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Equity net - Partners equity (Details) - Minera Yanacocha SRL and subsidiary [Member] - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2021
Dec. 31, 2017
Dec. 31, 2020
Disclosure Of Partners Equity Net LineItems [Line Items]        
Number of shares issued and fully paid   656,484,745   656,484,745
Applicable Dividend Distribution Tax Rate 6.80%   5.00%  
Common shares [member]        
Disclosure Of Partners Equity Net LineItems [Line Items]        
Number of shares issued and fully paid   1,214,528,739   1,214,528,739
Value of shares issued and fully paid   $ 398,216