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Share capital - Stock options excluded from the calculation of diluted loss per share (Details) - shares shares in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of classes of share capital [abstract] |  |
Stock options, performance share units, deferred share units excluded from the calculation of diluted loss per share (in shares) | 5.1 | 9.9

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- References No definition available. + Details
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- Definition Number of potential ordinary shares that are antidilutive in the period presented. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 33 -IssueDate 2023-01-01 -Paragraph 70 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2023-en-r&anchor=para_70_c&doctype=Standard -URIDate 2023-03-23 + Details
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