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Summary of Significant Accounting Policies - Summary of Subsidiaries (Detail) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
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] | 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 and was established in June 2022 |
Establishment and Operating Location | R.O.C. |
Percentage of Ownership (%) | 100.00% | 0.00%
ASE [Member] | ASE 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. [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] | Luchu Development Corporation [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the development of real estate properties |
Establishment and Operating Location | R.O.C. |
Percentage of Ownership (%) | 67.10% | 67.10%
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 (%) | 7.60% | 7.60%
ASE [Member] | ASE Singapore Pte. Ltd. [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the packaging and testing of semiconductors (acquired from ASE Test Limited (“ASE Test”) in November 2022) |
Establishment and Operating Location | Singapore |
Percentage of Ownership (%) | 100.00% | 0.00%
ASE [Member] | ASE Electronics (M) Sdn. Bhd. [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the packaging and testing of semiconductors (acquired from ASE Holdings (Singapore) Pte Ltd in November 2022) |
Establishment and Operating Location | Malaysia |
Percentage of Ownership (%) | 100.00% | 0.00%
ASE Test Inc [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%
ASE Test Inc [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%
ASE Test Inc [Member] | Luchu Development Corporation [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the development of real estate properties |
Establishment and Operating Location | R.O.C. |
Percentage of Ownership (%) | 19.00% | 19.00%
ASE Test Inc [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%
ASE Test Inc [Member] | MingFeng Information Service Corp., Ltd. [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Liquidation completed in February 2022 |
Establishment and Operating Location | R.O.C. |
Percentage of Ownership (%) | 0.00% | 100.00%
ASE Test Inc [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 (%) | 43.40% | 43.40%
ASE 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%
ASE Holding Limited [Member] | ASE Test [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Holding company |
Establishment and Operating Location | Singapore |
Percentage of Ownership (%) | 10.20% | 10.20%
ASE Holding Limited [Member] | ASE Technology Partners, 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%
ASE Holding Limited [Member] | Integrated Solutions Enterprise Europe ("ITGEU") |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Trading company, and was acquired in October 2021 (Note 29) |
Establishment and Operating Location | Belgium |
Percentage of Ownership (%) | 100.00% | 100.00%
J&R Holding Limited [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 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 (%) | 8.40% | 8.40%
J&R Holding Limited [Member] | J&R Industrial Inc. [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in leasing equipment and investing activity |
Establishment and Operating Location | R.O.C. |
Percentage of Ownership (%) | 100.00% | 100.00%
J&R Holding Limited [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 Limited [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 Limited [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 Investor [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 Investor [Member] | ASE (Shanghai) Inc. [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%
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 (Kunshan) Inc. [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the packaging and testing of semiconductors |
Establishment and Operating Location | Kun Shan, China |
Percentage of Ownership (%) | 0.00% |
Alto Enterprises Limited [Member] | ASE Investment (Kun Shan) Limited [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Holding company (returned shares to ASE Assembly & Test (Shanghai) Limited through capital reduction in November 2022 and increased Alto Enterprises Limited’s percentage of ownership to 100%) |
Establishment and Operating Location | Kun Shan, China |
Percentage of Ownership (%) | 100.00% | 85.90%
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. ("ASE Korea") [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 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 |
Establishment and Operating Location | Singapore |
Percentage of Ownership (%) | 100.00% | 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 Singapore Pte. Ltd. [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the packaging and testing of semiconductors (disposed to ASE in November 2022) |
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 wafer procurement and customer product management services |
Establishment and Operating Location | U.S.A. |
Percentage of Ownership (%) | 100.00% | 100.00%
ASE Holdings (Singapore) Pte Ltd [Member] | ASE Electronics (M) Sdn. Bhd. [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the packaging and testing of semiconductors (disposed to ASE in November 2022) |
Establishment and Operating Location | Malaysia |
Percentage of Ownership (%) | 0.00% | 100.00%
Global Advanced Packaging Technology Limited [Member] | ASE Assembly & Test (Shanghai) Limited [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%
Global Advanced Packaging Technology Limited [Member] | GAPT Holding Limited [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Holding company |
Establishment and Operating Location | British Virgin Islands |
Percentage of Ownership (%) | 0.00% |
GAPT Holding Limited [Member] | Global Advanced Packaging Test (Hongkong) Limited [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the trading of substrates |
Establishment and Operating Location | Hong Kong |
Percentage of Ownership (%) | 0.00% |
