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Decommissioning Liabilities (Tables)

12 Months Ended

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 flows1			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 flows1			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

Asset Retirement Obligation Disclosure1 [Abstract]

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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

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