Summarizes the Bancorp's Recorded Investment in Portfolio Loans and Leases by Age and Class (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2010		Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
Portfolio loans and leases at fair value	$ 46		$ 65
Financing Receivable Recorded Investment 30 To 89 Days Past Due	791		519	[1]
Past Due 90 Days and Greater	1,433		1,227	[1],[2]
Losses Due To Claim Denials And Curtailments	2
Residential Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 30 To 89 Days Past Due	138	[3],[4]	110	[3],[4]
Past Due 90 Days and Greater	368	[2]	348	[2],[3],[4]
Residential Mortgage Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Portfolio loans and leases at fair value	46		65
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	55		45
Past Due 90 Days and Greater	$ 284		$ 309

[1] Excludes $65 of loans measured at fair value.

[2] Includes accrual and nonaccrual loans and leases.

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

[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. The Bancorp recognized $2 million in losses for the year ended December 31, 2010 due to claim denials and curtailments associated with these advances.