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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Supplemental Cash Flow Information [Abstract]    
Other current assets $ (29) $ 5
Other noncurrent assets 14 9
Payables and other current liabilities (14) (36)
Long-term liabilities and equity (1) (4)
Total $ (30) $ (26)