Investments - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Schedule of Investments [Line Items]
Purchases of investments on trade date basis	$ 880,047	$ 760,047	$ 2,306,194	$ 5,826,781
Sales and repayment of investments on trade date basis	376,012	454,521	1,441,363	1,674,871
Payment-in-kind interest income	$ 2,983	$ 1,679	$ 6,728	$ 3,627