Fair Value Of Assets And Liabilities (Summary Of Book Value And Estimated Fair Value Of Financial Instruments) (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014	Mar. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	$ 16,503,795,000		$ 15,997,718,000	$ 14,872,215,000
Short Term Financial Assets:
Total interest-bearing cash	438,633,000		1,621,967,000	685,540,000
Total federal funds sold	43,052,000		63,080,000	16,555,000
Securities purchased under agreements to resell	831,541,000		659,154,000	605,276,000
Trading securities	1,532,463,000		1,194,391,000	1,194,749,000
Loans held-for-sale	133,958,000	[1]	141,285,000	361,359,000
Securities available for sale	3,672,331,000	[2]	3,556,613,000	3,571,179,000	[3]
Securities held-to-maturity (Note 3)	4,299,000		4,292,000	4,274,000
Derivative assets	148,153,000		134,088,000	166,465,000
Other Assets Financial Instruments
Total other assets	176,935,000			194,487,000
Non Earning Assets
Cash and due from banks	282,800,000		349,171,000	450,270,000
Capital markets receivables	190,662,000		42,488,000	51,082,000
Total assets	25,715,888,000		25,668,187,000	23,936,836,000
Deposits:
Total deposits	18,638,554,000		18,068,939,000	16,672,743,000
Trading liabilities	813,141,000		594,314,000	667,257,000
Short Term Financial Liabilities
Total federal funds purchased	703,352,000		1,037,052,000	1,135,665,000
Securities sold under agreements to repurchase	309,297,000		562,214,000	411,795,000
Other Short-term Borrowings	158,745,000		157,218,000	204,023,000
Term Borrowings
Total long term borrowings	1,573,215,000		1,880,105,000	1,507,048,000
Derivative liabilities	133,273,000		119,239,000	137,863,000
Other noninterest-bearing liabilities
Capital markets payables	91,176,000		18,157,000	39,510,000
Total liabilities	23,216,631,000		23,086,597,000	21,404,324,000
Carrying Reported Amount Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	16,503,795,000			14,872,215,000
Short Term Financial Assets:
Total interest-bearing cash	438,633,000			685,540,000
Total federal funds sold	43,052,000			16,555,000
Securities purchased under agreements to resell	831,541,000			605,276,000
Total short-term financial assets	1,313,226,000			1,307,371,000
Trading securities	1,532,463,000	[4]		1,194,749,000	[4]
Loans held-for-sale	133,958,000	[4]		361,359,000	[4]
Securities available for sale	3,672,331,000	[4],[5]		3,571,179,000	[4],[6]
Securities held-to-maturity (Note 3)	4,299,000			4,274,000
Derivative assets	148,153,000	[4]		166,465,000	[4]
Other Assets Financial Instruments
Tax credit investments	80,331,000			85,901,000
Deferred compensation assets	26,440,000			23,335,000
Total other assets	106,771,000			109,236,000
Non Earning Assets
Cash and due from banks	282,800,000			450,270,000
Capital markets receivables	190,662,000			51,082,000
Accrued interest receivable	72,716,000			73,010,000
Total nonearning assets	546,178,000			574,362,000
Total assets	23,961,174,000			22,161,210,000
Deposits:
Defined maturity	1,210,417,000			1,436,657,000
Undefined maturity	17,428,137,000			15,236,086,000
Total deposits	18,638,554,000			16,672,743,000
Trading liabilities	813,141,000	[4]		667,257,000	[4]
Short Term Financial Liabilities
Total federal funds purchased	703,352,000			1,135,665,000
Securities sold under agreements to repurchase	309,297,000			411,795,000
Other Short-term Borrowings	158,745,000			204,023,000
Total short-term financial liabilities	1,171,394,000			1,751,483,000
Term Borrowings
Real estate investment trust-preferred	45,913,000			45,845,000
Term borrowings - new market tax credit investment	18,000,000			18,000,000
Borrowings secured by residential real estate	60,914,000			77,119,000
Other long term borrowings	1,448,388,000			1,366,084,000
Total long term borrowings	1,573,215,000			1,507,048,000
Derivative liabilities	133,273,000	[4]		137,863,000	[4]
Other noninterest-bearing liabilities
Capital markets payables	91,176,000			39,510,000
Accrued interest payable	31,745,000			33,244,000
Total other noninterest-bearing liabilities	122,921,000			72,754,000
Total liabilities	22,452,498,000			20,809,148,000
Carrying Reported Amount Fair Value Disclosure [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	9,570,703,000			7,680,262,000
