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Identification and business activity - Results of the discontinued operations (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Operating income      
Sales of goods $ 863,470,000 $ 637,619,000 $ 821,930,000
Cost of sales (813,106,000) (652,613,000) (799,582,000)
Gross profit (loss) (87,344,000) (23,929,000) (68,306,000)
Operating income (expenses), net      
Reversal (provision) of contingent and others (2,687,000) (4,150,000) 2,968,000
Administrative expenses (67,585,000) (67,185,000) (76,297,000)
Depreciation and amortization, note 11(h) 187,211,000 189,620,000 226,335,000
Total operating expenses, net (153,302,000) (105,203,000) (122,694,000)
Operating loss 65,958,000 81,274,000 54,388,000
Other income (expense), net      
Finance costs, note 15(b) (60,629,000) (37,822,000) (42,173,000)
Net gain (loss) from currency exchange difference 18,686,000 4,116,000 734,000
Income tax from discontinued operations (41,414,000) 0  
Loss from discontinued operations $ 387,604,000 $ 66,810,000 $ 52,094,000
Loss per basic share $ (1.53) $ (0.26) $ (0.21)
Loss from the discontinued operations, per diluted share, express in U.S. dollars $ (1.53) $ (0.26) $ (0.21)
Discontinued Operations Mining Activities [Member]      
Operating income      
Sales of goods $ 0 $ (1,000) $ 97,000
Cost of sales 0 0 (2,000)
Gross profit (loss) 0 (1,000) 95,000
Operating income (expenses), net      
Discontinued operation of Yanacocha (422,394,000) (72,219,000) (41,580,000)
Changes in provision for closure of mining units (3,021,000) (58,000) (1,912,000)
Reversal (provision) of contingent and others (2,136,000) 13,000 (134,000)
Changes in environmental liabilities provision (1,014,000) 0 0
Administrative expenses (335,000) (1,117,000) (8,009,000)
Depreciation and amortization, note 11(h) (14,000) (2,126,000) (39,000)
Income from sale of development costs, property, plant and equipment (sale of Mallay mining unit) 0 7,976,000 0
Reversal of provision for closure of mining unit (sale of Mallay mining unit), nota 15(b) 0 5,093,000 0
Reversal of provision for impairment of value of inventory (sale of Mallay mining unit), note 8(c) 0 1,220,000 0
Income from sale of supplies (sale of Mallay mining unit) 0 606,000 0
Cost of sale of development costs, property, plant and equipment, nota 11(a) 0 (3,099,000) (44,000)
Cost of sale of supplies (sale of Mallay mining unit) 0 (1,711,000) 0
Impairment of value of inventory, note 8(c) 0 (377,000) (320,000)
Others, net (79,000) (846,000) 117,000
Total operating expenses, net (428,993,000) (66,645,000) (51,921,000)
Operating loss (428,993,000) (66,646,000) (51,826,000)
Other income (expense), net      
Finance costs, note 15(b) (25,000) (176,000) (266,000)
Net gain (loss) from currency exchange difference 0 12,000 (2,000)
Loss before income tax (429,018,000) (66,810,000) (52,094,000)
Income tax from discontinued operations 41,414,000 0 0
Loss from discontinued operations $ (387,604,000) $ (66,810,000) $ (52,094,000)