Loans (Accruing And Non-Accruing Loans By Class) (Details) (USD $)	Sep. 30, 2011		Dec. 31, 2010	Sep. 30, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 16,241,402,000	[1],[2]	$ 16,782,572,000	$ 17,059,489,000	[1],[2]
General C&I [Member] | Commercial, Financial, And Industrial [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	6,068,266,000			5,591,429,000
30-89 Days Past Due	28,618,000			34,956,000
90+ Days Past Due	4,181,000			2,486,000
Total Accruing	6,101,065,000			5,628,871,000
Loans To Mortgage Companies [Member] | Commercial, Financial, And Industrial [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,065,823,000			1,091,160,000
30-89 Days Past Due	174,000
Total Accruing	1,065,997,000			1,091,160,000
TRUPs [Member] | Commercial, Financial, And Industrial [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	338,180,000	[3]		359,339,000	[4]
90+ Days Past Due				12,500,000	[4]
Total Accruing	338,180,000	[3]		371,839,000	[4]
Income CRE [Member] | Accruing [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,187,094,000			1,334,071,000
30-89 Days Past Due	18,634,000			30,639,000
90+ Days Past Due	256,000			311,000
Total Accruing	1,205,984,000			1,365,021,000
Residential CRE [Member] | Accruing [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	85,823,000			170,332,000
30-89 Days Past Due	869,000			2,754,000
90+ Days Past Due				268,000
Total Accruing	86,692,000			173,354,000
Commercial, Financial, And Industrial [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	7,472,269,000			7,041,928,000
30-89 Days Past Due	28,792,000			34,956,000
90+ Days Past Due	4,181,000			14,986,000
Total Accruing	7,505,242,000			7,091,870,000
Consumer Real Estate [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	5,779,080,000			6,348,810,000
30-89 Days Past Due	72,328,000			98,232,000
90+ Days Past Due	31,700,000			47,686,000
Total Accruing	5,883,108,000			6,494,728,000
Consumer Real Estate [Member] | Accruing [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	3,692,346,000	[5]		4,102,179,000	[5]
30-89 Days Past Due	46,053,000	[5]		59,883,000	[5]
90+ Days Past Due	22,574,000	[5]		33,707,000	[5]
Total Accruing	3,760,973,000	[5]		4,195,769,000	[5]
Consumer Real Estate [Member] | Accruing [Member] | R/E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	2,086,734,000			2,246,631,000
30-89 Days Past Due	26,275,000			38,349,000
90+ Days Past Due	9,126,000			13,979,000
Total Accruing	2,122,135,000			2,298,959,000
Permanent Mortgage [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	808,293,000	[5]		849,345,000	[5]
30-89 Days Past Due	31,724,000	[5]		30,872,000	[5]
90+ Days Past Due	13,205,000	[5]		23,143,000	[5]
Total Accruing	853,222,000	[5]		903,360,000	[5]
Credit Card And Other [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	289,633,000			289,790,000
30-89 Days Past Due	2,418,000			4,199,000
90+ Days Past Due	1,448,000			2,001,000
Total Accruing	293,499,000			295,990,000
Credit Card And Other [Member] | Accruing [Member] | Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	198,569,000			187,464,000
30-89 Days Past Due	1,816,000			1,982,000
90+ Days Past Due	1,377,000			1,772,000
Total Accruing	201,762,000			191,218,000
Credit Card And Other [Member] | Accruing [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	91,064,000	[6]		102,326,000	[7]
30-89 Days Past Due	602,000	[6]		2,217,000	[7]
90+ Days Past Due	71,000	[6]		229,000	[7]
Total Accruing	91,737,000	[6]		104,772,000	[7]
Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	15,622,192,000			16,034,276,000
30-89 Days Past Due	154,765,000			201,652,000
90+ Days Past Due	50,790,000			88,395,000
Total Accruing	15,827,747,000			16,324,323,000
Accruing [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,272,917,000			1,504,403,000
30-89 Days Past Due	19,503,000			33,393,000
90+ Days Past Due	256,000			579,000
Total Accruing	1,292,676,000			1,538,375,000
General C&I [Member] | Commercial, Financial, And Industrial [Member] | Non-Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	52,141,000			117,246,000
30-89 Days Past Due	12,844,000			14,322,000
90+ Days Past Due	51,323,000			53,740,000
Total Non-Accruing	116,308,000			185,308,000
Loans To Mortgage Companies [Member] | Commercial, Financial, And Industrial [Member] | Non-Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90+ Days Past Due	491,000			1,925,000
Total Non-Accruing	491,000			1,925,000
TRUPs [Member] | Commercial, Financial, And Industrial [Member] | Non-Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90+ Days Past Due				57,883,000	[4]
Total Non-Accruing				57,883,000	[4]
Commercial, Financial, And Industrial [Member] | Non-Accruing [Member] | TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90+ Days Past Due	83,708,000	[3]
Total Non-Accruing	83,708,000	[3]
