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Financial Instruments - Summary of Detailed Information About Hedges Items (Detail) $ in Thousands, $ in Thousands | 12 Months Ended |
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Dec. 31, 2024 TWD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 TWD ($) | Dec. 31, 2024 USD ($)
Borrowings denominated in foreign currencies [member] |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |
Hedged item, assets | $ 2,834,608 |  | $ 2,011,050 | $ 86,447
Fair value hedge of borrowings denominated in foreign currencies [member] |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |
Change in Value Used for Calculating Hedge Ineffectiveness, Hedging Instrument | (243,954) | $ (7,440) | 7,493 |
Hedged item, assets | 243,954 |  | (7,493) | 7,440
Accumulated Amount of Fair Value Hedge Adjustments on Hedged Item, Asset | 323,983 |  | 80,029 | 9,881
Hedges of net investment in foreign operations [member] |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |
Change in Value Used for Calculating Hedge Ineffectiveness, Hedging Instrument | (562,598) | $ (17,158) | 312,029 |
Hedged item, assets | 562,598 |  | (312,029) | 17,158
Accumulated Gains or Losses in Other Equity, Continuing Hedges | $ 923,574 |  | $ 360,976 | $ 28,166

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- Definition Accumulated gain loss in other equity continuing hedges. + References No definition available. + Details
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- Definition Gain Loss On Change In Fair Value Of Hedged Item Assets. + References No definition available. + Details
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- Definition The accumulated amount of fair value hedge adjustment on a hedged item that is included in the carrying amount of the hedged item, recognised in the statement of financial position as an asset. [Refer: Hedged items [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 24B -Subparagraph a -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24B_a_ii&doctype=Standard -URIDate 2024-03-27 + Details
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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. + Details
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- Definition The gain (loss) on the change in fair value of the hedging instrument used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 24A -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24A_c&doctype=Standard -URIDate 2024-03-27 + Details
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