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Net Revenue - Summary of Disaggregation of Revenue from Contracts with Customers by Geographical Location (Detail) - TWD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers $ 2,161,735.8 $ 2,263,891.3 $ 1,587,415.0
Taiwan [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 149,777.4 210,470.8 203,963.7
United States [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 1,408,841.9 1,493,328.8 1,015,996.4
China [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 267,154.1 245,168.8 164,552.1
Japan [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 132,072.0 119,099.3 71,920.8
Europe, the Middle East and Africa [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 117,348.2 123,767.1 89,010.1
Other country [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers $ 86,542.2 $ 72,056.5 $ 41,971.9