG Management, LLC, Warrant to purchase common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         $ 0.0            
Investment, Identifier [Axis]: OTG Management, LLC, Warrant to purchase up to 7.73% of common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0   $ 0.0                
Investment, Identifier [Axis]: OUTFRONT Media Inc., Series A convertible perpetual preferred stock                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.00% [2]   7.00% [2]   7.00% [1] 7.00% [2] 7.00% [2] 7.00% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 32.6 [4],[5]   $ 32.6 [4],[5]   $ 44.4 [7],[8]            
Investment, Identifier [Axis]: Offen, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 5.6   5.6                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 5.6   5.6                
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 commitments $ 5.6   $ 5.6                
Investment, Identifier [Axis]: Offen, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.50%   8.50%     8.50% 8.50% 8.50%      
Total first lien senior secured loans [4] $ 1.4   $ 1.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 1.4   1.4                
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         11.0            
Less: funded commitments         (10.3)            
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 commitments         0.7            
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., Class A common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 0.0            
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6]         $ 42.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 34.5            
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6]         $ 0.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 0.8            
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6],[7]         $ 10.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 8.3            
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., First lien senior secured revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6],[7]         $ 0.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         0.2            
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., Preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.3            
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P. and Asclepius Hodlings LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     3.3                
Redemptions (cost)     0.0                
Sales (cost)     0.0                
Interest income     3.2                
Capital structuring service fees     0.1                
Dividend income     0.0                
Other income     0.1                
Net realized gains (losses):     0.0                
Net unrealized gains (losses):     (3.4)                
Total investments at fair value 48.6   48.6                
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 6.6   6.6                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 6.6   6.6                
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 commitments 6.6   6.6                
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]                      
Total investments at fair value 0.0   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]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [3] 49.3   49.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] 45.3   45.3                
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 [3],[4] 3.5   3.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 3.3   3.3                
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, Preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   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]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: OneDigital Borrower LLC | Revolving and delayed draw loan commitments                      
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 commitments 7.1   7.1   $ 7.5            
Investment, Identifier [Axis]: OneDigital Borrower LLC, First lien senior secured revolving loan                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [15] 0.0   0.0                
Investment, Identifier [Axis]: OneDigital Holdings, Achilles Holdco, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [16]         $ 0.0            
Investment, Identifier [Axis]: Opal Fuels LLC and Opal Fuels Inc., Class A common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [5],[11] 25.3   25.3                
Investment, Identifier [Axis]: Opal Fuels LLC and Opal Fuels Inc., Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [5] 28.0   28.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [5] $ 28.0   $ 28.0                
Investment, Identifier [Axis]: Opal Fuels LLC, Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans         52.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         $ 47.8            
Investment, Identifier [Axis]: OpenMarket Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.92% [2]   9.92% [2]   7.00% [1] 9.92% [2] 9.92% [2] 9.92% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 51.7 [3],[4],[5]   $ 51.7 [3],[4],[5]   $ 50.7 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 51.2 [3],[4],[5]   $ 51.2 [3],[4],[5]   $ 50.1 [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 9.87% [2]   9.87% [2]   7.25% [1] 9.87% [2] 9.87% [2] 9.87% [2] 7.25% [1] 7.25% [1] 7.25% [1]
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]                      
Total investments at fair value 51.9 [3],[4]   51.9 [3],[4]   54.7 [6],[7]            
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment II, L.P.                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     0.0   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):     4.2   0.8            
Total investments at fair value 15.3   15.3   11.1            
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment II, L.P., Limited partnership interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 15.3 [4],[5]   15.3 [4],[5]   11.1 [7],[8],[19]            
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   0.6            
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):     (0.6)   1.5            
Total investments at fair value 0.7   0.7   1.3            
Investment, Identifier [Axis]: PCG-Ares Sidecar Investment, L.P. and PCG-Ares Sidecar Investment II, L.P. | Private equity commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 50.0   50.0   50.0            
Less: funded commitments (12.5)   (12.5)   (12.5)            
Total unfunded commitments 37.5   37.5   37.5            
Less: commitments substantially at discretion of the Company (37.5)   (37.5)   (37.5)            
Total net adjusted unfunded revolving and delayed draw 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]                      
Total investments at fair value 0.7 [5]   0.7 [5]   1.3 [8],[19]            
Investment, Identifier [Axis]: PDDS HoldCo, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.6   2.6                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 2.6   2.6                
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 commitments $ 2.6   $ 2.6                
Investment, Identifier [Axis]: PDDS Holdco, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.89%   9.89%     9.89% 9.89% 9.89%      
Total first lien senior secured loans [3],[4] $ 9.0   $ 9.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 8.8   8.8                
Investment, Identifier [Axis]: PDI TA Hholdings, 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 [6],[7]         70.1            
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.6   7.6   7.6            
Less: funded commitments (4.7)   (4.7)   0.0            
Total unfunded commitments 2.9   2.9   7.6            
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 commitments 2.9   2.9   7.6            
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]                      
Total investments at fair value $ 2.8 [4]   $ 2.8 [4]   $ 2.9 [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 7.16% [2]   7.16% [2]   5.50% [1] 7.16% [2] 7.16% [2] 7.16% [2] 5.50% [1] 5.50% [1] 5.50% [1]
Total first lien senior secured loans $ 53.1 [3],[4]   $ 53.1 [3],[4]   $ 53.5 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 52.0 [3],[4]   $ 52.0 [3],[4]   $ 53.5 [6]            
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 [2] 7.21%   7.21%     7.21% 7.21% 7.21%      
Total first lien senior secured loans [3],[4] $ 4.7   $ 4.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 4.6   $ 4.6                
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         9.50%       9.50% 9.50% 9.50%
Total first lien senior secured loans [6],[7]         $ 7.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 7.2            
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 [2] 11.49%   11.49%     11.49% 11.49% 11.49%      
Total first lien senior secured loans [3],[4] $ 70.2   $ 70.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 69.5   $ 69.5                
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]                      
Coupon | Rate 11.49% [2]   11.49% [2]   9.50% [1] 11.49% [2] 11.49% [2] 11.49% [2] 9.50% [1] 9.50% [1] 9.50% [1]
Total first lien senior secured loans [3],[4] $ 8.7   $ 8.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 8.7 [3],[4]   $ 8.7 [3],[4]   $ 70.1 [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 11.49% [2]   11.49% [2]   9.50% [1] 11.49% [2] 11.49% [2] 11.49% [2] 9.50% [1] 9.50% [1] 9.50% [1]
Total first lien senior secured loans $ 8.3 [3],[4]   $ 8.3 [3],[4]   $ 8.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 8.2 [3],[4]   $ 8.2 [3],[4]   $ 8.3 [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 11.49% [2]   11.49% [2]   9.50% [1] 11.49% [2] 11.49% [2] 11.49% [2] 9.50% [1] 9.50% [1] 9.50% [1]
Total first lien senior secured loans $ 7.2 [3],[4]   $ 7.2 [3],[4]   $ 8.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 7.1 [3],[4]   7.1 [3],[4]   8.7 [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]                      
Total investments at fair value 21.1 [4]   21.1 [4]   19.7 [7]            
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC (fka QC Supply, LLC), Common unit                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 7.4            
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC (fka QC Supply, LLC), First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 14.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 14.9            
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC (fka QC Supply, LLC), First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 2.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         2.8            
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC, Common unit                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 6.2   $ 6.2                
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.67%   9.67%     9.67% 9.67% 9.67%      
Total first lien senior secured loans [3],[4] $ 14.9   $ 14.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 14.9   $ 14.9                
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 [2] 9.67%   9.67%     9.67% 9.67% 9.67%      
Total first lien senior secured loans [3],[4] $ 4.3   $ 4.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 4.3   4.3                
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     4.3   3.9            
Redemptions (cost)     2.7   1.2            
Sales (cost)     0.0   0.0            
Interest income     1.0   0.0            
Capital structuring service fees     0.0   0.0            
Dividend income     0.0   0.0            
Other income     0.1   0.0            
Net realized gains (losses):     0.0   0.0            
Net unrealized gains (losses):     (1.2)   0.0            
Total investments at fair value 25.4   25.4   25.1            
Investment, Identifier [Axis]: PS Operating Company LLC and PS Op Holdings LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 5.9   5.9   5.9            
Less: funded commitments (4.3)   (4.3)   (2.8)            
Total unfunded commitments 1.6   1.6   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 commitments 1.6   1.6   3.1            
Investment, Identifier [Axis]: Padres L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 64.2   64.2   64.2            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 64.2   64.2   64.2            
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 commitments $ 64.2   $ 64.2   $ 64.2            
Investment, Identifier [Axis]: Padres L.P., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.06% [2]   8.06% [2]   6.00% [1] 8.06% [2] 8.06% [2] 8.06% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 92.8 [3],[4]   $ 92.8 [3],[4]   $ 92.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 92.8 [3],[4]   92.8 [3],[4]   92.8 [6],[7]            
Investment, Identifier [Axis]: Panda Temple Power, LLC and T1 Power Holdings LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)         0.0            
Redemptions (cost)         19.6            
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):         9.8            
Net unrealized gains (losses):         0.9            
Total investments at fair value         0.0            
Investment, Identifier [Axis]: Partnership Capital Growth Investors III, L.P., Limited partnership interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 3.9 [4],[5],[11]   3.9 [4],[5],[11]   3.6 [8],[12]            
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value 6.5 [4]   6.5 [4]   $ 7.9 [7]            
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0 [15]   $ 0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: Pathway Vet Alliance LLC and Jedi Group Holdings LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.87% [2]   10.87% [2]   8.75% [1] 10.87% [2] 10.87% [2] 10.87% [2] 8.75% [1] 8.75% [1] 8.75% [1]
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]                      
Total investments at fair value 72.5 [3],[4]   72.5 [3],[4]   76.3 [6],[7]            
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.6   3.6   6.7            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 3.6   3.6   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 commitments $ 3.6   $ 3.6   $ 6.7            
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.65% [2]   8.65% [2]   6.25% [1] 8.65% [2] 8.65% [2] 8.65% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 13.7 [3],[4]   $ 13.7 [3],[4]   $ 11.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 13.3 [3],[4]   $ 13.3 [3],[4]   11.5 [6],[7]            
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.31%   9.31%     9.31% 9.31% 9.31%      
Total first lien senior secured loans [3] $ 0.9   $ 0.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] 0.9   0.9                
Investment, Identifier [Axis]: PayNearMe, Inc., Warrant to purchase shares of Series E preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: PayNearMe, Inc., Warrant to purchase up to 195,726 shares of Series E preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: Paya, Inc and GTCR-Ultra Holdings LLC | Revolving and delayed draw loan commitments                      
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 commitments 4.5   4.5   4.5            
Investment, Identifier [Axis]: Paya, Inc and GTCR-Ultra Holdings LLC, Class B units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 2.0 [4]   2.0 [4]   2.1 [7]            
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 34.0   34.0   45.9            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 34.0   34.0   45.9            
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 commitments 34.0   34.0   45.9            
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]                      
Total investments at fair value 15.1   15.1   $ 12.3            
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.25%       6.25% 6.25% 6.25%
Total first lien senior secured loans [6],[7]         $ 0.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 0.2            
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 [3],[4] 13.7   13.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 13.7   $ 13.7                
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 9.42% [2]   9.42% [2]   6.75% [1] 9.42% [2] 9.42% [2] 9.42% [2] 6.75% [1] 6.75% [1] 6.75% [1]
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]                      
Total investments at 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 8.92% [2]   8.92% [2]   6.75% [1] 8.92% [2] 8.92% [2] 8.92% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 29.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.2 [3],[4]   $ 0.2 [3],[4]   29.9 [6],[7]            
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC,h First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.42%   9.42%     9.42% 9.42% 9.42%      
Investment, Identifier [Axis]: Pelican Products, Inc. | Revolving and delayed draw loan commitments                      
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 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 11.92% [2]   11.92% [2]   8.25% [1] 11.92% [2] 11.92% [2] 11.92% [2] 8.25% [1] 8.25% [1] 8.25% [1]
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]                      
Total investments at fair value 56.4 [3],[4]   56.4 [3],[4]   59.4 [6],[7]            
Investment, Identifier [Axis]: People Corporation | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 21.9   21.9   29.4            
Less: funded commitments (5.1)   (5.1)   (2.9)            
Total unfunded commitments 16.8   16.8   26.5            
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 commitments $ 16.8   $ 16.8   $ 26.5            
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.87% [2]   9.87% [2]   6.25% [1] 9.87% [2] 9.87% [2] 9.87% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 40.2 [3],[4],[5]   $ 40.2 [3],[4],[5]   $ 1.4 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 39.8 [3],[4],[5]   $ 39.8 [3],[4],[5]   $ 1.4 [6],[7],[8]            
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.87% [2]   9.87% [2]   7.25% [1] 9.87% [2] 9.87% [2] 9.87% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 12.6 [3],[4],[5]   $ 12.6 [3],[4],[5]   $ 44.3 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 12.4 [3],[4],[5]   $ 12.4 [3],[4],[5]   $ 44.3 [6],[7],[8]            
Investment, Identifier [Axis]: People Corporation, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.13% [2]   9.13% [2]   7.25% [1] 9.13% [2] 9.13% [2] 9.13% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 6.2 [3],[4],[5]   $ 6.2 [3],[4],[5]   $ 13.8 [6],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 6.0 [3],[4],[5]   $ 6.0 [3],[4],[5]   $ 13.8 [6],[8]            
Investment, Identifier [Axis]: People Corporation, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.92% [2]   9.92% [2]   7.25% [1] 9.92% [2] 9.92% [2] 9.92% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 5.1 [3],[4],[5]   $ 5.1 [3],[4],[5]   $ 2.9 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 5.1 [3],[4],[5]   5.1 [3],[4],[5]   2.9 [6],[7],[8]            
Investment, Identifier [Axis]: Perforce Software, Inc. | Revolving and delayed draw loan commitments                      
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 commitments 0.5   0.5   0.5            
Investment, Identifier [Axis]: Perforce Software, Inc., First lien senior secured revolving loan                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0   $ 0.0                
Investment, Identifier [Axis]: PetVet Care Centers, LLC, First lien senior secured 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 [3],[4] $ 5.3   $ 5.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 5.3   5.3                
Investment, Identifier [Axis]: Petroleum Service Group LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 17.6   17.6   16.9            
Less: funded commitments (3.2)   (3.2)   (3.8)            
Total unfunded commitments 14.4   14.4   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 commitments $ 14.4   $ 14.4   $ 13.1            
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.82% [2]   8.82% [2]   7.00% [1] 8.82% [2] 8.82% [2] 8.82% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 34.6 [3],[4]   $ 34.6 [3],[4]   $ 8.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 34.6 [3],[4]   $ 34.6 [3],[4]   $ 8.1 [6],[7]            
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.14% [2]   9.14% [2]   1.00% [1] 9.14% [2] 9.14% [2] 9.14% [2] 1.00% [1] 1.00% [1] 1.00% [1]
Total first lien senior secured loans $ 8.0 [3],[4]   $ 8.0 [3],[4]   $ 0.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 8.0 [3],[4]   $ 8.0 [3],[4]   $ 0.2 [6],[7]            
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.50% [2]   9.50% [2]   7.00% [1] 9.50% [2] 9.50% [2] 9.50% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 3.5 [3],[4]   $ 3.5 [3],[4]   $ 34.2 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 3.5 [3],[4]   $ 3.5 [3],[4]   $ 34.2 [6]            
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 0.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 0.7            
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.76% [2]   8.76% [2]   7.00% [1] 8.76% [2] 8.76% [2] 8.76% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 1.8 [3],[4],[13]   $ 1.8 [3],[4],[13]   $ 2.2 [6],[7],[14]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.8 [3],[4],[13]   1.8 [3],[4],[13]   $ 2.2 [6],[7],[14]            
Investment, Identifier [Axis]: Petvisor Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 40.1   40.1                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 40.1   40.1                
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 commitments $ 40.1   $ 40.1                
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.43%   7.43%     7.43% 7.43% 7.43%      
Total first lien senior secured loans [3],[4] $ 19.0   $ 19.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 18.6   18.6                
Investment, Identifier [Axis]: PhyMED Management LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         15.00%       15.00% 15.00% 15.00%
Total first lien senior secured loans [6],[7]         $ 55.7            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         52.4            
Investment, Identifier [Axis]: Piper Jaffray Merchant Banking Fund I, L.P., Limited partnership interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.5 [5],[11]   0.5 [5],[11]   1.0 [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]                      
Total investments at fair value $ 0.6 [4]   $ 0.6 [4]   $ 0.9 [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 [2] 6.81%   6.81%     6.81% 6.81% 6.81%      
Total first lien senior secured loans [3],[4] $ 22.7   $ 22.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 21.3   $ 21.3                
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 10.16% [2]   10.16% [2]   8.00% [1] 10.16% [2] 10.16% [2] 10.16% [2] 8.00% [1] 8.00% [1] 8.00% [1]
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]                      
Total investments at fair value 51.7 [3],[4]   51.7 [3],[4]   55.0 [6],[7]            
Investment, Identifier [Axis]: Pluralsight, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.3   0.3   0.3            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 0.3   0.3   0.3            
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 commitments $ 0.3   $ 0.3   $ 0.3            
Investment, Identifier [Axis]: Pluralsight, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.68% [2]   10.68% [2]   9.00% [1] 10.68% [2] 10.68% [2] 10.68% [2] 9.00% [1] 9.00% [1] 9.00% [1]
Total first lien senior secured loans $ 106.2 [3],[4]   $ 106.2 [3],[4]   $ 117.7 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 106.2 [3],[4]   106.2 [3],[4]   117.7 [6],[7]            
Investment, Identifier [Axis]: Poplicus Incorporated, Warrant to purchase shares of Series C preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Poplicus Incorporated, Warrant to purchase up to 2,402,991 shares of Series C preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: PosiGen, Inc., Warrant to purchase shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: PosiGen, Inc., Warrant to purchase shares of series D-1 preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: PosiGen, Inc., Warrant to purchase up to 1,112,022 shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: PosiGen, Inc., Warrant to purchase up to 101,555 shares of series D-1 preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: Potomac Intermediate Holdings II LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     0.0   68.4            
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):     (15.9)   0.0            
Total investments at fair value 163.8   163.8   179.7            
Investment, Identifier [Axis]: Potomac Intermediate Holdings II LLC, Series A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 163.8   163.8   179.7            
Investment, Identifier [Axis]: PracticeTek Purchaser, LLC and GSV PracticeTek Holdings, LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         8.2            
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         15.5            
Less: funded commitments         0.0            
Total unfunded commitments         15.5            
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 commitments         15.5            
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]                      
Total investments at fair value $ 23.8 [4]   $ 23.8 [4]   $ 13.4 [7]            
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.03% [2]   9.03% [2]   7.00% [1] 9.03% [2] 9.03% [2] 9.03% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 13.8 [3],[4],[5]   $ 13.8 [3],[4],[5]   $ 45.8 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 13.6 [3],[4],[5]   $ 13.6 [3],[4],[5]   45.4 [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 [2] 9.03%   9.03%     9.03% 9.03% 9.03%      
Total first lien senior secured loans [3],[4],[5] $ 4.0   $ 4.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 4.0   $ 4.0                
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.03%   9.03%     9.03% 9.03% 9.03%      
Total first lien senior secured loans [3],[4],[5] $ 13.8   $ 13.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] 13.7   13.7                
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 19.2   19.2                
Less: funded commitments (6.2)   (6.2)                
Total unfunded commitments 13.0   13.0                
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 commitments $ 13.0   $ 13.0                
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.15%   9.15%     9.15% 9.15% 9.15%      
Total first lien senior secured loans [3],[4],[5] $ 14.7   $ 14.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 14.7   $ 14.7                
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 [2] 8.78%   8.78%     8.78% 8.78% 8.78%      
Total first lien senior secured loans [3],[4],[5] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 0.1   $ 0.1                
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 [2] 9.05%   9.05%     9.05% 9.05% 9.05%      
Total first lien senior secured loans [3],[4],[5] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 0.1   $ 0.1                
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 [2] 9.15%   9.15%     9.15% 9.15% 9.15%      
Total first lien senior secured loans [3],[4],[5] $ 6.2   $ 6.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] 6.2   6.2                
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 11.0   11.0   11.0            
Less: funded commitments (1.4)   (1.4)   0.0            
Total unfunded commitments 9.6   9.6   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 commitments $ 9.6   $ 9.6   $ 11.0            
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 9.12% [2]   9.12% [2]   6.75% [1] 9.12% [2] 9.12% [2] 9.12% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 27.3 [3],[4]   $ 27.3 [3],[4]   $ 27.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 25.7 [3],[4]   $ 25.7 [3],[4]   27.3 [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 [2] 9.12%   9.12%     9.12% 9.12% 9.12%      
Total first lien senior secured loans [3],[4] $ 1.4   $ 1.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 1.3   1.3                
Investment, Identifier [Axis]: Premier Specialties, Inc. and RMCF V CIV XLIV, L.P., Limited partner interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 2.4 [4]   2.4 [4]   4.1 [7]            
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 36.0   36.0   36.0            
Less: funded commitments (0.6)   (0.6)   (12.6)            
Total unfunded commitments 35.4   35.4   23.4            
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 commitments 35.4   35.4   23.4            
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 13.8 [4]   $ 13.8 [4]   $ 17.5 [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 7.92% [2]   7.92% [2]   3.72% [1] 7.92% [2] 7.92% [2] 7.92% [2] 3.72% [1] 3.72% [1] 3.72% [1]
Total first lien senior secured loans $ 8.6 [3],[4]   $ 8.6 [3],[4]   $ 8.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 8.2 [3],[4]   8.2 [3],[4]   $ 8.6            
Investment, Identifier [Axis]: Premise Health Holding Corp. and OMERS Bluejay Investment Holdings LP, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         3.41%       3.41% 3.41% 3.41%
Total first lien senior secured loans [7],[14]         $ 12.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0 [15]   $ 0.0 [15]   $ 12.0 [7],[14]            
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 11.67% [2]   11.67% [2]   7.72% [1] 11.67% [2] 11.67% [2] 11.67% [2] 7.72% [1] 7.72% [1] 7.72% [1]
Total first lien senior secured loans $ 67.1 [4]   $ 67.1 [4]   $ 67.1 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 65.1 [4]   65.1 [4]   67.1 [7]            
Investment, Identifier [Axis]: Prime Buyer, L.L.C. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 15.9   15.9                
Less: funded commitments (2.0)   (2.0)                
Total unfunded commitments 13.9   13.9                
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 commitments $ 13.9   $ 13.9                
Investment, Identifier [Axis]: Prime Buyer, L.L.C., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.50%   10.50%     10.50% 10.50% 10.50%      
Total first lien senior secured loans [3],[4] $ 1.3   $ 1.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 1.3   $ 1.3                
Investment, Identifier [Axis]: Prime Buyer, L.L.C., First lien senior secured revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.40%   7.40%     7.40% 7.40% 7.40%      
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.6   0.6                
Investment, Identifier [Axis]: Primrose Holding Corporation                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     0.0   0.0            
Redemptions (cost)     0.0   0.0            
Sales (cost)     4.6   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):     28.9   0.0            
Net unrealized gains (losses):     (22.4)   12.9            
Total investments at fair value $ 0.0   $ 0.0   27.0            
Investment, Identifier [Axis]: Primrose Holding Corporation, Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         $ 27.0            
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.27% [2]   8.27% [2]   6.75% [1] 8.27% [2] 8.27% [2] 8.27% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 6.7 [3],[4],[5]   $ 6.7 [3],[4],[5]   $ 35.8 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 6.5 [3],[4],[5]   $ 6.5 [3],[4],[5]   35.8 [6],[7],[8]            
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., Senior preferred stock                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 15.75%   15.75%     15.75% 15.75% 15.75%      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 72.0 [4],[5]   $ 72.0 [4],[5]   68.3 [6],[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]                      
Total investments at fair value [8]         3.4            
Investment, Identifier [Axis]: Priority Holdings, LLC and Priority Technology Holdings, Inc., Warrant to purchase up to 527,226 units of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] 2.4   2.4                
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 5.9   5.9   29.7            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 5.9   5.9   29.7            
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 commitments 5.9   5.9   29.7            
Investment, Identifier [Axis]: Pritchard Industries, LLC and LJ Pritchard TopCo Holdings, LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 9.0 [4]   $ 9.0 [4]   $ 7.9 [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 9.13% [2]   9.13% [2]   6.25% [1] 9.13% [2] 9.13% [2] 9.13% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 97.6 [3],[4]   $ 97.6 [3],[4]   $ 93.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 95.7 [3],[4]   95.7 [3],[4]   92.8 [6],[7]            
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     2.5   11.5            
Redemptions (cost)     0.2   0.1            
Sales (cost)     0.0   0.0            
Interest income     4.5   4.8            
Capital structuring service fees     0.1   0.3            
Dividend income     0.0   0.0            
Other income     0.0   0.0            
Net realized gains (losses):     0.0   0.1            
Net unrealized gains (losses):     33.8   (4.3)            
Total investments at fair value 96.5   96.5   56.3            
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         2.5            
Less: funded commitments         0.0            
Total unfunded commitments         2.5            
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 commitments         2.5            
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 34.6 [4]   $ 34.6 [4]   $ 0.6 [7]            
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.00%       6.00% 6.00% 6.00%
Total first lien senior secured loans [6],[7]         $ 15.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         15.0            
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 | Rate [2] 11.49%   11.49%     11.49% 11.49% 11.49%      
Total first lien senior secured loans [3],[4] $ 38.3   $ 38.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 38.3   $ 38.3                
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 | Rate [2] 10.49%   10.49%     10.49% 10.49% 10.49%      
Total first lien senior secured loans $ 15.3 [3],[4]   $ 15.3 [3],[4]   34.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 15.3 [3],[4]   $ 15.3 [3],[4]   $ 34.9 [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 | Rate 11.10% [2]   11.10% [2]   8.50% [1] 11.10% [2] 11.10% [2] 11.10% [2] 8.50% [1] 8.50% [1] 8.50% [1]
Total first lien senior secured loans $ 7.5 [3],[4]   $ 7.5 [3],[4]   $ 0.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 7.5 [3],[4]   $ 7.5 [3],[4]   0.8 [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 | Rate [2] 11.17%   11.17%     11.17% 11.17% 11.17%      
Total first lien senior secured loans $ 0.8 [3],[4]   $ 0.8 [3],[4]   5.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.8 [3],[4]   0.8 [3],[4]   5.0 [6],[7]            
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 [4] 16.6   16.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 15.8   15.8                
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Series E preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 0.7   0.7                
Investment, Identifier [Axis]: Professional Fighters League, LLC and PFL MMA, Inc., Warrant to purchase up to 3,223,122 shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 2.7   2.7                
Investment, Identifier [Axis]: ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 13.3   13.3   15.0            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 13.3   13.3   15.0            
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 commitments $ 13.3   $ 13.3   $ 15.0            
Investment, Identifier [Axis]: ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.17% [2]   9.17% [2]   6.25% [1] 9.17% [2] 9.17% [2] 9.17% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 5.5 [3],[4]   $ 5.5 [3],[4]   $ 3.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 5.5 [3],[4]   5.5 [3],[4]   3.9 [6],[7]            
Investment, Identifier [Axis]: ProfitSolv Purchaser, Inc. and PS Co-Invest, L.P., Limited partnership units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.5 [4]   1.5 [4]   1.6 [7]            
Investment, Identifier [Axis]: Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc., Class A common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 13.4 [4]   13.4 [4]   16.8 [7]            
Investment, Identifier [Axis]: Project Alpha Intermediate Holding, Inc. and Qlik Parent, Inc., Class B common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.1 [4]   $ 0.1 [4]   0.2 [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 [2] 7.12%   7.12%     7.12% 7.12% 7.12%      
Total first lien senior secured loans [4],[11] $ 2.9   $ 2.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[11] 2.7   2.7                
Investment, Identifier [Axis]: Project Essential Bidco, Inc. and Project Essential Super Parent, Inc. | Revolving and delayed draw loan commitments                      
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 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 6.75% [2]   6.75% [2]   6.75% [1] 6.75% [2] 6.75% [2] 6.75% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 36.3 [3],[4]   $ 36.3 [3],[4]   $ 36.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 34.8 [3],[4]   34.8 [3],[4]   35.8 [6],[7]            
Investment, Identifier [Axis]: Project Essential Bidco, Inc. and Project Essential Super Parent, Inc., Preferred shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 29.4 [4]   29.4 [4]   28.5 [6],[7]            
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 5.5   5.5   43.8            
Less: funded commitments (2.1)   (2.1)   (0.9)            
Total unfunded commitments 3.4   3.4   42.9            
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 commitments 3.4   3.4   42.9            
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         1.9            
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., Class B units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 5.1 [4]   $ 5.1 [4]   $ 0.8 [7]            
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         9.25%       9.25% 9.25% 9.25%
Total first lien senior secured loans [6]         $ 44.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 44.1            
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 [2] 10.28%   10.28%     10.28% 10.28% 10.28%      
Total first lien senior secured loans [3],[4] $ 43.8   $ 43.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 43.8   $ 43.8                
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 10.78% [2]   10.78% [2]   9.25% [1] 10.78% [2] 10.78% [2] 10.78% [2] 9.25% [1] 9.25% [1] 9.25% [1]
Total first lien senior secured loans $ 19.2 [3],[4]   $ 19.2 [3],[4]   $ 12.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 19.2 [3],[4]   $ 19.2 [3],[4]   $ 12.9 [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 10.78% [2]   10.78% [2]   9.25% [1] 10.78% [2] 10.78% [2] 10.78% [2] 9.25% [1] 9.25% [1] 9.25% [1]
Total first lien senior secured loans $ 12.8 [3],[4]   $ 12.8 [3],[4]   $ 19.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 12.8 [3],[4]   $ 12.8 [3],[4]   $ 19.4 [6],[7]            
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 10.27% [2]   10.27% [2]   10.50% [1] 10.27% [2] 10.27% [2] 10.27% [2] 10.50% [1] 10.50% [1] 10.50% [1]
Total first lien senior secured loans $ 2.1 [3],[4],[13]   $ 2.1 [3],[4],[13]   $ 0.8 [6],[7],[14]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.1 [3],[4],[13]   $ 2.1 [3],[4],[13]   $ 0.8 [6],[7],[14]            
Investment, Identifier [Axis]: Project Ruby Ultimate Parent Corp. (dba Wellsky), Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.25%       7.25% 7.25% 7.25%
Total first lien senior secured loans [6],[7]         $ 193.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         193.1            
Investment, Identifier [Axis]: Project Ruby Ultimate Parent Corp., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.62%   9.62%     9.62% 9.62% 9.62%      
Total first lien senior secured loans [3],[4] $ 193.1   $ 193.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 185.3   185.3                
Investment, Identifier [Axis]: Proofpoint, Inc. | Revolving and delayed draw loan commitments                      
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 commitments $ 3.1   $ 3.1   3.1            
Investment, Identifier [Axis]: Proofpoint, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 6.32%   6.32%     6.32% 6.32% 6.32%      
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]                      
Total investments at fair value $ 0.9 [3],[4],[11]   $ 0.9 [3],[4],[11]   $ 1.0 [6],[7],[12]            
Investment, Identifier [Axis]: Proofpoint, Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.32% [2]   9.32% [2]   6.75% [1] 9.32% [2] 9.32% [2] 9.32% [2] 6.75% [1] 6.75% [1] 6.75% [1]
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]                      
Total investments at fair value 34.6 [3],[4]   34.6 [3],[4]   $ 34.6 [6],[7]            
Investment, Identifier [Axis]: Proofpoint, Inc.,h First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         3.75%       3.75% 3.75% 3.75%
Investment, Identifier [Axis]: Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.9   4.9                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 4.9   4.9                
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 commitments 4.9   4.9                
Investment, Identifier [Axis]: Pueblo Mechanical and Controls, LLC and OMERS PMC Investment Holdings, LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 9.7   $ 9.7                
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] 8.78%   8.78%     8.78% 8.78% 8.78%      
Total first lien senior secured loans [3],[4] $ 4.9   $ 4.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 4.8   4.8                
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 9.7   9.7   $ 9.7            
Less: funded commitments (9.7)   (9.7)   (9.7)            
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 commitments $ 0.0   $ 0.0   $ 0.0            
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.12% [2]   10.12% [2]   8.00% [1] 10.12% [2] 10.12% [2] 10.12% [2] 8.00% [1] 8.00% [1] 8.00% [1]
Total first lien senior secured loans $ 18.3 [3],[4]   $ 18.3 [3],[4]   $ 18.2 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 18.3 [3],[4]   $ 18.3 [3],[4]   $ 16.8 [6]            
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.12% [2]   10.12% [2]   8.00% [1] 10.12% [2] 10.12% [2] 10.12% [2] 8.00% [1] 8.00% [1] 8.00% [1]
Total first lien senior secured loans $ 6.4 [3],[4]   $ 6.4 [3],[4]   $ 6.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 6.4 [3],[4]   $ 6.4 [3],[4]   $ 5.8 [6],[7]            
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.99% [2]   9.99% [2]   8.00% [1] 9.99% [2] 9.99% [2] 9.99% [2] 8.00% [1] 8.00% [1] 8.00% [1]
Total first lien senior secured loans $ 9.7 [3],[4],[13]   $ 9.7 [3],[4],[13]   $ 9.6 [6],[7],[14]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 9.7 [3],[4],[13]   9.7 [3],[4],[13]   8.8 [6],[7],[14]            
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, Preferred membership units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.9   0.9   0.5            
Investment, Identifier [Axis]: QF Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 6.0   6.0   6.0            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 6.0   6.0   6.0            
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 commitments $ 6.0   $ 6.0   $ 6.0            
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.25%       7.25% 7.25% 7.25%
Total first lien senior secured loans [6],[7]         $ 8.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 8.1            
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.76%   8.76%     8.76% 8.76% 8.76%      
Total first lien senior secured loans [3],[4] $ 8.1   $ 8.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 8.1   $ 8.1                
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.43% [2]   10.43% [2]   7.50% [1] 10.43% [2] 10.43% [2] 10.43% [2] 7.50% [1] 7.50% [1] 7.50% [1]
Total first lien senior secured loans $ 6.8 [3],[4]   $ 6.8 [3],[4]   $ 15.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 6.8 [3],[4]   6.8 [3],[4]   15.5 [6],[7]            
Investment, Identifier [Axis]: R2 Acquisition Corp., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.2 [4]   0.2 [4]   0.5 [7]            
Investment, Identifier [Axis]: RB Holdings InterCo, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 5.6   5.6                
Less: funded commitments (1.4)   (1.4)                
Total unfunded commitments 4.2   4.2                
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 commitments $ 4.2   $ 4.2                
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.71%   7.71%     7.71% 7.71% 7.71%      
Total first lien senior secured loans [3],[4] $ 11.5   $ 11.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 11.3   $ 11.3                
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.83%   7.83%     7.83% 7.83% 7.83%      
Total first lien senior secured loans [3],[4] $ 1.4   $ 1.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 1.4   1.4                
Investment, Identifier [Axis]: RC V Tecmo Investor LLC, Common member units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 22.6 [4]   22.6 [4]   19.3 [7]            
Investment, Identifier [Axis]: RE Community Holdings GP, LLC and RE Community Holdings, LP, Limited partnership interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.0 [7]            
Investment, Identifier [Axis]: RE Community Holdings GP, LLC and RE Community Holdings, LP, Limited partnership interest 2                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.0 [7]            
Investment, Identifier [Axis]: RF HP SCF Investor, LLC, Membership interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 25.3 [4],[5]   25.3 [4],[5]   19.0 [7],[8]            
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.9   2.9                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 2.9   2.9                
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 commitments 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]                      
Total investments at fair value [4] $ 5.5   $ 5.5                
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.95%   9.95%     9.95% 9.95% 9.95%      
Total first lien senior secured loans [3],[4] $ 40.2   $ 40.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 39.4   $ 39.4                
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.42%   9.42%     9.42% 9.42% 9.42%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.1   0.1                
Investment, Identifier [Axis]: RMS HoldCo II, LLC and RMS Group Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         2.9            
Less: funded commitments         0.0            
Total unfunded commitments         2.9            
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 commitments         2.9            
Investment, Identifier [Axis]: RMS Holdco II, LLC & RMS Group Holdings, Inc., Class A common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 4.6            
Investment, Identifier [Axis]: RMS Holdco II, LLC & RMS Group Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6],[7]         $ 23.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         23.3            
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.6   0.6   0.6            
Less: funded commitments 0.0   0.0   (0.3)            
Total unfunded commitments 0.6   0.6   0.3            
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 commitments $ 0.6   $ 0.6   $ 0.3            
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.30% [2]   8.30% [2]   6.25% [1] 8.30% [2] 8.30% [2] 8.30% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 32.9 [3],[4]   $ 32.9 [3],[4]   $ 33.1 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 31.9 [3],[4]   31.9 [3],[4]   $ 33.1 [6]            
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.75%       7.75% 7.75% 7.75%
Total first lien senior secured loans [6],[7],[14]         $ 0.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[14]         0.3            
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 15.9   15.9   15.9            
Less: funded commitments (9.8)   (9.8)   (5.0)            
Total unfunded commitments 6.1   6.1   10.9            
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 commitments $ 6.1   $ 6.1   $ 10.9            
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.02% [2]   10.02% [2]   8.25% [1] 10.02% [2] 10.02% [2] 10.02% [2] 8.25% [1] 8.25% [1] 8.25% [1]
Total first lien senior secured loans $ 22.6 [3],[4]   $ 22.6 [3],[4]   $ 28.5 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 22.1 [3],[4]   $ 22.1 [3],[4]   $ 28.5 [6]            
Investment, Identifier [Axis]: RTI Surgical, Inc. and Pioneer Surgical Technology, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.57% [2]   9.57% [2]   8.25% [1] 9.57% [2] 9.57% [2] 9.57% [2] 8.25% [1] 8.25% [1] 8.25% [1]
Total first lien senior secured loans $ 9.8 [3],[4]   $ 9.8 [3],[4]   $ 5.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 9.6 [3],[4]   9.6 [3],[4]   5.0 [6],[7]            
Investment, Identifier [Axis]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.7   2.7   2.9            
Less: funded commitments (0.9)   (0.9)   0.0            
Total unfunded commitments 1.8   1.8   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 commitments $ 1.8   $ 1.8   2.9            
Investment, Identifier [Axis]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.94%   7.94%     7.94% 7.94% 7.94%      
Total first lien senior secured loans [3],[4],[5] $ 0.2   $ 0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 0.2   $ 0.2                
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 [2] 8.80%   8.80%     8.80% 8.80% 8.80%      
Total first lien senior secured loans [3],[4],[5] $ 0.7   $ 0.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] 0.7   0.7                
Investment, Identifier [Axis]: Raptor Technologies, LLC, Sycamore Bidco LTD and Rocket Parent, LLC | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value $ 5.4   $ 5.4   $ 4.8            
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 8.92% [2]   8.92% [2]   7.00% [1] 8.92% [2] 8.92% [2] 8.92% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 8.5 [3],[4],[5]   $ 8.5 [3],[4],[5]   $ 28.5 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 8.4 [3],[4],[5]   $ 8.4 [3],[4],[5]   $ 28.2 [6],[7],[8]            
Investment, Identifier [Axis]: Rawlings Sporting Goods Company, Inc. and Easton Diamond Sports, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.42% [2]   10.42% [2]   7.75% [1] 10.42% [2] 10.42% [2] 10.42% [2] 7.75% [1] 7.75% [1] 7.75% [1]
Total first lien senior secured loans $ 49.8 [3],[4]   $ 49.8 [3],[4]   $ 93.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 49.8 [3],[4]   $ 49.8 [3],[4]   $ 93.2 [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 10.42% [2]   10.42% [2]   7.75% [1] 10.42% [2] 10.42% [2] 10.42% [2] 7.75% [1] 7.75% [1] 7.75% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 8.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 8.8 [6],[7]            
Investment, Identifier [Axis]: RealPage, Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.62% [2]   9.62% [2]   7.25% [1] 9.62% [2] 9.62% [2] 9.62% [2] 7.25% [1] 7.25% [1] 7.25% [1]
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]                      
Total investments at fair value 83.2 [3],[4]   83.2 [3],[4]   84.1 [6],[7]            
Investment, Identifier [Axis]: Reddy Ice LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.2   0.2   0.3            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 0.2   0.2   0.3            
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 commitments $ 0.2   $ 0.2   $ 0.3            
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.79% [2]   8.79% [2]   7.50% [1] 8.79% [2] 8.79% [2] 8.79% [2] 7.50% [1] 7.50% [1] 7.50% [1]
Total first lien senior secured loans $ 61.4 [3],[4]   $ 61.4 [3],[4]   $ 61.9 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 60.8 [3],[4]   $ 60.8 [3],[4]   $ 61.9 [6]            
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.79% [2]   8.79% [2]   7.50% [1] 8.79% [2] 8.79% [2] 8.79% [2] 7.50% [1] 7.50% [1] 7.50% [1]
Total first lien senior secured loans $ 12.9 [3],[4]   $ 12.9 [3],[4]   $ 4.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 12.8 [3],[4]   $ 12.8 [3],[4]   $ 4.3 [6],[7]            
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.79% [2]   8.79% [2]   7.50% [1] 8.79% [2] 8.79% [2] 8.79% [2] 7.50% [1] 7.50% [1] 7.50% [1]
Total first lien senior secured loans $ 4.3 [3],[4]   $ 4.3 [3],[4]   $ 13.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 4.2 [3],[4]   4.2 [3],[4]   $ 13.0 [6],[7]            
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 9.5   9.5   4.7            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 9.5   9.5   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 commitments $ 9.5   $ 9.5   $ 4.7            
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.87% [2]   9.87% [2]   8.00% [1] 9.87% [2] 9.87% [2] 9.87% [2] 8.00% [1] 8.00% [1] 8.00% [1]
Total first lien senior secured loans $ 5.6 [3],[4]   $ 5.6 [3],[4]   $ 1.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 5.6 [3],[4]   $ 5.6 [3],[4]   $ 1.0 [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 9.78% [2]   9.78% [2]   8.00% [1] 9.78% [2] 9.78% [2] 9.78% [2] 8.00% [1] 8.00% [1] 8.00% [1]
Total first lien senior secured loans $ 0.8 [3],[4]   $ 0.8 [3],[4]   $ 12.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.8 [3],[4]   $ 0.8 [3],[4]   12.5 [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 [2] 9.87%   9.87%     9.87% 9.87% 9.87%      
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.2   0.2                
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, Series D units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 20.4   20.4   11.6            
Investment, Identifier [Axis]: Reef Lifestyle, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 44.1   44.1   32.8            
Less: funded commitments (34.6)   (34.6)   (13.2)            
Total unfunded commitments 9.5   9.5   19.6            
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 commitments $ 9.5   $ 9.5   $ 19.6            
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6]         $ 25.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 25.0            
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.57%   9.57%     9.57% 9.57% 9.57%      
Total first lien senior secured loans [3],[4] $ 24.0   $ 24.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 23.5   $ 23.5                
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.62% [2]   9.62% [2]   8.50% [1] 9.62% [2] 9.62% [2] 9.62% [2] 8.50% [1] 8.50% [1] 8.50% [1]
Total first lien senior secured loans $ 1.2 [3],[4]   $ 1.2 [3],[4]   $ 1.1 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.2 [3],[4]   $ 1.2 [3],[4]   $ 1.1 [6]            
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6],[7],[14]         $ 12.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[14]         $ 12.1            
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.48%   9.48%     9.48% 9.48% 9.48%      
Total first lien senior secured loans [3],[4],[13] $ 33.4   $ 33.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[13] $ 32.8   $ 32.8                
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.62% [2]   9.62% [2]   8.50% [1] 9.62% [2] 9.62% [2] 9.62% [2] 8.50% [1] 8.50% [1] 8.50% [1]
Total first lien senior secured loans $ 0.8 [3],[4]   $ 0.8 [3],[4]   $ 0.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.8 [3],[4]   0.8 [3],[4]   0.6 [6],[7]            
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase shares of common stock 2                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase up to 5,393,194 units of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: Regent Education, Inc., Warrant to purchase up to 987 units of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: Registrar Intermediate, LLC and PSP Registrar Co-Investment Fund, L.P. | Revolving and delayed draw loan commitments                      
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 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 8.12% [2]   8.12% [2]   6.50% [1] 8.12% [2] 8.12% [2] 8.12% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 8.7 [3],[4]   $ 8.7 [3],[4]   $ 37.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 8.7 [3],[4]   8.7 [3],[4]   37.5 [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]                      
Total investments at fair value 2.8 [4]   2.8 [4]   2.6 [7]            
Investment, Identifier [Axis]: Relativity ODA LLC | Revolving and delayed draw loan commitments                      
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 commitments $ 3.8   $ 3.8   3.8            
Investment, Identifier [Axis]: Relativity ODA LLC, First lien senior secured 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 $ 21.9 [3],[4]   $ 21.9 [3],[4]   59.8 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 21.9 [3],[4]   21.9 [3],[4]   59.8 [6],[7]            
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.3   7.3   7.3            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 7.3   7.3   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 commitments 7.3   7.3   7.3            
Investment, Identifier [Axis]: Repairify, Inc. and Repairify Holdings, LLC, Class A common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 4.5 [4]   4.5 [4]   4.8 [7]            
Investment, Identifier [Axis]: Respicardia, Inc., Warrant to purchase shares of Series C preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Revalize, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 1.2   1.2                
Less: funded commitments (0.9)   (0.9)                
Total unfunded commitments 0.3   0.3                
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 commitments $ 0.3   $ 0.3                
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.42%   9.42%     9.42% 9.42% 9.42%      
Total first lien senior secured loans [3],[4] $ 0.7   $ 0.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.6   $ 0.6                
Investment, Identifier [Axis]: Revalize, Inc., First lien senior secured revolving 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 [3],[4] $ 0.9   $ 0.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.9   0.9                
Investment, Identifier [Axis]: Rialto Management Group, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 1.3   1.3   1.3            
Less: funded commitments (0.2)   (0.2)   (0.2)            
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 commitments $ 1.1   $ 1.1   $ 1.1            
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6],[7],[8]         $ 9.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[8]         $ 9.5            
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.62%   8.62%     8.62% 8.62% 8.62%      
Total first lien senior secured loans [3],[4],[5] $ 0.3   $ 0.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] $ 0.3   $ 0.3                
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.62% [2]   8.62% [2]   4.34% [1] 8.62% [2] 8.62% [2] 8.62% [2] 4.34% [1] 4.34% [1] 4.34% [1]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.7 [8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 0.7 [8]            
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.62% [2]   8.62% [2]   4.35% [1] 8.62% [2] 8.62% [2] 8.62% [2] 4.35% [1] 4.35% [1] 4.35% [1]
Total first lien senior secured loans $ 0.1 [3],[4],[5]   $ 0.1 [3],[4],[5]   $ 7.7 [7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [3],[4],[5]   0.1 [3],[4],[5]   $ 7.7 [7],[8]            
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [5],[15]   0.0 [5],[15]   $ 0.0 [8],[16]            
Investment, Identifier [Axis]: Riser Merger Sub, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.8   2.8                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 2.8   2.8                
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 commitments $ 2.8   $ 2.8                
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.62%   8.62%     8.62% 8.62% 8.62%      
Total first lien senior secured loans [3],[4] $ 5.9   $ 5.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 5.8   $ 5.8                
Investment, Identifier [Axis]: Riverview Power LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 12.68% [2]   12.68% [2]   10.00% [1] 12.68% [2] 12.68% [2] 12.68% [2] 10.00% [1] 10.00% [1] 10.00% [1]
Total first lien senior secured loans $ 50.1 [3],[4]   $ 50.1 [3],[4]   $ 54.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 50.1 [3],[4]   50.1 [3],[4]   54.2 [6],[7]            
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 6.2   6.2   6.2            
Less: funded commitments (0.9)   (0.9)   (0.4)            
Total unfunded commitments 5.3   5.3   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 commitments $ 5.3   $ 5.3   $ 5.8            
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.81% [2]   8.81% [2]   7.00% [1] 8.81% [2] 8.81% [2] 8.81% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 17.0 [3],[4]   $ 17.0 [3],[4]   $ 17.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 16.5 [3],[4]   $ 16.5 [3],[4]   $ 16.9 [6],[7]            
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.82% [2]   8.82% [2]   7.00% [1] 8.82% [2] 8.82% [2] 8.82% [2] 7.00% [1] 7.00% [1] 7.00% [1]
Total first lien senior secured loans $ 0.9 [3],[4]   $ 0.9 [3],[4]   $ 0.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.9 [3],[4]   0.9 [3],[4]   0.3 [6],[7]            
Investment, Identifier [Axis]: Rug Doctor, LLC and RD 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     0.0   2.4            
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):     (11.2)   (1.1)            
Total investments at fair value 9.9   9.9   21.0            
Investment, Identifier [Axis]: Rug Doctor, LLC and RD Holdco Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.0            
Investment, Identifier [Axis]: Rug Doctor, LLC and RD Holdco Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans 23.9 [4],[9]   23.9 [4],[9]   22.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 9.9 [4],[9]   9.9 [4],[9]   21.0 [6],[7]            
Investment, Identifier [Axis]: Rug Doctor, LLC and RD Holdco Inc., Warrant to purchase shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         0.0            
Investment, Identifier [Axis]: Rug Doctor, LLC and RD Holdco Inc., Warrant to purchase up to 56,372 shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
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):     0.7   (0.3)            
Total investments at fair value 0.2   0.2   0.2            
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC), Class B common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.2   0.2   0.2            
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC), Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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]                      
Total investments at fair value         0.0            
Investment, Identifier [Axis]: S Toys Holdings LLC (fka The Step2 Company, LLC), Warrant to purchase up to 3,157,895 units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: SCI PH Parent, Inc., Series B shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 3.7 [4]   3.7 [4]   1.2 [7]            
Investment, Identifier [Axis]: SCIH Salt Holdings Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.5   7.5   7.5            
Less: funded commitments (0.3)   (0.3)   (6.2)            
Total unfunded commitments 7.2   7.2   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 commitments $ 7.2   $ 7.2   $ 1.3            
Investment, Identifier [Axis]: SCIH Salt Holdings Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2]   [2]   5.00% [1] [2] [2] [2] 5.00% [1] 5.00% [1] 5.00% [1]
Total first lien senior secured loans [6],[7],[14]         $ 2.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0 [15]   $ 0.0 [15]   1.9 [6],[7],[14]            
Investment, Identifier [Axis]: SCM Insurance Services Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.9   3.9   4.3            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 3.9   3.9   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 commitments $ 3.9   $ 3.9   $ 4.3            
Investment, Identifier [Axis]: SCM Insurance Services Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.45% [2]   10.45% [2]   6.00% [1] 10.45% [2] 10.45% [2] 10.45% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 60.0 [3],[4],[5]   $ 60.0 [3],[4],[5]   $ 20.4 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 60.0 [3],[4],[5]   $ 60.0 [3],[4],[5]   $ 20.4 [6],[7],[8]            
Investment, Identifier [Axis]: SCM Insurance Services Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         10.00%       10.00% 10.00% 10.00%
Total first lien senior secured loans [6],[7],[8]         $ 60.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[8]         $ 60.0            
Investment, Identifier [Axis]: SE1 Generation, LLC, Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.25% [2]   10.25% [2]   10.25% [1] 10.25% [2] 10.25% [2] 10.25% [2] 10.25% [1] 10.25% [1] 10.25% [1]
Total first lien senior secured loans $ 61.6 [4]   $ 61.6 [4]   $ 58.8 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 60.4 [4]   60.4 [4]   57.0 [7]            
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 15.2   15.2   10.2            
Less: funded commitments (6.4)   (6.4)   0.0            
Total unfunded commitments 8.8   8.8   10.2            
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 commitments $ 8.8   $ 8.8   $ 10.2            
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         5.75%       5.75% 5.75% 5.75%
Total first lien senior secured loans [6]         $ 10.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 10.1            
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.45%   8.45%     8.45% 8.45% 8.45%      
Total first lien senior secured loans [3],[4] $ 10.1   $ 10.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 10.1   $ 10.1                
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.45% [2]   8.45% [2]   5.75% [1] 8.45% [2] 8.45% [2] 8.45% [2] 5.75% [1] 5.75% [1] 5.75% [1]
Total first lien senior secured loans $ 6.2 [3],[4]   $ 6.2 [3],[4]   $ 6.3 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 6.2 [3],[4]   $ 6.2 [3],[4]   $ 6.3 [6]            
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.30%   8.30%     8.30% 8.30% 8.30%      
Total first lien senior secured loans [3],[4] $ 0.4   $ 0.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.4   $ 0.4                
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.90%   7.90%     7.90% 7.90% 7.90%      
Total first lien senior secured loans [3] $ 6.4   $ 6.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] $ 6.4   $ 6.4                
Investment, Identifier [Axis]: SG Acquisition, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.17% [2]   9.17% [2]   5.50% [1] 9.17% [2] 9.17% [2] 9.17% [2] 5.50% [1] 5.50% [1] 5.50% [1]
Total first lien senior secured loans $ 33.8 [3],[4]   $ 33.8 [3],[4]   $ 35.6 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 33.8 [3],[4]   33.8 [3],[4]   35.6 [6]            
Investment, Identifier [Axis]: SHO Holding I Corporation, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans 124.9 [4],[9]   124.9 [4],[9]   116.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 82.4 [4],[9]   82.4 [4],[9]   98.9 [6],[7]            
Investment, Identifier [Axis]: SK SPV IV, LLC, Series A common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.0 [7]            
Investment, Identifier [Axis]: SK SPV IV, LLC, Series B common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.0 [7]            
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, Inc | Revolving and delayed draw loan commitments                      
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 commitments         3.8            
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, Inc. | Revolving and delayed draw loan commitments                      
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 commitments 3.8   3.8                
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, Inc., Series A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [4]   0.1 [4]   9.6 [7]            
Investment, Identifier [Axis]: SM Wellness Holdings, Inc. and SM Holdco, Inc., Series B units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 9.7 [4]   9.7 [4]   $ 0.0 [7]            
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 22.7   22.7                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 22.7   22.7                
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 commitments 22.7   22.7                
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, Class A-2 units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 4.8   4.8                
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 [3],[4] 59.4   59.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 54.7   54.7                
Investment, Identifier [Axis]: SOC Telemed, Inc. and PSC Spark Holdings, LP, Warrant to purchase up to 6,118 Class A-2 units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 4.7   $ 4.7                
Investment, Identifier [Axis]: SSE Buyer, Inc., Supply Source Enterprises, Inc., Impact Products LLC, The Safety Zone, LLC and SSE Parent, LP, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 12.89% [2]   12.89% [2]   10.22% [1] 12.89% [2] 12.89% [2] 12.89% [2] 10.22% [1] 10.22% [1] 10.22% [1]
Total first lien senior secured loans $ 20.9 [3],[4]   $ 20.9 [3],[4]   $ 21.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 17.9 [3],[4]   17.9 [3],[4]   19.9 [6],[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-1 units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.2 [4]   0.2 [4]   0.6 [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]                      
Total investments at fair value 0.2 [4]   0.2 [4]   0.6 [7]            
Investment, Identifier [Axis]: SV-Burton Holdings, LLC & LBC Breeze Holdings LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         $ 4.3            
Investment, Identifier [Axis]: SV-Burton Holdings, LLC & LBC Breeze Holdings LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6],[7]         $ 11.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         10.9            
Investment, Identifier [Axis]: SV-Burton Holdings, LLC and LBC Breeze Holdings LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.6   4.6   7.3            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 4.6   4.6   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 commitments 4.6   4.6   7.3            
Investment, Identifier [Axis]: SV-Burton Holdings, LLC and LBC Breeze Holdings LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.7   $ 4.7                
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] 8.31%   8.31%     8.31% 8.31% 8.31%      
Total first lien senior secured loans [3],[4] $ 9.0   $ 9.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 8.9   8.9                
Investment, Identifier [Axis]: SVP-Singer Holdings Inc. and SVP-Singer Holdings LP, Class A common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 17.8 [4]   $ 17.8 [4]   $ 24.5 [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 10.42% [2]   10.42% [2]   7.50% [1] 10.42% [2] 10.42% [2] 10.42% [2] 7.50% [1] 7.50% [1] 7.50% [1]
Total first lien senior secured loans $ 44.6 [3],[4]   $ 44.6 [3],[4]   $ 44.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 39.2 [3],[4]   $ 39.2 [3],[4]   42.3 [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. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         8.5            
Less: funded commitments         0.0            
Total unfunded commitments         8.5            
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 commitments         $ 8.5            
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]                      
Coupon | Rate 10.37% [2]   10.37% [2]   8.25% [1] 10.37% [2] 10.37% [2] 10.37% [2] 8.25% [1] 8.25% [1] 8.25% [1]
Total first lien senior secured loans $ 48.0 [3],[4]   $ 48.0 [3],[4]   $ 46.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 48.0 [3],[4]   48.0 [3],[4]   46.2 [6],[7]            
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC | Revolving and delayed draw loan commitments                      
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 commitments $ 10.5   $ 10.5                
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, 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 [3],[4] $ 14.1   $ 14.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 14.1   14.1                
Investment, Identifier [Axis]: SageSure Holdings, LLC & Insight Catastrophe Group, LLC, Series A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 18.2   18.2                
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC and Landscape Parallel Partners, L.P., Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 9.5            
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC and Landscape Parallel Partners, L.P., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.75%       6.75% 6.75% 6.75%
Total first lien senior secured loans [6],[7]         $ 5.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         5.8            
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC, Tender Lawn Care ULC and Landscape Parallel Partners, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.6   4.6                
Less: funded commitments (0.5)   (0.5)                
Total unfunded commitments 4.1   4.1                
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 commitments 4.1   4.1                
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]                      
Total investments at fair value [4] $ 14.9   $ 14.9                
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 [2] 8.83%   8.83%     8.83% 8.83% 8.83%      
Total first lien senior secured loans [3],[4] $ 0.6   $ 0.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.6   $ 0.6                
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 [2] 8.83%   8.83%     8.83% 8.83% 8.83%      
Total first lien senior secured loans [3],[4] $ 0.5   $ 0.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.5   $ 0.5                
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services, LLC and Landscape Parallel Partners, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         5.1            
Less: funded commitments         0.0            
Total unfunded commitments         5.1            
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 commitments         $ 5.1            
Investment, Identifier [Axis]: SelectQuote, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.03% [2]   11.03% [2]   5.75% [1] 11.03% [2] 11.03% [2] 11.03% [2] 5.75% [1] 5.75% [1] 5.75% [1]
Total first lien senior secured loans $ 22.2 [3],[4]   $ 22.2 [3],[4]   $ 22.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 19.6 [3],[4]   19.6 [3],[4]   22.6 [6],[7]            
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     163.0   232.2            
Redemptions (cost)     29.3   367.7            
Sales (cost)     0.0   0.0            
Interest income     104.5   138.0            
Capital structuring service fees     10.3   18.6            
Dividend income     0.0   0.0            
Other income     4.5   3.8            
Net realized gains (losses):     0.0   0.0            
Net unrealized gains (losses):     0.0   0.0            
