Summary of the Average Impaired Loans and Leases and Interest Income by Class (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Unpaid Principal Balance	$ 3,620		$ 3,168
Recorded Investment	3,353		2,823
Allowance	367	[1]	295	[2]
Commercial Portfolio Segment | Commercial Mortgage Loans Owner Occupied [Member]
Allowance	11	[3]	5
Commercial Portfolio Segment | Troubled Debt Restructuring On Nonaccrual Status [Member]
Recorded Investment	228		177
Commercial Portfolio Segment | Troubled Debt Restructuring On Nonaccrual Status [Member] | Commercial Mortgage Loans Owner Occupied [Member] | Variable Interest Entity, Primary Beneficiary
Unpaid Principal Balance	28
Recorded Investment	28
Allowance	11
Commercial Portfolio Segment | Troubled Debt Restructuring On Nonaccrual Status [Member] | Commercial Mortgage Loans Owner Occupied [Member] | Variable Interest Entity, Primary Beneficiary | Average [Member]
Unpaid Principal Balance	28
Recorded Investment	29
Allowance	$ 11

[1] 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.

[2] Includes $431, $1,175 and $480, respectively, of commercial, residential mortgage and consumer TDRs on accrual status; $177, $123 and $64, respectively, of commercial, residential mortgage and consumer TDRs on nonaccrual status.

[3] Excludes five restructured nonaccrual loans at December 31, 2013 associated with a consolidated variable interest entity, 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.