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Summary of material accounting policy information - Schedule of Exchange Rates (Details) | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
U.S. Dollar |  |  |
Disclosure In Tabular Form Of Foreign Exchange Rates Used For Translation [Line Items] |  |  |
Closing foreign exchange rate | 1.175 | 1.039 | 1.105
Average foreign exchange rate | 1.130 | 1.082 | 1.081
Swiss Franc |  |  |
Disclosure In Tabular Form Of Foreign Exchange Rates Used For Translation [Line Items] |  |  |
Closing foreign exchange rate | 0.931 | 0.941 | 0.926
Average foreign exchange rate | 0.937 | 0.953 | 0.972
Chinese Renminbi |  |  |
Disclosure In Tabular Form Of Foreign Exchange Rates Used For Translation [Line Items] |  |  |
Closing foreign exchange rate | 8.226 | 7.583 | 7.851
Average foreign exchange rate | 8.119 | 7.787 | 7.660
Pound Sterling |  |  |
Disclosure In Tabular Form Of Foreign Exchange Rates Used For Translation [Line Items] |  |  |
Closing foreign exchange rate | 0.873 | 0.829 | 0.869
Average foreign exchange rate | 0.857 | 0.847 | 0.870
Hong Kong Dollar |  |  |
Disclosure In Tabular Form Of Foreign Exchange Rates Used For Translation [Line Items] |  |  |
Closing foreign exchange rate | 9.146 | 8.069 | 8.631
Average foreign exchange rate | 8.810 | 8.445 | 8.465
Singapore Dollar |  |  |
Disclosure In Tabular Form Of Foreign Exchange Rates Used For Translation [Line Items] |  |  |
Closing foreign exchange rate | 1.511 | 1.416 | 1.459
Average foreign exchange rate | 1.476 | 1.446 | 1.452
United Arab Emirates Dirham |  |  |
Disclosure In Tabular Form Of Foreign Exchange Rates Used For Translation [Line Items] |  |  |
Closing foreign exchange rate | 4.315 | 3.815 | 4.058
Average foreign exchange rate | 4.150 | 3.975 | 3.971
Japanese Yen |  |  |
Disclosure In Tabular Form Of Foreign Exchange Rates Used For Translation [Line Items] |  |  |
Closing foreign exchange rate | 184.090 | 163.060 | 156.330
Average foreign exchange rate | 169.043 | 163.852 | 151.990
South Korean Won |  |  |
Disclosure In Tabular Form Of Foreign Exchange Rates Used For Translation [Line Items] |  |  |
Closing foreign exchange rate | 1,696.94 | 1,532.15 | 1,433.66
Average foreign exchange rate | 1,605.452 | 1,475.404 | 1,412.88

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- Definition The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard -URIDate 2025-03-27 + Details
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