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Derivative financial instruments - Embedded derivatives (Details) item in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) item | Dec. 31, 2019 USD ($) item
Copper concentrate [Member] | Minimum |  |
Disclosure Of Embedded derivatives [Line Items] |  |
Forward pricing |  | 2.793
Copper concentrate [Member] | Maximum |  |
Disclosure Of Embedded derivatives [Line Items] |  |
Forward pricing |  | 2.804
Sociedad Minera Cerro Verde S.A.A. [Member] |  |
Disclosure Of Embedded derivatives [Line Items] |  |
Derivative financial asset liabilities | $ 101,434,000 | $ 36,705,000
Sociedad Minera Cerro Verde S.A.A. [Member] | Copper concentrate [Member] |  |
Disclosure Of Embedded derivatives [Line Items] |  |
Quantity of Metal | item | 267,872 | 246,441
Embedded derivatives, maturity | January 2021 to May 2021 | January 2020 to May 2020
Derivative financial asset liabilities | $ 98,424,000 | $ 39,727,000
Sociedad Minera Cerro Verde S.A.A. [Member] | Copper concentrate [Member] | Minimum |  |
Disclosure Of Embedded derivatives [Line Items] |  |
Provisional pricing | $ 2.908 | 2.567
Forward pricing | 3.519 |
Sociedad Minera Cerro Verde S.A.A. [Member] | Copper concentrate [Member] | Maximum |  |
Disclosure Of Embedded derivatives [Line Items] |  |
Provisional pricing | $ 3.545 | $ 2.774
Forward pricing | 3.524 |
Sociedad Minera Cerro Verde S.A.A. [Member] | Copper cathode [Member] |  |
Disclosure Of Embedded derivatives [Line Items] |  |
Quantity of Metal | item | 3,964 | 4,410
Embedded derivatives, maturity | January 2021 | January 2020
Provisional pricing |  | $ 2.791
Forward pricing | 3.519 | 2.793
Derivative financial asset liabilities | $ (235,000) | $ 9,000
Sociedad Minera Cerro Verde S.A.A. [Member] | Copper cathode [Member] | Minimum |  |
Disclosure Of Embedded derivatives [Line Items] |  |
Provisional pricing | 3.535 |
Sociedad Minera Cerro Verde S.A.A. [Member] | Copper cathode [Member] | Maximum |  |
Disclosure Of Embedded derivatives [Line Items] |  |
Provisional pricing | $ 3.612 |
Sociedad Minera Cerro Verde S.A.A. [Member] | Molybdenum [Member] |  |
Disclosure Of Embedded derivatives [Line Items] |  |
Quantity of Metal | item | 3,382 | 5,370
Embedded derivatives, maturity | January 2021 to February 2021 | January 2020 to February 2020
Forward pricing | 8.658 | 8.025
Derivative financial asset liabilities | $ 3,245,000 | $ (3,031,000)
Sociedad Minera Cerro Verde S.A.A. [Member] | Molybdenum [Member] | Minimum |  |
Disclosure Of Embedded derivatives [Line Items] |  |
Provisional pricing | 7.360 | 7.857
Sociedad Minera Cerro Verde S.A.A. [Member] | Molybdenum [Member] | Maximum |  |
Disclosure Of Embedded derivatives [Line Items] |  |
Provisional pricing | $ 7.884 | $ 9.724

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- Definition The amount of derivative financial assets(liabilities) + References No definition available. + Details
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- Definition The provisional pricing quotation received from suppliers. + References No definition available. + Details
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