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Goodwill (Details) - Goodwill - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets and goodwill, beginning balance | $ 1,108 | $ 1,118
Changes in foreign exchange rates | 36 | (10)
Sale of steelmaking coal business | (702) |
Intangible assets and goodwill, ending balance | 442 | 1,108
Steelmaking Coal Business |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets and goodwill, beginning balance | 702 | 702
Changes in foreign exchange rates | 0 | 0
Sale of steelmaking coal business | (702) |
Intangible assets and goodwill, ending balance | 0 | 702
Quebrada Blanca |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets and goodwill, beginning balance | 406 | 416
Changes in foreign exchange rates | 36 | (10)
Sale of steelmaking coal business | 0 |
Intangible assets and goodwill, ending balance | $ 442 | $ 406

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- Definition The decrease in intangible assets and goodwill resulting from disposals. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_ii&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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