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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

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

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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

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