v3.24.1
Cover Page - USD ($)
12 Months Ended
Dec. 31, 2023
Mar. 20, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K/A    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
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 Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
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    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 10,407,974,589
Entity Common Stock, Shares Outstanding   606,777,220  
Documents Incorporated by Reference Portions of the registrant’s Proxy Statement for its 2024 Annual Meeting of Stockholders to be filed not later than 120 days after the end of the fiscal year covered by this Amendment No. 1 to the Annual Report on Form 10-K for the fiscal year ended December 31, 2023 are incorporated by reference into Part III of this Amendment No. 1.    
Entity Central Index Key 0001287750    
Amendment Flag false    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
v3.24.1
Audit Information
12 Months Ended
Dec. 31, 2023
Audit Information [Abstract]  
Auditor Name KPMG LLP
Auditor Location Los Angeles, CA
Auditor Firm ID 185