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SHARE-BASED AWARDS - Stock Options and RSUs (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised, aggregate intrinsic value	$ 144	$ 46	$ 10
Options granted (in dollars per share)	$ 10.18	$ 0	$ 1.50
Granted (in shares)	150
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	10 years
Vesting period	4 years
Incentive Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	5 years
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years