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Borrowings - Summary of Short Term Borrowings (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 borrowings [line items] |  |  |
Less: financial liabilities for hedging - current | $ (6,716,965) | $ (242,140) | $ (5,277,325)
Short-term borrowings | 34,319,464 | 1,237,183 | 31,290,839
Short Term Bank Loans [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Secured bank loans, annual interest rates both were 0.90%-1.87% as of December 31, 2020 and 2021 | 203,127 | 7,322 | 300,495
Unsecured bank loans, annual interest rates were 0.58%-3.38% and 0.40%-3.75% as of December 31, 2020 and 2021, respectively | 40,833,302 | 1,472,001 | 34,297,362
Borrowings | 41,036,429 | 1,479,323 | 34,597,857
Less: financial liabilities for hedging - current | 6,716,965 | 242,140 | 3,307,018
Short-term borrowings | $ 34,319,464 | $ 1,237,183 | $ 31,290,839

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- Definition The amount of outstanding funds that the entity is obligated to repay. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of loans received from banks that have been secured by collateral. [Refer: Loans received] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard -URIDate 2021-03-24 + Details
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