Derivative and Hedging Activities, Derivative Instruments Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Asset
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivatives (trading and other assets), fair value	$ 104,305	$ 91,260
Derivative Asset, Fair Value, Gross Liability	10,410	5,322
Cash Collateral Received	1,408	27,593
Net Amounts Presented on the Consolidated Balance Sheets	92,487	58,345
Liability
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivatives (trading and other liabilities), fair value	37,455	89,889
Derivative Liability, Fair Value, Gross Asset	10,410	5,322
Cash Collateral Pledged	11,365	63
Net Amounts Presented on the Consolidated Balance Sheets	15,680	84,504
Designated as hedging instruments \| Asset \| Interest rate-related instruments
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivative Asset, Notional Amount	0	0
Derivatives (trading and other assets), fair value	0	0
Designated as hedging instruments \| Liability \| Interest rate-related instruments
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivative Liability, Notional Amount	0	500,000
Derivatives (trading and other liabilities), fair value	0	40
Not designated as hedging instruments \| Asset
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivatives (trading and other assets), fair value	104,305	91,260
Not designated as hedging instruments \| Asset \| Interest Rate Related Instruments Customer and Mirror
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivative Asset, Notional Amount	3,029,877	2,707,204
Derivatives (trading and other assets), fair value	77,024	52,796
Not designated as hedging instruments \| Asset \| Foreign currency exchange forwards
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivative Asset, Notional Amount	272,636	117,879
Derivatives (trading and other assets), fair value	4,226	721
Not designated as hedging instruments \| Asset \| Commodity contracts
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivative Asset, Notional Amount	255,089	331,727
Derivatives (trading and other assets), fair value	20,528	35,426
Not designated as hedging instruments \| Asset \| Mortgage banking(a)
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivative Asset, Notional Amount	255,291	191,222
Derivatives (trading and other assets), fair value	2,527	2,208
Not designated as hedging instruments \| Asset \| Time deposits
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivative Asset, Notional Amount	0	11,185
Derivatives (trading and other assets), fair value	0	109
Not designated as hedging instruments \| Liability
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivatives (trading and other liabilities), fair value	37,455	89,849
Not designated as hedging instruments \| Liability \| Interest Rate Related Instruments Customer and Mirror
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivative Liability, Notional Amount	3,029,877	2,707,204
Derivatives (trading and other liabilities), fair value	13,073	52,653
Not designated as hedging instruments \| Liability \| Foreign currency exchange forwards
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivative Liability, Notional Amount	264,653	69,153
Derivatives (trading and other liabilities), fair value	4,048	675
Not designated as hedging instruments \| Liability \| Commodity contracts
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivative Liability, Notional Amount	255,165	315,861
Derivatives (trading and other liabilities), fair value	19,624	34,340
Not designated as hedging instruments \| Liability \| Mortgage banking(a)
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivative Liability, Notional Amount	263,000	139,984
Derivatives (trading and other liabilities), fair value	710	2,072
Not designated as hedging instruments \| Liability \| Time deposits
Derivative Instruments Designated/Not Designated as Hedging Instruments
Derivative Liability, Notional Amount	0	11,185
Derivatives (trading and other liabilities), fair value	$ 0	$ 109

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