Fair Value of Investments - Schedule of Carrying and Fair Values of the Company’s Debt Obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Net Carrying Value	$ 7,905,429	$ 9,272,214
Debt Issuance Costs	(101,772)	(93,186)
Level 1
Debt Instrument [Line Items]
Net Carrying Value	0	0
Level 2
Debt Instrument [Line Items]
Net Carrying Value	5,268,750	4,967,188
Level 3
Debt Instrument [Line Items]
Net Carrying Value	2,636,679	4,305,026
Net Carrying Value
Debt Instrument [Line Items]
Net Carrying Value	7,903,533	9,300,076
Fair Value
Debt Instrument [Line Items]
Net Carrying Value	7,905,429	9,272,214
SPV Asset Facility II \| Line of Credit
Debt Instrument [Line Items]
Debt Issuance Costs	(5,295)	(5,562)
SPV Asset Facility II \| Net Carrying Value \| Line of Credit
Debt Instrument [Line Items]
Net Carrying Value	250,905	156,138
SPV Asset Facility II \| Fair Value \| Line of Credit
Debt Instrument [Line Items]
Net Carrying Value	250,905	156,138
SPV Asset Facility V \| Line of Credit
Debt Instrument [Line Items]
Debt Issuance Costs	(4,412)	(5,001)
SPV Asset Facility V \| Net Carrying Value \| Line of Credit
Debt Instrument [Line Items]
Net Carrying Value	426,088	378,999
SPV Asset Facility V \| Fair Value \| Line of Credit
Debt Instrument [Line Items]
Net Carrying Value	426,088	378,999
SPV Asset Facility VI \| Line of Credit
Debt Instrument [Line Items]
Debt Issuance Costs	(3,530)	(4,041)
SPV Asset Facility VI \| Net Carrying Value \| Line of Credit
Debt Instrument [Line Items]
Net Carrying Value	306,470	295,959
SPV Asset Facility VI \| Fair Value \| Line of Credit
Debt Instrument [Line Items]
Net Carrying Value	306,470	295,959
SPV Asset Facility VII \| Line of Credit
Debt Instrument [Line Items]
Debt Issuance Costs	0	(1,601)
SPV Asset Facility VII \| Net Carrying Value \| Line of Credit
Debt Instrument [Line Items]
Net Carrying Value	0	208,399
SPV Asset Facility VII \| Fair Value \| Line of Credit
Debt Instrument [Line Items]
Net Carrying Value	0	208,399
CLO I \| Secured Debt
Debt Instrument [Line Items]
Debt Issuance Costs	0	(3,489)
CLO I \| Net Carrying Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	0	386,511
CLO I \| Fair Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	0	386,511
CLO III \| Secured Debt
Debt Instrument [Line Items]
Debt Issuance Costs	(1,638)	(1,727)
CLO III \| Net Carrying Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	258,362	258,273
CLO III \| Fair Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	258,362	258,273
CLO IV \| Secured Debt
Debt Instrument [Line Items]
Debt Issuance Costs	(2,782)	(3,346)
CLO IV \| Net Carrying Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	217,166	272,117
CLO IV \| Fair Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	217,166	272,117
CLO V \| Secured Debt
Debt Instrument [Line Items]
Debt Issuance Costs	(1,939)	(2,062)
CLO V \| Net Carrying Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	507,686	507,563
CLO V \| Fair Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	507,686	507,563
CLO VII \| Secured Debt
Debt Instrument [Line Items]
Debt Issuance Costs	(2,041)	(2,127)
CLO VII \| Net Carrying Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	328,459	328,373
CLO VII \| Fair Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	328,459	328,373
CLO X \| Secured Debt
Debt Instrument [Line Items]
Debt Issuance Costs	(1,833)	(1,797)
CLO X \| Net Carrying Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	270,167	270,203
CLO X \| Fair Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	270,167	270,203
CLO XIV \| Secured Debt
Debt Instrument [Line Items]
Debt Issuance Costs	0	(1,578)
CLO XIV \| Net Carrying Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	0	258,422
CLO XIV \| Fair Value \| Secured Debt
Debt Instrument [Line Items]
Net Carrying Value	0	258,422
2026 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Debt Issuance Costs	0	(91)
2026 Notes \| Net Carrying Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	0	499,909
2026 Notes \| Fair Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	0	498,750
July 2026 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Debt Issuance Costs	(197)	(2,717)
July 2026 Notes \| Net Carrying Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	999,803	997,283
July 2026 Notes \| Fair Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	1,000,000	992,500
2027 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Debt Issuance Costs	(9,073)	(2,117)
2027 Notes \| Net Carrying Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	489,826	483,987
2027 Notes \| Fair Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	492,500	488,750
April 2027 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Debt Issuance Costs	(665)	(1,078)
April 2027 Notes \| Net Carrying Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	324,335	323,922
April 2027 Notes \| Fair Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	320,125	317,688
July 2027 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Debt Issuance Costs	(962)	(1,389)
July 2027 Notes \| Net Carrying Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	249,038	248,611
July 2027 Notes \| Fair Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	250,000	250,000
2028 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Debt Issuance Costs	(5,251)	(6,549)
2028 Notes \| Net Carrying Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	844,749	843,451
2028 Notes \| Fair Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	805,375	803,250
June 2028 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Debt Issuance Costs	(469)	(585)
June 2028 Notes \| Net Carrying Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	99,531	99,415
June 2028 Notes \| Fair Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	100,000	100,000
September 2028 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Debt Issuance Costs	(2,861)	0
September 2028 Notes \| Net Carrying Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	393,582	0
September 2028 Notes \| Fair Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	404,000	0
2029 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Debt Issuance Costs	(6,965)	(8,373)
2029 Notes \| Net Carrying Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	986,672	1,002,667
2029 Notes \| Fair Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	1,000,000	1,010,000
2030 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Debt Issuance Costs	(9,041)	(10,025)
2030 Notes \| Net Carrying Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	486,848	495,805
2030 Notes \| Fair Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	498,750	506,250
2031 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Debt Issuance Costs	(8,694)	0
2031 Notes \| Net Carrying Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	392,470	0
2031 Notes \| Fair Value \| Unsecured debt investments
Debt Instrument [Line Items]
Net Carrying Value	398,000	0
Revolving Credit Facility \| Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Debt Issuance Costs	(34,124)	(27,931)
Revolving Credit Facility \| Revolving Credit Facility \| Net Carrying Value \| Line of Credit
Debt Instrument [Line Items]
Net Carrying Value	71,376	984,069
Revolving Credit Facility \| Revolving Credit Facility \| Fair Value \| Line of Credit
Debt Instrument [Line Items]
Net Carrying Value	$ 71,376	$ 984,069