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Derivative instruments - Derivative assets and liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Foreign exchange forward contracts |  |
Derivative instruments [Line Items] |  |
Derivative assets | $ (5.3) | $ 3.2
Derivative (liabilities) | 0.1 | (1.1)
Unsettled provisionally priced concentrate derivatives, and swap contracts |  |
Derivative instruments [Line Items] |  |
Derivative (liabilities) | $ 1.2 | $ (0.3)

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- Definition The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition Derivative instruments. + References No definition available. + Details
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- Details
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- Details
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