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Basis for preparation, consolidation and accounting policies - Additional information (Details)
$ in Thousands
 12 Months Ended
Jan. 01, 2017
Dec. 31, 2021
USD ($)
PEN (S/)
$ / shares
item
Dec. 31, 2020
USD ($)
$ / shares
PEN (S/)
Dec. 31, 2019
USD ($)
Basis for preparation, consolidation and accounting policies        
Useful lives or depreciation of Investment property   20 years    
Workers' profit sharing rate   8.00%    
Qualifying asset, description   The Group defines a qualifying asset as one which value is greater than US$5 million and requires a period greater than 12 months to get it ready for its intended use.    
Applicable tax rate 29.50% 32.00% 32.00% 32.00%
Lease Liabilities   $ 5,779 $ 7,839  
Right-of-use assets   $ 5,338 $ 7,178  
Lease term   10 years    
Maximum [Member]        
Basis for preparation, consolidation and accounting policies        
Normal credit term   90 days    
Mining Royalties Marginal Rate   12.00%    
Useful life of intangible assets   10 years    
Minimum [Member]        
Basis for preparation, consolidation and accounting policies        
Normal credit term   30 days    
Mining Royalties Marginal Rate   1.00%    
Useful life of intangible assets   1 year    
Written put options [member]        
Basis for preparation, consolidation and accounting policies        
Closing foreign exchange rate | $ / shares   0.2501 0.2759  
Purchased call options [member]        
Basis for preparation, consolidation and accounting policies        
Closing foreign exchange rate | $ / shares   0.2516 0.2764  
Minera Yanacocha SRL and subsidiary [Member]        
Basis for preparation, consolidation and accounting policies        
Normal credit term   30 days    
Applicable tax rate 29.50% 29.50% 29.50% 29.50%
Lease Liabilities   $ 115 $ 330  
Interest from short-term money market funds and interest from current bank accounts   $ 1,000 8,100  
Terminal compensation percentage   1.50%    
Maximum severance payments | item   12    
Amortization expense of intangible assets   $ 2,900 3,000 $ 3,000
Intangible assets, net   10,549 7,915  
Contract liabilities   $ 16,949 $ 0  
Minera Yanacocha SRL and subsidiary [Member] | Maximum [Member]        
Basis for preparation, consolidation and accounting policies        
Mining Royalties Marginal Rate   12.00%    
Recovery rate of leach pads   95.00%    
Minera Yanacocha SRL and subsidiary [Member] | Minimum [Member]        
Basis for preparation, consolidation and accounting policies        
Mining Royalties Marginal Rate   1.00%    
Recovery rate of leach pads   50.00%    
Sociedad Minera Cerro Verde S.A.A. [Member]        
Basis for preparation, consolidation and accounting policies        
Workers' profit sharing rate   8.00%    
Applicable tax rate   32.00% 32.00% 32.00%
Lease Liabilities   $ 70,120 $ 79,217  
Right-of-use assets   68,492 76,862 $ 84,856
Amortization expense of intangible assets   1,500 1,000 $ 1,000
Intangible assets, net   20,000 13,100  
Accumulated amortization book value of intangible assets   $ 6,200 $ 4,700  
Progressive rate of sale   1.00%    
Reclassification of accounts payable   $ 5,900    
Sociedad Minera Cerro Verde S.A.A. [Member] | Concessions related to the operation of the port terminal        
Basis for preparation, consolidation and accounting policies        
Useful life of intangible assets   20 years    
Sociedad Minera Cerro Verde S.A.A. [Member] | Maximum [Member]        
Basis for preparation, consolidation and accounting policies        
Progressive rate of quarterly operating income   12.00%    
Sociedad Minera Cerro Verde S.A.A. [Member] | Minimum [Member]        
Basis for preparation, consolidation and accounting policies        
Progressive rate of quarterly operating income   1.00%    
Sociedad Minera Cerro Verde S.A.A. [Member] | Written put options [member]        
Basis for preparation, consolidation and accounting policies        
Closing foreign exchange rate | S/   3.998 3.624  
Sociedad Minera Cerro Verde S.A.A. [Member] | Purchased call options [member]        
Basis for preparation, consolidation and accounting policies        
Closing foreign exchange rate | S/   3.975 3.618  
Plant and equipment [Member] | Minera Yanacocha SRL and subsidiary [Member] | Maximum [Member]        
Basis for preparation, consolidation and accounting policies        
Lease term   10 years    
Plant and equipment [Member] | Minera Yanacocha SRL and subsidiary [Member] | Minimum [Member]        
Basis for preparation, consolidation and accounting policies        
Lease term   3 years    
Buildings and other constructions        
Basis for preparation, consolidation and accounting policies        
Lease Liabilities   $ 2,532 $ 3,971  
Right-of-use assets   $ 2,501 $ 3,330  
Buildings and other constructions | Minera Yanacocha SRL and subsidiary [Member] | Maximum [Member]        
Basis for preparation, consolidation and accounting policies        
Lease term   10 years    
Buildings and other constructions | Minera Yanacocha SRL and subsidiary [Member] | Minimum [Member]        
Basis for preparation, consolidation and accounting policies        
Lease term   5 years    
OSINERGMIN [Member] | Sociedad Minera Cerro Verde S.A.A. [Member]        
Basis for preparation, consolidation and accounting policies        
Contribution rate on sales invoice value   0.14% 0.14% 0.13%
OEFA [Member] | Sociedad Minera Cerro Verde S.A.A. [Member]        
Basis for preparation, consolidation and accounting policies        
Contribution rate on sales invoice value   0.10% 0.10% 0.11%
INGEMMET [Member] | Sociedad Minera Cerro Verde S.A.A. [Member]        
Basis for preparation, consolidation and accounting policies        
Reclassification of accounts payable   $ 6,300