INCOME TAXES - Balance Sheet Classification of Deferred Income Tax Assets (Liabilities) Related to Continuing Operations (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Net noncurrent deferred tax asset	$ 15	$ 268
Net noncurrent deferred tax liability	(43)	0
Net deferred tax asset (liability)	$ (28)	$ 268

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards classified as noncurrent.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant