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Investments Accounted for Using the Equity Method - Summary of Investments in Associates Accounted for Using the Equity Method (Detail)
$ in Thousands, $ in Thousands
 12 Months Ended
Nov. 30, 2022
Dec. 31, 2022
TWD ($)
Dec. 31, 2021
TWD ($)
Dec. 31, 2022
USD ($)
Disclosure of associates and joint ventures [line items]        
Investments in associates   $ 14,163,995 $ 16,500,670 $ 460,918
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% 29.45%  
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%  
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%  
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%  
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%  
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   20.82% 20.82%  
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 and interconnect technology    
Operating Location   U.S.A.    
Percentages of ownership held by the Group   17.85% 17.85%  
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% 0.00%  
Cost [member]        
Disclosure of associates and joint ventures [line items]        
Investments in associates before deferred gain on transfer of land   $ 14,464,144 $ 16,800,819 470,685
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   7,494,541 9,873,978 243,884
Cost [member] | ChipMOS Technologies Inc. [member]        
Disclosure of associates and joint ventures [line items]        
Investments in associates before deferred gain on transfer of land   2,748,810 2,717,250 89,450
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   2,090,663 1,859,542 68,033
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   1,597,745 1,828,921 51,993
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   244,516 258,757 7,957
Cost [member] | CHIPLETZ [Member]        
Disclosure of associates and joint ventures [line items]        
Investments in associates before deferred gain on transfer of land   145,640 210,937 4,739
Cost [member] | Deca Technologies Inc. [member]        
Disclosure of associates and joint ventures [line items]        
Investments in associates before deferred gain on transfer of land   54,040 51,434 1,759
Cost [member] | QUESTYLE [member]        
Disclosure of associates and joint ventures [line items]        
Investments in associates before deferred gain on transfer of land   88,189 0 2,870
Deferred gain on transfer of land [member]        
Disclosure of associates and joint ventures [line items]        
Investments in associates   $ 300,149 $ 300,149 $ 9,767