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Summary of Material Accounting Policy Information - Summary of Subsidiaries (Detail)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
The Company [Member] | ASE [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the packaging and testing of semiconductors  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 100.00% 100.00%
The Company [Member] | USI Inc. ("USIINC") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 100.00% 100.00%
The Company [Member] | SPIL [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the assembly, testing and turnkey services of integrated circuit  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 100.00% 100.00%
The Company [Member] | ASE Social Enterprise Co., Ltd [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in social services  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 100.00% 100.00%
The Company [Member] | ASE Global Integrated Solutions Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in integration-relevant services  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 100.00% 100.00%
ASE [Member] | A.S.E. Holding Limited [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Bermuda  
Percentage of Ownership (%) 100.00% 100.00%
ASE [Member] | J & R Holding Limited ("J&R Holding") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Bermuda  
Percentage of Ownership (%) 100.00% 100.00%
ASE [Member] | Innosource Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location British Virgin Islands  
Percentage of Ownership (%) 100.00% 100.00%
ASE [Member] | Omniquest Industrial Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location British Virgin Islands  
Percentage of Ownership (%) 71.00% 71.00%
ASE [Member] | ASE Marketing & Service Japan Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in marketing and sales services  
Establishment and Operating Location Japan  
Percentage of Ownership (%) 100.00% 100.00%
ASE [Member] | ASE Test, Inc. ("ASET") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the testing of semiconductors  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 100.00% 100.00%
ASE [Member] | Advanced Microelectronic Products Inc. ("AMPI") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the manufacturing of integrated circuit  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 6.90% 7.60%
ASE [Member] | ASE Singapore Pte. Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the packaging and testing of semiconductors  
Establishment and Operating Location Singapore  
Percentage of Ownership (%) 100.00% 100.00%
ASE [Member] | ASE Electronics (M) Sdn. Bhd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the packaging and testing of semiconductors  
Establishment and Operating Location Malaysia  
Percentage of Ownership (%) 100.00% 100.00%
ASE [Member] | ASEP Cayman Ltd. ("ASEPCAYMAN") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the packaging and testing of semiconductors, and was acquired in August 2024 (Note 29)  
Establishment and Operating Location British Cayman Islands  
Percentage of Ownership (%) 100.00% 0.00%
ASET [Member] | Alto Enterprises Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location British Virgin Islands  
Percentage of Ownership (%) 100.00% 100.00%
ASET [Member] | Super Zone Holdings Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Hong Kong  
Percentage of Ownership (%) 100.00% 100.00%
ASET [Member] | TLJ Intertech Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in information software services  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 60.00% 60.00%
ASET [Member] | AMPI [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the manufacturing of integrated circuit  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 48.90% 43.40%
A.S.E. Holding Limited [Member] | ASE Investment (Labuan) Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Malaysia  
Percentage of Ownership (%) 70.10% 70.10%
A.S.E. Holding Limited [Member] | ASE Test Limited ("ASE Test") [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Singapore  
Percentage of Ownership (%) 10.20% 10.20%
A.S.E. Holding Limited [Member] | ASE Technology Partners, Limited [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Liquidation completed in March 2024  
Establishment and Operating Location British Cayman Islands  
Percentage of Ownership (%) 0.00% 100.00%
A.S.E. Holding Limited [Member] | Integrated Solutions Enterprise Europe [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Trading company  
Establishment and Operating Location Belgium  
Percentage of Ownership (%) 100.00% 100.00%
J&R Holding [Member] | Omniquest Industrial Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location British Virgin Islands  
Percentage of Ownership (%) 8.40% 8.40%
J&R Holding [Member] | ASE Test [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Singapore  
Percentage of Ownership (%) 89.80% 89.80%
J&R Holding [Member] | J&R Industrial Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in leasing and investing activity  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 100.00% 100.00%
J&R Holding [Member] | ASE Japan Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the packaging and testing of semiconductors  
Establishment and Operating Location Japan  
Percentage of Ownership (%) 100.00% 100.00%
J&R Holding [Member] | ASE (U.S.) Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business After-sales service and sales support  
Establishment and Operating Location U.S.A.  
