XML 725 R283.htm IDEA: XBRL DOCUMENT v3.22.1
Financial - risk management objectives and policies - Additional information (Details)
 12 Months Ended
Dec. 31, 2021
USD ($)
$ / £
Dec. 31, 2020
$ / £
Dec. 31, 2019
$ / £
Disclosure Of Financial risk management [Line Items]      
Decrease in exchange rate basis points 10.00% 10.00% 10.00%
Sociedad Minera Cerro Verde S.A.A. [Member]      
Disclosure Of Financial risk management [Line Items]      
Consolidated minimum net worth | $ $ 2,711,389    
Sociedad Minera Cerro Verde S.A.A. [Member] | Credit risk [member]      
Disclosure Of Financial risk management [Line Items]      
Credit risk collection period 30 days    
Sociedad Minera Cerro Verde S.A.A. [Member] | Minimum      
Disclosure Of Financial risk management [Line Items]      
10% increase in copper price 4.765 3.524 2.865
10% decrease in copper price 3.899 2.884 2.344
Sociedad Minera Cerro Verde S.A.A. [Member] | Maximum      
Disclosure Of Financial risk management [Line Items]      
10% increase in copper price 4.879 3.876 3.085
10% decrease in copper price 3.992 3.172 2.524