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Income Tax - Summary of Unused Loss Carry-forward (Detail) - Dec. 31, 2024 $ in Thousands, $ in Thousands | TWD ($) | USD ($)
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Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused loss carry-forward | $ 3,209,728 | $ 97,888
2025 [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused loss carry-forward | 217,721 | 6,640
2026 [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused loss carry-forward | 271,741 | 8,287
2027 [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused loss carry-forward | 355,338 | 10,837
2028 [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused loss carry-forward | 239,156 | 7,293
2029 and thereafter [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused loss carry-forward | $ 2,125,772 | $ 64,831

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- Definition The amount of deferred tax liabilities net of deferred tax assets, when the absolute amount of deferred tax liabilities is greater than the absolute amount of deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 12 -IssueDate 2024-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_g_i&doctype=Standard -URIDate 2024-03-27 + Details
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