Carrying Reported Amount Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	1,303,232,000			1,136,895,000
Carrying Reported Amount Fair Value Disclosure [Member] | Consumer Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	4,813,572,000			5,134,606,000
Carrying Reported Amount Fair Value Disclosure [Member] | Permanent Mortgage Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	491,522,000			599,721,000
Carrying Reported Amount Fair Value Disclosure [Member] | Credit Card And Other Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	324,766,000			320,731,000
Estimate Of Fair Value Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	16,234,532,000			14,377,047,000
Short Term Financial Assets:
Total interest-bearing cash	438,633,000			685,540,000
Total federal funds sold	43,052,000			16,555,000
Securities purchased under agreements to resell	831,541,000			605,276,000
Total short-term financial assets	1,313,226,000			1,307,371,000
Trading securities	1,532,463,000	[4]		1,194,749,000	[4]
Loans held-for-sale	133,958,000	[4]		361,359,000	[4]
Securities available for sale	3,672,331,000	[4],[5]		3,571,179,000	[4],[6]
Securities held-to-maturity (Note 3)	5,451,000			5,454,000
Derivative assets	148,153,000	[4]		166,465,000	[4]
Other Assets Financial Instruments
Tax credit investments	62,768,000			73,344,000
Deferred compensation assets	26,440,000			23,335,000
Total other assets	89,208,000			96,679,000
Non Earning Assets
Cash and due from banks	282,800,000			450,270,000
Capital markets receivables	190,662,000			51,082,000
Accrued interest receivable	72,716,000			73,010,000
Total nonearning assets	546,178,000			574,362,000
Total assets	23,675,500,000			21,654,665,000
Deposits:
Defined maturity	1,216,398,000			1,448,362,000
Undefined maturity	17,428,137,000			15,236,086,000
Total deposits	18,644,535,000			16,684,448,000
Trading liabilities	813,141,000	[4]		667,257,000	[4]
Short Term Financial Liabilities
Total federal funds purchased	703,352,000			1,135,665,000
Securities sold under agreements to repurchase	309,297,000			411,795,000
Other Short-term Borrowings	158,745,000			204,023,000
Total short-term financial liabilities	1,171,394,000			1,751,483,000
Term Borrowings
Real estate investment trust-preferred	49,350,000			49,350,000
Term borrowings - new market tax credit investment	18,208,000			17,810,000
Borrowings secured by residential real estate	52,568,000			66,554,000
Other long term borrowings	1,426,924,000			1,362,408,000
Total long term borrowings	1,547,050,000			1,496,122,000
Derivative liabilities	133,273,000	[4]		137,863,000	[4]
Other noninterest-bearing liabilities
Capital markets payables	91,176,000			39,510,000
Accrued interest payable	31,745,000			33,244,000
Total other noninterest-bearing liabilities	122,921,000			72,754,000
Total liabilities	22,432,314,000			20,809,927,000
Loan commitments	2,439,000			1,805,000
Standby and other commitments	5,229,000			5,642,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	9,523,767,000			7,595,334,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	1,285,775,000			1,093,796,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Consumer Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	4,640,351,000			4,824,384,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Permanent Mortgage Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	458,133,000			540,843,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Credit Card And Other Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	326,506,000			322,690,000
Contractual Amount [Member]
Other noninterest-bearing liabilities
Loan commitments	7,073,470,000			7,543,821,000
Standby and other commitments	374,173,000			316,399,000
Fair Value Inputs Level1 [Member]
Short Term Financial Assets:
Securities available for sale	25,870,000			26,482,000
Other Assets Financial Instruments
Total other assets	33,350,000			27,350,000
Fair Value Inputs Level1 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	0			0
Short Term Financial Assets:
Total interest-bearing cash	438,633,000			685,540,000
Total federal funds sold	0			0
Securities purchased under agreements to resell	0			0
Total short-term financial assets	438,633,000			685,540,000
