v3.24.1
Investments Accounted for Using the Equity Method - Summary of Investments in Associates Accounted for Using the Equity Method (Detail)
$ in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Jun. 30, 2023
Dec. 31, 2023
TWD ($)
Dec. 31, 2022
TWD ($)
Dec. 31, 2023
USD ($)
Disclosure of associates and joint ventures [line items]          
Investments in associates     $ 19,595,234 $ 14,163,995 $ 639,949
Yann Yuan Investment Co., Ltd. [member]          
Disclosure of associates and joint ventures [line items]          
Main Business     Engaged in investing activities    
Operating Location     R.O.C.    
Percentages of ownership held by the Group     27.94% 27.94%  
ChipMOS Technologies Inc. [member]          
Disclosure of associates and joint ventures [line items]          
Main Business     Engaged in the packaging and testing of semiconductors    
Operating Location     R.O.C.    
Percentages of ownership held by the Group     10.85% 10.85%  
MACHVISION Inc [Member]          
Disclosure of associates and joint ventures [line items]          
Main Business     Engaged in the manufacturing and trading of non-contact optical inspection equipment    
Operating Location     R.O.C.    
Percentages of ownership held by the Group     23.08% 0.00%  
Hung Ching Development & Construction Co. [member]          
Disclosure of associates and joint ventures [line items]          
Main Business     Engaged in the development, construction and leasing of real estate properties    
Operating Location     R.O.C.    
Percentages of ownership held by the Group     26.22% 26.22%  
M-Universe Investments Pte. Ltd. [member]          
Disclosure of associates and joint ventures [line items]          
Main Business     Investment company    
Operating Location     Singapore    
Percentages of ownership held by the Group     42.23% 42.23%  
CHIPLETZ [Member]          
Disclosure of associates and joint ventures [line items]          
Main Business     Fabless substrate design house    
Operating Location     U.S.A.    
Percentages of ownership held by the Group     19.43% 20.82%  
Hung Ching Kwan Co. [member]          
Disclosure of associates and joint ventures [line items]          
Main Business     Engaged in the leasing of real estate properties    
Operating Location     R.O.C.    
Percentages of ownership held by the Group     27.31% 27.31%  
QUESTYLE [member]          
Disclosure of associates and joint ventures [line items]          
Main Business     Engaged in the research and development on technology and sales of electronic products, digital products, audio equipment and spare parts, domestic trading; import and export business    
Operating Location     China    
Percentages of ownership held by the Group     6.67% 6.67%  
Deca Technologies Inc. [member]          
Disclosure of associates and joint ventures [line items]          
Main Business     Holding company with group engaged in the development of wafer level packaging    
Operating Location     U.S.A.    
Percentages of ownership held by the Group   17.84% 17.84% 17.85%  
Goodcare Holdings Inc [Member]          
Disclosure of associates and joint ventures [line items]          
Main Business     Holding company, engaged in operation investment, long-term care and home services business    
Operating Location     R.O.C.    
Percentages of ownership held by the Group 49.00%   49.00% 0.00%  
Cost [member]          
Disclosure of associates and joint ventures [line items]          
Investments in associates before deferred gain on transfer of land     $ 19,895,383 $ 14,464,144 649,751
Cost [member] | Yann Yuan Investment Co., Ltd. [member]          
Disclosure of associates and joint ventures [line items]          
Investments in associates before deferred gain on transfer of land     10,250,888 7,494,541 334,778
Cost [member] | ChipMOS Technologies Inc. [member]          
Disclosure of associates and joint ventures [line items]          
Investments in associates before deferred gain on transfer of land     2,786,339 2,748,810 90,997
Cost [member] | MACHVISION Inc [Member]          
Disclosure of associates and joint ventures [line items]          
Investments in associates before deferred gain on transfer of land     2,123,368 0 69,346
Cost [member] | Hung Ching Development & Construction Co. [member]          
Disclosure of associates and joint ventures [line items]          
Investments in associates before deferred gain on transfer of land     2,035,230 1,597,745 66,467
Cost [member] | M-Universe Investments Pte. Ltd. [member]          
Disclosure of associates and joint ventures [line items]          
Investments in associates before deferred gain on transfer of land     2,072,314 2,090,663 67,678
Cost [member] | CHIPLETZ [Member]          
Disclosure of associates and joint ventures [line items]          
Investments in associates before deferred gain on transfer of land     248,209 145,640 8,106
Cost [member] | Hung Ching Kwan Co. [member]          
Disclosure of associates and joint ventures [line items]          
Investments in associates before deferred gain on transfer of land     232,446 244,516 7,591
Cost [member] | QUESTYLE [member]          
Disclosure of associates and joint ventures [line items]          
Investments in associates before deferred gain on transfer of land     72,421 88,189 2,365
Cost [member] | Deca Technologies Inc. [member]          
Disclosure of associates and joint ventures [line items]          
Investments in associates before deferred gain on transfer of land     53,357 54,040 1,743
Cost [member] | Goodcare Holdings Inc [Member]          
Disclosure of associates and joint ventures [line items]          
Investments in associates before deferred gain on transfer of land     20,811   680
Deferred gain on transfer of land [member]          
Disclosure of associates and joint ventures [line items]          
Investments in associates     $ 300,149 $ 300,149 $ 9,802