XML 190 R175.htm IDEA: XBRL DOCUMENT v3.23.1

Share-based Payment Arrangements - Additional Information (Detail) $ / shares in Units, $ / shares in Units, $ in Thousands				1 Months Ended		12 Months Ended
	Feb. 01, 2023 shares	May 31, 2021 shares $ / shares	Dec. 27, 2019	Sep. 30, 2020 shares	Nov. 30, 2019 USD ($) shares	Dec. 31, 2022 USD ($) shares $ / shares	Dec. 31, 2022 TWD ($) shares $ / shares	Dec. 31, 2021 TWD ($) shares $ / shares	Dec. 31, 2020 TWD ($) shares $ / shares	Dec. 31, 2022 TWD ($) $ / shares
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Number of shares granted				1,140,000
Retained earnings decreased | $									$ 392,447
Options granted					17,167,000
Compensation cost of employee share options						$ 32,211,000	$ 989,843	$ 699,211	955,575
Employee restricted stock awards plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Stock Issued during the period ,Restricted stock award ,shares						15,000,000	15,000,000
Par value per share | $ / shares										$ 10
Fair value of the employee restricted stock award | $						$ 92.4
Exercise price, per share | $ / shares								$ 0
USIE option plans [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Capital surplus decreased | $									1,120,111
USISH option plans [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Capital surplus decreased						$ 4,069,000		$ 58,448	$ 1,010,219	$ 125,049
Options granted						0	0	0	1,140,000
Number of equity instruments other than options granted						0	0	281,000	672,000
USISH option plans [member] | Bottom of range [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans					3.0
USISH option plans [member] | Weighted average [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans					4.0
USISH option plans [member] | Top of range [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans					5.0
ASE Inc. option plans [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Share option to purchase of ordinary shares						0.5	0.5
Weighted average exercise price of share options | (per share)						$ 3	$ 92.4	$ 108.8	$ 68.5
The Company Option Plans [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans						10 years	10 years
Percentage of cash dividend per ordinary share exceeds market price						1.50%	1.50%
USISH core employees stock ownership plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Compensation cost of employee share options | $					$ 6,156,000
Share based compensation number of additional shares to be granted					6,403,000
USISH core employees stock ownership plan [Member] | Phase One [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans			4.5
USISH core employees stock ownership plan [Member] | Phase Two [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans			3.5
USISH core employees stock ownership plan [Member] | Phase Three [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans			2.5
USISH second share option plan [member] | Phase One [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans				1.2 years
USISH second share option plan [member] | Phase Two [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans				2.2 years
USISH second share option plan [member] | Phase Three [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans				3.2 years
USISH second share option plan [member] | Bottom of range [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans				2.2
USISH second share option plan [member] | Weighted average [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans				3.2
USISH second share option plan [member] | Top of range [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans				4.2 years
USISH restricted share plan [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans				2 years
Number of equity instruments other than options granted				425,000
Period of lock in of ordinary shares to be issued upon satisfaction of performance conditions				1 year 3 months 18 days
Second Share Options Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Options granted	150,000,000
AMPI Option Plans [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Options granted						3,100,000	3,100,000
AMPI Option Plans [Member] | Share Option [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Valid term of share option plans		10 years
Number of share options, issued		10,000,000
AMPI Option Plans [Member] | Bottom of range [member] | Share Option [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Exercise price, per share | $ / shares		$ 7.5
AMPI Option Plans [Member] | Top of range [member] | Share Option [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Exercise price, per share | $ / shares		$ 30

X

- Definition

Fair value of the employee restricted stock award

+ References

No definition available.

+ Details

Name:	asx_FairValueOfTheEmployeeRestrictedStockAward
Namespace Prefix:	asx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Increase decrease in retained earnings.

+ References

No definition available.

+ Details

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

X

- Definition

Increase decrease in share premium.

+ References

No definition available.

+ Details

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

X

- Definition

Number Of Share Options Issued In Sharebased Payment Arrangement.

+ References

No definition available.

+ Details

Name:	asx_NumberOfShareOptionsIssuedInSharebasedPaymentArrangement
Namespace Prefix:	asx_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage Of Cash Dividend Per Ordinary Share Exceeds Market Price.

+ References

No definition available.

+ Details

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

X

- Definition

Period of lock in of ordinary shares to be issued upon satisfaction of performance conditions.

+ References

No definition available.

+ Details

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

X

- Definition

Shae option to right to purchase ordinary shares.

+ References

No definition available.

+ Details

Name:	asx_ShaeOptionToRightToPurchaseOrdinaryShares
Namespace Prefix:	asx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Share based compensation number of additional shares available for grant.

+ References

No definition available.

+ Details

Name:	asx_ShareBasedCompensationNumberOfAdditionalSharesAvailableForGrant
Namespace Prefix:	asx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Stock Issued during the period ,Restricted stock award ,shares

+ References

No definition available.

+ Details

Name:	asx_StockIssuedDuringThePeriodrestrictedStockAwardshares
Namespace Prefix:	asx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average exercise price of share options exercised.

+ References

No definition available.

+ Details

Name:	asx_WeightedAverageExercisePriceOfShareOptionsExercised
Namespace Prefix:	asx_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The description of the maximum term of options granted for a type of share-based payment arrangement that existed at any time during the period. An entity with substantially similar types of share-based payment arrangements may aggregate this information. [Refer: Share-based payment arrangements [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 45
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45_a&doctype=Standard
-URIDate 2022-03-24

+ Details

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

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

X

- Definition

The exercise price of share options granted.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 47
-Subparagraph a
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_47_a_i&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_ExercisePriceShareOptionsGranted2019
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of expense arising from cash-settled share-based payment transactions in which the goods or services received did not qualify for recognition as assets. [Refer: Expense from share-based payment transactions]

+ 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_ExpenseFromCashsettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The number of instruments granted in share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph IG23
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_IG23&doctype=Implementation%20Guidance
-URIDate 2022-03-24

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 45
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45_a&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_NumberOfInstrumentsGrantedInSharebasedPaymentArrangement
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 47
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2022-03-24

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 45
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of share options granted in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 45
-Subparagraph b
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45_b_ii&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The nominal value per share.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 79
-Subparagraph a
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_79_a_iii&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_ParValuePerShare
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	asx_PlanNameAxis=asx_EmployeeRestrictedStockAwardsPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=asx_USIEOptionPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=asx_USISHOptionPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_WeightedAverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=asx_ASEIncOptionPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=asx_TheCompanyOptionPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=asx_UsishCoreEmployeesStockOwnershipPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	asx_PhasesTypeAxis=asx_PhaseOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	asx_PhasesTypeAxis=asx_PhaseTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	asx_PhasesTypeAxis=asx_PhaseThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=asx_UsishSecondShareOptionPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=asx_UsishRestrictedSharePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=asx_SecondShareOptionsPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=asx_AmpiOptionPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=asx_ShareOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: