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GOODWILL AND OTHER INTANGIBLE ASSETS Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Sep. 30, 2017
Segment Reporting Information [Line Items]        
Amortization expense, intangible assets $ 92 $ 89 $ 82  
Goodwill, Impairment Loss, Rounded 105      
Other businesses        
Segment Reporting Information [Line Items]        
Reporting unit, percentage of fair value in excess of carrying amount       15.00%
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) $ 34