Derivative Financial Instruments - Notional Values (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Notional values	$ 5,086,372	$ 6,589,856
Trading
Derivatives, Fair Value [Line Items]
Notional values	0	1,235,713
Cash Flow | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional values	1,407,412	1,438,144
Fair Value | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional values	3,678,960	3,915,999
Interest rate swaps
Derivatives, Fair Value [Line Items]
Notional values	5,086,372	5,536,096
Interest rate swaps | Trading
Derivatives, Fair Value [Line Items]
Notional values	0	181,953
Interest rate swaps | Cash Flow | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional values	1,407,412	1,438,144
Interest rate swaps | Fair Value | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional values	3,678,960	3,915,999
Other
Derivatives, Fair Value [Line Items]
Notional values	0	1,053,760
Other | Trading
Derivatives, Fair Value [Line Items]
Notional values	0	1,053,760
Other | Cash Flow | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional values	0	0
Other | Fair Value | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional values	$ 0	$ 0