Summary of the Bancorp's Nonperforming Loans and Leases by Class (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Financing Receivable, Modifications
Nonperforming Loans and Leases	$ 951	[1],[2]	$ 1,029	[1],[2]
OREO and other repossessed property	259	[3]	257	[3]
Commercial Portfolio Segment
Financing Receivable, Modifications
Nonperforming Loans and Leases	639		697
Commercial Portfolio Segment | Commercial and Industrial Loans
Financing Receivable, Modifications
Nonperforming Loans and Leases	312		330
Commercial Portfolio Segment | Commercial Mortgage Loans, Owner Occupied
Financing Receivable, Modifications
Nonperforming Loans and Leases	132	[4]	125
Commercial Portfolio Segment | Commercial Mortgage Loans, Non Owner Occupied
Financing Receivable, Modifications
Nonperforming Loans and Leases	117		157
Commercial Portfolio Segment | Commercial Construction
Financing Receivable, Modifications
Nonperforming Loans and Leases	69		76
Commercial Portfolio Segment | Commercial Leases
Financing Receivable, Modifications
Nonperforming Loans and Leases	9		9
Residential Mortgage Loans
Financing Receivable, Modifications
Nonperforming Loans and Leases	221		237
Consumer Portfolio Segment
Financing Receivable, Modifications
Nonperforming Loans and Leases	91		95
Consumer Portfolio Segment | Home Equity
Financing Receivable, Modifications
Nonperforming Loans and Leases	50		53
Consumer Portfolio Segment | Automobile Loans
Financing Receivable, Modifications
Nonperforming Loans and Leases	2		2
Consumer Portfolio Segment | Credit Card
Financing Receivable, Modifications
Nonperforming Loans and Leases	39		39
Consumer Portfolio Segment | Consumer Other Financing Receivable
Financing Receivable, Modifications
Nonperforming Loans and Leases			$ 1

[1] Excludes $19 and $29 of nonaccrual loans held for sale at March 31, 2013 and December 31, 2012, respectively.

[2] Includes $13 and $10 of nonaccrual government insured commercial loans whose repayments are insured by the SBA at March 31, 2013 and December 31, 2012, respectively, and $1 of restructured nonaccrual government insured commercial loans at March 31, 2013 and December 31, 2012.

[3] Excludes $65 and $72 of OREO related to government insured loans at March 31, 2013 and December 31, 2012, respectively.

[4] Excludes $22 million of restructured nonaccrual loans at March 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.