Fair Value Of Assets And Liabilities (Summary Of Book Value And Estimated Fair Value Of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013	Jun. 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	$ 15,552,081		$ 15,135,265	$ 15,936,018	[1]
Iinterest-bearing cash	255,920		730,297	344,150
Federal funds sold	51,537		66,079	52,169
Securities purchased under agreements to resell	624,477		412,614	602,126
Trading securities	1,150,280		801,718	1,267,348
Loans held-for-sale	358,945		370,152	385,105
Securities available-for-sale	3,576,542	[2]	3,398,457	3,228,379	[1],[3]
Securities held-to-maturity	4,279		0	0
Derivative assets	162,067		181,866	235,759
Total other assets	186,927			258,061
Cash and due from banks	417,108		349,216	382,601
Capital markets receivables	174,224		45,255	151,660
Total assets (Restricted - $.1 billion on June 30, 2014; June 30, 2013; and December 31, 2013)	24,222,750		23,789,833	24,852,800	[1]
Total deposits	16,157,487		16,734,956	17,011,884
Trading liabilities	706,119		368,348	596,869
Federal funds purchased	947,946		1,042,633	1,142,749
Securities sold under agreements to repurchase	475,530		442,789	433,761
Other short-term borrowings	1,073,250		181,146	446,909
Total term borrowings	1,501,209		1,739,859	1,800,255
Derivative liabilities	138,336		154,280	198,489
Capital markets payables	95,299		21,173	90,231
Total liabilities (Restricted - $.1 billion on June 30, 2014; June 30, 2013; and December 31, 2013)	21,596,599		21,289,082	22,306,392	[1]
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	15,552,081			15,936,018	[4]
Iinterest-bearing cash	255,920			344,150
Federal funds sold	51,537			52,169
Securities purchased under agreements to resell	624,477			602,126
Total short-term financial assets	931,934			998,445
Trading securities	1,150,280	[5]		1,267,348	[5]
Loans held-for-sale	358,945	[5]		385,105	[5]
Securities available-for-sale	3,576,542	[5],[6]		3,228,379	[4],[5],[7]
Securities held-to-maturity	4,279
Derivative assets	162,067	[5]		235,759	[5]
Tax credit investments	61,093			71,483
Deferred compensation assets	24,860			22,302
Total other assets	85,953			93,785
Cash and due from banks	417,108			382,601
Capital markets receivables	174,224			151,660
Accrued interest receivable	67,132			70,897
Total nonearning assets	658,464			605,158
Total assets (Restricted - $.1 billion on June 30, 2014; June 30, 2013; and December 31, 2013)	22,480,545			22,749,997	[4]
Defined maturity	1,312,419			1,654,248
Undefined maturity	14,845,068			15,357,636
Total deposits	16,157,487			17,011,884
Trading liabilities	706,119	[5]		596,869	[5]
Federal funds purchased	947,946			1,142,749
Securities sold under agreements to repurchase	475,530			433,761
Other short-term borrowings	1,073,250			446,909
Total short-term financial liabilities	2,496,726			2,023,419
Real estate investment trust-preferred	45,862			45,794
Term borrowings - new market tax credit investment	18,000			18,000
Borrowings secured by residential real estate	74,103			352,137
Other long term borrowings	1,363,244			1,384,324
Total term borrowings	1,501,209			1,800,255
Derivative liabilities	138,336	[5]		198,489	[5]
Capital markets payables	95,299			90,231
Accrued interest payable	23,218			25,996
Total other noninterest-bearing liabilities	118,517			116,227
Total liabilities (Restricted - $.1 billion on June 30, 2014; June 30, 2013; and December 31, 2013)	21,118,394			21,747,143
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	8,334,245			8,274,565	[4]
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	1,215,692			1,204,275
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	5,100,893			5,428,592
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	570,274			719,051
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	330,977			309,535
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	15,069,802			15,048,711	[4]
Iinterest-bearing cash	255,920			344,150
Federal funds sold	51,537			52,169
Securities purchased under agreements to resell	624,477			602,126
Total short-term financial assets	931,934			998,445
Trading securities	1,150,280	[5]		1,267,348	[5]
Loans held-for-sale	358,945	[5]		385,105	[5]
Securities available-for-sale	3,576,542	[5],[6]		3,228,379	[4],[5],[7]
Securities held-to-maturity	5,556
Derivative assets	162,067	[5]		235,759	[5]
Tax credit investments	61,093			71,483
Deferred compensation assets	24,860			22,302
Total other assets	85,953			93,785
Cash and due from banks	417,108			382,601
Capital markets receivables	174,224			151,660
Accrued interest receivable	67,132			70,897
Total nonearning assets	658,464			605,158
Total assets (Restricted - $.1 billion on June 30, 2014; June 30, 2013; and December 31, 2013)	21,999,543			21,862,690	[4]
Defined maturity	1,319,686			1,457,671
Undefined maturity	14,845,068			15,357,636
Total deposits	16,164,754			16,815,307
Trading liabilities	706,119	[5]		596,869	[5]
Federal funds purchased	947,946			1,142,749
Securities sold under agreements to repurchase	475,530			433,761
Other short-term borrowings	1,073,250			446,909
Total short-term financial liabilities	2,496,726			2,023,419
Real estate investment trust-preferred	49,350			47,000
Term borrowings - new market tax credit investment	17,940			18,079
Borrowings secured by residential real estate	63,951			208,195
Other long term borrowings	1,357,728			1,370,973
Total term borrowings	1,488,969			1,644,247
Derivative liabilities	138,336	[5]		198,489	[5]
Capital markets payables	95,299			90,231
Accrued interest payable	23,218			25,996
Total other noninterest-bearing liabilities	118,517			116,227
Total liabilities (Restricted - $.1 billion on June 30, 2014; June 30, 2013; and December 31, 2013)	21,113,421			21,394,558
Loan commitments	2,079			1,958
Standby and other commitments	5,150			4,995
