Summarizes the Bancorp's Recorded Investment in Portfolio Loans and Leases by Age and Class (Parenthetical) (Detail) (USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010		Sep. 30, 2010
Financing Receivable, Recorded Investment, Past Due [Line Items]
Portfolio loans and leases at fair value	$ 62		$ 46		$ 42
Financing Receivable Recorded Investment 30 To 89 Days Past Due	514	[1]	791	[2]
Past Due 90 Days and Greater	1,324	[1],[3]	1,433	[2],[3]
Residential Mortgage Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Portfolio loans and leases at fair value	62		46
Residential Mortgage Loans | Federal Housing Administration Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 30 To 89 Days Past Due	33
Past Due 90 Days and Greater	291
Residential Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 30 To 89 Days Past Due	107	[2],[4]	138	[2],[4]
Past Due 90 Days and Greater	$ 359	[2],[3],[4]	$ 368	[3]

[1] Excludes $62 of loans measured at fair value.

[2] Excludes $46 of loans measured at fair value.

[3] Includes accrual and nonaccrual loans and leases.

[4] Information for current residential mortgage loans includes advances made pursuant to servicing agreements for GNMA mortgage pools whose repayments are insured by the Federal Housing Administration or guaranteed by the Department of Veterans Affairs. As of December 31, 2010, $55 of these loans were 30-89 days past due and $284 were 90 days or more past due.