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Operating Segment Information - Geographic Non-current Assets Information (Detail) - TWD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Disclosure of Geographical Areas [Line Items] |  |
Non-current assets | $ 300,825,264 | $ 260,306,236
Taiwan [member] |  |
Disclosure of Geographical Areas [Line Items] |  |
Non-current assets | 143,009,330 | 158,066,796
Singapore [member] |  |
Disclosure of Geographical Areas [Line Items] |  |
Non-current assets | 107,247,569 | 55,322,448
China (includes Hong Kong) [member] |  |
Disclosure of Geographical Areas [Line Items] |  |
Non-current assets | 38,271,386 | 33,424,815
Japan [member] |  |
Disclosure of Geographical Areas [Line Items] |  |
Non-current assets | 12,235,336 | 13,415,669
Others [member] |  |
Disclosure of Geographical Areas [Line Items] |  |
Non-current assets | $ 61,643 | $ 76,508

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- Definition The amount of non-current assets other than financial instruments, deferred tax assets, post-employment benefit assets and rights arising under insurance contracts. [Refer: Deferred tax assets; Classes of financial instruments [domain]; Non-current assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 33 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_33_b&doctype=Standard -URIDate 2024-03-27 + Details
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