Total investments at fair value 1,121.0   1,121.0   987.3            
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC, Member interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [8]         $ 0.0            
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC, Membership interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [5] $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC, Subordinated certificates                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.75% [2]   11.75% [2]   8.21% [1] 11.75% [2] 11.75% [2] 11.75% [2] 8.21% [1] 8.21% [1] 8.21% [1]
Total first lien senior secured loans $ 269,806.0 [5],[15]   $ 269,806.0 [5],[15]   $ 987.3 [8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1,121.0 [5],[15]   1,121.0 [5],[15]   987.3 [8]            
Investment, Identifier [Axis]: Shermco Intermediate Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.0   4.0                
Less: funded commitments (3.1)   (3.1)                
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 commitments $ 0.9   $ 0.9                
Investment, Identifier [Axis]: Shermco Intermediate Holdings, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.75%   9.75%     9.75% 9.75% 9.75%      
Total first lien senior secured loans [4] $ 3.1   $ 3.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 3.1   3.1                
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     2.7   0.8            
Redemptions (cost)     3.9   1.4            
Sales (cost)     18.9   0.0            
Interest income     0.7   1.4            
Capital structuring service fees     0.0   0.0            
Dividend income     0.0   0.0            
Other income     0.1   0.0            
Net realized gains (losses):     0.0   0.1            
Net unrealized gains (losses):     5.6   4.3            
Total investments at fair value 8.8   8.8   23.1            
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.5   2.5   2.5            
Less: funded commitments (0.3)   (0.3)   (1.2)            
Total unfunded commitments 2.2   2.2   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 commitments 2.2   2.2   1.3            
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, Class A preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 3.1 [4]   3.1 [4]   0.4 [7]            
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, Class C preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 3.1 [4]   $ 3.1 [4]   $ 0.4 [7]            
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.55% [2]   8.55% [2]   6.00% [1] 8.55% [2] 8.55% [2] 8.55% [2] 6.00% [1] 6.00% [1] 6.00% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 19.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 19.1 [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 10.25% [2]   10.25% [2]   7.25% [1] 10.25% [2] 10.25% [2] 10.25% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 0.2 [3],[4],[13]   $ 0.2 [3],[4],[13]   $ 1.1 [6],[7],[14]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.2 [3],[4],[13]   0.2 [3],[4],[13]   $ 1.1 [6],[7],[14]            
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, First lien senior secured revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6],[7],[14]         $ 0.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[14]         0.1            
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, Preferred units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 2.3   2.3   2.0 [7]            
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co HoldCo, Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 8.9            
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co HoldCo, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6]         $ 27.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 27.0            
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 [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 1.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         1.0            
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 5.0   5.0   5.0            
Less: funded commitments (2.8)   (2.8)   (1.0)            
Total unfunded commitments 2.2   2.2   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 commitments 2.2   2.2   4.0            
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 12.7   $ 12.7                
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.68%   9.68%     9.68% 9.68% 9.68%      
Total first lien senior secured loans [3],[4] $ 26.8   $ 26.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 26.8   $ 26.8                
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 [2] 9.68%   9.68%     9.68% 9.68% 9.68%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.1   $ 0.1                
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] 9.63%   9.63%     9.63% 9.63% 9.63%      
Total first lien senior secured loans [3] $ 2.8   $ 2.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] 2.8   2.8                
Investment, Identifier [Axis]: SilverBow Resources, Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5],[11] 27.3   27.3                
Investment, Identifier [Axis]: Singer Sewing Company, SVP-Singer Holdings, LLC and SVP-Singer Holdings LP                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)         0.0            
Redemptions (cost)         234.2            
Sales (cost)         0.0            
Interest income         25.4            
Capital structuring service fees         1.9            
Dividend income         6.7            
Other income         0.5            
Net realized gains (losses):         109.7            
Net unrealized gains (losses):         (87.8)            
Total investments at fair value         0.0            
Investment, Identifier [Axis]: SiroMed Physician Services, Inc. and SiroMed Equity Holdings, LLC | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value $ 1.1 [4]   $ 1.1 [4]   $ 0.7 [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 8.43% [2]   8.43% [2]   5.75% [1] 8.43% [2] 8.43% [2] 8.43% [2] 5.75% [1] 5.75% [1] 5.75% [1]
Total first lien senior secured loans $ 10.3 [3],[4]   $ 10.3 [3],[4]   $ 11.5 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 10.3 [3],[4]   10.3 [3],[4]   9.9 [6]            
Investment, Identifier [Axis]: Smarsh Inc. and Skywalker TopCo, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.3   3.3                
Less: funded commitments 0.0   0.0                
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 commitments 3.3   3.3                
Investment, Identifier [Axis]: Smarsh Inc. and Skywalker TopCo, LLC, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 8.4   $ 8.4                
Investment, Identifier [Axis]: Smarsh Inc. and Skywalker TopCo, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.05%   10.05%     10.05% 10.05% 10.05%      
Total first lien senior secured loans [3],[4] $ 10.6   $ 10.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 10.5   10.5                
Investment, Identifier [Axis]: Smarsh Inc., MobileGuard, LLC, Actiance, Inc. and Skywalker TopCo, LLC, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 5.1            
Investment, Identifier [Axis]: Smarsh Inc., MobileGuard, LLC, Actiance, Inc. and Skywalker TopCo, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         9.25%       9.25% 9.25% 9.25%
Total first lien senior secured loans [6],[7]         $ 13.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         13.3            
Investment, Identifier [Axis]: SocialFlow, Inc., Warrant to purchase shares of Series C preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 0.0            
Investment, Identifier [Axis]: SocialFlow, Inc., Warrant to purchase up to 215,331 shares of Series C preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Sophia, L.P., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.67% [2]   11.67% [2]   9.00% [1] 11.67% [2] 11.67% [2] 11.67% [2] 9.00% [1] 9.00% [1] 9.00% [1]
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]                      
Total investments at fair value 103.8 [3],[4]   103.8 [3],[4]   105.9 [6],[7]            
Investment, Identifier [Axis]: SoundCloud Limited, Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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 | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 10.2   10.2                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 10.2   10.2                
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 commitments $ 10.2   $ 10.2                
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp, 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 [3],[4] $ 11.4   $ 11.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 11.2   11.2                
Investment, Identifier [Axis]: Spirit RR Holdings, Inc. and Winterfell Co-Invest SCSp, Limited partner interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 9.8   $ 9.8                
Investment, Identifier [Axis]: Spring Insurance Solutions, LLC | Revolving and delayed draw loan commitments                      
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 commitments         $ 5.6            
Investment, Identifier [Axis]: Spring Insurance Solutions, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.05% [2]   10.05% [2]   7.50% [1] 10.05% [2] 10.05% [2] 10.05% [2] 7.50% [1] 7.50% [1] 7.50% [1]
Total first lien senior secured loans $ 22.1 [3],[4]   $ 22.1 [3],[4]   $ 19.7 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 19.7 [3],[4]   $ 19.7 [3],[4]   $ 18.9 [6]            
Investment, Identifier [Axis]: Stamps.com Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.38% [2]   8.38% [2]   6.50% [1] 8.38% [2] 8.38% [2] 8.38% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 147.1 [3],[4]   $ 147.1 [3],[4]   $ 197.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 142.7 [3],[4]   142.7 [3],[4]   193.9 [6],[7]            
Investment, Identifier [Axis]: Star US Bidco LLC | Revolving and delayed draw loan commitments                      
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 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            
Total investments at fair value 0.0   0.0   0.0            
Investment, Identifier [Axis]: Startec Equity, LLC, Member interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   0.0            
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 1.2   1.2   2.9            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 1.2   1.2   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 commitments $ 1.2   $ 1.2   $ 2.9            
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.10% [2]   9.10% [2]   7.75% [1] 9.10% [2] 9.10% [2] 9.10% [2] 7.75% [1] 7.75% [1] 7.75% [1]
Total first lien senior secured loans $ 52.3 [3],[4],[5]   $ 52.3 [3],[4],[5]   $ 50.5 [6],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 52.3 [3],[4],[5]   $ 52.3 [3],[4],[5]   $ 50.5 [6],[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 9.85% [2]   9.85% [2]   9.00% [1] 9.85% [2] 9.85% [2] 9.85% [2] 9.00% [1] 9.00% [1] 9.00% [1]
Total first lien senior secured loans $ 4.0 [3],[4],[5]   $ 4.0 [3],[4],[5]   $ 0.8 [6],[7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.0 [3],[4],[5]   $ 4.0 [3],[4],[5]   0.8 [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 [2] 9.96%   9.96%     9.96% 9.96% 9.96%      
Total first lien senior secured loans [3],[4],[5] $ 1.7   $ 1.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] 1.7   1.7                
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Limited partnership interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 7.2 [4],[5]   $ 7.2 [4],[5]   $ 6.8 [7],[8]            
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.33% [2]   9.33% [2]   7.50% [1] 9.33% [2] 9.33% [2] 9.33% [2] 7.50% [1] 7.50% [1] 7.50% [1]
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]                      
Total investments at fair value $ 41.1 [3],[4]   $ 41.1 [3],[4]   42.8 [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 [2] 9.33%   9.33%     9.33% 9.33% 9.33%      
Total first lien senior secured loans [3],[4] $ 10.3   $ 10.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 9.9   9.9                
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class A redeemable shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.8 [4],[5]   1.8 [4],[5]   1.5 [7],[8]            
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class B redeemable shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.8 [4],[5]   1.8 [4],[5]   1.5 [7],[8]            
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class C redeemable shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.8 [4],[5]   1.8 [4],[5]   1.5 [7],[8]            
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class D redeemable shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.8 [4],[5]   1.8 [4],[5]   1.5 [7],[8]            
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class E redeemable shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.8 [4],[5]   1.8 [4],[5]   1.5 [7],[8]            
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class F redeemable shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.8 [4],[5]   1.8 [4],[5]   1.5 [7],[8]            
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class G redeemable shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.8 [4],[5]   1.8 [4],[5]   1.5 [7],[8]            
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class H redeemable shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.8 [4],[5]   1.8 [4],[5]   1.5 [7],[8]            
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Class I redeemable shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.8 [4],[5]   $ 1.8 [4],[5]   $ 1.5 [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% [2]   3.75% [2]   3.88% [1] 3.75% [2] 3.75% [2] 3.75% [2] 3.88% [1] 3.88% [1] 3.88% [1]
Total first lien senior secured loans $ 60.5 [4],[5]   $ 60.5 [4],[5]   $ 70.2 [7],[8]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 60.5 [4],[5]   60.5 [4],[5]   70.3 [7],[8]            
Investment, Identifier [Axis]: Storm Investment S.a.r.l., Ordinary shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [4],[5]   0.0 [4],[5]   0.0 [7],[8]            
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 30.4   30.4   26.8            
Less: funded commitments (1.2)   (1.2)   0.0            
Total unfunded commitments 29.2   29.2   26.8            
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 commitments 29.2   29.2   26.8            
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 9.3 [4]   $ 9.3 [4]   $ 9.2 [7]            
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.57% [2]   8.57% [2]   6.50% [1] 8.57% [2] 8.57% [2] 8.57% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 43.3 [3],[4]   $ 43.3 [3],[4]   $ 17.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 42.0 [3],[4]   $ 42.0 [3],[4]   $ 17.2 [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 8.56% [2]   8.56% [2]   6.50% [1] 8.56% [2] 8.56% [2] 8.56% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 15.3 [3],[4]   $ 15.3 [3],[4]   $ 74.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 14.9 [3],[4]   $ 14.9 [3],[4]   73.7 [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 [2] 11.00%   11.00%     11.00% 11.00% 11.00%      
Total first lien senior secured loans [3],[4],[13] $ 1.0   $ 1.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[13] 1.0   1.0                
Investment, Identifier [Axis]: Sundance Energy Inc.                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     0.0   0.0            
Redemptions (cost)     40.9   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):     (22.6)   0.0            
Net unrealized gains (losses):     1.2   (1.1)            
Total investments at fair value 0.0   0.0   68.6            
Investment, Identifier [Axis]: Sundance Energy Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         68.6            
Investment, Identifier [Axis]: Sundance Group Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.6   7.6   7.6            
Less: funded commitments (2.0)   (2.0)   (0.9)            
Total unfunded commitments 5.6   5.6   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 commitments $ 5.6   $ 5.6   $ 6.7            
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.54% [2]   8.54% [2]   7.75% [1] 8.54% [2] 8.54% [2] 8.54% [2] 7.75% [1] 7.75% [1] 7.75% [1]
Total first lien senior secured loans $ 15.4 [3],[4]   $ 15.4 [3],[4]   $ 15.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 15.3 [3],[4]   $ 15.3 [3],[4]   $ 15.3 [6],[7]            
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.40% [2]   9.40% [2]   7.75% [1] 9.40% [2] 9.40% [2] 9.40% [2] 7.75% [1] 7.75% [1] 7.75% [1]
Total first lien senior secured loans $ 2.0 [3],[4]   $ 2.0 [3],[4]   $ 0.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 2.0 [3],[4]   2.0 [3],[4]   0.9 [6],[7]            
Investment, Identifier [Axis]: Sunk Rock Foundry Partners LP, Hatteras Electrical Manufacturing Holding Company and Sigma Electric Manufacturing Corporation, Diecast Beacon | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.5   7.5   7.5            
Less: funded commitments (0.6)   (0.6)   (0.6)            
Total unfunded commitments 6.9   6.9   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 commitments 6.9   6.9   $ 6.9            
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]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0 [15]   $ 0.0 [15]   $ 0.0 [16]            
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% [2]   3.61% [2]   3.61% [1] 3.61% [2] 3.61% [2] 3.61% [2] 3.61% [1] 3.61% [1] 3.61% [1]
Total first lien senior secured loans $ 0.1 [4]   $ 0.1 [4]   $ 0.1 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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 | Rate 9.53% [2]   9.53% [2]   8.75% [1] 9.53% [2] 9.53% [2] 9.53% [2] 8.75% [1] 8.75% [1] 8.75% [1]
Total first lien senior secured loans $ 146.3 [3],[4]   $ 146.3 [3],[4]   $ 142.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 136.1 [3],[4]   136.1 [3],[4]   $ 142.5 [6],[7]            
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 75.0   75.0                
Less: funded commitments (74.7)   (74.7)                
Total unfunded commitments 0.3   0.3                
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 commitments $ 0.3   $ 0.3                
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC, Senior subordinated revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 6.29%   6.29%     6.29% 6.29% 6.29%      
Total first lien senior secured loans [4],[5] $ 44.9   $ 44.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] $ 44.9   $ 44.9                
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC, Senior subordinated revolving loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.66%   10.66%     10.66% 10.66% 10.66%      
Total first lien senior secured loans [4],[5] $ 29.8   $ 29.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] $ 29.8   $ 29.8                
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% [2]   3.98% [2]   3.98% [1] 3.98% [2] 3.98% [2] 3.98% [2] 3.98% [1] 3.98% [1] 3.98% [1]
Total first lien senior secured loans $ 0.4 [4]   $ 0.4 [4]   $ 0.4 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.3 [4]   $ 0.3 [4]   $ 0.4 [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 | Rate 10.43% [2]   10.43% [2]   8.75% [1] 10.43% [2] 10.43% [2] 10.43% [2] 8.75% [1] 8.75% [1] 8.75% [1]
Total first lien senior secured loans $ 71.3 [3],[4]   $ 71.3 [3],[4]   $ 69.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value         69.3            
Investment, Identifier [Axis]: Sunrun Xanadu Issuer 2019-1, LLC and gSunrun Xanadu Holdings 2019-1, LLC, Senior subordinated loan                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 67.1   67.1                
Investment, Identifier [Axis]: Sunshine Sub, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         5.8            
Less: funded commitments         0.0            
Total unfunded commitments         5.8            
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 commitments         5.8            
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.0   7.0   7.0            
Less: funded commitments (3.0)   (3.0)   0.0            
Total unfunded commitments 4.0   4.0   7.0            
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 commitments $ 4.0   $ 4.0   $ 7.0            
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.63%   7.63%     7.63% 7.63% 7.63%      
Total first lien senior secured loans [3],[4] $ 12.4   $ 12.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 11.8   $ 11.8                
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] 9.00%   9.00%     9.00% 9.00% 9.00%      
Total first lien senior secured loans [4] $ 3.0   $ 3.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 2.9   $ 2.9                
Investment, Identifier [Axis]: Symplr Software Inc. and Symplr Software Intermediate Holdings, Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.93% [2]   9.93% [2]   8.63% [1] 9.93% [2] 9.93% [2] 9.93% [2] 8.63% [1] 8.63% [1] 8.63% [1]
Total first lien senior secured loans $ 76.2 [3],[4]   $ 76.2 [3],[4]   $ 69.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 72.4 [3],[4]   72.4 [3],[4]   69.9 [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]                      
Total investments at fair value 84.0 [4]   84.0 [4]   85.0 [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]                      
Total investments at fair value 42.0 [4]   42.0 [4]   42.6 [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]                      
Total investments at fair value 16.4 [4]   16.4 [4]   16.6 [7]            
Investment, Identifier [Axis]: Synergy HomeCare Franchising, LLC and NP/Synergy Holdings, LLC | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value $ 0.9   $ 0.9   $ 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 9.42% [2]   9.42% [2]   6.75% [1] 9.42% [2] 9.42% [2] 9.42% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 13.1 [3],[4]   $ 13.1 [3],[4]   $ 15.3 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 13.1 [3],[4]   13.1 [3],[4]   15.3 [6]            
Investment, Identifier [Axis]: TA/WEG Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.0   2.0   9.3            
Less: funded commitments 0.0   0.0   (0.8)            
Total unfunded commitments 2.0   2.0   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 commitments $ 2.0   $ 2.0   $ 8.5            
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.75%       6.75% 6.75% 6.75%
Total first lien senior secured loans [6],[7]         $ 0.1            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 0.1            
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.45%   8.45%     8.45% 8.45% 8.45%      
Total first lien senior secured loans [3],[4] $ 1.6   $ 1.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 1.6   $ 1.6                
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.02% [2]   8.02% [2]   6.75% [1] 8.02% [2] 8.02% [2] 8.02% [2] 6.75% [1] 6.75% [1] 6.75% [1]
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]                      
Total investments at fair value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]            
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.31% [2]   9.31% [2]   6.75% [1] 9.31% [2] 9.31% [2] 9.31% [2] 6.75% [1] 6.75% [1] 6.75% [1]
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]                      
Total investments at fair value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 0.1 [6],[7]            
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.57% [2]   7.57% [2]   6.75% [1] 7.57% [2] 7.57% [2] 7.57% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 8.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   $ 8.3 [6],[7]            
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.75%       6.75% 6.75% 6.75%
Total first lien senior secured loans [6],[7],[14]         $ 0.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   0.8 [6],[7],[14]            
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.3   0.3   5.3            
Less: funded commitments (0.1)   (0.1)   0.0            
Total unfunded commitments 0.2   0.2   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 commitments $ 0.2   $ 0.2   $ 5.3            
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6]         $ 6.6            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 6.6            
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, 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 [3],[4] $ 34.6   $ 34.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 34.2   $ 34.2                
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.17% [2]   9.17% [2]   6.50% [1] 9.17% [2] 9.17% [2] 9.17% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 6.5 [3],[4]   $ 6.5 [3],[4]   $ 4.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 6.5 [3],[4]   $ 6.5 [3],[4]   $ 4.0 [6],[7]            
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6]         $ 34.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         34.8            
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.09%   8.09%     8.09% 8.09% 8.09%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.1   0.1                
Investment, Identifier [Axis]: THG Acquisition, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 28.8   28.8   34.8            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 28.8   28.8   34.8            
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 commitments $ 28.8   $ 28.8   $ 34.8            
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.87% [2]   8.87% [2]   6.25% [1] 8.87% [2] 8.87% [2] 8.87% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 14.9 [3],[4]   $ 14.9 [3],[4]   $ 0.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 14.9 [3],[4]   $ 14.9 [3],[4]   $ 0.6 [6],[7]            
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.62% [2]   8.62% [2]   6.75% [1] 8.62% [2] 8.62% [2] 8.62% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 6.5 [3],[4]   $ 6.5 [3],[4]   $ 0.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 6.5 [3],[4]   $ 6.5 [3],[4]   $ 0.1 [6],[7]            
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.87% [2]   8.87% [2]   6.50% [1] 8.87% [2] 8.87% [2] 8.87% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 23.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   $ 23.2 [6],[7]            
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6]         $ 14.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 14.9            
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 7.5   7.5                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 7.5   7.5                
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 commitments 7.5   7.5                
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]                      
Total investments at fair value $ 5.4   $ 5.4                
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] 9.23%   9.23%     9.23% 9.23% 9.23%      
Total first lien senior secured loans [3] $ 35.2   $ 35.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] 34.9   34.9                
Investment, Identifier [Axis]: Taymax Group, L.P., Taymax Group G.P., LLC, PF Salem Canada ULC and TCP Fit Parent, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 1.7   1.7   1.9            
Less: funded commitments (0.8)   (0.8)   (0.5)            
Total unfunded commitments 0.9   0.9   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   (0.3)            
Total net adjusted unfunded revolving and delayed draw commitments 0.9   0.9   1.1            
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]                      
Total investments at fair value $ 3.4   $ 3.4   $ 2.0            
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 loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.92% [2]   8.92% [2]   6.25% [1] 8.92% [2] 8.92% [2] 8.92% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 1.4 [3],[4]   $ 1.4 [3],[4]   $ 1.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 1.4 [3],[4]   $ 1.4 [3],[4]   $ 1.1 [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                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.92% [2]   8.92% [2]   6.75% [1] 8.92% [2] 8.92% [2] 8.92% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.8 [3],[4]   $ 0.8 [3],[4]   $ 0.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.8 [3],[4]   $ 0.8 [3],[4]   $ 0.5 [6],[7]            
Investment, Identifier [Axis]: Teasdale Foods, Inc. and Familia Group Holdings Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.88% [2]   9.88% [2]   8.00% [1] 9.88% [2] 9.88% [2] 9.88% [2] 8.00% [1] 8.00% [1] 8.00% [1]
Total first lien senior secured loans $ 75.8 [3],[4]   $ 75.8 [3],[4]   $ 78.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 65.1 [3],[4]   65.1 [3],[4]   73.6 [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]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Teasdale Foods, Inc. and Familia Group Holdings Inc., Warrant to purchase up to 57,827 shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0   $ 0.0                
Investment, Identifier [Axis]: Teligent, Inc, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [7],[10]         8.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[10]         8.8            
Investment, Identifier [Axis]: Teligent, Inc, Second lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [7],[10]         1.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[10]         0.5            
Investment, Identifier [Axis]: Teligent, Inc, Second lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans [7],[10]         77.8            
Participating interest sold         0.6            
Secured borrowings         0.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7],[10]         $ 29.5            
Investment, Identifier [Axis]: Teligent, Inc, Second lien senior secured loan 3, Secured borrowing                      
Schedule of Investments [Line Items]                      
Coupon | Rate         14.50%       14.50% 14.50% 14.50%
Investment, Identifier [Axis]: Teligent, Inc, Series D preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         $ 0.0            
Investment, Identifier [Axis]: Teligent, Inc, Warrant to purchase shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Teligent, Inc, Warrant to purchase shares of common stock 2                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Teligent, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         3.4            
Less: funded commitments         0.0            
Total unfunded commitments         3.4            
Less: commitments substantially at discretion of the Company         0.0            
Less: unavailable commitments due to borrowing base or other covenant restrictions         (3.4)            
Total net adjusted unfunded revolving and delayed draw commitments         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 [3],[4] $ 71.4   $ 71.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 69.6   69.6                
Investment, Identifier [Axis]: TerSera Therapeutics LLC | Revolving and delayed draw loan commitments                      
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 commitments $ 0.1   $ 0.1   $ 0.1            
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.27% [2]   9.27% [2]   6.60% [1] 9.27% [2] 9.27% [2] 9.27% [2] 6.60% [1] 6.60% [1] 6.60% [1]
Total first lien senior secured loans $ 5.0 [3],[4]   $ 5.0 [3],[4]   $ 5.1 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 5.0 [3],[4]   $ 5.0 [3],[4]   $ 5.1 [6]            
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.85% [2]   7.85% [2]   6.60% [1] 7.85% [2] 7.85% [2] 7.85% [2] 6.60% [1] 6.60% [1] 6.60% [1]
Total first lien senior secured loans $ 2.1 [3],[4]   $ 2.1 [3],[4]   $ 2.1 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.1 [3],[4]   $ 2.1 [3],[4]   $ 2.1 [6]            
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.27% [2]   9.27% [2]   6.60% [1] 9.27% [2] 9.27% [2] 9.27% [2] 6.60% [1] 6.60% [1] 6.60% [1]
Total first lien senior secured loans $ 1.8 [3],[4]   $ 1.8 [3],[4]   $ 1.8 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 1.8 [3],[4]   1.8 [3],[4]   $ 1.8 [6]            
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [16]         $ 0.0            
Investment, Identifier [Axis]: The Alaska Club Partners, LLC, Athletic Club Partners LLC and The Alaska Club, Inc. | Revolving and delayed draw loan commitments                      
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 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 | Rate 12.75% [2]   12.75% [2]   10.25% [1] 12.75% [2] 12.75% [2] 12.75% [2] 10.25% [1] 10.25% [1] 10.25% [1]
Total first lien senior secured loans $ 12.6 [3],[4]   $ 12.6 [3],[4]   $ 15.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 12.6 [3],[4]   12.6 [3],[4]   14.1 [6],[7]            
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 12.6   12.6   29.5            
Less: funded commitments (10.1)   (10.1)   (2.0)            
Total unfunded commitments 2.5   2.5   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 commitments 2.5   2.5   27.5            
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 8.3   $ 8.3   $ 4.9            
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.49% [2]   8.49% [2]   6.75% [1] 8.49% [2] 8.49% [2] 8.49% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 28.9 [3],[4]   $ 28.9 [3],[4]   $ 47.2 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 28.6 [3],[4]   $ 28.6 [3],[4]   $ 46.7 [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 [2] 9.57%   9.57%     9.57% 9.57% 9.57%      
Total first lien senior secured loans [3],[4] $ 11.5   $ 11.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 11.4   $ 11.4                
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.25% [2]   11.25% [2]   8.25% [1] 11.25% [2] 11.25% [2] 11.25% [2] 8.25% [1] 8.25% [1] 8.25% [1]
Total first lien senior secured loans $ 5.4 [3],[4]   $ 5.4 [3],[4]   $ 2.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 5.4 [3],[4]   $ 5.4 [3],[4]   2.0 [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 [2] 9.15%   9.15%     9.15% 9.15% 9.15%      
Total first lien senior secured loans [3],[4] $ 4.6   $ 4.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 4.6   $ 4.6                
Investment, Identifier [Axis]: The Edelman Financial Center, LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.87%   9.87%     9.87% 9.87% 9.87%      
Total first lien senior secured loans [4],[5] $ 5.4   $ 5.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] 4.8   4.8                
Investment, Identifier [Axis]: The Mather Group, LLC, TVG-TMG Topco, Inc., and TVG-TMG Holdings, LLC | Revolving and delayed draw loan commitments                      
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 commitments 1.9   1.9                
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]                      
Total investments at fair value [5] $ 0.0   $ 0.0                
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] 8.41%   8.41%     8.41% 8.41% 8.41%      
Total first lien senior secured loans [3],[4],[5] $ 3.3   $ 3.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] 3.3   3.3                
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 [4],[5] 2.9   2.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[5] 2.8   2.8                
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]                      
Total investments at fair value [4],[5] 7.2   7.2                
Investment, Identifier [Axis]: The NPD Group, L.P., IRI Group Holdings, Inc., Information Resources, Inc. and IRI-NPD Co-Invest Aggregator, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 14.4   14.4                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 14.4   14.4                
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 commitments 14.4   14.4                
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]                      
Total investments at fair value [4] $ 11.3   $ 11.3                
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 | Rate [2] 8.76%   8.76%     8.76% 8.76% 8.76%      
Total first lien senior secured loans [3],[4] $ 212.0   $ 212.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 207.7   207.7                
Investment, Identifier [Axis]: The Teaching Company Holdings, Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0   1.2 [7]            
Investment, Identifier [Axis]: The Teaching Company Holdings, Inc., Preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 3.1 [4]   3.1 [4]   2.9 [7]            
Investment, Identifier [Axis]: The Ultimate Software Group, Inc. and H&F Unite Partners, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 10.0   10.0   10.0            
Less: funded commitments (1.0)   (1.0)   (0.1)            
Total unfunded commitments 9.0   9.0   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 commitments $ 9.0   $ 9.0   $ 9.9            
Investment, Identifier [Axis]: The Ultimate Software Group, Inc. and H&F Unite Partners, L.P., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 6.87% [2]   6.87% [2]   0.00% [1] 6.87% [2] 6.87% [2] 6.87% [2] 0.00% [1] 0.00% [1] 0.00% [1]
Total first lien senior secured loans [4],[5],[13] $ 0.9   $ 0.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.9 [4],[5],[13]   0.9 [4],[5],[13]   $ 0.0 [8],[16]            
Investment, Identifier [Axis]: The Ultimate Software Group, Inc. and H&F Unite Partners, L.P., Limited partnership interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 13.5 [4],[5]   13.5 [4],[5]   15.1 [7],[8]            
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 6.9   6.9   6.9            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 6.9   6.9   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 commitments 6.9   6.9   6.9            
Investment, Identifier [Axis]: The Ultimus Group Midco, LLC, The Ultimus Group, LLC, and The Ultimus Group Aggregator, LP, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 2.4   2.4   1.9            
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]                      
Total investments at 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                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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]                      
Total investments at 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 8.17% [2]   8.17% [2]   5.75% [1] 8.17% [2] 8.17% [2] 8.17% [2] 5.75% [1] 5.75% [1] 5.75% [1]
Total first lien senior secured loans $ 37.5 [3],[4]   $ 37.5 [3],[4]   $ 37.8 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 37.1 [3],[4]   37.1 [3],[4]   37.8 [6]            
Investment, Identifier [Axis]: Therapy Brands Holdings LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 8.6   8.6   8.6            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 8.6   8.6   8.6            
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 commitments $ 8.6   $ 8.6   $ 8.6            
Investment, Identifier [Axis]: Therapy Brands Holdings LLC, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.74% [2]   9.74% [2]   7.50% [1] 9.74% [2] 9.74% [2] 9.74% [2] 7.50% [1] 7.50% [1] 7.50% [1]
Total first lien senior secured loans $ 20.5 [3],[4]   $ 20.5 [3],[4]   $ 20.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 19.4 [3],[4]   19.4 [3],[4]   20.5 [6],[7]            
Investment, Identifier [Axis]: Thermostat Purchaser III, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 11.7   11.7   11.7            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 11.7   11.7   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 commitments $ 11.7   $ 11.7   $ 11.7            
Investment, Identifier [Axis]: Thermostat Purchaser III, Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.32% [2]   10.32% [2]   8.00% [1] 10.32% [2] 10.32% [2] 10.32% [2] 8.00% [1] 8.00% [1] 8.00% [1]
Total first lien senior secured loans $ 23.0 [3],[4]   $ 23.0 [3],[4]   $ 23.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 21.8 [3],[4]   21.8 [3],[4]   22.8 [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. | Revolving and delayed draw loan commitments                      
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 commitments $ 19.0   $ 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] 8.05%   8.05%     8.05% 8.05% 8.05%      
Total first lien senior secured loans [3],[4],[11] $ 10.9   $ 10.9                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[11] 9.7   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., Limited partnership interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] $ 10.9   $ 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., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 12.05%   12.05%     12.05% 12.05% 12.05%      
Total first lien senior secured loans [3],[4] $ 85.3   $ 85.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 70.8   $ 70.8                
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Senior secured notes                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 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]                      
Total investments at fair value [4],[11] 75.0   75.0                
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]                      
Total investments at fair value [4] 134.8   134.8                
Investment, Identifier [Axis]: Top Five Largest Portfolio Company Investments | Senior Direct Lending Program                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans 1,616.0   1,616.0   1,540.0            
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):     (0.6)   (1.5)            
Total investments at fair value 3.3   3.3   3.9            
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.0   $ 0.0   $ 0.4 [7]            
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.12% [2]   9.12% [2]   7.00% [1] 9.12% [2] 9.12% [2] 9.12% [2] 7.00% [1] 7.00% [1] 7.00% [1]
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]                      
Total investments at fair value $ 1.8 [3],[4]   $ 1.8 [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 7.12% [2]   7.12% [2]   5.00% [1] 7.12% [2] 7.12% [2] 7.12% [2] 5.00% [1] 5.00% [1] 5.00% [1]
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]                      
Total investments at fair value 1.5 [3],[4]   1.5 [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]                      
Total investments at fair value $ 2.1 [4]   $ 2.1 [4]   $ 2.8 [7]            
Investment, Identifier [Axis]: Triton Water Holdings, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.17% [2]   7.17% [2]   4.00% [1] 7.17% [2] 7.17% [2] 7.17% [2] 4.00% [1] 4.00% [1] 4.00% [1]
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]                      
Total investments at fair value $ 0.9 [3],[4],[11]   $ 0.9 [3],[4],[11]   $ 1.0 [6],[7],[12]            
Investment, Identifier [Axis]: Triton Water Holdings, Inc., Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 6.25% [2]   6.25% [2]   6.25% [1] 6.25% [2] 6.25% [2] 6.25% [2] 6.25% [1] 6.25% [1] 6.25% [1]
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]                      
Total investments at fair value 0.1 [4],[11]   0.1 [4],[11]   0.1 [7],[12]            
Investment, Identifier [Axis]: Two Six Labs, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 10.3   10.3                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 10.3   10.3                
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 commitments 10.3   10.3                
Investment, Identifier [Axis]: Tyden Group Holding Corp., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [8]         3.9            
Investment, Identifier [Axis]: Tyden Group Holding Corp., Preferred stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [8]         0.4            
Investment, Identifier [Axis]: U.S. Anesthesia Partners, Inc. & U.S. Anesthesia Partners Holdings, Inc., Common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 14.4 [4]   $ 14.4 [4]   $ 12.9 [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 10.06% [2]   10.06% [2]   8.00% [1] 10.06% [2] 10.06% [2] 10.06% [2] 8.00% [1] 8.00% [1] 8.00% [1]
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]                      
Total investments at fair value 143.3 [3],[4]   143.3 [3],[4]   146.3 [6],[7]            
Investment, Identifier [Axis]: US Salt Investors, LLC and Emerald Lake Pearl Acquisition-A, L.P. | Revolving and delayed draw loan commitments                      
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 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 9.17% [2]   9.17% [2]   6.25% [1] 9.17% [2] 9.17% [2] 9.17% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 26.4 [3],[4]   $ 26.4 [3],[4]   $ 40.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 25.4 [3],[4]   25.4 [3],[4]   39.7 [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]                      
Total investments at fair value 0.5 [4]   0.5 [4]   0.8 [7]            
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 18.4   18.4   8.4            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 18.4   18.4   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 commitments $ 18.4   $ 18.4   8.4            
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.07%   8.07%     8.07% 8.07% 8.07%      
Total first lien senior secured loans [3],[4] $ 1.0   $ 1.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 1.0   1.0                
Investment, Identifier [Axis]: VCP-EDC Co-Invest, LLC, Membership units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 3.5   3.5   0.4            
Investment, Identifier [Axis]: VLS Recovery Services, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         23.8            
Less: funded commitments         (1.5)            
Total unfunded commitments         22.3            
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 commitments         $ 22.3            
Investment, Identifier [Axis]: VLS Recovery Services, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6],[7]         $ 8.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 8.8            
Investment, Identifier [Axis]: VLS Recovery Services, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6],[7]         $ 5.2            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 5.2            
Investment, Identifier [Axis]: VLS Recovery Services, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         6.50%       6.50% 6.50% 6.50%
Total first lien senior secured loans [6],[7],[14]         $ 1.3            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7],[14]         1.3            
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 11.7   11.7   6.2            
Less: funded commitments (0.2)   (0.2)   0.0            
Total unfunded commitments 11.5   11.5   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 commitments 11.5   11.5   6.2            
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., Class A-2 units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 7.4 [4]   $ 7.4 [4]   $ 7.5 [7]            
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.13% [2]   9.13% [2]   6.75% [1] 9.13% [2] 9.13% [2] 9.13% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 3.3 [3],[4]   $ 3.3 [3],[4]   $ 6.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 3.3 [3],[4]   $ 3.3 [3],[4]   6.4 [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 [2] 9.37%   9.37%     9.37% 9.37% 9.37%      
Total first lien senior secured loans [3],[4] $ 2.5   $ 2.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 2.5   $ 2.5                
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.57%   8.57%     8.57% 8.57% 8.57%      
Total first lien senior secured loans [3] $ 0.5   $ 0.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] $ 0.5   $ 0.5                
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 11.50%   11.50%     11.50% 11.50% 11.50%      
Total first lien senior secured loans [3],[13] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[13] 0.1   0.1                
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC                      
Investments Activity And Fair Value Table [Abstract]                      
Purchases (cost)     6.0   0.9            
Redemptions (cost)     4.5   0.0            
Sales (cost)     0.0   0.0            
Interest income     3.6   4.0            
Capital structuring service fees     0.2   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):     24.4   5.4            
Total investments at fair value 107.0   107.0   77.5            
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         7.1            
Less: funded commitments         0.0            
Total unfunded commitments         7.1            
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 commitments         7.1            
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 64.3 [4]   64.3 [4]   39.9 [7]            
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans 27.3 [3],[4]   27.3 [3],[4]   7.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 27.3 [3],[4]   27.3 [3],[4]   7.0 [6],[7]            
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 9.4 [3],[4]   9.4 [3],[4]   5.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 9.4 [3],[4]   9.4 [3],[4]   5.5 [6],[7]            
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 6.0 [3],[4]   6.0 [3],[4]   25.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 6.0 [3],[4]   6.0 [3],[4]   25.1 [6],[7]            
Investment, Identifier [Axis]: VRC Companies, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 5.4   5.4                
Less: funded commitments (0.8)   (0.8)                
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 commitments $ 4.6   $ 4.6                
Investment, Identifier [Axis]: VRC Companies, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.42%   8.42%     8.42% 8.42% 8.42%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.1   $ 0.1                
Investment, Identifier [Axis]: VRC Companies, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.75%   10.75%     10.75% 10.75% 10.75%      
Total first lien senior secured loans [3] $ 0.8   $ 0.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3] $ 0.8   $ 0.8                
Investment, Identifier [Axis]: VRC Companies, LLC, Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 12.00%   12.00%     12.00% 12.00% 12.00%      
Total first lien senior secured loans [4] $ 5.0   $ 5.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4] 5.0   5.0                
Investment, Identifier [Axis]: VS Buyer, LLC | Revolving and delayed draw loan commitments                      
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 commitments 8.1   8.1   8.1            
Investment, Identifier [Axis]: VSC Investors LLC, Membership interest                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.5 [4],[5],[11]   0.5 [4],[5],[11]   0.6 [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]                      
Total investments at fair value $ 1.1 [4]   $ 1.1 [4]   $ 0.7 [7]            
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] 6.62%   6.62%     6.62% 6.62% 6.62%      
Total first lien senior secured loans [3],[4],[11] $ 9.7   $ 9.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[11] $ 9.0   $ 9.0                
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 11.37% [2]   11.37% [2]   9.25% [1] 11.37% [2] 11.37% [2] 11.37% [2] 9.25% [1] 9.25% [1] 9.25% [1]
Total first lien senior secured loans $ 122.7 [3],[4]   $ 122.7 [3],[4]   $ 21.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 121.5 [3],[4]   $ 121.5 [3],[4]   $ 20.3 [6],[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]                      
Coupon | Rate 11.37% [2]   11.37% [2]   9.25% [1] 11.37% [2] 11.37% [2] 11.37% [2] 9.25% [1] 9.25% [1] 9.25% [1]
Total first lien senior secured loans $ 21.1 [3],[4]   $ 21.1 [3],[4]   $ 122.7 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 20.9 [3],[4]   20.9 [3],[4]   117.9 [6]            
Investment, Identifier [Axis]: Verista, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 8.2   8.2                
Less: funded commitments (1.1)   (1.1)                
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 commitments $ 7.1   $ 7.1                
Investment, Identifier [Axis]: Verista, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.74%   8.74%     8.74% 8.74% 8.74%      
Total first lien senior secured loans [3],[4] $ 0.8   $ 0.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.8   $ 0.8                
Investment, Identifier [Axis]: Verista, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.24%   9.24%     9.24% 9.24% 9.24%      
Total first lien senior secured loans [3],[4] $ 1.1   $ 1.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 1.1   1.1                
Investment, Identifier [Axis]: Verscend Holding Corp. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 22.5   22.5   22.5            
Less: funded commitments 0.0   0.0   (0.1)            
Total unfunded commitments 22.5   22.5   22.4            
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 commitments 22.5   22.5   $ 22.4            
Investment, Identifier [Axis]: Verscend Holding Corp., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: Vertice Pharma UK Parent Limited, Preferred shares                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at 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 [2] 6.87%   6.87%     6.87% 6.87% 6.87%      
Total first lien senior secured loans [4],[11] $ 0.3   $ 0.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [4],[11] $ 0.3   $ 0.3                
Investment, Identifier [Axis]: Visual Edge Technology, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.07% [2]   10.07% [2]   9.75% [1] 10.07% [2] 10.07% [2] 10.07% [2] 9.75% [1] 9.75% [1] 9.75% [1]
Total first lien senior secured loans $ 32.6 [3],[4]   $ 32.6 [3],[4]   $ 32.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 30.0 [3],[4]   30.0 [3],[4]   30.9 [6],[7]            
Investment, Identifier [Axis]: Visual Edge Technology, Inc., Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Total first lien senior secured loans 99.8 [4],[9]   99.8 [4],[9]   88.6 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 62.4 [4],[9]   62.4 [4],[9]   79.7 [7]            
Investment, Identifier [Axis]: Visual Edge Technology, Inc., Warrant to purchase shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [7]         0.0            
Investment, Identifier [Axis]: Visual Edge Technology, Inc., Warrant to purchase up to 10,358,572 shares of common stock                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0   0.0                
Investment, Identifier [Axis]: WA Asset Management, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.8   0.8                
Less: funded commitments 0.0   0.0                
Total unfunded commitments 0.8   0.8                
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 commitments $ 0.8   $ 0.8                
Investment, Identifier [Axis]: WA Asset Management, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.20%   9.20%     9.20% 9.20% 9.20%      
Total first lien senior secured loans [3],[4],[5] $ 4.0   $ 4.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[5] 4.0   4.0                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments         10.3            
Less: funded commitments         (1.5)            
Total unfunded commitments         8.8            
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 commitments         $ 8.8            
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 35.4   35.4                
Less: funded commitments (5.2)   (5.2)                
Total unfunded commitments 30.2   30.2                
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 commitments 30.2   30.2                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, Common units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.8   $ 4.8                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 9.95%   9.95%     9.95% 9.95% 9.95%      
Total first lien senior secured loans [3],[4] $ 33.2   $ 33.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 32.8   $ 32.8                
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 [2] 9.95%   9.95%     9.95% 9.95% 9.95%      
Total first lien senior secured loans [3],[4] $ 14.6   $ 14.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 14.4   $ 14.4                
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 [2] 9.95%   9.95%     9.95% 9.95% 9.95%      
Total first lien senior secured loans [3],[4] $ 10.7   $ 10.7                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 10.6   $ 10.6                
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 [2] 9.95%   9.95%     9.95% 9.95% 9.95%      
Total first lien senior secured loans [3],[4] $ 11.3   $ 11.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 11.2   $ 11.2                
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 [2] 9.95%   9.95%     9.95% 9.95% 9.95%      
Total first lien senior secured loans [3],[4] $ 4.5   $ 4.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 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]                      
Coupon | Rate [2] 9.80%   9.80%     9.80% 9.80% 9.80%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.1   $ 0.1                
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 [2] 9.80%   9.80%     9.80% 9.80% 9.80%      
Total first lien senior secured loans [3],[4] $ 0.1   $ 0.1                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 0.1   $ 0.1                
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 [2] 9.55%   9.55%     9.55% 9.55% 9.55%      
Total first lien senior secured loans [3],[4],[13] $ 4.5   $ 4.5                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4],[13] $ 4.4   $ 4.4                
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 4.9            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 4.9            
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6]         $ 33.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 33.4            
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6]         $ 4.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 4.5            
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6]         $ 11.4            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 11.4            
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 5                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6]         $ 10.8            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 10.8            
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 6                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 9.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 9.0            
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         7.00%       7.00% 7.00% 7.00%
Total first lien senior secured loans [6],[7]         $ 1.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 1.5            
Investment, Identifier [Axis]: Walnut Parent, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.56% [2]   8.56% [2]   6.50% [1] 8.56% [2] 8.56% [2] 8.56% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 14.7 [3],[4]   $ 14.7 [3],[4]   $ 14.9 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 14.5 [3],[4]   $ 14.5 [3],[4]   $ 14.9 [6]            
Investment, Identifier [Axis]: Walnut Parent, Inc., First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.56% [2]   8.56% [2]   6.50% [1] 8.56% [2] 8.56% [2] 8.56% [2] 6.50% [1] 6.50% [1] 6.50% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 19.9 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 19.9 [6],[7]            
Investment, Identifier [Axis]: Wand Newco 3, Inc., Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.37% [2]   10.37% [2]   7.43% [1] 10.37% [2] 10.37% [2] 10.37% [2] 7.43% [1] 7.43% [1] 7.43% [1]
Total first lien senior secured loans $ 182.6 [4]   $ 182.6 [4]   $ 180.2 [7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 178.9 [4]   $ 178.9 [4]   $ 180.2 [7]            
Investment, Identifier [Axis]: Wash Encore Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.78% [2]   8.78% [2]   6.75% [1] 8.78% [2] 8.78% [2] 8.78% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 134.6 [3],[4]   $ 134.6 [3],[4]   $ 135.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 131.9 [3],[4]   131.9 [3],[4]   134.2 [6],[7]            
Investment, Identifier [Axis]: Watchfire Enterprises, Inc. | Revolving and delayed draw loan commitments                      
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 commitments         2.0            
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC | Revolving and delayed draw loan commitments                      
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 commitments 1.9   1.9   1.9            
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 2.9   $ 2.9   $ 2.7            
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.17% [2]   9.17% [2]   6.25% [1] 9.17% [2] 9.17% [2] 9.17% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 19.3 [3],[4]   $ 19.3 [3],[4]   $ 19.4 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 19.3 [3],[4]   19.3 [3],[4]   $ 19.4 [6]            
Investment, Identifier [Axis]: Watermill Express, LLC and Watermill Express Holdings, LLC, First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         0.00%       0.00% 0.00% 0.00%
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.0 [15]   0.0 [15]   $ 0.0 [16]            
Investment, Identifier [Axis]: WebPT, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 0.9   0.9   0.1            
Less: funded commitments (0.2)   (0.2)   0.0            
Total unfunded commitments 0.7   0.7   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 commitments $ 0.7   $ 0.7   $ 0.1            
Investment, Identifier [Axis]: WebPT, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.82% [2]   9.82% [2]   7.75% [1] 9.82% [2] 9.82% [2] 9.82% [2] 7.75% [1] 7.75% [1] 7.75% [1]
Total first lien senior secured loans $ 48.1 [3],[4]   $ 48.1 [3],[4]   $ 48.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 48.1 [3],[4]   $ 48.1 [3],[4]   48.1 [6],[7]            
Investment, Identifier [Axis]: WebPT, Inc., First lien senior secured revolving loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.38%   8.38%     8.38% 8.38% 8.38%      
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.2   0.2                
Investment, Identifier [Axis]: Wellness AcquisitionCo, Inc. | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 3.9   3.9   0.1            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 3.9   3.9   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 commitments $ 3.9   $ 3.9   $ 0.1            
Investment, Identifier [Axis]: Wellness AcquisitionCo, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.62% [2]   8.62% [2]   6.50% [1] 8.62% [2] 8.62% [2] 8.62% [2] 6.50% [1] 6.50% [1] 6.50% [1]
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]                      
Total investments at fair value 0.1 [3],[4]   0.1 [3],[4]   0.1 [6],[7]            
Investment, Identifier [Axis]: Wellness AcquisitionCo, Inc., First lien senior secured revolving loan                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [15] 0.0   0.0                
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 4.1   4.1   9.9            
Less: funded commitments (0.2)   (0.2)   0.0            
Total unfunded commitments 3.9   3.9   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 commitments $ 3.9   $ 3.9   $ 9.9            
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.30% [2]   9.30% [2]   6.75% [1] 9.30% [2] 9.30% [2] 9.30% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 18.0 [3],[4]   $ 18.0 [3],[4]   $ 18.2 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 18.0 [3],[4]   $ 18.0 [3],[4]   $ 18.2 [6]            
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.91% [2]   8.91% [2]   6.75% [1] 8.91% [2] 8.91% [2] 8.91% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.2 [3],[4]   $ 0.2 [3],[4]   $ 9.5 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.2 [3],[4]   $ 0.2 [3],[4]   9.5 [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 [2] 9.38%   9.38%     9.38% 9.38% 9.38%      
Total first lien senior secured loans [3],[4] $ 0.2   $ 0.2                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 0.2   0.2                
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured revolving loan                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [15] 0.0   0.0                
Investment, Identifier [Axis]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, Limited partnership interests                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 4.7 [4]   $ 4.7 [4]   $ 2.8 [7]            
Investment, Identifier [Axis]: Winebow Holdings, Inc. and The Vintner Group, Inc., First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 9.37% [2]   9.37% [2]   7.25% [1] 9.37% [2] 9.37% [2] 9.37% [2] 7.25% [1] 7.25% [1] 7.25% [1]
Total first lien senior secured loans $ 28.1 [3],[4]   $ 28.1 [3],[4]   $ 28.3 [6]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 27.8 [3],[4]   27.8 [3],[4]   28.3 [6]            
Investment, Identifier [Axis]: WorkWave Intermediate II, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 22.6   22.6   5.2            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 22.6   22.6   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 commitments $ 22.6   $ 22.6   5.2            
Investment, Identifier [Axis]: WorkWave Intermediate II, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.90%   10.90%     10.90% 10.90% 10.90%      
Total first lien senior secured loans $ 65.6 [3],[4]   $ 65.6 [3],[4]   61.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 65.6 [3],[4]   65.6 [3],[4]   61.6 [6],[7]            
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 8.9   8.9   8.9            
Less: funded commitments (0.2)   (0.2)   (1.1)            
Total unfunded commitments 8.7   8.7   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 commitments 8.7   8.7   7.8            
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, Class A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 4.5 [4]   4.5 [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]                      
Total investments at fair value $ 1.2 [4]   $ 1.2 [4]   $ 1.1 [7]            
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.87% [2]   8.87% [2]   6.75% [1] 8.87% [2] 8.87% [2] 8.87% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 37.1 [3]   $ 37.1 [3]   $ 16.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 36.7 [3]   $ 36.7 [3]   $ 16.1 [6],[7]            
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 8.87% [2]   8.87% [2]   6.75% [1] 8.87% [2] 8.87% [2] 8.87% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 39.3 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 0.1 [3],[4]   $ 0.1 [3],[4]   $ 39.0 [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 11.00% [2]   11.00% [2]   6.75% [1] 11.00% [2] 11.00% [2] 11.00% [2] 6.75% [1] 6.75% [1] 6.75% [1]
Total first lien senior secured loans $ 0.2 [3]   $ 0.2 [3]   $ 1.1 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 0.2 [3]   0.2 [3]   1.1 [6],[7]            
Investment, Identifier [Axis]: YE Brands Holdings, LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 2.2   2.2   1.2            
Less: funded commitments 0.0   0.0   0.0            
Total unfunded commitments 2.2   2.2   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 commitments $ 2.2   $ 2.2   $ 1.2            
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate 7.96% [2]   7.96% [2]   6.25% [1] 7.96% [2] 7.96% [2] 7.96% [2] 6.25% [1] 6.25% [1] 6.25% [1]
Total first lien senior secured loans $ 8.2 [3],[4]   $ 8.2 [3],[4]   $ 8.0 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 8.1 [3],[4]   $ 8.1 [3],[4]   $ 7.9 [6],[7]            
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 8.97%   8.97%     8.97% 8.97% 8.97%      
Total first lien senior secured loans [3],[4] $ 8.0   $ 8.0                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 7.8   7.8                
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC | Revolving and delayed draw loan commitments                      
Financial Support for Nonconsolidated Legal Entity [Abstract]                      
Total commitments 21.5   21.5                
Less: funded commitments (0.1)   (0.1)                
Total unfunded commitments 21.4   21.4                
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 commitments $ 21.4   $ 21.4                
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, First lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 7.63%   7.63%     7.63% 7.63% 7.63%      
Total first lien senior secured loans [3],[4] $ 1.4   $ 1.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 1.4   1.4                
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, First lien senior secured revolving loan                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [15] 0.0   0.0                
Investment, Identifier [Axis]: ZB Holdco LLC & ZB Parent LLC, Series A units                      
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 5.3   $ 5.3                
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         9.00%       9.00% 9.00% 9.00%
Total first lien senior secured loans [6],[7]         $ 56.0            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6],[7]         $ 56.0            
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 1                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.36%   10.36%     10.36% 10.36% 10.36%      
Total first lien senior secured loans [3],[4] $ 55.8   $ 55.8                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 55.2   $ 55.2                
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 2                      
Schedule of Investments [Line Items]                      
Coupon | Rate 10.36% [2]   10.36% [2]   9.00% [1] 10.36% [2] 10.36% [2] 10.36% [2] 9.00% [1] 9.00% [1] 9.00% [1]
Total first lien senior secured loans $ 56.0 [3],[4]   $ 56.0 [3],[4]   $ 5.4 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value $ 55.4 [3],[4]   $ 55.4 [3],[4]   5.4 [6],[7]            
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 3                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.36%   10.36%     10.36% 10.36% 10.36%      
Total first lien senior secured loans [3],[4] $ 24.3   $ 24.3                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 24.1   $ 24.1                
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 4                      
Schedule of Investments [Line Items]                      
Coupon | Rate [2] 10.36%   10.36%     10.36% 10.36% 10.36%      
Total first lien senior secured loans [3],[4] $ 5.4   $ 5.4                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] 5.3   5.3                
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT | Revolving and delayed draw loan commitments                      
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 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]                      
Total investments at fair value $ 3.2 [4],[5]   $ 3.2 [4],[5]   $ 5.4 [7],[8]            
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Second lien senior secured loan                      
Schedule of Investments [Line Items]                      
Coupon | Rate [1]         8.50%       8.50% 8.50% 8.50%
Total first lien senior secured loans [6]         $ 22.5            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [6]         $ 22.4            
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 [2] 11.12%   11.12%     11.12% 11.12% 11.12%      
Total first lien senior secured loans [3],[4] $ 30.6   $ 30.6                
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value [3],[4] $ 29.1   $ 29.1                
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 11.12% [2]   11.12% [2]   8.50% [1] 11.12% [2] 11.12% [2] 11.12% [2] 8.50% [1] 8.50% [1] 8.50% [1]
Total first lien senior secured loans $ 17.2 [3],[4]   $ 17.2 [3],[4]   $ 30.6 [6],[7]            
Investments Activity And Fair Value Table [Abstract]                      
Total investments at fair value 16.3 [3],[4]   16.3 [3],[4]   30.6 [6],[7]            
Investment, Identifier [Axis]: n2y Holding, LLC | Revolving and delayed draw loan commitments                      
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 commitments $ 0.1   $ 0.1   $ 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 facility (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, 23% of the Company's total assets are represented by investments at fair value and other assets that are considered "non-qualifying assets" as of September 30, 2022.
[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 facility (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, 16% 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, 2021.
[9] Loan was on non-accrual status as of September 30, 2022.
[10] Loan was on non-accrual status as of December 31, 2021.
[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 September 30, 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.
[14] As of December 31, 2021, 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 September 30, 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 December 31, 2021, 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 $79.3 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 $79.3 secured borrowing, at fair value, included in “secured borrowings” in the accompanying consolidated balance sheet. As of September 30, 2022, the interest rate in effect for the secured borrowing was 10.06%.
[18] The Company sold a participating interest of approximately $75.0 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 $73.2 secured borrowing, at fair value, included in “secured borrowings” in the accompanying consolidated balance sheet. As of December 31, 2021, the interest rate in effect for the secured borrowing was 8.50%.
[19] As of December 31, 2021, the Company was party to subscription agreements to fund equity investments in private equity investment partnerships as follows:
(in millions)
Company		Total private equity commitmentsLess: funded private equity commitmentsTotal unfunded private equity commitmentsLess: private equity commitments substantially at the discretion of the CompanyTotal net adjusted unfunded private equity commitments
PCG-Ares Sidecar Investment, L.P. and PCG-Ares Sidecar Investment II, L.P.$50.0 $(12.5)$37.5 $(37.5)$— 
European Capital UK SME Debt LP60.9 (55.1)5.8 (5.8)— 
$110.9 $(67.6)$43.3 $(43.3)$— 
[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 interest rate of this security, the Company is entitled to receive an additional interest amount of 2.00% on $46.9 in aggregate principal amount of a “first out” tranche of the portfolio company’s senior term debt previously syndicated by the Company into “first out” and “last out” tranches, whereby the “first out” tranche will have priority as to the “last out” tranche with respect to payments of principal, interest and any other amounts due thereunder.
v3.22.2.2
CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Statement of Financial Position [Abstract]    
Amortized cost of investments $ 21,468.5 $ 19,810.0
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 700,000,000 600,000,000
Common stock, shares issued (in shares) 508,000,000 468,000,000
Common stock, shares outstanding (in shares) 508,000,000 468,000,000
v3.22.2.2
CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY (Parenthetical) - $ / shares
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Statement of Stockholders' Equity [Abstract]                  
Cash dividends declared (in usd per share) $ 0.46 $ 0.45 $ 0.45 $ 0.41 $ 0.41 $ 0.40 $ 0.40 $ 1.36 $ 1.21
v3.22.2.2
ORGANIZATION
 9 Months Ended
Sep. 30, 2022
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 (“BDC”) 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.
v3.22.2.2
SIGNIFICANT ACCOUNTING POLICIES
 9 Months Ended
Sep. 30, 2022
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, 2022.
 
