Derivatives (Net Gains (Losses) Recorded in the Consolidated Statements of Income Relating to Free-Standing Derivative Instruments Used for Risk Management and Other Business Purposes) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative Instruments, Gain (Loss)
Net gains (losses) recorded in earnings	[1]	$ (21)	$ 2	$ 24
Interest Rate Contract | Forward Contracts | Loans Held-for-Sale | Mortgage Banking Revenue
Derivative Instruments, Gain (Loss)
Net gains (losses) recorded in earnings		(8)	(17)	14
Interest Rate Contract | Mortgage Servicing Rights | Mortgage Banking Revenue | Residential Mortgage
Derivative Instruments, Gain (Loss)
Net gains (losses) recorded in earnings		(21)	2	24
Foreign Exchange Contract | Forward Contracts | Other Noninterest Income
Derivative Instruments, Gain (Loss)
Net gains (losses) recorded in earnings		10	(7)	2
Equity Contract | Stock warrants associated with Worldpay Holding, LLC | Other Noninterest Income
Derivative Instruments, Gain (Loss)
Net gains (losses) recorded in earnings		0	0	73	[2]
Equity Contract | Swap | Other Noninterest Income
Derivative Instruments, Gain (Loss)
Net gains (losses) recorded in earnings		(59)	(80)	(56)
Equity Contract | Stock warrant | Other Noninterest Income
Derivative Instruments, Gain (Loss)
Net gains (losses) recorded in earnings		$ 0	$ (1)	$ 0

[1] Included in mortgage banking net reven ue in the Consolidated Statements of Income.

[2] a) The Bancorp recognized a net gain of $9 on the exercise of the remaining warrant during the fourth quarter of 2016