Fair Value of Financial Instruments - Level 3 Liabilities (Details) - Level 3 - Recurring basis - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Agreements with Non-mark-to-market Collateral Provisions
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 440,106	$ 441,883	$ 578,879	$ 628,280
Issuances	107,230	418,183	379,625	418,183
Payment of principal	(145,983)	(255,345)	(557,151)	(440,487)
Change in unrealized losses	0	0	0	(1,255)
Balance at end of period	401,353	604,721	401,353	604,721
Agreements with Mark-to-market Collateral Provisions
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	553,162	1,433,857	884,495	1,322,362
Issuances	56,330	272,005	78,348	1,142,611
Payment of principal	(103,745)	(773,366)	(457,096)	(1,532,477)
Change in unrealized losses	0	0	0	0
Balance at end of period	$ 505,747	$ 932,496	$ 505,747	$ 932,496