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 September 30, 2022 and December 31, 2021, there was $29 and $62, 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
 September 30, 2022December 31, 2021
Cash and cash equivalents$257 $372 
Restricted cash105 114 
Total cash, cash equivalents and restricted cash shown in the consolidated statement of cash flows$362 $486 
 
Concentration of Credit Risk
 
The Company places its cash and cash equivalents with financial institutions and, at times, cash held in money market accounts may exceed the Federal Deposit Insurance Corporation insured limit.
 
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.
 
Investments for which market quotations are readily available are typically valued at such market quotations. In order to validate market quotations, the Company 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 board of directors, based on, among other things, the input of the Company’s investment adviser, audit committee and independent third-party valuation firms that have been engaged at the direction of the Company’s board of directors to assist in the valuation of each portfolio investment without a readily available market quotation 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, 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 investment valuation process within the context of performing the integrated audit.
 
As part of the valuation process, the Company 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 considers the pricing indicated by the external event to corroborate its valuation.
 
Because there is not a readily available market value for most of the investments in its portfolio, the Company values substantially all of its portfolio investments at fair value as determined in good faith by its board of directors, 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 board of directors undertakes a multi-step valuation process each quarter, as described below:

•The Company’s quarterly valuation process begins with each portfolio company or investment being initially valued by the investment professionals responsible for the portfolio investment in conjunction with the Company’s portfolio management team.

•Preliminary valuations are reviewed and discussed with the Company’s investment adviser’s management and investment professionals, and then valuation recommendations are presented to the Company’s board of directors.

•The audit committee of the Company’s board of directors reviews these valuations, as well as the input of third parties, including independent third-party valuation firms who have reviewed a portion of the investments in the Company’s portfolio at fair value.

•The Company’s board of directors discusses valuations and ultimately 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 Company’s investment adviser, audit committee and, where applicable, independent third-party valuation firms.
 
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 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, 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 Financial Statements
 
The preparation of 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 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 (“FASB”). ASUs not listed below were assessed and either determined to be not applicable or expected to have minimal impact on its consolidated financial statements.

In August 2020, the FASB issued ASU No. 2020-06, “Debt-Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging-Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity,” which simplifies the accounting for convertible instruments by removing the separation models for (1) convertible debt with a cash conversion feature and (2) convertible instruments with a beneficial conversion feature. As a result, after adoption, a convertible debt instrument will be accounted for as a single liability measured at its amortized cost. Additionally, ASU 2020-06 requires the application of the if-converted method to calculate the impact of convertible instruments on diluted earnings per share. ASU 2020-06 is effective for fiscal years beginning after December 15, 2021 and can be adopted on either a fully retrospective or modified retrospective basis. The Company adopted ASU 2020-06 on January 1, 2022, electing the modified retrospective transition method that allows for a cumulative-effect adjustment in the period of adoption. As a result of adopting the guidance, the Company is no longer separating the convertible instruments into debt and equity components, and is instead accounting for convertible instruments as entirely debt.

The impact of the Company’s adoption under the modified retrospective basis required a cumulative effect adjustment to opening net assets for the remaining unamortized discount on the $403 in aggregate principal amount of unsecured convertible notes outstanding as of March 31, 2022, and a requirement for the Company to calculate diluted earnings per share using the if-converted method which assumes full share settlement for the aggregate value of the $403 in aggregate principal amount of unsecured convertible notes. The Company’s adoption of this guidance did not have a material impact on the Company’s financial position, results of operations or cash flows. See Notes 5 and 10 for additional information on the effects of the adoption of ASU 2020-06.

In March 2020, the FASB issued ASU No. 2020-04, “Reference Rate Reform (Topic 848),” which provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments apply only to contracts, hedging relationships, and other transactions that reference London Interbank Offered Rate (“LIBOR”) or another reference rate expected to be discontinued because of reference rate reform. In January 2021, the FASB issued ASU No. 2021-01, Reference Rate Reform (Topic 848), which expanded the scope of Topic 848 to include derivative instruments impacted by discounting transition. ASU 2020-04 and ASU 2021-01 are effective for all entities through December 31, 2022. The expedients and exceptions provided by the amendments do not apply to contract modifications and hedging relationships entered into or evaluated after December 31, 2022, except for hedging transactions as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. The Company is currently evaluating the impact of the adoption of ASU 2020-04 and 2021-01 on its consolidated financial statements.
v3.22.2.2
AGREEMENTS
 9 Months Ended
Sep. 30, 2022
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 Ares Capital Management. Subject to the overall supervision of the Company’s board of directors, 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 nine months ended September 30, 2022 and 2021 were as follows:

For the Three Months Ended September 30,For the Nine Months Ended September 30,
2022202120222021
Base management fees$78 $65 $226 $184 
Income based fees$63 $53 $171 $158 
Capital gains incentive fees(1)$(37)$30 $(64)$133 
________________________________________

(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 nine months ended September 30, 2022 and 2021. In addition, in accordance with GAAP, the Company had cumulatively accrued a capital gains incentive fee of $72 as of September 30, 2022. 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 September 30, 2022, 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.
 
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 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, referred to herein as 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 nine months ended September 30, 2022, the Company incurred $3 and $9, respectively, in administrative fees, and $4 and $11, respectively, for the comparable periods in 2021. As of September 30, 2022 and December 31, 2021, a total of $3 and $4, respectively, in administrative fees were unpaid and included in “accounts payable and other liabilities” in the accompanying consolidated balance sheet.
v3.22.2.2
INVESTMENTS
 9 Months Ended
Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]  
Investments
4. INVESTMENTS

As of September 30, 2022 and December 31, 2021, investments consisted of the following:

 As of
 September 30, 2022December 31, 2021
Amortized Cost(1)Fair ValueAmortized Cost(1)Fair Value
First lien senior secured loans(2)$9,821 $9,509 $9,583 $9,459 
Second lien senior secured loans4,011 3,797 4,614 4,524 
Subordinated certificates of the SDLP(3)1,121 1,121 987 987 
Senior subordinated loans1,102 1,051 896 890 
Preferred equity2,071 2,052 1,547 1,561 
Ivy Hill Asset Management, L.P.(4)1,809 1,958 781 936 
Other equity1,534 1,851 1,402 1,652 
Total$21,469 $21,339 $19,810 $20,009 
________________________________________

(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 $5,127 and $4,998, respectively, as of September 30, 2022, and $5,210 and $5,163, respectively, as of December 31, 2021.

(3)The proceeds from these certificates were applied to co-investments with Varagon and its clients to fund first lien senior secured loans to 21 and 19 different borrowers as of September 30, 2022 and December 31, 2021, respectively.

(4)Includes the Company’s equity and subordinated loan investments in IHAM, as applicable.
  
The Company uses Global Industry Classification Standards for classifying the industry groupings of its portfolio companies. The industrial and geographic compositions of the Company’s portfolio at fair value as of September 30, 2022 and December 31, 2021 were as follows:
 As of
September 30, 2022December 31, 2021
Industry
Software & Services22.5 %21.9 %
Diversified Financials(1)12.3 7.5 
Health Care Services10.1 10.8 
Commercial & Professional Services8.2 9.2 
Investment Funds and Vehicles(2)5.5 5.2 
Insurance Services5.1 5.8 
Power Generation4.7 4.5 
Consumer Services4.0 3.9 
Capital Goods4.0 4.8 
Consumer Durables & Apparel3.9 4.4 
Automobiles & Components3.2 4.6 
Food & Beverage2.4 2.2 
Pharmaceuticals, Biotechnology & Life Sciences2.3 1.9 
Retailing and Distribution2.2 2.8 
Media & Entertainment2.2 2.2 
Other7.4 8.3 
Total100.0 %100.0 %
________________________________________

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

(2)Includes the Company’s investment in the SDLP, which had made first lien senior secured loans to 21 and 19 different borrowers as of September 30, 2022 and December 31, 2021, respectively. The portfolio companies in the SDLP are in industries similar to the companies in the Company’s portfolio.

 As of
September 30, 2022December 31, 2021
Geographic Region
West(1)34.5 %31.2 %
Midwest25.0 27.9 
Southeast17.8 17.2 
Mid-Atlantic13.1 14.5 
Northeast4.6 4.8 
International5.0 4.4 
Total100.0 %100.0 %
________________________________________

(1)Includes the Company’s investment in the SDLP, which represented 5.3% and 4.9% of the total investment portfolio at fair value as of September 30, 2022 and December 31, 2021, respectively.

As of September 30, 2022 and December 31, 2021, loans on non-accrual status represented 1.6% of the total investments at amortized cost (or 0.9% at fair value) and 0.8% at amortized cost (or 0.5% 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 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 $350. 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 September 30, 2022 and December 31, 2021, the Company and a client of Varagon owned 87.5% and 12.5%, respectively, of the outstanding SDLP Certificates.

As of September 30, 2022 and December 31, 2021, 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
September 30, 2022December 31, 2021
Total capital funded to the SDLP(1)$4,772 $4,168 
Total capital funded to the SDLP by the Company(1)$1,121 $987 
Total unfunded capital commitments to the SDLP(2)$311 $262 
Total unfunded capital commitments to the SDLP by the Company(2)$73 $62 
___________________________________________________________________________
(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 LIBOR 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 were $1,121 and $1,121, respectively, as of September 30, 2022 and $987 and $987, respectively, as of December 31, 2021. The Company’s yield on its investment in the SDLP Certificates at amortized cost and fair value was 13.5% and 13.5%, respectively, as of September 30, 2022, and 13.5% and 13.5%, respectively, as of December 31, 2021. The interest income from the Company’s investment in the SDLP Certificates and capital structuring service and other fees earned for the three and nine months ended September 30, 2022 and 2021 were as follows:

For the Three Months Ended September 30,For the Nine Months Ended September 30,
2022202120222021
Interest income
$37 $33 $105 $106 
Capital structuring service and other fees
$7 $7 $15 $13 
As of September 30, 2022 and December 31, 2021, 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 September 30, 2022, one of the loans was on non-accrual status. As of December 31, 2021, none of the loans were on non-accrual status. Below is a summary of the SDLP’s portfolio.
As of
September 30, 2022December 31, 2021
Total first lien senior secured loans(1)(2)$4,798 $4,194 
Largest loan to a single borrower(1)$380 $342 
Total of five largest loans to borrowers(1)$1,616 $1,540 
Number of borrowers in the SDLP21 19 
Commitments to fund delayed draw loans(3)$311 $262 
___________________________________________________________________________

(1)At principal amount.

(2)First lien senior secured loans include certain loans that the SDLP classifies as “unitranche” loans. As of September 30, 2022 and December 31, 2021, the total principal amount of loans in the SDLP portfolio that the SDLP classified as “unitranche” loans was $3,737 and $2,908, respectively.

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

Ivy Hill Asset Management, L.P.

Ivy Hill Asset Management, L.P. (“IHAM”) is an asset management services company and an SEC-registered investment adviser. The Company has made investments in IHAM, its wholly owned portfolio company, and previously made investments in certain vehicles managed by IHAM. As of September 30, 2022, IHAM had assets under management of approximately $12.5 billion. As of September 30, 2022, IHAM managed 21 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 September 30, 2022 and December 31, 2021 was 2,133 and $966, respectively. For the three and nine months ended September 30, 2022, IHAM had management and incentive fee income of $13 and $34, respectively, and other investment-related income of $42 and $103, respectively. For the three and nine months ended September 30, 2021, IHAM had management and incentive fee income of $8 and $23, respectively, and other investment-related income of $22 and $64, respectively.

 The amortized cost and fair value of the Company’s investment in IHAM was $1,809 and $1,958, respectively, as of September 30, 2022, which was comprised of an equity investment of $1,373 and $1,522, respectively, and a debt investment of $436 and $436, respectively. The amortized cost and fair value of the Company’s investment in IHAM was $781 and $936, respectively, as of December 31, 2021, which was comprised of an equity investment of $765 and $920, respectively, and a debt investment of $16 and $16, respectively. The dividend income received and interest income earned from IHAM for the three and nine months ended September 30, 2022 and 2021 were as follows:

For the Three Months Ended September 30,For the Nine Months Ended September 30,
2022202120222021
Dividend income
$55 $23 $150 $65 
Interest income
$8 $— $11 $2 

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 nine months ended September 30, 2022 and 2021, IHAM or certain of the IHAM Vehicles purchased $2,415 and $1,049, respectively, of loans from the Company. For the nine months ended September 30, 2022 and 2021, the Company recognized $10 and $5, respectively, of net realized losses from these sales. During the nine months ended September 30, 2022 and 2021, $233 and $108, respectively, of investment commitments were repaid to the Company by IHAM. During the nine months ended September 30, 2022, the Company purchased $27 of investments from certain IHAM Vehicles.
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.
v3.22.2.2
DEBT
 9 Months Ended
Sep. 30, 2022
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 September 30, 2022, the aggregate principal amount outstanding of the senior securities issued by the Company was $11,853 and the Company’s asset coverage was 179%.

The Company’s outstanding debt as of September 30, 2022 and December 31, 2021 was as follows:

 As of 
 September 30, 2022 December 31, 2021 
Total Aggregate Principal Amount Committed/ Outstanding (1)Principal Amount OutstandingCarrying ValueTotal Aggregate Principal Amount Committed/ Outstanding (1)Principal Amount OutstandingCarrying Value
Revolving Credit Facility$4,843 (2)$1,787 $1,787 $4,232 (2)$1,507 $1,507 
Revolving Funding Facility1,775 932 932 1,525 762 762 
SMBC Funding Facility800 (3)456 456 800 (3)401 401 
BNP Funding Facility300 175 175 300 — — 
2022 Convertible Notes— — — 388 388 388 (4)
2024 Convertible Notes403 403 399 (4)403 403 395 (4)
2023 Notes750 750 750 (5)750 750 748 (5)
2024 Notes900 900 898 (6)900 900 897 (6)
March 2025 Notes600 600 597 (7)600 600 596 (7)
July 2025 Notes1,250 1,250 1,258 (8)1,250 1,250 1,260 (8)
January 2026 Notes1,150 1,150 1,144 (9)1,150 1,150 1,143 (9)
July 2026 Notes1,000 1,000 990 (10)1,000 1,000 988 (10)
2027 Notes500 500 494 (11)— — — 
2028 Notes1,250 1,250 1,246 (12)1,250 1,250 1,246 (12)
2031 Notes700 700 690 (13)700 700 689 (13)
Total$16,221 $11,853 $11,816 $15,248 $11,061 $11,020 
________________________________________

(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 $7,265.
(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 of the 2024 Convertible Notes (as defined below). As of September 30, 2022, the total unamortized debt issuance costs and the unamortized discount for the 2024 Convertible Notes (as defined below) was $4. As of December 31, 2021, the total unamortized debt issuance costs and the unamortized discount for the 2022 Convertible Notes and the 2024 Convertible Notes (each as defined below) were $0 and $8, respectively. In February 2022, the Company repaid in full the 2022 Convertible Notes upon their maturity.

(5)Represents the aggregate principal amount outstanding of the 2023 Notes (as defined below), less unamortized debt issuance costs and the unamortized discount recorded upon the issuance of the 2023 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the unamortized discount was $0 and $2, respectively.

(6)Represents the aggregate principal amount outstanding of the 2024 Notes (as defined below), less unamortized debt issuance costs and the net unamortized discount recorded upon the issuance of the 2024 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the net unamortized discount was $2 and $3, respectively.

(7)Represents the aggregate principal amount outstanding of the March 2025 Notes (as defined below), less unamortized debt issuance costs and the unamortized discount recorded upon the issuance of the March 2025 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the unamortized discount was $3 and $4, respectively.

(8)Represents the aggregate principal amount outstanding of the July 2025 Notes (as defined below), less unamortized debt issuance costs and the net unaccreted premium recorded upon the issuance of the July 2025 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the net unaccreted premium was $8 and $10, respectively.

(9)Represents the aggregate principal amount outstanding of the January 2026 Notes (as defined below), less unamortized debt issuance costs and the unamortized discount recorded upon the issuance of the January 2026 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the unamortized discount was $6 and $7, respectively.

(10)Represents the aggregate principal amount outstanding of the July 2026 Notes (as defined below), less unamortized debt issuance costs and the unamortized discount recorded upon the issuance of the July 2026 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the unamortized discount was $10 and $12, respectively.

(11)Represents the aggregate principal amount outstanding of the 2027 Notes (as defined below), less unamortized debt issuance costs and the net unamortized discount recorded upon the issuance of the 2027 Notes. As of September 30, 2022, the total unamortized debt issuance costs and the net unamortized discount was $6.

(12)Represents the aggregate principal amount outstanding of the 2028 Notes (as defined below), less unamortized debt issuance costs and the net unamortized discount recorded upon the issuance of the 2028 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the net unamortized discount was $4 and $4, respectively.

(13)Represents the aggregate principal amount outstanding of the 2031 Notes (as defined below), less unamortized debt issuance costs and the unamortized discount recorded upon the issuance of the 2031 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the unamortized discount was $10 and $11, respectively.

 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 September 30, 2022 were 3.8% and 3.8 years, respectively, and as of December 31, 2021 were 3.1% and 4.2 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 $4,843 at any one time outstanding. The Revolving Credit Facility consists of a $1,087 term loan tranche and a $3,756 revolving tranche. For $1,009 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 $3,499 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 $7,265. The Revolving Credit Facility generally requires payments of interest at the end of each Secured Overnight Financing Rate (“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 September 30, 2022, the Company was in compliance in all material respects with the terms of the Revolving Credit Facility.
 
As of September 30, 2022 and December 31, 2021, there was $1,787 and $1,507 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 September 30, 2022 and December 31, 2021, the Company had $95 and $68, 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 September 30, 2022, there was $2,961 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 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 September 30, 2022, the one, three and six month SOFR was 3.04%, 3.59% and 3.99%, respectively. As of September 30, 2022, 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.

In December 2017, in connection with $395 of the term loan tranche of the Revolving Credit Facility, the Company entered into a three-year interest rate swap agreement to mitigate its exposure to adverse fluctuations in interest rates for a total notional amount of $395, which matured on January 4, 2021.

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 nine months ended September 30, 2022 and 2021, 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 September 30,For the Nine Months Ended September 30,
 2022202120222021
Stated interest expense$19 $4 $34 $14 
Credit facility fees5 4 7 11 
Amortization of debt issuance costs2 2 5 4 
Total interest and credit facility fees expense$26 $10 $46 $29 
Cash paid for interest expense$19 $4 $35 $14 
Average stated interest rate3.95 %1.97 %3.15 %2.09 %
Average outstanding balance$1,875 $889 $1,402 $922 
 
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 September 30, 2022, the Company and Ares Capital CP were in compliance in all material respects with the terms of the Revolving Funding Facility.
 
As of September 30, 2022 and December 31, 2021, there was $932 and $762 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. Prior to December 29, 2021, the interest rate charged on the Revolving Funding Facility was based on one month LIBOR plus 2.00% per annum or a “base rate” plus 1.00% per annum. Since December 29, 2021, 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. Prior to and including December 29, 2021, Ares Capital CP was required to pay a commitment fee of between 0.50% and 1.50% per annum depending on the size of the unused portion of the Revolving Funding Facility.
  
For the three and nine months ended September 30, 2022 and 2021, 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 September 30,For the Nine Months Ended September 30,
 2022202120222021
Stated interest expense$10 $2 $19 $12 
Credit facility fees1 2 3 5 
Amortization of debt issuance costs1 1 2 3 
Total interest and credit facility fees expense$12 $5 $24 $20 
Cash paid for interest expense$9 $3 $19 $11 
Average stated interest rate4.38 %2.69 %3.17 %2.35 %
Average outstanding balance$944 $368 $805 $602 

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 September 30, 2022, the Company and ACJB were in compliance in all material respects with the terms of the SMBC Funding Facility.
 
As of September 30, 2022 and December 31, 2021, there was $456 and $401 outstanding, respectively, under the SMBC Funding Facility. 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 LIBOR 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 September 30, 2022, 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 nine months ended September 30, 2022 and 2021, 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 September 30,For the Nine Months Ended September 30,
 2022202120222021
Stated interest expense$4 $— $9 $2 
Credit facility fees1 2 2 4 
Amortization of debt issuance costs1 1 2 2 
Total interest and credit facility fees expense$6 $3 $13 $8 
Cash paid for interest expense$4 $— $9 $3 
Average stated interest rate4.27 %2.36 %3.00 %2.00 %
Average outstanding balance$402 $9 $403 $155 
    
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 $300 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 June 11, 2023 and June 11, 2025, 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 September 30, 2022, the Company and AFB were in compliance in all material respects with the terms of the BNP Funding Facility.
 
As of September 30, 2022, there was $175 outstanding under the BNP Funding Facility. As of December 31, 2021, there were no amounts outstanding under the BNP Funding Facility. Since June 29, 2021, the interest rate charged on the BNP Funding Facility is 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. Prior to June 29, 2021, the interest rate charged on the BNP Funding Facility was based on three month LIBOR (subject to a floor of 0.45%), or a “base rate” (as defined in the agreements governing the BNP Funding Facility) plus a margin that generally ranged between 2.65% and 3.15% (depending on the types of assets such advances relate to), with a weighted average margin floor for all classes of advances of (i) 2.75% during the reinvestment period and (ii) 3.25% following the reinvestment period. As of September 30, 2022, the applicable spread in effect was 1.80%. 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 nine months ended September 30, 2022 and 2021, 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 September 30,For the Nine Months Ended September 30,
 2022202120222021
Stated interest expense$2 $— $3 $1 
Credit facility fees— 1 1 3 
Amortization of debt issuance costs— — 1 — 
Total interest and credit facility fees expense$2 $1 $5 $4 
Cash paid for interest expense$1 $— $1 $1 
Average stated interest rate4.35 %— %3.95 %3.45 %
Average outstanding balance$143 $— $81 $20 

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 the 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 September 30, 2022) subject to customary anti-dilution adjustments and the requirements of the indenture (the “Convertible Unsecured 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 Convertible Unsecured 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 Convertible Unsecured 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 September 30, 2022 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)$19.78 
Conversion rate (shares per one thousand dollar principal amount)(1)50.5549 
Conversion dateDecember 1, 2023
________________________________________

(1)Represents conversion price and conversion rate, as applicable, as of September 30, 2022, taking into account any applicable de minimis adjustments that will be made on the conversion date.
 
As of September 30, 2022, 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 Convertible Unsecured 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 Convertible Unsecured Notes Indenture. As of September 30, 2022, the Company was in compliance in all material respects with the terms of the Convertible Unsecured 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 Convertible Unsecured Notes Indentures. 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 accounting for the Convertible Unsecured Notes, the Company estimated at the time of issuance separate debt and equity components for the Convertible Unsecured Notes. An original issue discount equal to the equity components of the Convertible Unsecured Notes was recorded in “capital in excess of par value” in the accompanying consolidated balance sheet. Additionally, the issuance costs associated with the Convertible Unsecured Notes were allocated to the debt and equity components in proportion to the allocation of the proceeds and accounted for as debt issuance costs and equity issuance costs, respectively. As a result of adopting ASU 2020-06 on January 1, 2022, the Company is no longer separating the 2024 Convertible Notes into debt and equity components, and is instead accounting for the 2024 Convertible Notes entirely as debt.
 
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 September 30, 2022, 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 accretion(1)
Debt issuance costs, net of amortization(3)
Carrying value of debt$399 
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.

In February 2022, the Company repaid in full the $388 in aggregate principal amount of unsecured convertible notes (the “2022 Convertible Notes”) upon their maturity, resulting in a realized loss on the extinguishment of debt of $48. The 2022 Convertible Notes bore interest at a rate of 4.60% per year, payable semi-annually.

For the three and nine months ended September 30, 2022 and 2021, 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 September 30,For the Nine Months Ended September 30,
 2022202120222021
Stated interest expense$5 $8 $15 $25 
Amortization of debt issuance costs— 1 1 2 
Accretion of original issue discount— 1 2 4 
Total interest expense$5 $10 $18 $31 
Cash paid for interest expense$9 $17 $26 $34 

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 September 30, 2022 are listed below.


Unsecured Notes		Aggregate Principal Amount IssuedInterest RateOriginal Issuance DateMaturity Date
2023 Notes$750 3.500%August 10, 2017February 10, 2023
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 nine months ended September 30, 2022 and 2021, 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 September 30,For the Nine Months Ended September 30,
 2022202120222021
Stated interest expense$67 $62 $202 $168 
Amortization of debt issuance costs4 4 11 8 
Net (amortization) accretion of original issue premium/discount(2)(1)(5)(1)
Total interest expense$69 $65 $208 $175 
Cash paid for interest expense$79 $90 $213 $187 
 
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 September 30, 2022, 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.
v3.22.2.2
DERIVATIVE INSTRUMENTS
 9 Months Ended
Sep. 30, 2022
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 September 30, 2022 and December 31, 2021, the counterparty to these forward currency contracts was Royal Bank of Canada and Truist Financial Corporation, respectively.

In December 2017, in connection with $395 of the term loan tranche of the Revolving Credit Facility, the Company entered into a three-year interest rate swap agreement to mitigate its exposure to adverse fluctuations in interest rates for a total notional amount of $395, which matured on January 4, 2021. Under the interest rate swap agreement, the Company paid a fixed interest rate of 2.06% and received a floating rate based on the prevailing one-month LIBOR plus a spread of 1.75%.

Certain information related to the Company’s derivative instruments as of September 30, 2022 and December 31, 2021 is presented below.
    
 As of September 30, 2022
Derivative InstrumentNotional
Amount		Maturity DateGross Amount of Recognized AssetsGross Amount of Recognized LiabilitiesBalance Sheet
Location of Net Amounts
Foreign currency forward contractCAD262 10/28/2022$203 $(190)Other assets
Foreign currency forward contractCAD237 10/19/2022178 (171)Other assets
Foreign currency forward contract€135 10/28/2022137 (132)Other assets
Foreign currency forward contract£123 10/28/2022148 (137)Other assets
Foreign currency forward contractNZD72 10/28/202245 (41)Other assets
Foreign currency forward contractCAD2 10/28/20222 (2)Other assets
Foreign currency forward contract€1 10/28/20221 (1)Other assets
Total$714 $(674)
 As of December 31, 2021
Derivative InstrumentNotional
Amount		Maturity DateGross Amount of Recognized AssetsGross Amount of Recognized LiabilitiesBalance Sheet
Location of Net Amounts
Foreign currency forward contractCAD309 1/28/2022$240 $(245)Accounts payable and other liabilities
Foreign currency forward contractCAD209 1/19/2022163 (165)Accounts payable and other liabilities
Foreign currency forward contract€153 1/28/2022172 (174)Accounts payable and other liabilities
Foreign currency forward contract£95 1/28/2022126 (129)Accounts payable and other liabilities
Foreign currency forward contractCAD2 1/28/20221 (1)Accounts payable and other liabilities
Total$702 $(714)

Net realized gains (losses) on derivative instruments recognized by the Company for the three and nine months ended September 30, 2022 and 2021 is in the following location in the consolidated statements of operations:

For the Three Months Ended September 30,For the Nine Months Ended September 30,
Derivative InstrumentStatement Location2022202120222021
Interest rate swapNet realized gains (losses) from foreign currency and other transactions$— $— $— $— 
Foreign currency forward contractNet realized gains (losses) from foreign currency and other transactions22 17 36 9 
Total$22 $17 $36 $9 

Net unrealized gains (losses) on derivative instruments recognized by the Company for the three and nine months ended September 30, 2022 and 2021 is in the following location in the consolidated statements of operations:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
Derivative InstrumentStatement Location2022202120222021
Interest rate swapNet unrealized gains (losses) from foreign currency and other transactions$— $— $— $1 
Foreign currency forward contractNet unrealized gains (losses) from foreign currency and other transactions31 (2)52 3 
Total$31 $(2)$52 $4 
v3.22.2.2
COMMITMENTS AND CONTINGENCIES
 9 Months Ended
Sep. 30, 2022
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 September 30, 2022 and December 31, 2021, 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
 September 30, 2022December 31, 2021
Total revolving and delayed draw loan commitments $3,205 $2,733 
Less: funded commitments(520)(352)
Total unfunded commitments2,685 2,381 
Less: commitments substantially at discretion of the Company— — 
Less: unavailable commitments due to borrowing base or other covenant restrictions— (4)
Total net adjusted unfunded revolving and delayed draw loan commitments$2,685 $2,377 
    
Included within the total revolving and delayed draw loan commitments as of September 30, 2022 and December 31, 2021 were delayed draw loan commitments totaling $1,490 and $1,273, respectively. The Company’s commitment to fund delayed draw loans is 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 September 30, 2022 were commitments to issue up to $352 in letters of credit through a financial intermediary on behalf of certain portfolio companies. As of September 30, 2022, the Company had $41 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, $9 expire in 2022 and $32 expire in 2023.
 
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 September 30, 2022 and December 31, 2021, the Company was party to subscription agreements to fund equity investments in private equity investment partnerships as follows:
 As of
 September 30, 2022December 31, 2021
Total private equity commitments$116 $111 
Less: funded private equity commitments(66)(68)
Total unfunded private equity commitments50 43 
Less: private equity commitments substantially at discretion of the Company(50)(43)
Total net adjusted unfunded private equity commitments$— $— 
 
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 nine months ended September 30, 2022 and 2021 were as follows:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
2022202120222021
Operating lease costs$2 $3 $7 $8 
Less: sublease income(2)(3)(7)(8)
Total operating lease costs (1)$— $— $— $— 

________________________________________

(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 nine months ended September 30, 2022 and 2021 were as follows:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
2022202120222021
Cash paid for amounts included in the measurement of operating lease liabilities$4 $4 $12 $12 
Operating ROU assets obtained in exchange for operating lease liabilities$3 $2 $6 $6 

Supplemental balance sheet information as of September 30, 2022 and December 31, 2022 related to operating leases were as follows:

As of
September 30, 2022December 31, 2021
Operating lease ROU assets$21 $27 
Operating lease liabilities$33 $43 
Weighted average remaining lease term3.2 years3.7 years
Weighted average discount rate3.8 %3.1%
 
The following table shows future minimum lease payments under the Company’s operating leases and a reconciliation to the operating lease liability as of September 30, 2022:

Amount
2022$4 
202316 
20246 
20256 
20266 
  Total lease payments38 
Less imputed interest(5)
  Total operating lease liabilities$33 

The following table shows future expected rental payments to be received under the Company’s subleases where the Company is the sublessor as of September 30, 2022:

Amount
2022$2 
20239 
20244 
20254 
20264 
Total$23 
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 September 30, 2022 and December 31, 2021, 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
 September 30, 2022December 31, 2021
Total revolving and delayed draw loan commitments $3,205 $2,733 
Less: funded commitments(520)(352)
Total unfunded commitments2,685 2,381 
Less: commitments substantially at discretion of the Company— — 
Less: unavailable commitments due to borrowing base or other covenant restrictions— (4)
Total net adjusted unfunded revolving and delayed draw loan commitments$2,685 $2,377 
    
Included within the total revolving and delayed draw loan commitments as of September 30, 2022 and December 31, 2021 were delayed draw loan commitments totaling $1,490 and $1,273, respectively. The Company’s commitment to fund delayed draw loans is 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 September 30, 2022 were commitments to issue up to $352 in letters of credit through a financial intermediary on behalf of certain portfolio companies. As of September 30, 2022, the Company had $41 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, $9 expire in 2022 and $32 expire in 2023.
 
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 September 30, 2022 and December 31, 2021, the Company was party to subscription agreements to fund equity investments in private equity investment partnerships as follows:
 As of
 September 30, 2022December 31, 2021
Total private equity commitments$116 $111 
Less: funded private equity commitments(66)(68)
Total unfunded private equity commitments50 43 
Less: private equity commitments substantially at discretion of the Company(50)(43)
Total net adjusted unfunded private equity commitments$— $— 
 
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 nine months ended September 30, 2022 and 2021 were as follows:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
2022202120222021
Operating lease costs$2 $3 $7 $8 
Less: sublease income(2)(3)(7)(8)
Total operating lease costs (1)$— $— $— $— 

________________________________________

(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 nine months ended September 30, 2022 and 2021 were as follows:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
2022202120222021
Cash paid for amounts included in the measurement of operating lease liabilities$4 $4 $12 $12 
Operating ROU assets obtained in exchange for operating lease liabilities$3 $2 $6 $6 

Supplemental balance sheet information as of September 30, 2022 and December 31, 2022 related to operating leases were as follows:

As of
September 30, 2022December 31, 2021
Operating lease ROU assets$21 $27 
Operating lease liabilities$33 $43 
Weighted average remaining lease term3.2 years3.7 years
Weighted average discount rate3.8 %3.1%
 
The following table shows future minimum lease payments under the Company’s operating leases and a reconciliation to the operating lease liability as of September 30, 2022:

Amount
2022$4 
202316 
20246 
20256 
20266 
  Total lease payments38 
Less imputed interest(5)
  Total operating lease liabilities$33 

The following table shows future expected rental payments to be received under the Company’s subleases where the Company is the sublessor as of September 30, 2022:

Amount
2022$2 
20239 
20244 
20254 
20264 
Total$23 
v3.22.2.2
FAIR VALUE OF FINANCIAL INSTRUMENTS
 9 Months Ended
Sep. 30, 2022
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 to more easily understand 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 continues to employ the net asset valuation policy approved by the Company’s board of directors that is consistent with ASC 820-10 (see Note 2 for more information). Consistent with the Company’s valuation policy, it 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. The Company’s valuation policy considers the fact that 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 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 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 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, 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 tables summarize the significant unobservable inputs the Company used to value the majority of its investments categorized within Level 3 as of September 30, 2022 and December 31, 2021. The tables are not intended to be all-inclusive, but instead capture the significant unobservable inputs relevant to the Company’s determination of fair values.
 As of September 30, 2022 
Unobservable Input
Asset CategoryFair ValuePrimary Valuation TechniquesInputEstimated Range
Weighted Average(1)
First lien senior secured loans$9,301 Yield analysisMarket yield
5.6% - 23.5%
10.8%
Second lien senior secured loans3,711 Yield analysisMarket yield
10.0% - 23.4%
13.4%
Subordinated certificates of the SDLP1,121 Discounted cash flow analysisDiscount rate
11.0% - 13.4%
12.0%
Senior subordinated loans1,043 Yield analysisMarket yield
7.1% - 14.6%
12.1%
Preferred equity2,052 EV market multiple analysisEBITDA multiple
2.9x - 40.6x
16.1x
Ivy Hill Asset Management, L.P.(2)1,958 Discounted cash flow analysisDiscount rate
11.1% - 23.7%
13.4%
Other equity1,791 EV market multiple analysisEBITDA multiple
2.3x - 55.9x
15.2x
Total investments$20,977 
________________________________________

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

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

 As of December 31, 2021 
Unobservable Input
Asset CategoryFair ValuePrimary Valuation TechniquesInputEstimated Range
Weighted Average(1)
First lien senior secured loans$9,456 Yield analysisMarket yield
2.0% - 16.5%
7.6%
Second lien senior secured loans4,432 Yield analysisMarket yield
6.8% - 22.9%
9.5%
Subordinated certificates of the SDLP987 Discounted cash flow analysisDiscount rate
8.8% - 9.7%
9.3%
Senior subordinated loans889 Yield analysisMarket yield
7.1% - 27.8%
11.5%
Preferred equity1,561 EV market multiple analysisEBITDA multiple
3.2x - 64.4x
16.5x
Ivy Hill Asset Management, L.P.(2)936 Discounted cash flow analysisDiscount rate
9.9% - 27.9%
16.3%
Other equity1,647 EV market multiple analysisEBITDA multiple
4.9x - 32.1x
14.9x
Total investments$19,908 
________________________________________

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

(2)Includes the Company’s equity and subordinated loan 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 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 table presents fair value measurements of cash and cash equivalents, restricted cash, investments, derivatives and unfunded revolving and delayed draw loan commitments as of September 30, 2022:

 Fair Value Measurements Using
TotalLevel 1Level 2Level 3
Cash and cash equivalents$257 $257 $— $— 
Restricted cash$105 $105 $— $— 
Investments not measured at net asset value$21,334 $55 $302 $20,977 
Investments measured at net asset value(1)5 
 Total investments$21,339 
Derivatives$40 $— $40 $— 
Unfunded revolving and delayed draw loan commitments(2)$(54)$— $— $(54)
________________________________________

(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, 2021:

 Fair Value Measurements Using
TotalLevel 1Level 2Level 3
Cash and cash equivalents$372 $372 $— $— 
Restricted cash$114 $114 $— $— 
Investments not measured at net asset value$20,004 $— $96 $19,908 
Investments measured at net asset value (1)5 
  Total investments$20,009 
Derivatives$(12)$— $(12)$— 
Unfunded revolving and delayed draw loan commitments(2)$(20)$— $— $(20)
________________________________________

(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 changes in investments that use Level 3 inputs as of and for the three and nine months ended September 30, 2022:
 As of and For the Three Months Ended September 30, 2022
Balance as of June 30, 2022$21,012 
Net realized loss(22)
Net unrealized losses(194)
Purchases2,059 
Sales(1,099)
Repayments(777)
PIK interest and dividends71 
Net accretion of discount on securities3 
Net transfers in and/or out of Level 3(76)
Balance as of September 30, 2022$20,977 


 As of and For the Nine Months Ended September 30, 2022
Balance as of December 31, 2021$19,908 
Net realized gains23 
Net unrealized losses(346)
Purchases6,730 
Sales(3,305)
Repayments(2,183)
PIK interest and dividends218 
Net accretion of discount on securities8 
Net transfers in and/or out of Level 3(76)
Balance as of September 30, 2022$20,977 

Investments were transferred into and out of Level 3 during the three and nine months ended September 30, 2022. 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 September 30, 2022, the net unrealized depreciation on the investments that use Level 3 inputs was $179.

