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Consolidated statements of other comprehensive income - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement of comprehensive income [Line Items]      
Net profit (loss) $ (28,459) $ (11,654) $ 64,435
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 (2,759) 31,464 (26,822)
Income tax effect 813 (9,916) 7,963
Unrealized gain on investments, net of income tax effect (291) 1,053 (427)
Other comprehensive profit (loss) (2,237) 22,601 (19,286)
Total other comprehensive profit (loss), net of income tax (30,696) 10,947 45,149
Attributable to:      
Equity holders of the parent (12,816) (260) 48,718
Non-controlling interests (17,880) 11,207 (3,569)
Total other comprehensive loss (30,696) 10,947 45,149
Minera Yanacocha SRL and subsidiary [Member]      
Statement of comprehensive income [Line Items]      
Net profit (loss) (95,257) (81,517) (175,454)
Other comprehensive income (loss) to be reclassified to profit or loss in subsequent periods      
Other comprehensive profit (loss) 1,246 (91) (3,244)
Total other comprehensive profit (loss), net of income tax (94,011) (81,608) (178,698)
Attributable to:      
Total other comprehensive loss (94,011) (81,608) (178,698)
Sociedads Minera Cerro Verde Saa [Member]      
Statement of comprehensive income [Line Items]      
Net profit (loss) $ 390,377 $ 119,710 $ 349,881