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Consolidated statements of other comprehensive income - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Statement of comprehensive income [Line Items]      
Net profit (loss) $ (150,339) $ (28,459) $ (11,654)
Other comprehensive income (loss) to be reclassified to profit or loss in subsequent periods      
Net change in unrealized gain (loss) on cash flow hedges, note 32 (18,439) (2,759) 31,464
Income tax effect,note 28(a) 5,440 813 (9,916)
Unrealized gain on investments 264 (291) 1,053
Other comprehensive profit (loss) (12,735) (2,237) 22,601
Total other comprehensive profit (loss), net of income tax (163,074) (30,696) 10,947
Attributable to:      
Equity holders of the parent (143,933) (12,816) (260)
Non-controlling interests (19,141) (17,880) 11,207
Other comprehensive profit (loss): (163,074) (30,696) 10,947
Minera Yanacocha SRL and subsidiary [Member]      
Statement of comprehensive income [Line Items]      
Net profit (loss) (165,449) (95,257) (81,517)
Other comprehensive income (loss) to be reclassified to profit or loss in subsequent periods      
Fair value of financial instruments 123 1,246 (91)
Other comprehensive profit (loss) 123 1,246 (91)
Total other comprehensive profit (loss), net of income tax (165,326) (94,011) (81,608)
Attributable to:      
Other comprehensive profit (loss): (165,326) (94,011) (81,608)
Sociedads Minera Cerro Verde Saa [Member]      
Statement of comprehensive income [Line Items]      
Net profit (loss) $ 274,544 $ 390,377 $ 119,710