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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, 2021 | Dec. 31, 2020
DSU [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Number of units, beginning of period | 408,564 | 325,207
Number of units, granted | 64,720 | 97,995
Number of units reinvested dividends | 5,185 | 5,558
Number of units, settled | (102,266) | (20,196)
Number of units, forfeited | 0 | 0
Number of units, end of period | 376,203 | 408,564
Number of units, vested | 311,010 | 309,862
RSU [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Number of units, beginning of period | 1,242,902 | 1,190,038
Number of units, granted | 293,610 | 504,560
Number of units reinvested dividends | 15,102 | 17,143
Number of units, settled | (398,173) | (365,399)
Number of units, forfeited | (275,044) | (103,440)
Number of units, end of period | 878,397 | 1,242,902
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 2021-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2021-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45&doctype=Standard -URIDate 2021-03-24 + 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 2021-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45&doctype=Standard -URIDate 2021-03-24 + 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 2021-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2021-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45&doctype=Standard -URIDate 2021-03-24 + Details
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