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NEVADA GOLD MINES JOINT VENTURE - Other information (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
USD ($)
T
$ / T
Sep. 30, 2019
USD ($)
Jul. 01, 2019
USD ($)
Corporate Joint Venture [Member]      
Business Acquisition [Line Items]      
Amounts billed for transition services $ 4    
Employee lease charges 102    
Services provided under agreement $ 488 $ 488  
Cripple Creek and Victor mine      
Business Acquisition [Line Items]      
Transportation costs share (as a percent) 50.00%    
Milling cost per ton | $ / T 20    
Cripple Creek and Victor mine | Corporate Joint Venture [Member]      
Business Acquisition [Line Items]      
Due to (from) related party $ 85 85  
Cripple Creek and Victor mine | Minimum      
Business Acquisition [Line Items]      
Toll mining agreement, monthly delivery (in tons) | T 4,000    
Cripple Creek and Victor mine | Maximum      
Business Acquisition [Line Items]      
Toll mining agreement, monthly delivery (in tons) | T 8,333    
Nevada Gold Mines LLC NGM [Member]      
Business Acquisition [Line Items]      
Transportation costs share (as a percent) 50.00%    
Barrick Gold Corporation [Member]      
Business Acquisition [Line Items]      
Agreement term 2 years    
2035 Senior Notes, net      
Business Acquisition [Line Items]      
Debt instrument, interest rate, stated percentage     5.875%
2035 Senior Notes, net | Nevada Gold Mines LLC NGM [Member] | Guarantee of Indebtedness of Others [Member]      
Business Acquisition [Line Items]      
Principal amount     $ 600
Nevada Gold Mines LLC NGM [Member]      
Business Acquisition [Line Items]      
Revenue since acquisition   492  
Earnings since acquisition   $ 79