Leases - Schedule of Lease Liabilities (Details) - CAD ($) $ in Millions |
12 Months Ended | ||
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Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Lease liabilities [abstract] | |||
| Expenses relating to short-term leases | $ 306 | $ 337 | |
| Interest expense on lease liabilities | 74 | 69 | $ 64 |
| Variable lease payments not included in the measurement of lease liabilities | 24 | 59 | |
| Total cash outflows for leases | 1,458 | 1,333 | |
| Increase through capitalization of short-term leases, property, plant and equipment | $ 693 | $ 543 | |
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- Definition Increase Through Capitalization Of Short-Term Leases, Property, Plant And Equipment No definition available.
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- Definition The cash outflow for leases. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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