Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

The notional amounts of derivative instruments are shown in the table below:

	At December 31,
(In thousands)	2015		2014
Interest rate derivatives	$	5,366,372	$	10,237,325
RPA-In	92,985		55,626
RPA-Out	41,798		34,822
Other	12,858		60
Total notional amount of derivative instruments	$	5,514,013	$	10,327,833

Fair Value Of Derivative Financial Instruments Designated As Cash Flow Hedges

The table below presents the fair value for derivative instruments as classified in the accompanying Consolidated Balance Sheets:

	At December 31,
	2015				2014
(In thousands)	Other Assets		Other Liabilities		Other Assets		Other Liabilities
Derivatives designated as hedging instruments:
Interest rate derivatives	$	2,507	$	1,359	$	4,481	$	4,598
Derivatives not designated as hedging instruments:
Interest rate derivatives	58,304		38,619		48,209		31,915
RPA-In	—		245		—		258
RPA-Out	153		—		182		—
Other	183		75		—		7
Total derivatives not designated as hedging instruments	$	58,640	$	38,939	$	48,391	$	32,180

Interest Rate Swaps And Caps Not Designated For Hedge Accounting

Changes in the fair value of derivatives not qualifying for hedge accounting treatment are reported as a component of other non-interest income in the accompanying Consolidated Statements of Income as follows:

	Years ended December 31,
(In thousands)	2015			2014			2013
Interest rate derivatives	$	4,361		$	4,482		$	3,244
RPA	(33		)	51			—
Other	(63		)	(253		)	(120		)
Total impact on non-interest income	$	4,265		$	4,280		$	3,124

Offsetting Assets and Liabilities

The tables below present the financial assets and liabilities for non-customer derivative positions, including futures contracts, summarized by dealer counterparty, or Webster's designated derivative clearing organization ("DCO"):

	At December 31, 2015
	Notional Amount		Hedge Accounting Positions					Non-Hedge Accounting Positions					Liability, net			Cash Collateral Posted		Net Exposure (1)
(In thousands)			Gain		Loss			Gain		Loss
Dealer A	$	391,745	$	248	$	(1,359	)	$	504	$	(3,439	)	$	(4,046	)	$	3,800	$	—
Dealer B	274,353		752		—			348		(4,104		)	(3,004		)	3,020		16
Dealer C	5,775		—		—			—		(433		)	(433		)	—		—
Dealer D	387,550		377		—			125		(2,048		)	(1,546		)	1,300		—
Dealer E	421,545		1,130		—			138		(1,912		)	(644		)	470		—
DCO	1,352,206		—		—			1,140		(28,366		)	(27,226		)	42,975		15,749
Total	$	2,833,174	$	2,507	$	(1,359	)	$	2,255	$	(40,302	)	$	(36,899	)	$	51,565

	At December 31, 2014
	Notional Amount		Hedge Accounting Positions					Non-Hedge Accounting Positions					(Liability)/ Asset, net			Cash Collateral Posted (Received)			Net Exposure (1)
(In thousands)			Gain		Loss			Gain		Loss
Dealer A	$	427,430	$	—	$	(739	)	$	1,861	$	(6,576	)	$	(5,454	)	$	5,300		$	—
Dealer B	319,663		1,494		—			978		(6,420		)	(3,948		)	3,610			—
Dealer C	11,538		—		—			—		(834		)	(834		)	—			—
Dealer D	303,663		747		—			1,147		(1,627		)	267			(400		)	—
Dealer E	424,401		2,240		—			867		(1,698		)	1,409			(1,420		)	—
DCO	6,631,936		—		(3,858		)	555		(17,629		)	(20,932		)	39,037			18,105
Total	$	8,118,631	$	4,481	$	(4,597	)	$	5,408	$	(34,784	)	$	(29,492	)	$	46,127

(1) Net positive exposure represents over-collateralized loss positions which can result from DCO initial margin requirements posted in compliance with the Dodd-Frank Wall Street Reform and Consumer Protection Act.