Derivative and Hedging Activities, Derivative Instruments Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Other Assets [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other assets), fair value	$ 120,961	$ 68,759
Less: Legally enforceable master netting agreements	3,924	2,788
Less: Cash collateral pledged/received	63,452	26,898
Derivative Asset	53,584	39,072
Liability
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other liabilities), fair value	258,226	254,506
Less: Legally enforceable master netting agreements	3,924	2,788
Less: Cash collateral pledged/received	12	217
Derivatives (trading liabilities)	254,290	251,500
Designated as Hedging Instrument | Other Assets [Member] | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	100,000	900,000
Designated as Hedging Instrument | Liability | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	2,750,000	1,150,000
Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other assets), fair value	119,374	64,410
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	4,344,168	4,246,823
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Foreign currency exchange forwards
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	486,539	499,078
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Mortgage banking(a)(b)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	39,392	21,265
Not Designated as Hedging Instrument [Member] | Liability
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other assets), fair value	245,544	253,245
Not Designated as Hedging Instrument [Member] | Liability | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	4,698,706	4,599,391
Not Designated as Hedging Instrument [Member] | Liability | Foreign currency exchange forwards
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	478,848	461,134
Not Designated as Hedging Instrument [Member] | Liability | Forward Commitments to Sell Residential Mortgage Loans
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	71,500	33,000
Fair Value, Inputs, Level 3
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other liabilities), fair value	0	46
Derivatives (trading liabilities)	0	46
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Foreign currency exchange forwards
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	3,295	1,922
Derivatives (trading liabilities)	3,038	1,801
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Designated as Hedging Instrument | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	1,587	4,349
Derivatives (trading liabilities)	12,682	1,260
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Not Designated as Hedging Instrument [Member] | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	115,311	62,401
Derivatives (trading liabilities)	242,507	251,398
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	336	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Forward Commitments to Sell Residential Mortgage Loans
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading liabilities)		46
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Not Designated as Hedging Instrument [Member] | Mortgage banking(a)(b)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	768	$ 86
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Not Designated as Hedging Instrument [Member] | Forward Commitments to Sell Residential Mortgage Loans
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading liabilities)	$ 0