Loans (Accruing And Non-Accruing Loans By Class) (Details) (USD $)	Jun. 30, 2014		Dec. 31, 2013		Jun. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 15,795,709,000		$ 15,389,074,000		$ 16,197,952,000	[1]
Commercial Financial And Industrial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	8,354,487,000				8,246,914,000
Total Non-Accruing	48,349,000				121,153,000
Loans, net of unearned income	8,402,836,000		7,923,576,000		8,368,067,000	[2]
Consumer Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	5,088,008,000				5,429,906,000
Total Non-Accruing	130,922,000				119,534,000
Loans, net of unearned income	5,218,930,000	[3]	5,333,371,000	[3]	5,549,440,000	[3]
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	1,217,533,000				1,184,824,000
Total Non-Accruing	13,980,000				33,382,000
Loans, net of unearned income	1,231,513,000		1,133,279,000		1,218,206,000
Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	556,978,000				707,799,000
Total Non-Accruing	37,023,000				38,355,000
Loans, net of unearned income	594,001,000		662,242,000	[4]	746,154,000	[4]
Credit Card And Other Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	347,087,000				314,375,000
Total Non-Accruing	1,342,000				1,710,000
Loans, net of unearned income	348,429,000		336,606,000		316,085,000
General C I [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	6,911,291,000				6,516,444,000
Total Non-Accruing	44,696,000				74,377,000
Loans, net of unearned income	6,955,987,000				6,590,821,000
Loans To Mortgage Companies [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	1,101,149,000				1,386,679,000
Total Non-Accruing	133,000				343,000
Loans, net of unearned income	1,101,282,000				1,387,022,000
TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	335,267,000	[5]			336,043,000	[6]
Total Non-Accruing	3,520,000	[5]			46,433,000	[6]
Loans, net of unearned income	338,787,000	[5]			382,476,000	[6]
LOCOM valuation allowance	26,200,000				29,900,000
Income C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	1,142,796,000				1,110,426,000
Total Non-Accruing	11,531,000				23,275,000
Loans, net of unearned income	1,154,327,000				1,133,701,000
Residential C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	39,429,000				33,918,000
Total Non-Accruing	2,449,000				10,107,000
Loans, net of unearned income	41,878,000				44,025,000
Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	2,577,619,000				2,936,467,000
Total Non-Accruing	88,471,000				79,413,000
Loans, net of unearned income	2,666,090,000				3,015,880,000
R E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	2,509,614,000				2,492,542,000
Total Non-Accruing	42,451,000				40,121,000
Loans, net of unearned income	2,552,065,000				2,532,663,000
Credit Card Class [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	187,588,000				187,378,000
Total Non-Accruing	0				0
Loans, net of unearned income	187,588,000				187,378,000
Other Consumer Loans Class [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	159,487,000				126,979,000
Total Non-Accruing	1,342,000				1,710,000
Loans, net of unearned income	160,829,000				128,689,000
C I Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	6,780,000				7,748,000
Total Non-Accruing	0				0
Loans, net of unearned income	6,780,000				7,748,000
C R E Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	35,308,000				40,480,000
Total Non-Accruing	0				0
Loans, net of unearned income	35,308,000				40,480,000
R E Installment Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	775,000				897,000
Total Non-Accruing	0				0
Loans, net of unearned income	775,000				897,000
Other Purchased Credit-Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing	12,000				18,000
Total Non-Accruing	0				0
Loans, net of unearned income	12,000				18,000
Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	15,471,259,000				15,783,690,000
30-89 Days Past Due	61,656,000				69,081,000
90+ Days Past Due	31,178,000				31,047,000
Total Accruing	15,564,093,000				15,883,818,000
Accruing [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	8,338,740,000				8,236,369,000
30-89 Days Past Due	13,811,000				9,812,000
90+ Days Past Due	1,936,000				733,000
Accruing [Member] | Consumer Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	5,039,406,000				5,368,746,000
30-89 Days Past Due	31,036,000				39,152,000
90+ Days Past Due	17,566,000				22,008,000
Accruing [Member] | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,204,008,000				1,178,301,000
30-89 Days Past Due	8,303,000				6,060,000
90+ Days Past Due	5,222,000				463,000
Accruing [Member] | Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	546,846,000				689,059,000
30-89 Days Past Due	5,559,000				12,211,000
90+ Days Past Due	4,573,000				6,529,000
Accruing [Member] | Credit Card And Other Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	342,259,000				311,215,000
30-89 Days Past Due	2,947,000				1,846,000
90+ Days Past Due	1,881,000				1,314,000
Accruing [Member] | General C I [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	6,900,880,000				6,506,132,000
30-89 Days Past Due	9,707,000				9,662,000
90+ Days Past Due	704,000				650,000
Accruing [Member] | Loans To Mortgage Companies [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,097,367,000				1,386,679,000
30-89 Days Past Due	3,782,000				0
90+ Days Past Due	0				0
Accruing [Member] | TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	335,267,000	[5]			336,043,000	[6]
30-89 Days Past Due	0	[5]			0	[6]
90+ Days Past Due	0	[5]			0	[6]
Accruing [Member] | Income C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,134,752,000				1,105,352,000
