Goodwill And Other Intangible Assets (Goodwill And Other Intangible Assets, Net Of Accumulated Amortization) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Goodwill [Line Items]
Goodwill	$ 529,887		$ 529,887
Core Deposit Intangibles	5,351		10,270
Consumer Deposits [Member]
Goodwill [Line Items]
Goodwill	377,605	[1]
Core Deposit Intangibles	5,351	[1]
Small Business [Member]
Goodwill [Line Items]
Goodwill	138,955	[1]
Core Deposit Intangibles	0	[1]
Community Banking [Member]
Goodwill [Line Items]
Goodwill	516,560
Core Deposit Intangibles	5,351
Other Segments [Member]
Goodwill [Line Items]
Goodwill	13,327		13,327
Core Deposit Intangibles	0		0
Retail Banking [Member]
Goodwill [Line Items]
Goodwill			516,560	[2]
Core Deposit Intangibles			$ 10,270	[2]

[1] These reporting units are included in the Community Banking segment for financial reporting purposes.

[2] The Retail Banking Segment consisted of Consumer Deposits and Business Banking.