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Income Taxes - Additional Information (Details) $ in Millions	Sep. 30, 2025 CAD ($)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax expense income	$ 315
WRB Refining LP
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Share of equity investment	50.00%

X

- Definition

The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities]

+ References

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+ References

No definition available.

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- Definition

The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Total for all joint ventures [member]]

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