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CONTINGENCIES AND CAPITAL COMMITMENTS (Narrative) (Details)
S/ in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2024
PEN (S/)
Jan. 31, 2025
USD ($)
Government of Cte d'Ivoire        
Disclosure of other provisions        
Potential early payment termination amount   $ 16.5    
Civil Work        
Disclosure of other provisions        
Capital commitments   1.8    
Peru        
Disclosure of other provisions        
Payment of disputed amount   1.2 S/ 4.3  
Peru | 2010 Tax Period        
Disclosure of other provisions        
Payment of disputed amount   1.2 4.3  
Income tax interest and penalties   0.8 2.9  
Peru | 2011 Tax Period        
Disclosure of other provisions        
Payment of disputed amount   0.7 2.8  
Income tax interest and penalties   0.4 S/ 1.7  
Cte d'Ivoire        
Disclosure of other provisions        
Additional early termination payments, cumulative fee   5.2    
Caylloma Mine        
Disclosure of other provisions        
Undiscounted closure costs $ 18.2      
Progressive closure activities 2.4      
Post closure activities 2.3      
Guarantees with government current year $ 13.5 $ 12.9    
Caylloma Mine | Entering into significant commitments or contingent liabilities [member]        
Disclosure of other provisions        
Guarantees with government current year       $ 15.2