Derivative Instruments and Hedging Activities (Impact of Derivatives on Balance Sheet) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Derivatives not designated as hedging instruments
Derivative [Line Items]
Fair value of derivative assets	$ 160,545	$ 169,704
Fair value of derivative liabilities	97,494	78,207
Derivatives not designated as hedging instruments \| Interest rate contracts
Derivative [Line Items]
Notional Amount	9,420,004	9,653,600
Fair value of derivative assets	156,210	167,560
Fair value of derivative liabilities	95,707	74,514
Derivatives not designated as hedging instruments \| Mortgage derivatives \| Mortgage derivatives - interest rate lock commitments
Derivative [Line Items]
Notional Amount	131,642	99,006
Fair value of derivative assets	788	2,105
Fair value of derivative liabilities	0	0
Derivatives not designated as hedging instruments \| Mortgage derivatives \| Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans
Derivative [Line Items]
Notional Amount	178,000	105,500
Fair value of derivative assets	3,443	0
Fair value of derivative liabilities	0	122
Derivatives not designated as hedging instruments \| Risk participation agreements
Derivative [Line Items]
Notional Amount	431,402	374,214
Fair value of derivative assets	0	0
Fair value of derivative liabilities	11	36
Derivatives not designated as hedging instruments \| Foreign exchange contracts
Derivative [Line Items]
Notional Amount	43,314	22,387
Fair value of derivative assets	104	39
Fair value of derivative liabilities	0	0
Derivatives not designated as hedging instruments \| Visa Derivative
Derivative [Line Items]
Notional Amount	0	0
Fair value of derivative assets	0	0
Fair value of derivative liabilities	1,776	3,535
Cash flow hedges
Derivative [Line Items]
Fair value of derivative assets	0	22,004
Fair value of derivative liabilities	134,369	20,395
Cash flow hedges \| Interest rate contracts
Derivative [Line Items]
Notional Amount	5,000,000	3,600,000
Fair value of derivative assets	0	22,004
Fair value of derivative liabilities	$ 134,369	$ 20,395

Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, after offset of derivative asset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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- Definition

Nominal or face amount used to calculate payment on derivative.

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