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Basis for preparation, consolidation and accounting policies - Assets and liabilities originally denominated in Soles (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
USD ($)
$ / S/
$ / shares
Dec. 31, 2020
USD ($)
$ / S/
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Assets        
Cash and cash equivalents $ 376,999 $ 235,449 $ 210,046 $ 369,200
Trade and other receivables 876,264 333,177    
Income tax credit 15,456 19,837    
Total assets 4,561,811 3,979,617 4,107,274  
Liabilities        
Trade and other payables 262,678 198,882    
Income tax payable 3,026 3,162    
Total liabilities 2,023,280 1,179,760 1,139,074  
PEN        
Assets        
Cash and cash equivalents 8,587 8,606    
Income tax credit 15,456 19,837    
Total assets 712,481 187,542    
Liabilities        
Trade and other payables 72,051 47,705    
Income tax payable 3,026 3,162    
Total liabilities 96,461 89,441    
Net asset (liability) position 616,020 98,101    
Minera Yanacocha SRL and subsidiary [Member]        
Assets        
Cash and cash equivalents 692,849 870,929 818,503 $ 723,208
Trade and other receivables 14,854 49,720    
Total assets 2,107,137 2,313,438    
Liabilities        
Income tax payable 7,407 42,029    
Provisions, other accruals and liabilities 2,535,684 1,762,389    
Total liabilities 2,751,075 1,989,052    
Net loss from currency exchange $ 7,311      
Net gain from currency exchange   $ 1,180 $ 2,902  
Minera Yanacocha SRL and subsidiary [Member] | Buy        
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]        
Closing foreign exchange rate 0.2515 0.2764    
Minera Yanacocha SRL and subsidiary [Member] | Sell        
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]        
Closing foreign exchange rate | $ / S/ 0.2501 0.3020    
Minera Yanacocha SRL and subsidiary [Member] | PEN        
Assets        
Cash and cash equivalents $ 4,658 $ 6,242    
Trade and other receivables 7,283 7,584    
Value added tax credit 39,989 25,214    
Total assets 51,930 39,040    
Liabilities        
Trade and other payables 35,505 48,200    
Income tax payable 11,792 37,779    
Provisions, other accruals and liabilities 16,303 25,774    
Total liabilities 63,600 111,753    
Net asset (liability) position $ (11,670) $ (72,713)