Fair Value Of Assets And Liabilities (Summary Of Book Value And Estimated Fair Value Of Financial Instruments) (Details) (USD $)	Jun. 30, 2012		Dec. 31, 2011	Jun. 30, 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	$ 15,864,712,000		$ 16,012,776,000	$ 15,537,555,000
Trading securities	1,361,717,000		988,217,000	1,196,380,000
Loans held-for-sale	424,051,000		413,897,000	397,931,000
Securities available for sale	3,264,866,000	[1]	3,066,272,000	3,230,477,000	[2]
Total other assets	363,455,000			330,032,000
Cash and Due from Banks	330,931,000		384,667,000	313,416,000
Capital markets receivables	377,496,000		164,987,000	625,243,000
Total assets	25,492,955,000		24,789,384,000	25,054,066,000
Total deposits	16,117,443,000		16,213,009,000	15,896,027,000
Trading liabilities	470,631,000		347,285,000	498,915,000
Other Short-term Borrowings	1,094,179,000		172,550,000	187,902,000
Term borrowings	2,294,224,000		2,481,660,000	2,502,517,000
Capital markets payables	203,548,000		164,708,000	464,993,000
Total liabilities	22,978,549,000		22,104,747,000	22,372,684,000
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	15,864,712,000			15,537,555,000
Short-term financial assets				861,441,000
Total interest-bearing cash	484,430,000
Total federal funds sold & securities purchased under agreements to resell	525,504,000
Total short-term financial assets	1,009,934,000
Trading securities	1,361,717,000	[3],[4]		1,196,380,000
Loans held-for-sale	424,051,000	[3]		397,931,000
Securities available for sale	3,264,866,000	[3],[5]		3,230,477,000
Derivative assets	340,810,000	[3]		304,676,000
Other assets				104,409,000
Low income housing and new market tax credit investments	82,287,000
Deferred compensation assets	22,645,000
Total other assets	104,932,000
Nonearning assets				1,019,589,000
Cash and Due from Banks	330,931,000
Capital markets receivables	377,496,000
Accrued interest receivable	75,958,000
Total nonearning assets	784,385,000
Total assets	23,155,407,000
Defined maturity	1,737,702,000			1,791,174,000
Undefined maturity	14,379,741,000			14,104,853,000
Total deposits	16,117,443,000			15,896,027,000
Trading liabilities	470,631,000	[3]		498,915,000
Short-term financial liabilities				2,193,901,000
Total federal funds purchased & securities sold under agreements to repurchase	1,780,990,000
Other Short-term Borrowings	1,094,179,000
Total short-term financial liabilities	2,875,169,000
Term borrowings				2,502,517,000
Real estate investment trust-preferred	45,726,000
Term borrowings - new market tax credit investment	15,301,000
Borrowings secured by residential real estate	445,298,000
Other long term borrowings	1,787,899,000
Total term borrowings	2,294,224,000
Derivative liabilities	235,490,000	[3]		212,289,000
Other noninterest-bearing liabilities				498,726,000
Capital markets payables	203,548,000
Accrued interest payable	29,928,000
Total other noninterest-bearing liabilities	233,476,000
Total liabilities	22,226,433,000
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	7,870,720,000
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	1,195,608,000
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	77,013,000
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	5,722,144,000	[6]
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	726,595,000	[6]
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	272,632,000
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	14,978,756,000			14,667,125,000
Short-term financial assets				861,441,000
Total interest-bearing cash	484,430,000
Total federal funds sold & securities purchased under agreements to resell	525,504,000
Total short-term financial assets	1,009,934,000
Trading securities	1,361,717,000	[3],[4]		1,196,380,000
Loans held-for-sale	424,051,000	[3]		397,931,000
Securities available for sale	3,264,866,000	[3],[5]		3,230,477,000
Derivative assets	340,810,000	[3]		304,676,000
Other assets				104,409,000
Low income housing and new market tax credit investments	82,287,000
Deferred compensation assets	22,645,000
Total other assets	104,932,000
Nonearning assets				1,019,589,000
Cash and Due from Banks	330,931,000
Capital markets receivables	377,496,000
Accrued interest receivable	75,958,000
Total nonearning assets	784,385,000
Total assets	22,269,451,000
Defined maturity	1,776,607,000			1,840,353,000
Undefined maturity	14,379,741,000			14,104,853,000
Total deposits	16,156,348,000			15,945,206,000
Trading liabilities	470,631,000	[3]		498,915,000
Short-term financial liabilities				2,193,901,000
Total federal funds purchased & securities sold under agreements to repurchase	1,780,990,000
Other Short-term Borrowings	1,094,179,000
Total short-term financial liabilities	2,875,169,000
Term borrowings				2,301,311,000
Real estate investment trust-preferred	39,950,000
Term borrowings - new market tax credit investment	16,253,000
Borrowings secured by residential real estate	356,238,000
Other long term borrowings	1,673,360,000
Total term borrowings	2,085,801,000
Derivative liabilities	235,490,000	[3]		212,289,000
Other noninterest-bearing liabilities				498,726,000
Capital markets payables	203,548,000
Accrued interest payable	29,928,000
Total other noninterest-bearing liabilities	233,476,000
Total liabilities	22,056,915,000
Loan commitments	1,597,000			1,234,000
Standby and other commitments	5,433,000			6,534,000
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	7,649,105,000
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	1,129,205,000
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	69,380,000
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	5,230,876,000	[6]
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	626,914,000	[6]
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	273,276,000
Contractual Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan commitments	7,868,558,000			7,938,091,000
Standby and other commitments	376,450,000			391,539,000
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other assets	45,168,000			37,556,000
Level 1 [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	0
