Condensed Statements of Income - Parent Company Only (Parenthetical) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Dividend Received From Nonbank Companies And Related Subsidiaries		$ 1,000	$ 1,100
Parent Company Only
Dividend Received From Nonbank Companies And Related Subsidiaries	[1]	$ 1,040	$ 1,094	$ 859

[1] The Bancorp’s indirect banking subsidiary paid dividends to the Bancorp’s direct nonbank subsidiary holding company of $1.0 billion, $1.1 billion and $859 million for the years ended December 31, 2015, 2014 and 2013, respectively.