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.

No definition available.

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- Definition

The increase (decrease) in a deferred tax liability (asset). [Refer: Deferred tax liability (asset)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-URIDate 2025-03-27

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- References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
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-URIDate 2025-03-27

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- Definition

Total amount of repayments of the long-term loans which were classified as non-current liabilities.

+ References

No definition available.

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Significant Subsequent Events - Additional Information (Detail) - TWD ($) $ in Millions		1 Months Ended	4 Months Ended
	Feb. 13, 2026	Jan. 31, 2026	Apr. 30, 2026
Non Adjusting Events After Reporting Period [Member]
Disclosure of subsidiaries [line items]
Total amount of repayments of the long-term loans which were classified as non-current liabilities			$ 1,839
Purchase Of Interests In Associates [member] \| Unimicron Technology Corp [Member]
Disclosure of subsidiaries [line items]
Purchase of interests in associates		$ 643
Changes in tax rates or tax laws enacted or announced [member]
Disclosure of subsidiaries [line items]
Increase in deferred tax assets	$ 1,947