For the three and nine months ended September 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 September 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 $(197) and $(302), respectively.
The following table presents changes in investments that use Level 3 inputs as of and for the three and nine months ended September 30, 2021:
As of and For the Three Months Ended September 30, 2021
Balance as of June 30, 2021$17,089 
Net realized gains123 
Net unrealized gains11 
Purchases2,517 
Sales(860)
Repayments(1,328)
PIK interest and dividends65 
Net accretion of discount on securities5 
Net transfers in and/or out of Level 344 
Balance as of September 30, 2021$17,666 

As of and For the Nine Months Ended September 30, 2021
Balance as of December 31, 2020$15,506 
Net realized gains258 
Net unrealized gains455 
Purchases8,124 
Sales(3,375)
Repayments(3,537)
PIK interest and dividends180 
Net accretion of discount on securities11 
Net transfers in and/or out of Level 344 
Balance as of September 30, 2021$17,666 


Investments were transferred into and out of Level 3 during the three and nine months ended September 30, 2021. 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 September 30, 2021, the net unrealized appreciation on the investments that use Level 3 inputs was $23.

For the three and nine months ended September 30, 2021, 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 September 30, 2021, and reported within the net unrealized gains (losses) on investments, foreign currency and other transactions in the Company’s consolidated statement of operations was $107 and $570, respectively.
The following are the carrying and fair values of the Company’s debt obligations as of September 30, 2022 and December 31, 2021. 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
 September 30, 2022December 31, 2021
Carrying value(1)Fair value(4)Carrying value(1)Fair value(4)
Revolving Credit Facility$1,787 $1,787 $1,507 $1,507 
Revolving Funding Facility932 932 762 762 
SMBC Funding Facility456 456 401 401 
BNP Funding Facility175 175 — — 
2022 Convertible Notes (principal amount outstanding of $0 and $388, respectively)
— — 388 (2)433 
2024 Convertible Notes (principal amount outstanding of $403)
399 (2)412 395 (2)457 
2023 Notes (principal amount outstanding of $750)
750 (2)747 748 (2)768 
2024 Notes (principal amount outstanding of $900)
898 (2)872 897 (2)952 
March 2025 Notes (principal amount outstanding of $600)
597 (2)567 596 (2)637 
July 2025 Notes (principal amount outstanding of $1,250)
1,258 (2)1,143 1,260 (2)1,297 
January 2026 Notes (principal amount outstanding of $1,150)
1,144 (2)1,048 1,143 (2)1,213 
July 2026 Notes (principal amount outstanding of $1,000)
990 (2)839 988 (2)989 
2027 Notes (principal amount outstanding of $500 and $0, respectively)
494 (2)419 — (2)— 
2028 Notes (principal amount outstanding of $1,250)
1,246 (2)985 1,246 (2)1,248 
2031 Notes (principal amount outstanding of $700)
690 (2)500 689 (2)687 
Total$11,816 (3)$10,882 $11,020 (3)$11,351 
________________________________________

(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 $11,853 and $11,061 as of September 30, 2022 and December 31, 2021, respectively.

(4)The fair value of these debt obligations would be categorized as Level 2 under ASC 820-10.
v3.22.2.2
STOCKHOLDERS’ EQUITY
 9 Months Ended
Sep. 30, 2022
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 nine months ended September 30, 2022:

Issuances of Common Stock		Number of Shares IssuedGross ProceedsUnderwriting Fees/Offering ExpensesNet ProceedsAverage Offering Price Per Share(1)
Public offerings20.4$432.0 $22.0 $410.0 $20.13 (2)
“At the market” offerings19.6403.4 4.6 398.8 $20.57 
Total40.0$835.4 $26.6 $808.8 

________________________________________

(1)    Represents the gross offering price per share before deducting underwriting discounts and commissions and offering expenses.

(2)    11.2 and 9.2 of the shares were sold to the underwriters for a price of $21.06 per share and $19.00 per share, respectively, which the underwriters were then permitted to sell at variable prices to the public.

“At the Market” Offerings

The Company has entered into equity distribution agreements with several banks (the “Equity Distribution Agreements”). In connection with entering into the currently effective Equity Distribution Agreements, Ares Capital and each of the banks terminated the equity distribution agreements, each dated October 26, 2021, previously entered into with each of the several banks in accordance with their respective terms. 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 $500 shares 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 currently effective Equity Distribution Agreements, common stock with an aggregate offering amount of $413 remained available for issuance as of September 30, 2022.

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 $500 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. The expiration date of the stock repurchase program is February 15, 2023. The program may be suspended, extended, modified or discontinued at any time. As of September 30, 2022, there was $500 available for repurchases under the stock repurchase program.
During the nine months ended September 30, 2022 and 2021, the Company did not repurchase any shares of the Company’s common stock under the stock repurchase program.
v3.22.2.2
EARNINGS PER SHARE
 9 Months Ended
Sep. 30, 2022
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 nine months ended September 30, 2022 and 2021:

 For the Three Months Ended September 30,For the Nine Months Ended September 30,
 2022202120222021
Net increase in stockholders’ equity resulting from operations—basic$104 $334 $426 $1,185 
Adjustment for interest expense on 2024 Convertible Notes(1)4 — 13 — 
Net increase in stockholders’ equity resulting from operations—diluted$108 $334 $439 $1,185 
Weighted average shares of common stock outstanding—basic503 453 492 441 
Assumed conversion of 2024 Convertible Notes20 — 20 — 
Weighted average shares of common stock outstanding—diluted523 453 512 441 
Net increase in stockholders’ equity resulting from operations per share—basic$0.21 $0.73 $0.86 $2.68 
Net increase in stockholders’ equity resulting from operations per share—diluted$0.21 $0.73 $0.86 $2.68 
________________________________________

(1)    Includes the impact of income based fees.

Subsequent to the adoption of ASU 2020-06 on January 1, 2022, for the purpose of calculating diluted net increase in stockholders’ equity resulting from operations per share for the three and nine months ended September 30, 2022, the Company utilized the if-converted method which assumes full share settlement for the aggregate value of the 2024 Convertible Notes. Under the allowed modified retrospective method, diluted net increase in stockholders’ equity resulting from operations per share for prior periods were not restated to reflect the impact of ASU 2020-06. Prior to the adoption of ASU 2020-06, for the purpose of calculating diluted net increase in stockholders’ equity resulting from operations per share, the average closing price of the Company’s common stock for the three and nine months ended September 30, 2021 was more than the conversion price for each of the Convertible Unsecured Notes outstanding as of September 30, 2021. Therefore, the underlying shares for the intrinsic value of the embedded options in the Convertible Unsecured Notes outstanding during the three and nine months ended September 30, 2021 had no impact on the computation of diluted net increase in stockholders’ equity resulting from operations per share.
v3.22.2.2
DIVIDENDS AND DISTRIBUTIONS
 9 Months Ended
Sep. 30, 2022
Equity [Abstract]  
DIVIDENDS AND DISTRIBUTIONS
11. DIVIDENDS AND DISTRIBUTIONS

The following table summarizes the Company’s dividends declared and payable during the nine months ended September 30, 2022 and 2021:

Date declaredRecord datePayment datePer share
amount		Total amount
July 26, 2022September 15, 2022September 30, 2022$0.43 $219 
February 9, 2022September 15, 2022September 30, 20220.03 (1)15 
April 26, 2022June 15, 2022June 30, 20220.42 208 
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 nine months ended September 30, 2022
$1.36 $677 
July 28, 2021September 15, 2021September 30, 2021$0.41 $189 
April 28, 2021June 15, 2021June 30, 20210.40 177 
February 10, 2021March 15, 2021March 31, 20210.40 175 
Total dividends declared and payable for the nine months ended September 30, 2021
$1.21 $541 
___________________________________________________________________________
(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 nine months ended September 30, 2022 and 2021, was as follows:
For the Nine Months Ended September 30,
20222021
Shares issued0.6 1.5 
Average issue price per share$20.95 $19.52 
Shares purchased by plan agent to satisfy dividends declared and payable during the period for stockholders 1.6 — 
Average purchase price per share$17.85 $— 
v3.22.2.2
RELATED PARTY TRANSACTIONS
 9 Months Ended
Sep. 30, 2022
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 nine months ended September 30, 2022, the Company’s investment adviser or its affiliates incurred and the Company reimbursed such expenses totaling $1 and $3, respectively. For the three and nine months ended September 30, 2021, the Company’s investment adviser or its affiliates incurred and the Company reimbursed such expenses totaling $1 and $4, 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 nine months ended September 30, 2022, amounts payable to the Company under these agreements totaled $0 and $0, respectively. For the three and nine months ended September 30, 2021, 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.
v3.22.2.2
FINANCIAL HIGHLIGHTS
 9 Months Ended
Sep. 30, 2022
Investment Company [Abstract]  
FINANCIAL HIGHLIGHTS
13. FINANCIAL HIGHLIGHTS

The following is a schedule of financial highlights as of and for the nine months ended September 30, 2022 and 2021:

 As of and For the Nine Months Ended September 30,
Per Share Data:20222021
Net asset value, beginning of period(1)$18.96 $16.97 
Issuances of common stock0.10 0.07 
Net investment income for period(2)1.51 1.13 
Net realized and unrealized gains (losses) for period(2)(0.65)1.56 
Net increase in stockholders’ equity0.96 2.76 
Total distributions to stockholders(3)(1.36)(1.21)
Net asset value at end of period(1)$18.56 $18.52 
Per share market value at end of period$16.88 $20.33 
Total return based on market value(4)(14.44)%27.53 %
Total return based on net asset value(5)2.74 %20.87 %
Shares outstanding at end of period508 461 
Ratio/Supplemental Data: 
Net assets at end of period$9,436 $8,537 
Ratio of operating expenses to average net assets(6)(7)9.77 %4.32 %
Ratio of net investment income to average net assets(6)(8)10.73 %3.13 %
Portfolio turnover rate(6)36 %54 %
_______________________________________________________________________________

(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 dividend of $0.09 per share for the nine months ended September 30, 2022.

(4)For the nine months ended September 30, 2022, the total return based on market value equaled the decrease of the ending market value at September 30, 2022 of $16.88 per share from the ending market value at December 31, 2021 of $21.19 per share plus the declared and payable dividends of $1.36 per share for the nine months ended September 30, 2022, divided by the market value at December 31, 2021. For the nine months ended September 30, 2021, the total return based on market value equaled the increase of the ending market value at September 30, 2021 of $20.33 per share from the ending market value at December 31, 2020 of $16.89 per share plus the declared and payable dividends of $1.21 per share for the nine months ended September 30, 2021, divided by the market value at December 31, 2020. 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 nine months ended September 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 $1.36 per share for the nine months ended September 30, 2022, divided by the beginning net asset value for the period. For the nine months ended September 30, 2021, 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 $1.21 per share for the nine months ended September 30, 2021, 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 nine months ended September 30, 2022 and 2021, the ratio of operating expenses to average net assets consisted of the following:
 For the Nine Months Ended September 30,
20222021
Base management fees3.26 %1.11 %
Income based fees and capital gains incentive fees1.54 %1.42 %
Cost of borrowing4.54 %1.60 %
Other operating expenses0.43 %0.19 %
Total operating expenses9.77 %4.32 %
(8)The ratio of net investment income to average net assets excludes income taxes related to realized gains and losses.
v3.22.2.2
SUBSEQUENT EVENTS
 9 Months Ended
Sep. 30, 2022
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 nine months ended September 30, 2022.
v3.22.2.2
SIGNIFICANT ACCOUNTING POLICIES (Policies)
 9 Months Ended
Sep. 30, 2022
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, 2022.
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 money market accounts may exceed the Federal Deposit Insurance Corporation insured limit.
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.
 
Investments for which market quotations are readily available are typically valued at such market quotations. In order to validate market quotations, the Company 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 board of directors, based on, among other things, the input of the Company’s investment adviser, audit committee and independent third-party valuation firms that have been engaged at the direction of the Company’s board of directors to assist in the valuation of each portfolio investment without a readily available market quotation 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, 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 investment valuation process within the context of performing the integrated audit.
 
As part of the valuation process, the Company 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 considers the pricing indicated by the external event to corroborate its valuation.
 
Because there is not a readily available market value for most of the investments in its portfolio, the Company values substantially all of its portfolio investments at fair value as determined in good faith by its board of directors, 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 board of directors undertakes a multi-step valuation process each quarter, as described below:

•The Company’s quarterly valuation process begins with each portfolio company or investment being initially valued by the investment professionals responsible for the portfolio investment in conjunction with the Company’s portfolio management team.

•Preliminary valuations are reviewed and discussed with the Company’s investment adviser’s management and investment professionals, and then valuation recommendations are presented to the Company’s board of directors.

•The audit committee of the Company’s board of directors reviews these valuations, as well as the input of third parties, including independent third-party valuation firms who have reviewed a portion of the investments in the Company’s portfolio at fair value.

•The Company’s board of directors discusses valuations and ultimately 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 Company’s investment adviser, audit committee and, where applicable, independent third-party valuation firms.
 
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 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, 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 Financial Statements
 
The preparation of 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 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 (“FASB”). ASUs not listed below were assessed and either determined to be not applicable or expected to have minimal impact on its consolidated financial statements.

In August 2020, the FASB issued ASU No. 2020-06, “Debt-Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging-Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity,” which simplifies the accounting for convertible instruments by removing the separation models for (1) convertible debt with a cash conversion feature and (2) convertible instruments with a beneficial conversion feature. As a result, after adoption, a convertible debt instrument will be accounted for as a single liability measured at its amortized cost. Additionally, ASU 2020-06 requires the application of the if-converted method to calculate the impact of convertible instruments on diluted earnings per share. ASU 2020-06 is effective for fiscal years beginning after December 15, 2021 and can be adopted on either a fully retrospective or modified retrospective basis. The Company adopted ASU 2020-06 on January 1, 2022, electing the modified retrospective transition method that allows for a cumulative-effect adjustment in the period of adoption. As a result of adopting the guidance, the Company is no longer separating the convertible instruments into debt and equity components, and is instead accounting for convertible instruments as entirely debt.

The impact of the Company’s adoption under the modified retrospective basis required a cumulative effect adjustment to opening net assets for the remaining unamortized discount on the $403 in aggregate principal amount of unsecured convertible notes outstanding as of March 31, 2022, and a requirement for the Company to calculate diluted earnings per share using the if-converted method which assumes full share settlement for the aggregate value of the $403 in aggregate principal amount of unsecured convertible notes. The Company’s adoption of this guidance did not have a material impact on the Company’s financial position, results of operations or cash flows. See Notes 5 and 10 for additional information on the effects of the adoption of ASU 2020-06.

In March 2020, the FASB issued ASU No. 2020-04, “Reference Rate Reform (Topic 848),” which provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments apply only to contracts, hedging relationships, and other transactions that reference London Interbank Offered Rate (“LIBOR”) or another reference rate expected to be discontinued because of reference rate reform. In January 2021, the FASB issued ASU No. 2021-01, Reference Rate Reform (Topic 848), which expanded the scope of Topic 848 to include derivative instruments impacted by discounting transition. ASU 2020-04 and ASU 2021-01 are effective for all entities through December 31, 2022. The expedients and exceptions provided by the amendments do not apply to contract modifications and hedging relationships entered into or evaluated after December 31, 2022, except for hedging transactions as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. The Company is currently evaluating the impact of the adoption of ASU 2020-04 and 2021-01 on its consolidated financial statements.
v3.22.2.2
SIGNIFICANT ACCOUNTING POLICIES (Tables)
 9 Months Ended
Sep. 30, 2022
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
 September 30, 2022December 31, 2021
Cash and cash equivalents$257 $372 
Restricted cash105 114 
Total cash, cash equivalents and restricted cash shown in the consolidated statement of cash flows$362 $486 
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
 September 30, 2022December 31, 2021
Cash and cash equivalents$257 $372 
Restricted cash105 114 
Total cash, cash equivalents and restricted cash shown in the consolidated statement of cash flows$362 $486 
v3.22.2.2
AGREEMENTS (Tables)
 9 Months Ended
Sep. 30, 2022
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 nine months ended September 30, 2022 and 2021 were as follows:

For the Three Months Ended September 30,For the Nine Months Ended September 30,
2022202120222021
Base management fees$78 $65 $226 $184 
Income based fees$63 $53 $171 $158 
Capital gains incentive fees(1)$(37)$30 $(64)$133 
________________________________________

(1)Calculated in accordance with GAAP as discussed below.
v3.22.2.2
INVESTMENTS (Tables)
 9 Months Ended
Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]  
Schedule of Investments
As of September 30, 2022 and December 31, 2021, investments consisted of the following:

 As of
 September 30, 2022December 31, 2021
Amortized Cost(1)Fair ValueAmortized Cost(1)Fair Value
First lien senior secured loans(2)$9,821 $9,509 $9,583 $9,459 
Second lien senior secured loans4,011 3,797 4,614 4,524 
Subordinated certificates of the SDLP(3)1,121 1,121 987 987 
Senior subordinated loans1,102 1,051 896 890 
Preferred equity2,071 2,052 1,547 1,561 
Ivy Hill Asset Management, L.P.(4)1,809 1,958 781 936 
Other equity1,534 1,851 1,402 1,652 
Total$21,469 $21,339 $19,810 $20,009 
________________________________________

(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 $5,127 and $4,998, respectively, as of September 30, 2022, and $5,210 and $5,163, respectively, as of December 31, 2021.

(3)The proceeds from these certificates were applied to co-investments with Varagon and its clients to fund first lien senior secured loans to 21 and 19 different borrowers as of September 30, 2022 and December 31, 2021, respectively.

(4)Includes the Company’s equity and subordinated loan investments in IHAM, as applicable.
  
The Company uses Global Industry Classification Standards for classifying the industry groupings of its portfolio companies. The industrial and geographic compositions of the Company’s portfolio at fair value as of September 30, 2022 and December 31, 2021 were as follows:
 As of
September 30, 2022December 31, 2021
Industry
Software & Services22.5 %21.9 %
Diversified Financials(1)12.3 7.5 
Health Care Services10.1 10.8 
Commercial & Professional Services8.2 9.2 
Investment Funds and Vehicles(2)5.5 5.2 
Insurance Services5.1 5.8 
Power Generation4.7 4.5 
Consumer Services4.0 3.9 
Capital Goods4.0 4.8 
Consumer Durables & Apparel3.9 4.4 
Automobiles & Components3.2 4.6 
Food & Beverage2.4 2.2 
Pharmaceuticals, Biotechnology & Life Sciences2.3 1.9 
Retailing and Distribution2.2 2.8 
Media & Entertainment2.2 2.2 
Other7.4 8.3 
Total100.0 %100.0 %
________________________________________

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

(2)Includes the Company’s investment in the SDLP, which had made first lien senior secured loans to 21 and 19 different borrowers as of September 30, 2022 and December 31, 2021, respectively. The portfolio companies in the SDLP are in industries similar to the companies in the Company’s portfolio.

 As of
September 30, 2022December 31, 2021
Geographic Region
West(1)34.5 %31.2 %
Midwest25.0 27.9 
Southeast17.8 17.2 
Mid-Atlantic13.1 14.5 
Northeast4.6 4.8 
International5.0 4.4 
Total100.0 %100.0 %
________________________________________

(1)Includes the Company’s investment in the SDLP, which represented 5.3% and 4.9% of the total investment portfolio at fair value as of September 30, 2022 and December 31, 2021, respectively.
Below is a summary of the SDLP’s portfolio.
As of
September 30, 2022December 31, 2021
Total first lien senior secured loans(1)(2)$4,798 $4,194 
Largest loan to a single borrower(1)$380 $342 
Total of five largest loans to borrowers(1)$1,616 $1,540 
Number of borrowers in the SDLP21 19 
Commitments to fund delayed draw loans(3)$311 $262 
___________________________________________________________________________

(1)At principal amount.

(2)First lien senior secured loans include certain loans that the SDLP classifies as “unitranche” loans. As of September 30, 2022 and December 31, 2021, the total principal amount of loans in the SDLP portfolio that the SDLP classified as “unitranche” loans was $3,737 and $2,908, respectively.
(3)As discussed above, these commitments have been approved by the investment committee of the SDLP.
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
September 30, 2022December 31, 2021
Total capital funded to the SDLP(1)$4,772 $4,168 
Total capital funded to the SDLP by the Company(1)$1,121 $987 
Total unfunded capital commitments to the SDLP(2)$311 $262 
Total unfunded capital commitments to the SDLP by the Company(2)$73 $62 
___________________________________________________________________________
(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.
As of September 30, 2022 and December 31, 2021, 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
 September 30, 2022December 31, 2021
Total revolving and delayed draw loan commitments $3,205 $2,733 
Less: funded commitments(520)(352)
Total unfunded commitments2,685 2,381 
Less: commitments substantially at discretion of the Company— — 
Less: unavailable commitments due to borrowing base or other covenant restrictions— (4)
Total net adjusted unfunded revolving and delayed draw loan commitments$2,685 $2,377 
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 nine months ended September 30, 2022 and 2021 were as follows:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
2022202120222021
Interest income
$37 $33 $105 $106 
Capital structuring service and other fees
$7 $7 $15 $13 
The dividend income received and interest income earned from IHAM for the three and nine months ended September 30, 2022 and 2021 were as follows:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
2022202120222021
Dividend income
$55 $23 $150 $65 
Interest income
$8 $— $11 $2 
v3.22.2.2
DEBT (Tables)
 9 Months Ended
Sep. 30, 2022
Debt Disclosure [Abstract]  
Schedule of Long-term Debt
The Company’s outstanding debt as of September 30, 2022 and December 31, 2021 was as follows:

 As of 
 September 30, 2022 December 31, 2021 
Total Aggregate Principal Amount Committed/ Outstanding (1)Principal Amount OutstandingCarrying ValueTotal Aggregate Principal Amount Committed/ Outstanding (1)Principal Amount OutstandingCarrying Value
Revolving Credit Facility$4,843 (2)$1,787 $1,787 $4,232 (2)$1,507 $1,507 
Revolving Funding Facility1,775 932 932 1,525 762 762 
SMBC Funding Facility800 (3)456 456 800 (3)401 401 
BNP Funding Facility300 175 175 300 — — 
2022 Convertible Notes— — — 388 388 388 (4)
2024 Convertible Notes403 403 399 (4)403 403 395 (4)
2023 Notes750 750 750 (5)750 750 748 (5)
2024 Notes900 900 898 (6)900 900 897 (6)
March 2025 Notes600 600 597 (7)600 600 596 (7)
July 2025 Notes1,250 1,250 1,258 (8)1,250 1,250 1,260 (8)
January 2026 Notes1,150 1,150 1,144 (9)1,150 1,150 1,143 (9)
July 2026 Notes1,000 1,000 990 (10)1,000 1,000 988 (10)
2027 Notes500 500 494 (11)— — — 
2028 Notes1,250 1,250 1,246 (12)1,250 1,250 1,246 (12)
2031 Notes700 700 690 (13)700 700 689 (13)
Total$16,221 $11,853 $11,816 $15,248 $11,061 $11,020 
________________________________________

(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 $7,265.
(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 of the 2024 Convertible Notes (as defined below). As of September 30, 2022, the total unamortized debt issuance costs and the unamortized discount for the 2024 Convertible Notes (as defined below) was $4. As of December 31, 2021, the total unamortized debt issuance costs and the unamortized discount for the 2022 Convertible Notes and the 2024 Convertible Notes (each as defined below) were $0 and $8, respectively. In February 2022, the Company repaid in full the 2022 Convertible Notes upon their maturity.

(5)Represents the aggregate principal amount outstanding of the 2023 Notes (as defined below), less unamortized debt issuance costs and the unamortized discount recorded upon the issuance of the 2023 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the unamortized discount was $0 and $2, respectively.

(6)Represents the aggregate principal amount outstanding of the 2024 Notes (as defined below), less unamortized debt issuance costs and the net unamortized discount recorded upon the issuance of the 2024 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the net unamortized discount was $2 and $3, respectively.

(7)Represents the aggregate principal amount outstanding of the March 2025 Notes (as defined below), less unamortized debt issuance costs and the unamortized discount recorded upon the issuance of the March 2025 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the unamortized discount was $3 and $4, respectively.

(8)Represents the aggregate principal amount outstanding of the July 2025 Notes (as defined below), less unamortized debt issuance costs and the net unaccreted premium recorded upon the issuance of the July 2025 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the net unaccreted premium was $8 and $10, respectively.

(9)Represents the aggregate principal amount outstanding of the January 2026 Notes (as defined below), less unamortized debt issuance costs and the unamortized discount recorded upon the issuance of the January 2026 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the unamortized discount was $6 and $7, respectively.

(10)Represents the aggregate principal amount outstanding of the July 2026 Notes (as defined below), less unamortized debt issuance costs and the unamortized discount recorded upon the issuance of the July 2026 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the unamortized discount was $10 and $12, respectively.

(11)Represents the aggregate principal amount outstanding of the 2027 Notes (as defined below), less unamortized debt issuance costs and the net unamortized discount recorded upon the issuance of the 2027 Notes. As of September 30, 2022, the total unamortized debt issuance costs and the net unamortized discount was $6.

(12)Represents the aggregate principal amount outstanding of the 2028 Notes (as defined below), less unamortized debt issuance costs and the net unamortized discount recorded upon the issuance of the 2028 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the net unamortized discount was $4 and $4, respectively.

(13)Represents the aggregate principal amount outstanding of the 2031 Notes (as defined below), less unamortized debt issuance costs and the unamortized discount recorded upon the issuance of the 2031 Notes. As of September 30, 2022 and December 31, 2021, the total unamortized debt issuance costs and the unamortized discount was $10 and $11, respectively.
For the three and nine months ended September 30, 2022 and 2021, 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 September 30,For the Nine Months Ended September 30,
 2022202120222021
Stated interest expense$19 $4 $34 $14 
Credit facility fees5 4 7 11 
Amortization of debt issuance costs2 2 5 4 
Total interest and credit facility fees expense$26 $10 $46 $29 
Cash paid for interest expense$19 $4 $35 $14 
Average stated interest rate3.95 %1.97 %3.15 %2.09 %
Average outstanding balance$1,875 $889 $1,402 $922 
For the three and nine months ended September 30, 2022 and 2021, 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 September 30,For the Nine Months Ended September 30,
 2022202120222021
Stated interest expense$10 $2 $19 $12 
Credit facility fees1 2 3 5 
Amortization of debt issuance costs1 1 2 3 
Total interest and credit facility fees expense$12 $5 $24 $20 
Cash paid for interest expense$9 $3 $19 $11 
Average stated interest rate4.38 %2.69 %3.17 %2.35 %
Average outstanding balance$944 $368 $805 $602 
For the three and nine months ended September 30, 2022 and 2021, 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 September 30,For the Nine Months Ended September 30,
 2022202120222021
Stated interest expense$4 $— $9 $2 
Credit facility fees1 2 2 4 
Amortization of debt issuance costs1 1 2 2 
Total interest and credit facility fees expense$6 $3 $13 $8 
Cash paid for interest expense$4 $— $9 $3 
Average stated interest rate4.27 %2.36 %3.00 %2.00 %
Average outstanding balance$402 $9 $403 $155 
For the three and nine months ended September 30, 2022 and 2021, 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 September 30,For the Nine Months Ended September 30,
 2022202120222021
Stated interest expense$2 $— $3 $1 
Credit facility fees— 1 1 3 
Amortization of debt issuance costs— — 1 — 
Total interest and credit facility fees expense$2 $1 $5 $4 
Cash paid for interest expense$1 $— $1 $1 
Average stated interest rate4.35 %— %3.95 %3.45 %
Average outstanding balance$143 $— $81 $20 
Certain key terms related to the convertible features for the 2024 Convertible Notes as of September 30, 2022 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)$19.78 
Conversion rate (shares per one thousand dollar principal amount)(1)50.5549 
Conversion dateDecember 1, 2023
________________________________________

(1)Represents conversion price and conversion rate, as applicable, as of September 30, 2022, taking into account any applicable de minimis adjustments that will be made on the conversion date.
As of September 30, 2022, 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 accretion(1)
Debt issuance costs, net of amortization(3)
Carrying value of debt$399 
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 nine months ended September 30, 2022 and 2021, 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 September 30,For the Nine Months Ended September 30,
 2022202120222021
Stated interest expense$5 $8 $15 $25 
Amortization of debt issuance costs— 1 1 2 
Accretion of original issue discount— 1 2 4 
Total interest expense$5 $10 $18 $31 
Cash paid for interest expense$9 $17 $26 $34 
Certain key terms related to the features for the Unsecured Notes as of September 30, 2022 are listed below.

Unsecured Notes		Aggregate Principal Amount IssuedInterest RateOriginal Issuance DateMaturity Date
2023 Notes$750 3.500%August 10, 2017February 10, 2023
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 nine months ended September 30, 2022 and 2021, 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 September 30,For the Nine Months Ended September 30,
 2022202120222021
Stated interest expense$67 $62 $202 $168 
Amortization of debt issuance costs4 4 11 8 
Net (amortization) accretion of original issue premium/discount(2)(1)(5)(1)
Total interest expense$69 $65 $208 $175 
Cash paid for interest expense$79 $90 $213 $187 
v3.22.2.2
DERIVATIVE INSTRUMENTS (Tables)
 9 Months Ended
Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Derivative Instruments
Certain information related to the Company’s derivative instruments as of September 30, 2022 and December 31, 2021 is presented below.
    
 As of September 30, 2022
Derivative InstrumentNotional
Amount		Maturity DateGross Amount of Recognized AssetsGross Amount of Recognized LiabilitiesBalance Sheet
Location of Net Amounts
Foreign currency forward contractCAD262 10/28/2022$203 $(190)Other assets
Foreign currency forward contractCAD237 10/19/2022178 (171)Other assets
Foreign currency forward contract€135 10/28/2022137 (132)Other assets
Foreign currency forward contract£123 10/28/2022148 (137)Other assets
Foreign currency forward contractNZD72 10/28/202245 (41)Other assets
Foreign currency forward contractCAD2 10/28/20222 (2)Other assets
Foreign currency forward contract€1 10/28/20221 (1)Other assets
Total$714 $(674)
 As of December 31, 2021
Derivative InstrumentNotional
Amount		Maturity DateGross Amount of Recognized AssetsGross Amount of Recognized LiabilitiesBalance Sheet
Location of Net Amounts
Foreign currency forward contractCAD309 1/28/2022$240 $(245)Accounts payable and other liabilities
Foreign currency forward contractCAD209 1/19/2022163 (165)Accounts payable and other liabilities
Foreign currency forward contract€153 1/28/2022172 (174)Accounts payable and other liabilities
Foreign currency forward contract£95 1/28/2022126 (129)Accounts payable and other liabilities
Foreign currency forward contractCAD2 1/28/20221 (1)Accounts payable and other liabilities
Total$702 $(714)
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 nine months ended September 30, 2022 and 2021 is in the following location in the consolidated statements of operations:

For the Three Months Ended September 30,For the Nine Months Ended September 30,
Derivative InstrumentStatement Location2022202120222021
Interest rate swapNet realized gains (losses) from foreign currency and other transactions$— $— $— $— 
Foreign currency forward contractNet realized gains (losses) from foreign currency and other transactions22 17 36 9 
Total$22 $17 $36 $9 

Net unrealized gains (losses) on derivative instruments recognized by the Company for the three and nine months ended September 30, 2022 and 2021 is in the following location in the consolidated statements of operations:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
Derivative InstrumentStatement Location2022202120222021
Interest rate swapNet unrealized gains (losses) from foreign currency and other transactions$— $— $— $1 
Foreign currency forward contractNet unrealized gains (losses) from foreign currency and other transactions31 (2)52 3 
Total$31 $(2)$52 $4 
v3.22.2.2
COMMITMENTS AND CONTINGENCIES (Tables)
 9 Months Ended
Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Loan Commitments Below is a summary of the funded capital and unfunded capital commitments of the SDLP.
 As of
September 30, 2022December 31, 2021
Total capital funded to the SDLP(1)$4,772 $4,168 
Total capital funded to the SDLP by the Company(1)$1,121 $987 
Total unfunded capital commitments to the SDLP(2)$311 $262 
Total unfunded capital commitments to the SDLP by the Company(2)$73 $62 
___________________________________________________________________________
(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.
As of September 30, 2022 and December 31, 2021, 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
 September 30, 2022December 31, 2021
Total revolving and delayed draw loan commitments $3,205 $2,733 
Less: funded commitments(520)(352)
Total unfunded commitments2,685 2,381 
Less: commitments substantially at discretion of the Company— — 
Less: unavailable commitments due to borrowing base or other covenant restrictions— (4)
Total net adjusted unfunded revolving and delayed draw loan commitments$2,685 $2,377 
Schedule of Private Equity Commitments
As of September 30, 2022 and December 31, 2021, the Company was party to subscription agreements to fund equity investments in private equity investment partnerships as follows:
 As of
 September 30, 2022December 31, 2021
Total private equity commitments$116 $111 
Less: funded private equity commitments(66)(68)
Total unfunded private equity commitments50 43 
Less: private equity commitments substantially at discretion of the Company(50)(43)
Total net adjusted unfunded private equity commitments$— $— 
Schedule Of Lease Cost The components of operating lease expense for the three and nine months ended September 30, 2022 and 2021 were as follows:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
2022202120222021
Operating lease costs$2 $3 $7 $8 
Less: sublease income(2)(3)(7)(8)
Total operating lease costs (1)$— $— $— $— 

________________________________________

(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 nine months ended September 30, 2022 and 2021 were as follows:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
2022202120222021
Cash paid for amounts included in the measurement of operating lease liabilities$4 $4 $12 $12 
Operating ROU assets obtained in exchange for operating lease liabilities$3 $2 $6 $6 
Summary of Supplemental Balance Sheet Information
Supplemental balance sheet information as of September 30, 2022 and December 31, 2022 related to operating leases were as follows:

As of
September 30, 2022December 31, 2021
Operating lease ROU assets$21 $27 
Operating lease liabilities$33 $43 
Weighted average remaining lease term3.2 years3.7 years
Weighted average discount rate3.8 %3.1%
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 September 30, 2022:

Amount
2022$4 
202316 
20246 
20256 
20266 
  Total lease payments38 
Less imputed interest(5)
  Total operating lease liabilities$33 
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 September 30, 2022:

Amount
2022$2 
20239 
20244 
20254 
20264 
Total$23 
v3.22.2.2
FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)
 9 Months Ended
Sep. 30, 2022
Fair Value Disclosures [Abstract]  
Schedule of Fair Value Measurement Inputs and Valuation Techniques The following tables summarize the significant unobservable inputs the Company used to value the majority of its investments categorized within Level 3 as of September 30, 2022 and December 31, 2021. The tables are not intended to be all-inclusive, but instead capture the significant unobservable inputs relevant to the Company’s determination of fair values.
 As of September 30, 2022 
Unobservable Input
Asset CategoryFair ValuePrimary Valuation TechniquesInputEstimated Range
Weighted Average(1)
First lien senior secured loans$9,301 Yield analysisMarket yield
5.6% - 23.5%
10.8%
Second lien senior secured loans3,711 Yield analysisMarket yield
10.0% - 23.4%
13.4%
Subordinated certificates of the SDLP1,121 Discounted cash flow analysisDiscount rate
11.0% - 13.4%
12.0%
Senior subordinated loans1,043 Yield analysisMarket yield
7.1% - 14.6%
12.1%
Preferred equity2,052 EV market multiple analysisEBITDA multiple
2.9x - 40.6x
16.1x
Ivy Hill Asset Management, L.P.(2)1,958 Discounted cash flow analysisDiscount rate
11.1% - 23.7%
13.4%
Other equity1,791 EV market multiple analysisEBITDA multiple
2.3x - 55.9x
15.2x
Total investments$20,977 
________________________________________

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

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

 As of December 31, 2021 
Unobservable Input
Asset CategoryFair ValuePrimary Valuation TechniquesInputEstimated Range
Weighted Average(1)
First lien senior secured loans$9,456 Yield analysisMarket yield
2.0% - 16.5%
7.6%
Second lien senior secured loans4,432 Yield analysisMarket yield
6.8% - 22.9%
9.5%
Subordinated certificates of the SDLP987 Discounted cash flow analysisDiscount rate
8.8% - 9.7%
9.3%
Senior subordinated loans889 Yield analysisMarket yield
7.1% - 27.8%
11.5%
Preferred equity1,561 EV market multiple analysisEBITDA multiple
3.2x - 64.4x
16.5x
Ivy Hill Asset Management, L.P.(2)936 Discounted cash flow analysisDiscount rate
9.9% - 27.9%
16.3%
Other equity1,647 EV market multiple analysisEBITDA multiple
4.9x - 32.1x
14.9x
Total investments$19,908 
________________________________________

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

(2)Includes the Company’s equity and subordinated loan investments in IHAM, as applicable.
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
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 September 30, 2022:

 Fair Value Measurements Using
TotalLevel 1Level 2Level 3
Cash and cash equivalents$257 $257 $— $— 
Restricted cash$105 $105 $— $— 
Investments not measured at net asset value$21,334 $55 $302 $20,977 
Investments measured at net asset value(1)5 
 Total investments$21,339 
Derivatives$40 $— $40 $— 
Unfunded revolving and delayed draw loan commitments(2)$(54)$— $— $(54)
________________________________________

(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, 2021:

 Fair Value Measurements Using
TotalLevel 1Level 2Level 3
Cash and cash equivalents$372 $372 $— $— 
Restricted cash$114 $114 $— $— 
Investments not measured at net asset value$20,004 $— $96 $19,908 
Investments measured at net asset value (1)5 
  Total investments$20,009 
Derivatives$(12)$— $(12)$— 
Unfunded revolving and delayed draw loan commitments(2)$(20)$— $— $(20)
________________________________________

(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 Assets Measured on Recurring Basis, Unobservable Input Reconciliation
The following table presents changes in investments that use Level 3 inputs as of and for the three and nine months ended September 30, 2022:
 As of and For the Three Months Ended September 30, 2022
Balance as of June 30, 2022$21,012 
Net realized loss(22)
Net unrealized losses(194)
Purchases2,059 
Sales(1,099)
Repayments(777)
PIK interest and dividends71 
Net accretion of discount on securities3 
Net transfers in and/or out of Level 3(76)
Balance as of September 30, 2022$20,977 


 As of and For the Nine Months Ended September 30, 2022
Balance as of December 31, 2021$19,908 
Net realized gains23 
Net unrealized losses(346)
Purchases6,730 
Sales(3,305)
Repayments(2,183)
PIK interest and dividends218 
Net accretion of discount on securities8 
Net transfers in and/or out of Level 3(76)
Balance as of September 30, 2022$20,977 
The following table presents changes in investments that use Level 3 inputs as of and for the three and nine months ended September 30, 2021:
As of and For the Three Months Ended September 30, 2021
Balance as of June 30, 2021$17,089 
Net realized gains123 
Net unrealized gains11 
Purchases2,517 
Sales(860)
Repayments(1,328)
PIK interest and dividends65 
Net accretion of discount on securities5 
Net transfers in and/or out of Level 344 
Balance as of September 30, 2021$17,666 

As of and For the Nine Months Ended September 30, 2021
Balance as of December 31, 2020$15,506 
Net realized gains258 
Net unrealized gains455 
Purchases8,124 
Sales(3,375)
Repayments(3,537)
PIK interest and dividends180 
Net accretion of discount on securities11 
Net transfers in and/or out of Level 344 
Balance as of September 30, 2021$17,666 
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments
The following are the carrying and fair values of the Company’s debt obligations as of September 30, 2022 and December 31, 2021. 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
 September 30, 2022December 31, 2021
Carrying value(1)Fair value(4)Carrying value(1)Fair value(4)
Revolving Credit Facility$1,787 $1,787 $1,507 $1,507 
Revolving Funding Facility932 932 762 762 
SMBC Funding Facility456 456 401 401 
BNP Funding Facility175 175 — — 
2022 Convertible Notes (principal amount outstanding of $0 and $388, respectively)
— — 388 (2)433 
2024 Convertible Notes (principal amount outstanding of $403)
399 (2)412 395 (2)457 
2023 Notes (principal amount outstanding of $750)
750 (2)747 748 (2)768 
2024 Notes (principal amount outstanding of $900)
898 (2)872 897 (2)952 
March 2025 Notes (principal amount outstanding of $600)
597 (2)567 596 (2)637 
July 2025 Notes (principal amount outstanding of $1,250)
1,258 (2)1,143 1,260 (2)1,297 
January 2026 Notes (principal amount outstanding of $1,150)
1,144 (2)1,048 1,143 (2)1,213 
July 2026 Notes (principal amount outstanding of $1,000)
990 (2)839 988 (2)989 
2027 Notes (principal amount outstanding of $500 and $0, respectively)
494 (2)419 — (2)— 
2028 Notes (principal amount outstanding of $1,250)
1,246 (2)985 1,246 (2)1,248 
2031 Notes (principal amount outstanding of $700)
690 (2)500 689 (2)687 
Total$11,816 (3)$10,882 $11,020 (3)$11,351 
________________________________________

(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 $11,853 and $11,061 as of September 30, 2022 and December 31, 2021, respectively.

