Loans (Accruing And Non-Accruing Loans By Class) (Details) (USD $)	Jun. 30, 2012		Dec. 31, 2011	Jun. 30, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 16,185,763,000	[1],[2]	$ 16,397,127,000	$ 16,061,646,000	[1],[2]
TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
LOCOM valuation allowance	34,200,000			35,600,000
Commercial, Financial, And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	7,981,365,000			7,180,261,000
Commercial, Financial, And Industrial [Member] | General C&I [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	6,294,391,000			6,168,207,000
Commercial, Financial, And Industrial [Member] | Loans To Mortgage Companies [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	1,274,001,000			582,527,000
Commercial, Financial, And Industrial [Member] | TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	412,973,000	[3]		429,527,000	[4]
Consumer Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	5,855,564,000			6,032,401,000
Consumer Real Estate Portfolio Segment [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	3,488,330,000	[5]		3,884,759,000	[6]
Consumer Real Estate Portfolio Segment [Member] | R/E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,367,234,000			2,147,642,000
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	1,314,169,000			1,493,636,000
Commercial Real Estate [Member] | Income CRE [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	1,224,944,000			1,310,779,000
Commercial Real Estate [Member] | Residential CRE [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	89,225,000			182,857,000
Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	755,707,000	[5]		1,059,975,000	[6]
Credit Card & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	278,958,000			295,373,000
Credit Card & Other [Member] | Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	184,647,000			191,801,000
Credit Card & Other [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	94,311,000			103,572,000
Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	15,724,802,000			15,273,253,000
30-89 Days Past Due	92,542,000			148,030,000
90+ Days Past Due	39,999,000			58,969,000
Total Accruing	15,857,343,000			15,480,252,000
Accruing [Member] | Commercial, Financial, And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	7,801,196,000			6,930,806,000
30-89 Days Past Due	21,152,000			36,859,000
90+ Days Past Due	1,735,000			398,000
Total Accruing	7,824,083,000			6,968,063,000
Accruing [Member] | Commercial, Financial, And Industrial [Member] | General C&I [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	6,189,015,000			5,999,416,000
30-89 Days Past Due	21,152,000			36,859,000
90+ Days Past Due	1,735,000			398,000
Total Accruing	6,211,902,000			6,036,673,000
Accruing [Member] | Commercial, Financial, And Industrial [Member] | Loans To Mortgage Companies [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,274,001,000			581,871,000
30-89 Days Past Due	0			0
90+ Days Past Due	0			0
Total Accruing	1,274,001,000			581,871,000
Accruing [Member] | Commercial, Financial, And Industrial [Member] | TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	338,180,000	[3]		349,519,000	[4]
30-89 Days Past Due	0	[3]		0	[4]
90+ Days Past Due	0	[3]		0	[4]
Total Accruing	338,180,000	[3]		349,519,000	[4]
Accruing [Member] | Consumer Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	5,733,546,000			5,894,557,000
30-89 Days Past Due	50,196,000			64,204,000
90+ Days Past Due	30,989,000			36,565,000
Total Accruing	5,814,731,000			5,995,326,000
Accruing [Member] | Consumer Real Estate Portfolio Segment [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	3,410,676,000	[5]		3,794,849,000	[6]
30-89 Days Past Due	31,603,000	[5]		41,577,000	[6]
90+ Days Past Due	20,401,000	[5]		25,909,000	[6]
Total Accruing	3,462,680,000	[5]		3,862,335,000	[6]
Accruing [Member] | Consumer Real Estate Portfolio Segment [Member] | R/E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	2,322,870,000			2,099,708,000
30-89 Days Past Due	18,593,000			22,627,000
90+ Days Past Due	10,588,000			10,656,000
Total Accruing	2,352,051,000			2,132,991,000
Accruing [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,205,622,000			1,287,615,000
30-89 Days Past Due	12,481,000			23,714,000
90+ Days Past Due	0			181,000
Total Accruing	1,218,103,000			1,311,510,000
Accruing [Member] | Commercial Real Estate [Member] | Income CRE [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,161,209,000			1,184,361,000
30-89 Days Past Due	6,508,000			14,322,000
90+ Days Past Due	0			181,000
Total Accruing	1,167,717,000			1,198,864,000
Accruing [Member] | Commercial Real Estate [Member] | Residential CRE [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	44,413,000			103,254,000
30-89 Days Past Due	5,973,000			9,392,000
90+ Days Past Due	0			0
Total Accruing	50,386,000			112,646,000
Accruing [Member] | Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	711,111,000	[5]		877,922,000	[6]
30-89 Days Past Due	6,775,000	[5]		20,865,000	[6]
90+ Days Past Due	5,650,000	[5]		20,674,000	[6]
Total Accruing	723,536,000	[5]		919,461,000	[6]
Accruing [Member] | Credit Card & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	273,327,000			282,353,000
30-89 Days Past Due	1,938,000			2,388,000
90+ Days Past Due	1,625,000			1,151,000
Total Accruing	276,890,000			285,892,000
Accruing [Member] | Credit Card & Other [Member] | Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	181,792,000			189,180,000
30-89 Days Past Due	1,569,000			1,480,000
90+ Days Past Due	1,286,000			1,141,000
Total Accruing	184,647,000			191,801,000
Accruing [Member] | Credit Card & Other [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	91,535,000			93,173,000
30-89 Days Past Due	369,000			908,000
90+ Days Past Due	339,000			10,000
Total Accruing	92,243,000			94,091,000
Non-Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	116,259,000			187,763,000
30-89 Days Past Due	15,229,000			21,141,000
90+ Days Past Due	196,932,000			372,490,000
Total Non-Accruing	328,420,000			581,394,000
Non-Accruing [Member] | Commercial, Financial, And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	43,834,000			70,532,000
30-89 Days Past Due	7,752,000			8,229,000
90+ Days Past Due	105,696,000			133,437,000
Total Non-Accruing	157,282,000			212,198,000
Non-Accruing [Member] | Commercial, Financial, And Industrial [Member] | General C&I [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	43,834,000			70,532,000
30-89 Days Past Due	7,752,000			8,229,000
90+ Days Past Due	30,903,000			52,773,000
Total Non-Accruing	82,489,000			131,534,000
Non-Accruing [Member] | Commercial, Financial, And Industrial [Member] | Loans To Mortgage Companies [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0			0
30-89 Days Past Due	0			0
90+ Days Past Due	0			656,000
Total Non-Accruing	0			656,000
Non-Accruing [Member] | Commercial, Financial, And Industrial [Member] | TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0	[3]		0	[4]
30-89 Days Past Due	0	[3]		0	[4]
90+ Days Past Due	74,793,000	[3]		80,008,000	[4]
Total Non-Accruing	74,793,000	[3]		80,008,000	[4]
Non-Accruing [Member] | Consumer Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	22,149,000			23,761,000
30-89 Days Past Due	3,327,000			2,718,000
90+ Days Past Due	15,357,000			10,596,000
Total Non-Accruing	40,833,000			37,075,000
Non-Accruing [Member] | Consumer Real Estate Portfolio Segment [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	13,852,000	[5]		13,332,000	[6]
30-89 Days Past Due	1,906,000	[5]		1,550,000	[6]
90+ Days Past Due	9,892,000	[5]		7,542,000	[6]
Total Non-Accruing	25,650,000	[5]		22,424,000	[6]
Non-Accruing [Member] | Consumer Real Estate Portfolio Segment [Member] | R/E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	8,297,000			10,429,000
30-89 Days Past Due	1,421,000			1,168,000
90+ Days Past Due	5,465,000			3,054,000
Total Non-Accruing	15,183,000			14,651,000
Non-Accruing [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	36,954,000			65,651,000
30-89 Days Past Due	1,851,000			7,657,000
90+ Days Past Due	57,261,000			108,818,000
Total Non-Accruing	96,066,000			182,126,000
Non-Accruing [Member] | Commercial Real Estate [Member] | Income CRE [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	17,449,000			35,221,000
30-89 Days Past Due	930,000			6,552,000
90+ Days Past Due	38,848,000			70,142,000
Total Non-Accruing	57,227,000			111,915,000
Non-Accruing [Member] | Commercial Real Estate [Member] | Residential CRE [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	19,505,000			30,430,000
30-89 Days Past Due	921,000			1,105,000
90+ Days Past Due	18,413,000			38,676,000
Total Non-Accruing	38,839,000			70,211,000
Non-Accruing [Member] | Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	13,054,000	[5]		27,813,000	[6]
30-89 Days Past Due	2,299,000	[5]		2,537,000	[6]
90+ Days Past Due	16,818,000	[5]		110,164,000	[6]
Total Non-Accruing	32,171,000	[5]		140,514,000	[6]
Non-Accruing [Member] | Credit Card & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	268,000			6,000
30-89 Days Past Due	0			0
90+ Days Past Due	1,800,000			9,475,000
Total Non-Accruing	2,068,000			9,481,000
Non-Accruing [Member] | Credit Card & Other [Member] | Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0			0
30-89 Days Past Due	0			0
90+ Days Past Due	0			0
Total Non-Accruing	0			0
Non-Accruing [Member] | Credit Card & Other [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	268,000			6,000
30-89 Days Past Due	0			0
90+ Days Past Due	1,800,000			9,475,000
Total Non-Accruing	$ 2,068,000			$ 9,481,000

[1] Balances as of June 30, 2012 and 2011 include $19.0 million and $29.9 million of reserves, respectively, and $447.5 million and $649.2 million of balances in restricted consumer real estate loans and secured borrowings, respectively.

[2] Balances as of June 30, 2012 and 2011 include $1.3 million and $3.1 million of reserves, respectively, and $16.9 million and $44.9 million of balances in restricted permanent mortgage loans and secured borrowings, respectively.

[3] Includes LOCOM valuation allowance $34.2 million.

[4] Includes LOCOM valuation allowance $35.6 million.

[5] Includes restricted real estate loans and secured borrowings.

[6] Includes restricted real estate loans and secured borrowings