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EXPLORATION, EVALUATION AND PROJECT EXPENSES (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Disclosure of detailed information about property, plant and equipment [line items]    
Minesite exploration and evaluation $ 47 $ 44
Global exploration and evaluation 126 88
Corporate development 13 14
Business improvement and innovation 32 15
Total exploration, evaluation and project expenses 354 237
Pascua-Lama    
Disclosure of detailed information about property, plant and equipment [line items]    
Advanced project costs 122 59
Other    
Disclosure of detailed information about property, plant and equipment [line items]    
Advanced project costs $ 14 $ 17