Trading securities	0	[4]		0	[4]
Loans held-for-sale	0	[4]		0	[4]
Securities available for sale	25,870,000	[4]		26,482,000	[4]
Securities held-to-maturity (Note 3)	0			0
Derivative assets	6,910,000	[4]		4,015,000	[4]
Other Assets Financial Instruments
Tax credit investments	0			0
Deferred compensation assets	26,440,000			23,335,000
Total other assets	26,440,000			23,335,000
Non Earning Assets
Cash and due from banks	282,800,000			450,270,000
Capital markets receivables	0			0
Accrued interest receivable	0			0
Total nonearning assets	282,800,000			450,270,000
Total assets	780,653,000			1,189,642,000
Deposits:
Defined maturity	0			0
Undefined maturity	0			0
Total deposits	0			0
Trading liabilities	0	[4]		0	[4]
Short Term Financial Liabilities
Total federal funds purchased	0			0
Securities sold under agreements to repurchase	0			0
Other Short-term Borrowings	0			0
Total short-term financial liabilities	0			0
Term Borrowings
Real estate investment trust-preferred	0			0
Term borrowings - new market tax credit investment	0			0
Borrowings secured by residential real estate	0			0
Other long term borrowings	0			0
Total long term borrowings	0			0
Derivative liabilities	7,828,000	[4]		2,738,000	[4]
Other noninterest-bearing liabilities
Capital markets payables	0			0
Accrued interest payable	0			0
Total other noninterest-bearing liabilities	0			0
Total liabilities	7,828,000			2,738,000
Fair Value Inputs Level1 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	0			0
Fair Value Inputs Level1 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	0			0
Fair Value Inputs Level1 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Consumer Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	0			0
Fair Value Inputs Level1 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Permanent Mortgage Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	0			0
Fair Value Inputs Level1 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Credit Card And Other Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	0			0
Fair Value Inputs Level2 [Member]
Short Term Financial Assets:
Securities available for sale	3,487,502,000			3,377,977,000
Other Assets Financial Instruments
Total other assets	141,243,000			162,450,000
Fair Value Inputs Level2 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	0			0
Short Term Financial Assets:
Total interest-bearing cash	0			0
Total federal funds sold	43,052,000			16,555,000
Securities purchased under agreements to resell	831,541,000			605,276,000
Total short-term financial assets	874,593,000			621,831,000
Trading securities	1,527,137,000	[4]		1,188,156,000	[4]
Loans held-for-sale	3,211,000	[4]		3,494,000	[4]
Securities available for sale	3,487,502,000	[4]		3,377,977,000	[4]
Securities held-to-maturity (Note 3)	0			0
Derivative assets	141,243,000	[4]		162,450,000	[4]
Other Assets Financial Instruments
Tax credit investments	0			0
Deferred compensation assets	0			0
Total other assets	0			0
Non Earning Assets
Cash and due from banks	0			0
Capital markets receivables	190,662,000			51,082,000
Accrued interest receivable	72,716,000			73,010,000
Total nonearning assets	263,378,000			124,092,000
Total assets	6,297,064,000			5,478,000,000
Deposits:
Defined maturity	1,216,398,000			1,448,362,000
Undefined maturity	17,428,137,000			15,236,086,000
Total deposits	18,644,535,000			16,684,448,000
Trading liabilities	813,141,000	[4]		667,257,000	[4]
Short Term Financial Liabilities
Total federal funds purchased	703,352,000			1,135,665,000
Securities sold under agreements to repurchase	309,297,000			411,795,000
Other Short-term Borrowings	158,745,000			204,023,000
Total short-term financial liabilities	1,171,394,000			1,751,483,000
Term Borrowings
Real estate investment trust-preferred	0			0
Term borrowings - new market tax credit investment	0			0
Borrowings secured by residential real estate	0			0
Other long term borrowings	1,426,924,000			1,362,408,000
Total long term borrowings	1,426,924,000			1,362,408,000
Derivative liabilities	120,440,000	[4]		130,180,000	[4]
Other noninterest-bearing liabilities
Capital markets payables	91,176,000			39,510,000
Accrued interest payable	31,745,000			33,244,000
