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Employee Defined Benefit Plans - Schedule of Employee Defined Benefit Plans (Details) - CAD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Jan. 01, 2023
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Disclosure of defined benefit plans [line items] |  |  |
Net employee defined benefit asset | $ 75.0 | $ 72.3 | $ 57.4
Net employee defined benefit liability | (22.4) | (29.5) | $ (32.3)
Pension defined benefit plans |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Net employee defined benefit asset | 75.0 | 72.3 |
Net employee defined benefit liability | (6.4) | (15.6) |
Post employment benefit plans |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Net employee defined benefit liability | $ (16.0) | $ (13.9) |

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of non-current net defined benefit asset. [Refer: Net defined benefit asset] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of non-current net defined benefit liability. [Refer: Net defined benefit liability] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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- Details
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