XML 115 R99.htm IDEA: XBRL DOCUMENT
v3.25.1

Inventories Related to Real Estate Business - Summary of Inventories Related to Real Estate Business (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2024 TWD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 TWD ($)
--- | --- | --- | ---
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |
Inventories related to real estate business | $ 3,866,994 | $ 117,932 | $ 3,668,476
Land and buildings held for sale [member] |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |
Inventories related to real estate business | 647,039 | 19,733 | 666,665
Construction in progress [member] |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |
Inventories related to real estate business | $ 3,219,955 | $ 98,199 | $ 3,001,811

X
- Definition Dummy + References No definition available. + Details
Name: | asx_Dummy
Namespace Prefix: | asx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_DisclosureOfPropertyPlantAndEquipmentLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=asx_LandAndBuildingsHeldForSaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_ConstructionInProgressMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |