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INCOME TAXES - ADDITIONAL INFORMATION (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Income Tax Disclosure [Abstract]    
Tax expense (benefit) for other discrete tax matters $ (1) $ 6
Tax expense for business divestitures $ 4  
Tax benefit for intangible asset impairment   $ 11