Pension and Other Postretirement Benefits (Changes in Benefit Obligations, Changes in Plan Assets and The Funded Status of Pension Plans and Other Postretirement Benefit Plans) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Change in plan assets:
Fair value of plan assets at end of year	$ 162,182	$ 151,191
Webster Pension [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	187,145	169,176
Service cost	40	30	175
Interest cost	7,365	7,307	7,463
Actuarial loss (gain)	(17,909)	15,044
Benefits paid and administrative expenses	(5,452)	(4,412)
Benefit obligation at end of year	171,189	187,145	169,176
Change in plan assets:
Fair value of plan assets at beginning of year	151,191	136,905
Actual return on plan assets	16,443	18,698
Employer contributions	0	0
Benefits paid and administrative expenses	(5,452)	(4,412)
Fair value of plan assets at end of year	162,182	151,191	136,905
Underfunded at end of year	(9,007)	(35,954)
Webster SERP [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	8,660	8,093
Service cost	0	0	0
Interest cost	289	316	350
Actuarial loss (gain)	(160)	353
Benefits paid and administrative expenses	(114)	(102)
Benefit obligation at end of year	8,675	8,660	8,093
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	114	102
Benefits paid and administrative expenses	(114)	(102)
Fair value of plan assets at end of year	0	0	0
Underfunded at end of year	(8,675)	(8,660)
Other Benefits [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	4,229	5,126
Service cost	0	0	0
Interest cost	109	177	215
Actuarial loss (gain)	(239)	(698)
Benefits paid and administrative expenses	(278)	(376)
Benefit obligation at end of year	3,821	4,229	5,126
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	278	376
Benefits paid and administrative expenses	(278)	(376)
Fair value of plan assets at end of year	0	0	0
Underfunded at end of year	$ (3,821)	$ (4,229)