Total interest-bearing cash	484,430,000
Total federal funds sold & securities purchased under agreements to resell	0
Total short-term financial assets	484,430,000
Trading securities	0	[3]
Loans held-for-sale	0	[3]
Securities available for sale	13,784,000	[3]
Derivative assets	22,523,000	[3]
Low income housing and new market tax credit investments	0
Deferred compensation assets	22,645,000
Total other assets	22,645,000
Cash and Due from Banks	330,931,000
Capital markets receivables	0
Accrued interest receivable	0
Total nonearning assets	330,931,000
Total assets	874,313,000
Defined maturity	0
Undefined maturity	0
Total deposits	0
Trading liabilities	0	[3]
Total federal funds purchased & securities sold under agreements to repurchase	0
Other Short-term Borrowings	0
Total short-term financial liabilities	0
Real estate investment trust-preferred	0
Term borrowings - new market tax credit investment	0
Borrowings secured by residential real estate	0
Other long term borrowings	0
Total term borrowings	0
Derivative liabilities	7,430,000	[3]
Capital markets payables	0
Accrued interest payable	0
Total other noninterest-bearing liabilities	0
Total liabilities	7,430,000
Level 1 [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	0
Level 1 [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	0
Level 1 [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	0
Level 1 [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	0	[6]
Level 1 [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	0	[6]
Level 1 [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	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other assets	318,287,000			292,476,000
Level 2 [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	0
Total interest-bearing cash	0
Total federal funds sold & securities purchased under agreements to resell	525,504,000
Total short-term financial assets	525,504,000
Trading securities	1,343,221,000	[3]
Loans held-for-sale	62,730,000	[3]
Securities available for sale	3,038,058,000	[3]
Derivative assets	318,287,000	[3]
Low income housing and new market tax credit investments	0
Deferred compensation assets	0
Total other assets	0
Cash and Due from Banks	0
Capital markets receivables	377,496,000
Accrued interest receivable	75,958,000
Total nonearning assets	453,454,000
Total assets	5,741,254,000
Defined maturity	1,776,607,000
Undefined maturity	14,379,741,000
Total deposits	16,156,348,000
Trading liabilities	470,631,000	[3]
Total federal funds purchased & securities sold under agreements to repurchase	1,780,990,000
Other Short-term Borrowings	1,081,740,000
Total short-term financial liabilities	2,862,730,000
Real estate investment trust-preferred	0
Term borrowings - new market tax credit investment	0
Borrowings secured by residential real estate	0
Other long term borrowings	1,673,360,000
Total term borrowings	1,673,360,000
Derivative liabilities	224,555,000	[3]
Capital markets payables	203,548,000
Accrued interest payable	29,928,000
Total other noninterest-bearing liabilities	233,476,000
Total liabilities	21,621,100,000
Level 2 [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	0
Level 2 [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	0
Level 2 [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	0
Level 2 [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	0	[6]
Level 2 [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	0	[6]
Level 2 [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	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other assets	0			0
Mortgage loan pools held for trading at cost	3,600,000
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	14,978,756,000
Total interest-bearing cash	0
Total federal funds sold & securities purchased under agreements to resell	0
Total short-term financial assets	0
Trading securities	18,496,000	[3],[4]
Loans held-for-sale	361,321,000	[3]
Securities available for sale	213,024,000	[3],[5]
Derivative assets	0	[3]
Low income housing and new market tax credit investments	82,287,000
Deferred compensation assets	0
Total other assets	82,287,000
Cash and Due from Banks	0
Capital markets receivables	0
Accrued interest receivable	0
Total nonearning assets	0
Total assets	15,653,884,000
Defined maturity	0
Undefined maturity	0
Total deposits	0
Trading liabilities	0	[3]
Total federal funds purchased & securities sold under agreements to repurchase	0
Other Short-term Borrowings	12,439,000
Total short-term financial liabilities	12,439,000
Real estate investment trust-preferred	39,950,000
Term borrowings - new market tax credit investment	16,253,000
Borrowings secured by residential real estate	356,238,000
Other long term borrowings	0
Total term borrowings	412,441,000
Derivative liabilities	3,505,000	[3]
Capital markets payables	0
Accrued interest payable	0
Total other noninterest-bearing liabilities	0
Total liabilities	428,385,000
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	7,649,105,000
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	1,129,205,000
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	69,380,000
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	5,230,876,000	[6]
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	626,914,000	[6]
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	273,276,000
FHLB-Cincinnati Stock [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	125,500,000
FRB Stock [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	$ 66,000,000

[1] Includes $3.0 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes. Of this amount, $.5 billion was pledged as collateral for securities sold under repurchase agreements.

[2] Includes $2.9 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes. Of this amount, $1.1 billion was pledged as collateral for securities sold under repurchase agreements.

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

[4] Level 3 includes $3.6 million of trading loans not recorded at fair value.

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

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