Summary of the Bancorp's Nonperforming Loans and Leases by Class (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Modifications [Line Items]
Loans held for sale	$ 2,939	$ 2,954
Other Real Estate, Foreclosed Assets, and Repossessed Assets	329	442
Portfolio loans and leases	85,782	81,018
Non Accrual Loans [Member]
Financing Receivable, Modifications [Line Items]
Loans held for sale	29	138
Non Accrual Loans [Member] \| Government Insured [Member] \| Commercial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Restructured nonaccrual loans and leases	1	2
Non Accrual Loans [Member] \| Government Insured [Member] \| Commercial Portfolio Segment \| Small Business Administration [Member]
Financing Receivable, Modifications [Line Items]
Portfolio loans and leases	10	17
Other Real Estate Owned [Member] \| Government Insured [Member]
Financing Receivable, Modifications [Line Items]
Loans held for sale	$ 72	$ 64

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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The aggregate carrying amount of loans receivable that will be sold to other entities. Includes mortgage and all other loans (collectively, loans) not classified as held for investment. Such loans are stated at the lower of cost or market, or elected fair value. Mortgage loans exclude mortgage-backed securities which are considered a debt security (other loan).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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