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Tax situation - Income tax expense (benefit) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Income tax      
Deferred $ (15,592) $ (44,046) $ 15,506
Supplementary retirement fund      
Income tax expense reported in the statements of comprehensive income 41 (23,671) 25,430
Sociedad Minera Cerro Verde S.A.A.      
Income tax      
Current 350,483 550,731 175,870
Deferred 62,718 30,864 25,962
income tax expense (benefit) 413,201 581,595 201,832
Mining taxes      
Current mining royalty and special mining tax 88,224 144,895 32,203
Supplementary retirement fund      
Current 6,371 8,828 2,568
Deferred 751 385 323
Total Supplementary retirement fund 7,122 9,213 2,891
Income tax expense reported in the statements of comprehensive income $ 508,547 $ 735,703 $ 236,926