Investments - Schedule of Geographic Investment (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2026	Dec. 31, 2025
Schedule of Investments [Line Items]
Cost	$ 80,347,851	$ 82,916,241
Fair Value	$ 77,649,107	$ 82,199,346
Fair Value as % of Net Assets	181.50%	172.60%
Investments At Fair Value \| Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Total Investments at Fair Value	100.00%	100.00%
United States
Schedule of Investments [Line Items]
Cost	$ 67,999,855	$ 70,395,937
Fair Value	$ 65,458,220	$ 69,480,163
Fair Value as % of Net Assets	153.00%	145.90%
United States \| Investments At Fair Value \| Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Total Investments at Fair Value	84.30%	84.50%
Europe
Schedule of Investments [Line Items]
Cost	$ 9,753,174	$ 9,986,806
Fair Value	$ 9,698,643	$ 10,235,985
Fair Value as % of Net Assets	22.70%	21.50%
Europe \| Investments At Fair Value \| Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Total Investments at Fair Value	12.50%	12.50%
Bermuda/Cayman Islands
Schedule of Investments [Line Items]
Cost	$ 1,397,208	$ 1,651,012
Fair Value	$ 1,335,652	$ 1,626,419
Fair Value as % of Net Assets	3.10%	3.40%
Bermuda/Cayman Islands \| Investments At Fair Value \| Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Total Investments at Fair Value	1.70%	2.00%
Canada
Schedule of Investments [Line Items]
Cost	$ 846,415	$ 717,684
Fair Value	$ 812,719	$ 694,692
Fair Value as % of Net Assets	1.90%	1.50%
Canada \| Investments At Fair Value \| Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Total Investments at Fair Value	1.00%	0.80%
Australia/New Zealand
Schedule of Investments [Line Items]
Cost	$ 284,689	$ 98,511
Fair Value	$ 276,601	$ 94,798
Fair Value as % of Net Assets	0.60%	0.20%
Australia/New Zealand \| Investments At Fair Value \| Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Total Investments at Fair Value	0.40%	0.10%
Asia
Schedule of Investments [Line Items]
Cost	$ 66,510	$ 66,291
Fair Value	$ 67,272	$ 67,289
Fair Value as % of Net Assets	0.20%	0.10%
Asia \| Investments At Fair Value \| Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Total Investments at Fair Value	0.10%	0.10%