INCOME TAXES - Components of (Benefit) Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current tax (benefit) provision:
U.S. federal	$ 0	$ 0	$ 0
U.S. state and local	0	0	1
Total current tax (benefit) provision	0	0	1
Deferred tax (benefit) provision:
U.S. federal	(1)	(9)	22
U.S. state and local	(2)	(9)	1
Total deferred tax (benefit) provision	(3)	(18)	23
Less: valuation allowance	0	9	(115)
Total income tax (benefit) provision	$ (3)	$ (9)	$ (91)