Fair Value Of Assets And Liabilities (Summary Of Book Value And Estimated Fair Value Of Financial Instruments) (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012	Sep. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	$ 15,152,846,000		$ 16,431,619,000	$ 16,242,039,000
Total federal funds sold	52,830,000		34,492,000	12,425,000
Securities purchased under agreements to resell	576,355,000		601,891,000	517,263,000
Trading securities	1,343,134,000		1,262,720,000	1,204,366,000
Loans held-for-sale	371,640,000		401,937,000	410,550,000
Securities available for sale	3,186,943,000	[1]	3,061,808,000	3,123,629,000	[2]
Derivative assets	215,116,000		292,472,000	334,025,000
Total other assets	238,309,000			357,326,000
Cash and due from banks	395,631,000		469,879,000	355,978,000
Capital markets receivables	417,743,000		303,893,000	791,190,000
Total assets (Restricted - $.1 billion on September 30, 2013; September 30, 2012; and December 31, 2012)	24,193,341,000		25,520,140,000	25,739,830,000
Total deposits	16,283,909,000		16,629,709,000	16,228,111,000
Trading liabilities	585,969,000		564,429,000	516,970,000
Total federal funds purchased	1,062,901,000		1,351,023,000	1,350,806,000
Securities sold under agreements to repurchase	427,232,000		555,438,000	443,370,000
Other Short-term Borrowings	303,686,000		441,201,000	856,958,000
Term borrowings	1,771,288,000		2,226,482,000	2,263,238,000
Derivative liabilities	165,918,000		202,269,000	225,084,000
Capital markets payables	388,373,000		296,450,000	574,201,000
Total liabilities (Restricted - $.1 billion on September 30, 2013; September 30, 2012; and December 31, 2012)	21,760,048,000		23,010,934,000	23,207,942,000
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	15,152,846,000			16,242,039,000
Total interest-bearing cash	184,179,000			440,916,000
Total federal funds sold	52,830,000			12,425,000
Securities purchased under agreements to resell	576,355,000			517,263,000
Total short-term financial assets	813,364,000			970,604,000
Trading securities	1,343,134,000	[3]		1,204,366,000	[3]
Loans held-for-sale	371,640,000	[3]		410,550,000	[3]
Securities available for sale	3,186,943,000	[3],[4]		3,123,629,000	[3],[5]
Derivative assets	215,116,000	[3]		334,025,000	[3]
Tax credit investments	69,115,000			76,822,000
Deferred compensation assets	23,193,000			23,301,000
Total other assets	92,308,000			100,123,000
Cash and due from banks	395,631,000			355,978,000
Capital markets receivables	417,743,000			791,190,000
Accrued interest receivable	71,889,000			85,042,000
Total nonearning assets	885,263,000			1,232,210,000
Total assets (Restricted - $.1 billion on September 30, 2013; September 30, 2012; and December 31, 2012)	22,060,614,000			23,617,546,000
Defined maturity	1,573,405,000			1,582,097,000
Undefined maturity	14,710,504,000			14,646,014,000
Total deposits	16,283,909,000			16,228,111,000
Trading liabilities	585,969,000	[3]		516,970,000	[3]
Total federal funds purchased	1,062,901,000			1,350,806,000
Securities sold under agreements to repurchase	427,232,000			443,370,000
Other Short-term Borrowings	303,686,000			856,958,000
Total short-term financial liabilities	1,793,819,000			2,651,134,000
Real estate investment trust-preferred	45,811,000			45,743,000
Term borrowings - new market tax credit investment	18,000,000			15,301,000
Borrowings secured by residential real estate	329,574,000			415,975,000
Other long term borrowings	1,377,903,000			1,786,219,000
Total other term borrowings	1,771,288,000			2,263,238,000
Derivative liabilities	165,918,000	[3]		225,084,000	[3]
Capital markets payables	388,373,000			574,201,000
Accrued interest payable	33,924,000			43,184,000
Total other noninterest-bearing liabilities	422,297,000			617,385,000
Total liabilities (Restricted - $.1 billion on September 30, 2013; September 30, 2012; and December 31, 2012)	21,023,200,000			22,501,922,000
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	7,655,562,000			8,359,909,000
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	1,162,718,000			1,202,506,000
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	5,337,221,000			5,619,955,000
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	672,138,000			779,954,000
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	325,207,000			279,715,000