(4)The fair value of these debt obligations would be categorized as Level 2 under ASC 820-10.
v3.22.2.2
STOCKHOLDERS’ EQUITY (Tables)
 9 Months Ended
Sep. 30, 2022
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 nine months ended September 30, 2022:

Issuances of Common Stock		Number of Shares IssuedGross ProceedsUnderwriting Fees/Offering ExpensesNet ProceedsAverage Offering Price Per Share(1)
Public offerings20.4$432.0 $22.0 $410.0 $20.13 (2)
“At the market” offerings19.6403.4 4.6 398.8 $20.57 
Total40.0$835.4 $26.6 $808.8 

________________________________________

(1)    Represents the gross offering price per share before deducting underwriting discounts and commissions and offering expenses.

(2)    11.2 and 9.2 of the shares were sold to the underwriters for a price of $21.06 per share and $19.00 per share, respectively, which the underwriters were then permitted to sell at variable prices to the public.
v3.22.2.2
EARNINGS PER SHARE (Tables)
 9 Months Ended
Sep. 30, 2022
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
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 nine months ended September 30, 2022 and 2021:

 For the Three Months Ended September 30,For the Nine Months Ended September 30,
 2022202120222021
Net increase in stockholders’ equity resulting from operations—basic$104 $334 $426 $1,185 
Adjustment for interest expense on 2024 Convertible Notes(1)4 — 13 — 
Net increase in stockholders’ equity resulting from operations—diluted$108 $334 $439 $1,185 
Weighted average shares of common stock outstanding—basic503 453 492 441 
Assumed conversion of 2024 Convertible Notes20 — 20 — 
Weighted average shares of common stock outstanding—diluted523 453 512 441 
Net increase in stockholders’ equity resulting from operations per share—basic$0.21 $0.73 $0.86 $2.68 
Net increase in stockholders’ equity resulting from operations per share—diluted$0.21 $0.73 $0.86 $2.68 
________________________________________
(1)    Includes the impact of income based fees.
v3.22.2.2
DIVIDENDS AND DISTRIBUTIONS (Tables)
 9 Months Ended
Sep. 30, 2022
Equity [Abstract]  
Schedule of Dividends Declared
The following table summarizes the Company’s dividends declared and payable during the nine months ended September 30, 2022 and 2021:

Date declaredRecord datePayment datePer share
amount		Total amount
July 26, 2022September 15, 2022September 30, 2022$0.43 $219 
February 9, 2022September 15, 2022September 30, 20220.03 (1)15 
April 26, 2022June 15, 2022June 30, 20220.42 208 
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 nine months ended September 30, 2022
$1.36 $677 
July 28, 2021September 15, 2021September 30, 2021$0.41 $189 
April 28, 2021June 15, 2021June 30, 20210.40 177 
February 10, 2021March 15, 2021March 31, 20210.40 175 
Total dividends declared and payable for the nine months ended September 30, 2021
$1.21 $541 
___________________________________________________________________________
(1)Represents an additional dividend.
Schedule of Dividends Payable
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 nine months ended September 30, 2022 and 2021, was as follows:
For the Nine Months Ended September 30,
20222021
Shares issued0.6 1.5 
Average issue price per share$20.95 $19.52 
Shares purchased by plan agent to satisfy dividends declared and payable during the period for stockholders 1.6 — 
Average purchase price per share$17.85 $— 
v3.22.2.2
FINANCIAL HIGHLIGHTS (Tables)
 9 Months Ended
Sep. 30, 2022
Investment Company [Abstract]  
Schedule of Financial Highlights
The following is a schedule of financial highlights as of and for the nine months ended September 30, 2022 and 2021:

 As of and For the Nine Months Ended September 30,
Per Share Data:20222021
Net asset value, beginning of period(1)$18.96 $16.97 
Issuances of common stock0.10 0.07 
Net investment income for period(2)1.51 1.13 
Net realized and unrealized gains (losses) for period(2)(0.65)1.56 
Net increase in stockholders’ equity0.96 2.76 
Total distributions to stockholders(3)(1.36)(1.21)
Net asset value at end of period(1)$18.56 $18.52 
Per share market value at end of period$16.88 $20.33 
Total return based on market value(4)(14.44)%27.53 %
Total return based on net asset value(5)2.74 %20.87 %
Shares outstanding at end of period508 461 
Ratio/Supplemental Data: 
Net assets at end of period$9,436 $8,537 
Ratio of operating expenses to average net assets(6)(7)9.77 %4.32 %
Ratio of net investment income to average net assets(6)(8)10.73 %3.13 %
Portfolio turnover rate(6)36 %54 %
_______________________________________________________________________________

(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 dividend of $0.09 per share for the nine months ended September 30, 2022.

