Loans (Information By Class Related To Individually Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011	Sep. 30, 2012		Sep. 30, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	$ 501,239		$ 502,359	$ 501,239		$ 502,359
Unpaid Principal Balance	601,901		618,192	601,901		618,192
Related Allowance	81,709		101,541	81,709		101,541
Average Recorded Investment	483,433		551,958	473,093		562,604
Interest Income Recognized on impaired loan	1,754		1,613	5,280		4,743
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	225,744		341,187	225,744		341,187
Unpaid Principal Balance	284,753		457,020	284,753		457,020
Related Allowance	28,855		54,498	28,855		54,498
Average Recorded Investment	240,081		369,231	255,595		398,367
Interest Income Recognized on impaired loan	355		610	1,145		2,125
Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	275,495		161,172	275,495		161,172
Unpaid Principal Balance	317,148		161,172	317,148		161,172
Related Allowance	52,854		47,043	52,854		47,043
Average Recorded Investment	243,352		182,727	217,498		164,237
Interest Income Recognized on impaired loan	1,399		1,003	4,135		2,618
Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	170,056		250,487	170,056		250,487
Unpaid Principal Balance	227,271		358,864	227,271		358,864
Related Allowance	0		0	0		0
Average Recorded Investment	176,448		269,641	191,991		243,820
Interest Income Recognized on impaired loan	308		560	1,002		1,924
Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	35,064			35,064
Unpaid Principal Balance	76,717			76,717
Average Recorded Investment	381			128
Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	55,688		90,700	55,688		90,700
Unpaid Principal Balance	57,482		98,156	57,482		98,156
Related Allowance	28,855		54,498	28,855		54,498
Average Recorded Investment	63,633		99,590	63,604		154,547
Interest Income Recognized on impaired loan	47		50	143		201
Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	240,431		161,172	240,431		161,172
Unpaid Principal Balance	240,431		161,172	240,431		161,172
Related Allowance	52,854		47,043	52,854		47,043
Average Recorded Investment	242,971		182,727	217,370		164,237
Interest Income Recognized on impaired loan	1,399		1,003	4,135		2,618
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	59,215		83,699	59,215		83,699
Unpaid Principal Balance	75,587		110,815	75,587		110,815
Related Allowance	0		0	0		0
Average Recorded Investment	60,669		87,820	67,098		62,782
Interest Income Recognized on impaired loan	142		328	549		817
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	20,580		36,245	20,580		36,245
Unpaid Principal Balance	22,374		43,691	22,374		43,691
Related Allowance	7,351		20,280	7,351		20,280
Average Recorded Investment	19,764		40,100	17,512		74,893
Interest Income Recognized on impaired loan	33		35	100		175
T R U Ps [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	45,892		60,700	45,892		60,700
Unpaid Principal Balance	45,892		60,700	45,892		60,700
Related Allowance	0		0	0		0
Average Recorded Investment	46,446		58,850	46,446		44,350
Interest Income Recognized on impaired loan	0		0	0		0
T R U Ps [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	33,700		30,000	33,700		30,000
Unpaid Principal Balance	33,700		30,000	33,700		30,000
Related Allowance	21,321		26,220	21,321		26,220
Average Recorded Investment	33,700		30,000	33,700		30,000
Interest Income Recognized on impaired loan	0		0	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	44,956		77,245	44,956		77,245
Unpaid Principal Balance	69,684		131,012	69,684		131,012
Related Allowance	0		0	0		0
Average Recorded Investment	48,166		87,090	56,305		92,566
Interest Income Recognized on impaired loan	96		150	249		681
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	1,408		2,722	1,408		2,722
Unpaid Principal Balance	1,408		2,732	1,408		2,732
Related Allowance	183		348	183		348
Average Recorded Investment	1,469		7,426	1,815		18,631
Interest Income Recognized on impaired loan	14		15	43		26
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	19,993		28,843	19,993		28,843
Unpaid Principal Balance	36,108		56,337	36,108		56,337
Related Allowance	0		0	0		0
Average Recorded Investment	21,167		35,881	22,142		44,122
Interest Income Recognized on impaired loan	70		82	204		426
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	0		21,733	0		21,733
Unpaid Principal Balance	0		21,733	0		21,733
Related Allowance	0		7,650	0		7,650
Average Recorded Investment	8,700		22,064	10,577		31,023
Interest Income Recognized on impaired loan	0		0	0		0
Home Equity [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	13,086	[1]		13,086	[1]
Unpaid Principal Balance	36,927			36,927
Average Recorded Investment	142			48
Home Equity [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	57,020		44,624	57,020		44,624
Unpaid Principal Balance	57,020		44,624	57,020		44,624
Related Allowance	12,980		21,732	12,980		21,732
Average Recorded Investment	57,097		40,620	53,469		34,999
Interest Income Recognized on impaired loan	389		224	1,173		551
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	8,696	[1]		8,696	[1]
Unpaid Principal Balance	22,750			22,750
Average Recorded Investment	95			32
R E Installment Loans [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	66,679		59,717	66,679		59,717
Unpaid Principal Balance	66,679		59,717	66,679		59,717
Related Allowance	18,649		18,777	18,649		18,777
Average Recorded Investment	67,272		55,594	68,444		52,058
Interest Income Recognized on impaired loan	294		232	835		568
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	13,282	[1]		13,282	[1]
Unpaid Principal Balance	17,040			17,040
Average Recorded Investment	144			48
Permanent Mortgage Portfolio Segment [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	115,819		55,693	115,819		55,693
Unpaid Principal Balance	115,819		55,693	115,819		55,693
Related Allowance	20,988		5,692	20,988		5,692
Average Recorded Investment	117,679		85,351	94,442		76,229
Interest Income Recognized on impaired loan	714		535	2,104		1,463
Credit Card Other [Member] | Impaired Loans With Related Allowance Recorded [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	913		1,138	913		1,138
Unpaid Principal Balance	913		1,138	913		1,138
Related Allowance	237		842	237		842
Average Recorded Investment	923		1,162	1,015		951
Interest Income Recognized on impaired loan	$ 2		$ 12	$ 23		$ 36

[1] All discharged bankruptcy loans were charged down to an estimate of collateral value per the recently issued regulatory guidance and do not carry any allowance.