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Decommissioning Liabilities (Tables)

12 Months Ended

Dec. 31, 2023

Asset Retirement Obligation Disclosure1 [Abstract]

Schedule of Change in Asset Retirement Obligation

Balance – current and non-current portion December 31, 2021			$106.1
Reclamation expenditures			(0.4)
Accretion expense			4.2
Revisions to expected discounted cash flows			6.7
Balance – current and non-current portion December 31, 2022			$116.6
Liability assumed on Manitou acquisition (note 8)			1.8
Reclamation expenditures			(0.3)
Accretion expense			6.8
Revisions to expected discounted cash flows1			11.9
Balance – current and non-current portion December 31, 2023			$136.8
Less: Current portion of decommissioning liability			(12.6)
Balance – non-current portion December 31, 2023			$124.2

1.Included in the revisions to expected discounted cash flows are costs of $3.3 million related to closed sites with a corresponding expense recorded in Other Loss (note 14).

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Asset Retirement Obligation Disclosure1 [Abstract]

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The disclosure of other provisions. [Refer: Other provisions]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2023-01-01
-Paragraph 84
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2023-en-r&anchor=para_84&doctype=Standard
-URIDate 2023-03-23

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