INVESTMENTS - Schedules of Portfolio Composition by Geographic Composition of Investments at Cost and Fair Value (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2026	Dec. 31, 2025
Schedule of Investments [Line Items]
Cost	$ 1,971,534	$ 2,001,207
Fair Value	$ 1,918,917	$ 1,962,449
Fair Value as % of Net Assets	226.03%	224.24%
Investment Owned 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	$ 1,887,942	$ 1,917,138
Fair Value	$ 1,835,532	$ 1,878,290
Fair Value as % of Net Assets	216.21%	214.62%
United States \| Investment Owned at Fair Value \| Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Total Investments at Fair Value	95.65%	95.71%
Canada
Schedule of Investments [Line Items]
Cost	$ 43,034	$ 43,215
Fair Value	$ 43,149	$ 43,408
Fair Value as % of Net Assets	5.08%	4.96%
Canada \| Investment Owned at Fair Value \| Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Total Investments at Fair Value	2.25%	2.21%
Germany
Schedule of Investments [Line Items]
Cost	$ 27,683	$ 27,806
Fair Value	$ 27,843	$ 28,064
Fair Value as % of Net Assets	3.28%	3.21%
Germany \| Investment Owned at Fair Value \| Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Total Investments at Fair Value	1.45%	1.43%
United Kingdom
Schedule of Investments [Line Items]
Cost	$ 12,875	$ 13,048
Fair Value	$ 12,393	$ 12,687
Fair Value as % of Net Assets	1.46%	1.45%
United Kingdom \| Investment Owned at Fair Value \| Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Total Investments at Fair Value	0.65%	0.65%