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Operating Segments Information - Geographic Information (Detail) - TWD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Disclosure of geographical areas [line items]    
Non-current Assets $ 3,137,675.8 $ 2,769,301.3
Taiwan [member]    
Disclosure of geographical areas [line items]    
Non-current Assets 2,525,608.4 2,510,238.7
United States [member]    
Disclosure of geographical areas [line items]    
Non-current Assets 420,093.1 153,137.8
China [member]    
Disclosure of geographical areas [line items]    
Non-current Assets 97,268.8 90,349.7
Japan [member]    
Disclosure of geographical areas [line items]    
Non-current Assets 94,558.9 15,432.5
Europe, the Middle East and Africa [member]    
Disclosure of geographical areas [line items]    
Non-current Assets 146.2 140.7
Others [member]    
Disclosure of geographical areas [line items]    
Non-current Assets $ 0.4 $ 1.9