Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investment Income
Payment-in-kind (“PIK”) interest income	$ 175,646	$ 171,697	$ 113,256
Dividend income	36,179	37,309	26,120
Total Investment Income	1,596,758	1,582,094	1,202,004
Expenses
Interest expense	464,915	436,306	307,539
Management fees	193,570	191,622	188,755
Performance based incentive fees	157,193	159,857	118,091
Professional fees	13,602	15,532	14,709
Directors’ fees	1,280	1,280	1,092
Other general and administrative	13,495	11,127	9,290
Total Operating Expenses	844,055	815,724	639,476
Net Investment Income (Loss) Before Taxes	752,703	766,370	562,528
Income tax expense (benefit), including excise tax expense (benefit)	11,646	12,759	5,810
Net Investment Income (Loss) After Taxes	741,057	753,611	556,718
Net change in unrealized gain (loss):
Net change in unrealized gain (loss)	(48,419)	91,743	(88,427)
Translation of assets and liabilities in foreign currencies	(1,041)	5,808	(2,118)
Income tax (provision) benefit	(709)	(4,605)	(3,964)
Total Net Change in Unrealized Gain (Loss)	(50,169)	92,946	(94,509)
Net realized gain (loss):
Net realized gain (loss)	(60,626)	(52,003)	5,171
Foreign currency transactions	(9,511)	(1,242)	(1,025)
Total Net Realized Gain (Loss)	(95,908)	(53,245)	4,146
Total Net Realized and Change in Unrealized Gain (Loss)	(146,077)	39,701	(90,363)
Net Increase (Decrease) in Net Assets Resulting from Operations	$ 594,980	$ 793,312	$ 466,355
Earnings Per Share - Basic (in usd per share)	$ 1.53	$ 2.03	$ 1.18
Earnings Per Share - Diluted (in usd per share)	$ 1.53	$ 2.03	$ 1.18
Weighted Average Shares Outstanding - Basic (in shares)	390,068,596	390,104,585	394,006,852
Weighted Average Shares Outstanding - Diluted (in shares)	390,068,596	390,104,585	394,006,852
Investment income from non-controlled, non-affiliated investments:
Investment Income
Interest income	$ 1,168,652	$ 1,209,536	$ 931,870
Payment-in-kind (“PIK”) interest income	172,852	169,763	113,256
Dividend income	78,482	72,936	52,422
Other income	22,451	14,755	18,514
Total Investment Income	1,442,437	1,466,990	1,116,062
Net change in unrealized gain (loss):
Net change in unrealized gain (loss)	(45,932)	90,497	(133,980)
Net realized gain (loss):
Net realized gain (loss)	(62,453)	(52,003)	5,171
Investment income from non-controlled, affiliated investments:
Investment Income
Interest income	1,038	0	0
Payment-in-kind (“PIK”) interest income	1,128	0	0
Dividend income	932	252	0
Other income	40	0	0
Total Investment Income	3,138	252	0
Net change in unrealized gain (loss):
Net change in unrealized gain (loss)	951	1,033	(49)
Net realized gain (loss):
Net realized gain (loss)	1,827	0	0
Investment income from controlled, affiliated investments:
Investment Income
Interest income	30,308	20,174	8,206
Payment-in-kind (“PIK”) interest income	1,666	1,934	0
Dividend income	118,538	91,802	77,047
Other income	671	942	689
Total Investment Income	151,183	114,852	85,942
Net change in unrealized gain (loss):
Net change in unrealized gain (loss)	(3,438)	213	45,602
Net realized gain (loss):
Net realized gain (loss)	$ (25,771)	$ 0	$ 0