XML 94 R79.htm IDEA: XBRL DOCUMENT
v3.23.1

Summary of Significant Accounting Policies - Additional Information (Detail) | Dec. 31, 2022 TWD-USD shares | Dec. 31, 2021 shares
--- | --- | ---
Disclosure of subsidiaries [line items] |  |
Convenience exchange rate | TWD-USD | 30.73 |
Number of shares in entity held by entity | 72,941,000 | 72,941,000
Bottom of range [member] |  |
Disclosure of subsidiaries [line items] |  |
Number of shares in entity held by entity | 1 |
Percentage of total shares held in Subsidiaries | 0.10% |

X
- Definition Percentage of total shares held in Subsidiaries. + References No definition available. + Details
Name: | asx_PercentageOfTotalSharesHeldInSubsidiaries
Namespace Prefix: | asx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_ClosingForeignExchangeRate
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- 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. + Details
Name: | ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares in the entity held by the entity or by its subsidiaries or associates. [Refer: Associates [member]; Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 79 -Subparagraph a -Clause vi -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_79_a_vi&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_SharesInEntityHeldByEntityOrByItsSubsidiariesOrAssociates
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |