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Derivative instruments (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Derivative instruments [Line Items] |  |
Derivative assets |  | $ 0.9
Derivative (liabilities) | $ (1.1) |
Foreign exchange forward contracts |  |
Derivative instruments [Line Items] |  |
Derivative assets | 0.4 | 1.5
Fuel hedge swap contracts |  |
Derivative instruments [Line Items] |  |
Derivative assets | 0.3 | 0.0
Unsettled provisionally priced concentrate derivatives, and swap contracts |  |
Derivative instruments [Line Items] |  |
Derivative (liabilities) | $ (1.8) | $ (0.6)

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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 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + 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 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + 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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- Details
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