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Tax situation - Effective income tax (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 01, 2017
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Income Tax Explanatory        
Profit before income tax   $ 124,429 $ 101,129 $ (58,099)
Income tax rate 29.50% 32.00% 32.00% 32.00%
Expected income tax expense   $ (82,803) $ 72,237 $ (23,716)
Non - deductible expenses   (13,144) 2,048 (14,310)
Aggregate current and deferred tax relating to items credited (charged) directly to equity   (13,372)    
Tax expense (income), continuing operations   41 (23,671) 25,430
Sociedad Minera Cerro Verde S.A.A.        
Disclosure Of Income Tax Explanatory        
Profit before income tax   $ 1,433,900 $ 1,927,177 $ 511,470
Income tax rate   32.00% 32.00% 32.00%
Expected income tax expense   $ 458,848 $ 616,697 $ 163,670
Special mining tax and mining royalties   (31,188) (46,366) (10,305)
Provision (gain) for uncertainty about treatments of income taxes   (19,667) (14,379) 1,313
Non - deductible expenses   13,608 14,609 16,925
Income tax true - ups   (11,831) 6,345 5,292
Moratorium interest   (741) 1,019 24,652
Income tax rate change effect on deferred taxes for change in Peruvian tax law once the current Stability Contract expires (from 32% to 30.85%)   1,117 840 (2,750)
Others   3,055 2,830 3,035
Aggregate current and deferred tax relating to items credited (charged) directly to equity   413,201 581,595 201,832
Mining taxes charged to results   88,224 144,895 32,203
Supplementary retirement fund charged to results   7,122 9,213 2,891
Tax expense (income), continuing operations   $ 508,547 $ 735,703 $ 236,926
Effective income tax   35.47% 38.18% 46.32%