DEBT AND FINANCING COSTS - Components of Financing Costs, Net (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Debt Disclosure [Abstract]
Interest expense	$ 107	$ 113	$ 323	$ 335
Amortization of deferred loan costs	2	2	5	8
Capitalized interest	(9)	(11)	(26)	(36)
Loss on extinguishment of debt	0	94	75	94
Interest income	(5)	(6)	(12)	(16)
Financing costs, net	$ 95	$ 192	$ 365	$ 385