Derivative Financial Instruments - Free-Standing (Details) - Not designated as hedging instrument - Interest rate swaps - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Derivative financial instruments
Notional Amount	$ 2,697,465,000		$ 2,697,465,000		$ 2,753,801,000
Positive fair value, derivative asset	7,802,000		7,802,000		1,204,000
Negative fair value, derivative liability	8,849,000		8,849,000		$ 521,000
Net interest expense	$ 0	$ 0	$ 0	$ 0
Minimum
Derivative financial instruments
Derivative, Floating rate	5.46%		5.46%		5.84%
Fixed interest rate (as a percent)	2.39%		2.39%		2.39%
Maximum
Derivative financial instruments
Derivative, Floating rate	8.20%		8.20%		8.34%
Fixed interest rate (as a percent)	6.67%		6.67%		5.98%
Customer swap program
Derivative financial instruments
Notional Amount	$ 2,700,000,000		$ 2,700,000,000		$ 2,800,000,000
Positive fair value, derivative asset	7,800,000		7,800,000		1,200,000
Negative fair value, derivative liability	8,800,000		8,800,000		$ 500,000
Upfront fees on the dealer swap	$ 700,000	$ 0	$ 1,300,000	$ 1,500,000