Fair Value Of Assets And Liabilities (Summary Of Book Value And Estimated Fair Value Of Financial Instruments) (Details) (USD $)	Mar. 31, 2013		Dec. 31, 2012	Mar. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans, net of unearned income and allowance for loan losses	$ 15,624,452,000		$ 16,431,619,000	$ 15,625,314,000
Total federal funds sold	33,738,000		34,492,000	18,732,000
Securities purchased under agreements to resell	732,696,000		601,891,000	595,973,000
Trading securities	1,397,746,000		1,262,720,000	1,238,041,000
Loans held-for-sale	390,874,000		401,937,000	431,905,000
Securities available for sale	3,190,219,000	[1]	3,061,808,000	3,296,603,000	[2]
Derivative assets	274,332,000		292,472,000	340,337,000
Total other assets	297,117,000			364,439,000
Cash and due from banks	275,262,000		469,879,000	349,604,000
Capital markets receivables	533,306,000		303,893,000	522,001,000
Total assets (Restricted - $.1 billion on March 31, 2013 and December 31, 2012; and $.2 billion on March 31, 2012)	25,166,427,000		25,520,140,000	25,678,969,000
Total deposits	16,204,467,000		16,629,709,000	16,935,170,000
Trading liabilities	781,306,000		564,429,000	567,571,000
Total federal funds purchased	1,361,670,000		1,351,023,000	1,487,469,000
Securities sold under agreements to repurchase	488,010,000		555,438,000	313,765,000
Other Short-term Borrowings	186,898,000		441,201,000	181,570,000
Term borrowings	2,197,864,000		2,226,482,000	2,340,706,000
Derivative liabilities	199,999,000		202,269,000	234,188,000
Capital markets payables	461,333,000		296,450,000	361,018,000
Total liabilities	22,566,700,000		23,010,934,000	23,004,796,000
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	15,624,453,000			15,625,314,000
Total interest-bearing cash	431,182,000			761,098,000
Total federal funds sold	33,738,000			18,732,000
Securities purchased under agreements to resell	732,696,000			595,973,000
Total short-term financial assets	1,197,616,000			1,375,803,000
Trading securities	1,397,746,000	[3]		1,238,041,000	[3]
Loans held-for-sale	390,874,000	[3]		431,905,000	[3]
Securities available for sale	3,190,219,000	[3],[4]		3,296,603,000	[3],[5]
Derivative assets	274,332,000	[3]		340,337,000	[3]
Tax credit investments	74,109,000			86,794,000
Deferred compensation assets	22,785,000			24,102,000
Total other assets	96,894,000			110,896,000
Cash and due from banks	275,262,000			349,604,000
Capital markets receivables	533,306,000			522,001,000
Accrued interest receivable	82,711,000			86,630,000
Total nonearning assets	891,279,000			958,235,000
Total assets (Restricted - $.1 billion on March 31, 2013 and December 31, 2012; and $.2 billion on March 31, 2012)	23,063,413,000			23,377,134,000
Defined maturity	1,511,333,000			1,849,839,000
Undefined maturity	14,693,134,000			15,085,331,000
Total deposits	16,204,467,000			16,935,170,000
Trading liabilities	781,306,000	[3]		567,571,000	[3]
Total federal funds purchased	1,361,670,000			1,487,469,000
Securities sold under agreements to repurchase	488,010,000			313,765,000
Other Short-term Borrowings	186,898,000			181,570,000
Total short-term financial liabilities	2,036,578,000			1,982,804,000
Real estate investment trust-preferred	45,777,000			45,710,000
Term borrowings - new market tax credit investment	18,000,000			15,301,000
Borrowings secured by residential real estate	375,261,000			489,145,000
Other long term borrowings	1,758,826,000			1,790,550,000
Total other term borrowings	2,197,864,000			2,340,706,000
Derivative liabilities	199,999,000	[3]		234,188,000	[3]
Capital markets payables	461,333,000			361,018,000
Accrued interest payable	43,437,000			46,211,000
Total other noninterest-bearing liabilities	504,770,000			407,229,000
Total liabilities	21,924,984,000			22,467,668,000
Carrying Reported Amount Fair Value Disclosure [Member] | Commercial Financial And Industrial [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	8,005,081,000			7,585,576,000
Carrying Reported Amount Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member] | Income C R E [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	1,050,837,000			1,214,129,000
Carrying Reported Amount Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member] | Residential C R E [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	49,903,000			86,747,000
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	5,458,763,000			5,717,175,000
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	767,835,000			756,127,000
