Derivative Financial Instruments - Free-Standing (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 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	$ 2,866,620		$ 2,866,620		$ 2,827,582
Positive fair value, derivative asset	5,865		5,865		$ 50,898
Negative fair value, derivative liability	46,669		46,669
Net interest expense	$ 0	$ 0	$ 0	$ 0
Derivatives Not Designated as Hedging Instruments | Interest rate swaps | Minimum
Derivative financial instruments
Derivative, Floating rate	3.06%		3.06%
Fixed interest rate (as a percent)	2.39%		2.39%		2.02%
Derivatives Not Designated as Hedging Instruments | Interest rate swaps | Maximum
Derivative financial instruments
Derivative, Floating rate	5.56%		5.56%
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	5,900		5,900		50,900
Negative fair value, derivative liability	46,700		46,700		$ 0
Upfront fees on the dealer swap	$ 400	$ 300	$ 1,800	$ 2,000