INCOME TAXES - Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Federal	$ 1,324	$ 921	$ 1,067
States and Puerto Rico	116	88	90
Total current provision	1,440	1,009	1,157
Deferred expense (benefit)	132	(71)	(2)
Provision for income taxes	$ 1,572	$ 938	$ 1,155