Fair Value Of Assets And Liabilities (Summary Of Book Value And Estimated Fair Value Of Financial Instruments) (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013	Mar. 31, 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	$ 14,872,215,000		$ 15,135,265,000	$ 15,624,452,000
Total federal funds sold	16,555,000		66,079,000	33,738,000
Securities purchased under agreements to resell	605,276,000		412,614,000	732,696,000
Trading securities	1,194,749,000		801,718,000	1,397,746,000
Loans held-for-sale	361,359,000		370,152,000	390,874,000
Securities available-for-sale	3,571,179,000	[1]	3,398,457,000	3,190,219,000	[2]
Securities held-to-maturity	4,274,000		0	0
Derivative assets	166,465,000		181,866,000	274,332,000
Total other assets	189,800,000			297,117,000
Cash and due from banks	450,270,000		349,216,000	275,262,000
Capital markets receivables	51,082,000		45,255,000	169,927,000
Total assets (Restricted - $.1 billion on March 31, 2014; March 31, 2013; and December 31, 2013)	23,941,989,000		23,789,833,000	24,803,048,000
Total deposits	16,672,743,000		16,734,956,000	16,204,467,000
Trading liabilities	667,257,000		368,348,000	781,306,000
Total federal funds purchased	1,135,665,000		1,042,633,000	1,361,670,000
Securities sold under agreements to repurchase	411,795,000		442,789,000	488,010,000
Other Short-term Borrowings	204,023,000		181,146,000	186,898,000
Term borrowings	1,507,048,000		1,739,859,000	2,197,864,000
Derivative liabilities	137,863,000		154,280,000	199,999,000
Capital markets payables	39,510,000		21,173,000	97,954,000
Total liabilities (Restricted - $.1 billion on March 31, 2014; March 31, 2013; and December 31, 2013)	21,397,852,000		21,289,082,000	22,203,321,000
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	14,872,215,000			15,624,452,000
Total interest-bearing cash	685,540,000			431,182,000
Total federal funds sold	16,555,000			33,738,000
Securities purchased under agreements to resell	605,276,000			732,696,000
Total short-term financial assets	1,307,371,000			1,197,616,000
Trading securities	1,194,749,000	[3]		1,397,746,000	[3]
Loans held-for-sale	361,359,000	[3]		390,874,000	[3]
Securities available-for-sale	3,571,179,000	[3],[4]		3,190,219,000	[3],[5]
Securities held-to-maturity	4,274,000
Derivative assets	166,465,000	[3]		274,332,000	[3]
Tax credit investments	64,210,000			74,109,000
Deferred compensation assets	23,335,000			22,785,000
Total other assets	87,545,000			96,894,000
Cash and due from banks	450,270,000			275,262,000
Capital markets receivables	51,082,000			169,927,000
Accrued interest receivable	73,010,000			82,711,000
Total nonearning assets	574,362,000			527,900,000
Total assets (Restricted - $.1 billion on March 31, 2014; March 31, 2013; and December 31, 2013)	22,139,519,000			22,700,033,000
Defined maturity	1,436,657,000			1,511,333,000
Undefined maturity	15,236,086,000			14,693,134,000
Total deposits	16,672,743,000			16,204,467,000
Trading liabilities	667,257,000	[3]		781,306,000	[3]
Total federal funds purchased	1,135,665,000			1,361,670,000
Securities sold under agreements to repurchase	411,795,000			488,010,000
Other Short-term Borrowings	204,023,000			186,898,000
Total short-term financial liabilities	1,751,483,000			2,036,578,000
Real estate investment trust-preferred	45,845,000			45,777,000
Term borrowings - new market tax credit investment	18,000,000			18,000,000
Borrowings secured by residential real estate	77,119,000			375,261,000
Other long term borrowings	1,366,084,000			1,758,826,000
Total other term borrowings	1,507,048,000			2,197,864,000
Derivative liabilities	137,863,000	[3]		199,999,000	[3]
Capital markets payables	39,510,000			97,954,000
Accrued interest payable	33,244,000			43,437,000
Total other noninterest-bearing liabilities	72,754,000			141,391,000
Total liabilities (Restricted - $.1 billion on March 31, 2014; March 31, 2013; and December 31, 2013)	20,809,148,000			21,561,605,000
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	7,680,262,000			8,005,081,000
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	1,136,895,000			1,100,740,000
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	5,134,606,000			5,458,763,000
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	599,721,000			767,835,000
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	320,731,000			292,033,000
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	14,377,047,000			14,773,597,000
