DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES - Impact of the Correction on the Company'sConsolidated Statement of Operations (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
DERIVATIVE AND WARRANT FAIR VALUE ADJUSTMENT	$ 12	$ 8	$ 6
LOSS BEFORE INCOME TAXES	(661)	(253)	(339)
NET LOSS	$ (662)	$ (253)	$ (339)
Basic (in dollars per share)	$ (1.12)	$ (2.31)	$ (4.26)
Diluted (in dollars per share)	$ (1.12)	$ (2.31)	$ (4.37)
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
DERIVATIVE AND WARRANT FAIR VALUE ADJUSTMENT		$ (26)
LOSS BEFORE INCOME TAXES		(287)
NET LOSS		$ (287)
Basic (in dollars per share)		$ (2.62)
Diluted (in dollars per share)		$ (2.62)
Revision of Prior Period, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
DERIVATIVE AND WARRANT FAIR VALUE ADJUSTMENT		$ 34
LOSS BEFORE INCOME TAXES		34
NET LOSS		$ 34
Basic (in dollars per share)		$ 0.31
Diluted (in dollars per share)		$ 0.31