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Decommissioning Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2024
Asset Retirement Obligation Disclosure1 [Abstract] |
Schedule of Change in Asset Retirement Obligation |
Current and non-current portion December 31, 2022 | $116.6
Liability assumed on Manitou acquisition (Note 9) | 1.8 |
Reclamation expenditures | (0.3) |
Accretion expense | 6.8 |
Revisions to expected discounted cash flows 1 | 11.9
Current and non-current portion December 31, 2023 | $136.8
Liability assumed on Argonaut acquisition (Note 6) | 18.0 |
Reclamation expenditures | (10.6) |
Accretion expense | 8.9 |
Revisions to expected discounted cash flows 1 | 2.8
Foreign exchange revaluation | (4.3) |
Current and non-current portion December 31, 2024 | $151.6
Less: Current portion of decommissioning liability | (6.5)
Non-current portion December 31, 2024 | $145.1
1. Included in the revisions to expected discounted cash flows for the year ended December 31, 2024 are costs of $0.2 million related to closed sites with a corresponding expense recorded in Other Loss (Note 20) (year ended December 31, 2023 - $3.3 million).

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- Definition The disclosure of other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2024-01-01 -Paragraph 84 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_84&doctype=Standard -URIDate 2024-03-27 + Details
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