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Cover Page
 12 Months Ended
Dec. 31, 2024
shares
Document Information [Line Items]  
Document Type 20-F
Amendment Flag false
Document Period End Date Dec. 31, 2024
Document Fiscal Year Focus 2024
Document Fiscal Period Focus FY
Trading Symbol ASX
Entity Registrant Name ASE Technology Holding Co., Ltd.
Entity Central Index Key 0001122411
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer Yes
Entity Current Reporting Status Yes
Entity Filer Category Large Accelerated Filer
Entity Shell Company false
Entity Emerging Growth Company false
Entity Common Stock, Shares Outstanding 4,414,930,537
Document Annual Report true
Document Transition Report false
Document Shell Company Report false
Document Registration Statement false
Title of 12(b) Security Common Shares
Entity Interactive Data Current Yes
Entity Voluntary Filers No
Entity Address, Country TW
ICFR Auditor Attestation Flag true
Entity Address, Address Line One 26, Chin 3rd Rd
Entity Address, Address Line Two Nanzih Dist
Entity Address, City or Town Kaohsiung
Entity File Number 001-16125
Entity Incorporation, State or Country Code F5
Entity Address, Postal Zip Code 811
Document Accounting Standard International Financial Reporting Standards
Security Exchange Name NYSE
Auditor Name Deloitte & Touche
Auditor Firm ID 1060
Auditor Location Taipei, Taiwan
Document Financial Statement Error Correction [Flag] false
Business Contact [Member]  
Document Information [Line Items]  
Entity Address, Country TW
Contact Personnel Name Joseph Tung
Contact Personnel Email Address ir@aseglobal.com
Contact Personnel Fax Number 882-2-2757-6121
Entity Address, Address Line One Room 1901, No. 333, Section 1 Keelung Rd
Entity Address, City or Town Taipei
City Area Code 886-2
Local Phone Number 6636-5678
Entity Address, Postal Zip Code 110