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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Supplemental Cash Flow Information [Abstract]    
Other current assets $ (4) $ (1)
Other noncurrent assets 25 (9)
Payables and other current liabilities 221 42
Long-term liabilities and equity 33 71
Total $ 275 $ 103