Trade Receivables, Net - Transfer of Financial Asset (Detail) - BNP Paribas [Member] - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Receivables Factoring Proceeds [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Assets that entity continues to recognise	€ 28,545	€ 23,600
Reclassified to Other Receivables [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Transferred to other receivables	28,545	18,283
Advances Received But Unused [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Advances received	27,206	17,103
Advances Received Used [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Advances received	€ 0	€ 5,317
Interest Rate On Advances Received Against Trade Receivables Sold [Member]
Disclosure of transferred financial assets that are not derecognised in their entirety [line items]
Interest rates on advances received	0.00%	0.80%

Interest Rate on advances received against trade receivables sold.

No definition available.

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Namespace Prefix:	asx_
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Balance Type:	na
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- Definition

Proceeds From Advances Received Against Receivables Transferred

+ References

No definition available.

+ Details

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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 2023-01-01
-Paragraph 42D
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_42D_e&doctype=Standard
-URIDate 2023-03-23

+ Details

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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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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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