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FINANCIAL RISK MANAGEMENT - Narrative (Details)
oz in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
oz
Commodity price risk    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Ounces of gold purchased for collars | oz   57
Interest rate risk    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Cash and cash equivalents $ 5,300  
Sensitivity analysis for possible change in risk variable, percent change 1.00%  
Sensitivity analysis for possible change in risk variable, impact on equity $ 37 $ 30
Interest rate risk | Variable rate    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Borrowings 100  
Liquidity risk    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Cash and cash equivalents 5,280 5,188
Borrowings 5,200 5,200
Debt net of cash and cash equivalents (130) $ (33)
Undrawn borrowing facilities $ 3,000  
Required ratio of debt to total capitalization 0.60  
Debt to total capitalization ratio, actual 0.00