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Short-term Loans - Summary of Short-term Loans (Detail) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021 TWD ($)	Dec. 31, 2021 EUR (€)
Disclosure of detailed information about borrowings [line items]
Amount	$ 114,921.3
Unsecured Loans [member]
Disclosure of detailed information about borrowings [line items]
Amount	$ 114,921.3
Short Term Loans [Member]
Disclosure of detailed information about borrowings [line items]
Loan content | €		€ 3,652.9
Maturity date	2022-06
Short Term Loans [Member] | Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Annual interest rate	(0.73%)	(0.73%)
Short Term Loans [Member] | Top of range [member]
Disclosure of detailed information about borrowings [line items]
Annual interest rate	0.00%	0.00%

X

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 7
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-URIDate 2022-03-24

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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.

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- Definition

The amount of contractual undiscounted cash flows for gross commitments to receive a loan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph B11D
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_B11D_e&doctype=Appendix&subtype=B
-URIDate 2022-03-24

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- Definition

The amount of current borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard
-URIDate 2022-03-24

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- Definition

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+ References

No definition available.

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