(4)For the nine months ended September 30, 2022, the total return based on market value equaled the decrease of the ending market value at September 30, 2022 of $16.88 per share from the ending market value at December 31, 2021 of $21.19 per share plus the declared and payable dividends of $1.36 per share for the nine months ended September 30, 2022, divided by the market value at December 31, 2021. For the nine months ended September 30, 2021, the total return based on market value equaled the increase of the ending market value at September 30, 2021 of $20.33 per share from the ending market value at December 31, 2020 of $16.89 per share plus the declared and payable dividends of $1.21 per share for the nine months ended September 30, 2021, divided by the market value at December 31, 2020. 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 nine months ended September 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 $1.36 per share for the nine months ended September 30, 2022, divided by the beginning net asset value for the period. For the nine months ended September 30, 2021, 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 $1.21 per share for the nine months ended September 30, 2021, 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 nine months ended September 30, 2022 and 2021, the ratio of operating expenses to average net assets consisted of the following:
 For the Nine Months Ended September 30,
20222021
Base management fees3.26 %1.11 %
Income based fees and capital gains incentive fees1.54 %1.42 %
Cost of borrowing4.54 %1.60 %
Other operating expenses0.43 %0.19 %
Total operating expenses9.77 %4.32 %
(8)The ratio of net investment income to average net assets excludes income taxes related to realized gains and losses.
v3.22.2.2
SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Change in Accounting Estimate [Line Items]      
Cash denominated in foreign currencies $ 257   $ 372
Accounting Standards Update 2020-06 | Cumulative Effect, Period of Adoption, Adjustment      
Change in Accounting Estimate [Line Items]      
Net assets   $ 403  
Denominated in foreign currencies      
Change in Accounting Estimate [Line Items]      
Cash denominated in foreign currencies $ 29   $ 62
Minimum      
Change in Accounting Estimate [Line Items]      
Lease term 1 year    
Maximum      
Change in Accounting Estimate [Line Items]      
Lease term 4 years    
v3.22.2.2
SIGNIFICANT ACCOUNTING POLICIES - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Sep. 30, 2021
Dec. 31, 2020
Accounting Policies [Abstract]        
Cash and cash equivalents $ 257 $ 372    
Restricted cash 105 114    
Total cash, cash equivalents and restricted cash shown in the consolidated statement of cash flows $ 362 $ 486 $ 1,213 $ 326
v3.22.2.2
AGREEMENTS - Narrative (Details)
$ in Millions
 3 Months Ended 9 Months Ended 216 Months Ended
Jun. 21, 2019
Jun. 20, 2019
Sep. 30, 2022
USD ($)
qtr
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
qtr
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
qtr
Dec. 31, 2021
USD ($)
Investment Company, Financial Highlights [Line Items]                
Number of quarters considered in base management fee calculation | qtr     2   2   2  
Capital gains incentive fees payable     $ 72   $ 72   $ 72 $ 161
Administrative fees     3 $ 4 9 $ 11    
Accounts payable and other liabilities     139   $ 139   139 111
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     72   $ 72   72  
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%              
Administration Agreement | Controlled Affiliate                
Investment Company, Financial Highlights [Line Items]                
Termination notice period 60 days              
Accounts payable and other liabilities     3   $ 3   3 $ 4
Capital Gains Incentive Fees | Controlled Affiliate                
Investment Company, Financial Highlights [Line Items]                
Due to related party     $ 0 $ 0 $ 0 $ 0 $ 0  
v3.22.2.2
AGREEMENTS - Schedule of Base Management Fees, Income Based Fees, and Capital Gains Incentive Fees (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Investment Company [Abstract]        
Base management fees $ 78 $ 65 $ 226 $ 184
Income based fees 63 53 171 158
Capital gains incentive fees $ (37) $ 30 $ (64) $ 133
v3.22.2.2
INVESTMENTS - Schedule of Investments (Details)
$ in Millions
 9 Months Ended 12 Months Ended
Sep. 30, 2022
USD ($)
borrower
Dec. 31, 2021
USD ($)
borrower
Schedule of Investments [Line Items]    
Amortized Cost $ 21,468.5 $ 19,810.0
Fair Value $ 21,338.5 $ 20,009.5
Loans on non-accrual status, as a percent of total investments at amortized cost 1.60% 0.80%
Loans on non-accrual status, as a percent of total investments at fair value 0.90% 0.50%
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]    
Number of borrowers | borrower 21 19
West | Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 34.50% 31.20%
West | Senior Direct Lending Program | Investments, At Fair Value | Customer Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 5.30% 4.90%
Midwest | Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 25.00% 27.90%
Southeast | Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 17.80% 17.20%
Mid-Atlantic | Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 13.10% 14.50%
Northeast | Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 4.60% 4.80%
International | Investments, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 5.00% 4.40%
Software & Services    
Schedule of Investments [Line Items]    
Amortized Cost $ 4,924.8 $ 4,308.2
Fair Value $ 4,816.4 $ 4,378.1
Software & Services | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 22.50% 21.90%
Diversified Financials    
Schedule of Investments [Line Items]    
Amortized Cost $ 2,512.7 $ 1,363.8
Fair Value $ 2,631.3 $ 1,505.3
Diversified Financials | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 12.30% 7.50%
Health Care Services    
Schedule of Investments [Line Items]    
Amortized Cost $ 2,231.9 $ 2,133.9
Fair Value $ 2,155.8 $ 2,157.1
Health Care Services | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 10.10% 10.80%
Commercial & Professional Services    
Schedule of Investments [Line Items]    
Amortized Cost $ 1,768.3 $ 1,820.0
Fair Value $ 1,746.8 $ 1,833.4
Commercial & Professional Services | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 8.20% 9.20%
Investment Funds and Vehicles    
Schedule of Investments [Line Items]    
Amortized Cost $ 1,152.9 $ 1,020.0
Fair Value $ 1,166.2 $ 1,032.4
Investment Funds and Vehicles | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 5.50% 5.20%
Insurance Services    
Schedule of Investments [Line Items]    
Amortized Cost $ 1,101.3 $ 1,144.0
Fair Value $ 1,081.3 $ 1,167.3
Insurance Services | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 5.10% 5.80%
Power Generation    
Schedule of Investments [Line Items]    
Amortized Cost $ 953.2 $ 877.8
Fair Value $ 1,007.2 $ 898.9
Power Generation | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 4.70% 4.50%
Consumer Services | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 4.00% 3.90%
Capital Goods    
Schedule of Investments [Line Items]    
Amortized Cost $ 818.9 $ 945.3
Fair Value $ 854.0 $ 957.0
Capital Goods | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 4.00% 4.80%
Consumer Durables & Apparel    
Schedule of Investments [Line Items]    
Amortized Cost $ 925.8 $ 918.7
Fair Value $ 838.8 $ 874.4
Consumer Durables & Apparel | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 3.90% 4.40%
Automobiles & Components    
Schedule of Investments [Line Items]    
Amortized Cost $ 736.4 $ 933.1
Fair Value $ 674.5 $ 910.5
Automobiles & Components | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 3.20% 4.60%
Food & Beverage    
Schedule of Investments [Line Items]    
Amortized Cost $ 508.5 $ 446.6
Fair Value $ 508.8 $ 445.3
Food & Beverage | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 2.40% 2.20%
Pharmaceuticals, Biotechnology & Life Sciences    
Schedule of Investments [Line Items]    
Amortized Cost $ 465.3 $ 394.2
Fair Value $ 490.1 $ 386.8
Pharmaceuticals, Biotechnology & Life Sciences | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 2.30% 1.90%
Retailing and Distribution | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 2.20% 2.80%
Media & Entertainment    
Schedule of Investments [Line Items]    
Amortized Cost $ 442.2 $ 434.7
Fair Value $ 468.8 $ 448.2
Media & Entertainment | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 2.20% 2.20%
Other | Investments, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Composition, percent of fair value 7.40% 8.30%
First lien senior secured loans    
Schedule of Investments [Line Items]    
Amortized Cost $ 9,821.0 $ 9,583.0
Fair Value 9,509.0 9,459.0
Second lien senior secured loans    
Schedule of Investments [Line Items]    
Amortized Cost 4,011.0 4,614.0
Fair Value 3,797.0 4,524.0
Subordinated certificates of the SDLP    
Schedule of Investments [Line Items]    
Amortized Cost 1,121.0 987.0
Fair Value 1,121.0 987.0
Senior subordinated loans    
Schedule of Investments [Line Items]    
Amortized Cost 1,102.0 896.0
Fair Value 1,051.0 890.0
Preferred equity    
Schedule of Investments [Line Items]    
Amortized Cost 2,071.0 1,547.0
Fair Value 2,052.0 1,561.0
Ivy Hill Asset Management, L.P.    
Schedule of Investments [Line Items]    
Amortized Cost 1,809.0 781.0
Fair Value 1,958.0 936.0
Other equity    
Schedule of Investments [Line Items]    
Amortized Cost 1,534.0 1,402.0
Fair Value 1,851.0 1,652.0
Unitranche loans    
Schedule of Investments [Line Items]    
Amortized Cost 5,127.0 5,210.0
Fair Value $ 4,998.0 $ 5,163.0
v3.22.2.2
INVESTMENTS - Senior Direct Lending Program (Details)
$ in Millions
Sep. 30, 2022
USD ($)
loan
Dec. 31, 2021
USD ($)
loan
Schedule of Investments [Line Items]    
Amortized Cost $ 21,468.5 $ 19,810.0
Total investments at fair value 21,338.5 20,009.5
Subordinated certificates of the SDLP    
Schedule of Investments [Line Items]    
Amortized Cost 1,121.0 987.0
Total investments at fair value $ 1,121.0 $ 987.0
Yield on investment, at cost 13.50% 13.50%
Yield on investment, at fair value 13.50% 13.50%
Number of loans on non-accrual status | loan 1 0
Subordinated certificates of the SDLP | London Interbank Offered Rate (LIBOR)    
Schedule of Investments [Line Items]    
Interest rate, spread 8.00%  
Subordinated certificates of the SDLP | Ares Capital Corporation    
Schedule of Investments [Line Items]    
Ownership percentage of outstanding SDLP Certificates 87.50% 87.50%
Subordinated certificates of the SDLP | 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 $ 350.0  
Capital available to the SDLP 6,150.0 $ 6,150.0
Senior Direct Lending Program | Ares Capital Corporation    
Schedule of Investments [Line Items]    
Capital available to the SDLP $ 1,444.0 $ 1,444.0
v3.22.2.2
INVESTMENTS - Summary of Funded Capital and Unfunded Capital Commitments (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Funded commitments    
Schedule of Investments [Line Items]    
Other commitment $ 520 $ 352
Unfunded commitments    
Schedule of Investments [Line Items]    
Other commitment 2,685 2,381
Senior Direct Lending Program | Funded commitments    
Schedule of Investments [Line Items]    
Other commitment 4,772 4,168
Senior Direct Lending Program | Funded commitments | Ares Capital Corporation    
Schedule of Investments [Line Items]    
Other commitment 1,121 987
Senior Direct Lending Program | Unfunded commitments    
Schedule of Investments [Line Items]    
Other commitment 311 262
Senior Direct Lending Program | Unfunded commitments | Ares Capital Corporation    
Schedule of Investments [Line Items]    
Other commitment $ 73 $ 62
v3.22.2.2
INVESTMENTS - Interest Income and Capital Structuring Service and Other Fees Earned (Details) - Subordinated certificates of the SDLP - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Schedule of Investments [Line Items]        
Interest income $ 37 $ 33 $ 105 $ 106
Capital structuring service fees $ 7 $ 7 $ 15 $ 13
v3.22.2.2
INVESTMENTS - Summary of the SDLP Portfolio (Details)
$ in Millions
Sep. 30, 2022
USD ($)
borrower
Dec. 31, 2021
USD ($)
borrower
Unfunded commitments    
Schedule of Investments [Line Items]    
Commitments to fund delayed draw loans $ 2,685.0 $ 2,381.0
Senior Direct Lending Program    
Schedule of Investments [Line Items]    
Number of borrowers in the SDLP | borrower 21 19
Senior Direct Lending Program | Unfunded commitments    
Schedule of Investments [Line Items]    
Commitments to fund delayed draw loans $ 311.0 $ 262.0
Senior Direct Lending Program | First lien senior secured loans    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4,798.0 4,194.0
Senior Direct Lending Program | Unitranche loans    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3,737.0 2,908.0
Investment, Identifier [Axis]: 2U, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 54.6 [1],[2],[3] 55.0 [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 7.6 [2],[7] 111.4 [5],[8]
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 9.0 [1],[2] 9.6 [4],[5]
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 3.9 [1],[2] 2.3 [4],[5]
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 125.6 [2] 115.3 [4],[5]
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] 0.9 [4],[5],[10]
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 [1],[2] 26.9  
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 [1],[2] 0.4  
Investment, Identifier [Axis]: AI Fire Buyer, Inc. and AI Fire Parent LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 44.0  
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 [1],[2] 9.9  
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 [1],[2] 9.6  
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 13.3 [1],[2] 13.5 [4],[5]
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 [2],[7] 7.4  
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   8.6
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 19.3  
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 14.8 [1],[2] 13.3 [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 8.5 [1],[2] 20.2 [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 [1],[2] 5.6  
Investment, Identifier [Axis]: AQ Sunshine, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.4 [1],[2],[11] 0.3 [4],[5],[12]
Investment, Identifier [Axis]: ARES 2007-3R, Subordinated notes    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [3] 20.0  
Investment, Identifier [Axis]: ASP Dream Acquisition Co LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.0  
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 [1],[2] 0.1  
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 [4],[5]   46.3
Investment, Identifier [Axis]: ASP-r-pac Acquisition Co LLC and ASP-r-pac Holdings LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.2
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 33.1 [1],[2] 33.3 [4]
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 3.2  
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.1 [1],[2],[11] 8.1 [4],[5],[12]
Investment, Identifier [Axis]: ATI Restoration, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   2.5
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 51.4 [1],[2] 49.5 [4],[5]
Investment, Identifier [Axis]: Absolute Dental Group LLC and Absolute Dental Equity, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.7 [1],[2] 4.0 [4],[5]
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 46.2 [1],[2],[3] 13.7 [4],[5]
Investment, Identifier [Axis]: Abzena Holdings, Inc. and Astro Group Holdings Ltd., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 13.9 [1],[2],[3] 30.5 [4],[5]
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 [2],[9] 0.5  
Investment, Identifier [Axis]: Advarra Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 4.1  
Investment, Identifier [Axis]: Aero Operating LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 36.3 [1],[2] 36.6 [4]
Investment, Identifier [Axis]: Aero Operating LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.2 [1],[2] 1.2 [4],[5]
Investment, Identifier [Axis]: AffiniPay Midco, LLC and AffiniPay Intermediate Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   64.0
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 [1],[2] 120.9  
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 [1],[2] 63.5  
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 55.0 [1],[2] 27.5 [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 Holdings I, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 29.0 [2] 29.2
Investment, Identifier [Axis]: Alcami Corporation and ACM Holdings I, LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 77.5 [2] 77.5 [5]
Investment, Identifier [Axis]: Alera Group, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 75.8 [1],[2] 96.6 [4],[5]
Investment, Identifier [Axis]: Alteon Health, LLC. First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   2.8
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 [1],[2],[3] 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 2.3 [2] 1.0 [5]
Investment, Identifier [Axis]: Anaplan, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 21.8  
Investment, Identifier [Axis]: Anaqua Parent Holdings, Inc. & Astorg VII Co-Invest Anaqua, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans   4.7
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 [2] 4.0  
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 1.0 [1],[2] 16.0 [4],[5]
Investment, Identifier [Axis]: Applied Technical Services, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.8  
Investment, Identifier [Axis]: Applied Technical Services, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 0.7  
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 5.7 [1],[2] 13.4 [4],[5]
Investment, Identifier [Axis]: Apptio, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 42.2 [1],[2] 62.2 [4]
Investment, Identifier [Axis]: Apptio, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.7 [1],[2] 1.7 [4],[5]
Investment, Identifier [Axis]: Ardonagh Midco 2 plc and Ardonagh Midco 3 plc, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 90.0 [1],[2],[3] 69.5 [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 69.4 [1],[2],[3] 14.5 [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 [4],[5],[6]   7.5
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 6.4 [1],[2],[3] 111.2 [4],[5],[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],[11] 1.3 [5],[6],[10]
Investment, Identifier [Axis]: Ares IIIR/IVR CLO Ltd., Subordinated notes    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [6]   20.0
Investment, Identifier [Axis]: Argenbright Holdings V, LLC and Amberstone Security Group Limited, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 21.0  
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],[3] 4.4  
Investment, Identifier [Axis]: Argenbright Holdings V, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   21.1
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] 27.6 [4],[5]
Investment, Identifier [Axis]: Arrowhead Holdco Company and Arrowhead GS Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 13.7 [1],[2],[11] 3.7 [4],[5],[12]
Investment, Identifier [Axis]: Atlas Intermediate III, L.L.C., First lien senior secured loan    
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 loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 2.1 [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 [1],[2] 0.2  
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 [1],[2] 0.1  
Investment, Identifier [Axis]: Automotive Keys Group, LLC and Automotive Keys Investor, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 10.0 [4],[5]
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 9.3 [1],[2] 6.6 [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 37.5 [2] 35.6 [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 [1],[2],[9] 9.2  
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 [1],[2] 0.2  
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] 11.8 [4],[5]
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 [4],[5]   21.4
Investment, Identifier [Axis]: AxiomSL Group, Inc. and Calypso Group, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 21.2  
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 [1],[2] 6.0  
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 4.9 [2] 4.5 [5]
Investment, Identifier [Axis]: Badger Sportswear Acquisition, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 56.8 [1],[2] 56.8 [4],[5]
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 42.9 [1],[2] 39.1 [4],[5]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   6.7
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],[2] 9.1  
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 1.0 [1],[2] 7.7 [4],[5]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC and Banyan Software, LP, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   5.0
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],[2] 0.9  
Investment, Identifier [Axis]: Beacon Pointe Harmony, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 16.6 [1],[2],[3] 14.5 [4],[6]
Investment, Identifier [Axis]: Bearcat Buyer, Inc. and Bearcat Parent, Inc., Second lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   69.5
Investment, Identifier [Axis]: Bearcat Buyer, Inc. and Bearcat Parent, Inc., Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   12.7
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.3 [2],[11] 0.0 [5],[12]
Investment, Identifier [Axis]: Belfor Holdings, Inc., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[11] 2.8  
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 23.8 [1],[2] 23.4 [4],[5]
Investment, Identifier [Axis]: Benefytt Technologies, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 5.0  
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.9 [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 [4],[5]   0.3
Investment, Identifier [Axis]: Birch Permian, LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   75.7
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 [1],[2] 1.0  
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 [1],[2] 1.7  
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   15.5
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 15.9  
Investment, Identifier [Axis]: Borrower R365 Holdings LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.4  
Investment, Identifier [Axis]: Bottomline Technologies, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 33.0  
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 38.9 [1],[2] 39.4 [4]
Investment, Identifier [Axis]: Bragg Live Food Products, LLC and SPC Investment Co., L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.3 [1],[2] 1.7 [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 [1],[2],[9] 4.8  
Investment, Identifier [Axis]: Businessolver.com, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 14.4 [1],[2] 70.2 [4],[5]
Investment, Identifier [Axis]: CCS-CMGC Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 33.7 [2],[9] 34.0
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 3.8 [1],[2] 3.8 [4],[5]
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., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 24.6  
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 0.9  
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 39.0 [1],[2] 39.4 [4]
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 26.6 [1],[2] 49.2 [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 [1],[2] 0.1  
Investment, Identifier [Axis]: CVP Holdco, Inc. and OMERS Wildcats Investment Holdings LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   0.4
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 31.2  
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   31.4
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.9 [1],[2] 9.8 [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 9.7 [1],[2] 12.0 [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 7.8 [1],[2] 7.9 [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 5.0 [1],[2] 4.0 [4]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 11.6 [1],[2],[11] 7.9 [4],[5],[12]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.9 [1],[2] 3.0 [4]
Investment, Identifier [Axis]: Cadence Aerospace, LLC, First lien senior secured revolving loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.7
Investment, Identifier [Axis]: Calyx Energy III, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 60.6  
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 0.3 [1],[2] 0.3 [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 [4],[5],[12]   2.3
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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 14.1  
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 2.2 [1],[2] 0.6 [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 64.3 [1],[2] 59.9 [4],[5]
Investment, Identifier [Axis]: Center for Autism and Related Disorders, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.8 [2],[7] 6.8 [5],[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 [2],[7] 0.2  
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 74.2 [1],[2] 67.9 [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 7.4 [1],[2] 2.3 [4],[5]
Investment, Identifier [Axis]: Chariot Buyer LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.5 [2] 0.2 [5]
Investment, Identifier [Axis]: Chariot Buyer LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   2.5
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, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 63.1 [1],[2] 63.1 [4],[5]
Investment, Identifier [Axis]: Cipriani USA, Inc. and Cipriani Group Holding S.A.R.L., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 68.2 [1],[2] 68.2 [4],[5]
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 30.0 [1],[2] 15.2 [4],[5]
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 20.0 [1],[2] 15.5 [4],[5]
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 15.5 [1],[2] 20.0 [4],[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 15.2 [1],[2] 3.0 [4],[5]
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 4.9 [1],[2] 4.9 [4],[5]
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 3.0 [1],[2] 30.0 [4],[5]
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 15.8 [1] 29.1 [4],[5]
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],[2] 14.5  
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 2.5 [1],[2] 0.6 [4],[5]
Investment, Identifier [Axis]: Commercial Trailer Leasing, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 66.0 [1],[2] 92.8 [4],[5]
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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 10.7  
Investment, Identifier [Axis]: Compex Legal Services, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 2.0  
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.3  
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   2.6
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, 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]: Comprehensive EyeCare Partners, LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.6
Investment, Identifier [Axis]: Comprehensive EyeCare Partners, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.3 [1],[2] 0.3 [4],[5]
Investment, Identifier [Axis]: Concert Golf Partners Holdco LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.4 [1],[2] 0.1 [4],[5]
Investment, Identifier [Axis]: Conservice Midco, LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2] 0.0  
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[6]   27.8
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   32.9
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   3.9
Investment, Identifier [Axis]: Consilio Midco Limited and Consilio Investment Holdings, L.P., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   11.3
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 [1],[2],[3] 11.7  
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 [1],[2],[3] 15.0  
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 [2],[3] 24.7  
Investment, Identifier [Axis]: Consilio Midco Limited, Compusoft US LLC, and Consilio Investment Holdings, L.P., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 60.0  
Investment, Identifier [Axis]: Continental Acquisition Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 36.2 [1],[2] 36.5 [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 5.4 [1],[2] 33.2 [4],[5]
Investment, Identifier [Axis]: Continental Cafe, 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]   15.7
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 [1],[2] 0.1  
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 [1],[2],[3] 63.0  
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   2.7
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 2.7  
Investment, Identifier [Axis]: Convey Health Solutions, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 0.1  
Investment, Identifier [Axis]: CoreLogic, Inc. and T-VIII Celestial Co-Invest LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 4.1  
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., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 16.5  
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 [1],[2],[3] 4.4  
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 [1],[2],[3] 1.1  
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 [1],[2],[3] 6.3  
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[6]   6.3
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[6]   4.4
Investment, Identifier [Axis]: Cority Software Inc., IQS, Inc. and Cority Parent, Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   1.1
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 [2],[11] 21.9  
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]
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 [1],[2] 8.7  
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 [1],[2] 1.5  
Investment, Identifier [Axis]: Coyote Buyer, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.8  
Investment, Identifier [Axis]: Coyote Buyer, 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]: Cozzini Bros., Inc. and BH-Sharp Holdings LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   12.4
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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 24.6  
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 152.0 [1],[2],[3],[13] 146.4 [4],[5],[6],[14]
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 165.3 [1] 166.7 [4]
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.5 [1],[2] 4.3 [4],[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 4.3 [1],[2] 5.0 [4]
Investment, Identifier [Axis]: DFS Holding Company, Inc., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   0.7
Investment, Identifier [Axis]: DRS Holdings III, Inc. and DRS Holdings I, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 28.9 [1],[2] 29.8 [4]
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] 46.7 [4]
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] 11.9 [4],[5]
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[12]   0.3
Investment, Identifier [Axis]: DTI Holdco, Inc. and OPE DTI Holdings, Inc., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[12]   4.8
Investment, Identifier [Axis]: Datix Bidco Limited, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [2],[3] 0.1 [5],[6]
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 [2] 8.8  
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 148.9 [1],[2] 148.5 [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 14.1 [1],[2] 2.4 [4],[5]
Investment, Identifier [Axis]: Denali Holdco LLC and Denali Apexco LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.2 [1],[2] 37.3 [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 [1],[2] 0.1  
Investment, Identifier [Axis]: Diligent Corporation and Diligent Preferred Issuer, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   33.0
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 [1],[2] 36.0  
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 2.0 [1],[2] 8.9 [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] 11.4 [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] 2.0 [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],[2],[11] 1.1  
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., Common units    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   600.0
Investment, Identifier [Axis]: Display Holding Company, Inc., Saldon Holdings, Inc. and Fastsigns Holdings Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 15.9 [1],[2] 16.0 [4]
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
Investment, Identifier [Axis]: Dye & Durham Corporation, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 39.2 [1],[2],[3] 72.0 [4],[5],[6]
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 25.7 [1],[2] 25.7 [4]
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] 1.4  
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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.5 [1],[2] 0.2 [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 0.2 [1],[2] 0.3 [4],[5]
Investment, Identifier [Axis]: EP Wealth Advisors, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.7 [1],[2] 0.2 [4],[5]
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] 30.5 [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 0.6 [1],[2],[11] 0.9 [4],[5],[12]
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 [1],[2] 6.8  
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 28.8 [2],[7] 26.3 [5],[8]
Investment, Identifier [Axis]: Eckler Industries, Inc. and Eckler Purchaser LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 15.9 [2],[7] 6.7 [5],[8]
Investment, Identifier [Axis]: Elemica Parent, Inc. & EZ Elemica Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   62.0
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 [1],[2] 61.5  
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 5.8 [1],[2] 20.5 [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]   2.3
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] 3.1  
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 [1] 1.0  
Investment, Identifier [Axis]: Elevation Services Parent Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.8 [1],[2] 8.7 [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 10.3 [1],[2] 0.3 [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 [4],[5]   5.2
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 [1],[2],[11] 1.4  
Investment, Identifier [Axis]: Emergency Communications Network, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 47.8 [1],[2] 46.0 [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 [1],[2] 6.7  
Investment, Identifier [Axis]: Ensemble RCM, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 2.5  
Investment, Identifier [Axis]: EpiServer Inc. and Episerver Sweden Holdings AB, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   4.6
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 [2] 5.2  
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 0.1 [1],[2] 6.0 [5]
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] 0.1 [4],[5]
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 78.3  
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 [4],[5]   72.7
Investment, Identifier [Axis]: Essential Services Holding Corporation and OMERS Mahomes Investment Holdings LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 48.3 [1],[2] 80.4 [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 [1],[2] 13.8  
Investment, Identifier [Axis]: Evolent Health LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 7.8  
Investment, Identifier [Axis]: Excelligence Holdings Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 9.1 [1],[2] 9.6 [4],[5]
Investment, Identifier [Axis]: Explorer Investor, Inc, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.2  
Investment, Identifier [Axis]: ExtraHop Networks, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   16.6
Investment, Identifier [Axis]: ExtraHop Networks, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   1.1
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] 16.6  
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] 3.0  
Investment, Identifier [Axis]: FM:Systems Group, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   3.2
Investment, Identifier [Axis]: FM:Systems Group, 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]: FM:Systems Group, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.4 [1],[2] 1.4 [4],[5]
Investment, Identifier [Axis]: FM:Systems Group, 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]: 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 [5]
Investment, Identifier [Axis]: Faraday&Future Inc., FF Inc., Faraday SPE, LLC and Faraday Future Intelligent Electric Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   80.3
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 29.7 [1],[2] 30.0 [4]
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]
Investment, Identifier [Axis]: Flinn Scientific, Inc. and WCI-Quantum Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.1 [1],[2],[11] 4.9 [4],[5]
Investment, Identifier [Axis]: Florida Food Products, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 14.3 [1],[2] 4.3 [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 [1],[2] 0.4  
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]: Flow Control Solutions, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   10.8
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   18.7
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 23.2  
Investment, Identifier [Axis]: Forescout Technologies, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 12.3  
Investment, Identifier [Axis]: Foundation Consumer Brands, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 13.0 [1],[2] 24.9 [4]
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 133.0 [1],[2] 169.5 [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 [1],[2] 33.2  
Investment, Identifier [Axis]: Foundation Risk Partners, Corp., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 1.1  
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   14.9
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies Parent, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 14.7  
Investment, Identifier [Axis]: Frontline Technologies Group Holding LLC, Frontline Technologies Blocker Buyer, Inc., Frontline Technologies Holdings, LLC and Frontline Technologies 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]: 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 114.1 [1],[2] 114.0 [4],[5]
Investment, Identifier [Axis]: GI Ranger Intermediate LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 40.2 [1],[2] 35.1 [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],[2] 0.4  
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 [1],[2],[3] 27.3  
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 31.7 [1],[2] 59.1 [4],[5]
Investment, Identifier [Axis]: Galway Borrower LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 4.2  
Investment, Identifier [Axis]: Garden Fresh Restaurant Corp. and GFRC Holdings LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[8]   21.6
Investment, Identifier [Axis]: Garden Fresh Restaurant Corp. and GFRC Holdings LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[8]   7.5
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   9.1
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 [1],[2] 9.0  
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 0.2 [2] 0.2 [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 [2] 1.5 [5]
Investment, Identifier [Axis]: Genesis Acquisition Co. and Genesis Ultimate Holding Co., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   21.1
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 [2] 32.4  
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 21.1 [1],[2] 32.4 [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 7.5 [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 [1],[2],[9] 10.8  
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 [1],[2],[9] 25.2  
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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 22.3 [4],[5]
Investment, Identifier [Axis]: Gotham Greens Holdings, PBC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 17.7  
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 [1],[2] 0.2  
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 [1],[2] 0.1  
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 [1],[2] 0.1  
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 [1],[2] 0.1  
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 [2] 43.5  
Investment, Identifier [Axis]: Green Street Parent, LLC and Green Street Intermediate Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2] 23.7 [4],[5]
Investment, Identifier [Axis]: H-Food Holdings, LLC and Matterhorn Parent, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 26.4 [2],[9] 75.0 [4],[5]
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 [2],[9] 3.3  
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 [1],[2],[9] 0.1  
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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 60.7 [1],[2] 61.0 [4]
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 0.1 [1],[2] 0.1 [4],[5]
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 4.7 [1],[2] 2.6 [4],[5]
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 2.3 [1],[2] 0.5 [4],[5]
Investment, Identifier [Axis]: Halcon Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 10.5 [2] 19.0 [5]
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 23.5 [1],[2] 22.7 [4],[5]
Investment, Identifier [Axis]: Harvey Tool Company, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   5.9
Investment, Identifier [Axis]: HealthEdge Software, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 84.8 [1],[2] 79.2 [4],[5]
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] 40.9 [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 [1],[2] 106.5  
Investment, Identifier [Axis]: Heelstone Renewable Energy, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   39.0
Investment, Identifier [Axis]: High Street Buyer, Inc. and High Street Holdco LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 34.6 [1],[2] 55.0 [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 12.3 [1],[2] 10.4 [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 [1],[2] 6.9  
Investment, Identifier [Axis]: HighTower Holding, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[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    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[9] 12.0  
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 1.0 [2],[11] 5.9 [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, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[11] 0.7  
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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 60.5 [1],[2] 105.8 [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 7.0 [1],[2] 1.6 [4],[5]
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 97.1 [2] 90.2 [5]
Investment, Identifier [Axis]: IQN Holding Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 23.6  
Investment, Identifier [Axis]: IRI Holdings, Inc., IRI Group Holdings, Inc. and IRI Parent, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans   42.3
Investment, Identifier [Axis]: IRI Holdings, Inc., IRI Group Holdings, Inc. and IRI Parent, L.P., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   86.8
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. and ISQ Hawkeye Holdings, LLC , First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 12.5  
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 38.2  
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.1  
Investment, Identifier [Axis]: ITI Holdings, Inc., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 0.7  
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    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 117.0 [1],[2] 103.3 [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 5.0 [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 1.3 [1],[2] 1.3 [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]   5.0
Investment, Identifier [Axis]: Imprivata, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 16.1  
Investment, Identifier [Axis]: Inmar, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 28.3 [1],[2] 28.3 [4],[5]
Investment, Identifier [Axis]: Insightful Science, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.5
Investment, Identifier [Axis]: Insightful Science, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   16.2
Investment, Identifier [Axis]: Insightful Science, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   7.9
Investment, Identifier [Axis]: Insightful Science, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   7.6
Investment, Identifier [Axis]: Insightful Science, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   39.2
Investment, Identifier [Axis]: Instituto de Banca y Comercio, Inc. & Leeds IV Advisors, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   4.0
Investment, Identifier [Axis]: IntraPac International LLC and IntraPac Canada Corporation, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[6]   14.8
Investment, Identifier [Axis]: IntraPac International LLC and IntraPac Canada Corporation, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   10.8
Investment, Identifier [Axis]: IntraPac International LLC and IntraPac Canada Corporation, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   6.2
Investment, Identifier [Axis]: Ivy Hill Asset Management, L.P., Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 436.1 [1],[3] 16.0 [4],[6]
Investment, Identifier [Axis]: JDC Healthcare Management, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 39.7 [2],[7] 37.2 [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 4.7 [2],[7] 4.4 [5],[8]
Investment, Identifier [Axis]: Javlin Three LLC, Javlin Four LLC, and Javlin Five LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 15.4 [2],[3],[7] 15.7 [5],[6],[8]
Investment, Identifier [Axis]: Jenny C Acquisition, Inc., Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.5 [2] 1.4 [5]
Investment, Identifier [Axis]: Jim N Nicks Management, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   14.7
Investment, Identifier [Axis]: Jim N Nicks Management, 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]: Johnnie-O Inc. and Johnnie-O Holdings Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 19.2  
Investment, Identifier [Axis]: Joyce Lane Capital LLC and Joyce Lane Financing SPV LLC (fka Ciena Capital LLC), First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[6]   0.3
Investment, Identifier [Axis]: K2 Insurance Services, LLC and K2 Holdco LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 50.6 [1],[2] 0.6 [4],[5]
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 2.3 [1],[2] 51.0 [4]
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 0.2 [1],[2] 0.2 [4],[5]
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 [1],[2] 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]   0.8
Investment, Identifier [Axis]: KC Culinarte Intermediate, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 28.9 [1] 29.1 [4]
Investment, Identifier [Axis]: KC Culinarte Intermediate, LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 35.7 [1],[2] 35.7 [4],[5]
Investment, Identifier [Axis]: KNPC HoldCo, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 5.6  
Investment, Identifier [Axis]: KPS Global LLC and Cool Group LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 12.6 [1],[2] 12.6 [4]
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 3.4 [1],[2] 3.4 [4]
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 [1],[2] 167.0  
Investment, Identifier [Axis]: Kellermeyer Bergensons Services, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 81.9 [1],[2] 60.8 [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] 21.1 [4],[5]
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 40.7 [1],[2] 41.1 [4]
Investment, Identifier [Axis]: KeyStone Sub-debt HoldCo, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 58.5 [2] 54.3 [5]
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 [2] 7.2 [5]
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 [1],[2] 8.5  
Investment, Identifier [Axis]: LS DE LLC and LM LSQ Investors LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[6]   37.0
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 [2],[3] 3.0  
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 37.0 [2],[3] 3.0 [5],[6]
Investment, Identifier [Axis]: LSP Holdco, LLC and ZBS Mechanical Group Co-Invest Fund 2, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 12.7 [1],[2] 6.9 [4],[5]
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 [1],[2] 6.3  
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 [1],[2] 5.0  
Investment, Identifier [Axis]: Laboratories Bidco LLC and Laboratories Topco LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   21.6
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 [1],[2] 23.2  
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 16.7 [1] 25.5 [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 4.4 [1],[2] 0.1 [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 0.1 [1],[2] 10.7 [4],[5]
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 [1],[2] 3.9  
Investment, Identifier [Axis]: Lakers Buyer, Inc. and Lakers Parent LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   51.2
Investment, Identifier [Axis]: Lakers Buyer, Inc. and Lakers Parent LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   3.6
Investment, Identifier [Axis]: Lakers Buyer, Inc. and Lakers Parent LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   40.1
Investment, Identifier [Axis]: Largest Portfolio Company Investment | Senior Direct Lending Program    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 380.0 342.0
Investment, Identifier [Axis]: LeanTaas Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 30.5  
Investment, Identifier [Axis]: Len the Plumber, LLC, LTP Neffsville, LLC, LTP of NJ, LLC, and LTP LSI, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   9.1
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]: Lew's Intermediate Holdings, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.3 [2] 1.8 [5]
Investment, Identifier [Axis]: Lido Advisors, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 0.2  
Investment, Identifier [Axis]: Lifescan Global Corporation, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2] 14.7  
Investment, Identifier [Axis]: Lifescan Global Corporation, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2] 0.2  
Investment, Identifier [Axis]: Lower ACS, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 5.4  
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 12.1 [1],[2] 11.7 [4],[5]
Investment, Identifier [Axis]: MB Aerospace Holdings II Corp., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 68.4 [1],[2] 68.5 [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]: MCH Holdings, Inc., MC Acquisition Holdings I, LLC and Privia Health Group, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   110.2
Investment, Identifier [Axis]: MMIT Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   18.2
Investment, Identifier [Axis]: MMIT Holdings, 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]: MMIT Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.8 [1],[2] 13.7 [4],[5]
Investment, Identifier [Axis]: MMIT Holdings, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.8 [1] 0.6 [4],[5]
Investment, Identifier [Axis]: MMax Investment Partners, Inc. (d/b/a Professional Fighters League) and PFL MMA, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   15.4
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   51.5
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 47.2  
Investment, Identifier [Axis]: MRI Software LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 15.4 [1],[2] 4.5 [4],[5]
Investment, Identifier [Axis]: Mac Lean-Fogg Company and MacLean-Fogg Holdings, L.L.C., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 84.9 [1],[2] 123.8 [4]
Investment, Identifier [Axis]: Mac Lean-Fogg Company and MacLean-Fogg Holdings, L.L.C., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   19.1
Investment, Identifier [Axis]: Magnesium BorrowerCo, Inc. and Magnesium Co-Invest SCSp, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 169.7  
Investment, Identifier [Axis]: MailSouth, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[7] 8.8  
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 30.4 [1],[2] 42.2 [4],[5]
Investment, Identifier [Axis]: Management Consulting & Research LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.0  
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] 1.9 [4],[5]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc. and Marcone Yellowstone Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 30.9 [1],[2] 18.7 [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 7.4 [1],[2] 2.1 [4]
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]   6.6
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]   35.0
Investment, Identifier [Axis]: Marmic Purchaser, LLC and Marmic Topco, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   34.4
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 [1],[2] 28.2  
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],[2] 0.4  
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 27.7 [1],[2] 57.8 [4],[5]
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 [5],[12]   15.6
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 84.5 [1],[2],[15] 84.5 [4],[16]
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.5 [1],[2] 5.5 [4]
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 46.9
Investment, Identifier [Axis]: McKenzie Creative Brands, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.9  
Investment, Identifier [Axis]: Micromeritics Instrument Corp., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 24.0 [1],[2] 32.0 [4]
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 153.5 [1] 153.5 [4]
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 32.6 [1],[2] 72.7 [4],[5]
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   9.2
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   4.7
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   5.0
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   106.6
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   13.9
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Second lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   17.9
Investment, Identifier [Axis]: Ministry Brands, LLC and MB Parent HoldCo, L.P. (dba Community Brands), Second lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   48.9
Investment, Identifier [Axis]: Mitchell International, Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 91.2 [1],[2],[9] 91.2 [4],[5],[10]
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]: Moon Valley Nursery of Arizona Retail, LLC, Moon Valley Nursery Farm Holdings, LLC, Moon Valley Nursery RE Holdings LLC, and Stonecourt IV Partners, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 77.4 [1],[2] 79.0 [4]
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 [1],[2] 26.7  
Investment, Identifier [Axis]: Movati Athletic (Group) Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.6 [1],[2],[3] 0.2 [4],[5],[6]
Investment, Identifier [Axis]: Movati Athletic (Group) Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   2.9
Investment, Identifier [Axis]: Movati Athletic (Group) Inc., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[6]   2.3
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 75.5 [1],[2] 2.7 [4],[5]
Investment, Identifier [Axis]: Murchison Oil and Gas, LLC and Murchison Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   38.3
Investment, Identifier [Axis]: NAS, LLC and Nationwide Marketing Group, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   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 [1],[2] 6.3  
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] 6.4 [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],[2] 1.3  
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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 147.2 [1],[2] 12.1 [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 0.2 [1],[2] 176.4 [4],[5]
Investment, Identifier [Axis]: NM GRC Holdco, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   45.4
Investment, Identifier [Axis]: NMC Skincare Intermediate Holdings II, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 32.0 [1],[2] 24.2 [4]
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] 8.1 [4]
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 [4],[5]   6.2
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 [2],[11] 2.0  
Investment, Identifier [Axis]: NSM Insurance Group, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   12.8
Investment, Identifier [Axis]: NSM Insurance Group, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   0.5
Investment, Identifier [Axis]: Napa Management Services Corporation and ASP NAPA Holdings, LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   72.8
Investment, Identifier [Axis]: National Spine and Pain Centers, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.0  
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   54.4
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   15.2
Investment, Identifier [Axis]: Navisun LLC and Navisun Holdings LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5]   46.5
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    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.4 [2],[3] 15.0 [4],[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 14.9 [1],[2],[3] 5.2 [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 1.4 [2],[3] 24.4 [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 revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.1 [1],[2],[3] 0.2 [4],[5],[6]
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 [1],[2] 28.1  
Investment, Identifier [Axis]: North American Fire Holdings, LLC and North American Fire Ultimate Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   20.1
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 [1],[2] 20.0  
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 [1],[2] 2.9  
Investment, Identifier [Axis]: North American Science Associates, LLC, Cardinal Purchaser LLC and Cardinal Topco Holdings, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 47.7 [1],[2] 48.0 [4]
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 2.5 [1],[2] 2.6 [4]
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 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., First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
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 21.7 [1],[2] 22.3 [4],[5]
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] 3.6  
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 4.8 [1],[2] 11.1 [4],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.7  
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 [1],[2] 0.4  
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.2  
Investment, Identifier [Axis]: Novipax Buyer, L.L.C. and Novipax Parent Holding Company, L.L.C., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 23.5 [1],[2] 23.9 [4]
Investment, Identifier [Axis]: NueHealth Performance, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   12.4
Investment, Identifier [Axis]: NueHealth Performance, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   3.0
Investment, Identifier [Axis]: NueHealth Performance, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   3.3
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 25.9 [1],[2] 26.1 [4]
Investment, Identifier [Axis]: OMH-HealthEdge Holdings, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 15.3 [1],[2] 15.4 [4]
Investment, Identifier [Axis]: OMH-HealthEdge 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]: Offen, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2] 1.4  
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   42.1
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   0.9
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   10.1
Investment, Identifier [Axis]: Olympia Acquisition, Inc. and Olympia TopCo, L.P., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.2
Investment, Identifier [Axis]: Olympia Acquisition, Inc., Olympia TopCo, L.P., and Asclepius Holdings LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 49.3  
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 [1],[2] 3.5  
Investment, Identifier [Axis]: Opal Fuels LLC and Opal Fuels Inc., Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [3] 28.0  
Investment, Identifier [Axis]: Opal Fuels LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans   52.7
Investment, Identifier [Axis]: OpenMarket Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 51.7 [1],[2],[3] 50.7 [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]: PDDS Holdco, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 9.0  
Investment, Identifier [Axis]: PDI TA Hholdings, 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 [4],[5]   70.1
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 53.1 [1],[2] 53.5 [4]
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 [1],[2] 4.7  
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Peachtree Parent, Inc. and Insight PDI Holdings, LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   7.2
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 [1],[2] 70.2  
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 [1],[2] 8.7  
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]    
Total first lien senior secured loans 8.3 [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] 8.7 [4],[5]
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC (fka QC Supply, LLC), First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   14.9
Investment, Identifier [Axis]: PS Operating Company LLC and PS OP Holdings LLC (fka QC Supply, 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]: 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 [1],[2] 14.9  
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 [1],[2] 4.3  
Investment, Identifier [Axis]: Padres L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 92.8 [1],[2] 92.8 [4],[5]
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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 13.7 [1],[2] 11.6 [4],[5]
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] 0.9  
Investment, Identifier [Axis]: Pegasus Global Enterprise Holdings, LLC, Mekone Blocker Acquisition, Inc. and Mekone Parent, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.2
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 [1],[2] 13.7  
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]    
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 0.2 [1],[2] 29.9 [4],[5]
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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 40.2 [1],[2],[3] 1.4 [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 12.6 [1],[2],[3] 44.3 [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 6.2 [1],[2],[3] 13.8 [4],[6]
Investment, Identifier [Axis]: People Corporation, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.1 [1],[2],[3] 2.9 [4],[5],[6]
Investment, Identifier [Axis]: PetVet Care Centers, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 5.3  
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 34.6 [1],[2] 8.1 [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 8.0 [1],[2] 0.2 [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 3.5 [1],[2] 34.2 [4]
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.7
Investment, Identifier [Axis]: Petroleum Service Group LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.8 [1],[2],[11] 2.2 [4],[5],[12]
Investment, Identifier [Axis]: Petvisor Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 19.0  
Investment, Identifier [Axis]: PhyMED Management LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   55.7
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 [1],[2] 22.7  
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., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 106.2 [1],[2] 117.7 [4],[5]
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 13.8 [1],[2],[3] 45.8 [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 [1],[2],[3] 4.0  
Investment, Identifier [Axis]: Precinmac (US) Holdings Inc., Trimaster Manufacturing Inc. and Blade Group Holdings, LP., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 13.8  
Investment, Identifier [Axis]: Precision Concepts International LLC and Precision Concepts Canada Corporation, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 14.7  
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 [1],[2],[3] 0.1  
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 [1],[2],[3] 0.1  
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 [1],[2],[3] 6.2  
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 27.3 [1],[2] 27.5 [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 [1],[2] 1.4  
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 8.6 [1],[2] 8.6
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 [5],[12]   12.0
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., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.3  
Investment, Identifier [Axis]: Prime Buyer, L.L.C., First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.7  
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 6.7 [1],[2],[3] 35.8 [4],[5],[6]
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 97.6 [1],[2] 93.8 [4],[5]
Investment, Identifier [Axis]: Production Resource Group, L.L.C. and PRG III, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   15.0
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 [1],[2] 38.3  
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] 34.9 [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 7.5 [1],[2] 0.8 [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 0.8 [1],[2] 5.0 [4],[5]
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 [2] 16.6  
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 5.5 [1],[2] 3.9 [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],[9] 2.9  
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 36.3 [1],[2] 36.6 [4],[5]
Investment, Identifier [Axis]: Project Potter Buyer, LLC and Project Potter Parent, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   44.1
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 [1],[2] 43.8  
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 19.2 [1],[2] 12.9 [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 12.8 [1],[2] 19.4 [4],[5]
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],[11] 0.8 [4],[5],[12]
Investment, Identifier [Axis]: Project Ruby Ultimate Parent Corp. (dba Wellsky), Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   193.1
Investment, Identifier [Axis]: Project Ruby Ultimate Parent Corp., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 193.1  
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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 4.9  
Investment, Identifier [Axis]: Pyramid Management Advisors, LLC and Pyramid Investors, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 18.3 [1],[2] 18.2 [4]
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 6.4 [1],[2] 6.4 [4],[5]
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 9.7 [1],[2],[11] 9.6 [4],[5],[12]
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   8.1
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 8.1  
Investment, Identifier [Axis]: QF Holdings, Inc., First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.8 [1],[2] 15.5 [4],[5]
