Summarizes the Bancorp's Recorded Investment in Impaired Loans and Related Allowance by Class (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance	$ 2,451		$ 2,729
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance	947		891
Unpaid Principal Balance	3,398		3,620
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable With Related Allowance Recorded Investment	2,232		2,539
Impaired Financing Receivable With No Related Allowance Recorded Investment	839		814
Recorded Investment	3,071	[1]	3,353	[2]
Allowance	362		367
Commercial Portfolio Segment | Commercial and Industrial Loans
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance	663		870
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance	242		181
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable With Related Allowance Recorded Investment	531		759
Impaired Financing Receivable With No Related Allowance Recorded Investment	198		177
Allowance	140		145
Commercial Portfolio Segment | Commercial Mortgage Loans, Owner Occupied
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance	85	[3]	85	[4]
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance	90		106
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable With Related Allowance Recorded Investment	71	[3]	74	[4]
Impaired Financing Receivable With No Related Allowance Recorded Investment	82		98
Allowance	11	[3]	11	[4]
Commercial Portfolio Segment | Commercial Mortgage Loans, Non Owner Occupied
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance	105		154
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance	191		154
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable With Related Allowance Recorded Investment	82		134
Impaired Financing Receivable With No Related Allowance Recorded Investment	185		147
Allowance	12		14
Commercial Portfolio Segment | Commercial Construction
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance	76		68
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance	64		77
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable With Related Allowance Recorded Investment	60		54
Impaired Financing Receivable With No Related Allowance Recorded Investment	52		63
Allowance	5		5
Commercial Portfolio Segment | Commercial Leases
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance	3		12
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance	14		14
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable With Related Allowance Recorded Investment	3		12
Impaired Financing Receivable With No Related Allowance Recorded Investment	14		14
Allowance	3
Residential Mortgage Loans
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance	1,074		1,081
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance	300		313
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable With Related Allowance Recorded Investment	1,044		1,052
Impaired Financing Receivable With No Related Allowance Recorded Investment	266		273
Allowance	140		139
Consumer Portfolio Segment | Home Equity
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance	366		377
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance	43		43
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable With Related Allowance Recorded Investment	363		373
Impaired Financing Receivable With No Related Allowance Recorded Investment	39		39
Allowance	36		39
Consumer Portfolio Segment | Automobile Loans
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance	22		23
Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance	3		3
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable With Related Allowance Recorded Investment	21		23
Impaired Financing Receivable With No Related Allowance Recorded Investment	3		3
Allowance	3		3
Consumer Portfolio Segment | Credit Card
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable With Related Allowance Unpaid Principal Balance	57		59
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable With Related Allowance Recorded Investment	57		58
Allowance	$ 12		$ 11

[1] Includes $847, $1,237 and $430, respectively, of commercial, residential mortgage and consumer TDRs on accrual status; $209, $73 and $53, respectively, of commercial, residential mortgage and consumer TDRs on nonaccrual status.

[2] Includes $869, $1,241 and $444, respectively, of commercial, residential mortgage and consumer TDRs on accrual status; $228, $84 and $52, respectively, of commercial, residential mortgage and consumer TDRs on nonaccrual status. Excludes five restructured loans at December 31, 2013 associated with a consolidated VIE in which the Bancorp has no continuing credit risk due to the risk being assumed by a third party, with an unpaid principal balance of $28, a recorded investment of $28, and an allowance of $11.

[3] Excludes five restructured loans at March 31, 2014 associated with a consolidated VIE in which the Bancorp has no continuing credit risk due to the risk being assumed by a third party, with an unpaid principal balance of $28, a recorded investment of $28, and an allowance of $11.

[4] Excludes five restructured loans at December 31, 2013 associated with a consolidated VIE in which the Bancorp has no continuing credit risk due to the risk being assumed by a third party, with an unpaid principal balance of $28, a recorded investment of $28, and an allowance of $11.