DEBT - Components of Financing Costs, Net (Detail) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
Interest expense		$ 457	$ 464	$ 486
Amortization of deferred loan costs		9	8	11
Capitalized interest		(51)	(48)	(15)
Loss on extinguishment of debt	$ 1	1	1	39
Interest income		(19)	(8)	(10)
Financing costs, net		$ 397	$ 417	$ 511