Derivative and Hedging Activities, Derivative Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Derivative Instrument Detail [Abstract]
Derivative Asset, Notional Amount	$ 100,000
Derivative Liability, Notional Amount	350,000
Other Assets [Member]
Derivative Instrument Detail [Abstract]
Derivatives (trading and other assets), fair value	112,916	$ 123,723
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset	8,328	18,234
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset	40,169	35,855
Derivative Asset	64,418	69,634
Liability
Derivative Instrument Detail [Abstract]
Derivatives (trading and other liabilities), fair value	223,298	202,958
Derivative Liability, Subject to Master Netting Arrangement, Asset Offset	8,328	18,234
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset	1,500	0
Derivatives (trading liabilities)	213,470	184,724
Designated as Hedging Instrument | Other Assets [Member]
Derivative Instrument Detail [Abstract]
Derivatives (trading and other assets), fair value	3,172	8,707
Designated as Hedging Instrument | Other Assets [Member] | Interest rate-related instruments — customer and mirror
Derivative Instrument Detail [Abstract]
Derivative Asset, Notional Amount	1,250,000	2,300,000
Designated as Hedging Instrument | Other Assets [Member] | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivative Asset, Notional Amount	71,753	231,566
Designated as Hedging Instrument | Liability
Derivative Instrument Detail [Abstract]
Derivatives (trading and other liabilities), fair value	13,217	3,876
Designated as Hedging Instrument | Liability | Interest rate-related instruments — customer and mirror
Derivative Instrument Detail [Abstract]
Derivative Liability, Notional Amount	2,050,000	550,000
Designated as Hedging Instrument | Liability | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivative Liability, Notional Amount	150,906	189,212
Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivative Instrument Detail [Abstract]
Derivatives (trading and other assets), fair value	109,744	115,016
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest rate-related instruments — customer and mirror
Derivative Instrument Detail [Abstract]
Derivative Asset, Notional Amount	3,893,983	3,603,513
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivative Asset, Notional Amount	89,957	87,526
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate Lock Commitments [Member]
Derivative Instrument Detail [Abstract]
Derivative Asset, Notional Amount	72,166	29,490
Not Designated as Hedging Instrument [Member] | Liability
Derivative Instrument Detail [Abstract]
Derivatives (trading and other liabilities), fair value	210,081	199,082
Not Designated as Hedging Instrument [Member] | Liability | Interest rate-related instruments — customer and mirror
Derivative Instrument Detail [Abstract]
Derivative Liability, Notional Amount	6,130,174	6,528,471
Not Designated as Hedging Instrument [Member] | Liability | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivative Liability, Notional Amount	276,412	135,654
Not Designated as Hedging Instrument [Member] | Liability | Forward Commitments to Sell Residential Mortgage Loans
Derivative Instrument Detail [Abstract]
Derivative Liability, Notional Amount	150,500	51,500
Fair Value, Inputs, Level 2
Derivative Instrument Detail [Abstract]
Derivative Asset, Notional Amount	260
Derivative Liability, Notional Amount	2,000
Fair Value, Measurements, Recurring | Interest Rate Lock Commitments [Member]
Derivative Instrument Detail [Abstract]
Derivative Asset	766	439
Fair Value, Measurements, Recurring | Designated as Hedging Instrument
Derivative Instrument Detail [Abstract]
Derivative Asset	3,036	8,075
Fair Value, Measurements, Recurring | Designated as Hedging Instrument | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivatives (trading liabilities)	337	2,946
Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument [Member]
Derivative Instrument Detail [Abstract]
Derivative Asset	106,277	111,623
Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument [Member] | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivatives (trading liabilities)	2,514	2,746
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivative Asset	2,700	2,954
Derivatives (trading liabilities)	2,514	2,746
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Interest Rate Lock Commitments [Member]
Derivative Instrument Detail [Abstract]
Derivative Asset	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Designated as Hedging Instrument
Derivative Instrument Detail [Abstract]
Derivative Asset	3,036	8,075
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Designated as Hedging Instrument | Interest rate-related instruments — customer and mirror
Derivative Instrument Detail [Abstract]
Derivative Asset	3,036	8,075
Derivatives (trading liabilities)	12,880	930
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Designated as Hedging Instrument | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivative Asset	136	632
Derivatives (trading liabilities)	337	2,946
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Not Designated as Hedging Instrument [Member]
Derivative Instrument Detail [Abstract]
Derivative Asset	106,277	111,623
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Not Designated as Hedging Instrument [Member] | Interest rate-related instruments — customer and mirror
Derivative Instrument Detail [Abstract]
Derivative Asset	106,277	111,623
Derivatives (trading liabilities)	207,471	195,662
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Not Designated as Hedging Instrument [Member] | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivatives (trading liabilities)	2,514	2,746
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Interest Rate Lock Commitments [Member]
Derivative Instrument Detail [Abstract]
Derivative Asset	766	439
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Forward Commitments to Sell Residential Mortgage Loans
Derivative Instrument Detail [Abstract]
Derivatives (trading liabilities)		673
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Designated as Hedging Instrument
Derivative Instrument Detail [Abstract]
Derivative Asset	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Designated as Hedging Instrument | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivatives (trading liabilities)	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Not Designated as Hedging Instrument [Member]
Derivative Instrument Detail [Abstract]
Derivative Asset	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Not Designated as Hedging Instrument [Member] | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivatives (trading liabilities)	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Not Designated as Hedging Instrument [Member] | Interest Rate Lock Commitments [Member]
Derivative Instrument Detail [Abstract]
Derivative Asset	766	$ 439
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Not Designated as Hedging Instrument [Member] | Forward Commitments to Sell Residential Mortgage Loans
Derivative Instrument Detail [Abstract]
Derivatives (trading liabilities)	$ 95