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Tax situation - Income tax provision (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure Of Income Tax Explanatory      
Current income tax expense $ 20,375 $ 9,924 $ 11,911
Deferred tax expense (income) (44,046) 15,506 (37,501)
Income tax expense (benefit) (23,671) 25,430 (25,590)
Minera Yanacocha SRL and subsidiary [Member]      
Disclosure Of Income Tax Explanatory      
Current Peruvian tax returns 40,590 51,197 42,978
Royalties and mining taxes 9,196 5,065 11,444
Income tax from prior years (refunds)/payments (98) (1,712) 8,459
Other taxes 320 1,363 993
Income tax prior years refunds   (2,895) (3,002)
Fines from prior years     4,056
Current income tax expense 50,008 53,018 64,928
Deferred tax expense (income) 1,021 (1,071)  
Income tax expense (benefit) $ 51,029 $ 53,018 $ 64,928