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RELATED PARTIES (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Equity Method Investee          
Related Party Transaction [Line Items]          
Revenues $ 9 $ 9 $ 18 $ 18  
Receivables 4   4   $ 3
Accounts payable, related parties 1   1   1
Equity Method Investee | Prepaid Expenses and Other Current Assets          
Related Party Transaction [Line Items]          
Other receivables 3   3   $ 3
Equity Method Investee | Selling, general and administrative          
Related Party Transaction [Line Items]          
Income from related party recognized 4 $ 4 8 $ 8  
Joint Venture          
Related Party Transaction [Line Items]          
Revenues 2   5    
Receivables $ 2   $ 2