Fair Value Of Assets And Liabilities (Summary Of Book Value And Estimated Fair Value Of Financial Instruments) (Details) (USD $)	Mar. 31, 2012		Dec. 31, 2011	Mar. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	$ 15,625,314,000		$ 16,012,776,000	$ 15,383,244,000
Trading securities	1,238,041,000		988,217,000	924,854,000
Loans held-for-sale	431,905,000		413,897,000	370,487,000
Securities available-for-sale	3,296,603,000	[1]	3,066,272,000	3,085,478,000	[2]
Total other assets	364,439,000			282,031,000
Cash & due from banks	349,604,000		384,667,000	337,002,000
Capital markets receivables	522,001,000		164,987,000	595,594,000
Total assets	25,678,969,000		24,789,384,000	24,438,344,000
Total deposits	16,935,170,000		16,213,009,000	15,350,967,000
Trading liabilities	567,571,000		347,285,000	384,250,000
Total other borrowings	181,570,000		172,550,000	237,583,000
Term borrowings	2,340,706,000		2,481,660,000	2,514,754,000
Capital markets payables	361,018,000		164,708,000	413,334,000
Total liabilities	23,004,796,000		22,104,747,000	21,798,287,000
Fair Value Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	15,625,314,000			15,383,244,000
Short-term financial assets				836,199,000
Total interest-bearing cash	761,098,000
Total federal funds sold & securities purchased under agreements to resell	614,705,000
Total short-term financial assets	1,375,803,000	[3]
Trading securities	1,238,041,000	[3]		924,855,000
Loans held-for-sale	431,905,000	[3]		370,487,000
Securities available-for-sale	3,296,603,000	[3],[4]		3,085,478,000
Derivative assets	340,337,000	[3]		256,750,000
Other assets				108,601,000
Low income housing and new market tax credit investments	86,794,000
Deferred compensation assets	24,102,000
Total other assets	110,896,000
Nonearning assets				1,024,807,000
Cash & due from banks	349,604,000
Capital markets receivables	522,001,000
Accrued interest receivable	86,630,000
Total nonearning assets	958,235,000
Total assets	23,377,134,000
Defined maturity	1,849,839,000			1,894,584,000
Undefined maturity	15,085,331,000			13,456,383,000
Total deposits	16,935,170,000			15,350,967,000
Trading liabilities	567,571,000	[3]		384,250,000
Short-term financial liabilities				2,363,376,000
Total federal funds purchased & securities sold under agreements to repurchase	1,801,234,000
Total other borrowings	181,570,000
Total short-term financial liabilities	1,982,804,000
Term borrowings				2,514,754,000
Real estate investment trust-preferred	45,710,000
Term borrowings - new market tax credit investment	15,301,000
Other long term borrowings	1,790,550,000
Total term borrowings	2,340,706,000	[3]
Derivative liabilities	234,188,000	[3]		194,557,000
Other noninterest-bearing liabilities				461,813,000
Capital markets payables	361,018,000
Accrued interest payable	46,211,000
Total other noninterest-bearing liabilities	407,229,000
Total liabilities	22,467,668,000
Fair Value Carrying Amount [Member] | Commercial, Financial, And Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	7,585,576,000
Fair Value Carrying Amount [Member] | Commercial Real Estate [Member] | Income CRE [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	1,214,129,000
Fair Value Carrying Amount [Member] | Commercial Real Estate [Member] | Residential CRE [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	86,747,000
Fair Value Carrying Amount [Member] | Consumer Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	5,717,175,000	[5]
Fair Value Carrying Amount [Member] | Permanent Mortgage Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	756,127,000	[5]
Fair Value Carrying Amount [Member] | Credit Card & Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	265,560,000
Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	14,755,139,000			14,426,299,000
Short-term financial assets				836,199,000
Total interest-bearing cash	761,098,000
Total federal funds sold & securities purchased under agreements to resell	614,705,000
Total short-term financial assets	1,375,803,000	[3]
Trading securities	1,238,041,000	[3]		924,855,000
Loans held-for-sale	431,905,000	[3]		370,487,000
Securities available-for-sale	3,296,603,000	[3],[4]		3,085,478,000
Derivative assets	340,337,000	[3]		256,750,000
Other assets				108,601,000
Low income housing and new market tax credit investments	86,794,000
Deferred compensation assets	24,102,000
Total other assets	110,896,000
Nonearning assets				1,024,807,000
Cash & due from banks	349,604,000
Capital markets receivables	522,001,000
Accrued interest receivable	86,630,000
Total nonearning assets	958,235,000
Total assets	22,506,959,000
Defined maturity	1,885,016,000			1,941,064,000
Undefined maturity	15,085,331,000			13,456,383,000
Total deposits	16,970,347,000			15,397,447,000
Trading liabilities	567,571,000	[3]		384,250,000
Short-term financial liabilities				2,363,376,000
Total federal funds purchased & securities sold under agreements to repurchase	1,801,234,000
Total other borrowings	181,570,000
Total short-term financial liabilities	1,982,804,000
Term borrowings				2,293,737,000
Real estate investment trust-preferred	39,950,000
Term borrowings - new market tax credit investment	15,837,000
Other long term borrowings	1,680,528,000
