DEBT - Summary of Interest Expenses and Weighted-Average Effective Interest Rates Related To Convertible Senior Notes and Other Senior Notes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accounting Standards Update 2020-06
Debt Instrument
Total interest expense	$ (6)		$ (19)
Convertible Debt
Debt Instrument
Coupon interest expense	2	$ 3	5	$ 11
Amortization of debt discount and debt issuance costs	1	12	3	36
Total interest expense	$ 3	$ 15	$ 8	$ 47
Weighted-average effective interest rate	1.20%	3.90%	1.20%	3.70%
Senior Notes
Debt Instrument
Coupon interest expense	$ 54	$ 60	$ 168	$ 198
Amortization of debt discount and debt issuance costs	2	2	7	8
Total interest expense	$ 56	$ 62	$ 175	$ 206