Loans And Leases (Allowance For Loan And Lease Losses By Portfolio Segment) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	$ 163,442	$ 198,757	$ 177,129	$ 233,487
Provision (benefit) charged to expense	8,500	5,000	24,500	14,000
Losses charged off	(16,951)	(23,980)	(56,593)	(80,830)
Recoveries	2,554	6,312	12,509	19,432
Balance, end of period	157,545	186,089	157,545	186,089
Ending balance: individually evaluated for impairment	23,311	30,923	23,311	30,923
Ending balance: collectively evaluated for impairment	134,234	155,166	134,234	155,166
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	26,876	32,063	29,474	34,565
Provision (benefit) charged to expense	1,075	1,110	2,835	5,398
Losses charged off	(3,800)	(3,262)	(8,848)	(10,329)
Recoveries	152	353	842	630
Balance, end of period	24,303	30,264	24,303	30,264
Ending balance: individually evaluated for impairment	13,003	15,420	13,003	15,420
Ending balance: collectively evaluated for impairment	11,300	14,844	11,300	14,844
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	49,659	62,237	54,254	67,785
Provision (benefit) charged to expense	(1,732)	9,740	7,328	20,836
Losses charged off	(5,827)	(9,234)	(23,565)	(30,634)
Recoveries	1,188	1,249	5,271	6,005
Balance, end of period	43,288	63,992	43,288	63,992
Ending balance: individually evaluated for impairment	3,281	7,795	3,281	7,795
Ending balance: collectively evaluated for impairment	40,007	56,197	40,007	56,197
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	43,847	48,768	46,566	60,681
Provision (benefit) charged to expense	3,783	2,944	8,902	8,223
Losses charged off	(3,245)	(8,642)	(13,740)	(29,312)
Recoveries	426	1,297	3,083	4,775
Balance, end of period	44,811	44,367	44,811	44,367
Ending balance: individually evaluated for impairment	1,630	4,552	1,630	4,552
Ending balance: collectively evaluated for impairment	43,181	39,815	43,181	39,815
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	28,457	36,506	30,834	45,013
Provision (benefit) charged to expense	6,046	(4,315)	9,146	(7,054)
Losses charged off	(4,069)	(2,655)	(10,339)	(9,569)
Recoveries	105	302	898	1,448
Balance, end of period	30,539	29,838	30,539	29,838
Ending balance: individually evaluated for impairment	5,397	3,153	5,397	3,153
Ending balance: collectively evaluated for impairment	25,142	26,685	25,142	26,685
Equipment Financing [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	3,603	5,433	4,001	8,943
Provision (benefit) charged to expense	(672)	(3,479)	(2,711)	(9,653)
Losses charged off	(10)	(187)	(101)	(986)
Recoveries	683	3,111	2,415	6,574
Balance, end of period	3,604	4,878	3,604	4,878
Ending balance: individually evaluated for impairment	0	3	0	3
Ending balance: collectively evaluated for impairment	3,604	4,875	3,604	4,875
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	11,000	13,750	12,000	16,500
Provision (benefit) charged to expense	0	(1,000)	(1,000)	(3,750)
Losses charged off	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	11,000	12,750	11,000	12,750
Ending balance: individually evaluated for impairment	0	0	0	0
Ending balance: collectively evaluated for impairment	$ 11,000	$ 12,750	$ 11,000	$ 12,750