Loans (Information By Class Related To Individually Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	$ 461,408		$ 487,866
Unpaid Principal Balance	512,418		569,903
Related Allowance	78,867		86,386
Average Recorded Investment	467,682		483,807
Interest Income Recognized	1,631		1,706
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	158,304		267,249
Unpaid Principal Balance	190,439		349,286
Related Allowance	15,619		37,123
Average Recorded Investment	168,068		276,345
Interest Income Recognized	229		401
Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	303,104		220,617
Unpaid Principal Balance	321,979		220,617
Related Allowance	63,248		49,263
Average Recorded Investment	299,614		207,462
Interest Income Recognized	1,402		1,305
Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	113,279		198,995
Unpaid Principal Balance	145,414		280,870
Related Allowance	0		0
Average Recorded Investment	123,016		206,459
Interest Income Recognized	218		352
Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	49,021
Unpaid Principal Balance	67,896
Related Allowance	0
Average Recorded Investment	45,648
Interest Income Recognized	0
Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	45,025		68,254
Unpaid Principal Balance	45,025		68,416
Related Allowance	15,619		37,123
Average Recorded Investment	45,052		69,886
Interest Income Recognized	11		49
Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	254,083		220,617
Unpaid Principal Balance	254,083		220,617
Related Allowance	63,248		49,263
Average Recorded Investment	253,966		207,462
Interest Income Recognized	1,402		1,305
General C I [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	60,849		63,595
Unpaid Principal Balance	73,873		80,563
Related Allowance	0		0
Average Recorded Investment	60,581		69,288
Interest Income Recognized	80		203
General C I [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	3,754		12,831
Unpaid Principal Balance	3,754		12,993
Related Allowance	1,159		5,322
Average Recorded Investment	7,027		13,637
Interest Income Recognized	0		34
TRUPs [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	10,000		47,000
Unpaid Principal Balance	10,000		47,000
Related Allowance	0		0
Average Recorded Investment	17,000		47,000
Interest Income Recognized	0		0
TRUPs [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	40,200		33,700
Unpaid Principal Balance	40,200		33,700
Related Allowance	14,304		23,825
Average Recorded Investment	36,950		33,700
Interest Income Recognized	0		0
Income C R E [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	28,136		64,190
Unpaid Principal Balance	40,034		111,789
Related Allowance	0		0
Average Recorded Investment	30,968		65,921
Interest Income Recognized	75		77
Income C R E [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	1,071		2,208
Unpaid Principal Balance	1,071		2,208
Related Allowance	156		446
Average Recorded Investment	1,075		2,215
Interest Income Recognized	11		15
Residential C R E [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	14,294		24,210
Unpaid Principal Balance	21,507		41,518
Related Allowance	0		0
Average Recorded Investment	14,467		24,250
Interest Income Recognized	63		72
Residential C R E [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment			19,515
Unpaid Principal Balance			19,515
Related Allowance			7,530
Average Recorded Investment			20,334
Interest Income Recognized			0
Home Equity [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	21,058	[1]
Unpaid Principal Balance	38,055
Related Allowance	0
Average Recorded Investment	20,698
Interest Income Recognized	0
Home Equity [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	63,066		52,411
Unpaid Principal Balance	63,066		52,411
Related Allowance	16,559		14,165
Average Recorded Investment	61,358		51,165
Interest Income Recognized	426		373
R E Installment Loans [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	13,329	[1]
Unpaid Principal Balance	15,207
Related Allowance	0
Average Recorded Investment	11,825
Interest Income Recognized	0
R E Installment Loans [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	68,474		65,145
Unpaid Principal Balance	68,474		65,145
Related Allowance	24,219		18,135
Average Recorded Investment	69,082		63,728
Interest Income Recognized	285		265
Permanent Mortgage Portfolio Segment [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	14,634	[1]
Unpaid Principal Balance	14,634
Related Allowance	0
Average Recorded Investment	13,125
Interest Income Recognized	0
Permanent Mortgage Portfolio Segment [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	121,796		102,033
Unpaid Principal Balance	121,796		102,033
Related Allowance	22,239		16,722
Average Recorded Investment	122,744		91,496
Interest Income Recognized	683		656
Credit Card Other [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	747		1,028
Unpaid Principal Balance	747		1,028
Related Allowance	231		241
Average Recorded Investment	782		1,073
Interest Income Recognized	$ 8		$ 11

[1] All discharged bankruptcy loans are charged down to an estimate of net realizable value and do not carry any allowance.