Summary of the Bancorp's Nonperforming Loans and Leases by Class (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	$ 1,029	[1],[2]	$ 1,438	[1],[2]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	329		442
Excluding Oreo Related To Government Insured Loans [Member]
Financing Receivable, Modifications [Line Items]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	257	[3]	378	[3]
Commercial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	697		1,058
Commercial Portfolio Segment | Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	330		487
Commercial Portfolio Segment | Commercial Mortgage Loans Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	125		170
Commercial Portfolio Segment | Commercial Mortgage Loans Non Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	157		251
Commercial Portfolio Segment | Commercial Construction
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	76		138
Commercial Portfolio Segment | Commercial Leases [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	9		12
Residential Mortgage Loans
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	237		275
Consumer Portfolio Segment
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	95		105
Consumer Portfolio Segment | Home Equity
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	53		54
Consumer Portfolio Segment | Automobile Loans
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	2		2
Consumer Portfolio Segment | Credit Card
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	39		48
Consumer Portfolio Segment | Consumer Other Financing Receivable
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	$ 1		$ 1

[1] Excludes $29 and $138 of nonaccrual loans held for sale at December 31, 2012 and 2011, respectively.

[2] Includes $10 and $17 of nonaccrual government insured commercial loans whose repayments are insured by the Small Business Administration at December 31, 2012 and 2011, respectively, and $1 and $2 of restructured nonaccrual government insured commercial loans at December 31, 2012 and 2011, respectively.

[3] Excludes $72 and $64 of OREO related to government insured loans at December 31, 2012 and 2011, respectively.