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	8,244,011			8,073,950	[4]
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	1,168,748			1,166,153
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	4,810,173			4,898,453
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	513,946			598,844
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	332,924			311,311
Contractual Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan commitments	7,493,964			7,234,955
Standby and other commitments	307,543			306,365
Fair Value Inputs Level1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	25,995			14,475
Total other assets	29,979			48,704
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	255,920			344,150
Federal funds sold	0			0
Securities purchased under agreements to resell	0			0
Total short-term financial assets	255,920			344,150
Trading securities	0	[5]		0	[5]
Loans held-for-sale	0	[5]		0	[5]
Securities available-for-sale	25,995	[5]		14,475	[5]
Securities held-to-maturity	0
Derivative assets	5,119	[5]		26,402	[5]
Tax credit investments	0			0
Deferred compensation assets	24,860			22,302
Total other assets	24,860			22,302
Cash and due from banks	417,108			382,601
Capital markets receivables	0			0
Accrued interest receivable	0			0
Total nonearning assets	417,108			382,601
Total assets (Restricted - $.1 billion on June 30, 2014; June 30, 2013; and December 31, 2013)	729,002			789,930
Defined maturity	0			0
Undefined maturity	0			0
Total deposits	0			0
Trading liabilities	0	[5]		0	[5]
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	5,310	[5]		35,027	[5]
Capital markets payables	0			0
Accrued interest payable	0			0
Total other noninterest-bearing liabilities	0			0
Total liabilities (Restricted - $.1 billion on June 30, 2014; June 30, 2013; and December 31, 2013)	5,310			35,027
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	3,385,884			3,000,742	[4]
Total other assets	156,948			209,357
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	51,537			52,169
Securities purchased under agreements to resell	624,477			602,126
Total short-term financial assets	676,014			654,295
Trading securities	1,143,859	[5]		1,251,471	[5]
Loans held-for-sale	3,471	[5]		0	[5]
Securities available-for-sale	3,385,884	[5]		3,000,742	[4],[5]
Securities held-to-maturity	0
Derivative assets	156,948	[5]		209,357	[5]
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	174,224			151,660
Accrued interest receivable	67,132			70,897
Total nonearning assets	241,356			222,557
Total assets (Restricted - $.1 billion on June 30, 2014; June 30, 2013; and December 31, 2013)	5,607,532			5,338,422	[4]
Defined maturity	1,319,686			1,457,671
Undefined maturity	14,845,068			15,357,636
Total deposits	16,164,754			16,815,307
Trading liabilities	706,119	[5]		596,869	[5]
Federal funds purchased	947,946			1,142,749
Securities sold under agreements to repurchase	475,530			433,761
Other short-term borrowings	1,073,250			434,560
Total short-term financial liabilities	2,496,726			2,011,070
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	1,357,728			1,370,973
Total term borrowings	1,357,728			1,370,973
Derivative liabilities	128,301	[5]		161,267	[5]
Capital markets payables	95,299			90,231
Accrued interest payable	23,218			25,996
Total other noninterest-bearing liabilities	118,517			116,227
Total liabilities (Restricted - $.1 billion on June 30, 2014; June 30, 2013; and December 31, 2013)	20,972,145			21,071,713
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	5,861			8,654
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	15,069,802			15,048,711	[4]
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	6,421	[5]		15,877	[5]
Loans held-for-sale	355,474	[5]		385,105	[5]
Securities available-for-sale	164,663	[5],[6]		213,162	[5],[7]
Securities held-to-maturity	5,556
Derivative assets	0	[5]		0	[5]
Tax credit investments	61,093			71,483
Deferred compensation assets	0			0
Total other assets	61,093			71,483
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, 2014; June 30, 2013; and December 31, 2013)	15,663,009			15,734,338	[4]
Defined maturity	0			0
Undefined maturity	0			0
Total deposits	0			0
Trading liabilities	0	[5]		0	[5]
Federal funds purchased	0			0
Securities sold under agreements to repurchase	0			0
Other short-term borrowings	0			12,349
Total short-term financial liabilities	0			12,349
Real estate investment trust-preferred	49,350			47,000
Term borrowings - new market tax credit investment	17,940			18,079
Borrowings secured by residential real estate	63,951			208,195
Other long term borrowings	0			0
Total term borrowings	131,241			273,274
Derivative liabilities	4,725	[5]		2,195	[5]
Capital markets payables	0			0
Accrued interest payable	0			0
Total other noninterest-bearing liabilities	0			0
Total liabilities (Restricted - $.1 billion on June 30, 2014; June 30, 2013; and December 31, 2013)	135,966			287,818
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	8,244,011			8,073,950	[4]
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	1,168,748			1,166,153
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	4,810,173			4,898,453
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	513,946			598,844
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	$ 332,924			$ 311,311

[1] June 30, 2013 balance has been re-presented due to purchase accounting adjustments made in third quarter 2013.

[2] Includes $3.4 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.

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

[4] Balance has been re-presented due to purchase accounting adjustments made in third quarter 2013.

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

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

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