Loans And Leases (Summary Of The Recorded Investment Of Company's TDRs) (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2014		Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Total recorded investment of TDRs	$ 323,131		$ 341,898
Accruing TDRs performing under modified terms more than one year	68.40%		58.20%
Specific reserves for TDRs included in the balance of allowance for loan and lease losses	20,745		20,360
Additional funds committed to borrowers in TDR status	495		1,262
Accruing TDR [Member]
Financing Receivable, Impaired [Line Items]
Total recorded investment of TDRs	236,128	[1]	238,926	[1]
Non Accrual TDR [Member]
Financing Receivable, Impaired [Line Items]
Total recorded investment of TDRs	$ 87,003	[1]	$ 102,972	[1]

[1] A total of $17.6 million in residential and consumer loans was reclassified from non-accrual to accrual status in the nine months ended September 30, 2014 as a result of updated regulatory guidance issued in the first quarter of 2014.