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REVENUE - Narrative (Details)
ozt in Thousands, lb in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2022
USD ($)
customers
lb
ozt
$ / ounce
$ / pound
Dec. 31, 2021
USD ($)
lb
ozt
$ / ounce
$ / pound
Disclosure of major customers [line items]    
Number of customers who accounts for more than ten percent of revenue | customers 4  
Minimum percentage of entity revenue for major customers 10.00%  
Gold    
Disclosure of provisional metal sales    
Percentage of composition of principal product (as percent) 90.00%  
Volumes subject to final pricing Copper (millions) Gold (000s) | ozt 42 41
Impact on net income before taxation of 10% movement in market price $ 8 $ 8
Average price of sales subject to final settlement | $ / ounce 1,824 1,819
Percent change in commodity prices used for sensitivity analysis 10.00%  
Copper    
Disclosure of provisional metal sales    
Volumes subject to final pricing Copper (millions) Gold (000s) | lb 60 45
Impact on net income before taxation of 10% movement in market price $ 23 $ 20
Average price of sales subject to final settlement | $ / pound 3.80 4.34
Percent change in commodity prices used for sensitivity analysis 10.00%  
Customer 1 [Member]    
Disclosure of major customers [line items]    
Percentage of entity's revenue 23.00%  
Customer 2 [Member]    
Disclosure of major customers [line items]    
Percentage of entity's revenue 14.00%  
Customer 3 [Member]    
Disclosure of major customers [line items]    
Percentage of entity's revenue 11.00%  
Customer 4 [Member]    
Disclosure of major customers [line items]    
Percentage of entity's revenue 11.00%