Income Tax - Current Tax Assets and Liabilities (Detail) $ in Millions, $ in Millions	Dec. 31, 2022 TWD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 TWD ($)
Major components of tax expense (income) [abstract]
Tax refund receivable (included in other current assets - other)	$ 2		$ 5
Income tax payable	$ 6,999	$ 228	$ 6,530

The current amount of current tax liabilities. [Refer: Current tax liabilities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 54
-Subparagraph n
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_54_n&doctype=Standard
-URIDate 2022-03-24

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