Inventories - Summary of Inventories (Details) - CAD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Inventories [Abstract]
Supplies	$ 1,235	$ 1,318
Raw materials	260	277
Work in process	774	1,046
Finished products	636	655
Inventories	2,905	3,296
Less non-current portion (Note 20)	(307)	(350)
Current inventories	$ 2,598	$ 2,946

The amount of assets: (a) held for sale in the ordinary course of business; (b) in the process of production for such sale; or (c) in the form of materials or supplies to be consumed in the production process or in the rendering of services. Inventories encompass goods purchased and held for resale including, for example, merchandise purchased by a retailer and held for resale, or land and other property held for resale. Inventories also encompass finished goods produced, or work in progress being produced, by the entity and include materials and supplies awaiting use in the production process. [Refer: Current finished goods; Current merchandise; Current work in progress; Land]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 54
-Subparagraph g
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_g&doctype=Standard
-URIDate 2024-03-27

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