Fair Value Of Assets And Liabilities (Summary Of Book Value And Estimated Fair Value Of Financial Instruments) (Details) - USD ($)		Sep. 30, 2015		Dec. 31, 2014	Sep. 30, 2014
Assets:
Total loans, net of unearned income and allowance for loan losses		$ 16,514,678,000		$ 15,997,718,000	$ 15,573,376,000
Short Term Financial Assets:
Total interest-bearing cash		596,689,000		1,621,967,000	275,485,000
Total federal funds sold		64,438,000		63,080,000	55,242,000
Securities purchased under agreements to resell		793,098,000		659,154,000	561,802,000
Trading securities		1,229,180,000		1,194,391,000	1,338,022,000
Loans held-for-sale		124,308,000	[1]	141,285,000	151,915,000
Securities available for sale		3,673,641,000	[2]	3,556,613,000	3,534,671,000	[3]
Securities held-to-maturity		4,313,000		4,292,000	4,286,000
Derivative assets		152,548,000		134,088,000	137,742,000
Other Assets
Total other assets		180,513,000			165,523,000
Non Earning Assets
Cash and due from banks		256,342,000		349,171,000	292,687,000
Fixed income receivables		83,547,000		42,488,000	197,507,000
Total assets		25,387,319,000		25,668,187,000	23,982,597,000
Deposits:
Total deposits		18,865,220,000		18,068,939,000	16,144,771,000
Trading liabilities		788,563,000		594,314,000	532,234,000
Short Term Financial Liabilities
Total federal funds purchased		520,992,000		1,037,052,000	928,159,000
Securities sold under agreements to repurchase		332,329,000		562,214,000	479,384,000
Other Short-term Borrowings		99,887,000		157,218,000	790,080,000
Term Borrowings
Total long term borrowings		1,341,186,000		1,880,105,000	1,491,138,000
Derivative liabilities		140,965,000		119,239,000	123,442,000
Other noninterest-bearing liabilities
Fixed income payables		95,346,000		18,157,000	329,960,000
Total liabilities		22,807,074,000		$ 23,086,597,000	21,370,783,000
Carrying Reported Amount Fair Value Disclosure [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		16,514,678,000			15,573,376,000
Short Term Financial Assets:
Total interest-bearing cash		596,689,000			275,485,000
Total federal funds sold		64,438,000			55,242,000
Securities purchased under agreements to resell		793,098,000			561,802,000
Total short-term financial assets		1,454,225,000			892,529,000
Trading securities	[4]	1,229,180,000			1,338,022,000
Loans held-for-sale	[4]	124,308,000			151,915,000
Securities available for sale	[4]	3,673,641,000	[5]		3,534,671,000	[6]
Securities held-to-maturity		4,313,000			4,286,000
Derivative assets	[4]	152,548,000			137,742,000
Other Assets
Tax credit investments		98,341,000			85,998,000
Deferred compensation assets		25,972,000			24,901,000
Total other assets		124,313,000			110,899,000
Non Earning Assets
Cash and due from banks		256,342,000			292,687,000
Fixed income receivables		83,547,000			197,507,000
Accrued interest receivable		65,956,000			71,755,000
Total nonearning assets		405,845,000			561,949,000
Total assets		23,683,051,000			22,305,389,000
Deposits:
Defined maturity		1,033,896,000			1,214,637,000
Undefined maturity		17,831,324,000			14,930,134,000
Total deposits		18,865,220,000			16,144,771,000
Trading liabilities	[4]	788,563,000			532,234,000
Short Term Financial Liabilities
Total federal funds purchased		520,992,000			928,159,000
Securities sold under agreements to repurchase		332,329,000			479,384,000
Other Short-term Borrowings		99,887,000			790,080,000
Total short-term financial liabilities		953,208,000			2,197,623,000
Term Borrowings
Real estate investment trust-preferred		45,947,000			45,879,000
Term borrowings - new market tax credit investment		18,000,000			18,000,000
Borrowings secured by residential real estate		48,491,000			70,720,000
Other long term borrowings		1,228,748,000			1,356,539,000
Total long term borrowings		1,341,186,000			1,491,138,000
Derivative liabilities	[4]	140,965,000			123,442,000
Other noninterest-bearing liabilities
Fixed income payables		95,346,000			329,960,000
Accrued interest payable		25,358,000			30,984,000
Total other noninterest-bearing liabilities		120,704,000			360,944,000
Total liabilities		22,209,846,000			20,850,152,000
Carrying Reported Amount Fair Value Disclosure [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		9,538,832,000			8,407,459,000
Carrying Reported Amount Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		1,462,696,000			1,262,944,000
Carrying Reported Amount Fair Value Disclosure [Member] | Consumer Real Estate Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		4,731,464,000			5,012,593,000
Carrying Reported Amount Fair Value Disclosure [Member] | Permanent Mortgage Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		443,817,000			552,568,000
Carrying Reported Amount Fair Value Disclosure [Member] | Credit Card And Other Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		337,869,000			337,812,000
Estimate Of Fair Value Fair Value Disclosure [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		16,275,671,000			15,301,117,000
Short Term Financial Assets:
Total interest-bearing cash		596,689,000			275,485,000
Total federal funds sold		64,438,000			55,242,000
Securities purchased under agreements to resell		793,098,000			561,802,000
Total short-term financial assets		1,454,225,000			892,529,000