Percentage of Ownership (%) 100.00% 100.00%
J&R Holding [Member] | Global Advanced Packaging Technology Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location British Cayman Islands  
Percentage of Ownership (%) 100.00% 100.00%
Innosource Limited [Member] | Omniquest Industrial Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location British Virgin Islands  
Percentage of Ownership (%) 20.60% 20.60%
Innosource Limited [Member] | ASE (Shanghai) Inc. ("ASEMTL") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the production of substrates  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 8.50% 8.50%
Innosource Limited [Member] | ASE Enterprise Management (Shanghai) Inc. ("ASEEMSH") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the leasing of properties and buildings, and was spun off from ASEMTL in November 2023  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 8.50% 8.50%
Omniquest Industrial Limited [Member] | ASE Corporation [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location British Cayman Islands  
Percentage of Ownership (%) 100.00% 100.00%
Alto Enterprises Limited [Member] | ASE Investment (Kun Shan) Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Kun Shan, China  
Percentage of Ownership (%) 100.00% 100.00%
Super Zone Holdings Limited [Member] | Advanced Semiconductor Engineering (China) Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the packaging and testing of semiconductors, after-sale services, advisory and lease of factory  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 100.00% 100.00%
ASE Investment (Labuan) Inc. [Member] | ASE (Korea) Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the packaging and testing of semiconductors  
Establishment and Operating Location Korea  
Percentage of Ownership (%) 100.00% 100.00%
ASE (Korea) Inc. [Member] | ASE Cheonan, Inc. ("CHE") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the packaging and testing of semiconductors, and was acquired in August 2024 (Note 29)  
Establishment and Operating Location Korea  
Percentage of Ownership (%) 100.00% 0.00%
ASE Technology Partners, Limited [Member] | ASE Technology Acquisition Corporation [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Liquidation completed in March 2024  
Establishment and Operating Location British Cayman Islands  
Percentage of Ownership (%) 0.00% 100.00%
ASE Test [Member] | ASE Investment (Labuan) Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Malaysia  
Percentage of Ownership (%) 29.90% 29.90%
ASE Test [Member] | ASE Test Holdings, Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location British Cayman Islands  
Percentage of Ownership (%) 100.00% 100.00%
ASE Test [Member] | ASE Holdings (Singapore) Pte. Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company (merged by ASE Test in July 2024)  
Establishment and Operating Location Singapore  
Percentage of Ownership (%) 0.00% 100.00%
ASE Test Holdings, Ltd. [Member] | ISE Labs, Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the testing of semiconductors  
Establishment and Operating Location U.S.A.  
Percentage of Ownership (%) 100.00% 100.00%
ISE Labs, Inc. [Member] | ISE Services, Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in turnkey services of semiconductors  
Establishment and Operating Location U.S.A.  
