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Goodwill | 12 Months Ended
--- | ---
Dec. 31, 2023
Intangible Assets [Abstract] |
Goodwill | 18. Goodwill
(CAD$ in millions) |  | Steelmaking Coal Operations |  | Quebrada Blanca |  | Total
January 1, 2022 |  | $ | 702 |  |  | $ | 389 |  |  | $ | 1,091 |
Changes in foreign exchange rates |  | — |  |  | 27 |  |  | 27 |
December 31, 2022 |  | $ | 702 |  |  | $ | 416 |  |  | $ | 1,118 |
Changes in foreign exchange rates |  | — |  |  | (10) |  |  | (10) |
December 31, 2023 |  | $ | 702 |  |  | $ | 406 |  |  | $ | 1,108 |
The results of our annual goodwill impairment analysis and key assumptions used are outlined in Note 9(a) for the steelmaking coal group of CGUs and Note 9(c) and (d) for the Quebrada Blanca CGU.

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- Definition The disclosure of goodwill. [Refer: Goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 10 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_10_e&doctype=Standard -URIDate 2023-03-23 + Details
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