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Identification and business activity - Statement of Profit or Loss (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of analysis of single amount of discontinued operations [line items]      
Sales of goods $ 900,450,000 $ 676,542,000 $ 867,888,000
Other comprehensive income (loss) 7,746,000 (12,735,000) (2,237,000)
Net loss (262,804,000) (150,339,000) (28,459,000)
Liability directly associated with the held for sale investment in Yanacocha 264,838,000 0  
Provision for closing of Conga mining project 546,800,000    
Yanacocha      
Disclosure of analysis of single amount of discontinued operations [line items]      
Sales of goods 529,817,000 620,162,000 739,302,000
Other comprehensive income (loss) (643,000) (123,000) 1,246,000
Net loss (967,682,000) (165,449,000) (95,257,000)
Provision for closing of Conga mining project 1,253,000,000    
Yanacochas.      
Disclosure of analysis of single amount of discontinued operations [line items]      
Share in results $ (422,394,000) $ (72,219,000) $ (41,580,000)