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	292,034,000			265,560,000
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	14,773,597,000			14,755,139,000
Total interest-bearing cash	431,182,000			761,098,000
Total federal funds sold	33,738,000			18,732,000
Securities purchased under agreements to resell	732,696,000			595,973,000
Total short-term financial assets	1,197,616,000			1,375,803,000
Trading securities	1,397,746,000	[3]		1,238,041,000	[3]
Loans held-for-sale	390,874,000	[3]		431,905,000	[3]
Securities available for sale	3,190,219,000	[3],[4]		3,296,603,000	[3],[5]
Derivative assets	274,332,000	[3]		340,337,000	[3]
Tax credit investments	74,109,000			86,794,000
Deferred compensation assets	22,785,000			24,102,000
Total other assets	96,894,000			110,896,000
Cash and due from banks	275,262,000			349,604,000
Capital markets receivables	533,306,000			522,001,000
Accrued interest receivable	82,711,000			86,630,000
Total nonearning assets	891,279,000			958,235,000
Total assets (Restricted - $.1 billion on March 31, 2013 and December 31, 2012; and $.2 billion on March 31, 2012)	22,212,557,000			22,506,959,000
Defined maturity	1,543,436,000			1,885,016,000
Undefined maturity	14,693,134,000			15,085,331,000
Total deposits	16,236,570,000			16,970,347,000
Trading liabilities	781,306,000	[3]		567,571,000	[3]
Total federal funds purchased	1,361,670,000			1,487,469,000
Securities sold under agreements to repurchase	488,010,000			313,765,000
Other Short-term Borrowings	186,898,000			181,570,000
Total short-term financial liabilities	2,036,578,000			1,982,804,000
Real estate investment trust-preferred	47,000,000			39,950,000
Term borrowings - new market tax credit investment	18,747,000			15,837,000
Borrowings secured by residential real estate	221,809,000			391,316,000
Other long term borrowings	1,731,763,000			1,680,528,000
Total other term borrowings	2,019,319,000			2,127,631,000
Derivative liabilities	199,999,000	[3]		234,188,000	[3]
Capital markets payables	461,333,000			361,018,000
Accrued interest payable	43,437,000			46,211,000
Total other noninterest-bearing liabilities	504,770,000			407,229,000
Total liabilities	21,778,542,000			22,289,770,000
Loan commitments	1,634,000			1,555,000
Standby and other commitments	5,355,000			5,467,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial [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	7,854,761,000			7,366,581,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member] | Income C R E [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	1,014,785,000			1,136,404,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member] | Residential C R E [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	50,130,000			77,419,000
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	4,916,105,000			5,253,260,000
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	644,070,000			655,696,000
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	293,746,000			265,779,000
Contractual Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan commitments	8,486,803,000			7,716,583,000
Standby and other commitments	318,884,000			375,733,000
Fair Value Inputs Level1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other assets	38,578,000			56,493,000
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	431,182,000			761,098,000
Total federal funds sold	0			0
Securities purchased under agreements to resell	0			0
Total short-term financial assets	431,182,000			761,098,000
Trading securities	0	[3]		0	[3]
Loans held-for-sale	0	[3]		0	[3]
Securities available for sale	14,996,000	[3]		13,794,000	[3]
Derivative assets	15,793,000	[3]		32,391,000	[3]
Tax credit investments	0			0
Deferred compensation assets	22,785,000			24,102,000
Total other assets	22,785,000			24,102,000
Cash and due from banks	275,262,000			349,604,000
Capital markets receivables	0			0
Accrued interest receivable	0			0
Total nonearning assets	275,262,000			349,604,000
Total assets (Restricted - $.1 billion on March 31, 2013 and December 31, 2012; and $.2 billion on March 31, 2012)	760,018,000			1,180,989,000
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	16,580,000	[3]		10,538,000	[3]
Capital markets payables	0			0
Accrued interest payable	0			0
Total other noninterest-bearing liabilities	0			0
Total liabilities	16,580,000			10,538,000
Fair Value Inputs Level1 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial [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] | Income C R E [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] | Residential C R E [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]
