Summarizes the Bancorp's Recorded Investment in Portfolio Loans and Leases by Age and Class (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015		Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Portfolio loans and leases at fair value	$ 167		$ 108
Total Past Due	635	[1]	704	[2]
30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	306	[1],[3]	297	[2],[4]
90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	329	[1],[3]	407	[2],[4]
Residential Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Portfolio loans and leases at fair value	167		108
Residential Mortgage Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Portfolio loans and leases at fair value	167		108
Residential Mortgage Loans | Federal Housing Administration Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Losses Due To Claim Denials And Curtailments	8		14
Residential Mortgage Loans | Federal Housing Administration Loan | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	102		99
Residential Mortgage Loans | Federal Housing Administration Loan | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 335		$ 373

[1] Excludes $167 of residential mortgage loans measured at fair value at December 31, 2015.

[2] Excludes $108 of residential mortgage loans measured at fair value at December 31, 2014.

[3] Includes accrual and nonaccrual loans and leases.

[4] Includes accrual and nonaccrual loans and leases.