Percentage of Ownership (%) 100.00% 100.00%
Global Advanced Packaging Technology Limited [Member] | ASE Assembly & Test (Shanghai) Limited ("ASESH") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the packaging and testing of semiconductors and leasing of properties  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 100.00% 100.00%
ASESH [Member] | Wuxi Tongzhi Microelectronics Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the packaging and testing of semiconductors  
Establishment and Operating Location Wuxi, China  
Percentage of Ownership (%) 100.00% 100.00%
ASESH [Member] | ISE Labs, China, Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the testing of semiconductor  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 100.00% 100.00%
ASESH [Member] | Shanghai Ding Hui Real Estate Development Co., Ltd. ("DH") [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the development, construction and sale of real estate properties  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 60.00% 60.00%
DH [Member] | Shanghai Ding Qi Property Management Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the management of real estate properties  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 100.00% 100.00%
DH [Member] | Shanghai Ding Wei Real Estate Development Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the management of properties, parking lot business and leasing of properties for shopping center  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 100.00% 100.00%
DH [Member] | Shanghai Ding Yu Real Estate Development Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the management of properties, parking lot business and leasing of properties for shopping center  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 100.00% 100.00%
DH [Member] | Kun Shan Ding Hong Real Estate Development Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the development, construction and leasing of properties for shopping center  
Establishment and Operating Location Kun Shan, China  
Percentage of Ownership (%) 100.00% 100.00%
DH [Member] | Shanghai Ding Xu Property Management Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the management of real estate properties  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 100.00% 100.00%
DH [Member] | Shanghai Ding Yao Estate Development Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the management of real estate properties  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 100.00% 100.00%
DH [Member] | Shanghai Ding Fan Business Management Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the management of commercial complex services and department store trading  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 100.00% 100.00%
ASE Corporation [Member] | ASE Mauritius Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Mauritius  
Percentage of Ownership (%) 100.00% 100.00%
ASE Corporation [Member] | ASE Labuan Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Malaysia  
Percentage of Ownership (%) 100.00% 100.00%
ASE Mauritius Inc. [Member] | ASEMTL [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the production of substrates  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 91.50% 91.50%
ASE Mauritius Inc. [Member] | ASEEMSH [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the leasing of properties and buildings, and was spun off from ASEMTL in November 2023  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 91.50% 91.50%
ASE Labuan Inc. [Member] | ASE Electronics Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the production of substrates  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 100.00% 100.00%
ASEMTL [member] | Advanced Semiconductor Engineering (HK) Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Trading company  
Establishment and Operating Location Hong Kong  
Percentage of Ownership (%) 100.00% 100.00%
ASEMTL [member] | Universal Scientific Industrial (Shanghai) Co., Ltd. ("USISH") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the designing, manufacturing and sales of electronic components  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 0.80% 0.80%
ASEEMSH [member] | DH [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the development, construction and sale of real estate properties (spun off from ASEMTL in November 2023)  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 40.00% 40.00%
ASEPCAYMAN [Member] | Cyland Corp. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the leasing of real estate  
Establishment and Operating Location Philippines  
Percentage of Ownership (%) 39.80% 0.00%
USIINC [Member] | Huntington Holdings International Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location British Virgin Islands  
Percentage of Ownership (%) 100.00% 100.00%
Huntington Holdings International Co., Ltd. [Member] | Unitech Holdings International Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location British Virgin Islands  
Percentage of Ownership (%) 100.00% 100.00%
Huntington Holdings International Co., Ltd. [Member] | Real Tech Holdings Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location British Virgin Islands  
Percentage of Ownership (%) 100.00% 100.00%
Huntington Holdings International Co., Ltd. [Member] | Universal ABIT Holding Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business In the process of liquidation  
Establishment and Operating Location British Cayman Islands  
Percentage of Ownership (%) 100.00% 100.00%
Real Tech Holdings Limited [Member] | USI Enterprise Limited ("USIE") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the service of investment advisory and warehousing management  
Establishment and Operating Location Hong Kong  
Percentage of Ownership (%) 100.00% 100.00%
USIE [Member] | USISH [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the designing, manufacturing and sales of electronic components  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 77.10% 77.00%
USISH [Member] | Universal Global Technology Co., Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Hong Kong  
Percentage of Ownership (%) 100.00% 100.00%
USISH [Member] | Universal Global Technology (Kunshan) Co., Ltd. ("UGKS") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the designing and manufacturing of electronic components  
Establishment and Operating Location Kun Shan, China  
Percentage of Ownership (%) 100.00% 100.00%
USISH [Member] | Universal Global Technology (Shanghai) Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the processing and sales of computer and communication peripherals as well as business in import and export of goods and technology  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 100.00% 100.00%
USISH [Member] | Universal Global Electronics (Shanghai) Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the sales of electronic components and telecommunications equipment  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 100.00% 100.00%
USISH [Member] | USI Electronics (Shenzhen) Co., Ltd. ("USISZ") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design, manufacturing and sales of motherboards and computer peripherals  
Establishment and Operating Location Shenzhen, China  
Percentage of Ownership (%) 50.00% 50.00%
USISH [Member] | Universal Global Technology (Huizhou) Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the research and manufacturing of new electronic applications, communications, computers and other electronics products and also provided auxiliary technical services as well as import and export services  
Establishment and Operating Location Huizhou, China  
Percentage of Ownership (%) 100.00% 100.00%
USISH [Member] | FINANCIERE AFG ("FAFG") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location France  
Percentage of Ownership (%) 10.40% 10.40%
Universal Global Technology Co., Limited [Member] | Universal Global Industrial Co., Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in manufacturing, trading and investing activity  
Establishment and Operating Location Hong Kong  
Percentage of Ownership (%) 100.00% 100.00%
Universal Global Technology Co., Limited [Member] | Universal Global Scientific Industrial Co., Ltd. ("UGTW") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the manufacturing of components of telecommunication and cars and provision of related R&D services  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 100.00% 100.00%
Universal Global Technology Co., Limited [Member] | USI America Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the manufacturing and processing of motherboards and wireless network communication and provision of related technical service  
Establishment and Operating Location U.S.A.  