Trading securities	[4]	1,229,180,000			1,338,022,000
Loans held-for-sale	[4]	124,308,000			151,915,000
Securities available for sale	[4]	3,673,641,000	[5]		3,534,671,000	[6]
Securities held-to-maturity		5,404,000			5,380,000
Derivative assets	[4]	152,548,000			137,742,000
Other Assets
Tax credit investments		58,030,000			67,634,000
Deferred compensation assets		25,972,000			24,901,000
Total other assets		84,002,000			92,535,000
Non Earning Assets
Cash and due from banks		256,342,000			292,687,000
Fixed income receivables		83,547,000			197,507,000
Accrued interest receivable		65,956,000			71,755,000
Total nonearning assets		405,845,000			561,949,000
Total assets		23,404,824,000			22,015,860,000
Deposits:
Defined maturity		1,039,007,000			1,220,109,000
Undefined maturity		17,831,324,000			14,930,134,000
Total deposits		18,870,331,000			16,150,243,000
Trading liabilities	[4]	788,563,000			532,234,000
Short Term Financial Liabilities
Total federal funds purchased		520,992,000			928,159,000
Securities sold under agreements to repurchase		332,329,000			479,384,000
Other Short-term Borrowings		99,887,000			790,080,000
Total short-term financial liabilities		953,208,000			2,197,623,000
Term Borrowings
Real estate investment trust-preferred		49,350,000			49,350,000
Term borrowings - new market tax credit investment		18,158,000			17,880,000
Borrowings secured by residential real estate		41,848,000			61,031,000
Other long term borrowings		1,214,410,000			1,346,281,000
Total long term borrowings		1,323,766,000			1,474,542,000
Derivative liabilities	[4]	140,965,000			123,442,000
Other noninterest-bearing liabilities
Fixed income payables		95,346,000			329,960,000
Accrued interest payable		25,358,000			30,984,000
Total other noninterest-bearing liabilities		120,704,000			360,944,000
Total liabilities		22,197,537,000			20,839,028,000
Loan commitments		2,694,000			2,368,000
Standby and other commitments		4,424,000			4,879,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		9,473,702,000			8,348,656,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		1,447,848,000			1,243,925,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Consumer Real Estate Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		4,601,406,000			4,875,939,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Permanent Mortgage Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		413,188,000			492,930,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Credit Card And Other Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		339,527,000			339,667,000
Contractual Amount [Member]
Other noninterest-bearing liabilities
Loan commitments		7,962,431,000			7,344,614,000
Standby and other commitments		281,740,000			320,286,000
Fair Value Inputs Level1 [Member]
Short Term Financial Assets:
Securities available for sale		25,840,000			26,080,000
Other Assets
Total other assets		42,307,000			28,082,000
Fair Value Inputs Level1 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		0			0
Short Term Financial Assets:
Total interest-bearing cash		596,689,000			275,485,000
Total federal funds sold		0			0
Securities purchased under agreements to resell		0			0
Total short-term financial assets		596,689,000			275,485,000
Trading securities	[4]	0			0
Loans held-for-sale	[4]	0			0
Securities available for sale	[4]	25,840,000	[5]		26,080,000	[6]
Securities held-to-maturity		0			0
Derivative assets	[4]	16,335,000			3,181,000
Other Assets
Tax credit investments		0			0
Deferred compensation assets		25,972,000			24,901,000
Total other assets		25,972,000			24,901,000
Non Earning Assets
Cash and due from banks		256,342,000			292,687,000
Fixed income receivables		0			0
Accrued interest receivable		0			0
Total nonearning assets		256,342,000			292,687,000
Total assets		921,178,000			622,334,000
Deposits:
Defined maturity		0			0
Undefined maturity		0			0
Total deposits		0			0
Trading liabilities	[4]	0			0
Short Term Financial Liabilities
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
Term Borrowings
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 long term borrowings		0			0
Derivative liabilities	[4]	15,921,000			2,895,000
Other noninterest-bearing liabilities
Fixed income payables		0			0
Accrued interest payable		0			0
Total other noninterest-bearing liabilities		0			0
Total liabilities		15,921,000			2,895,000
Fair Value Inputs Level1 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Assets:
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]
Assets:
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]
Assets:
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]
Assets:
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]
Assets:
Total loans, net of unearned income and allowance for loan losses		0			0
Fair Value Inputs Level2 [Member]
Short Term Financial Assets:
Securities available for sale		3,489,142,000			3,349,355,000
Other Assets
Total other assets		136,213,000			134,561,000
Fair Value Inputs Level2 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		0			0
Short Term Financial Assets:
Total interest-bearing cash		0			0
Total federal funds sold		64,438,000			55,242,000
Securities purchased under agreements to resell		793,098,000			561,802,000
