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COST OF SALES (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Disclosure of Detailed Information About Cost of Sales [Line Items]        
Direct mining cost $ 984 $ 787 $ 1,954 $ 1,545
Depreciation expense 466 328 901 653
Royalty expense 87 51 165 110
Community relations 8 10 15 20
Cost of sales 1,545 1,176 3,035 2,328
Inventory reduction amount 12 2 16 5
Gold        
Disclosure of Detailed Information About Cost of Sales [Line Items]        
Direct mining cost 921 716 1,815 1,406
Depreciation expense 431 290 815 588
Royalty expense 78 43 144 93
Community relations 7 9 13 17
Cost of sales 1,437 1,058 2,787 2,104
Copper        
Disclosure of Detailed Information About Cost of Sales [Line Items]        
Direct mining cost 63 69 139 135
Depreciation expense 28 30 70 49
Royalty expense 9 8 21 17
Community relations 1 1 2 3
Cost of sales 101 108 232 204
Other        
Disclosure of Detailed Information About Cost of Sales [Line Items]        
Direct mining cost 0 2 0 4
Depreciation expense 7 8 16 16
Royalty expense 0 0 0 0
Community relations 0 0 0 0
Cost of sales $ 7 $ 10 $ 16 $ 20