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Share-based compensation - Disclosure of deferred and restricted share units (Details) - shares | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
DSU [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Number of units, beginning of period | 376,203 | 408,564
Number of units, granted | 78,200 | 64,720
Number of units reinvested dividends | 6,018 | 5,185
Number of units, settled | (30,846) | (102,266)
Number of units, forfeited | 0 | 0
Number of units, end of period | 429,575 | 376,203
Number of units, vested | 350,822 | 311,010
RSU [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Number of units, beginning of period | 878,397 | 1,242,902
Number of units, granted | 275,520 | 293,610
Number of units reinvested dividends | 13,483 | 15,102
Number of units, settled | (278,806) | (398,173)
Number of units, forfeited | (35,791) | (275,044)
Number of units, end of period | 852,803 | 878,397
Number of units, vested | 0 | 0

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_47_b&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The number of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The number of other equity instruments (ie other than share options) forfeited in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45&doctype=Standard -URIDate 2022-03-24 + Details
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