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v3.25.3

Divestiture (Details) $ in Millions, $ in Billions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 CAD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2025 CAD ($) | Sep. 30, 2024 CAD ($) | Sep. 30, 2025 CAD ($) | Sep. 30, 2024 CAD ($)
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |  |  |
Before-tax gain on disposal |  |  | $ 106 | $ 17 | $ 109 | $ 121
Deferred tax expense income | $ 315 |  |  |  |  |
WRB Refining LP |  |  |  |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |  |  |
Share of equity investment | 50.00% | 50.00% |  |  |  |
Proceeds from disposal of oil and gas assets | $ 1,800 | $ 1.3 |  |  |  |
Before-tax gain on disposal | 106 |  |  |  |  |
Cash and cash equivalents in subsidiary or businesses acquired or disposed | 3,000 |  |  |  |  |
Assets other than cash or cash equivalents in subsidiary or businesses acquired or disposed | $ (1,300) |  |  |  |  |

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