Loans (Accruing And Non-Accruing Loans By Class) (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	$ 14,878,542,000				$ 15,633,670,000
Total Non-Accruing	240,919,000				256,000,000
Loans, net of unearned income	15,119,461,000		15,389,074,000		15,889,670,000
Commercial Financial And Industrial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	7,700,628,000				7,978,021,000
Total Non-Accruing	52,367,000				113,165,000
Loans, net of unearned income	7,752,995,000		7,923,576,000		8,091,186,000
Consumer Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	5,125,993,000				5,522,280,000
Total Non-Accruing	132,021,000				67,900,000
Loans, net of unearned income	5,258,014,000	[1]	5,333,371,000	[1]	5,590,180,000	[1]
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	1,137,484,000				1,077,292,000
Total Non-Accruing	14,934,000				38,587,000
Loans, net of unearned income	1,152,418,000		1,133,279,000		1,115,879,000
Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	582,041,000				758,651,000
Total Non-Accruing	40,201,000				34,631,000
Loans, net of unearned income	622,242,000	[2]	662,242,000	[2]	793,282,000	[2]
Credit Card And Other Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	333,792,000		336,606,000		299,143,000
General C I [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	6,648,913,000				6,507,233,000
Total Non-Accruing	39,111,000				66,381,000
Loans, net of unearned income	6,688,024,000				6,573,614,000
Loans To Mortgage Companies [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	709,411,000				1,129,728,000
Total Non-Accruing	141,000				351,000
Loans, net of unearned income	709,552,000				1,130,079,000
TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	335,543,000	[3]			341,060,000	[4]
Total Non-Accruing	13,115,000	[3]			46,433,000	[4]
Loans, net of unearned income	348,658,000	[3]			387,493,000	[4]
LOCOM valuation allowance	26,600,000				30,900,000
Income C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	1,060,798,000				1,035,716,000
Total Non-Accruing	12,216,000				26,872,000
Loans, net of unearned income	1,073,014,000				1,062,588,000
Residential C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	37,798,000				41,576,000
Total Non-Accruing	2,718,000				11,715,000
Loans, net of unearned income	40,516,000				53,291,000
Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	2,660,956,000				3,069,532,000
Total Non-Accruing	86,861,000				39,042,000
Loans, net of unearned income	2,747,817,000				3,108,574,000
R E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	2,464,334,000				2,452,748,000
Total Non-Accruing	45,160,000				28,858,000
Loans, net of unearned income	2,509,494,000				2,481,606,000
Credit Card Class [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	1,810,000				1,430,000
90+ Days Past Due	1,622,000				1,483,000
Loans, net of unearned income	183,443,000				181,223,000
Other Consumer Loans Class [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	761,000				723,000
90+ Days Past Due	130,000				90,000
Loans, net of unearned income	150,349,000				117,920,000
C I Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	6,761,000
Total Non-Accruing	0
Loans, net of unearned income	6,761,000
C R E Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	38,888,000
Total Non-Accruing	0
Loans, net of unearned income	38,888,000
R E Installment Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	703,000
Total Non-Accruing	0
Loans, net of unearned income	703,000
Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	14,772,541,000				15,527,027,000
30-89 Days Past Due	79,406,000				66,925,000
90+ Days Past Due	26,595,000				39,718,000
Accruing [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	7,679,585,000				7,964,416,000
30-89 Days Past Due	19,121,000				13,177,000
90+ Days Past Due	1,922,000				428,000
Accruing [Member] | Consumer Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	5,072,914,000				5,454,798,000
30-89 Days Past Due	34,546,000				40,891,000
90+ Days Past Due	18,533,000				26,591,000
Accruing [Member] | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,118,874,000				1,072,613,000
30-89 Days Past Due	17,067,000				4,679,000
90+ Days Past Due	1,543,000				0
Accruing [Member] | Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	573,095,000				741,500,000
30-89 Days Past Due	6,101,000				6,025,000
90+ Days Past Due	2,845,000				11,126,000
Accruing [Member] | Credit Card And Other Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	328,073,000				293,700,000
30-89 Days Past Due	2,571,000				2,153,000
90+ Days Past Due	1,752,000				1,573,000
Total Accruing	332,396,000				297,426,000
Accruing [Member] | General C I [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	6,629,412,000				6,493,628,000
30-89 Days Past Due	19,049,000				13,177,000
90+ Days Past Due	452,000				428,000
Accruing [Member] | Loans To Mortgage Companies [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	709,339,000				1,129,728,000
30-89 Days Past Due	72,000				0
90+ Days Past Due	0				0
Accruing [Member] | TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	335,543,000	[3]			341,060,000	[4]
30-89 Days Past Due	0	[3]			0	[4]
90+ Days Past Due	0	[3]			0	[4]