Income CRE [Member] | Non-Accruing [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	18,409,000			26,433,000
30-89 Days Past Due	8,093,000			13,330,000
90+ Days Past Due	54,197,000			114,158,000
Total Non-Accruing	80,699,000			153,921,000
Residential CRE [Member] | Non-Accruing [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	34,874,000			31,715,000
30-89 Days Past Due	1,237,000			708,000
90+ Days Past Due	18,854,000			117,948,000
Total Non-Accruing	54,965,000			150,371,000
Commercial, Financial, And Industrial [Member] | Non-Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	52,141,000			117,246,000
30-89 Days Past Due	12,844,000			14,322,000
90+ Days Past Due	135,522,000			113,548,000
Total Non-Accruing	200,507,000			245,116,000
Consumer Real Estate [Member] | Non-Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	30,603,000			17,446,000
30-89 Days Past Due	4,062,000			1,866,000
90+ Days Past Due	10,537,000			9,473,000
Total Non-Accruing	45,202,000			28,785,000
Consumer Real Estate [Member] | Non-Accruing [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	17,098,000	[5]		6,503,000	[5]
30-89 Days Past Due	1,143,000	[5]		1,289,000	[5]
90+ Days Past Due	7,835,000	[5]		7,045,000	[5]
Total Non-Accruing	26,076,000	[5]		14,837,000	[5]
Consumer Real Estate [Member] | Non-Accruing [Member] | R/E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	13,505,000			10,943,000
30-89 Days Past Due	2,919,000			577,000
90+ Days Past Due	2,702,000			2,428,000
Total Non-Accruing	19,126,000			13,948,000
Permanent Mortgage [Member] | Non-Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	8,214,000	[5]		16,529,000	[5]
30-89 Days Past Due	448,000	[5]		3,334,000	[5]
90+ Days Past Due	18,575,000	[5]		106,735,000	[5]
Total Non-Accruing	27,237,000	[5]		126,598,000	[5]
Credit Card And Other [Member] | Non-Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	5,000
90+ Days Past Due	5,040,000			30,375,000
Total Non-Accruing	5,045,000			30,375,000
Credit Card And Other [Member] | Non-Accruing [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	5,000	[6]
90+ Days Past Due	5,040,000	[6]		30,375,000	[7]
Total Non-Accruing	5,045,000	[6]		30,375,000	[7]
Non-Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	144,246,000			209,369,000
30-89 Days Past Due	26,684,000			33,560,000
90+ Days Past Due	242,725,000			492,237,000
Total Non-Accruing	413,655,000			735,166,000
Non-Accruing [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	53,283,000			58,148,000
30-89 Days Past Due	9,330,000			14,038,000
90+ Days Past Due	73,051,000			232,106,000
Total Non-Accruing	135,664,000			304,292,000
TRUPs [Member] | Commercial, Financial, And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	421,888,000	[3]		429,722,000	[4]
General C&I [Member] | Commercial, Financial, And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	6,217,373,000			5,814,179,000
Loans To Mortgage Companies [Member] | Commercial, Financial, And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,066,488,000			1,093,085,000
Commercial, Financial, And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	7,705,749,000			7,336,986,000
Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	5,928,310,000			6,523,513,000
Consumer Real Estate [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	3,787,049,000	[5]		4,210,606,000	[5]
Consumer Real Estate [Member] | R/E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	2,141,261,000			2,312,907,000
Income CRE [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,286,683,000			1,518,942,000
Residential CRE [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	141,657,000			323,725,000
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,428,340,000			1,842,667,000
Permanent Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	880,459,000	[5]		1,029,958,000	[5]
Credit Card And Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	298,544,000			326,365,000
Credit Card And Other [Member] | Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	201,762,000			191,218,000
Credit Card And Other [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	96,782,000	[6]		135,147,000	[7]
TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
LOCOM valuation allowance	$ 35,300,000			$ 35,600,000

[1] Q3 2011 and Q3 2010 include $26.9 million and $41.9 million of reserves, respectively, and $623.3 million and $735.8 million of balances in restricted consumer real estate loans, respectively.

[2] Q3 2011 and Q3 2010 include $5.5 million and $5.9 million of reserves, respectively, and $42.4 million and $60.7 million of balances in restricted permanent mortgage loans, respectively.

[3] Includes LOCOM valuation allowance $35.3 million.

[4] Includes LOCOM valuation allowance $35.6 million.

[5] Includes restricted loans.

[6] Includes OTC and non real estate installment loans.

[7] Includes OTC. All nonaccruing balances reflect OTC.