INCOME TAXES - Schedule of Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current (benefit) provision for income taxes:
Federal	$ (78)	$ (126)	$ (89)
State	2	9	(2)
Current income tax expense (benefit)	(76)	(117)	(91)
Deferred benefit for income taxes:
Federal	(93)	(584)	(4)
State	(4)	(19)	(1)
Deferred income tax expense (benefit)	(97)	(603)	(5)
Benefit for income taxes	$ (173)	$ (720)	$ (96)