30-89 Days Past Due	8,044,000				4,611,000
90+ Days Past Due	0				463,000
Accruing [Member] | Residential C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	39,429,000				33,715,000
30-89 Days Past Due	0				203,000
90+ Days Past Due	0				0
Accruing [Member] | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	2,548,170,000				2,896,298,000
30-89 Days Past Due	19,772,000				24,339,000
90+ Days Past Due	9,677,000				15,830,000
Accruing [Member] | R E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	2,490,461,000				2,471,693,000
30-89 Days Past Due	11,264,000				14,671,000
90+ Days Past Due	7,889,000				6,178,000
Accruing [Member] | Credit Card Class [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	184,014,000				184,687,000
30-89 Days Past Due	2,010,000				1,475,000
90+ Days Past Due	1,564,000				1,216,000
Accruing [Member] | Other Consumer Loans Class [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	158,233,000				126,511,000
30-89 Days Past Due	937,000				370,000
90+ Days Past Due	317,000				98,000
Accruing [Member] | C I Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	5,226,000				7,515,000
30-89 Days Past Due	322,000				150,000
90+ Days Past Due	1,232,000				83,000
Accruing [Member] | C R E Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	29,827,000				39,234,000
30-89 Days Past Due	259,000				1,246,000
90+ Days Past Due	5,222,000				0
Accruing [Member] | R E Installment Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	775,000				755,000
30-89 Days Past Due	0				142,000
90+ Days Past Due	0				0
Accruing [Member] | Other Purchased Credit-Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	12,000				17,000
30-89 Days Past Due	0				1,000
90+ Days Past Due	0				0
Non Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	136,142,000				147,429,000
30-89 Days Past Due	16,283,000				18,734,000
90+ Days Past Due	79,191,000				147,971,000
Total Non-Accruing	231,616,000				314,134,000
Non Accruing [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	13,105,000				33,855,000
30-89 Days Past Due	3,850,000				8,398,000
90+ Days Past Due	31,394,000				78,900,000
Non Accruing [Member] | Consumer Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	104,534,000				91,557,000
30-89 Days Past Due	8,890,000				8,910,000
90+ Days Past Due	17,498,000				19,067,000
Non Accruing [Member] | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,568,000				5,151,000
30-89 Days Past Due	133,000				0
90+ Days Past Due	12,279,000				28,231,000
Non Accruing [Member] | Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	16,935,000				15,161,000
30-89 Days Past Due	3,410,000				1,421,000
90+ Days Past Due	16,678,000				21,773,000
Non Accruing [Member] | Credit Card And Other Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0				1,705,000
30-89 Days Past Due	0				5,000
90+ Days Past Due	1,342,000				0
Non Accruing [Member] | General C I [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	13,105,000				33,855,000
30-89 Days Past Due	3,850,000				8,398,000
90+ Days Past Due	27,741,000				32,124,000
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	133,000				343,000
Non Accruing [Member] | TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0	[5]			0	[6]
30-89 Days Past Due	0	[5]			0	[6]
90+ Days Past Due	3,520,000	[5]			46,433,000	[6]
Non Accruing [Member] | Income C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	271,000				4,403,000
30-89 Days Past Due	133,000				0
90+ Days Past Due	11,127,000				18,872,000
Non Accruing [Member] | Residential C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,297,000				748,000
30-89 Days Past Due	0				0
90+ Days Past Due	1,152,000				9,359,000
Non Accruing [Member] | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	71,653,000				62,663,000
30-89 Days Past Due	5,888,000				5,549,000
90+ Days Past Due	10,930,000				11,201,000
Non Accruing [Member] | R E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	32,881,000				28,894,000
30-89 Days Past Due	3,002,000				3,361,000
90+ Days Past Due	6,568,000				7,866,000
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
Non Accruing [Member] | Other Consumer Loans Class [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	0				1,705,000
30-89 Days Past Due	0				5,000
90+ Days Past Due	1,342,000				0
Non Accruing [Member] | C I Purchase Credit Impaired Loans [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
Non Accruing [Member] | C R E Purchase Credit Impaired Loans [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
Non Accruing [Member] | R E Installment Purchase Credit Impaired Loans [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
Non Accruing [Member] | Other Purchased Credit-Impaired Loans [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

[1] June 30, 2013 balance has been re-presented due to purchase accounting adjustments made in third quarter 2013.

[2] Balance as of June 30, 2013 has been re-presented due to purchase accounting adjustments made in third quarter 2013.

[3] Balances as of June 30, 2014 and 2013, and December 31, 2013 include $84.4 million, $367.0 million, and $333.8 million of restricted and secured real estate loans, respectively. See Note 14 - Variable Interest Entities for additional information.

[4] Balances as of June 30, 2013, and December 31, 2013 include $12.4 million and $11.2 million of restricted and secured real estate loans, respectively. See Note 14 - Variable Interest Entities for additional information.

[5] Total TRUPS includes LOCOM valuation allowance of $26.2 million.

[6] Total TRUPS includes LOCOM valuation allowance of $29.9 million.