Condensed Consolidated Statements of Changes in Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net increase (decrease) in net assets resulting from operations	$ 149,809	$ 183,755
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:
Net change in unrealized (appreciation) depreciation on investments	40,754	(11,787)
Net change in unrealized (appreciation) depreciation on derivative instruments	1,921	0
Net change in unrealized (appreciation) depreciation on translation of assets and liabilities in foreign currencies	(282)	21
Net realized (gain) loss on investments	(8,525)	(428)
Net change due to hedging activity	(1,124)	0
Net accretion of discount and amortization of premium	(16,419)	(9,706)
Payment-in-kind interest capitalized	(22,613)	(19,977)
Amortization of deferred financing costs	1,409	1,698
Amortization of original issue discount and debt issuance costs	3,350	2,041
Purchases of investments	(689,214)	(719,149)
Proceeds from sale of investments and principal repayments	977,955	186,666
Changes in operating assets and liabilities:
Interest receivable	4,789	(9,883)
Receivable for investments	(5,447)	1,281
Derivative instruments, net	(7,468)	0
Receivable from broker	(4,763)	0
Payable for investments	8,271	10,756
Due to affiliates	(89)	(169)
Management fees payable	1,996	3,006
Income based incentive fees payable	(4,407)	1,472
Capital gains based incentive fees payable	0	3,134
Interest payable	3,953	(9,776)
Accrued expenses and other liabilities	(9,192)	(8,485)
Net cash provided by (used in) operating activities	424,664	(395,530)
Cash flows from financing activities:
Borrowings on debt	846,940	363,790
Repayments on debt	(559,606)	0
Debt issuance costs paid	(827)	0
Dividends paid in cash	(165,622)	(137,439)
Proceeds from issuance of Common Shares, net of offering and underwriting costs	189,235	161,998
Net cash provided by (used in) financing activities	310,120	388,349
Net increase (decrease) in cash and cash equivalents	734,784	(7,181)
Effect of foreign exchange rate changes on cash and cash equivalents	615	(20)
Cash and cash equivalents, beginning of period	229,606	154,857
Cash and cash equivalents, end of period	965,005	147,656
Supplemental information and non-cash activities:
Interest paid during the period	96,301	72,624
Distribution payable	175,421	147,743
Reinvestment of distributions during the period	5,130	5,614
Accrued but unpaid debt issuance costs	1,866	0
Excise taxes paid	$ 15,066	$ 11,430