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Decommissioning and Other Provisions - Current and Non-Current Portion of Decommissioning and Other Provisions (Details) - CAD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]
Current portion	$ 35	$ 70
Non-current portion	654	659
Balance	$ 689	$ 729	$ 827

X

- Definition

The amount of non-current provisions other than provisions for employee benefits. [Refer: Non-current provisions]

+ References

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- Definition

The amount of provisions other than provisions for employee benefits. [Refer: Provisions]

+ References

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- Definition

The amount of current provisions other than provisions for employee benefits. [Refer: Provisions]

+ References

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- Definition

Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]

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