Total other assets	258,539,000			307,946,000
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	33,738,000			18,732,000
Securities purchased under agreements to resell	732,696,000			595,973,000
Total short-term financial assets	766,434,000			614,705,000
Trading securities	1,381,287,000	[3]		1,220,655,000	[3]
Loans held-for-sale	8,156,000	[3]		81,810,000	[3]
Securities available for sale	2,968,653,000	[3]		3,065,925,000	[3]
Derivative assets	258,539,000	[3]		307,946,000	[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	533,306,000			522,001,000
Accrued interest receivable	82,711,000			86,630,000
Total nonearning assets	616,017,000			608,631,000
Total assets (Restricted - $.1 billion on March 31, 2013 and December 31, 2012; and $.2 billion on March 31, 2012)	5,999,086,000			5,899,672,000
Defined maturity	1,543,436,000			1,885,016,000
Undefined maturity	14,693,134,000			15,085,331,000
Total deposits	16,236,570,000			16,970,347,000
Trading liabilities	781,306,000	[3]		567,571,000	[3]
Total federal funds purchased	1,361,670,000			1,487,469,000
Securities sold under agreements to repurchase	488,010,000			313,765,000
Other Short-term Borrowings	175,914,000			166,497,000
Total short-term financial liabilities	2,025,594,000			1,967,731,000
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	1,731,763,000			1,680,528,000
Total other term borrowings	1,731,763,000			1,680,528,000
Derivative liabilities	181,369,000	[3]		220,690,000	[3]
Capital markets payables	461,333,000			361,018,000
Accrued interest payable	43,437,000			46,211,000
Total other noninterest-bearing liabilities	504,770,000			407,229,000
Total liabilities	21,461,372,000			21,814,096,000
Fair Value Inputs Level2 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial [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] | Income C R E [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] | Residential C R E [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]
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	14,773,597,000			14,755,139,000
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	16,459,000	[3]		17,386,000	[3]
Loans held-for-sale	382,718,000	[3]		350,095,000	[3]
Securities available for sale	206,570,000	[3],[4]		216,884,000	[3],[5]
Derivative assets	0	[3]		0	[3]
Tax credit investments	74,109,000			86,794,000
Deferred compensation assets	0			0
Total other assets	74,109,000			86,794,000
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, 2013 and December 31, 2012; and $.2 billion on March 31, 2012)	15,453,453,000			15,426,298,000
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	10,984,000			15,073,000
Total short-term financial liabilities	10,984,000			15,073,000
Real estate investment trust-preferred	47,000,000			39,950,000
Term borrowings - new market tax credit investment	18,747,000			15,837,000
Borrowings secured by residential real estate	221,809,000			391,316,000
Other long term borrowings	0			0
Total other term borrowings	287,556,000			447,103,000
Derivative liabilities	2,050,000	[3]		2,960,000	[3]
Capital markets payables	0			0
Accrued interest payable	0			0
Total other noninterest-bearing liabilities	0			0
Total liabilities	300,590,000			465,136,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Financial And Industrial [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	7,854,761,000			7,366,581,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member] | Income C R E [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	1,014,785,000			1,136,404,000
Fair Value Inputs Level3 [Member] | Estimate Of Fair Value Fair Value Disclosure [Member] | Commercial Real Estate Portfolio Segment [Member] | Residential C R E [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	50,130,000			77,419,000
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	4,916,105,000			5,253,260,000
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	644,070,000			655,696,000
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	293,746,000			265,779,000
FHLB-Cincinnati Stock [Member] | Fair Value Inputs Level3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted investments	125,500,000			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			$ 66,100,000

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

[2] Includes $2.8 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 $125.5 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 $66.1 million.