Income Taxes - Schedule of Accumulated Gains (Losses) as Calculated on Tax Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Distributable ordinary income	$ 972,389	$ 712,713	$ 190,977
Capital losses carried forward	(612,779)	(489,701)	(220,696)
Other temporary book/tax differences	799	872	(2,856)
Net unrealized appreciation / (depreciation) on investments, derivatives, and foreign currency	(478,314)	(380,039)	(981,364)
Total accumulated under-distributed (over-distributed) earnings	$ (117,905)	$ (156,155)	$ (1,013,939)