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Income tax expense/(credit) - Narrative (Details) - subsidiary | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Income Tax Disclosure [Line Items] |  |  |
Number of subsidiaries under two-tiered profit tax rate regime | 1 | 1 |
Hong Kong |  |  |
Income Tax Disclosure [Line Items] |  |  |
Applicable tax rate (%) | 16.50% | 16.50% | 16.50%
The United States |  |  |
Income Tax Disclosure [Line Items] |  |  |
Applicable tax rate (%) | 21.00% |  |

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- Definition The applicable income tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2025-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 194 -Subparagraph c -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_c_ii&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 194 -Subparagraph c -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_c_ii&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition Income Tax Disclosure + References No definition available. + Details
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- Definition Number Of Subsidiaries Under Two-Tiered Profit Tax Rate Regime + References No definition available. + Details
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- Details
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- Details
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