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Decommissioning Liabilities (Tables) | 12 Months Ended
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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 flows 1 | 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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- Definition The disclosure of other provisions. [Refer: Other provisions] + References 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 + Details
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