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Investments Accounted for Using Equity Method - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2024 TWD ($)
Vanguard International Semiconductor Corporation [member]
Disclosure of associates [line items]
Amount of investment increased	$ 3,738.8

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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

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- Definition

The cash outflow for the purchase of interests in investments accounted for using the equity method. [Refer: Investments accounted for using equity method]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 16
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-URIDate 2024-03-27

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