Total interest-bearing cash	685,540,000			431,182,000
Total federal funds sold	16,555,000			33,738,000
Securities purchased under agreements to resell	605,276,000			732,696,000
Total short-term financial assets	1,307,371,000			1,197,616,000
Trading securities	1,194,749,000	[3]		1,397,746,000	[3]
Loans held-for-sale	361,359,000	[3]		390,874,000	[3]
Securities available-for-sale	3,571,179,000	[3],[4]		3,190,219,000	[3],[5]
Securities held-to-maturity	5,454,000
Derivative assets	166,465,000	[3]		274,332,000	[3]
Tax credit investments	64,210,000			74,109,000
Deferred compensation assets	23,335,000			22,785,000
Total other assets	87,545,000			96,894,000
Cash and due from banks	450,270,000			275,262,000
Capital markets receivables	51,082,000			169,927,000
Accrued interest receivable	73,010,000			82,711,000
Total nonearning assets	574,362,000			527,900,000
Total assets (Restricted - $.1 billion on March 31, 2014; March 31, 2013; and December 31, 2013)	21,645,531,000			21,849,178,000
Defined maturity	1,448,362,000			1,543,436,000
Undefined maturity	15,236,086,000			14,693,134,000
Total deposits	16,684,448,000			16,236,570,000
Trading liabilities	667,257,000	[3]		781,306,000	[3]
Total federal funds purchased	1,135,665,000			1,361,670,000
Securities sold under agreements to repurchase	411,795,000			488,010,000
Other Short-term Borrowings	204,023,000			186,898,000
Total short-term financial liabilities	1,751,483,000			2,036,578,000
Real estate investment trust-preferred	49,350,000			47,000,000
Term borrowings - new market tax credit investment	17,810,000			18,747,000
Borrowings secured by residential real estate	66,554,000			221,809,000
Other long term borrowings	1,362,408,000			1,731,763,000
Total other term borrowings	1,496,122,000			2,019,319,000
Derivative liabilities	137,863,000	[3]		199,999,000	[3]
Capital markets payables	39,510,000			97,954,000
Accrued interest payable	33,244,000			43,437,000
Total other noninterest-bearing liabilities	72,754,000			141,391,000
Total liabilities (Restricted - $.1 billion on March 31, 2014; March 31, 2013; and December 31, 2013)	20,809,927,000			21,415,163,000
Loan commitments	1,805,000			1,634,000
Standby and other commitments	5,642,000			5,355,000
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	7,595,334,000			7,854,761,000
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	1,093,796,000			1,064,915,000
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	4,824,384,000			4,916,105,000
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	540,843,000			644,070,000
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	322,690,000			293,746,000
Contractual Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan commitments	8,237,754,000			8,486,803,000
Standby and other commitments	316,399,000			318,884,000
Fair Value Inputs Level1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	26,482,000			14,996,000
Total other assets	27,350,000			38,578,000
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
Total interest-bearing cash	685,540,000			431,182,000
Total federal funds sold	0			0
Securities purchased under agreements to resell	0			0
Total short-term financial assets	685,540,000			431,182,000
Trading securities	0	[3]		0	[3]
Loans held-for-sale	0	[3]		0	[3]
Securities available-for-sale	26,482,000	[3]		14,996,000	[3]
Securities held-to-maturity	0
Derivative assets	4,015,000	[3]		15,793,000	[3]
Tax credit investments	0			0
Deferred compensation assets	23,335,000			22,785,000
Total other assets	23,335,000			22,785,000
Cash and due from banks	450,270,000			275,262,000
Capital markets receivables	0			0
Accrued interest receivable	0			0
Total nonearning assets	450,270,000			275,262,000
Total assets (Restricted - $.1 billion on March 31, 2014; March 31, 2013; and December 31, 2013)	1,189,642,000			760,018,000
Defined maturity	0			0
Undefined maturity	0			0
Total deposits	0			0
Trading liabilities	0	[3]		0	[3]
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
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 other term borrowings	0			0
Derivative liabilities	2,738,000	[3]		16,580,000	[3]
Capital markets payables	0			0
Accrued interest payable	0			0
Total other noninterest-bearing liabilities	0			0
Total liabilities (Restricted - $.1 billion on March 31, 2014; March 31, 2013; and December 31, 2013)	2,738,000			16,580,000
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	3,377,977,000			2,968,653,000