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 11.5  
Investment, Identifier [Axis]: RB Holdings InterCo, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.4  
Investment, Identifier [Axis]: RMS HoldCo II, LLC & RMS Group Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 40.2  
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 [1],[2] 0.1  
Investment, Identifier [Axis]: RMS Holdco II, LLC & RMS Group Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   23.5
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 32.9 [1],[2] 33.1 [4]
Investment, Identifier [Axis]: RSC Acquisition, Inc. and RSC Insurance Brokerage, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   0.3
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 22.6 [1],[2] 28.5 [4]
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 9.8 [1],[2] 5.0 [4],[5]
Investment, Identifier [Axis]: Radius Aerospace, Inc. and Radius Aerospace Europe Limited, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 0.2  
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 [1],[2],[3] 0.7  
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 8.5 [1],[2],[3] 28.5 [4],[5],[6]
Investment, Identifier [Axis]: Rawlings Sporting Goods Company, Inc. and Easton Diamond Sports, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 49.8 [1],[2] 93.2 [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] 8.8 [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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 61.4 [1],[2] 61.9 [4]
Investment, Identifier [Axis]: Reddy Ice LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 12.9 [1],[2] 4.3 [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 4.3 [1],[2] 13.0 [4],[5]
Investment, Identifier [Axis]: Redwood Services, LLC and Redwood Services Holdco, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.6 [1],[2] 1.0 [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 0.8 [1],[2] 12.5 [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],[2] 0.2  
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   25.0
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 24.0  
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.2 [1],[2] 1.1 [4]
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   12.1
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[11] 33.4  
Investment, Identifier [Axis]: Reef Lifestyle, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.8 [1],[2] 0.6 [4],[5]
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 8.7 [1],[2] 37.9 [4],[5]
Investment, Identifier [Axis]: Relativity ODA LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 21.9 [1],[2] 59.8 [4],[5]
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 revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.9  
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   9.5
Investment, Identifier [Axis]: Rialto Management Group, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 0.3  
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] 0.7 [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] 7.7 [5],[6]
Investment, Identifier [Axis]: Riser Merger Sub, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 5.9  
Investment, Identifier [Axis]: Riverview Power LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 50.1 [1],[2] 54.2 [4],[5]
Investment, Identifier [Axis]: Rodeo AcquisitionCo LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 17.0 [1],[2] 17.1 [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 0.9 [1],[2] 0.4 [4],[5]
Investment, Identifier [Axis]: Rug Doctor, LLC and RD Holdco Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 23.9 [2],[7] 22.0 [4],[5]
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]   2.1
Investment, Identifier [Axis]: SCM Insurance Services Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 60.0 [1],[2],[3] 20.4 [4],[5],[6]
Investment, Identifier [Axis]: SCM Insurance Services Inc., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[6]   60.0
Investment, Identifier [Axis]: SE1 Generation, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 61.6 [2] 58.8 [5]
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   10.1
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 10.1  
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 6.2 [1],[2] 6.3 [4]
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.4  
Investment, Identifier [Axis]: SFE Intermediate Holdco LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 6.4  
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] 35.6 [4]
Investment, Identifier [Axis]: SHO Holding I Corporation, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 124.9 [2],[7] 116.2 [4],[5]
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] 59.4  
Investment, Identifier [Axis]: SSE Buyer, Inc., Supply Source Enterprises, Inc., Impact Products LLC, The Safety Zone, LLC and SSE Parent, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 20.9 [1],[2] 21.4 [4],[5]
Investment, Identifier [Axis]: SV-Burton Holdings, LLC & LBC Breeze Holdings LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   11.0
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 [1],[2] 9.0  
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 44.6 [1],[2] 44.9 [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 48.0 [1],[2] 46.2 [4],[5]
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 [1],[2] 14.1  
Investment, Identifier [Axis]: Schill Landscaping and Lawn Care Services LLC and Landscape Parallel Partners, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   5.8
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],[2] 0.6  
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 [1],[2] 0.5  
Investment, Identifier [Axis]: SelectQuote, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 22.2 [1],[2] 22.6 [4],[5]
Investment, Identifier [Axis]: Senior Direct Lending Program, LLC, Subordinated certificates    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 269,806.0 [3],[17] 987.3 [6]
Investment, Identifier [Axis]: Shermco Intermediate Holdings, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2] 3.1  
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] 19.2 [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 0.2 [1],[2],[11] 1.1 [4],[5],[12]
Investment, Identifier [Axis]: Shock Doctor, Inc. and Shock Doctor Holdings, LLC, First lien senior secured revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   0.1
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co HoldCo, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   27.0
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]   1.0
Investment, Identifier [Axis]: Shur-Co Acquisition, Inc. and Shur-Co Holdco, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 26.8  
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 [1],[2] 0.1  
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 [1] 2.8  
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 10.3 [1],[2] 11.5 [4]
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 [1],[2] 10.6  
Investment, Identifier [Axis]: Smarsh Inc., MobileGuard, LLC, Actiance, Inc. and Skywalker TopCo, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   13.3
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, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 11.4  
Investment, Identifier [Axis]: Spring Insurance Solutions, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 22.1 [1],[2] 19.7 [4]
Investment, Identifier [Axis]: Stamps.com Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 147.1 [1],[2] 197.9 [4],[5]
Investment, Identifier [Axis]: Stealth Holding LLC and UCIT Online Security Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 52.3 [1],[2],[3] 50.5 [4],[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 4.0 [1],[2],[3] 0.8 [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 [1],[2],[3] 1.7  
Investment, Identifier [Axis]: Storable, Inc. and EQT IX Co-Investment (E) SCSP, Second lien senior secured loan    
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 [1],[2] 10.3  
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 60.5 [2],[3] 70.2 [5],[6]
Investment, Identifier [Axis]: Sun Acquirer Corp. and Sun TopCo, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 43.3 [1],[2] 17.4 [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 15.3 [1],[2] 74.4 [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 [1],[2],[11] 1.0  
Investment, Identifier [Axis]: Sundance Group Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 15.4 [1],[2] 15.4 [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 2.0 [1],[2] 0.9 [4],[5]
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 146.3 [1],[2] 142.5 [4],[5]
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC, Senior subordinated revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[3] 44.9  
Investment, Identifier [Axis]: Sunrun Luna Holdco 2021, LLC, Senior subordinated revolving loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[3] 29.8  
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]    
Total first lien senior secured loans 0.4 [2] 0.4 [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 71.3 [1],[2] 69.3
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 [1],[2] 12.4  
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 [2] 3.0  
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] 69.9 [4],[5]
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] 15.3 [4]
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   0.1
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, First lien senior secured loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.6  
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 [4],[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 [4],[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 0.1 [1],[2] 8.3 [4],[5]
Investment, Identifier [Axis]: TA/WEG Holdings, LLC, 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]: TCP Hawker Intermediate LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   6.6
Investment, Identifier [Axis]: TCP Hawker Intermediate LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 34.6  
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] 4.0 [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 [4]   34.8
Investment, Identifier [Axis]: TCP Hawker Intermediate 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]: THG Acquisition, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 14.9 [1],[2] 0.6 [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 6.5 [1],[2] 0.1 [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 0.1 [1],[2] 23.2 [4],[5]
Investment, Identifier [Axis]: THG Acquisition, LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   14.9
Investment, Identifier [Axis]: Tamarack Intermediate, L.L.C. and Tamarack Parent, L.L.C., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 35.2  
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 1.4 [1],[2] 1.1 [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    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 0.8 [1],[2] 0.5 [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 75.8 [1],[2] 78.3 [4],[5]
Investment, Identifier [Axis]: Teligent, Inc, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[8]   8.8
Investment, Identifier [Axis]: Teligent, Inc, Second lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[8]   1.4
Investment, Identifier [Axis]: Teligent, Inc, Second lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [5],[8]   77.8
Investment, Identifier [Axis]: Tempus Labs, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 71.4  
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.0 [1],[2] 5.1 [4]
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 2.1 [1],[2] 2.1 [4]
Investment, Identifier [Axis]: TerSera Therapeutics LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1.8 [1],[2] 1.8 [4]
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 12.6 [1],[2] 15.5 [4],[5]
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 28.9 [1],[2] 47.2 [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 [1],[2] 11.5  
Investment, Identifier [Axis]: The Arcticom Group, LLC and AMCP Mechanical Holdings, LP, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 5.4 [1],[2] 2.0 [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 [1],[2] 4.6  
Investment, Identifier [Axis]: The Edelman Financial Center, LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[3] 5.4  
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 [1],[2],[3] 3.3  
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 [2],[3] 2.9  
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 [1],[2] 212.0  
Investment, Identifier [Axis]: The Ultimate Software Group, 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 [2],[3],[11] 0.9  
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 37.5 [1],[2] 37.8 [4]
Investment, Identifier [Axis]: Therapy Brands Holdings LLC, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 20.5 [1],[2] 20.5 [4],[5]
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] 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., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[9] 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., Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 85.3  
Investment, Identifier [Axis]: TibCo Software Inc., Picard Parent, Inc., Picard MidCo, Inc., Picard HoldCo, LLC and Elliott Alto Co-Investor Aggregator L.P., Senior secured notes    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[9] 88.9  
Investment, Identifier [Axis]: Top Five Largest Portfolio Company Investments | Senior Direct Lending Program    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 1,616.0 1,540.0
Investment, Identifier [Axis]: Totes Isotoner Corporation and Totes Ultimate Holdco, Inc., First lien senior secured loan    
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]: 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]: 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]: 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 26.4 [1],[2] 40.1 [4],[5]
Investment, Identifier [Axis]: United Digestive MSO Parent, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.0  
Investment, Identifier [Axis]: VLS Recovery Services, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   8.8
Investment, Identifier [Axis]: VLS Recovery Services, LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   5.2
Investment, Identifier [Axis]: VLS Recovery Services, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5],[12]   1.3
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 3.3 [1],[2] 6.4 [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 [1],[2] 2.5  
Investment, Identifier [Axis]: VPP Intermediate Holdings, LLC and VPP Group Holdings, L.P., First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 0.5  
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],[11] 0.1  
Investment, Identifier [Axis]: VPROP Operating, LLC and V SandCo, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 27.3 [1],[2] 7.0 [4],[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 9.4 [1],[2] 5.5 [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 6.0 [1],[2] 25.1 [4],[5]
Investment, Identifier [Axis]: VRC Companies, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.1  
Investment, Identifier [Axis]: VRC Companies, LLC, First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1] 0.8  
Investment, Identifier [Axis]: VRC Companies, LLC, Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2] 5.0  
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 [1],[2],[9] 9.7  
Investment, Identifier [Axis]: Varsity Brands Holding Co., Inc. and BCPE Hercules Holdings, LP, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 122.7 [1],[2] 21.1 [4],[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]    
Total first lien senior secured loans 21.1 [1],[2] 122.7 [4]
Investment, Identifier [Axis]: Verista, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 0.8  
Investment, Identifier [Axis]: Verista, Inc., First lien senior secured revolving loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 1.1  
Investment, Identifier [Axis]: Viant Medical Holdings, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [2],[9] 0.3  
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] 32.5 [4],[5]
Investment, Identifier [Axis]: Visual Edge Technology, Inc., Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 99.8 [2],[7] 88.6 [5]
Investment, Identifier [Axis]: WA Asset Management, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2],[3] 4.0  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC and WSHP FC Holdings LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 33.2  
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 [1],[2] 14.6  
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 [1],[2] 10.7  
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 [1],[2] 11.3  
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 [1],[2] 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 [1],[2] 0.1  
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 [1],[2] 0.1  
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 [1],[2],[11] 4.5  
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   4.9
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   33.4
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   4.5
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   11.4
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 5    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   10.8
Investment, Identifier [Axis]: WSHP FC Acquisition LLC, First lien senior secured loan 6    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   9.0
Investment, Identifier [Axis]: WSHP FC Acquisition 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]: Walnut Parent, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 14.7 [1],[2] 14.9 [4]
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] 19.9 [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] 180.2 [5]
Investment, Identifier [Axis]: Wash Encore Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 134.6 [1],[2] 135.6 [4],[5]
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 19.3 [1],[2] 19.4 [4]
Investment, Identifier [Axis]: WebPT, Inc., First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 48.1 [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 [1],[2] 0.2  
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]: Wildcat BuyerCo, Inc. and Wildcat Parent, LP, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 18.0 [1],[2] 18.2 [4]
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 0.2 [1],[2] 9.5 [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 [1],[2] 0.2  
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 28.1 [1],[2] 28.3 [4]
Investment, Identifier [Axis]: WorkWave Intermediate II, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 65.6 [1],[2] 61.6 [4],[5]
Investment, Identifier [Axis]: XIFIN, Inc. and ACP Charger Co-Invest LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 37.1 [1] 16.3 [4],[5]
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 0.1 [1],[2] 39.3 [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 0.2 [1] 1.1 [4],[5]
Investment, Identifier [Axis]: YE Brands Holdings, LLC, First lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 8.2 [1],[2] 8.0 [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 [1],[2] 8.0  
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 [1],[2] 1.4  
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4],[5]   56.0
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 1    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 55.8  
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 2    
Schedule of Investments [Line Items]    
Total first lien senior secured loans 56.0 [1],[2] 5.4 [4],[5]
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 3    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 24.3  
Investment, Identifier [Axis]: eCapital Finance Corp., Senior subordinated loan 4    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [1],[2] 5.4  
Investment, Identifier [Axis]: eResearch Technology, Inc. and Astorg VII Co-Invest ERT, Second lien senior secured loan    
Schedule of Investments [Line Items]    
Total first lien senior secured loans [4]   22.5
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 [1],[2] 30.6  
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 $ 17.2 [1],[2] $ 30.6 [4],[5]
[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 facility (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, 23% of the Company's total assets are represented by investments at fair value and other assets that are considered "non-qualifying assets" as of September 30, 2022.
[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 facility (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, 16% 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, 2021.
[7] Loan was on non-accrual status as of September 30, 2022.
[8] Loan was on non-accrual status as of December 31, 2021.
[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 September 30, 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.
[12] As of December 31, 2021, 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] The Company sold a participating interest of approximately $79.3 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 $79.3 secured borrowing, at fair value, included in “secured borrowings” in the accompanying consolidated balance sheet. As of September 30, 2022, the interest rate in effect for the secured borrowing was 10.06%.
[14] The Company sold a participating interest of approximately $75.0 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 $73.2 secured borrowing, at fair value, included in “secured borrowings” in the accompanying consolidated balance sheet. As of December 31, 2021, the interest rate in effect for the secured borrowing was 8.50%.
[15] 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.
[16] 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 $46.9 in aggregate principal amount of a “first out” tranche of the portfolio company’s senior term debt previously syndicated by the Company into “first out” and “last out” tranches, whereby the “first out” tranche will have priority as to the “last out” tranche with respect to payments of principal, interest and any other amounts due thereunder.
[17] As of September 30, 2022, no amounts were funded by the Company under this first lien senior secured revolving loan; however, there were letters of credit issued and outstanding through a financial intermediary under the loan. See Note 7 for further information on letters of credit commitments related to certain portfolio companies.
v3.22.2.2
INVESTMENTS - Ivy Hill Asset Management, L.P. (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Schedule of Investments [Line Items]          
Amortized cost of investments $ 21,468.5   $ 21,468.5   $ 19,810.0
Total investments at fair value 21,338.5   21,338.5   20,009.5
Purchases of investments     7,048.0 $ 8,026.0  
Proceeds from investment commitments repaid     5,565.0 6,738.0  
Ivy Hill Asset Management, L.P.          
Schedule of Investments [Line Items]          
Amortized cost of investments 1,809.0   1,809.0   781.0
Total investments at fair value 1,958.0   1,958.0   936.0
Realized loss on sale of investments     10,000.0 5.0  
Purchases of investments     27.0    
Proceeds from investment commitments repaid     233.0 108.0  
Equity investment          
Schedule of Investments [Line Items]          
Amortized cost of investments 1,373.0   1,373.0   765.0
Total investments at fair value 1,522.0   1,522.0   920.0
Debt investment          
Schedule of Investments [Line Items]          
Amortized cost of investments 436.0   436.0   16.0
Total investments at fair value 436.0   436.0   16.0
Ivy Hill Asset Management, L.P.          
Schedule of Investments [Line Items]          
Assets under management 12,500.0   12,500.0    
Amortized cost of investments 2,133.0   2,133.0   $ 966.0
Management and incentive fee income 13.0 $ 8.0 34.0 23.0  
Other investment-related income $ 42.0 $ 22.0 103.0 64.0  
Purchases of investments     $ 2,415,000.0 $ 1,049.0  
v3.22.2.2
INVESTMENTS - Dividend and Interest Income, IHAM (Details) - Ivy Hill Asset Management, L.P. - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Schedule of Investments [Line Items]        
Dividend income $ 55 $ 23 $ 150 $ 65
Interest income $ 8 $ 0 $ 11 $ 2
v3.22.2.2
DEBT - Debt Narrative (Details)
$ in Millions
 6 Months Ended 9 Months Ended 12 Months Ended 39 Months Ended
Sep. 30, 2022
USD ($)
Jun. 20, 2019
Sep. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
Sep. 30, 2022
USD ($)
Debt Disclosure [Abstract]          
Asset coverage 1.79 2 1.50   1.50
Principal amount of debt outstanding $ 11,853   $ 11,853 $ 11,061 $ 11,853
Weighted average stated interest rate 3.80%   3.80% 3.10% 3.80%
Weighted average maturity     3 years 9 months 18 days 4 years 2 months 12 days  
v3.22.2.2
DEBT - Schedule of Outstanding Debt (Details) - USD ($)
Sep. 30, 2022
Dec. 31, 2021
Debt Instrument [Line Items]    
Total aggregate principal amount committed / outstanding $ 16,221,000,000 $ 15,248,000,000
Principal amount outstanding 11,853,000,000 11,061,000,000
Carrying value 11,816,000,000 11,020,000,000
Revolving Credit Facility    
Debt Instrument [Line Items]    
Borrowing capacity increase under line of credit 7,265,000,000 7,265,000,000
SMBC Funding Facility    
Debt Instrument [Line Items]    
Borrowing capacity increase under line of credit 1,000,000,000 1,000,000,000
Line of Credit | Revolving Credit Facility    
Debt Instrument [Line Items]    
Total aggregate principal amount committed / outstanding 4,843,000,000 4,232,000,000
Principal amount outstanding 1,787,000,000 1,507,000,000
Carrying value 1,787,000,000 1,507,000,000
Maximum borrowing capacity of line of credit 4,843,000,000  
Line of Credit | Revolving Funding Facility    
Debt Instrument [Line Items]    
Total aggregate principal amount committed / outstanding 1,775,000,000 1,525,000,000
Principal amount outstanding 932,000,000 762,000,000
Carrying value 932,000,000 762,000,000
Maximum borrowing capacity of line of credit 1,775,000,000  
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 456,000,000 401,000,000
Carrying value 456,000,000 401,000,000
Maximum borrowing capacity of line of credit 800,000,000  
Line of Credit | BNP Funding Facility    
Debt Instrument [Line Items]    
Total aggregate principal amount committed / outstanding 300,000,000 300,000,000
Principal amount outstanding 175,000,000 0
Carrying value 175,000,000 0
Maximum borrowing capacity of line of credit 300,000,000  
Convertible Debt | 2022 Convertible Notes    
Debt Instrument [Line Items]    
Total aggregate principal amount committed / outstanding 0 388,000,000
Principal amount outstanding 0 388,000,000
Carrying value 0 388,000,000
Total unamortized debt issuance costs and unamortized discount   0
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 399,000,000 395,000,000
Total unamortized debt issuance costs and unamortized discount 4,000,000 8,000,000
Senior Notes | 2023 Notes    
Debt Instrument [Line Items]    
Total aggregate principal amount committed / outstanding 750,000,000 750,000,000
Principal amount outstanding 750,000,000 750,000,000
Carrying value 750,000,000 748,000,000
Total unamortized debt issuance costs and unamortized discount 0 2,000,000
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 898,000,000 897,000,000
Total unamortized debt issuance costs and unamortized discount 2,000,000 3,000,000
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 597,000,000 596,000,000
Total unamortized debt issuance costs and unamortized discount 3,000,000 4,000,000
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 1,258,000,000 1,260,000,000
Total unamortized debt issuance costs and unamortized discount (8,000,000) (10,000,000)
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 1,144,000,000 1,143,000,000
Total unamortized debt issuance costs and unamortized discount 6,000,000 7,000,000
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 990,000,000 988,000,000
Total unamortized debt issuance costs and unamortized discount 10,000,000 12,000,000
Senior Notes | 2027 Notes    
Debt Instrument [Line Items]    
Total aggregate principal amount committed / outstanding 500,000,000 0
Principal amount outstanding 500,000,000 0
Carrying value 494,000,000 0
Total unamortized debt issuance costs and unamortized discount 6,000,000  
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 1,246,000,000 1,246,000,000
Total unamortized debt issuance costs and unamortized discount 4,000,000 4,000,000
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 690,000,000 689,000,000
Total unamortized debt issuance costs and unamortized discount $ 10,000,000 $ 11,000,000
v3.22.2.2
DEBT - Revolving Credit Facility Narrative (Details)
$ in Millions
 3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2022
USD ($)
Sep. 30, 2022
USD ($)
Mar. 30, 2022
Sep. 30, 2022
USD ($)
Sep. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2017
USD ($)
Debt Instrument [Line Items]              
Principal amount of debt outstanding $ 11,853 $ 11,853   $ 11,853 $ 11,853 $ 11,061  
Principal amount of debt 16,221 16,221   16,221 16,221 15,248  
Revolving Credit Facility              
Debt Instrument [Line Items]              
Borrowing capacity increase under line of credit 7,265 7,265   $ 7,265 $ 7,265 7,265  
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 $ 4,843 $ 4,843   $ 4,843 $ 4,843    
Minimum required ratio of total assets to total indebtedness 1.5 1.5   1.5 1.5    
Principal amount of debt outstanding $ 1,787 $ 1,787   $ 1,787 $ 1,787 1,507  
Remaining amount available for borrowing under line of credit 2,961 2,961   2,961 2,961    
Principal amount of debt $ 4,843 $ 4,843   $ 4,843 4,843 4,232  
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 $ 1,087 $ 1,087   $ 1,087 1,087    
Principal amount of debt             $ 395
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 1,009 1,009   1,009 1,009    
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 28 28   28 28    
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 50 50   50 50    
Revolving Credit Facility | Line of Credit | Revolving tranche              
Debt Instrument [Line Items]              
Maximum borrowing capacity of line of credit 3,756 3,756   3,756 3,756    
Revolving Credit Facility | Line of Credit | Revolving tranche | Debt Instrument, Redemption, Period One              
Debt Instrument [Line Items]              
Maximum borrowing capacity of line of credit 3,499 3,499   3,499 3,499    
Revolving Credit Facility | Line of Credit | Revolving tranche | Debt Instrument, Redemption, Period Two              
Debt Instrument [Line Items]              
Maximum borrowing capacity of line of credit 107 107   107 107    
Revolving Credit Facility | Line of Credit | Revolving tranche | Debt Instrument, Redemption, Period Three              
Debt Instrument [Line Items]              
Maximum borrowing capacity of line of credit 150 150   150 150    
Revolving Credit Facility | Line of Credit | Letter of Credit              
Debt Instrument [Line Items]              
Maximum borrowing capacity of line of credit 250 250   250 250    
Borrowing capacity increase under line of credit 50 50   50 50    
Principal amount of debt outstanding $ 95 $ 95   $ 95 $ 95 $ 68  
v3.22.2.2
DEBT - Schedule of Components of Debt Interest Expense (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Line of Credit Facility [Line Items]        
Amortization of debt issuance costs     $ 22 $ 19
Cash paid for interest expense     303 250
Convertible Debt        
Line of Credit Facility [Line Items]        
Stated interest expense $ 5 $ 8 15 25
Amortization of debt issuance costs 0 1 1 2
Net (amortization) accretion of original issue premium/discount 0 1 2 4
Total interest and credit facility fees expense 5 10 18 31
Cash paid for interest expense 9 17 26 34
Senior Notes        
Line of Credit Facility [Line Items]        
Stated interest expense 67 62 202 168
Amortization of debt issuance costs 4 4 11 8
Net (amortization) accretion of original issue premium/discount (2) (1) (5) (1)
Total interest and credit facility fees expense 69 65 208 175
Cash paid for interest expense 79 90 213 187
Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Average outstanding balance 1,875 889 1,402 922
Revolving Credit Facility | Line of Credit        
Line of Credit Facility [Line Items]        
Stated interest expense 19 4 34 14
Credit facility fees 5 4 7 11
Amortization of debt issuance costs 2 2 5 4
Total interest and credit facility fees expense 26 10 46 29
Cash paid for interest expense $ 19 $ 4 $ 35 $ 14
Average stated interest rate 3.95% 1.97% 3.15% 2.09%
Revolving Funding Facility        
Line of Credit Facility [Line Items]        
Average outstanding balance $ 944 $ 368 $ 805 $ 602
Revolving Funding Facility | Line of Credit        
Line of Credit Facility [Line Items]        
Stated interest expense 10 2 19 12
Credit facility fees 1 2 3 5
Amortization of debt issuance costs 1 1 2 3
Total interest and credit facility fees expense 12 5 24 20
Cash paid for interest expense $ 9 $ 3 $ 19 $ 11
Average stated interest rate 4.38% 2.69% 3.17% 2.35%
SMBC Funding Facility        
Line of Credit Facility [Line Items]        
Average outstanding balance $ 402 $ 9 $ 403 $ 155
SMBC Funding Facility | Line of Credit        
Line of Credit Facility [Line Items]        
Stated interest expense 4 0 9 2
Credit facility fees 1 2 2 4
Amortization of debt issuance costs 1 1 2 2
Total interest and credit facility fees expense 6 3 13 8
Cash paid for interest expense $ 4 $ 0 $ 9 $ 3
Average stated interest rate 4.27% 2.36% 3.00% 2.00%
BNP Funding Facility        
Line of Credit Facility [Line Items]        
Average outstanding balance $ 143 $ 0 $ 81 $ 20
BNP Funding Facility | Line of Credit        
Line of Credit Facility [Line Items]        
Stated interest expense 2 0 3 1
Credit facility fees 0 1 1 3
Amortization of debt issuance costs 0 0 1 0
Total interest and credit facility fees expense 2 1 5 4
Cash paid for interest expense $ 1 $ 0 $ 1 $ 1
Average stated interest rate 4.35% 0.00% 3.95% 3.45%
v3.22.2.2
DEBT - Revolving Funding Facility Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
Jun. 29, 2022
Sep. 30, 2022
Dec. 28, 2021
Dec. 31, 2021
Debt Instrument [Line Items]          
Principal amount of debt outstanding $ 11,853   $ 11,853   $ 11,061
Revolving Funding Facility | Minimum          
Debt Instrument [Line Items]          
Percentage of unused portion of line of credit commitment     0.50% 0.50%  
Revolving Funding Facility | Maximum          
Debt Instrument [Line Items]          
Percentage of unused portion of line of credit commitment     1.25% 1.50%  
Revolving Funding Facility | Line of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity of line of credit 1,775   $ 1,775    
Principal amount of debt outstanding $ 932   $ 932   $ 762
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 1.90% 1.00%   1.00%  
Revolving Funding Facility | Line of Credit | London Interbank Offered Rate (LIBOR)          
Debt Instrument [Line Items]          
Interest rate spread   1.90%   2.00%  
v3.22.2.2
DEBT - SMBC Funding Facility Narrative (Details)
$ in Millions
 9 Months Ended
Sep. 30, 2022
USD ($)
extensionOption
Sep. 30, 2022
USD ($)
extensionOption
Dec. 31, 2021
USD ($)
Debt Instrument [Line Items]      
Principal amount of debt outstanding $ 11,853 $ 11,853 $ 11,061
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  
Number of debt maturity extensions | extensionOption 2 2  
Term of debt maturity extension option   1 year  
Principal amount of debt outstanding $ 456 $ 456 $ 401
SMBC Funding Facility | Line of Credit | London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Interest rate spread 1.75%    
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%  
SMBC Funding Facility | Line of Credit | Base Rate | Minimum      
Debt Instrument [Line Items]      
Interest rate spread   0.75%  
SMBC Funding Facility | Line of Credit | Base Rate | Maximum      
Debt Instrument [Line Items]      
Interest rate spread   1.00%  
v3.22.2.2
DEBT - BNP Funding Facility Narrative (Details)
 6 Months Ended 9 Months Ended
Sep. 30, 2022
USD ($)
Jun. 28, 2021
Sep. 30, 2022
USD ($)
Sep. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
Debt Instrument [Line Items]          
Principal amount of debt outstanding $ 11,853,000,000   $ 11,853,000,000 $ 11,853,000,000 $ 11,061,000,000
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 300,000,000   $ 300,000,000 300,000,000  
Term of debt maturity extension option     1 year    
Principal amount of debt outstanding $ 175,000,000   $ 175,000,000 $ 175,000,000 $ 0
BNP Funding Facility | Line of Credit | Base Rate, During Reinvestment Period          
Debt Instrument [Line Items]          
Interest rate spread       1.80%  
Interest rate floor   0.0275      
BNP Funding Facility | Line of Credit | Base Rate, After Reinvestment Period          
Debt Instrument [Line Items]          
Interest rate spread       2.30%  
Interest rate floor   0.0325      
BNP Funding Facility | Line of Credit | London Interbank Offered Rate (LIBOR)          
Debt Instrument [Line Items]          
Interest rate spread 1.80%        
Interest rate floor   0.0045      
BNP Funding Facility | Line of Credit | Base Rate | Minimum          
Debt Instrument [Line Items]          
Interest rate spread   2.65%      
BNP Funding Facility | Line of Credit | Base Rate | Maximum          
Debt Instrument [Line Items]          
Interest rate spread   3.15%      
v3.22.2.2
DEBT - Convertible Unsecured Notes Narrative (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Feb. 28, 2022
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Debt Instrument [Line Items]            
Principal amount of debt   $ 16,221   $ 16,221   $ 15,248
Realized loss on extinguishment of debt   0 $ 0 48 $ 43  
2024 Convertible Notes | Convertible Debt            
Debt Instrument [Line Items]            
Principal amount of debt   $ 403   $ 403   403
Stated interest rate   4.625%   4.625%    
Repurchase price, percentage of principal amount       100.00%    
Debt issuance costs   $ 3   $ 3    
2022 Convertible Notes | Convertible Debt            
Debt Instrument [Line Items]            
Principal amount of debt   $ 0   $ 0   $ 388
Stated interest rate 4.60%          
Repayment of debt $ 388          
Realized loss on extinguishment of debt $ 48          
v3.22.2.2
DEBT - Schedule of Key Components of Convertible Notes (Details)
$ / shares in Units, $ in Millions
 9 Months Ended
Sep. 30, 2022
USD ($)
$ / shares
Dec. 31, 2021
USD ($)
Debt Instrument [Line Items]    
Principal amount of debt $ 16,221 $ 15,248
Carrying value of debt $ 11,816 11,020
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 $ 19.78  
Conversion rate (shares per one thousand dollar principal amount) 50.5549  
Principal amount of debt $ 403 403
Original issue discount, net of accretion (1)  
Debt issuance costs, net of amortization (3)  
Carrying value of debt $ 399 $ 395
Stated interest rate 4.625%  
Effective interest rate 5.10%  
v3.22.2.2
DEBT - Schedule of Key Components of Unsecured Notes (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Debt Instrument [Line Items]    
Principal amount of debt $ 16,221 $ 15,248
2023 Notes | Senior Notes    
Debt Instrument [Line Items]    
Principal amount of debt $ 750 750
Interest Rate 3.50%  
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 0
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%  
v3.22.2.2
DERIVATIVE INSTRUMENTS - Narrative (Details) - USD ($)
$ in Millions
 1 Months Ended
Dec. 31, 2017
Sep. 30, 2022
Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Principal amount of debt   $ 16,221 $ 15,248
Interest rate swap      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative, term of contract (in years) 3 years    
Notional amount $ 395    
Fixed interest rate (as a percent) 2.06%    
Interest rate swap | London Interbank Offered Rate (LIBOR)      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Basis spread on variable rate (as a percent) 1.75%    
Revolving Credit Facility | Term Loan      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Principal amount of debt $ 395    
v3.22.2.2
DERIVATIVE INSTRUMENTS - Schedule of Derivative Instruments (Details)
€ in Millions, £ in Millions, $ in Millions, $ in Millions, $ in Millions
Sep. 30, 2022
USD ($)
Sep. 30, 2022
CAD ($)
Sep. 30, 2022
EUR (€)
Sep. 30, 2022
GBP (£)
Sep. 30, 2022
NZD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2021
CAD ($)
Dec. 31, 2021
EUR (€)
Dec. 31, 2021
GBP (£)
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets $ 714         $ 702      
Gross Amount of Recognized Liabilities (674)         (714)      
Maturity Date 10/28/2022, CAD                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Notional Amount   $ 262              
Maturity Date 10/28/2022, CAD | Other assets                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets 203                
Gross Amount of Recognized Liabilities (190)                
Maturity Date 10/19/2022, CAD                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Notional Amount   237              
Maturity Date 10/19/2022, CAD | Other assets                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets 178                
Gross Amount of Recognized Liabilities (171)                
Maturity Date 10/28/2022, EUR                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Notional Amount | €     € 135            
Maturity Date 10/28/2022, EUR | Other assets                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets 137                
Gross Amount of Recognized Liabilities (132)                
Maturity Date 10/28/2022, GBP                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Notional Amount | £       £ 123          
Maturity Date 10/28/2022, GBP | Other assets                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets 148                
Gross Amount of Recognized Liabilities (137)                
Maturity Date 10/28/2022, NZD                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Notional Amount         $ 72        
Maturity Date 10/28/2022, NZD | Other assets                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets 45                
Gross Amount of Recognized Liabilities (41)                
Maturity Date 10/28/2022, CAD 2                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Notional Amount   $ 2              
Maturity Date 10/28/2022, CAD 2 | Accounts payable and other liabilities                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets 2                
Gross Amount of Recognized Liabilities (2)                
Maturity Date 10/28/2022, EUR 2                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Notional Amount | €     € 1            
Maturity Date 10/28/2022, EUR 2 | Accounts payable and other liabilities                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets 1                
Gross Amount of Recognized Liabilities $ (1)                
Maturity Date 1/28/2022, CAD                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Notional Amount             $ 309    
Maturity Date 1/28/2022, CAD | Accounts payable and other liabilities                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets           240      
Gross Amount of Recognized Liabilities           (245)      
Maturity Date 1/19/2022, CAD                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Notional Amount             209    
Maturity Date 1/19/2022, CAD | Accounts payable and other liabilities                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets           163      
Gross Amount of Recognized Liabilities           (165)      
Maturity Date 1/28/2022, EUR                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Notional Amount | €               € 153  
Maturity Date 1/28/2022, EUR | Accounts payable and other liabilities                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets           172      
Gross Amount of Recognized Liabilities           (174)      
Maturity Date 1/28/2022, GBP                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Notional Amount | £                 £ 95
Maturity Date 1/28/2022, GBP | Accounts payable and other liabilities                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets           126      
Gross Amount of Recognized Liabilities           (129)      
Maturity Date 1/28/2022, CAD                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Notional Amount             $ 2    
Maturity Date 1/28/2022, CAD | Accounts payable and other liabilities                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                  
Gross Amount of Recognized Assets           1      
Gross Amount of Recognized Liabilities           $ (1)      
v3.22.2.2
DERIVATIVE INSTRUMENTS - Schedule of Net Realized and Unrealized Gains (Losses) on Derivative Instruments (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Net realized gains (losses) from foreign currency and other transactions        
Derivative Instruments, Gain (Loss) [Line Items]        
Net realized gains (losses) on derivative instruments $ 22 $ 17 $ 36 $ 9
Net unrealized gains (losses) from foreign currency and other transactions        
Derivative Instruments, Gain (Loss) [Line Items]        
Net unrealized gains (losses) on derivative instruments 31 (2) 52 4
Interest rate swap | Net realized gains (losses) from foreign currency and other transactions        
Derivative Instruments, Gain (Loss) [Line Items]        
Net realized gains (losses) on derivative instruments 0 0 0 0
Interest rate swap | Net unrealized gains (losses) from foreign currency and other transactions        
Derivative Instruments, Gain (Loss) [Line Items]        
Net unrealized gains (losses) on derivative instruments 0 0 0 1
Foreign currency forward contract | Net realized gains (losses) from foreign currency and other transactions        
Derivative Instruments, Gain (Loss) [Line Items]        
Net realized gains (losses) on derivative instruments 22 17 36 9
Foreign currency forward contract | Net unrealized gains (losses) from foreign currency and other transactions        
Derivative Instruments, Gain (Loss) [Line Items]        
Net unrealized gains (losses) on derivative instruments $ 31 $ (2) $ 52 $ 3
v3.22.2.2
COMMITMENTS AND CONTINGENCIES - Schedule of Loan Commitments (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Revolving and delayed draw loan commitments    
Other Commitments [Line Items]    
Commitments to fund delayed draw loans $ 3,205 $ 2,733
Funded commitments    
Other Commitments [Line Items]    
Commitments to fund delayed draw loans 520 352
Unfunded commitments    
Other Commitments [Line Items]    
Commitments to fund delayed draw loans 2,685 2,381
Commitments substantially at discretion of the company    
Other Commitments [Line Items]    
Commitments to fund delayed draw loans 0 0
Unavailable commitments due to borrowing base or other covenant restrictions    
Other Commitments [Line Items]    
Commitments to fund delayed draw loans 0 4
Net adjusted unfunded revolving and delayed draw loan commitments    
Other Commitments [Line Items]    
Commitments to fund delayed draw loans $ 2,685 $ 2,377
v3.22.2.2
COMMITMENTS AND CONTINGENCIES - Schedule of Private Equity Commitments (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Private equity commitments    
Other Commitments [Line Items]    
Other commitment $ 116 $ 111
Funded private equity commitments    
Other Commitments [Line Items]    
Other commitment 66 68
Unfunded private equity commitments    
Other Commitments [Line Items]    
Other commitment 50 43
Private equity commitments substantially at discretion of the company    
Other Commitments [Line Items]    
Other commitment 50 43
Net adjusted unfunded private equity commitments    
Other Commitments [Line Items]    
Other commitment $ 0 $ 0
v3.22.2.2
COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Other Commitments [Line Items]    
Letters of credit outstanding, amount $ 41  
Letters of Credit Expiring 2022    
Other Commitments [Line Items]    
Letters of credit outstanding, amount 9  
Letters of Credit Expiring 2023    
Other Commitments [Line Items]    
Letters of credit outstanding, amount $ 32  
Minimum    
Other Commitments [Line Items]    
Remaining lease term (in years) 1 year  
Maximum    
Other Commitments [Line Items]    
Remaining lease term (in years) 4 years  
Delayed Draw Loan Commitments    
Other Commitments [Line Items]    
Other commitment $ 1,490 $ 1,273
Letter of Credit    
Other Commitments [Line Items]    
Other commitment $ 352  
v3.22.2.2
COMMITMENTS AND CONTINGENCIES - Schedule of Operating Lease Expense and Supplemental Cash Flow Information (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]        
Operating lease costs $ 2 $ 3 $ 7 $ 8
Less: sublease income (2) (3) (7) (8)
Total operating lease costs 0 0 0 0
Cash paid for amounts included in the measurement of operating lease liabilities 4 4 12 12
Operating ROU assets obtained in exchange for operating lease liabilities $ 3 $ 2 $ 6 $ 6
v3.22.2.2
COMMITMENTS AND CONTINGENCIES - Schedule of Supplemental Balance Sheet Information (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]    
Operating lease right-of-use asset $ 21 $ 27
Operating lease liabilities $ 33 $ 43
Weighted average remaining lease term 3 years 2 months 12 days 3 years 8 months 12 days
Weighted average discount rate 3.80% 310.00%
v3.22.2.2
COMMITMENTS AND CONTINGENCIES - Schedule of Future Minimum Lease Payments Under Operating Leases (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]    
2022 $ 4  
2023 16  
2024 6  
2025 6  
2026 6  
Total lease payments 38  
Less imputed interest (5)  
Operating lease liabilities $ 33 $ 43
v3.22.2.2
COMMITMENTS AND CONTINGENCIES - Schedule of Future Expected Rental Payments to be Received (Details)
$ in Millions
Sep. 30, 2022
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2022 $ 2
2023 9
2024 4
2025 4
2026 4
Total $ 23
v3.22.2.2
FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details) - Level 3
$ in Millions
Sep. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investments $ 20,977,000 $ 19,908
Yield analysis | First lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investments 9,301,000 9,456
Yield analysis | Second lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investments 3,711,000 4,432
Yield analysis | Senior subordinated loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investments 1,043,000 889
Discounted cash flow analysis | Subordinated certificates of the SDLP    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investments 1,121,000 987
Discounted cash flow analysis | Ivy Hill Asset Management, L.P.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investments 1,958,000 936
EV market multiple analysis | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investments 2,052,000 1,561
EV market multiple analysis | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investments $ 1,791,000 $ 1,647
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 10.8 7.6
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 13.4 9.5
Market yield | Yield analysis | Weighted Average | Senior subordinated loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 12.1 11.5
Market yield | Yield analysis | Minimum | First lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 5.6 2
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 6.8
Market yield | Yield analysis | Minimum | Senior subordinated loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 7.1 7.1
Market yield | Yield analysis | Maximum | First lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 23.5 16.5
Market yield | Yield analysis | Maximum | Second lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 23.4 22.9
Market yield | Yield analysis | Maximum | Senior subordinated loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 14.6 27.8
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 12 9.3
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 13.4 16.3
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 11 8.8
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 11.1 9.9
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 13.4 9.7
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 23.7 27.9
EBITDA multiple | EV market multiple analysis | Weighted Average | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 16.1 16.5
EBITDA multiple | EV market multiple analysis | Weighted Average | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 15.2 14.9
EBITDA multiple | EV market multiple analysis | Minimum | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 2.9 3.2
EBITDA multiple | EV market multiple analysis | Minimum | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 2.3 4.9
EBITDA multiple | EV market multiple analysis | Maximum | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 40.6 64.4
EBITDA multiple | EV market multiple analysis | Maximum | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 55.9 32.1
v3.22.2.2
FAIR VALUE OF FINANCIAL INSTRUMENTS- Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Cash and cash equivalents $ 257 $ 372
Restricted cash 105 114
Investments 21,339 20,009
Derivatives 40 12
Unfunded revolving and delayed draw loan commitments (54) (20)
Total    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Investments 21,334 20,004
Level 1    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Cash and cash equivalents 257 372
Restricted cash 105 114
Investments 55 0
Derivatives 0 0
Unfunded revolving and delayed draw loan commitments 0 0
Level 2    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Cash and cash equivalents 0 0
Restricted cash 0 0
Investments 302 96
Derivatives 40 12
Unfunded revolving and delayed draw loan commitments 0 0
Level 3    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Cash and cash equivalents 0 0
Restricted cash 0 0
Investments 20,977 19,908
Derivatives 0 0
Unfunded revolving and delayed draw loan commitments (54) (20)
Investments measured at net asset value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Investments $ 5 $ 5
v3.22.2.2
FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Balance at the beginning $ 21,012 $ 17,089 $ 19,908 $ 15,506
Net realized loss (22) 123 23 258
Net unrealized losses (194) 11 (346) 455
Purchases 2,059 2,517 6,730 8,124
Sales (1,099) (860) (3,305) (3,375)
Repayments (777) (1,328) (2,183) (3,537)
PIK interest and dividends 71 65 218 180
Net accretion of discount on securities 3 5 8 11
Net transfers in and/or out of Level 3 (76) 44 (76) 44
Balance at the end $ 20,977 $ 17,666 $ 20,977 $ 17,666
v3.22.2.2
FAIR VALUE OF FINANCIAL INSTRUMENTS- Narrative (Details) - Level 3 - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Unrealized appreciation (depreciation) on investments $ (179) $ 23 $ (179) $ 23
Net unrealized gains (losses) $ (197) $ 107 $ (302) $ 570
v3.22.2.2
FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details) - USD ($)
Sep. 30, 2022
Dec. 31, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding $ 11,853,000,000 $ 11,061,000,000
Convertible Debt | 2022 Convertible Notes (principal amount outstanding of $0 and $388, respectively)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 0 388,000,000
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 $750)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 750,000,000 750,000,000
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 and $0, respectively)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 500,000,000 0
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
Line of Credit | Revolving Credit Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 1,787,000,000 1,507,000,000
Line of Credit | Revolving Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 932,000,000 762,000,000
Line of Credit | SMBC Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 456,000,000 401,000,000
Line of Credit | BNP Funding Facility    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Principal amount of debt outstanding 175,000,000 0
Carrying value    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 11,816,000,000 11,020,000,000
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   1,507,000,000
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   762,000,000
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
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   0
Carrying value | Convertible Debt | 2022 Convertible Notes (principal amount outstanding of $0 and $388, respectively)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 0 388,000,000
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 399,000,000 395,000,000
Carrying value | Senior Notes | 2023 Notes (principal amount outstanding of $750)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 750,000,000 748,000,000
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 898,000,000 897,000,000
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 597,000,000 596,000,000
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 1,258,000,000 1,260,000,000
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 1,144,000,000 1,143,000,000
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 990,000,000 988,000,000
Carrying value | Senior Notes | 2027 Notes (principal amount outstanding of $500 and $0, respectively)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 494,000,000 0
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 1,246,000,000 1,246,000,000
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 690,000,000 689,000,000
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 1,787,000,000  
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 932,000,000  
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 456,000,000  
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 175,000,000  
Fair value    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 10,882,000,000 11,351,000,000
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 1,787,000,000 1,507,000,000
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 932,000,000 762,000,000
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 456,000,000 401,000,000
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 175,000,000 0
Fair value | Convertible Debt | 2022 Convertible Notes (principal amount outstanding of $0 and $388, respectively)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 0 433,000,000
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 412,000,000 457,000,000
Fair value | Senior Notes | 2023 Notes (principal amount outstanding of $750)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 747,000,000 768,000,000
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 872,000,000 952,000,000
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 567,000,000 637,000,000
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 1,143,000,000 1,297,000,000
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 1,048,000,000 1,213,000,000
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 839,000,000 989,000,000
Fair value | Senior Notes | 2027 Notes (principal amount outstanding of $500 and $0, respectively)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair value disclosures of long-term debt 419,000,000 0
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 985,000,000 1,248,000,000
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 $ 500,000,000 $ 687,000,000
v3.22.2.2
STOCKHOLDERS’ EQUITY - Schedule of Common Shares Issued and Sold (Details)
$ / shares in Units, shares in Millions, $ in Millions
 9 Months Ended
Sep. 30, 2022
USD ($)
$ / shares
shares
Subsidiary, Sale of Stock [Line Items]  
Number of Shares Issued | shares 40.0
Gross Proceeds $ 835.4
Underwriting Fees/Offering Expenses 26.6
Net Proceeds $ 808.8
Public offerings  
Subsidiary, Sale of Stock [Line Items]  
Number of Shares Issued | shares 20.4
Gross Proceeds $ 432.0
Underwriting Fees/Offering Expenses 22.0
Net Proceeds $ 410.0
Average Offering Price Per Share | $ / shares $ 20.13
“At the market” offerings  
Subsidiary, Sale of Stock [Line Items]  
Number of Shares Issued | shares 19.6
Gross Proceeds $ 403.4
Underwriting Fees/Offering Expenses 4.6
Net Proceeds $ 398.8
Average Offering Price Per Share | $ / shares $ 20.57
Over-allotment option 1  
Subsidiary, Sale of Stock [Line Items]  
Number of Shares Issued | shares 11.2
Average Offering Price Per Share | $ / shares $ 21.06
Over-allotment option two  
Subsidiary, Sale of Stock [Line Items]  
Number of Shares Issued | shares 9.2
Average Offering Price Per Share | $ / shares $ 19.00
v3.22.2.2
STOCKHOLDERS’ EQUITY - Narrative (Details)
 9 Months Ended
Sep. 30, 2022
USD ($)
Subsidiary, Sale of Stock [Line Items]  
Authorized amount of stock repurchase program $ 500,000,000
Stock available for repurchase under the stock repurchase program 500,000,000
“At the market” offerings  
Subsidiary, Sale of Stock [Line Items]  
Maximum issuance of common stock 500,000,000
Stock available for issuance $ 413,000,000
v3.22.2.2
EARNINGS PER SHARE (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Earnings Per Share [Abstract]        
Net increase in stockholders’ equity resulting from operations—basic $ 104 $ 334 $ 426 $ 1,185
Adjustment for interest expense on 2014 Convertible Notes 4 0 13 0
Net increase in stockholders’ equity resulting from operations—diluted $ 108 $ 334 $ 439 $ 1,185
Weighted Average Number of Shares Outstanding, Basic 503,000,000 453,000,000 492,000,000 441,000,000
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities 20,000,000 0 20,000,000 0
Weighted Average Number of Shares Outstanding, Diluted 523,000,000 453,000,000 512,000,000 441,000,000
Net increase in stockholders’ equity resulting from operations per share—basic (in usd per share) $ 0.21 $ 0.73 $ 0.86 $ 2.68
Net increase in stockholders’ equity resulting from operations per share—diluted (in usd per share) $ 0.21 $ 0.73 $ 0.86 $ 2.68
v3.22.2.2
DIVIDENDS AND DISTRIBUTIONS - Schedule of Dividends Declared (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Dividends Payable [Line Items]                              
Cash dividends declared (in usd per share)             $ 0.46 $ 0.45 $ 0.45 $ 0.41 $ 0.41 $ 0.40 $ 0.40 $ 1.36 $ 1.21
Total amount                           $ 677,000 $ 541,000
July 26, 2022                              
Dividends Payable [Line Items]                              
Cash dividends declared (in usd per share) $ 0.43                            
Total amount $ 219,000                            
February 9, 2022                              
Dividends Payable [Line Items]                              
Cash dividends declared (in usd per share) $ 0.03 $ 0.03 $ 0.42                        
Total amount $ 15,000 $ 15,000 $ 205,000                        
February 9, 2022                              
Dividends Payable [Line Items]                              
Cash dividends declared (in usd per share)     $ 0.03                        
Total amount     $ 15,000                        
April 26, 2022                              
Dividends Payable [Line Items]                              
Cash dividends declared (in usd per share)   $ 0.42                          
Total amount   $ 208,000                          
July 28, 2021                              
Dividends Payable [Line Items]                              
Cash dividends declared (in usd per share)       $ 0.41                      
Total amount       $ 189,000                      
April 28, 2021                              
Dividends Payable [Line Items]                              
Cash dividends declared (in usd per share)         $ 0.40                    
Total amount         $ 177,000                    
February 10, 2021                              
Dividends Payable [Line Items]                              
Cash dividends declared (in usd per share)           $ 0.40                  
Total amount           $ 175,000                  
v3.22.2.2
DIVIDENDS AND DISTRIBUTIONS - Schedule of Dividends Payable (Details) - USD ($)
$ / shares in Units, $ in Millions
 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Equity [Abstract]    
Shares issued 600,000 1,500,000
Average issue price per share (in dollars per share) $ 20.95 $ 19.52
Shares purchased by plan agent to satisfy dividends declared and payable during the period for stockholders $ 1.6 $ 0.0
Average purchase price per share (in dollars per share) $ 17.85 $ 0
v3.22.2.2
RELATED PARTY TRANSACTIONS (Details) - Controlled Affiliate - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Expense Reimbursement        
Related Party Transaction [Line Items]        
Related party transaction amounts payable $ 1 $ 1 $ 3 $ 4
Proprietary Portfolio Management Software Agreement        
Related Party Transaction [Line Items]        
Related party transaction amounts payable $ 0 $ 0 $ 0 $ 0
v3.22.2.2
FINANCIAL HIGHLIGHTS - Schedule of Financial Highlights (Details) - USD ($)
$ / shares in Units, $ in Millions
 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Investment Company, Financial Highlights [Roll Forward]                
Net asset value, beginning of period (in dollars per share) $ 18.96 $ 16.97            
Issuances of common stock (in dollars per share) 0.10 0.07            
Net investment income for period (in dollars per share) 1.51 1.13            
Net realized and unrealized (losses) for period (in dollars per share) (0.65) 1.56            
Net increase in stockholders' equity (in dollars per share) 0.96 2.76            
Total distributions to stockholders (in dollars per share) (1.36) (1.21)            
Net asset value, end of period (in dollars per share) 18.56 18.52            
Per share market value at end of period (in dollars per share) $ 16.88 $ 20.33     $ 21.19     $ 16.89
Total return based on market value (14.44%) 27.53%            
Total return based on net asset value 2.74% 20.87%            
Shares outstanding at end of period (in shares) 508,000,000 461,000,000     468,000,000      
Ratio/Supplemental Data:                
Total stockholders’ equity $ 9,436 $ 8,537 $ 9,335 $ 9,379 $ 8,868 $ 8,078 $ 7,632 $ 7,176
Ratio of operating expenses to average net assets 9.77% 4.32%            
Ratio of net investment income to average net assets 10.73% 3.13%            
Portfolio turnover rate 36.00% 54.00%            
v3.22.2.2
FINANCIAL HIGHLIGHTS - Schedule of Financial Highlights, Additional Information (Details) - $ / shares
 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 9.77% 4.32%    
Additional dividends declared (in dollars per share) $ 0.09      
Per share market value at end of period (in dollars per share) 16.88 $ 20.33 $ 21.19 $ 16.89
Total distributions to stockholders (in dollars per share) $ 1.36 $ 1.21    
Base management fees        
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 3.26% 1.11%    
Income based fees and capital gains incentive fees        
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 1.54% 1.42%    
Cost of borrowing        
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 4.54% 1.60%    
Other operating expenses        
Investment Company, Financial Highlights [Line Items]        
Ratio of operating expenses to average net assets 0.43% 0.19%    
v3.22.2.2
N-2
 9 Months Ended
Sep. 30, 2022
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 in Part I, “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2021 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, 2021, 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.

