Derivative and Hedging Activities, Derivative Instruments Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Inputs, Level 3
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	$ 5,000
Derivative Asset	4,796	$ 30
Derivatives (trading liabilities)	234	0
Fair Value, Inputs, Level 3 | Interest Rate Lock Commitments and Forward Commitments Total | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	4,796	2,647
Fair Value, Inputs, Level 3 | Mortgage banking(a)(b) | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	0	2,617
Derivatives (trading liabilities)	224	0
Fair Value, Inputs, Level 2 | Interest rate-related instruments — customer and mirror | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	31,728	83,626
Derivatives (trading liabilities)	112,029	26,231
Fair Value, Inputs, Level 2 | Interest rate lock commitments (mortgage) | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	1,986	5,490
Derivatives (trading liabilities)	1,815	5,441
Fair Value, Inputs, Level 2 | Commodity contracts | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	0	1,264
Derivatives (trading liabilities)	0	1,248
Asset
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other assets), fair value	38,511	93,026
Less: Legally enforceable master netting agreements	2,514	2,143
Less: Cash collateral pledged/received	7,816	1,313
Derivative Asset	28,181	89,570
Liability
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other liabilities), fair value	114,078	32,921
Less: Legally enforceable master netting agreements	2,514	2,143
Less: Cash collateral pledged/received	987	11,357
Derivatives (trading liabilities)	110,577	19,421
Not designated as hedging instruments | Asset | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	4,090,770	3,874,781
Not designated as hedging instruments | Asset | Interest rate lock commitments (mortgage)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	506,185	490,057
Not designated as hedging instruments | Asset | Commodity contracts
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	0	3,894
Not designated as hedging instruments | Asset | Mortgage banking(a)(b)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	114,909	133,990
Not designated as hedging instruments | Liability | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	4,130,770	3,874,781
Not designated as hedging instruments | Liability | Interest rate lock commitments (mortgage)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	501,213	478,745
Not designated as hedging instruments | Liability | Commodity contracts
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	0	3,910
Not designated as hedging instruments | Liability | Mortgage banking(a)(b)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	$ 197,000	$ 245,016