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Finance Costs, Net (Details) - CAD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Finance Costs [Abstract] |  |  |  |
Interest Expense – Short-Term Borrowings and Long-Term Debt | $ 75 | $ 76 | $ 231 | $ 229
Interest Expense – Lease Liabilities (Note 11) | 43 | 40 | 126 | 119
Unwinding of Discount on Decommissioning Liabilities (Note 13) | 63 | 56 | 179 | 169
Other | 24 | 9 | 40 | 30
Capitalized Interest | (23) | (12) | (61) | (30)
Total finance costs | 182 | 169 | 515 | 517
Interest income | (28) | (51) | (111) | (123)
Finance costs | $ 154 | $ 118 | $ 404 | $ 394

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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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