Fair Value Of Assets And Liabilities (Summary Of Book Value And Estimated Fair Value Of Financial Instruments) (Details) - USD ($)		Jun. 30, 2015		Dec. 31, 2014	Jun. 30, 2014
Assets:
Total loans, net of unearned income and allowance for loan losses		$ 16,715,421,000		$ 15,997,718,000	$ 15,552,081,000
Short Term Financial Assets:
Total interest-bearing cash		344,944,000		1,621,967,000	255,920,000
Total federal funds sold		77,039,000		63,080,000	51,537,000
Securities purchased under agreements to resell		816,991,000		659,154,000	624,477,000
Trading securities		1,133,490,000		1,194,391,000	1,150,280,000
Loans held-for-sale		127,196,000	[1]	141,285,000	358,945,000
Securities available for sale		3,648,860,000	[2]	3,556,613,000	3,576,542,000	[3]
Securities held-to-maturity		4,306,000		4,292,000	4,279,000
Derivative assets		115,230,000		134,088,000	162,067,000
Other assets
Total other assets		144,729,000			190,124,000
Non Earning Assets [Abstract]
Cash and due from banks		274,256,000		349,171,000	417,108,000
Fixed income receivables		91,069,000		42,488,000	174,224,000
Total assets		25,239,767,000		25,668,187,000	24,218,345,000
Deposits:
Total deposits		18,674,473,000		18,068,939,000	16,157,487,000
Trading liabilities		732,564,000		594,314,000	706,119,000
Short Term Financial Liabilities
Federal funds purchased		556,862,000		1,037,052,000	947,946,000
Securities sold under agreements to repurchase		311,760,000		562,214,000	475,530,000
Other short-term borrowings		150,350,000		157,218,000	1,073,250,000
Term Borrowings
Total long term borrowings		1,557,647,000		1,880,105,000	1,501,209,000
Derivative liabilities		109,815,000		119,239,000	138,336,000
Other noninterest-bearing liabilities
Fixed income payables		54,301,000		18,157,000	95,299,000
Total liabilities		22,721,862,000		$ 23,086,597,000	21,603,070,000
Carrying Reported Amount Fair Value Disclosure [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		16,715,421,000			15,552,081,000
Short Term Financial Assets:
Total interest-bearing cash		344,944,000			255,920,000
Total federal funds sold		77,039,000			51,537,000
Securities purchased under agreements to resell		816,991,000			624,477,000
Total short-term financial assets		1,238,974,000			931,934,000
Trading securities	[4]	1,133,490,000			1,150,280,000
Loans held-for-sale	[4]	127,196,000			358,945,000
Securities available for sale	[4]	3,648,860,000	[5]		3,576,542,000	[6]
Securities held-to-maturity		4,306,000			4,279,000
Derivative assets	[4]	115,230,000			162,067,000
Other assets
Tax credit investments		90,095,000			82,493,000
Deferred compensation assets		27,341,000			24,860,000
Total other assets		117,436,000			107,353,000
Non Earning Assets [Abstract]
Cash and due from banks		274,256,000			417,108,000
Fixed income receivables		91,069,000			174,224,000
Accrued interest receivable		57,346,000			67,132,000
Total nonearning assets		422,671,000			658,464,000
Total assets		23,523,584,000			22,501,945,000
Deposits:
Defined maturity		1,169,153,000			1,312,419,000
Undefined maturity		17,505,320,000			14,845,068,000
Total deposits		18,674,473,000			16,157,487,000
Trading liabilities	[4]	732,564,000			706,119,000
Short Term Financial Liabilities
Federal funds purchased		556,862,000			947,946,000
Securities sold under agreements to repurchase		311,760,000			475,530,000
Other short-term borrowings		150,350,000			1,073,250,000
Total short-term financial liabilities		1,018,972,000			2,496,726,000
Term Borrowings
Real estate investment trust-preferred		45,930,000			45,862,000
Term borrowings - new market tax credit investment		18,000,000			18,000,000
Borrowings secured by residential real estate		55,679,000			74,103,000
Other long term borrowings		1,438,038,000			1,363,244,000
Total long term borrowings		1,557,647,000			1,501,209,000
Derivative liabilities	[4]	109,815,000			138,336,000
Other noninterest-bearing liabilities
Fixed income payables		54,301,000			95,299,000
Accrued interest payable		16,382,000			23,218,000
Total other noninterest-bearing liabilities		70,683,000			118,517,000
Total liabilities		22,164,154,000			21,118,394,000
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		9,753,813,000			8,334,245,000
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		1,379,223,000			1,215,692,000
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		4,784,814,000			5,100,893,000
