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Financial Instruments - Summary of Detailed Information About Hedges (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2021 TWD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 TWD ($)
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Disclosure of detailed information about hedges [line items] |  |  |
Financial liabilities for hedging – current | $ 6,716,965 | $ 242,140 | $ 5,277,325
Fair value hedge of borrowings denominated in foreign currencies [member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Financial liabilities for hedging – current | 2,954,921 | 106,522 | 3,307,018
Current Financial Assets For Hedging – current | 0 | 0 | 0
Hedges of net investment in foreign operations [member] |  |  |
Disclosure of detailed information about hedges [line items] |  |  |
Financial liabilities for hedging – current | 3,762,044 | 135,618 | 1,970,307
Financial liabilities for hedging – non-current | 4,780,931 | 172,348 | 5,910,919
Current Financial Assets For Hedging – current | 0 | 0 | 0
Non Current Financial Assets For Hedging – non-current | $ 0 | $ 0 | $ 0

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- Definition Current Financial Assets For Hedging. + References No definition available. + Details
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- Definition Current financial liabilities for hedging. + References No definition available. + Details
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- Definition Non Current Financial Assets For Hedging. + References No definition available. + Details
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- Definition Non current financial liabilities for hedging. + References No definition available. + 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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- Details
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- Details
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