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ACQUISITIONS AND DIVESTITURES - Gross Cash Proceeds from Divestiture (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Disclosure of Discontinued Operations [Line Items]    
Gross cash proceeds on divestiture $ 990 $ 588
Bald Mountain | Discontinued operations    
Disclosure of Discontinued Operations [Line Items]    
Gross cash proceeds on divestiture 0 423
Round Mountain | Discontinued operations    
Disclosure of Discontinued Operations [Line Items]    
Gross cash proceeds on divestiture 0 165
Veladero | Continuing operations    
Disclosure of Discontinued Operations [Line Items]    
Gross cash proceeds on divestiture $ 990 $ 0