Conversion period of bonds.

No definition available.

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Period Type:	duration

- Definition

Conversion price

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Debt conversion, converted Instrument, shares issued.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Debt conversion, original debt, amount.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Disposal of bonds.

+ References

No definition available.

+ Details

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

- Definition

Number of consecutive trading days for determining conversion price.

+ References

No definition available.

+ Details

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Namespace Prefix:	asx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of current conversion price on Stock Exchange

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Percentage of par value on USISH bonds.

+ References

No definition available.

+ Details

Name:	asx_PercentageOfParValueOnUsishBonds
Namespace Prefix:	asx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

+ Details

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

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard
-URIDate 2024-03-27

+ Details

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Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The maturity of borrowings. [Refer: Borrowings]

+ References

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
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- 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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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

+ Details

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

- Details

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- Details

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- Details

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- Details

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Namespace Prefix:
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- Details

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Data Type:	na
Balance Type:
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- Details

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Data Type:	na
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- Details

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Bonds Payable - Additional Information (Detail) - CNY (¥) ¥ / shares in Units, ¥ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2024	Dec. 31, 2023
Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate			1.53%
Top of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate			1.54%
USISH Bonds [Member] \| USIE Investor [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings	¥ 771,169
Disposal of bonds	1,870,633
USISH Bonds [Member] \| ASE Investor [Member]
Disclosure of detailed information about borrowings [line items]
Disposal of bonds	¥ 28,397
USISH Bonds [Member] \| USISH [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity	Within 5 trading days after maturity
Borrowings, interest rate	108.00%
Borrowings	¥ 3,450,000
Notional Amount	¥ 100
Conversion Period of Bonds		9 months
Conversion Price	¥ 20.25	¥ 18.84
Percentage of current conversion price on Stock Exchange		80.00%
Percentage of par value on USISH Bonds		102.00%
Debt conversion, original debt, amount		¥ 144
Debt conversion, converted Instrument, shares issued		7
USISH Bonds [Member] \| USISH [Member] \| Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Percentage of current conversion price on Stock Exchange		70.00%
Number of consecutive trading days for determining Conversion price		15 days
USISH Bonds [Member] \| USISH [Member] \| Top of range [member]
Disclosure of detailed information about borrowings [line items]
Number of consecutive trading days for determining Conversion price		30 days
USISH Bonds [Member] \| USIE and ASE (Shanghai) Inc [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings	¥ 2,670,199
Unconverted USISH Bonds [Member] \| USISH [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings		¥ 30,000
Percentage of current conversion price on Stock Exchange		130.00%
Unconverted USISH Bonds [Member] \| USISH [Member] \| Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Number of consecutive trading days for determining Conversion price		20 days
Unconverted USISH Bonds [Member] \| USISH [Member] \| Top of range [member]
Disclosure of detailed information about borrowings [line items]
Percentage of current conversion price on Stock Exchange		130.00%
Number of consecutive trading days for determining Conversion price		30 days