DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES - Impact of the Correction on the Company's Consolidated Statement of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
NET LOSS	$ (662)	$ (253)	$ (339)
Warrant fair value adjustment	(12)	(31)	(6)
Recognition of warrant liability	$ 0	81	$ 0
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
NET LOSS		(287)
Warrant fair value adjustment		3
Recognition of warrant liability		0
Revision of Prior Period, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
NET LOSS		34
Warrant fair value adjustment		(34)
Recognition of warrant liability		$ 81