Carrying Reported Amount Fair Value Disclosure [Member] | Permanent Mortgage Portfolio Segment [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		465,302,000			570,274,000
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		332,269,000			330,977,000
Estimate Of Fair Value Fair Value Disclosure [Member]
Assets:
Total loans, net of unearned income and allowance for loan losses		16,484,701,000			15,069,802,000
Short Term Financial Assets:
Total interest-bearing cash		344,944,000			255,920,000
Total federal funds sold		77,039,000			51,537,000
Securities purchased under agreements to resell		816,991,000			624,477,000
Total short-term financial assets		1,238,974,000			931,934,000
Trading securities	[4]	1,133,490,000			1,150,280,000
Loans held-for-sale	[4]	127,196,000			358,945,000
Securities available for sale	[4]	3,648,860,000	[5]		3,576,542,000	[6]
Securities held-to-maturity		5,356,000			5,556,000
Derivative assets	[4]	115,230,000			162,067,000
Other assets
Tax credit investments		60,619,000			70,306,000
Deferred compensation assets		27,341,000			24,860,000
Total other assets		87,960,000			95,166,000
Non Earning Assets [Abstract]
Cash and due from banks		274,256,000			417,108,000
Fixed income receivables		91,069,000			174,224,000
Accrued interest receivable		57,346,000			67,132,000
Total nonearning assets		422,671,000			658,464,000
Total assets		23,264,438,000			22,008,756,000
Deposits:
Defined maturity		1,173,899,000			1,319,686,000
Undefined maturity		17,505,320,000			14,845,068,000
Total deposits		18,679,219,000			16,164,754,000
Trading liabilities	[4]	732,564,000			706,119,000
Short Term Financial Liabilities
Federal funds purchased		556,862,000			947,946,000
Securities sold under agreements to repurchase		311,760,000			475,530,000
Other short-term borrowings		150,350,000			1,073,250,000
Total short-term financial liabilities		1,018,972,000			2,496,726,000
Term Borrowings
Real estate investment trust-preferred		49,350,000			49,350,000
Term borrowings - new market tax credit investment		17,983,000			17,940,000
Borrowings secured by residential real estate		48,051,000			63,951,000
Other long term borrowings		1,411,226,000			1,357,728,000
Total long term borrowings		1,526,610,000			1,488,969,000
Derivative liabilities	[4]	109,815,000			138,336,000
Other noninterest-bearing liabilities
Fixed income payables		54,301,000			95,299,000
Accrued interest payable		16,382,000			23,218,000
Total other noninterest-bearing liabilities		70,683,000			118,517,000
Total liabilities		22,137,863,000			21,113,421,000
Loan commitments		2,761,000			2,079,000
Standby and other commitments		4,846,000			5,150,000
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		9,716,906,000			8,244,011,000
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		1,362,420,000			1,168,748,000
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		4,637,309,000			4,810,173,000
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		434,145,000			513,946,000
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		333,921,000			332,924,000
Contractual Amount [Member]
Other noninterest-bearing liabilities
Loan commitments		7,507,315,000			7,227,433,000
Standby and other commitments		304,860,000			307,543,000
Fair Value Inputs Level1 [Member]
Short Term Financial Assets:
Securities available for sale		25,825,000			25,995,000
Other assets
Total other assets		32,640,000			29,979,000
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		344,944,000			255,920,000
Total federal funds sold		0			0
Securities purchased under agreements to resell		0			0
Total short-term financial assets		344,944,000			255,920,000
Trading securities	[4]	0			0
Loans held-for-sale	[4]	0			0
Securities available for sale	[4]	25,825,000	[5]		25,995,000	[6]
Securities held-to-maturity		0			0
Derivative assets	[4]	5,299,000			5,119,000
Other assets
Tax credit investments		0			0
Deferred compensation assets		27,341,000			24,860,000
Total other assets		27,341,000			24,860,000
Non Earning Assets [Abstract]
Cash and due from banks		274,256,000			417,108,000
Fixed income receivables		0			0
Accrued interest receivable		0			0
Total nonearning assets		274,256,000			417,108,000
Total assets		677,665,000			729,002,000
Deposits:
Defined maturity		0			0
Undefined maturity		0			0
Total deposits		0			0
Trading liabilities	[4]	0			0
Short Term Financial Liabilities
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]	4,788,000			5,310,000
