Condensed Consolidated Schedule of Investments - Derivatives (Parenthetical) € in Thousands, £ in Thousands, kr in Thousands, $ in Thousands, $ in Thousands		9 Months Ended		12 Months Ended
		Sep. 30, 2025 USD ($)		Dec. 31, 2024 USD ($)		Sep. 30, 2025 CAD ($)	Sep. 30, 2025 EUR (€)	Sep. 30, 2025 GBP (£)	Sep. 30, 2025 SEK (kr)	Dec. 31, 2024 CAD ($)	Dec. 31, 2024 EUR (€)	Dec. 31, 2024 GBP (£)	Dec. 31, 2024 SEK (kr)
Open Forward Foreign Currency Contract [Line Items]
Notional		$ 76,833		$ 700,000
Notional		1,736,064		571,016
Unrealized Appreciation (Depreciation)		81		2,401
Investment at cost		13,932,697		13,193,219
Investments at fair value		$ 13,809,636		$ 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		$ 57,979		$ 56,412
Notional						$ 80,000				$ 80,000
Unrealized Appreciation (Depreciation)		344		719
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 2
Open Forward Foreign Currency Contract [Line Items]
Notional		76,833		68,801
Notional | €							€ 65,250				€ 65,250
Unrealized Appreciation (Depreciation)		(81)		1,043
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 3
Open Forward Foreign Currency Contract [Line Items]
Notional		23,727		37,395
Notional | £								£ 17,500				£ 29,500
Unrealized Appreciation (Depreciation)		200		482
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 4
Open Forward Foreign Currency Contract [Line Items]
Notional		39,953		8,408
Notional								£ 29,500					kr 91,000
Unrealized Appreciation (Depreciation)		293		157
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 5
Open Forward Foreign Currency Contract [Line Items]
Notional		14,405
Notional | kr									kr 133,956
Unrealized Appreciation (Depreciation)		104
Foreign Currency Forward Contracts
Open Forward Foreign Currency Contract [Line Items]
Unrealized Appreciation (Depreciation)		860		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		41,052		(3,169)
Upfront Payments / Receipts		0		0
Change in Unrealized Appreciation (Depreciation)		$ 44,221	[1]	$ (3,169)	[2]
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		14,460		3,995
Upfront Payments / Receipts		0		0
Change in Unrealized Appreciation (Depreciation)		$ 10,465	[1]	$ 3,995	[2]
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		7,485		(5,855)
Upfront Payments / Receipts		0		0
Change in Unrealized Appreciation (Depreciation)		$ 13,340	[1]	$ (5,855)	[2]
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		3,409		(1,309)
Upfront Payments / Receipts		0		0
Change in Unrealized Appreciation (Depreciation)		$ 4,718	[1]	$ (1,309)	[2]
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		15,698
Upfront Payments / Receipts		0
Change in Unrealized Appreciation (Depreciation)	[1]	$ 15,698

[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.