Investments - Schedule of Fair Value Portfolio of Investments by Geographic Location (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2026	Dec. 31, 2025
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 4,845,903	$ 4,466,647
Geographic Concentration Risk \| Total Investments Benchmark, Geographical
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 4,845,903	$ 4,466,647
Percentage of Total Portfolio	100.00%	100.00%
Geographic Concentration Risk \| Total Investments Benchmark, Geographical \| United States
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 4,373,284	$ 4,035,927
Percentage of Total Portfolio	90.30%	90.40%
Geographic Concentration Risk \| Total Investments Benchmark, Geographical \| United Kingdom
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 131,959	$ 118,031
Percentage of Total Portfolio	2.70%	2.70%
Geographic Concentration Risk \| Total Investments Benchmark, Geographical \| Netherlands
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 114,239	$ 117,344
Percentage of Total Portfolio	2.40%	2.60%
Geographic Concentration Risk \| Total Investments Benchmark, Geographical \| Israel
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 68,634	$ 67,280
Percentage of Total Portfolio	1.40%	1.50%
Geographic Concentration Risk \| Total Investments Benchmark, Geographical \| Germany
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 58,410	$ 50,386
Percentage of Total Portfolio	1.20%	1.10%
Geographic Concentration Risk \| Total Investments Benchmark, Geographical \| Switzerland
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 48,514	$ 35,504
Percentage of Total Portfolio	1.00%	0.80%
Geographic Concentration Risk \| Total Investments Benchmark, Geographical \| Sweden
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 21,386	$ 18,244
Percentage of Total Portfolio	0.40%	0.40%
Geographic Concentration Risk \| Total Investments Benchmark, Geographical \| Canada
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 18,109	$ 16,841
Percentage of Total Portfolio	0.40%	0.40%
Geographic Concentration Risk \| Total Investments Benchmark, Geographical \| Ireland
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 10,901	$ 4,729
Percentage of Total Portfolio	0.20%	0.10%
Geographic Concentration Risk \| Total Investments Benchmark, Geographical \| Singapore
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 0	$ 1,827
Percentage of Total Portfolio	0.00%	0.00%
Geographic Concentration Risk \| Total Investments Benchmark, Geographical \| Other
Schedule Of Investments [Line Items]
Investments at Fair Value	$ 467	$ 534
Percentage of Total Portfolio	0.00%	0.00%