Fair Value Of Assets And Liabilities (Summary Of Book Value And Estimated Fair Value Of Financial Instruments) (Details) (USD $)	Jun. 30, 2013		Dec. 31, 2012	Jun. 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	$ 15,935,112,000		$ 16,431,619,000	$ 15,864,712,000
Total federal funds sold	52,169,000		34,492,000	44,961,000
Securities purchased under agreements to resell	602,126,000		601,891,000	480,543,000
Trading securities	1,267,348,000		1,262,720,000	1,361,717,000
Loans held-for-sale	385,105,000		401,937,000	424,051,000
Securities available for sale	3,229,071,000	[1]	3,061,808,000	3,264,866,000	[1]
Derivative assets	235,759,000		292,472,000	340,810,000
Total other assets	258,061,000			363,455,000
Cash and due from banks	382,601,000		469,879,000	330,931,000
Capital markets receivables	429,801,000		303,893,000	377,496,000
Total assets (Restricted - $.1 billion on June 30, 2013; June 30, 2012; and December 31, 2012)	25,133,274,000		25,520,140,000	25,492,955,000
Total deposits	17,011,884,000		16,629,709,000	16,117,443,000
Trading liabilities	596,869,000		564,429,000	470,631,000
Total federal funds purchased	1,142,749,000		1,351,023,000	1,417,590,000
Securities sold under agreements to repurchase	433,761,000		555,438,000	363,400,000
Other Short-term Borrowings	446,909,000		441,201,000	1,094,179,000
Term borrowings	1,800,255,000		2,226,482,000	2,294,224,000
Derivative liabilities	198,489,000		202,269,000	235,490,000
Capital markets payables	368,372,000		296,450,000	203,548,000
Total liabilities	22,586,923,000		23,010,934,000	22,978,549,000
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	15,935,112,000			15,864,712,000
Total interest-bearing cash	344,150,000			484,430,000
Total federal funds sold	52,169,000			44,961,000
Securities purchased under agreements to resell	602,126,000			480,543,000
Total short-term financial assets	998,445,000			1,009,934,000
Trading securities	1,267,348,000	[2]		1,361,717,000	[2]
Loans held-for-sale	385,105,000	[2]		424,051,000	[2]
Securities available for sale	3,229,071,000	[2],[3]		3,264,866,000	[2],[4]
Derivative assets	235,759,000	[2]		340,810,000	[2]
Tax credit investments	71,483,000			82,287,000
Deferred compensation assets	22,302,000			22,645,000
Total other assets	93,785,000			104,932,000
Cash and due from banks	382,601,000			330,931,000
Capital markets receivables	429,801,000			377,496,000
Accrued interest receivable	70,897,000			75,958,000
Total nonearning assets	883,299,000			784,385,000
Total assets (Restricted - $.1 billion on June 30, 2013; June 30, 2012; and December 31, 2012)	23,027,924,000			23,155,407,000
Defined maturity	1,654,248,000			1,737,702,000
Undefined maturity	15,357,636,000			14,379,741,000
Total deposits	17,011,884,000			16,117,443,000
Trading liabilities	596,869,000	[2]		470,631,000	[2]
Total federal funds purchased	1,142,749,000			1,417,590,000
Securities sold under agreements to repurchase	433,761,000			363,400,000
Other Short-term Borrowings	446,909,000			1,094,179,000
Total short-term financial liabilities	2,023,419,000			2,875,169,000
Real estate investment trust-preferred	45,794,000			45,726,000
Term borrowings - new market tax credit investment	18,000,000			15,301,000
Borrowings secured by residential real estate	352,137,000			445,298,000
Other long term borrowings	1,384,324,000			1,787,899,000
Total other term borrowings	1,800,255,000			2,294,224,000
Derivative liabilities	198,489,000	[2]		235,490,000	[2]
Capital markets payables	368,372,000			203,548,000
Accrued interest payable	25,996,000			29,928,000
Total other noninterest-bearing liabilities	394,368,000			233,476,000
Total liabilities	22,025,284,000			22,226,433,000
Carrying Reported Amount Fair Value Disclosure [Member] | Commercial Financial And Industrial [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	8,273,659,000			7,870,720,000
Carrying Reported Amount Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member] | Income C R E [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	1,160,859,000			1,195,608,000
Carrying Reported Amount Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member] | Residential C R E [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	43,416,000			77,013,000
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	5,428,592,000			5,722,144,000
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	719,051,000			726,595,000
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	309,535,000			272,632,000
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	15,047,805,000			14,978,756,000
