v3.24.1
Operating Segments Information - Summary of Geographical Information (Detail)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2023
TWD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
TWD ($)
Dec. 31, 2021
TWD ($)
Dec. 31, 2023
USD ($)
Disclosure of geographical areas [line items]          
Operating revenue $ 581,914,471 $ 19,004,392 $ 670,872,643 $ 569,997,133  
Noncurrent assets, excluding financial instruments, post-employment benefit assets and deferred tax assets 369,608,094   377,857,333   $ 12,070,806
United States [Member]          
Disclosure of geographical areas [line items]          
Operating revenue 370,306,818 12,093,627 446,484,639 353,500,361  
Taiwan [member]          
Disclosure of geographical areas [line items]          
Operating revenue 70,492,517 2,302,172 83,655,142 94,598,067  
Noncurrent assets, excluding financial instruments, post-employment benefit assets and deferred tax assets 258,813,497   268,036,245   8,452,433
Asia [Member]          
Disclosure of geographical areas [line items]          
Operating revenue 75,316,422 2,459,713 75,991,902 62,523,167  
Europe [Member]          
Disclosure of geographical areas [line items]          
Operating revenue 65,026,966 2,123,676 63,542,468 57,910,641  
Other geographical areas [member]          
Disclosure of geographical areas [line items]          
Operating revenue 771,748 $ 25,204 1,198,492 $ 1,464,897  
Noncurrent assets, excluding financial instruments, post-employment benefit assets and deferred tax assets 44,134,206   40,537,349   1,441,352
China [member]          
Disclosure of geographical areas [line items]          
Noncurrent assets, excluding financial instruments, post-employment benefit assets and deferred tax assets $ 66,660,391   $ 69,283,739   $ 2,177,021