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Share Capital and Warrants - Issued and Outstanding - Warrants (Details) - Common Share Warrants - CAD ($) shares in Thousands, $ in Millions |  | 12 Months Ended
--- | --- | ---
Jun. 14, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Number of Warrants |  |  |
Outstanding, beginning of year (in shares) |  | 55,720 | 65,119
Exercised (in shares) |  | (2,610) | (9,399)
Purchases and cancelled (in shares) | (45,500) | (45,485) | 0
Outstanding, end of year (in shares) |  | 7,625 | 55,720
Amount |  |  |
Outstanding, Beginning of Year |  | $ 184 | $ 215
Issued Upon Exercise of Warrants |  | (8) | (31)
Purchased and Cancelled | $ (711) | (151) | 0
Outstanding, End of Year |  | $ 25 | $ 184

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- Definition The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_79_a_iv&doctype=Standard -URIDate 2023-03-23 + Details
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