The Russian invasion of Ukraine may have a material adverse impact on us and our portfolio companies.

On February 24, 2022, the President of Russia, Vladimir Putin, announced a military invasion of Ukraine. In response, countries worldwide, including the United States, have imposed sanctions against Russia on certain businesses and individuals, including, but not limited to, those in the banking, import and export sectors. This invasion has led, is currently leading, and for an unknown period of time will continue to lead to disruptions in local, regional, national, and global markets and economies affected thereby. These disruptions caused by the invasion have included, and may continue to include, political, social, and economic disruptions and uncertainties and material increases in certain commodity prices that may affect our business operations or the business operations of our portfolio companies.

We are exposed to risks associated with changes in interest rates, including the current rising interest rate environment.

General interest rate fluctuations may have a substantial negative impact on our investments and our investment returns and, accordingly, may have a material adverse effect on our investment objective and our net investment income.

Because we borrow money and may issue debt securities or preferred stock to make investments, our net investment income is dependent upon the difference between the rate at which we borrow funds or pay interest or dividends on such debt securities or preferred stock and the rate at which we invest these funds. In this period of rising interest rates, our interest income will increase as the majority of our portfolio bears interest at variable rates while our cost of funds will also increase, to a lesser extent, given the majority of our indebtedness bears interest at fixed rates, with the net impact being an increase to our net investment income, see “Item 3. Qualitative and Quantitative Disclosures About Market Risk.” Conversely, if interest rates decrease we may earn less interest income from investments and our cost of funds will also decrease, to a lesser extent, resulting in lower net investment income. From time to time, we may also enter into certain hedging transactions to mitigate our exposure to changes in interest rates. In the past, we have entered into certain hedging transactions, such as interest rate swap agreements, to mitigate our exposure to adverse fluctuations in interest rates, and we may do so again in the future. However, we cannot assure you that such transactions will be successful in mitigating our exposure to interest rate risk. There can be no assurance that a significant change in market interest rates will not have a material adverse effect on our net investment income.

Our portfolio primarily consists of fixed and floating rate investments. Market prices tend to fluctuate more for fixed-rate securities that have longer maturities. Although we have no policy governing the maturities of our investments, under current market conditions we expect that we will invest in a portfolio of debt generally having maturities of up to 10 years. Market prices for debt that pays a fixed rate of return tend to decline as interest rates rise. This means that we are subject to greater risk (other things being equal) than a fund invested solely in shorter-term, fixed-rate securities. Market prices for floating rate investments may also fluctuate in rising rate environments with prices tending to decline when credit spreads widen. A decline in the prices of the debt we own could adversely affect our net assets resulting from operations and the market price of our common stock.
Rising interest rates may also increase the cost of debt for our underlying portfolio companies, which could adversely impact their financial performance and ability to meet ongoing obligations to us. Also, an increase in interest rates available to investors could make an investment in our common stock less attractive if we are not able to pay dividends at a level that provides a similar return, which could reduce the value of our common stock.

Inflation has adversely affected and may continue to adversely affect the business, results of operations and financial condition of our portfolio companies.

Certain of our portfolio companies are in industries that have been impacted by inflation. Recent inflationary pressures have increased the costs of labor, energy and raw materials and have adversely affected consumer spending, economic growth and our portfolio companies’ operations. If such portfolio companies are unable to pass any increases in their costs of operations along to their customers, it could adversely affect their operating results and impact their ability to pay interest and principal on our loans, particularly if interest rates rise in response to inflation. In addition, any projected future decreases in our portfolio companies’ operating results due to inflation could adversely impact the fair value of those investments. Any decreases in the fair value of our investments could result in future realized or unrealized losses and therefore reduce our net assets resulting from operations. Additionally, the Federal Reserve has raised, and has indicated its intent to continue raising, certain benchmark interest rates in an effort to combat inflation. See “—We are exposed to risks associated with changes in interest rates, including the current rising interest rate environment.”
Russian Invasion Of Ukraine [Member]  
General Description of Registrant [Abstract]  
Risk [Text Block]
The Russian invasion of Ukraine may have a material adverse impact on us and our portfolio companies.

On February 24, 2022, the President of Russia, Vladimir Putin, announced a military invasion of Ukraine. In response, countries worldwide, including the United States, have imposed sanctions against Russia on certain businesses and individuals, including, but not limited to, those in the banking, import and export sectors. This invasion has led, is currently leading, and for an unknown period of time will continue to lead to disruptions in local, regional, national, and global markets and economies affected thereby. These disruptions caused by the invasion have included, and may continue to include, political, social, and economic disruptions and uncertainties and material increases in certain commodity prices that may affect our business operations or the business operations of our portfolio companies.

We are exposed to risks associated with changes in interest rates, including the current rising interest rate environment.

General interest rate fluctuations may have a substantial negative impact on our investments and our investment returns and, accordingly, may have a material adverse effect on our investment objective and our net investment income.

Because we borrow money and may issue debt securities or preferred stock to make investments, our net investment income is dependent upon the difference between the rate at which we borrow funds or pay interest or dividends on such debt securities or preferred stock and the rate at which we invest these funds. In this period of rising interest rates, our interest income will increase as the majority of our portfolio bears interest at variable rates while our cost of funds will also increase, to a lesser extent, given the majority of our indebtedness bears interest at fixed rates, with the net impact being an increase to our net investment income, see “Item 3. Qualitative and Quantitative Disclosures About Market Risk.” Conversely, if interest rates decrease we may earn less interest income from investments and our cost of funds will also decrease, to a lesser extent, resulting in lower net investment income. From time to time, we may also enter into certain hedging transactions to mitigate our exposure to changes in interest rates. In the past, we have entered into certain hedging transactions, such as interest rate swap agreements, to mitigate our exposure to adverse fluctuations in interest rates, and we may do so again in the future. However, we cannot assure you that such transactions will be successful in mitigating our exposure to interest rate risk. There can be no assurance that a significant change in market interest rates will not have a material adverse effect on our net investment income.

Our portfolio primarily consists of fixed and floating rate investments. Market prices tend to fluctuate more for fixed-rate securities that have longer maturities. Although we have no policy governing the maturities of our investments, under current market conditions we expect that we will invest in a portfolio of debt generally having maturities of up to 10 years. Market prices for debt that pays a fixed rate of return tend to decline as interest rates rise. This means that we are subject to greater risk (other things being equal) than a fund invested solely in shorter-term, fixed-rate securities. Market prices for floating rate investments may also fluctuate in rising rate environments with prices tending to decline when credit spreads widen. A decline in the prices of the debt we own could adversely affect our net assets resulting from operations and the market price of our common stock.
Rising interest rates may also increase the cost of debt for our underlying portfolio companies, which could adversely impact their financial performance and ability to meet ongoing obligations to us. Also, an increase in interest rates available to investors could make an investment in our common stock less attractive if we are not able to pay dividends at a level that provides a similar return, which could reduce the value of our common stock.

Inflation has adversely affected and may continue to adversely affect the business, results of operations and financial condition of our portfolio companies.

Certain of our portfolio companies are in industries that have been impacted by inflation. Recent inflationary pressures have increased the costs of labor, energy and raw materials and have adversely affected consumer spending, economic growth and our portfolio companies’ operations. If such portfolio companies are unable to pass any increases in their costs of operations along to their customers, it could adversely affect their operating results and impact their ability to pay interest and principal on our loans, particularly if interest rates rise in response to inflation. In addition, any projected future decreases in our portfolio companies’ operating results due to inflation could adversely impact the fair value of those investments. Any decreases in the fair value of our investments could result in future realized or unrealized losses and therefore reduce our net assets resulting from operations. Additionally, the Federal Reserve has raised, and has indicated its intent to continue raising, certain benchmark interest rates in an effort to combat inflation. See “—We are exposed to risks associated with changes in interest rates, including the current rising interest rate environment.”