Loans (Accruing And Non-Accruing Loans By Class) (Details) - USD ($)		Jun. 30, 2015		Dec. 31, 2014	Jun. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income		$ 16,936,772,000	[1]	$ 16,230,166,000	$ 15,795,709,000
Commercial Financial And Industrial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		9,788,990,000			8,354,487,000
Total Non-Accruing		43,573,000			48,349,000
Loans, net of unearned income		9,832,563,000		9,007,286,000	8,402,836,000
Consumer Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		4,755,746,000			5,088,008,000
Total Non-Accruing		114,525,000			130,922,000
Loans, net of unearned income	[2]	4,870,271,000		5,048,071,000	5,218,930,000
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		1,388,969,000			1,217,533,000
Total Non-Accruing		11,746,000			13,980,000
Loans, net of unearned income		1,400,715,000		1,277,717,000	1,231,513,000
Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		455,206,000			556,978,000
Total Non-Accruing		32,473,000			37,023,000
Loans, net of unearned income		487,679,000		538,961,000	594,001,000
Credit Card And Other Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		344,795,000			347,087,000
Total Non-Accruing		749,000			1,342,000
Loans, net of unearned income		345,544,000		$ 358,131,000	348,429,000
General C I [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		7,679,015,000			6,911,291,000
Total Non-Accruing		30,669,000			44,696,000
Loans, net of unearned income		7,709,684,000			6,955,987,000
Loans To Mortgage Companies [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		1,799,546,000			1,101,149,000
Total Non-Accruing		119,000			133,000
Loans, net of unearned income		1,799,665,000			1,101,282,000
TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		305,382,000	[3]		335,267,000	[4]
Total Non-Accruing		12,785,000	[3]		3,520,000	[4]
Loans, net of unearned income		318,167,000	[3]		338,787,000	[4]
LOCOM valuation allowance		26,200,000			26,200,000
Income C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		1,347,356,000			1,142,796,000
Total Non-Accruing		11,746,000			11,531,000
Loans, net of unearned income		1,359,102,000			1,154,327,000
Residential C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		19,237,000			39,429,000
Total Non-Accruing		0			2,449,000
Loans, net of unearned income		19,237,000			41,878,000
Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		2,182,369,000			2,577,619,000
Total Non-Accruing		80,131,000			88,471,000
Loans, net of unearned income		2,262,500,000			2,666,090,000
R E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		2,570,957,000			2,509,614,000
Total Non-Accruing		34,394,000			42,451,000
Loans, net of unearned income		2,605,351,000			2,552,065,000
Credit Card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		185,207,000			187,588,000
Total Non-Accruing		0			0
Loans, net of unearned income		185,207,000			187,588,000
Other Consumer Loans Class
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		159,580,000			159,487,000
Total Non-Accruing		749,000			1,342,000
Loans, net of unearned income		160,329,000			160,829,000
C&I Purchase Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		5,047,000			6,780,000
Total Non-Accruing		0			0
Loans, net of unearned income		5,047,000			6,780,000
CRE Purchase Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		22,376,000			35,308,000
Total Non-Accruing		0			0
Loans, net of unearned income		22,376,000			35,308,000
RE Installment Purchase Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		2,420,000			775,000
Total Non-Accruing		0			0
Loans, net of unearned income		2,420,000			775,000
Other Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Accruing		8,000			12,000
Total Non-Accruing		0			0
Loans, net of unearned income		8,000			12,000
Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		16,662,261,000			15,471,259,000
30-89 Days Past Due		48,924,000			61,656,000
90+ Days Past Due		22,521,000			31,178,000
Total Accruing		16,733,706,000			15,564,093,000
Accruing | Commercial Financial And Industrial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		9,781,398,000			8,338,740,000
30-89 Days Past Due		6,700,000			13,811,000
90+ Days Past Due		892,000			1,936,000
Accruing | Consumer Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		4,709,869,000			5,039,406,000
30-89 Days Past Due		31,416,000			31,036,000
90+ Days Past Due		14,461,000			17,566,000
Accruing | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		1,385,792,000			1,204,008,000
30-89 Days Past Due		3,039,000			8,303,000
90+ Days Past Due		138,000			5,222,000
Accruing | Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		444,187,000			546,846,000
30-89 Days Past Due		5,450,000			5,559,000
90+ Days Past Due		5,569,000			4,573,000
Accruing | Credit Card And Other Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		341,015,000			342,259,000
30-89 Days Past Due		2,319,000			2,947,000
90+ Days Past Due		1,461,000			1,881,000
Accruing | General C I [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		7,673,986,000			6,900,880,000
30-89 Days Past Due		4,830,000			9,707,000
90+ Days Past Due		199,000			704,000
Accruing | Loans To Mortgage Companies [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		1,797,877,000			1,097,367,000
30-89 Days Past Due		1,669,000			3,782,000
