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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, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers $ 2,263,891.3 $ 1,587,415.0 $ 1,339,254.8
Taiwan [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 210,470.8 203,963.7 129,082.9
United States [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 1,493,328.8 1,015,996.4 817,911.0
China [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 245,168.8 164,552.1 233,783.3
Europe, the Middle East and Africa [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 123,767.1 89,010.1 70,213.4
Japan [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 119,099.3 71,920.8 63,299.2
Other country [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers $ 72,056.5 $ 41,971.9 $ 24,965.0