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SHARE-BASED COMPENSATION AWARDS (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense before tax $ 13 $ 15 $ 46 $ 53
Share-based compensation net of deferred tax expense $ 9 $ 12 $ 34 $ 40