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Mining concessions, development costs, right-of-use asset, property, plant and equipment, net - Sensitivity analysis (Details) - Minera Yanacocha SRL and subsidiary [Member] $ in Millions | Dec. 31, 2020 USD ($)
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Yanacocha |
Property, plant and equipments,net [Line Items] |
Percentage of reasonably possible increase in WACC used in the determination of CGU's recoverable amounts | 0.50%
Percentage of reasonably possible decrease in WACC used in the determination of CGU's recoverable amounts | (0.50%)
Yanacocha | Discount rate, Bottom of range |
Property, plant and equipments,net [Line Items] |
Discount rate used in current estimate of fair value | 8.90%
Increase (decrease) in CGU's recoverable amount due to reasonably possible increase in WACC used | $ 125.0
Increase (decrease) in CGU's recoverable amount due to reasonably possible decrease in WACC used | $ (14.0)
Yanacocha | Discount rate, Top of range |
Property, plant and equipments,net [Line Items] |
Discount rate used in current estimate of fair value | 9.40%
Increase (decrease) in CGU's recoverable amount due to reasonably possible increase in WACC used | $ 54.5
Increase (decrease) in CGU's recoverable amount due to reasonably possible decrease in WACC used | $ (77.0)
Conga |
Property, plant and equipments,net [Line Items] |
Percentage of reasonably possible increase in WACC used in the determination of CGU's recoverable amounts | 0.50%
Percentage of reasonably possible decrease in WACC used in the determination of CGU's recoverable amounts | (0.50%)
Conga | Discount rate, Bottom of range |
Property, plant and equipments,net [Line Items] |
Discount rate used in current estimate of fair value | 9.40%
Increase (decrease) in CGU's recoverable amount due to reasonably possible increase in WACC used | $ 132.0
Increase (decrease) in CGU's recoverable amount due to reasonably possible decrease in WACC used | $ (33.0)
Conga | Discount rate, Top of range |
Property, plant and equipments,net [Line Items] |
Discount rate used in current estimate of fair value | 10.40%
Increase (decrease) in CGU's recoverable amount due to reasonably possible increase in WACC used | $ (30.0)
Increase (decrease) in CGU's recoverable amount due to reasonably possible decrease in WACC used | $ (158.0)

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