XML 199 R183.htm IDEA: XBRL DOCUMENT
v3.25.1

Share-based Payment Arrangements - Summary of Outstanding Restricted Shares At Balance Sheet (Detail) - USISH option plans [member] - 2023 restricted stocks [Member] | 12 Months Ended
--- | ---
Dec. 31, 2024 yr | Dec. 31, 2023
Disclosure of Range Exercise Prices of Outstanding Restricted Shares [Line Items] |  |
Range of Exercise Price Per Share |  | 14.5
Remaining Contractual Life (Years) |  | 2 years 10 months 24 days
2024 granted [Member] |  |
Disclosure of Range Exercise Prices of Outstanding Restricted Shares [Line Items] |  |
Range of Exercise Price Per Share | 14.4 |
Remaining Contractual Life (Years) | 2 years |
2023 granted [Member] |  |
Disclosure of Range Exercise Prices of Outstanding Restricted Shares [Line Items] |  |
Range of Exercise Price Per Share | 14.5 |
Remaining Contractual Life (Years) | 1 year 10 months 24 days |

X
- Definition Disclosure of Range Exercise Prices of Outstanding Restricted Shares [Line Items]. + References No definition available. + Details
Name: | asx_DisclosureOfRangeExercisePricesOfOutstandingRestrictedSharesLineItems
Namespace Prefix: | asx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise Price of Outstanding Restricted Shares 2019. + References No definition available. + Details
Name: | asx_ExercisePriceOfOutstandingRestrictedShares2019
Namespace Prefix: | asx_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted Average Remaining Contractual Life of Outstanding Restricted Shares 2019. + References No definition available. + Details
Name: | asx_WeightedAverageRemainingContractualLifeOfOutstandingRestrictedShares2019
Namespace Prefix: | asx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=asx_USISHOptionPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | asx_PlanName1Axis=asx_TwoThousandAndTwentyThreeRestrictedSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | asx_GrantedAxis=asx_TwoThousandAndTwentyThreeGrantedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | asx_GrantedAxis=asx_TwoThousandAndTwentyFourGrantedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |