Long-Term Debt (Schedule Of Long-Term Debt) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Debt Instrument [Line Items]
Senior notes	$ 150,000		$ 150,000
Subordinated Debt	0	[1]	102,579	[1]
Junior subordinated debt	77,320	[2]	77,320	[2]
Total notes and subordinated debt	227,320		329,899
Unamortized discount, net (3)	(21)	[3]	(93)	[3]
Hedge accounting adjustments (3)	1,066	[3]	4,470	[3]
Total long-term debt	$ 228,365		$ 334,276
Senior Notes [Member]
Debt Instrument [Line Items]
Stated interest rate	5.125%
Subordinated Debt [Member]
Debt Instrument [Line Items]
Stated interest rate	5.875%	[1]
Webster Statutory Trust I [Member]
Debt Instrument [Line Items]
Stated interest rate	3.194%	[2]
Interest rate spread of LIBOR plus	2.95%
Long-term debt, variable interest rate	3.194%		3.258%

[1] The Bank used cash on hand to pay off the subordinated fixed-rate notes that matured on January 15, 2013.

[2] The interest rate on Webster Statutory Trust I floating-rate notes, which varies quarterly based on 3-month LIBOR plus 2.95%, was 3.194% at December 31, 2013 and 3.258% at December 31, 2012.

[3] Related to senior fixed-rate notes.