CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating Activities
Net increase (decrease) in net assets resulting from operations	$ 329,064	$ 207,064
Net realized (gain) loss on investments	(11,527)	4,629
Net change in unrealized (gains) losses on investments	(799)	(93,664)
Net change in unrealized (gains) losses on derivatives	(1,430)
Net unrealized (appreciation) depreciation on foreign currency forward contracts	(14,897)	282
Net unrealized (appreciation) depreciation on translation of assets and liabilities in foreign currencies	(35,571)	9,649
Payment-in-kind interest capitalized	(9,858)	(3,517)
Net accretion of discount and amortization of premium	(14,147)	(6,738)
Amortization of deferred financing costs	4,022	2,718
Amortization of offering costs	225	38
Purchases of investments	(5,545,473)	(1,426,147)
Proceeds from sale of investments and principal repayments	1,268,234	1,065,351
Changes in operating assets and liabilities:
Interest receivable	(37,013)	(2,121)
Receivable for investments sold	(28,830)	9,979
Other assets	(7,178)	6,653
Payable for investments purchased	288,017	20,307
Management and performance-based incentive fees payable	12,825	2,342
Accrued administrative services expense payable	(10)	(1,534)
Interest payable	27,987	11,571
Other liabilities and accrued expenses	(945)	(6,594)
Net Cash Used in/Provided by Operating Activities	(3,777,304)	(199,732)
Financing Activities
Issuances of debt	3,326,898	936,769
Payments of debt	(1,294,056)	(947,074)
Financing costs paid and deferred	(5,776)	(1,149)
Proceeds from issuance of common shares	2,745,848	554,495
Repurchased shares, net of early repurchase deduction paid	(169,391)	(172,138)
Distributions paid	(137,382)	(56,603)
Offering costs paid and deferred	(225)	(38)
Net Cash Used in/Provided by Financing Activities	4,465,916	314,262
Cash Cash Equivalents And Foreign Currencies [Abstract]
Net increase (decrease) in cash and cash equivalents and foreign currencies during the period	688,612	114,530
Effect of foreign exchange rate changes on cash and cash equivalents	11	(18)
Cash, cash equivalents and foreign currencies at beginning of period	271,175	51,658
Cash, Cash Equivalents and Foreign Currencies at the End of Period	959,798	166,170
Supplemental Disclosure and Non-Cash Information
Cash interest paid	92,450	84,539
Distributions payable	54,505	19,996
Reinvestment of distributions during the period	109,926	46,325
PIK income	$ 9,052	$ 3,745