Percentage of Ownership (%) 100.00% 100.00%
Universal Global Technology Co., Limited [Member] | Universal Scientific Industrial De Mexico S.A. De C.V. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the assembling of motherboards and computer components  
Establishment and Operating Location Mexico  
Percentage of Ownership (%) 100.00% 100.00%
Universal Global Technology Co., Limited [Member] | USI Japan Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the manufacturing and sales of computer peripherals, integrated chip and other related accessories  
Establishment and Operating Location Japan  
Percentage of Ownership (%) 100.00% 100.00%
Universal Global Technology Co., Limited [Member] | USISZ [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design, manufacturing and sales of motherboards and computer peripherals  
Establishment and Operating Location Shenzhen, China  
Percentage of Ownership (%) 50.00% 50.00%
Universal Global Technology Co., Limited [Member] | Universal Global Electronics Co., Ltd. ("UGHK") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in accepting and outsourcing orders as well as sales of electronic components and service of technical advisory (disposed to ASTEELFLASH HONG KONG LIMITED in January 2024)  
Establishment and Operating Location Hong Kong  
Percentage of Ownership (%) 0.00% 100.00%
Universal Global Technology Co., Limited [Member] | Universal Scientific Industrial (France) [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in investing activities  
Establishment and Operating Location France  
Percentage of Ownership (%) 100.00% 100.00%
Universal Global Technology Co., Limited [Member] | UNIVERSAL SCIENTIFIC INDUSTRIAL VIETNAM COMPANY LIMITED [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in IC assembly for wearable devices  
Establishment and Operating Location Vietnam  
Percentage of Ownership (%) 100.00% 100.00%
Universal Global Technology Co., Limited [Member] | Universal Ample Technology Co., Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company, and was established in May 2023  
Establishment and Operating Location Hong Kong  
Percentage of Ownership (%) 75.10% 75.10%
Universal Global Industrial Co., Limited [Member] | Universal Scientific Industrial De Mexico S.A. De C.V. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the assembling of motherboards and computer components  
Establishment and Operating Location Mexico  
UGTW [Member] | Universal Scientific Industrial Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the manufacturing, processing and sales of computers, computer peripherals and related accessories  
Establishment and Operating Location R.O.C.  
Percentage of Ownership (%) 100.00% 100.00%
Universal Global Electronics (Shanghai) Co., Ltd. [member] | USI Science and Technology (Shenzhen) Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design of electronic components, service of technical advisory; wholesale of electronic components and communication peripherals as well as business in import and export of goods and management of properties  
Establishment and Operating Location Shenzhen, China  
Percentage of Ownership (%) 100.00% 100.00%
Universal Ample Technology Co., Limited [member] | Hirschmann Mobility Holding GmbH (renamed in January 2024, formerly named as setus 80.Gmbh) [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Germany  
Percentage of Ownership (%) 100.00% 100.00%
Hirschmann Mobility Holding GmbH [Member] | Hirschmann Car Communication Holding S.a.r.l. ("HIRSCHMANN") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Luxembourg  
Percentage of Ownership (%) 100.00% 100.00%
Hirschmann [member] | Hirschmann Car Communication GmbH [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the research and development, manufacturing and sales of PCBAs and tuners  
Establishment and Operating Location Germany  
Percentage of Ownership (%) 100.00% 100.00%
Hirschmann [member] | Hirschmann Car Communication Kft. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the manufacturing and sales of antennas, RF amplifiers, connectors and wave straps  
Establishment and Operating Location Hungary  
Percentage of Ownership (%) 100.00% 100.00%
Hirschmann [member] | Hirschmann Car Communication, Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the research and development, and sales marketing  
Establishment and Operating Location U.S.A.  