Global Advanced Packaging Test (Hongkong) Limited [Member] | Suzhou ASEN Semiconductors Co., Ltd. ("ASEN") [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 (%) | 0.00% |
Global Advanced Packaging Test (Hongkong) Limited [Member] | ASE (Weihai) Inc. [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the packaging and testing of semiconductors (acquired from J&R Holding in October 2021 through share exchange under restructure) |
Establishment and Operating Location | Shandong, China |
Percentage of Ownership (%) | 0.00% |
ASE Assembly & Test (Shanghai) Limited [member] | ASE Investment (Kun Shan) Limited [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Holding company ( returned shares to ASE Assembly & Test (Shanghai) Limited through capital reduction in November 2022 and increased Alto Enterprises Limited’s percentage of ownership to 100%) |
Establishment and Operating Location | Kun Shan, China |
Percentage of Ownership (%) | 0.00% | 14.10%
ASE Assembly & Test (Shanghai) Limited [member] | Shanghai Ding Hui Real Estate Development Co., Ltd. [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%
ASE Assembly & Test (Shanghai) Limited [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%
ASE Assembly & Test (Shanghai) Limited [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%
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 Investment Kun Shan Limited [Member] | ASE (Kunshan) Inc. [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the packaging and testing of semiconductors |
Establishment and Operating Location | Kun Shan, China |
Percentage of Ownership (%) | 0.00% |
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] | ASE (Kunshan) Inc. [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the packaging and testing of semiconductors |
Establishment and Operating Location | Kun Shan, China |
Percentage of Ownership (%) | 0.00% |
ASE Mauritius Inc [Member] | ASE (Shanghai) Inc. [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 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%
ASE (Shanghai) Inc. [Member] | Shanghai Ding Hui Real Estate Development Co., Ltd. [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 (%) | 40.00% | 40.00%
ASE (Shanghai) Inc. [Member] | Advanced Semiconductor Engineering (HK) Limited [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the trading of substrates |
Establishment and Operating Location | Hong Kong |
Percentage of Ownership (%) | 100.00% | 100.00%
ASE (Shanghai) Inc. [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%
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 (%) | 77.30% | 77.20%
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. [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] | USI Electronics (Shenzhen) Co., Ltd. [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] | 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] | 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%
UGT [Member] | Universal Global Technology 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%
UGT [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%
UGT [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%
UGT [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%
UGT [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%
UGT [Member] | USI Electronics (Shenzhen) Co., Ltd. [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%
UGT [Member] | Universal Global Electronics Co., Ltd [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 |
Establishment and Operating Location | Hong Kong |
Percentage of Ownership (%) | 100.00% | 100.00%
UGT [Member] | Universal Scientific Industrial (France) ("USIFR") [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in investing activities |
Establishment and Operating Location | France |
Percentage of Ownership (%) | 100.00% | 100.00%
UGT [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%
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 Co., Ltd. [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%
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%
USIFR [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] | ASTEELFLASH GROUP [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Holding company (acquired 1 share from USIFR in October 2021 and merged by FAFG in January 2022 ) |
Establishment and Operating Location | France |
Percentage of Ownership (%) | 0.00% | 100.00%
FAFG [member] | MANUFACTURING POWER TUNISIA [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (acquired from ASTEELFLASH GROUP in January 2022) |
Establishment and Operating Location | Tunisia |
Percentage of Ownership (%) | 100.00% | 0.10%
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 (acquired from ASTEELFLASH GROUP in January 2022) |
Establishment and Operating Location | Mexico |
Percentage of Ownership (%) | 100.00% | 0.10%
FAFG [member] | ASTEELFLASH (BEDFORD) LIMITED [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (acquired from ASTEELFLASH GROUP in January 2022) |
Establishment and Operating Location | United Kingdom |
Percentage of Ownership (%) | 100.00% | 0.00%
FAFG [member] | ASTEELFLASH FRANCE [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (acquired from ASTEELFLASH GROUP in January 2022) |
Establishment and Operating Location | France |
Percentage of Ownership (%) | 99.90% | 0.00%
FAFG [member] | ASTEELFLASH TUNISIE S.A. [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (acquired from ASTEELFLASH GROUP in January 2022) |
Establishment and Operating Location | Tunisia |
Percentage of Ownership (%) | 100.00% | 0.00%
FAFG [member] | ASTEELFLASH HONG KONG LIMITED [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Holding company (acquired from ASTEELFLASH GROUP in January 2022) |
Establishment and Operating Location | Hong Kong |
Percentage of Ownership (%) | 100.00% | 0.00%
FAFG [member] | ASTEELFLASH GERMANY GmbH [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (acquired from ASTEELFLASH GROUP in January 2022) |
