Fair Value Of Assets And Liabilities (Summary Of Book Value And Estimated Fair Value Of Financial Instruments) (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013	Sep. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	$ 15,573,376,000		$ 15,135,265,000	$ 15,152,846,000
Iinterest-bearing cash	275,485,000		730,297,000	184,179,000
Federal funds sold	55,242,000		66,079,000	52,830,000
Securities purchased under agreements to resell	561,802,000		412,614,000	576,355,000
Trading securities	1,338,022,000		801,718,000	1,343,134,000
Loans held-for-sale (Note 17)	151,915,000		370,152,000	371,640,000
Securities available-for-sale	3,534,671,000	[1]	3,398,457,000	3,186,943,000	[2]
Securities held-to-maturity	4,286,000		0	0
Derivative assets	137,742,000		181,866,000	215,116,000
Total other assets	162,643,000			238,309,000
Cash and due from banks	292,687,000		349,216,000	395,631,000
Capital markets receivables	197,507,000		45,255,000	83,154,000
Total assets (Restricted - $.1 billion on September 30, 2014; September 30, 2013; and December 31, 2013)	23,986,787,000		23,789,833,000	23,858,753,000
Total deposits	16,144,771,000		16,734,956,000	16,283,909,000
Trading liabilities	532,234,000		368,348,000	585,969,000
Federal funds purchased	928,159,000		1,042,633,000	1,062,901,000
Securities sold under agreements to repurchase	479,384,000		442,789,000	427,232,000
Other short-term borrowings	790,080,000		181,146,000	303,686,000
Total term borrowings	1,491,138,000		1,739,859,000	1,771,288,000
Derivative liabilities	123,442,000		154,280,000	165,918,000
Capital markets payables	329,960,000		21,173,000	53,784,000
Total liabilities (Restricted - $.1 billion on September 30, 2014; September 30, 2013; and December 31, 2013)	21,364,846,000		21,289,082,000	21,425,460,000
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	15,573,376,000			15,152,846,000
Iinterest-bearing cash	275,485,000			184,179,000
Federal funds sold	55,242,000			52,830,000
Securities purchased under agreements to resell	561,802,000			576,355,000
Total short-term financial assets	892,529,000			813,364,000
Trading securities	1,338,022,000	[3]		1,343,134,000	[3]
Loans held-for-sale (Note 17)	151,915,000	[3]		371,640,000	[3]
Securities available-for-sale	3,534,671,000	[3],[4]		3,186,943,000	[3],[5]
Securities held-to-maturity	4,286,000
Derivative assets	137,742,000	[3]		215,116,000	[3]
Tax credit investments	65,393,000			69,115,000
Deferred compensation assets	24,901,000			23,193,000
Total other assets	90,294,000			92,308,000
Cash and due from banks	292,687,000			395,631,000
Capital markets receivables	197,507,000			83,154,000
Accrued interest receivable	71,755,000			71,889,000
Total nonearning assets	561,949,000			550,674,000
Total assets (Restricted - $.1 billion on September 30, 2014; September 30, 2013; and December 31, 2013)	22,284,784,000			21,726,025,000
Defined maturity	1,214,637,000			1,573,405,000
Undefined maturity	14,930,134,000			14,710,504,000
Total deposits	16,144,771,000			16,283,909,000
Trading liabilities	532,234,000	[3]		585,969,000	[3]
Federal funds purchased	928,159,000			1,062,901,000
Securities sold under agreements to repurchase	479,384,000			427,232,000
Other short-term borrowings	790,080,000			303,686,000
Total short-term financial liabilities	2,197,623,000			1,793,819,000
Real estate investment trust-preferred	45,879,000			45,811,000
Term borrowings - new market tax credit investment	18,000,000			18,000,000
Borrowings secured by residential real estate	70,720,000			329,574,000
Other long term borrowings	1,356,539,000			1,377,903,000
Total term borrowings	1,491,138,000			1,771,288,000
Derivative liabilities	123,442,000	[3]		165,918,000	[3]
Capital markets payables	329,960,000			53,784,000
Accrued interest payable	30,984,000			33,924,000
Total other noninterest-bearing liabilities	360,944,000			87,708,000
Total liabilities (Restricted - $.1 billion on September 30, 2014; September 30, 2013; and December 31, 2013)	20,850,152,000			20,688,611,000
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	8,407,459,000			7,655,562,000
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	1,262,944,000			1,162,718,000
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	5,012,593,000			5,337,221,000
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	552,568,000			672,138,000
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	337,812,000			325,207,000
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	15,301,117,000			14,394,038,000
Iinterest-bearing cash	275,485,000			184,179,000
Federal funds sold	55,242,000			52,830,000
Securities purchased under agreements to resell	561,802,000			576,355,000
Total short-term financial assets	892,529,000			813,364,000
Trading securities	1,338,022,000	[3]		1,343,134,000	[3]
Loans held-for-sale (Note 17)	151,915,000	[3]		371,640,000	[3]
Securities available-for-sale	3,534,671,000	[3],[4]		3,186,943,000	[3],[5]
Securities held-to-maturity	5,380,000
Derivative assets	137,742,000	[3]		215,116,000	[3]
Tax credit investments	65,393,000			69,115,000
Deferred compensation assets	24,901,000			23,193,000
Total other assets	90,294,000			92,308,000
Cash and due from banks	292,687,000			395,631,000
Capital markets receivables	197,507,000			83,154,000
Accrued interest receivable	71,755,000			71,889,000
Total nonearning assets	561,949,000			550,674,000
Total assets (Restricted - $.1 billion on September 30, 2014; September 30, 2013; and December 31, 2013)	22,013,619,000			20,967,217,000
Defined maturity	1,220,109,000			1,591,314,000
Undefined maturity	14,930,134,000			14,710,504,000
Total deposits	16,150,243,000			16,301,818,000
Trading liabilities	532,234,000	[3]		585,969,000	[3]
Federal funds purchased	928,159,000			1,062,901,000
Securities sold under agreements to repurchase	479,384,000			427,232,000
Other short-term borrowings	790,080,000			303,686,000
Total short-term financial liabilities	2,197,623,000			1,793,819,000
Real estate investment trust-preferred	49,350,000			47,000,000
Term borrowings - new market tax credit investment	17,880,000			18,025,000
Borrowings secured by residential real estate	61,031,000			194,905,000
Other long term borrowings	1,346,281,000			1,365,535,000
Total term borrowings	1,474,542,000			1,625,465,000
Derivative liabilities	123,442,000	[3]		165,918,000	[3]
Capital markets payables	329,960,000			53,784,000
Accrued interest payable	30,984,000			33,924,000
Total other noninterest-bearing liabilities	360,944,000			87,708,000
Total liabilities (Restricted - $.1 billion on September 30, 2014; September 30, 2013; and December 31, 2013)	20,839,028,000			20,560,697,000
Loan commitments	2,368,000			1,722,000
Standby and other commitments	4,879,000			4,819,000
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	8,348,656,000			7,502,354,000
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	1,243,925,000			1,115,304,000
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	4,875,939,000			4,859,306,000
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	492,930,000			589,999,000
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	339,667,000			327,075,000
Contractual Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan commitments	7,411,045,000			7,550,487,000
Standby and other commitments	320,286,000			302,160,000
Fair Value Inputs Level1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	26,080,000			20,267,000
Total other assets	28,082,000			40,070,000
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
Iinterest-bearing cash	275,485,000			184,179,000
Federal funds sold	0			0
Securities purchased under agreements to resell	0			0
Total short-term financial assets	275,485,000			184,179,000
Trading securities	0	[3]		0	[3]
Loans held-for-sale (Note 17)	0	[3]		0	[3]
Securities available-for-sale	26,080,000	[3]		20,267,000	[3]
Securities held-to-maturity	0
Derivative assets	3,181,000	[3]		16,877,000	[3]
Tax credit investments	0			0
Deferred compensation assets	24,901,000			23,193,000
Total other assets	24,901,000			23,193,000
Cash and due from banks	292,687,000			395,631,000
Capital markets receivables	0			0
Accrued interest receivable	0			0
Total nonearning assets	292,687,000			395,631,000
Total assets (Restricted - $.1 billion on September 30, 2014; September 30, 2013; and December 31, 2013)	622,334,000			640,147,000
Defined maturity	0			0
Undefined maturity	0			0
Total deposits	0			0
Trading liabilities	0	[3]		0	[3]
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
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 term borrowings	0			0
Derivative liabilities	2,895,000	[3]		9,770,000	[3]
Capital markets payables	0			0
Accrued interest payable	0			0
Total other noninterest-bearing liabilities	0			0
Total liabilities (Restricted - $.1 billion on September 30, 2014; September 30, 2013; and December 31, 2013)	2,895,000			9,770,000
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]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	3,349,355,000			2,954,224,000
Total other assets	134,561,000			198,239,000
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
Iinterest-bearing cash	0			0
Federal funds sold	55,242,000			52,830,000
Securities purchased under agreements to resell	561,802,000			576,355,000
Total short-term financial assets	617,044,000			629,185,000
Trading securities	1,331,899,000	[3]		1,327,415,000	[3]
Loans held-for-sale (Note 17)	7,552,000	[3]		0	[3]
Securities available-for-sale	3,349,355,000	[3]		2,954,224,000	[3]
Securities held-to-maturity	0
Derivative assets	134,561,000	[3]		198,239,000	[3]
Tax credit investments	0			0
Deferred compensation assets	0			0
Total other assets	0			0
Cash and due from banks	0			0
Capital markets receivables	197,507,000			83,154,000
Accrued interest receivable	71,755,000			71,889,000
Total nonearning assets	269,262,000			155,043,000
Total assets (Restricted - $.1 billion on September 30, 2014; September 30, 2013; and December 31, 2013)	5,709,673,000			5,264,106,000
Defined maturity	1,220,109,000			1,591,314,000
Undefined maturity	14,930,134,000			14,710,504,000
Total deposits	16,150,243,000			16,301,818,000
Trading liabilities	532,234,000	[3]		585,969,000	[3]
Federal funds purchased	928,159,000			1,062,901,000
Securities sold under agreements to repurchase	479,384,000			427,232,000
Other short-term borrowings	790,080,000			291,971,000
Total short-term financial liabilities	2,197,623,000			1,782,104,000
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	1,346,281,000			1,365,535,000
Total term borrowings	1,346,281,000			1,365,535,000
Derivative liabilities	112,907,000	[3]		153,403,000	[3]
Capital markets payables	329,960,000			53,784,000
Accrued interest payable	30,984,000			33,924,000
Total other noninterest-bearing liabilities	360,944,000			87,708,000
Total liabilities (Restricted - $.1 billion on September 30, 2014; September 30, 2013; and December 31, 2013)	20,700,232,000			20,276,537,000
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]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	3,429,000			8,328,000
Total other assets	0			0
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	15,301,117,000			14,394,038,000
Iinterest-bearing cash	0			0
Federal funds sold	0			0
Securities purchased under agreements to resell	0			0
Total short-term financial assets	0			0
Trading securities	6,123,000	[3]		15,719,000	[3]
Loans held-for-sale (Note 17)	144,363,000	[3]		371,640,000	[3]
Securities available-for-sale	159,236,000	[3],[4]		212,452,000	[3],[5]
Securities held-to-maturity	5,380,000
Derivative assets	0	[3]		0	[3]
Tax credit investments	65,393,000			69,115,000
Deferred compensation assets	0			0
Total other assets	65,393,000			69,115,000
Cash and due from banks	0			0
Capital markets receivables	0			0
Accrued interest receivable	0			0
Total nonearning assets	0			0
Total assets (Restricted - $.1 billion on September 30, 2014; September 30, 2013; and December 31, 2013)	15,681,612,000			15,062,964,000
Defined maturity	0			0
Undefined maturity	0			0
Total deposits	0			0
Trading liabilities	0	[3]		0	[3]
Federal funds purchased	0			0
Securities sold under agreements to repurchase	0			0
Other short-term borrowings	0			11,715,000
Total short-term financial liabilities	0			11,715,000
Real estate investment trust-preferred	49,350,000			47,000,000
Term borrowings - new market tax credit investment	17,880,000			18,025,000
Borrowings secured by residential real estate	61,031,000			194,905,000
Other long term borrowings	0			0
Total term borrowings	128,261,000			259,930,000
Derivative liabilities	7,640,000	[3]		2,745,000	[3]
Capital markets payables	0			0
Accrued interest payable	0			0
Total other noninterest-bearing liabilities	0			0
Total liabilities (Restricted - $.1 billion on September 30, 2014; September 30, 2013; and December 31, 2013)	135,901,000			274,390,000
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	8,348,656,000			7,502,354,000
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	1,243,925,000			1,115,304,000
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	4,875,939,000			4,859,306,000
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	492,930,000			589,999,000
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	339,667,000			327,075,000
FHLB-Cincinnati Stock [Member] | Fair Value Inputs Level3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	87,900,000			128,000,000
FRB Stock [Member] | Fair Value Inputs Level3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	$ 66,000,000			$ 66,000,000

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

[2] Includes $2.9 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.

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

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

[5] Level 3 includes restricted investments in FHLB-Cincinnati stock of $128.0 million and FRB stock of $66.0 million.