Summarizes the Bancorp's Recorded Investment in Portfolio Loans and Leases by Age and Class (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified									3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2014		Dec. 31, 2013		Sep. 30, 2014 Residential Mortgage	Sep. 30, 2013 Residential Mortgage	Sep. 30, 2014 Residential Mortgage Loans	Dec. 31, 2013 Residential Mortgage Loans	Sep. 30, 2014 Residential Mortgage Loans Federal Housing Administration Loan	Sep. 30, 2014 Residential Mortgage Loans Federal Housing Administration Loan	Dec. 31, 2013 Residential Mortgage Loans Federal Housing Administration Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Portfolio loans and leases at fair value					$ 109	$ 89	$ 109	$ 92
Financing Receivable Recorded Investment 30 To 89 Days Past Due	338	[1],[2]	345	[1],[3]					92	92	81
Past Due 90 Days and Greater	432	[1],[2]	643	[1],[3]					351	351	378
Losses Due To Claim Denials And Curtailments									$ 2	$ 9	$ 5

[1] Includes accrual and nonaccrual loans and leases.

[2] Excludes $109 of loans measured at fair value.

[3] Excludes $92 of loans measured at fair value.