CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities:
Net increase (decrease) in net assets resulting from operations		$ 43,359	$ 45,410	$ 87,359	$ 94,717
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:
Net realized (gain) loss on investments				1,640	(224)
Net realized (gain) loss on foreign currency forward contracts				1,130	(2)
Net realized (gain) loss on foreign currency and other transactions		(1,275)	(112)	(1,229)	(94)
Net change in unrealized (gain) loss on investments				10,560	(5,222)
Net change in unrealized (gain) loss on foreign currency forward contracts		2,086	672	2,833	(1,681)
Net change in unrealized (gain) loss on foreign currency and other transactions		7,269	346	10,026	(293)
Payment-in-kind interest capitalized				(8,821)	(6,009)
Net accretion of discounts and amortization of premiums				(7,771)	(5,089)
Purchases of investments				(1,558,894)	(1,062,640)
Proceeds from principal payments and sale of investments and settlement of forward contracts				484,706	220,306
Amortization of debt issuance costs		2,289	2,226	5,142	4,225
Changes in operating assets and liabilities:
Interest and dividend receivable				(17,394)	(11,528)
Receivable for unsettled trades				(13,249)	(9,085)
Other assets				(870)	393
Interest payable				4,158	2,803
Payable for unsettled trades				(39,869)	(50,015)
Base management fees payable				3,107	2,567
Incentive fees payable				(750)	2,740
Accounts payable and accrued expenses				3,628	4,484
Net cash provided by (used in) operating activities				(1,034,558)	(819,647)
Cash flows from financing activities:
Borrowings on debt				1,822,331	1,328,223
Repayments of debt				(1,240,520)	(799,477)
Debt issuance costs capitalized				(3,723)	(3,428)
Proceeds from issuance of common stock				486,757	386,721
Repurchases of common stock				(22,410)	(32,252)
Stockholder distributions paid				(65,167)	(46,375)
Net cash provided by (used in) financing activities				977,268	833,412
Net increase (decrease) in cash and restricted cash and cash equivalents				(57,290)	13,765
Effect of foreign currency exchange rates				21	(2)
Cash and restricted cash and cash equivalents, beginning of period				254,024	77,755	$ 77,755
Cash and restricted cash and cash equivalents, end of period	$ 196,755	196,755	91,518	196,755	91,518	254,024
Supplemental disclosure of cash flow information:
Cash interest paid during the period				74,565	50,564
Cash paid for income taxes, including excise taxes, during the period				1,128	554
Supplemental disclosure of non-cash activities:
Stock issued in connection with dividend reinvestment plan	26,952	26,952	18,862	50,729	33,266
Reconciliation of cash and restricted cash
Cash and cash equivalents	53,298	53,298	19,370	53,298	19,370	129,634	$ 17,586
Restricted cash and cash equivalents	143,457	143,457	72,148	143,457	72,148	124,390	60,169
Total cash and restricted cash and cash equivalents shown on the Consolidated Statements of Cash Flows	$ 196,755	$ 196,755	$ 91,518	$ 196,755	$ 91,518	$ 254,024	$ 77,755