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OTHER EXPENSE (INCOME) , NET (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Other Income and Expenses [Abstract]      
Foreign exchange transaction (gain) loss $ (13) $ (27) $ 6
Other expense (income), net 14 15 (41)
Total other expense (income), net $ 1 $ (12) $ (35)