Derivative Financial Instruments - Free-Standing (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Minimum
Derivative financial instruments
Derivative, Floating rate					0.00%
Maximum
Derivative financial instruments
Derivative, Floating rate					3.55%
Derivatives Not Designated as Hedging Instruments | Interest rate swaps
Derivative financial instruments
Notional Amount	$ 2,937,558		$ 2,937,558		$ 2,827,582
Net interest expense	$ 0	$ 0	$ 0	$ 0
Derivatives Not Designated as Hedging Instruments | Interest rate swaps | Minimum
Derivative financial instruments
Derivative, Floating rate	1.06%		1.06%
Fixed interest rate (as a percent)	2.06%		2.06%		2.02%
Derivatives Not Designated as Hedging Instruments | Interest rate swaps | Maximum
Derivative financial instruments
Derivative, Floating rate	4.06%		4.06%
Fixed interest rate (as a percent)	6.19%		6.19%		6.19%
Derivatives Not Designated as Hedging Instruments | Interest rate swaps | Customer swap program
Derivative financial instruments
Notional Amount	$ 2,900,000		$ 2,900,000		$ 2,800,000
Positive fair value, derivative asset	5,500		5,500		50,900
Negative fair value, derivative liability	24,000		24,000		$ 0
Upfront fees on the dealer swap	$ 500	$ 1,300	$ 1,400	$ 1,700