Total interest-bearing cash	344,150,000			484,430,000
Total federal funds sold	52,169,000			44,961,000
Securities purchased under agreements to resell	602,126,000			480,543,000
Total short-term financial assets	998,445,000			1,009,934,000
Trading securities	1,267,348,000	[2]		1,361,717,000	[2]
Loans held-for-sale	385,105,000	[2]		424,051,000	[2]
Securities available for sale	3,229,071,000	[2],[3]		3,264,866,000	[2],[4]
Derivative assets	235,759,000	[2]		340,810,000	[2]
Tax credit investments	71,483,000			82,287,000
Deferred compensation assets	22,302,000			22,645,000
Total other assets	93,785,000			104,932,000
Cash and due from banks	382,601,000			330,931,000
Capital markets receivables	429,801,000			377,496,000
Accrued interest receivable	70,897,000			75,958,000
Total nonearning assets	883,299,000			784,385,000
Total assets (Restricted - $.1 billion on June 30, 2013; June 30, 2012; and December 31, 2012)	22,140,617,000			22,269,451,000
Defined maturity	1,457,671,000			1,776,607,000
Undefined maturity	15,357,636,000			14,379,741,000
Total deposits	16,815,307,000			16,156,348,000
Trading liabilities	596,869,000	[2]		470,631,000	[2]
Total federal funds purchased	1,142,749,000			1,417,590,000
Securities sold under agreements to repurchase	433,761,000			363,400,000
Other Short-term Borrowings	446,909,000			1,094,179,000
Total short-term financial liabilities	2,023,419,000			2,875,169,000
Real estate investment trust-preferred	47,000,000			39,950,000
Term borrowings - new market tax credit investment	18,079,000			16,253,000
Borrowings secured by residential real estate	208,195,000			356,238,000
Other long term borrowings	1,370,973,000			1,673,360,000
Total other term borrowings	1,644,247,000			2,085,801,000
Derivative liabilities	198,489,000	[2]		235,490,000	[2]
Capital markets payables	368,372,000			203,548,000
Accrued interest payable	25,996,000			29,928,000
Total other noninterest-bearing liabilities	394,368,000			233,476,000
Total liabilities	21,672,699,000			22,056,915,000
Loan commitments	1,958,000			1,597,000
Standby and other commitments	4,995,000			5,433,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial [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	8,073,044,000			7,649,105,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member] | Income C R E [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	1,122,748,000			1,129,205,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member] | Residential C R E [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	43,405,000			69,380,000
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	4,898,453,000			5,230,876,000
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	598,844,000			626,914,000
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	311,311,000			273,276,000
Contractual Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan commitments	8,425,467,000			7,868,558,000
Standby and other commitments	306,365,000			376,450,000
Fair Value Inputs Level1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other assets	48,704,000			45,168,000
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	344,150,000			484,430,000
Total federal funds sold	0			0
Securities purchased under agreements to resell	0			0
Total short-term financial assets	344,150,000			484,430,000
Trading securities	0	[2]		0	[2]
Loans held-for-sale	0	[2]		0	[2]
Securities available for sale	14,475,000	[2]		13,784,000	[2]
Derivative assets	26,402,000	[2]		22,523,000	[2]
Tax credit investments	0			0
Deferred compensation assets	22,302,000			22,645,000
Total other assets	22,302,000			22,645,000
Cash and due from banks	382,601,000			330,931,000
Capital markets receivables	0			0
Accrued interest receivable	0			0
Total nonearning assets	382,601,000			330,931,000
Total assets (Restricted - $.1 billion on June 30, 2013; June 30, 2012; and December 31, 2012)	789,930,000			874,313,000
Defined maturity	0			0
Undefined maturity	0			0
Total deposits	0			0
Trading liabilities	0	[2]		0	[2]
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	35,027,000	[2]		7,430,000	[2]
Capital markets payables	0			0
Accrued interest payable	0			0
Total other noninterest-bearing liabilities	0			0
Total liabilities	35,027,000			7,430,000
Fair Value Inputs Level1 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial [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] | Income C R E [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] | Residential C R E [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]