Percentage of Ownership (%) 100.00% 100.00%
Hirschmann Car Communication GmbH [member] | Hirschmann Car Communication S.A.S. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the research and development, and sales marketing  
Establishment and Operating Location France  
Percentage of Ownership (%) 100.00% 100.00%
Hirschmann Car Communication GmbH [member] | Hirschmann Car Communication (Shanghai) Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the sales of antennas, RF amplifiers and wave straps, PCBs, and tuners  
Establishment and Operating Location Shanghai, China  
Percentage of Ownership (%) 100.00% 100.00%
Universal Scientific Industrial (France) [member] | FAFG [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location France  
Percentage of Ownership (%) 89.60% 89.60%
FAFG [member] | MANUFACTURING POWER TUNISIA [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Tunisia  
Percentage of Ownership (%) 99.90% 99.90%
FAFG [member] | ASTEELFLASH MEXICO S.A. de C.V. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Mexico  
Percentage of Ownership (%) 99.90% 99.90%
FAFG [member] | ASTEELFLASH (BEDFORD) LIMITED [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location United Kingdom  
Percentage of Ownership (%) 100.00% 100.00%
FAFG [member] | ASTEELFLASH FRANCE [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location France  
Percentage of Ownership (%) 99.90% 99.90%
FAFG [member] | ASTEELFLASH TUNISIE S.A. [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Tunisia  
Percentage of Ownership (%) 100.00% 100.00%
FAFG [member] | ASTEELFLASH HONG KONG LIMITED [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location Hong Kong  
Percentage of Ownership (%) 100.00% 100.00%
FAFG [member] | Asteelflash Holding GmbH. (renamed in January 2024, formerly named as ASTEELFLASH GERMANY GmbH) [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Germany  
Percentage of Ownership (%) 100.00% 100.00%
FAFG [member] | ASTEELFLASH US HOLDING CORP. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Holding company  
Establishment and Operating Location U.S.A.  
Percentage of Ownership (%) 100.00% 100.00%
FAFG [member] | AFERH TUNISIE [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the management, training and consulting of human resources  
Establishment and Operating Location Tunisia  
Percentage of Ownership (%) 0.50% 0.50%
FAFG [member] | ASTEEL ELECTRONICS MANUFACTURING SERVICES [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Tunisia  
Percentage of Ownership (%) 0.10% 0.10%
FAFG [member] | ASTEELFLASH PLZEN S.R.O. [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Czech Republic  
Percentage of Ownership (%) 100.00% 100.00%
ASTEELFLASH (BEDFORD) LIMITED [Member] | ASTEELFLASH TUNISIE S.A. [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Tunisia  
ASTEELFLASH TECHNOLOGIE [Member] | ASTEELFLASH FRANCE [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location France  
ASTEELFLASH FRANCE [Member] | MANUFACTURING POWER TUNISIA [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Tunisia  
Percentage of Ownership (%) 0.10% 0.10%
ASTEELFLASH FRANCE [Member] | ASTEELFLASH MEXICO S.A. de C.V. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Mexico  
Percentage of Ownership (%) 0.10% 0.10%
ASTEELFLASH FRANCE [Member] | ASTEELFLASH TUNISIE S.A. [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Tunisia  
ASTEELFLASH FRANCE [Member] | AFERH TUNISIE [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the management, training and consulting of organization and human resources  
Establishment and Operating Location Tunisia  
Percentage of Ownership (%) 99.50% 99.50%
ASTEELFLASH FRANCE [Member] | ASTEEL ELECTRONICS MANUFACTURING SERVICES [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Tunisia  
Percentage of Ownership (%) 99.90% 99.90%
