XML 231 R216.htm IDEA: XBRL DOCUMENT v3.23.1

Others - Additional Information (Detail) ¥ in Thousands, $ in Thousands				1 Months Ended
	Jun. 30, 2020 CNY (¥)	Feb. 10, 2020 TWD ($)	Dec. 27, 2019 TWD ($)	Dec. 31, 2013 TWD ($)
Disclosure Detailed Information About Others [Line Items]
Contribution received from Environmental Protection			$ 55,062
Procuratorate [Member]
Disclosure Detailed Information About Others [Line Items]
Administrative fine imposed | ¥	¥ 400
Income from fines and penalties | ¥	¥ 344
Original Fine [Member]
Disclosure Detailed Information About Others [Line Items]
Administrative fine imposed				$ 102,014
New Fine [Member]
Disclosure Detailed Information About Others [Line Items]
Administrative fine imposed		$ 46,952

X

- Definition

Amount of fine imposed.

+ References

No definition available.

+ Details

Name:	asx_AmountOfFineImposed
Namespace Prefix:	asx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Disclosure detailed information about others.

+ References

No definition available.

+ Details

Name:	asx_DisclosureDetailedInformationAboutOthersLineItems
Namespace Prefix:	asx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The gain on settlements of litigation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 98
-Subparagraph f
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_98_f&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_GainsOnLitigationSettlements
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of income arising from fines and penalties.

+ 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_IncomeFromFinesAndPenalties
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	ifrs-full_BusinessCombinationsAxis=asx_ProcuratorateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	asx_ClassificationOfFineAxis=asx_OriginalFineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	asx_ClassificationOfFineAxis=asx_NewFineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: