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Inventory - Schedule of Inventory (Details) - CAD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Inventories [Abstract]
Product inventory	$ 986	$ 546
Materials, supplies and other	1,807	1,488
Total inventory	$ 2,793	$ 2,034

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Current Raw Materials, Current Production Supplies And Other

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Inventories [Abstract]

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- Definition

A classification of current inventory representing the amount of unrefined, unprocessed oil. [Refer: Inventories]

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The amount of current inventories. [Refer: Inventories]

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