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Share-based compensation - Performance-Based Restricted stock units - Changes in the PRSUs (Details) | 12 Months Ended
--- | ---
Dec. 31, 2024 D shares | Dec. 31, 2023 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of trading days | D | 30 |
PRSUs |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Balance as at the beginning | 38,713 |
PRSUs granted (in shares) | 47,894 | 38,713
Balance as at the end (none of which are vested) | 86,607 | 38,713
PRSUs | Minimum [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Total quantity of PRSUs eligible to vest (as a percentage) | 0.00% |
PRSUs | Maximum [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Total quantity of PRSUs eligible to vest (as a percentage) | 200.00% |

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- Definition The percentage of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References No definition available. + Details
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- Definition Threshold number of trading days taken to determine total shareholder return under a share based payment arrangement. + References No definition available. + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Line items represent financial concepts included in a table. 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