Income Taxes - Summary of Net Deferred Income Tax Liability (Details) - CAD ($) $ in Millions |
12 Months Ended | ||
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Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Reconciliation of changes in deferred tax liability (asset) [abstract] | |||
| Balance – beginning of year | $ 10,539 | $ 10,183 | $ 10,114 |
| Deferred income tax expense | 510 | 422 | 53 |
| Foreign exchange adjustments | 52 | (66) | 16 |
| Acquisitions | 188 | 0 | 0 |
| Balance – end of year | $ 11,289 | $ 10,539 | $ 10,183 |
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The increase (decrease) in deferred tax liability (asset) resulting from business combinations. [Refer: Deferred tax liability (asset)] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The increase (decrease) in deferred tax liability (asset) resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Deferred tax liability (asset)] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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