Other noninterest-bearing liabilities
Fixed income payables		0			0
Accrued interest payable		0			0
Total other noninterest-bearing liabilities		0			0
Total liabilities		4,788,000			5,310,000
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		3,463,981,000			3,385,884,000
Other assets
Total other assets		109,931,000			156,948,000
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		77,039,000			51,537,000
Securities purchased under agreements to resell		816,991,000			624,477,000
Total short-term financial assets		894,030,000			676,014,000
Trading securities	[4]	1,128,561,000			1,143,859,000
Loans held-for-sale	[4]	0			3,471,000
Securities available for sale	[4]	3,463,981,000	[5]		3,385,884,000	[6]
Securities held-to-maturity		0			0
Derivative assets	[4]	109,931,000			156,948,000
Other assets
Tax credit investments		0			0
Deferred compensation assets		0			0
Total other assets		0			0
Non Earning Assets [Abstract]
Cash and due from banks		0			0
Fixed income receivables		91,069,000			174,224,000
Accrued interest receivable		57,346,000			67,132,000
Total nonearning assets		148,415,000			241,356,000
Total assets		5,744,918,000			5,607,532,000
Deposits:
Defined maturity		1,173,899,000			1,319,686,000
Undefined maturity		17,505,320,000			14,845,068,000
Total deposits		18,679,219,000			16,164,754,000
Trading liabilities	[4]	732,564,000			706,119,000
Short Term Financial Liabilities
Federal funds purchased		556,862,000			947,946,000
Securities sold under agreements to repurchase		311,760,000			475,530,000
Other short-term borrowings		150,350,000			1,073,250,000
Total short-term financial liabilities		1,018,972,000			2,496,726,000
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		1,411,226,000			1,357,728,000
Total long term borrowings		1,411,226,000			1,357,728,000
Derivative liabilities	[4]	100,217,000			128,301,000
Other noninterest-bearing liabilities
Fixed income payables		54,301,000			95,299,000
Accrued interest payable		16,382,000			23,218,000
Total other noninterest-bearing liabilities		70,683,000			118,517,000
Total liabilities		22,012,881,000			20,972,145,000
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		3,060,000			5,861,000
Other assets
Total other assets		2,158,000			3,197,000
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		16,484,701,000			15,069,802,000
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]	4,929,000			6,421,000
Loans held-for-sale	[4]	127,196,000			355,474,000
Securities available for sale	[4]	159,054,000	[5]		164,663,000	[6]
Securities held-to-maturity		5,356,000			5,556,000
Derivative assets	[4]	0			0
Other assets
Tax credit investments		60,619,000			70,306,000
Deferred compensation assets		0			0
Total other assets		60,619,000			70,306,000
Non Earning Assets [Abstract]
Cash and due from banks		0			0
Fixed income receivables		0			0
Accrued interest receivable		0			0
Total nonearning assets		0			0
Total assets		16,841,855,000			15,672,222,000
Deposits:
Defined maturity		0			0
Undefined maturity		0			0
Total deposits		0			0
Trading liabilities	[4]	0			0
Short Term Financial Liabilities
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		17,983,000			17,940,000
Borrowings secured by residential real estate		48,051,000			63,951,000
Other long term borrowings		0			0
Total long term borrowings		115,384,000			131,241,000
Derivative liabilities	[4]	4,810,000			4,725,000
Other noninterest-bearing liabilities
Fixed income payables		0			0
Accrued interest payable		0			0
Total other noninterest-bearing liabilities		0			0
Total liabilities		120,194,000			135,966,000
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		9,716,906,000			8,244,011,000
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		1,362,420,000			1,168,748,000
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		4,637,309,000			4,810,173,000
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		434,145,000			513,946,000
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		333,921,000			332,924,000
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] June 30, 2015 includes $20.2 million of held-for-sale consumer mortgage loans secured by residential real estate in process of foreclosure.

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

[3] Includes $ 3.4 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 $ 6 5 . 8 million.

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