Summary of the Bancorp's Nonperforming Loans and Leases by Class (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Financing Receivable, Modifications
Loans held for sale	$ 2,691		$ 2,939
OREO and other repossessed property	259	[1]	257	[1]
Portfolio loans and leases	85,595	[2],[3],[4]	85,706	[5],[6]
Commercial Portfolio Segment
Financing Receivable, Modifications
Portfolio loans and leases	49,785	[2]	49,388	[7]
Commercial Portfolio Segment | Commercial Mortgage Loans, Owner Occupied
Financing Receivable, Modifications
Portfolio loans and leases	3,970		4,876
Commercial Portfolio Segment | Variable Interest Entity, Primary Beneficiary | Commercial Mortgage Loans, Owner Occupied
Financing Receivable, Modifications
Restructured nonaccrual loans and leases	22
Nonperforming Financing Receivable
Financing Receivable, Modifications
Portfolio loans and leases	312		332
Non Accrual Loans
Financing Receivable, Modifications
Loans held for sale	19		29
Non Accrual Loans | Government Insured | Commercial Portfolio Segment
Financing Receivable, Modifications
Restructured nonaccrual loans and leases	1		1
Non Accrual Loans | Government Insured | Commercial Portfolio Segment | Small Business Administration
Financing Receivable, Modifications
Portfolio loans and leases	13		10
Other Real Estate Owned | Government Insured
Financing Receivable, Modifications
OREO and other repossessed property	$ 65		$ 72

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

[2] Excludes $81 of residential mortgage loans measured at fair value, and includes $866 of leveraged leases, net of unearned income.

[3] Excludes $81 of loans measured at fair value.

[4] Includes an immaterial amount of government insured commercial loans 30-89 days and 90 days past due and accruing whose repayments are insured by the SBA at March 31, 2013.

[5] Excludes $76 of loans measured at fair value.

[6] Includes an immaterial amount of government insured commercial loans 30-89 and 90 days past due and accruing whose repayments are insured by the SBA at December 31, 2012.

[7] Excludes $76 of residential mortgage loans measured at fair value, and includes $862 of leveraged leases, net of unearned income.