Debt - CLO VI (Details) - USD ($)	Mar. 05, 2024	Jul. 18, 2023	May 05, 2021	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Outstanding Principal				$ 7,578,620,000	$ 7,201,927,000
CLO VI Issuer
Debt Instrument [Line Items]
Value of outstanding preferred shares	$ 137,800,000
Preferred equity investments | CLO VI Issuer
Debt Instrument [Line Items]
Value of shares issued			$ 137,800,000
Shares issued (in shares)			137,775
Issue price (in usd per share)			$ 1,000
Middle Market Loans | CLO VI Issuer
Debt Instrument [Line Items]
Principal amount			$ 205,600,000
Middle Market Loans | ORCC Financing IV, LLC | CLO VI Issuer
Debt Instrument [Line Items]
Principal amount			164,700,000
CLO VI | Secured Debt
Debt Instrument [Line Items]
Principal amount			$ 397,800,000		260,000,000
Outstanding Principal					$ 260,000,000
CLO VI | Secured Debt | CLO VI Issuer
Debt Instrument [Line Items]
Debt repurchased	$ 260,000,000
Redemption price, percentage	100.00%
Outstanding Principal	$ 0
CLO VI, Class A Notes | Secured Debt
Debt Instrument [Line Items]
Principal amount		$ 224,000,000
Interest rate, stated percentage		1.45%
CLO VI, Class B-1 Notes | Secured Debt
Debt Instrument [Line Items]
Principal amount		$ 26,000,000
Interest rate, stated percentage		1.75%
CLO VI, Class B-F Notes | Secured Debt
Debt Instrument [Line Items]
Principal amount		$ 10,000,000
Interest rate, stated percentage		2.83%