Total other noninterest-bearing liabilities	122,921,000			72,754,000
Total liabilities	22,299,355,000			20,668,530,000
Fair Value Inputs Level2 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	0			0
Fair Value Inputs Level2 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	0			0
Fair Value Inputs Level2 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Consumer Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	0			0
Fair Value Inputs Level2 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Permanent Mortgage Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	0			0
Fair Value Inputs Level2 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Credit Card And Other Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	0			0
Fair Value Inputs Level3 [Member]
Short Term Financial Assets:
Securities available for sale	3,191,000			7,982,000
Other Assets Financial Instruments
Total other assets	2,342,000			4,687,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	16,234,532,000			14,377,047,000
Short Term Financial Assets:
Total interest-bearing cash	0			0
Total federal funds sold	0			0
Securities purchased under agreements to resell	0			0
Total short-term financial assets	0			0
Trading securities	5,326,000	[4]		6,593,000	[4]
Loans held-for-sale	130,747,000	[4]		357,865,000	[4]
Securities available for sale	158,959,000	[4],[5]		166,720,000	[4],[6]
Securities held-to-maturity (Note 3)	5,451,000			5,454,000
Derivative assets	0	[4]		0	[4]
Other Assets Financial Instruments
Tax credit investments	62,768,000			73,344,000
Deferred compensation assets	0			0
Total other assets	62,768,000			73,344,000
Non Earning Assets
Cash and due from banks	0			0
Capital markets receivables	0			0
Accrued interest receivable	0			0
Total nonearning assets	0			0
Total assets	16,597,783,000			14,987,023,000
Deposits:
Defined maturity	0			0
Undefined maturity	0			0
Total deposits	0			0
Trading liabilities	0	[4]		0	[4]
Short Term Financial Liabilities
Total federal funds purchased	0			0
Securities sold under agreements to repurchase	0			0
Other Short-term Borrowings	0			0
Total short-term financial liabilities	0			0
Term Borrowings
Real estate investment trust-preferred	49,350,000			49,350,000
Term borrowings - new market tax credit investment	18,208,000			17,810,000
Borrowings secured by residential real estate	52,568,000			66,554,000
Other long term borrowings	0			0
Total long term borrowings	120,126,000			133,714,000
Derivative liabilities	5,005,000	[4]		4,945,000	[4]
Other noninterest-bearing liabilities
Capital markets payables	0			0
Accrued interest payable	0			0
Total other noninterest-bearing liabilities	0			0
Total liabilities	125,131,000			138,659,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	9,523,767,000			7,595,334,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	1,285,775,000			1,093,796,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Consumer Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	4,640,351,000			4,824,384,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Permanent Mortgage Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	458,133,000			540,843,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Credit Card And Other Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	326,506,000			322,690,000
FHLB-Cincinnati Stock [Member] | Fair Value Inputs Level3 [Member]
Other noninterest-bearing liabilities
Restricted investments	87,900,000			87,900,000
FRB Stock [Member] | Fair Value Inputs Level3 [Member]
Other noninterest-bearing liabilities
Restricted investments	$ 66,000,000			$ 66,000,000

[1] (a) March 31, 2015 includes $23.8 million of held-for-sale consumer mortgage loans secured by residential real estate properties in process of foreclosure.

[2] Includes $3.2billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.

[3] Includes $3.3 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.

[4] Classes are detailed in the recurring and nonrecurring measurement tables.

[5] Level 3 includes restricted investments in FHLB-Cincinnati stock of $87.9million and FRB stock of $66.0million.

[6] Level 3 includes restricted investments in FHLB-Cincinnati stock of $87.9 million and FRB stock of $66.0 million.