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Financial Risk and Fair Value Disclosures - Assets and Liabilities Not Recorded at Fair Value on a Recurring Basis But for Which Fair Value is Disclosed (Detail) - TWD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of fair value measurement of liabilities [line items] |  |
Bonds payables (current portion included) | $ 38,359,352 | $ 28,184,687
Long-term loans (current portion included) | 22,883,344 | 19,279,342
Not measured at fair value in statement of financial position but for which fair value is disclosed [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Bonds payables (current portion included) | 38,367,168 | 28,346,985
Long-term loans (current portion included) | 22,883,344 | 19,279,342
Not measured at fair value in statement of financial position but for which fair value is disclosed [member] | Level 1 [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Bonds payables (current portion included) | 32,827,211 | 22,916,330
Long-term loans (current portion included) | 0 | 0
Not measured at fair value in statement of financial position but for which fair value is disclosed [member] | Level 2 [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Bonds payables (current portion included) | 5,539,957 | 5,430,655
Long-term loans (current portion included) | 22,883,344 | 19,279,342
Not measured at fair value in statement of financial position but for which fair value is disclosed [member] | Level 3 [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Bonds payables (current portion included) | 0 | 0
Long-term loans (current portion included) | $ 0 | $ 0

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- Definition The amount of bonds issued by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of loans received. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard -URIDate 2023-03-23 + Details
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