Total other assets	209,357,000			318,287,000
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	52,169,000			44,961,000
Securities purchased under agreements to resell	602,126,000			480,543,000
Total short-term financial assets	654,295,000			525,504,000
Trading securities	1,251,471,000	[2]		1,343,221,000	[2]
Loans held-for-sale	0	[2]		62,730,000	[2]
Securities available for sale	3,001,434,000	[2]		3,038,058,000	[2]
Derivative assets	209,357,000	[2]		318,287,000	[2]
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	429,801,000			377,496,000
Accrued interest receivable	70,897,000			75,958,000
Total nonearning assets	500,698,000			453,454,000
Total assets (Restricted - $.1 billion on June 30, 2013; June 30, 2012; and December 31, 2012)	5,617,255,000			5,741,254,000
Defined maturity	1,457,671,000			1,776,607,000
Undefined maturity	15,357,636,000			14,379,741,000
Total deposits	16,815,307,000			16,156,348,000
Trading liabilities	596,869,000	[2]		470,631,000	[2]
Total federal funds purchased	1,142,749,000			1,417,590,000
Securities sold under agreements to repurchase	433,761,000			363,400,000
Other Short-term Borrowings	434,560,000			1,081,740,000
Total short-term financial liabilities	2,011,070,000			2,862,730,000
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	1,370,973,000			1,673,360,000
Total other term borrowings	1,370,973,000			1,673,360,000
Derivative liabilities	161,267,000	[2]		224,555,000	[2]
Capital markets payables	368,372,000			203,548,000
Accrued interest payable	25,996,000			29,928,000
Total other noninterest-bearing liabilities	394,368,000			233,476,000
Total liabilities	21,349,854,000			21,621,100,000
Fair Value Inputs Level2 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial [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] | Income C R E [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] | Residential C R E [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]
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	15,047,805,000			14,978,756,000
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	15,877,000	[2]		18,496,000	[2]
Loans held-for-sale	385,105,000	[2]		361,321,000	[2]
Securities available for sale	213,162,000	[2],[3]		213,024,000	[2],[4]
Derivative assets	0	[2]		0	[2]
Tax credit investments	71,483,000			82,287,000
Deferred compensation assets	0			0
Total other assets	71,483,000			82,287,000
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 June 30, 2013; June 30, 2012; and December 31, 2012)	15,733,432,000			15,653,884,000
Defined maturity	0			0
Undefined maturity	0			0
Total deposits	0			0
Trading liabilities	0	[2]		0	[2]
Total federal funds purchased	0			0
Securities sold under agreements to repurchase	0			0
Other Short-term Borrowings	12,349,000			12,439,000
Total short-term financial liabilities	12,349,000			12,439,000
Real estate investment trust-preferred	47,000,000			39,950,000
Term borrowings - new market tax credit investment	18,079,000			16,253,000
Borrowings secured by residential real estate	208,195,000			356,238,000
Other long term borrowings	0			0
Total other term borrowings	273,274,000			412,441,000
Derivative liabilities	2,195,000	[2]		3,505,000	[2]
Capital markets payables	0			0
Accrued interest payable	0			0
Total other noninterest-bearing liabilities	0			0
Total liabilities	287,818,000			428,385,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial [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	8,073,044,000			7,649,105,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member] | Income C R E [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	1,122,748,000			1,129,205,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member] | Residential C R E [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	43,405,000			69,380,000
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	4,898,453,000			5,230,876,000
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	598,844,000			626,914,000
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	311,311,000			273,276,000
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	$ 66,200,000			$ 66,100,000

[1] Includes $3.0 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.

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

[3] Level 3 includes restricted investments in FHLB-Cincinnati stock of $128.0 million and FRB stock of $66.2 million.

[4] Level 3 includes restricted investments in FHLB-Cincinnati stock of $125.5 million and FRB stock of $66.1 million.