Condensed Consolidated Schedule of Investments - Derivatives (Parenthetical) € in Thousands, £ in Thousands, kr in Thousands, $ in Thousands, $ in Thousands		3 Months Ended				12 Months Ended
		Mar. 31, 2025 USD ($)		Mar. 31, 2024 USD ($)	[2]	Dec. 31, 2024 USD ($)	Mar. 31, 2025 CAD ($)	Mar. 31, 2025 EUR (€)	Mar. 31, 2025 GBP (£)	Mar. 31, 2025 SEK (kr)	Dec. 31, 2024 CAD ($)	Dec. 31, 2024 EUR (€)	Dec. 31, 2024 GBP (£)	Dec. 31, 2024 SEK (kr)
Open Forward Foreign Currency Contract [Line Items]
Notional		$ 69,081				$ 700,000
Notional		1,709,402				571,016
Unrealized Appreciation (Depreciation)		153				2,401
Investment at cost		12,952,035				13,193,219
Investments at fair value		$ 12,834,206				$ 13,092,518
Investment, Type [Extensible Enumeration]		Derivative [Member]				Derivative [Member]	Derivative [Member]	Derivative [Member]	Derivative [Member]	Derivative [Member]	Derivative [Member]	Derivative [Member]	Derivative [Member]	Derivative [Member]
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 1
Open Forward Foreign Currency Contract [Line Items]
Notional		$ 55,804				$ 56,412
Notional							$ 80,000				$ 80,000
Unrealized Appreciation (Depreciation)		(47)				719
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 2
Open Forward Foreign Currency Contract [Line Items]
Notional		71,312				68,801
Notional | €								€ 65,250				€ 65,250
Unrealized Appreciation (Depreciation)		571				1,043
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 3
Open Forward Foreign Currency Contract [Line Items]
Notional		38,090				37,395
Notional | £									£ 29,500				£ 29,500
Unrealized Appreciation (Depreciation)		63				482
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 4
Open Forward Foreign Currency Contract [Line Items]
Notional		13,277				8,408
Notional | kr										kr 133,956				kr 91,000
Unrealized Appreciation (Depreciation)		(106)				157
Foreign Currency Forward Contracts
Open Forward Foreign Currency Contract [Line Items]
Unrealized Appreciation (Depreciation)		481				2,401
Interest Rate Swap
Open Forward Foreign Currency Contract [Line Items]
Notional		0				700,000
Notional		1,600,000				400,000
Investments at fair value		23,346				(3,169)
Upfront Payments / Receipts		0				$ 0
Change in Unrealized Appreciation (Depreciation)		$ 26,517	[1]	$ (3,169)
Interest Rate Swap 1
Open Forward Foreign Currency Contract [Line Items]
Company Receives		5.88%				5.88%	5.88%	5.88%	5.88%	5.88%	5.88%	5.88%	5.88%	5.88%
Company Pays		1.38%				1.38%	1.38%	1.38%	1.38%	1.38%	1.38%	1.38%	1.38%	1.38%
Investment at cost		$ 400,000				$ 400,000
Investments at fair value		13,832				3,995
Upfront Payments / Receipts		0				$ 0
Change in Unrealized Appreciation (Depreciation)		$ 9,838	[1]	3,995
Interest Rate Swap 2
Open Forward Foreign Currency Contract [Line Items]
Company Receives		5.35%				5.35%	5.35%	5.35%	5.35%	5.35%	5.35%	5.35%	5.35%	5.35%
Company Pays		1.65%				1.65%	1.65%	1.65%	1.65%	1.65%	1.65%	1.65%	1.65%	1.65%
Investment at cost		$ 400,000				$ 400,000
Investments at fair value		4,395				(5,855)
Upfront Payments / Receipts		0				$ 0
Change in Unrealized Appreciation (Depreciation)		$ 10,251	[1]	(5,855)
Interest Rate Swap 3
Open Forward Foreign Currency Contract [Line Items]
Company Receives		5.35%				5.35%	5.35%	5.35%	5.35%	5.35%	5.35%	5.35%	5.35%	5.35%
Company Pays		1.39%				1.39%	1.39%	1.39%	1.39%	1.39%	1.39%	1.39%	1.39%	1.39%
Investment at cost		$ 300,000				$ 300,000
Investments at fair value		1,895				(1,309)
Upfront Payments / Receipts		0				$ 0
Change in Unrealized Appreciation (Depreciation)		$ 3,204	[1]	$ (1,309)
Interest Rate Swap 4
Open Forward Foreign Currency Contract [Line Items]
Company Receives		5.30%					5.30%	5.30%	5.30%	5.30%
Company Pays		1.46%					1.46%	1.46%	1.46%	1.46%
Investment at cost		$ 500,000
Investments at fair value		3,224
Upfront Payments / Receipts		0
Change in Unrealized Appreciation (Depreciation)	[1]	$ 3,224

[1] For interest rate swaps designated in qualifying hedge relationships, the change in fair value is recorded in Interest expense in the Condensed Consolidated Statements of Operations.

[2] For interest rate swaps designated in qualifying hedge relationships, the change in fair value is recorded in Interest expense in the Condensed Consolidated Statements of Operations.