Summarizes the Bancorp's Recorded Investment in Portfolio Loans and Leases by Age and Class (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2015		Jun. 30, 2014	Jun. 30, 2015		Jun. 30, 2014	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 30 To 89 Days Past Due	$ 255	[1],[2]		$ 255	[1],[2]		$ 297	[3],[4]
Past Due 90 Days and Greater	347	[1],[2]		347	[1],[2]		407	[3],[4]
Residential Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Portfolio loans and leases at fair value	178		$ 99	178		$ 99
Residential Mortgage Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Portfolio loans and leases at fair value	178			178			108
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	90			90			99
Past Due 90 Days and Greater	342			342			$ 373
Losses Due To Claim Denials And Curtailments	$ 2		$ 2	$ 4		$ 7

[1] Excludes $178 of residential mortgage loans measured at fair value.

[2] Includes accrual and nonaccrual loans and leases.

[3] Excludes $108 of residential mortgage loans measured at fair value.

[4] Includes accrual and nonaccrual loans and leases.