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Capital Commitments - Additional Information (Detail) - CAD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Disclosure of capital commitments [Line Items] |  |
Commitments to purchase property, plant and equipment | $ 128 | $ 175
2025 [Member] |  |
Disclosure of capital commitments [Line Items] |  |
Commitments to purchase property, plant and equipment | 92 |
2026 [Member] |  |
Disclosure of capital commitments [Line Items] |  |
Commitments to purchase property, plant and equipment | 17 |
2027 [Member] |  |
Disclosure of capital commitments [Line Items] |  |
Commitments to purchase property, plant and equipment | $ 19 |

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- Definition The amount of future capital expenditures that the entity is committed to make. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition Line items representing capital commitments. + References No definition available. + Details
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- Details
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- Details
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- Details
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