XML 205 R189.htm IDEA: XBRL DOCUMENT v3.25.1

Business Combinations - Summary of Goodwill Recognized on Acquisitions (Detail) - Dec. 31, 2024 $ in Thousands, $ in Thousands	TWD ($)	USD ($)
HIRSCHMANN [member]
Disclosure of detailed information about business combination [Line Items]
Total consideration	$ 2,317,201
Less: Fair value of identifiable net assets acquired	(2,296,200)
Goodwill (gain on bargain purchase) recognized on acquisition	21,001
ASEPCAYMAN [Member]
Disclosure of detailed information about business combination [Line Items]
Total consideration	1,096,373	$ 33,436
Less: Fair value of identifiable net assets acquired	(1,173,088)	(35,776)
Goodwill (gain on bargain purchase) recognized on acquisition	(76,715)	(2,340)
CHE [Member]
Disclosure of detailed information about business combination [Line Items]
Total consideration	1,945,678	59,338
Less: Fair value of identifiable net assets acquired	(1,945,678)	(59,338)
Goodwill (gain on bargain purchase) recognized on acquisition	$ 0	$ 0

X

- Definition

Gain (loss) recognised in bargain purchase transaction.

+ References

No definition available.

+ Details

Name:	asx_GainLossRecognisedInBargainPurchaseTransaction
Namespace Prefix:	asx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2024-01-01
-Paragraph B64
-Subparagraph f
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B64_f&doctype=Appendix&subtype=B
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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_DisclosureOfBusinessCombinationsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount recognised as of the acquisition date for net identifiable assets acquired or liabilities assumed in a business combination. [Refer: Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 3
-IssueDate 2024-01-01
-Paragraph B64
-Subparagraph i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 3
-IssueDate 2024-01-01
-Paragraph IE72
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_IE72&doctype=Illustrative%20Examples
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=asx_HirschmannMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=asx_AsepcaymanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=asx_CHEMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: