Investments at Fair Value (Tables)

12 Months Ended

Dec. 31, 2025

Investments, Debt and Equity Securities [Abstract]

Summary of Investments at Fair Value

Investments at fair value consisted of the following at December 31, 2025 and December 31, 2024:

	December 31, 2025
	Amortized Cost (1)		Fair Value		Net Unrealized Gain (Loss)
First-lien debt investments	$	7,483,884	$	7,659,912	$	176,028
Second-lien debt investments		35,279		37,383		2,104
Mezzanine debt investments		215,194		222,366		7,172
Equity and other investments		158,509		188,993		30,484
Total Investments	$	7,892,866	$	8,108,654	$	215,788

	December 31, 2024
	Amortized Cost (1)		Fair Value		Net Unrealized Gain (Loss)
First-lien debt investments	$	6,732,065	$	6,871,809	$	139,744
Second-lien debt investments		89,461		94,778		5,317
Mezzanine debt investments		118,441		123,184		4,743
Equity and other investments		140,027		154,511		14,484
Total Investments	$	7,079,994	$	7,244,282	$	164,288

(1)The amortized cost represents the original cost adjusted for the amortization of discounts or premiums, as applicable, on debt investments using the effective interest method.

Summary of Industry Composition of Investments at Fair Value

The industry composition of investments at fair value at December 31, 2025 and December 31, 2024, is as follows:

	December 31, 2025			December 31, 2024
Automotive		3.8	%		4.0	%
Business Services		19.7	%		18.7	%
Chemicals		1.6	%		0.5	%
Communications		5.6	%		6.4	%
Education		4.3	%		5.2	%
Electronics		2.8	%		3.1	%
Financial Services		0.4	%		6.5	%
Healthcare		7.6	%		2.5	%
Hotel, Gaming and Leisure		6.4	%		7.4	%
Human Resource Support Services		5.2	%		3.9	%
Insurance	—				0.9	%
Internet Services		7.8	%		7.2	%
Manufacturing		2.4	%		8.0	%
Oil, Gas and Consumable Fuels		1.2	%		2.9	%
Other		7.4	%		3.4	%
Pharmaceuticals		7.5	%		8.7	%
Real Estate (1)		0.0	%		0.0	%
Retail and Consumer Products		10.1	%		9.5	%
Transportation		6.2	%		1.2	%
Total		100.0	%		100.0	%

(1)Value rounds to less than 0.1%.

Summary of Geographic Composition of Investments at Fair Value

The geographic composition of investments at fair value at December 31, 2025 and December 31, 2024 is as follows:

	December 31, 2025			December 31, 2024
United States
Midwest		21.0	%		18.0	%
Northeast		10.5	%		17.3	%
South		19.1	%		14.2	%
West		24.2	%		26.8	%
Canada (1)		0.0	%		2.3	%
Finland (1)		0.0	%		0.0	%
France		4.5	%		1.8	%
Germany		1.3	%		0.6	%
Italy		2.8	%		2.4	%
Netherlands		0.2	%		0.2	%
Norway		7.2	%		5.5	%
Sweden		0.3	%		0.1	%
United Kingdom		8.9	%		10.8	%
Total		100.0	%		100.0	%

(1)Value rounds to less than 0.1%.