Borrowings - CLO (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total investments at fair value	$ 68,419,777	$ 50,743,911
Cash and cash equivalents	1,650,679	1,481,770
Assets	71,283,570	53,317,236
Interest payable	398,004	322,597
Total liabilities	32,427,807	24,782,799
Unamortized debt issuance costs	136,810	91,634
2024-1 Issuer
Debt Instrument [Line Items]
Total investments at fair value	5,866,717	5,001,266
Cash and cash equivalents	304,999	218,778
Restricted cash	304,999
Assets	6,216,386	5,259,553
Carrying Value (net of unamortized issuance costs)	4,172,039	3,626,238
Interest payable	51,890	49,968
Total liabilities	4,223,929	3,676,206
Unamortized debt issuance costs	20,261	17,062
Non-controlled/non-affiliated investments
Debt Instrument [Line Items]
Total investments at fair value	65,689,987	48,242,813
Non-controlled/non-affiliated investments | 2024-1 Issuer
Debt Instrument [Line Items]
Total investments at fair value	5,866,717	5,001,266
Interest receivable from non-controlled/non-affiliated investments	$ 44,670	$ 39,509