Summary of the Bancorp's Nonperforming Loans and Leases by Class (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	$ 579	[1],[2]	$ 751	[1],[2]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	236		306
Excludes OREO Related to Government Insured Loans
Financing Receivable, Modifications [Line Items]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	165	[3]	229	[3]
Commercial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	367		458
Commercial Portfolio Segment | Commercial and Industrial Loans
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	228		281
Commercial Portfolio Segment | Commercial Mortgage Loans, Owner Occupied
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	78	[4]	95	[4]
Commercial Portfolio Segment | Commercial Mortgage Loans Non Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	57		48
Commercial Portfolio Segment | Commercial Construction
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases			29
Commercial Portfolio Segment | Commercial Leases
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	4		5
Residential Mortgage Loans
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	77		166
Consumer Portfolio Segment
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	135		127
Consumer Portfolio Segment | Home Equity
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	93		93
Consumer Portfolio Segment | Automobile Loans
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	1		1
Consumer Portfolio Segment | Credit Card
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	$ 41		$ 33

[1] Excludes $39 and $6 of nonaccrual loans held for sale at December 31, 2014 and 2013, respectively.

[2] Includes $9 and $10 of nonaccrual government insured commercial loans whose repayments are insured by the SBA at December 31, 2014 and 2013, respectively, and $4 and $2 of restructured nonaccrual government insured commercial loans at December 31, 2014 and 2013, respectively.

[3] Excludes $71 and $77 of OREO related to government insured loans at December 31, 2014 and 2013, respectively.

[4] Excludes $21 of restructured nonaccrual loans at December 31, 2014 and 2013 associated with a consolidated VIE in which the Bancorp has no continuing credit risk due the risk being assumed by a third party.