Borrowings - Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Debt Disclosure [Abstract]
Borrowing interest expense	$ 86,952	$ 83,385	$ 259,161	$ 219,061
Facility unused fees	2,136	747	6,374	3,490
Amortization of deferred financing costs	1,354	1,411	4,204	4,815
Amortization of original issue discount and debt issuance costs (including premiums and discounts)	3,943	2,587	11,029	6,908
Gain (loss) from interest rate swaps accounted for as hedges and the related hedged items:
Interest rate swaps	(488)	(11,154)	(26,266)	(13,169)
Hedged items	794	11,215	25,452	12,647
Interest expense	94,691	88,191	279,954	233,752
Cash paid for interest expense	$ 113,467	$ 104,074	$ 278,653	$ 237,732