VIE (Investments in Qualified Affordable Housing Tax Credits) (Detail) - Variable Interest Entity, Not Primary Beneficiary - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other noninterest expense
Schedule of Equity Method Investments
Pre-tax investment and impairment losses	[1]	$ 144	$ 126	$ 118
Applicable income tax expense
Schedule of Equity Method Investments
Tax credits and other benefits		$ (220)	$ (205)	$ (185)

[1] (a) The Bancorp did not recognize impairment losses resulting from the forfeiture or ineligibility of tax credits or other circumstances during the years ended December 31, 2016 , 2015 and 2014 .