INCOME TAXES - Income and Provision for Income Tax (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income (loss) before income taxes
Income (loss) before income taxes	$ 100	$ 429	$ (262)
Provision (benefit) for federal, state and local income taxes
Provision (benefit) for federal, state and local income taxes	$ 0	$ 0

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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