Derivative Financial Instruments - Impact of Derivatives on Consolidated Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Cash Flow Hedges
Interest expense	$ 100,223	$ 95,906	$ 190,229	$ 200,950
Trading
Total	6,983	10,629	19,431	17,131
Designated as Hedging Instrument
Fair Value Hedges
Interest recognized on derivatives	8,912	22,857	26,200	45,467
Hedged items recorded in interest expense	21,487	20,948	72,755	52,224
Derivatives recorded in interest expense	(21,152)	(20,934)	(72,471)	(52,185)
Trading
Total	9,247	22,871	26,484	45,506
Designated as Hedging Instrument | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent | Reclassification out of Accumulated Other Comprehensive Income
Cash Flow Hedges
Interest expense	(2,264)	(5,294)	(6,805)	(10,563)
Trading
Trading
Change in fair value of future interest payments recorded in earnings	0	(6,948)	(248)	(17,812)
Total	$ 0	$ (6,948)	$ (248)	$ (17,812)