90+ Days Past Due		0			0
Accruing | TRUPs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		305,382,000	[3]		335,267,000	[4]
30-89 Days Past Due		0	[3]		0	[4]
90+ Days Past Due		0	[3]		0	[4]
Accruing | Income C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		1,344,440,000			1,134,752,000
30-89 Days Past Due		2,916,000			8,044,000
90+ Days Past Due		0			0
Accruing | Residential C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		19,114,000			39,429,000
30-89 Days Past Due		123,000			0
90+ Days Past Due		0			0
Accruing | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		2,150,344,000			2,548,170,000
30-89 Days Past Due		22,240,000			19,772,000
90+ Days Past Due		9,785,000			9,677,000
Accruing | R E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		2,557,513,000			2,490,461,000
30-89 Days Past Due		9,172,000			11,264,000
90+ Days Past Due		4,272,000			7,889,000
Accruing | Credit Card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		182,477,000			184,014,000
30-89 Days Past Due		1,446,000			2,010,000
90+ Days Past Due		1,284,000			1,564,000
Accruing | Other Consumer Loans Class
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		158,530,000			158,233,000
30-89 Days Past Due		873,000			937,000
90+ Days Past Due		177,000			317,000
Accruing | C&I Purchase Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		4,153,000			5,226,000
30-89 Days Past Due		201,000			322,000
90+ Days Past Due		693,000			1,232,000
Accruing | CRE Purchase Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		22,238,000			29,827,000
30-89 Days Past Due		0			259,000
90+ Days Past Due		138,000			5,222,000
Accruing | RE Installment Purchase Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		2,012,000			775,000
30-89 Days Past Due		4,000			0
90+ Days Past Due		404,000			0
Accruing | Other Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		8,000			12,000
30-89 Days Past Due		0			0
90+ Days Past Due		0			0
Non-Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		123,200,000			136,142,000
30-89 Days Past Due		13,674,000			16,283,000
90+ Days Past Due		66,192,000			79,191,000
Total Non-Accruing		203,066,000			231,616,000
Non-Accruing | Commercial Financial And Industrial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		13,781,000			13,105,000
30-89 Days Past Due		2,536,000			3,850,000
90+ Days Past Due		27,256,000			31,394,000
Non-Accruing | Consumer Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		92,639,000			104,534,000
30-89 Days Past Due		7,116,000			8,890,000
90+ Days Past Due		14,770,000			17,498,000
Non-Accruing | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		1,285,000			1,568,000
30-89 Days Past Due		2,041,000			133,000
90+ Days Past Due		8,420,000			12,279,000
Non-Accruing | Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		15,495,000			16,935,000
30-89 Days Past Due		1,981,000			3,410,000
90+ Days Past Due		14,997,000			16,678,000
Non-Accruing | Credit Card And Other Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		0			0
30-89 Days Past Due		0			0
90+ Days Past Due		749,000			1,342,000
Non-Accruing | General C I [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		13,781,000			13,105,000
30-89 Days Past Due		2,536,000			3,850,000
90+ Days Past Due		14,352,000			27,741,000
Non-Accruing | 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		119,000			133,000
Non-Accruing | 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		12,785,000	[3]		3,520,000	[4]
Non-Accruing | Income C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		1,285,000			271,000
30-89 Days Past Due		2,041,000			133,000
90+ Days Past Due		8,420,000			11,127,000
Non-Accruing | Residential C R E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		0			1,297,000
30-89 Days Past Due		0			0
90+ Days Past Due		0			1,152,000
Non-Accruing | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		65,345,000			71,653,000
30-89 Days Past Due		5,243,000			5,888,000
90+ Days Past Due		9,543,000			10,930,000
Non-Accruing | R E Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		27,294,000			32,881,000
30-89 Days Past Due		1,873,000			3,002,000
90+ Days Past Due		5,227,000			6,568,000
Non-Accruing | Credit Card
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 | Other Consumer Loans Class
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current		0			0
30-89 Days Past Due		0			0
90+ Days Past Due		749,000			1,342,000
Non-Accruing | C&I Purchase Credit Impaired Loans
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 | CRE Purchase Credit Impaired Loans
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 | RE Installment Purchase Credit Impaired Loans
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 | Other Purchased Credit Impaired Loans
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, 2015 includes $28.3 million of held-to-maturity consumer mortgage loans secured by residential real estate in process of foreclosure.

[2] (a) Balances as of June 30, 2015 and 2014, and December 31, 2014 include $ 66 .4 million, $ 84.4 million, and $ 76.8 million of restricted real estate loans, respectively. See Note 13 - Variable Interest Entities for additional information.

[3] Total TRUPS i nclude s LOCOM valuation allowance of $26.2 million.

[4] Total TRUPS i nclu des LOCOM valuation allowance of $ 26.2 million.