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Borrowings - Summary of Bank Loans (Detail) $ in Thousands, $ in Thousands	Dec. 31, 2024 TWD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 TWD ($)
Disclosure of detailed information about borrowings [line items]
Less: current portion	$ 3,884,906	$ 118,478	$ 4,096,255
Noncurrent portion	121,750,192	3,713,028	81,364,448
Bank loans [member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings	125,635,098	3,831,506	85,460,703
Less: current portion	3,884,906	118,478	4,096,255
Noncurrent portion	121,750,192	3,713,028	81,364,448
Bank loans [member] | Cost [member] | Other loans [Member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings	117,177,156	3,573,564	77,318,195
Bank loans [member] | Cost [member] | Mortgage loans [Member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings	$ 8,457,942	$ 257,942	$ 8,142,508

X

- 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 2024-01-01
-Paragraph 55
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-URIDate 2024-03-27

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X

- Definition

The current portion of non-current borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

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- Definition

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+ References

No definition available.

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X

- Definition

The non-current portion of non-current borrowings. [Refer: Borrowings]

+ References

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-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

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