XML 170 R152.htm IDEA: XBRL DOCUMENT v3.25.1
Financial Risk Management and Fair Values of Financial Instruments - Summary of Loss Rate Methodology (Detail) - TWD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Contract assets [member]    
Disclosure of detailed information about financial instruments [Line Items]    
Expected loss rate 0.03% 0.045%
Total carrying amount $ 397,866 $ 384,057
Loss allowance $ (119) $ (174)
Accounts receivable including related parties [member]    
Disclosure of detailed information about financial instruments [Line Items]    
Expected loss rate 0.03% 0.045%
Total carrying amount $ 5,011,644 $ 5,328,835
Loss allowance $ (1,490) $ (2,454)
Other receivable including related parties [member]    
Disclosure of detailed information about financial instruments [Line Items]    
Expected loss rate 0.03% 0.045%
Total carrying amount $ 77,632 $ 44,589
Loss allowance $ (12) $ (13)