Contents of Significant Accounts - Amortization Amounts of Intangible Assets (Detail) - TWD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Operating costs [member]
Disclosure Of Intangible Assets [Line Items]
Amortization amounts of intangible assets	$ 1,144,960	$ 1,329,850
Operating expenses [member]
Disclosure Of Intangible Assets [Line Items]
Amortization amounts of intangible assets	$ 1,410,650	$ 1,359,750

The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; Intangible assets other than goodwill]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2023-01-01
-Paragraph 118
-Subparagraph e
-Clause vi
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2023-en-r&anchor=para_118_e_vi&doctype=Standard
-URIDate 2023-03-23

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration