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Inventory - Components of Inventory (Details) - CAD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Disclosure of inventories [Abstract]
Parts, materials and supplies	$ 85	$ 72
Coal	27	38
Emission credits	18	45
Natural gas	4	2
Total	$ 134	$ 157

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- Definition

A classification of current inventory representing the amount of fuel. [Refer: Inventories]

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A classification of current inventory representing the amount of a naturally occurring hydrocarbon gas mixture. [Refer: Inventories]

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