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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Supplemental Cash Flow Information [Abstract]    
Other current assets $ 11 $ (12)
Other noncurrent assets 9 6
Payables and other current liabilities (7) 62
Long-term liabilities and equity 30 (3)
Total $ 43 $ 53