Loans And Leases (Allowance For Loan And Lease Losses By Portfolio Segment) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	$ 167,840	$ 210,288	$ 177,129	$ 233,487
Provision (benefit) charged to expense	8,500	5,000	16,000	9,000
Losses charged off	(18,113)	(22,208)	(39,642)	(56,850)
Recoveries	5,215	5,677	9,955	13,120
Balance, end of period	163,442	198,757	163,442	198,757
Ending balance: individually evaluated for impairment	21,918	33,070	21,918	33,070
Ending balance: collectively evaluated for impairment	141,524	165,687	141,524	165,687
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	27,891	32,039	29,474	34,565
Provision (benefit) charged to expense	657	3,840	1,760	4,288
Losses charged off	(2,112)	(3,952)	(5,048)	(7,067)
Recoveries	440	136	690	277
Balance, end of period	26,876	32,063	26,876	32,063
Ending balance: individually evaluated for impairment	14,010	17,086	14,010	17,086
Ending balance: collectively evaluated for impairment	12,866	14,977	12,866	14,977
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	50,369	64,263	54,254	67,785
Provision (benefit) charged to expense	4,360	6,621	9,060	11,096
Losses charged off	(7,331)	(11,349)	(17,738)	(21,400)
Recoveries	2,261	2,702	4,083	4,756
Balance, end of period	49,659	62,237	49,659	62,237
Ending balance: individually evaluated for impairment	3,506	4,568	3,506	4,568
Ending balance: collectively evaluated for impairment	46,153	57,669	46,153	57,669
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	44,050	51,003	46,566	60,681
Provision (benefit) charged to expense	4,895	1,763	5,119	5,279
Losses charged off	(6,156)	(5,676)	(10,495)	(20,670)
Recoveries	1,058	1,678	2,657	3,478
Balance, end of period	43,847	48,768	43,847	48,768
Ending balance: individually evaluated for impairment	880	5,761	880	5,761
Ending balance: collectively evaluated for impairment	42,967	43,007	42,967	43,007
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	30,894	40,187	30,834	45,013
Provision (benefit) charged to expense	(479)	(2,661)	3,100	(2,739)
Losses charged off	(2,510)	(1,066)	(6,270)	(6,914)
Recoveries	552	46	793	1,146
Balance, end of period	28,457	36,506	28,457	36,506
Ending balance: individually evaluated for impairment	3,522	5,652	3,522	5,652
Ending balance: collectively evaluated for impairment	24,935	30,854	24,935	30,854
Equipment Financing [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	3,636	7,796	4,001	8,943
Provision (benefit) charged to expense	(933)	(3,313)	(2,039)	(6,174)
Losses charged off	(4)	(165)	(91)	(799)
Recoveries	904	1,115	1,732	3,463
Balance, end of period	3,603	5,433	3,603	5,433
Ending balance: individually evaluated for impairment	0	3	0	3
Ending balance: collectively evaluated for impairment	3,603	5,430	3,603	5,430
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	11,000	15,000	12,000	16,500
Provision (benefit) charged to expense	0	(1,250)	(1,000)	(2,750)
Losses charged off	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	11,000	13,750	11,000	13,750
Ending balance: individually evaluated for impairment	0	0	0	0
Ending balance: collectively evaluated for impairment	$ 11,000	$ 13,750	$ 11,000	$ 13,750