Pension and Other Postretirement Benefits (Amount Recognized in The Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Webster Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Prepaid expenses and other assets	$ 0	$ 0
Accrued expenses and other liabilities	(9,007)	(35,954)
Underfunded	(9,007)	(35,954)
Webster SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Prepaid expenses and other assets	0	0
Accrued expenses and other liabilities	(8,675)	(8,660)
Underfunded	(8,675)	(8,660)
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Prepaid expenses and other assets	0	0
Accrued expenses and other liabilities	(3,821)	(4,229)
Underfunded	$ (3,821)	$ (4,229)