v3.24.1
Operating Segments Information - Summary of Revenue from Major Products and Services (Detail)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2023
TWD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
TWD ($)
Dec. 31, 2021
TWD ($)
Disclosure of products and services [line items]        
Operating revenue $ 581,914,471 $ 19,004,392 $ 670,872,643 $ 569,997,133
Packaging service [member]        
Disclosure of products and services [line items]        
Operating revenue 256,805,887 8,386,868 303,947,502 272,543,899
Testing service [member]        
Disclosure of products and services [line items]        
Operating revenue 49,879,923 1,628,998 55,960,182 49,978,736
EMS [member]        
Disclosure of products and services [line items]        
Operating revenue 268,218,002 8,759,569 301,966,818 239,488,267
Other products and services [member]        
Disclosure of products and services [line items]        
Operating revenue $ 7,010,659 $ 228,957 $ 8,998,141 $ 7,986,231