Total term borrowings	2,127,631,000
Derivative liabilities	234,188,000	[3]		194,557,000
Other noninterest-bearing liabilities				461,813,000
Capital markets payables	361,018,000
Accrued interest payable	46,211,000
Total other noninterest-bearing liabilities	407,229,000
Total liabilities	22,289,770,000
Loan commitments	1,555,000			1,274,000
Standby and other commitments	5,467,000			6,710,000
Fair Value [Member] | Commercial, Financial, And Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	7,366,581,000
Fair Value [Member] | Commercial Real Estate [Member] | Income CRE [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	1,136,404,000
Fair Value [Member] | Commercial Real Estate [Member] | Residential CRE [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	77,419,000
Fair Value [Member] | Consumer Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	5,253,260,000	[5]
Fair Value [Member] | Permanent Mortgage Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	655,696,000	[5]
Fair Value [Member] | Credit Card & Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	265,779,000
Contractual Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan commitments	7,716,583,000			8,284,857,000
Standby and other commitments	375,733,000			454,159,000
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other assets	56,493,000			39,497,000
Level 1 [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total interest-bearing cash	761,098,000
Total short-term financial assets	761,098,000	[3]
Securities available-for-sale	13,794,000	[3],[4]
Derivative assets	32,391,000	[3]
Deferred compensation assets	24,102,000
Total other assets	24,102,000
Cash & due from banks	349,604,000
Total nonearning assets	349,604,000
Total assets	1,180,989,000
Derivative liabilities	10,538,000	[3]
Total liabilities	10,538,000
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other assets	307,946,000			242,534,000
Level 2 [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total federal funds sold & securities purchased under agreements to resell	614,705,000
Total short-term financial assets	614,705,000	[3]
Trading securities	1,220,655,000	[3]
Loans held-for-sale	81,810,000	[3]
Securities available-for-sale	3,065,925,000	[3],[4]
Derivative assets	307,946,000	[3]
Capital markets receivables	522,001,000
Accrued interest receivable	86,630,000
Total nonearning assets	608,631,000
Total assets	5,899,672,000
Defined maturity	1,885,016,000
Undefined maturity	15,085,331,000
Total deposits	16,970,347,000
Trading liabilities	567,571,000	[3]
Total federal funds purchased & securities sold under agreements to repurchase	1,801,234,000
Total other borrowings	166,497,000
Total short-term financial liabilities	1,967,731,000
Other long term borrowings	1,680,528,000
Total term borrowings	2,071,844,000
Derivative liabilities	220,690,000	[3]
Capital markets payables	361,018,000
Accrued interest payable	46,211,000
Total other noninterest-bearing liabilities	407,229,000
Total liabilities	22,205,412,000
Level 3 [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	14,755,139,000
Trading securities	17,386,000	[3]
Loans held-for-sale	350,095,000	[3]
Securities available-for-sale	216,884,000	[3],[4]
Low income housing and new market tax credit investments	86,794,000
Total other assets	86,794,000
Total assets	15,426,298,000
Total other borrowings	15,073,000
Total short-term financial liabilities	15,073,000
Real estate investment trust-preferred	39,950,000
Term borrowings - new market tax credit investment	15,837,000
Total term borrowings	55,787,000
Derivative liabilities	2,960,000	[3]
Total liabilities	73,820,000
Level 3 [Member] | Fair Value [Member] | Commercial, Financial, And Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	7,366,581,000
Level 3 [Member] | Fair Value [Member] | Commercial Real Estate [Member] | Income CRE [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	1,136,404,000
Level 3 [Member] | Fair Value [Member] | Commercial Real Estate [Member] | Residential CRE [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	77,419,000
Level 3 [Member] | Fair Value [Member] | Consumer Real Estate Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	5,253,260,000	[5]
Level 3 [Member] | Fair Value [Member] | Permanent Mortgage Portfolio Segment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	655,696,000	[5]
Level 3 [Member] | Fair Value [Member] | Credit Card & Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net of unearned income and allowance for loan losses, by portfolio segment	265,779,000
FHLB-Cincinnati Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	125,500,000
FRB Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	$ 66,100,000

[1] Includes $2.8 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes. Of this amount, $.4 billion was pledged as collateral for securities sold under repurchase agreements.

[2] Includes $2.8 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes. Of this amount, $.9 bilion was pledged as collateral for securities sold under repurchase agreements.

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

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

[5] Includes restricted real estate loans and secured borrowings.