VIE (Investments in Qualified Affordable Housing Tax Credits) (Detail) - Variable Interest Entity, Not Primary Beneficiary - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other noninterest expense
Schedule of Equity Method Investments
Pre-tax investment and impairment losses	[1]	$ 154	$ 223	$ 153
Applicable income tax expense
Schedule of Equity Method Investments
Tax credits and other benefits	[1]	$ (192)	$ (220)	$ (210)

[1] (a) The Bancorp did not recognize impairment losses resulting from the forfeiture or ineligibility of tax credits or othe r circumstances during the years ended December 31, 2018 , 2017 and 2016. The Bancorp recognized $57, as adjusted, of impairment losses primarily due to the change in the federal statutory corporate tax rate during the year ended December 31, 2017.