Fair Value of Investments - Schedule of Carrying and Fair Values of the Company’s Debt Obligations (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Debt obligations	$ 7,421,044	$ 6,887,768
Debt Issuance Costs	(84,363)	(81,492)
Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	7,457,702	7,077,088
Fair Value
Debt Instrument [Line Items]
Debt obligations	7,421,044	6,887,768
Level 1
Debt Instrument [Line Items]
Debt obligations	0	0
Level 2
Debt Instrument [Line Items]
Debt obligations	4,660,938	3,901,938
Level 3
Debt Instrument [Line Items]
Debt obligations	2,760,106	2,985,830
Line of Credit | SPV Asset Facility II
Debt Instrument [Line Items]
Debt Issuance Costs	(3,773)	(4,272)
Line of Credit | SPV Asset Facility II | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	296,227	245,728
Line of Credit | SPV Asset Facility II | Fair Value
Debt Instrument [Line Items]
Debt obligations	296,227	245,728
Secured Debt | CLO I
Debt Instrument [Line Items]
Debt Issuance Costs	(3,817)	(2,394)
Secured Debt | CLO I | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	386,183	274,213
Secured Debt | CLO I | Fair Value
Debt Instrument [Line Items]
Debt obligations	386,183	274,213
Secured Debt | CLO II
Debt Instrument [Line Items]
Debt Issuance Costs	(2,230)	(2,533)
Secured Debt | CLO II | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	257,770	257,467
Secured Debt | CLO II | Fair Value
Debt Instrument [Line Items]
Debt obligations	257,770	257,467
Secured Debt | CLO III
Debt Instrument [Line Items]
Debt Issuance Costs	(1,862)	(1,676)
Secured Debt | CLO III | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	258,138	258,324
Secured Debt | CLO III | Fair Value
Debt Instrument [Line Items]
Debt obligations	258,138	258,324
Secured Debt | CLO IV
Debt Instrument [Line Items]
Debt Issuance Costs	(3,806)	(4,316)
Secured Debt | CLO IV | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	288,694	288,184
Secured Debt | CLO IV | Fair Value
Debt Instrument [Line Items]
Debt obligations	288,694	288,184
Secured Debt | CLO V
Debt Instrument [Line Items]
Debt Issuance Costs	(2,310)	(2,625)
Secured Debt | CLO V | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	507,315	507,000
Secured Debt | CLO V | Fair Value
Debt Instrument [Line Items]
Debt obligations	507,315	507,000
Secured Debt | CLO VI
Debt Instrument [Line Items]
Debt Issuance Costs	0	(1,575)
Secured Debt | CLO VI | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	0	258,425
Secured Debt | CLO VI | Fair Value
Debt Instrument [Line Items]
Debt obligations	0	258,425
Secured Debt | CLO VII
Debt Instrument [Line Items]
Debt Issuance Costs	(1,612)	(1,862)
Secured Debt | CLO VII | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	237,538	237,288
Secured Debt | CLO VII | Fair Value
Debt Instrument [Line Items]
Debt obligations	237,538	237,288
Secured Debt | CLO X
Debt Instrument [Line Items]
Debt Issuance Costs	(1,678)	(1,874)
Secured Debt | CLO X | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	258,322	258,126
Secured Debt | CLO X | Fair Value
Debt Instrument [Line Items]
Debt obligations	258,322	258,126
Unsecured debt | 2024 Notes
Debt Instrument [Line Items]
Debt Issuance Costs	0	(657)
Unsecured debt | 2024 Notes | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	0	395,942
Unsecured debt | 2024 Notes | Fair Value
Debt Instrument [Line Items]
Debt obligations	0	399,000
Unsecured debt | 2025 Notes
Debt Instrument [Line Items]
Debt Issuance Costs	(421)	(2,120)
Unsecured debt | 2025 Notes | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	424,579	422,880
Unsecured debt | 2025 Notes | Fair Value
Debt Instrument [Line Items]
Debt obligations	423,938	413,313
Unsecured debt | July 2025 Notes
Debt Instrument [Line Items]
Debt Issuance Costs	(1,048)	(2,882)
Unsecured debt | July 2025 Notes | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	498,952	497,118
Unsecured debt | July 2025 Notes | Fair Value
Debt Instrument [Line Items]
Debt obligations	496,250	478,750
Unsecured debt | 2026 Notes
Debt Instrument [Line Items]
Debt Issuance Costs	(2,428)	(4,680)
Unsecured debt | 2026 Notes | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	497,572	495,320
Unsecured debt | 2026 Notes | Fair Value
Debt Instrument [Line Items]
Debt obligations	495,000	483,750
Unsecured debt | July 2026 Notes
Debt Instrument [Line Items]
Debt Issuance Costs	(7,640)	(12,403)
Unsecured debt | July 2026 Notes | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	992,360	987,597
Unsecured debt | July 2026 Notes | Fair Value
Debt Instrument [Line Items]
Debt obligations	970,000	930,000
Unsecured debt | 2027 Notes
Debt Instrument [Line Items]
Debt Issuance Costs	(4,101)	(6,037)
Unsecured debt | 2027 Notes | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	465,449	454,017
Unsecured debt | 2027 Notes | Fair Value
Debt Instrument [Line Items]
Debt obligations	476,250	451,250
Unsecured debt | 2028 Notes
Debt Instrument [Line Items]
Debt Issuance Costs	(9,112)	(11,616)
Unsecured debt | 2028 Notes | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	840,888	838,384
Unsecured debt | 2028 Notes | Fair Value
Debt Instrument [Line Items]
Debt obligations	782,000	745,875
Unsecured debt | 2029 Notes
Debt Instrument [Line Items]
Debt Issuance Costs	(16,099)	0
Unsecured debt | 2029 Notes | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	977,796	0
Unsecured debt | 2029 Notes | Fair Value
Debt Instrument [Line Items]
Debt obligations	1,017,500	0
Revolving Credit Facility | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Debt Issuance Costs	(22,426)	(17,970)
Revolving Credit Facility | Line of Credit | Revolving Credit Facility | Net Carrying Value
Debt Instrument [Line Items]
Debt obligations	269,919	401,075
Revolving Credit Facility | Line of Credit | Revolving Credit Facility | Fair Value
Debt Instrument [Line Items]
Debt obligations	$ 269,919	$ 401,075