Establishment and Operating Location | Germany |
Percentage of Ownership (%) | 100.00% | 0.00%
FAFG [member] | ASTEELFLASH US HOLDING CORP [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Holding company (acquired from ASTEELFLASH GROUP in January 2022) |
Establishment and Operating Location | U.S.A. |
Percentage of Ownership (%) | 100.00% | 0.00%
FAFG [member] | AFERH TUNISIE [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the management, training and consulting of human resources (acquired from ASTEELFLASH GROUP in January 2022) |
Establishment and Operating Location | Tunisia |
Percentage of Ownership (%) | 0.50% | 0.00%
FAFG [member] | ASTEEL ELECTRONICS MANUFACTURING SERVICES [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (acquired from ASTEELFLASH GROUP in January 2022) |
Establishment and Operating Location | Tunisia |
Percentage of Ownership (%) | 0.10% | 0.00%
FAFG [member] | ASTEELFLASH PLZEN S.R.O. [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (acquired from ASTEELFLASH GROUP in January 2022) |
Establishment and Operating Location | Czech Republic |
Percentage of Ownership (%) | 100.00% | 0.00%
ASTEELFLASH GROUP [member] | MANUFACTURING POWER TUNISIA [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (disposed to FAFG in January 2022) |
Establishment and Operating Location | Tunisia |
Percentage of Ownership (%) | 0.00% | 99.90%
ASTEELFLASH GROUP [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 (disposed to FAFG in January 2022) |
Establishment and Operating Location | Mexico |
Percentage of Ownership (%) | 0.00% | 99.90%
ASTEELFLASH GROUP [member] | ASTEELFLASH (BEDFORD) LIMITED [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (disposed to FAFG in January 2022) |
Establishment and Operating Location | United Kingdom |
Percentage of Ownership (%) | 0.00% | 100.00%
ASTEELFLASH GROUP [member] | ASTEELFLASH FRANCE [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (disposed to FAFG in January 2022) |
Establishment and Operating Location | France |
Percentage of Ownership (%) | 0.00% | 99.90%
ASTEELFLASH GROUP [member] | ASTEELFLASH TUNISIE S.A. [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (disposed to FAFG in January 2022) |
Establishment and Operating Location | Tunisia |
Percentage of Ownership (%) | 0.00% | 100.00%
ASTEELFLASH GROUP [member] | ASTEELFLASH HONG KONG LIMITED [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Holding company (disposed to FAFG in January 2022) |
Establishment and Operating Location | Hong Kong |
Percentage of Ownership (%) | 0.00% | 100.00%
ASTEELFLASH GROUP [member] | ASTEELFLASH GERMANY GmbH [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (disposed to FAFG in January 2022) |
Establishment and Operating Location | Germany |
Percentage of Ownership (%) | 0.00% | 100.00%
ASTEELFLASH GROUP [member] | ASTEELFLASH US HOLDING CORP [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Holding company (disposed to FAFG in January 2022) |
Establishment and Operating Location | U.S.A. |
Percentage of Ownership (%) | 0.00% | 100.00%
ASTEELFLASH GROUP [member] | AFERH TUNISIE [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the management, training and consulting of human resources (disposed to FAFG in January 2022) |
Establishment and Operating Location | Tunisia |
Percentage of Ownership (%) | 0.00% | 0.50%
ASTEELFLASH GROUP [member] | ASTEEL ELECTRONICS MANUFACTURING SERVICES [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (disposed to FAFG in January 2022) |
Establishment and Operating Location | Tunisia |
Percentage of Ownership (%) | 0.00% | 0.10%
ASTEELFLASH GROUP [member] | ASTEELFLASH PLZEN S.R.O. [Member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the design and manufacturing of electronic components (disposed to FAFG in January 2022) |
Establishment and Operating Location | Czech Republic |
Percentage of Ownership (%) | 0.00% | 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] | 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 |
Establishment and Operating Location | France |
Percentage of Ownership (%) | 100.00% | 100.00%
ASTEELFLASH HONG KONG LIMITED [Member] | Asteelflash Suzhou Co., Ltd. |  |
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 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 GERMANY 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 GERMANY GmbH [member] | 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 GERMANY GmbH [member] | ASTEELFLASH EBERBACH 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 GERMANY GmbH [member] | ASTEELFLASH BONN 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 GERMANY GmbH [member] | ASTEELFLASH SCHWANDORF 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 GERMANY 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 GERMANY 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 Investment Co., Ltd. [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in investing activities (merged by SPIL in March 2022) |
Establishment and Operating Location | R.O.C. |
Percentage of Ownership (%) | 0.00% | 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 (B.V.I.) Holding Limited [Member] | Siliconware Investment Co., Ltd. [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 (Cayman) Holding Limited [Member] | Siliconware Electronics (Fujian) Co., Limited ("SF") [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%
ASE Technology Partners, Limited [Member] | ASE Technology Acquisition 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%
ASEN [Member] | ASE Advanced Semiconductor (Shanghai) Limited [member] |  |
Disclosure of subsidiaries [Line Items] |  |
Main Business | Engaged in the packaging and testing of semiconductors (acquired from Global Advanced Packaging Technology Limited in November 2021) |
Establishment and Operating Location | Shanghai, China |
Percentage of Ownership (%) | 0.00% |
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 |

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