Interest Rate on advances received against trade receivables sold.

No definition available.

Name:	asx_InterestRateOnAdvancesReceivedAgainstTradeReceivablesSold
Namespace Prefix:	asx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Proceeds From Advances Received Against Receivables Transferred

+ References

No definition available.

+ Details

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

- Definition

Receivables sold advances not yet received.

+ References

No definition available.

+ Details

Name:	asx_ReceivablesSoldAdvancesNotYetReceived
Namespace Prefix:	asx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of transferred financial assets that the entity continues to recognise in full. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 42D
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_42D_e&doctype=Standard
-URIDate 2022-03-24

+ Details

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

- 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

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_FinancialAssetsWhichDoNotQualifyForDerecognitionAxis=asx_ReceivablesFactoringProceedsMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	ifrs-full_CounterpartiesAxis=asx_BnpParibasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CounterpartiesAxis=asx_FirstCommercialBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_FinancialAssetsWhichDoNotQualifyForDerecognitionAxis=asx_ReclassifiedtoOtherReceivablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_FinancialAssetsWhichDoNotQualifyForDerecognitionAxis=asx_AdvancesReceivedButUnusedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_FinancialAssetsWhichDoNotQualifyForDerecognitionAxis=asx_AdvancesReceivedUsedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_FinancialAssetsWhichDoNotQualifyForDerecognitionAxis=asx_InterestRateOnAdvancesReceivedAgainstTradeReceivablesSoldMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Trade Receivables, Net - Transfer of Financial Asset (Detail) € in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 EUR (€)	Dec. 31, 2021 EUR (€)	Dec. 31, 2021 TWD ($)	Dec. 31, 2021 TWD ($)
Receivables Factoring Proceeds [Member] \| BNP Paribas [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Assets that entity continues to recognise	€ 23,600	€ 12,115
Receivables Factoring Proceeds [Member] \| First Commercial Bank [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Assets that entity continues to recognise \| $				$ 8,565
Reclassified to Other Receivables [Member] \| BNP Paribas [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Transferred to other receivables	18,283	12,081
Advances Received But Unused [Member] \| BNP Paribas [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Advances received	17,103	11,475
Advances Received Used [Member] \| BNP Paribas [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Advances received	€ 5,317	€ 34
Advances Received Used [Member] \| First Commercial Bank [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Advances received \| $			$ 8,565
Interest Rate On Advances Received Against Trade Receivables Sold [Member] \| BNP Paribas [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Interest rates on advances received	0.80%	0.80%	0.80%
Interest Rate On Advances Received Against Trade Receivables Sold [Member] \| First Commercial Bank [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Interest rates on advances received		1.95%	1.95%