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	14,394,038,000			15,574,198,000
Total interest-bearing cash	184,179,000			440,916,000
Total federal funds sold	52,830,000			12,425,000
Securities purchased under agreements to resell	576,355,000			517,263,000
Total short-term financial assets	813,364,000			970,604,000
Trading securities	1,343,134,000	[3]		1,204,366,000	[3]
Loans held-for-sale	371,640,000	[3]		410,550,000	[3]
Securities available for sale	3,186,943,000	[3],[4]		3,123,629,000	[3],[5]
Derivative assets	215,116,000	[3]		334,025,000	[3]
Tax credit investments	69,115,000			76,822,000
Deferred compensation assets	23,193,000			23,301,000
Total other assets	92,308,000			100,123,000
Cash and due from banks	395,631,000			355,978,000
Capital markets receivables	417,743,000			791,190,000
Accrued interest receivable	71,889,000			85,042,000
Total nonearning assets	885,263,000			1,232,210,000
Total assets (Restricted - $.1 billion on September 30, 2013; September 30, 2012; and December 31, 2012)	21,301,806,000			22,949,705,000
Defined maturity	1,591,314,000			1,618,019,000
Undefined maturity	14,710,504,000			14,646,014,000
Total deposits	16,301,818,000			16,264,033,000
Trading liabilities	585,969,000	[3]		516,970,000	[3]
Total federal funds purchased	1,062,901,000			1,350,806,000
Securities sold under agreements to repurchase	427,232,000			443,370,000
Other Short-term Borrowings	303,686,000			856,958,000
Total short-term financial liabilities	1,793,819,000			2,651,134,000
Real estate investment trust-preferred	47,000,000			42,300,000
Term borrowings - new market tax credit investment	18,025,000			16,280,000
Borrowings secured by residential real estate	194,905,000			353,578,000
Other long term borrowings	1,365,535,000			1,716,741,000
Total other term borrowings	1,625,465,000			2,128,899,000
Derivative liabilities	165,918,000	[3]		225,084,000	[3]
Capital markets payables	388,373,000			574,201,000
Accrued interest payable	33,924,000			43,184,000
Total other noninterest-bearing liabilities	422,297,000			617,385,000
Total liabilities (Restricted - $.1 billion on September 30, 2013; September 30, 2012; and December 31, 2012)	20,895,286,000			22,403,505,000
Loan commitments	1,722,000			1,571,000
Standby and other commitments	4,819,000			5,333,000
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	7,502,354,000			8,138,108,000
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	1,115,304,000			1,146,620,000
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	4,859,306,000			5,287,039,000
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	589,999,000			722,087,000
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	327,075,000			280,344,000
Contractual Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan commitments	9,048,424,000			7,890,786,000
Standby and other commitments	302,160,000			371,899,000
Fair Value Inputs Level1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	20,267,000			13,794,000
Total other assets	40,070,000			38,163,000
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
Total interest-bearing cash	184,179,000			440,916,000
Total federal funds sold	0			0
Securities purchased under agreements to resell	0			0
Total short-term financial assets	184,179,000			440,916,000
Trading securities	0	[3]		0	[3]
Loans held-for-sale	0	[3]		0	[3]
Securities available for sale	20,267,000	[3]		13,794,000	[3]
Derivative assets	16,877,000	[3]		14,862,000	[3]
Tax credit investments	0			0
Deferred compensation assets	23,193,000			23,301,000
Total other assets	23,193,000			23,301,000
Cash and due from banks	395,631,000			355,978,000
Capital markets receivables	0			0
Accrued interest receivable	0			0
Total nonearning assets	395,631,000			355,978,000
Total assets (Restricted - $.1 billion on September 30, 2013; September 30, 2012; and December 31, 2012)	640,147,000			848,851,000
Defined maturity	0			0
Undefined maturity	0			0
Total deposits	0			0
Trading liabilities	0	[3]		0	[3]
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
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 other term borrowings	0			0
Derivative liabilities	9,770,000	[3]		12,424,000	[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, 2013; September 30, 2012; and December 31, 2012)	9,770,000			12,424,000