ASTEELFLASH FRANCE [Member] | ASTEELFLASH TECHNOLOGIE [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in projection of plastic and the design and manufacturing of industrial components  
Establishment and Operating Location France  
Percentage of Ownership (%) 100.00% 100.00%
ASTEELFLASH FRANCE [Member] | ASTEELFLASH BRETAGNE [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components (liquidation completed in January 2024)  
Establishment and Operating Location France  
Percentage of Ownership (%) 0.00% 100.00%
ASTEELFLASH HONG KONG LIMITED [Member] | Asteelflash Suzhou Co., Ltd. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Suzhou, China  
Percentage of Ownership (%) 100.00% 100.00%
ASTEELFLASH HONG KONG LIMITED [Member] | UGHK [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in accepting and outsourcing orders as well as sales of electronic components and service of technical advisory (acquired from Universal Global Technology Co., Limited in January 2024)  
Establishment and Operating Location Hong Kong  
Percentage of Ownership (%) 100.00% 0.00%
UGHK [Member] | Universal Scientific Industrial Poland Sp. z o.o. ("USIPL") [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components and new electronic applications  
Establishment and Operating Location Poland  
Percentage of Ownership (%) 100.00% 100.00%
Asteelflash Suzhou Co., Ltd. [member] | ASTEELFLASH TUNISIE S.A. [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Tunisia  
Asteelflash Holding GmbH. [member] | ASTEELFLASH TUNISIE S.A. [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Tunisia  
Asteelflash Holding GmbH. [member] | ASTEELFLASH Germany GmbH. (renamed in January 2024, formerly named as ASTEELFLASH HERSFELD GmbH) [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Germany  
Percentage of Ownership (%) 100.00% 100.00%
Asteelflash Holding GmbH. [member] | ASTEELFLASH DESIGN SOLUTIONS HAMBOURG GmbH [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Germany  
Percentage of Ownership (%) 100.00% 100.00%
Asteelflash Holding GmbH. [member] | EN ELECTRONICNETWORK SRL [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Romania  
Percentage of Ownership (%) 100.00% 100.00%
ASTEELFLASH MEXICO S.A. de C.V. [member] | ASTEELFLASH TUNISIE S.A. [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Tunisia  
ASTEELFLASH US HOLDING CORP. [member] | ASTEELFLASH USA CORP. [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location U.S.A.  
Percentage of Ownership (%) 100.00% 100.00%
ASTEELFLASH USA CORP. [member] | ASTEELFLASH TUNISIE S.A. [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the design and manufacturing of electronic components  
Establishment and Operating Location Tunisia  
SPIL [Member] | SPIL (B.V.I.) Holding Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in investing activities  
Establishment and Operating Location British Virgin Islands  
Percentage of Ownership (%) 100.00% 100.00%
SPIL [Member] | Siliconware Precision Malaysia Sdn. Bhd. [Member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the assembly and testing, and was established in September 2023  
Establishment and Operating Location Malaysia  
Percentage of Ownership (%) 100.00% 100.00%
SPIL (B.V.I.) Holding Limited [Member] | Siliconware USA, Inc. [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in marketing activities  
Establishment and Operating Location U.S.A.  
Percentage of Ownership (%) 100.00% 100.00%
SPIL (B.V.I.) Holding Limited [Member] | SPIL (Cayman) Holding Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in investing activities  
Establishment and Operating Location British Cayman Islands  
Percentage of Ownership (%) 100.00% 100.00%
SPIL (Cayman) Holding Limited [Member] | Siliconware Technology (Suzhou) Limited [member]    
Disclosure of subsidiaries [Line Items]    
Main Business Engaged in the packaging and testing of semiconductors  
Establishment and Operating Location Suzhou, China  
Percentage of Ownership (%) 100.00% 100.00%