SHARE-BASED COMPENSATION - Deferred Compensation Costs (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Deferred compensation costs related to unvested awards	$ 35	$ 34
Service-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award
Deferred compensation costs related to unvested awards	33	27
Performance-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award
Deferred compensation costs related to unvested awards	0	6
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award
Deferred compensation costs related to unvested awards	33	33
SARs
Share-based Compensation Arrangement by Share-based Payment Award
Deferred compensation costs related to unvested awards	$ 2	$ 1
Outstanding, weighted average remaining contractual terms	5 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Outstanding, weighted average remaining contractual terms	1 year
Deferred compensation expense weighted average expected recognition period	1 year
Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Outstanding, weighted average remaining contractual terms	2 years
Deferred compensation expense weighted average expected recognition period	3 years

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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