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NET CHANGE IN OPERATING ASSETS AND LIABILITIES (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Decrease (increase) in operating assets:    
Trade and other receivables  $ 190 $ (94)
Inventories, stockpiles and ore on leach pads  (121) (57)
Other assets  (22) 59
Increase (decrease) in operating liabilities:    
Accounts payable (54) (80)
Reclamation and remediation liabilities  (43) (34)
Other accrued liabilities (68) (53)
Net change in operating assets and liabilities $ (118) $ (259)