Loans (Information By Class Related To Individually Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	$ 487,866	$ 619,342
Unpaid Principal Balance	569,903	778,181
Related Allowance	86,386	103,882
Average Recorded Investment	483,807	621,097
Interest Income Recognized	1,706	1,325
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	267,249	435,567
Unpaid Principal Balance	349,286	594,406
Related Allowance	37,123	68,217
Average Recorded Investment	276,345	445,558
Interest Income Recognized	401	531
Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	220,617	183,775
Unpaid Principal Balance	220,617	183,775
Related Allowance	49,263	35,665
Average Recorded Investment	207,462	175,539
Interest Income Recognized	1,305	794
Impaired Loans With No Related Allowance Recorded [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	198,995	315,716
Unpaid Principal Balance	280,870	467,626
Average Recorded Investment	206,459	276,435
Interest Income Recognized	352	471
Impaired Loans With Related Allowance Recorded [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	68,254	119,851
Unpaid Principal Balance	68,416	126,780
Related Allowance	37,123	68,217
Average Recorded Investment	69,886	169,123
Interest Income Recognized	49	60
Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	220,617	183,775
Unpaid Principal Balance	220,617	183,775
Related Allowance	49,263	35,665
Average Recorded Investment	207,462	175,539
Interest Income Recognized	1,305	794
General C&I [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	63,595	90,225
Unpaid Principal Balance	80,563	112,750
Average Recorded Investment	69,288	66,045
Interest Income Recognized	203	257
General C&I [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	12,831	55,942
Unpaid Principal Balance	12,993	62,871
Related Allowance	5,322	29,696
Average Recorded Investment	13,637	84,741
Interest Income Recognized	34	60
TRUPs [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	47,000	38,000
Unpaid Principal Balance	47,000	38,000
Average Recorded Investment	47,000	33,000
TRUPs [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	33,700	30,000
Unpaid Principal Balance	33,700	30,000
Related Allowance	23,825	27,266
Average Recorded Investment	33,700	30,000
Income CRE [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	64,190	123,269
Unpaid Principal Balance	111,789	200,128
Average Recorded Investment	65,921	115,578
Interest Income Recognized	77	139
Income CRE [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	2,208	11,603
Unpaid Principal Balance	2,208	11,603
Related Allowance	446	3,378
Average Recorded Investment	2,215	23,072
Interest Income Recognized	15
Residential CRE [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	24,210	64,222
Unpaid Principal Balance	41,518	116,748
Average Recorded Investment	24,250	61,812
Interest Income Recognized	72	75
Residential CRE [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	19,515	22,306
Unpaid Principal Balance	19,515	22,306
Related Allowance	7,530	7,877
Average Recorded Investment	20,334	31,310
HELOC [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	52,411	30,398
Unpaid Principal Balance	52,411	30,398
Related Allowance	14,165	10,073
Average Recorded Investment	51,165	27,886
Interest Income Recognized	373	140
R/E Installment Loans [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	65,145	48,173
Unpaid Principal Balance	65,145	48,173
Related Allowance	18,135	10,895
Average Recorded Investment	67,676	46,286
Interest Income Recognized	265	162
Permanent Mortgage Portfolio Segment [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	102,033	103,890
Unpaid Principal Balance	102,033	103,890
Related Allowance	16,722	14,248
Average Recorded Investment	87,548	100,328
Interest Income Recognized	656	480
Credit Card & Other [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	1,028	1,314
Unpaid Principal Balance	1,028	1,314
Related Allowance	241	449
Average Recorded Investment	1,073	1,039
Interest Income Recognized	$ 11	$ 12