DEBT AND FINANCING COSTS - Components of Financing Costs, Net (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Debt Disclosure [Abstract]
Interest expense	$ 110	$ 115	$ 222	$ 231
Amortization of deferred loan costs	1	2	6	4
Capitalized interest	(13)	(13)	(25)	(27)
Loss on extinguishment of debt	0	0	0	1
Interest income	(4)	(5)	(10)	(10)
Financing costs, net	$ 94	$ 99	$ 193	$ 199