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Finance Costs - Schedule of Finance Costs (Detail) - CAD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Finance Costs [Abstract] |  |  |  |  |
Interest Expense – Short-Term Borrowings and Long-Term Debt |  | $ 76 | $ 94 | $ 229 | $ 285
Net Premium (Discount) on Redemption of Long-Term Debt |  | 0 | (84) | 0 | (84)
Interest Expense – Lease Liabilities (Note 11) |  | 40 | 41 | 119 | 121
Unwinding of Discount on Decommissioning Liabilities (Note 14) |  | 56 | 55 | 169 | 165
Other |  | 9 | 5 | 30 | 18
Capitalized Interest |  | (12) | (5) | (30) | (12)
Total finance costs |  | 169 | 106 | 517 | 493
Interest income |  | (51) | (33) | (123) | (100)
Finance costs | [1] | $ 118 | $ 73 | $ 394 | $ 393
[1] | Revised presentation as of January 1, 2024. See Note 3.

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- References No definition available. + Details
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- Definition Finance Costs, Including Capitalized Interest + References No definition available. + Details
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- Definition Net premium (discount) on redemption of long-term debt. + References No definition available. + Details
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- Definition The amount of expense recognised due to the unwinding of the discount on provisions other than provisions for employee benefits, resulting from the effect of the passage of time. [Refer: Other provisions] + 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 The amount of costs associated with financing activities of the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 82 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82_b&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of interest expense on borrowings. [Refer: Interest expense; Borrowings] + 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 The amount of finance costs that the entity does not separately disclose in the same statement or note. [Refer: Finance costs] + 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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