Total short-term financial assets		857,536,000			617,044,000
Trading securities	[4]	1,224,577,000			1,331,899,000
Loans held-for-sale	[4]	0			7,552,000
Securities available for sale	[4]	3,489,142,000	[5]		3,349,355,000	[6]
Securities held-to-maturity		0			0
Derivative assets	[4]	136,213,000			134,561,000
Other Assets
Tax credit investments		0			0
Deferred compensation assets		0			0
Total other assets		0			0
Non Earning Assets
Cash and due from banks		0			0
Fixed income receivables		83,547,000			197,507,000
Accrued interest receivable		65,956,000			71,755,000
Total nonearning assets		149,503,000			269,262,000
Total assets		5,856,971,000			5,709,673,000
Deposits:
Defined maturity		1,039,007,000			1,220,109,000
Undefined maturity		17,831,324,000			14,930,134,000
Total deposits		18,870,331,000			16,150,243,000
Trading liabilities	[4]	788,563,000			532,234,000
Short Term Financial Liabilities
Total federal funds purchased		520,992,000			928,159,000
Securities sold under agreements to repurchase		332,329,000			479,384,000
Other Short-term Borrowings		99,887,000			790,080,000
Total short-term financial liabilities		953,208,000			2,197,623,000
Term Borrowings
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		1,214,410,000			1,346,281,000
Total long term borrowings		1,214,410,000			1,346,281,000
Derivative liabilities	[4]	120,234,000			112,907,000
Other noninterest-bearing liabilities
Fixed income payables		95,346,000			329,960,000
Accrued interest payable		25,358,000			30,984,000
Total other noninterest-bearing liabilities		120,704,000			360,944,000
Total liabilities		22,067,450,000			20,700,232,000
Fair Value Inputs Level2 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Assets:
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]
Assets:
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]
Assets:
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]
Assets:
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]
Assets:
Total loans, net of unearned income and allowance for loan losses		0			0
Fair Value Inputs Level3 [Member]
Short Term Financial Assets:
Securities available for sale		2,946,000			3,429,000
Other Assets
Total other assets		1,993,000			2,880,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		16,275,671,000			15,301,117,000
Short Term Financial Assets:
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	[4]	4,603,000			6,123,000
Loans held-for-sale	[4]	124,308,000			144,363,000
Securities available for sale	[4]	158,659,000	[5]		159,236,000	[6]
Securities held-to-maturity		5,404,000			5,380,000
Derivative assets	[4]	0			0
Other Assets
Tax credit investments		58,030,000			67,634,000
Deferred compensation assets		0			0
Total other assets		58,030,000			67,634,000
Non Earning Assets
Cash and due from banks		0			0
Fixed income receivables		0			0
Accrued interest receivable		0			0
Total nonearning assets		0			0
Total assets		16,626,675,000			15,683,853,000
Deposits:
Defined maturity		0			0
Undefined maturity		0			0
Total deposits		0			0
Trading liabilities	[4]	0			0
Short Term Financial Liabilities
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
Term Borrowings
Real estate investment trust-preferred		49,350,000			49,350,000
Term borrowings - new market tax credit investment		18,158,000			17,880,000
Borrowings secured by residential real estate		41,848,000			61,031,000
Other long term borrowings		0			0
Total long term borrowings		109,356,000			128,261,000
Derivative liabilities	[4]	4,810,000			7,640,000
Other noninterest-bearing liabilities
Fixed income payables		0			0
Accrued interest payable		0			0
Total other noninterest-bearing liabilities		0			0
Total liabilities		114,166,000			135,901,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		9,473,702,000			8,348,656,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		1,447,848,000			1,243,925,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Consumer Real Estate Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		4,601,406,000			4,875,939,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Permanent Mortgage Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		413,188,000			492,930,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Credit Card And Other Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		339,527,000			339,667,000
FHLB-Cincinnati Stock [Member] | Fair Value Inputs Level3 [Member]
Other noninterest-bearing liabilities
Restricted investments		87,900,000			87,900,000
FRB Stock [Member] | Fair Value Inputs Level3 [Member]
Other noninterest-bearing liabilities
Restricted investments		$ 65,800,000			$ 66,000,000

[1] September 30, 2015 includes $ 21.7 million of held-for-sale consumer mortgage loans secured by residential real estate in process of foreclosure .

[2] Includes $ 2.9 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.

[3] Includes $ 3.2 billion of securities pledged to secure public deposits, securities sold under agreements to repu rchase, and for other purposes .

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

[5] Level 3 includes restricted investments in FHLB-Cincinnati stock of $ 87.9 million and FRB stock of $ 65.8 million .

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