Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The following table presents the notional amounts and fair values of derivative positions:

	At December 31, 2019								At December 31, 2018
	Asset Derivatives				Liability Derivatives				Asset Derivatives				Liability Derivatives
(In thousands)	Notional Amounts		Fair Value		Notional Amounts		Fair Value		Notional Amounts		Fair Value		Notional Amounts		Fair Value
Designated as hedging instruments:
Interest rate derivatives (1) (2)	$	1,225,000	$	11,855	$	300,000	$	3,153	$	325,000	$	3,050	$	—	$	—
Not designated as hedging instruments:
Interest rate derivatives (1)	4,869,139		133,455		4,090,522		9,732		4,435,530		42,205		3,643,985		38,029
Mortgage banking derivatives (3)	27,873		329		57,000		110		13,599		226		17,000		293
Other (4)	76,544		398		275,279		818		85,432		797		140,601		688
Total not designated as hedging instruments	4,973,556		134,182		4,422,801		10,660		4,534,561		43,228		3,801,586		39,010
Gross derivative instruments, before netting	$	6,198,556	146,037		$	4,722,801	13,813		$	4,859,561	46,278		$	3,801,586	39,010
Less: Master netting agreements			4,779				4,779				2,495				2,495
Cash collateral			8,100				1,871				4,936				—
Total derivative instruments, after netting			$	133,158			$	7,163			$	38,847			$	36,515

Schedule of Net Investment Hedges, Statements of Financial Performance and Financial Position, Location [Table Text Block]

The following table presents fair value positions transitioned from gross to net upon application of counterparty netting agreements:

	At December 31, 2019
(In thousands)	Gross Amount		Offset Amount		Net Amount on Balance Sheet		Amounts Not Offset		Net Amounts
Asset derivatives	$	13,012	12,879		$	133	$	299	$	432
Liability derivatives	6,710		6,650		60		329		389
	At December 31, 2018
(In thousands)	Gross Amount		Offset Amount		Net Amount on Balance Sheet		Amounts Not Offset		Net Amounts
Asset derivatives	$	9,928	$	7,431	$	2,497	$	—	$	2,497
Liability derivatives	2,566		2,495		71		756		827

Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

The following table presents the change in fair value for derivatives designated as fair value hedges as well as the offsetting change in fair value on the hedged item and the income statement effect of derivatives designated as cash flow hedges:

	Recognized In	Years ended December 31,
(In thousands)	Net Interest Income	2019		2018		2017
Fair value hedges:
Recognized on derivatives	Long-term debt	$	17,486	$	—	$	—
Recognized on hedged items	Long-term debt	(17,486)		—		—
Net recognized on fair value hedges		$	—	$	—	$	—
Cash flow hedges:
Interest rate derivatives	Long-term debt	$	4,241	$	6,557	$	7,885
Interest rate derivatives	Interest and fees on loans and leases	1,314		—		—
Net recognized on cash flow hedges		$	5,555	$	6,557	$	7,885

Additional information related to fair value hedges:

Consolidated Balance Sheet Line Item in Which Hedged Item is Located	Carrying Amount of Hedged Item				Cumulative Amount of Fair Value Hedging Adjustment Included in Carrying Amount
	At December 31,				At December 31,
(In thousands)	2019		2018		2019		2018
Long-term debt	$	317,486	$	—	$	17,486	$	—

Other Derivatives Not Designated For Hedge Accounting

The following table presents the effect on the income statement for derivatives not designated as hedging instruments:

	Recognized In	Years ended December 31,
(In thousands)	Non-interest Income	2019		2018		2017
Interest rate derivatives	Other income	$	8,477	$	10,376	$	2,702
Mortgage banking derivatives	Mortgage banking activities	(6)		(378)		(2,062)
Other	Other income	1,100		2,391		(526)
Total not designated as hedging instruments		$	9,571	$	12,389	$	114