Accruing [Member] | Income C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,049,843,000				1,031,037,000
30-89 Days Past Due	10,955,000				4,679,000
90+ Days Past Due	0				0
Accruing [Member] | Residential C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	37,516,000				41,576,000
30-89 Days Past Due	282,000				0
90+ Days Past Due	0				0
Accruing [Member] | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	2,624,763,000				3,022,483,000
30-89 Days Past Due	23,734,000				28,914,000
90+ Days Past Due	12,459,000				18,135,000
Accruing [Member] | R E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	2,447,448,000				2,432,315,000
30-89 Days Past Due	10,812,000				11,977,000
90+ Days Past Due	6,074,000				8,456,000
Accruing [Member] | Credit Card Class [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	180,011,000				178,310,000
30-89 Days Past Due	1,810,000				1,430,000
90+ Days Past Due	1,622,000				1,483,000
Total Accruing	183,443,000				181,223,000
Accruing [Member] | Other Consumer Loans Class [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	148,062,000				115,390,000
30-89 Days Past Due	761,000				723,000
90+ Days Past Due	130,000				90,000
Total Accruing	148,953,000				116,203,000
Accruing [Member] | C I Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	5,291,000
30-89 Days Past Due	0
90+ Days Past Due	1,470,000
Accruing [Member] | C R E Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	31,515,000
30-89 Days Past Due	5,830,000
90+ Days Past Due	1,543,000
Accruing [Member] | R E Installment Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	703,000
30-89 Days Past Due	0
90+ Days Past Due	0
Non Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	137,896,000				91,812,000
30-89 Days Past Due	14,600,000				16,740,000
90+ Days Past Due	88,423,000				147,448,000
Non Accruing [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	16,332,000				22,439,000
30-89 Days Past Due	3,341,000				9,694,000
90+ Days Past Due	32,694,000				81,032,000
Non Accruing [Member] | Consumer Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	102,430,000				47,764,000
30-89 Days Past Due	8,881,000				4,075,000
90+ Days Past Due	20,710,000				16,061,000
Non Accruing [Member] | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,814,000				7,026,000
30-89 Days Past Due	330,000				1,705,000
90+ Days Past Due	12,790,000				29,856,000
Non Accruing [Member] | Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	15,924,000				12,866,000
30-89 Days Past Due	2,048,000				1,266,000
90+ Days Past Due	22,229,000				20,499,000
Non Accruing [Member] | Credit Card And Other Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,396,000				1,717,000
30-89 Days Past Due	0				0
90+ Days Past Due	0				0
Total Non-Accruing	1,396,000				1,717,000
Non Accruing [Member] | General C I [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	16,332,000				22,439,000
30-89 Days Past Due	3,341,000				9,694,000
90+ Days Past Due	19,438,000				34,248,000
Non Accruing [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	141,000				351,000
Non Accruing [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	13,115,000	[3]			46,433,000	[4]
Non Accruing [Member] | Income C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,814,000				5,643,000
30-89 Days Past Due	330,000				1,705,000
90+ Days Past Due	10,072,000				19,524,000
Non Accruing [Member] | Residential C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0				1,383,000
30-89 Days Past Due	0				0
90+ Days Past Due	2,718,000				10,332,000
Non Accruing [Member] | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	67,361,000				28,072,000
30-89 Days Past Due	5,395,000				1,390,000
90+ Days Past Due	14,105,000				9,580,000
Non Accruing [Member] | R E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	35,069,000				19,692,000
30-89 Days Past Due	3,486,000				2,685,000
90+ Days Past Due	6,605,000				6,481,000
Non Accruing [Member] | Credit Card Class [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] | Other Consumer Loans Class [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,396,000				1,717,000
30-89 Days Past Due	0				0
90+ Days Past Due	0				0
Total Non-Accruing	1,396,000				1,717,000
Non Accruing [Member] | C I Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0
30-89 Days Past Due	0
90+ Days Past Due	0
Non Accruing [Member] | C R E Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0
30-89 Days Past Due	0
90+ Days Past Due	0
Non Accruing [Member] | R E Installment Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0
30-89 Days Past Due	0
90+ Days Past Due	$ 0

[1] Balances as of March 31, 2014 and 2013, and December 31, 2013 include $86.7 million, $386.4 million, and $333.8 million of restricted and secured real estate loans, respectively. See Note 14 - Variable Interest Entities for additional information.

[2] Balances as of March 31, 2013, and December 31, 2013 include $13.0 million and $11.2 million of restricted and secured real estate loans, respectively. See Note 14 - Variable Interest Entities for additional information.

[3] Total TRUPs includes LOCOM valuation allowance of $26.6 million.

[4] Total TRUPs includes LOCOM valuation allowance of $30.9 million.