Total other assets	162,450,000			258,539,000
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
Total interest-bearing cash	0			0
Total federal funds sold	16,555,000			33,738,000
Securities purchased under agreements to resell	605,276,000			732,696,000
Total short-term financial assets	621,831,000			766,434,000
Trading securities	1,188,156,000	[3]		1,381,287,000	[3]
Loans held-for-sale	3,494,000	[3]		8,156,000	[3]
Securities available-for-sale	3,377,977,000	[3]		2,968,653,000	[3]
Securities held-to-maturity	0
Derivative assets	162,450,000	[3]		258,539,000	[3]
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	51,082,000			169,927,000
Accrued interest receivable	73,010,000			82,711,000
Total nonearning assets	124,092,000			252,638,000
Total assets (Restricted - $.1 billion on March 31, 2014; March 31, 2013; and December 31, 2013)	5,478,000,000			5,635,707,000
Defined maturity	1,448,362,000			1,543,436,000
Undefined maturity	15,236,086,000			14,693,134,000
Total deposits	16,684,448,000			16,236,570,000
Trading liabilities	667,257,000	[3]		781,306,000	[3]
Total federal funds purchased	1,135,665,000			1,361,670,000
Securities sold under agreements to repurchase	411,795,000			488,010,000
Other Short-term Borrowings	204,023,000			175,914,000
Total short-term financial liabilities	1,751,483,000			2,025,594,000
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	1,362,408,000			1,731,763,000
Total other term borrowings	1,362,408,000			1,731,763,000
Derivative liabilities	130,180,000	[3]		181,369,000	[3]
Capital markets payables	39,510,000			97,954,000
Accrued interest payable	33,244,000			43,437,000
Total other noninterest-bearing liabilities	72,754,000			141,391,000
Total liabilities (Restricted - $.1 billion on March 31, 2014; March 31, 2013; and December 31, 2013)	20,668,530,000			21,097,993,000
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	7,982,000			9,076,000
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	14,377,047,000			14,773,597,000
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	6,593,000	[3]		16,459,000	[3]
Loans held-for-sale	357,865,000	[3]		382,718,000	[3]
Securities available-for-sale	166,720,000	[3],[4]		206,570,000	[3],[5]
Securities held-to-maturity	5,454,000
Derivative assets	0	[3]		0	[3]
Tax credit investments	64,210,000			74,109,000
Deferred compensation assets	0			0
Total other assets	64,210,000			74,109,000
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 March 31, 2014; March 31, 2013; and December 31, 2013)	14,977,889,000			15,453,453,000
Defined maturity	0			0
Undefined maturity	0			0
Total deposits	0			0
Trading liabilities	0	[3]		0	[3]
Total federal funds purchased	0			0
Securities sold under agreements to repurchase	0			0
Other Short-term Borrowings	0			10,984,000
Total short-term financial liabilities	0			10,984,000
Real estate investment trust-preferred	49,350,000			47,000,000
Term borrowings - new market tax credit investment	17,810,000			18,747,000
Borrowings secured by residential real estate	66,554,000			221,809,000
Other long term borrowings	0			0
Total other term borrowings	133,714,000			287,556,000
Derivative liabilities	4,945,000	[3]		2,050,000	[3]
Capital markets payables	0			0
Accrued interest payable	0			0
Total other noninterest-bearing liabilities	0			0
Total liabilities (Restricted - $.1 billion on March 31, 2014; March 31, 2013; and December 31, 2013)	138,659,000			300,590,000
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	7,595,334,000			7,854,761,000
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	1,093,796,000			1,064,915,000
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	4,824,384,000			4,916,105,000
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	540,843,000			644,070,000
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	322,690,000			293,746,000
FHLB-Cincinnati Stock [Member] | Fair Value Inputs Level3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	87,900,000			125,500,000
FRB Stock [Member] | Fair Value Inputs Level3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	$ 66,000,000			$ 66,000,000

[1] Includes $3.3 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.

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

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

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

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