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Supplemental cash flow information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
CHANGE IN NON-CASH OPERATING WORKING CAPITAL |  |
Trade and other receivables | $ (8.8) | $ (4.1)
Inventories | 2.8 | (6.5)
Prepaid expenses and other | (8.3) | (1.8)
Trade and other payables | (1.7) | 6.6
Total change in non-cash operating working capital | (16.0) | (5.8)
OTHER NON-CASH ADJUSTMENTS |  |
Loss (gain) on revaluation of foreign exchange forward contracts and fuel hedge swap contracts | 7.4 | (1.4)
Unrealized (gain) loss on provisionally priced concentrate contracts | (1.2) | 0.3
Equity settled share-based payment expense | 0.6 | 0.8
Gain on extinguishment of New Afton free cash flow interest obligation (Note 10) | (42.3) | 0.0
Loss on disposal of assets | 0.9 | 0.3
Unrealized loss on revaluation of non-current derivative financial instruments | 130.6 | 108.1
Loss on revaluation of CSP’s reclamation and closure cost obligation | 0.0 | 0.5
Inventory net realizable value (write-up) write-down (Note 7) | (16.4) | 0.7
Loss on revaluation of investments | 0.9 | 4.4
Total other non-cash adjustments | $ 80.6 | $ 113.7

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- Definition The amount of expense arising from equity-settled share-based payment transactions in which the goods or services received did not qualify for recognition as assets. [Refer: Expense from share-based payment transactions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 51 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_51_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The gains (losses) on disposals of other non-current assets. [Refer: Other non-current assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 98 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount recognised resulting from the write-down of inventories to net realisable value or reversals of those write-downs. [Refer: Inventories] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 98 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_a&doctype=Standard -URIDate 2024-03-27 + Details
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