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Sales - Additional information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure Of Net Sales [Line Items]      
Percentage of entity's revenue 10.00% 10.00%  
Revenue from sale of goods, related party transactions $ 4,000,000 $ 2,400,000 $ 2,700,000
Increase decrease in revenue from sale of copper through adjustments arising from change in provisional price $ 88,600 $ 64,700 $ 56,800
Percentage of sales to related party 95.00% 94.00% 92.00%
Customer1 [Member]      
Disclosure Of Net Sales [Line Items]      
Percentage of entity's revenue 37.00% 26.00% 25.00%
Customer2 [Member]      
Disclosure Of Net Sales [Line Items]      
Percentage of entity's revenue 19.00% 23.00% 16.00%
Customer3 [Member]      
Disclosure Of Net Sales [Line Items]      
Percentage of entity's revenue 17.00% 16.00% 11.00%
Customer4 [Member]      
Disclosure Of Net Sales [Line Items]      
Percentage of entity's revenue 15.00% 15.00%  
Trade receivables [member]      
Disclosure Of Net Sales [Line Items]      
Percentage of entity's revenue 68.00% 65.00%  
Minera Yanacocha SRL and subsidiary [Member]      
Disclosure Of Net Sales [Line Items]      
Adjustments for decrease (increase) in trade and other receivables $ (34,866) $ (7,110) $ 13,290
Minera Yanacocha SRL and subsidiary [Member] | Copper concentrate [Member]      
Disclosure Of Net Sales [Line Items]      
Adjustments for decrease (increase) in trade and other receivables $ 71 $ 583 $ 176
Minera Yanacocha SRL and subsidiary [Member] | Ocean Partners | Copper concentrate [Member]      
Disclosure Of Net Sales [Line Items]      
Percentage of copper sales 100.00%    
Minera Yanacocha SRL and subsidiary [Member] | Switzerland      
Disclosure Of Net Sales [Line Items]      
Percentage of copper sales 100.00%    
Minera Yanacocha SRL and subsidiary [Member] | Switzerland | Copper concentrate [Member]      
Disclosure Of Net Sales [Line Items]      
Percentage of copper sales     100.00%
Minera Yanacocha SRL and subsidiary [Member] | Switzerland | Ocean Partners      
Disclosure Of Net Sales [Line Items]      
Percentage of copper sales   100.00%  
Sociedad Minera Cerro Verde S.A.A. [Member]      
Disclosure Of Net Sales [Line Items]      
Percentage Of Sale Expenses On Operating Income 1.00%