Share Capital and Capital Surplus and Others - Details of Shares Outstanding (Detail) - shares	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of number of shares outstanding [abstract]
Issued shares	214,790,053	214,790,053
Treasury shares	1,807,778	1,903,711	6,133,414
Outstanding shares	212,982,275	212,886,342	212,699,730	218,032,053

The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
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-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
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-Subparagraph a
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2027-01-01
-Name IAS
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-IssueDate 2025-01-01
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