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	2,954,224,000			2,897,657,000
Total other assets	198,239,000			319,163,000
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
Total interest-bearing cash	0			0
Total federal funds sold	52,830,000			12,425,000
Securities purchased under agreements to resell	576,355,000			517,263,000
Total short-term financial assets	629,185,000			529,688,000
Trading securities	1,327,415,000	[3]		1,190,622,000	[3]
Loans held-for-sale	0	[3]		48,425,000	[3]
Securities available for sale	2,954,224,000	[3]		2,897,657,000	[3]
Derivative assets	198,239,000	[3]		319,163,000	[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	417,743,000			791,190,000
Accrued interest receivable	71,889,000			85,042,000
Total nonearning assets	489,632,000			876,232,000
Total assets (Restricted - $.1 billion on September 30, 2013; September 30, 2012; and December 31, 2012)	5,598,695,000			5,861,787,000
Defined maturity	1,591,314,000			1,618,019,000
Undefined maturity	14,710,504,000			14,646,014,000
Total deposits	16,301,818,000			16,264,033,000
Trading liabilities	585,969,000	[3]		516,970,000	[3]
Total federal funds purchased	1,062,901,000			1,350,806,000
Securities sold under agreements to repurchase	427,232,000			443,370,000
Other Short-term Borrowings	291,971,000			845,373,000
Total short-term financial liabilities	1,782,104,000			2,639,549,000
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	1,365,535,000			1,716,741,000
Total other term borrowings	1,365,535,000			1,716,741,000
Derivative liabilities	153,403,000	[3]		210,320,000	[3]
Capital markets payables	388,373,000			574,201,000
Accrued interest payable	33,924,000			43,184,000
Total other noninterest-bearing liabilities	422,297,000			617,385,000
Total liabilities (Restricted - $.1 billion on September 30, 2013; September 30, 2012; and December 31, 2012)	20,611,126,000			21,964,998,000
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]
Trading securities	15,714,000
Securities available for sale	8,328,000			14,702,000
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	14,394,038,000			15,574,198,000
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	15,719,000	[3]		13,744,000	[3]
Loans held-for-sale	371,640,000	[3]		362,125,000	[3]
Securities available for sale	212,452,000	[3],[4]		212,178,000	[3],[5]
Derivative assets	0	[3]		0	[3]
Tax credit investments	69,115,000			76,822,000
Deferred compensation assets	0			0
Total other assets	69,115,000			76,822,000
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, 2013; September 30, 2012; and December 31, 2012)	15,062,964,000			16,239,067,000
Defined maturity	0			0
Undefined maturity	0			0
Total deposits	0			0
Trading liabilities	0	[3]		0	[3]
Total federal funds purchased	0			0
Securities sold under agreements to repurchase	0			0
Other Short-term Borrowings	11,715,000			11,585,000
Total short-term financial liabilities	11,715,000			11,585,000
Real estate investment trust-preferred	47,000,000			42,300,000
Term borrowings - new market tax credit investment	18,025,000			16,280,000
Borrowings secured by residential real estate	194,905,000			353,578,000
Other long term borrowings	0			0
Total other term borrowings	259,930,000			412,158,000
Derivative liabilities	2,745,000	[3]		2,340,000	[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, 2013; September 30, 2012; and December 31, 2012)	274,390,000			426,083,000
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	7,502,354,000			8,138,108,000
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	1,115,304,000			1,146,620,000
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	4,859,306,000			5,287,039,000
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	589,999,000			722,087,000
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	327,075,000			280,344,000
FHLB-Cincinnati Stock [Member] | Fair Value Inputs Level3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	128,000,000			125,500,000
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 $2.9 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.

[2] Includes $2.8 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 $128.0 million and FRB stock of $66.0 million.

[5] Level 3 includes restricted investments in FHLB-Cincinnati stock of $125.5 million and FRB stock of $66.0 million.