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Net Revenue - Summary of Disaggregation of Revenue from Contracts with Customers Based on Resolution (Detail) - TWD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers $ 2,894,307.7 $ 2,161,735.8 $ 2,263,891.3
Wafer [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 2,514,461.3 1,882,518.1 1,991,855.9
Wafer [member] | 3-nanometer [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 459,530.2 108,045.3  
Wafer [member] | 5-nanometer [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 861,318.9 629,300.4 508,689.9
Wafer [member] | 7-nanometer [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 416,790.3 357,270.7 535,178.7
Wafer [member] | 16-nanometer [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 202,383.7 191,306.1 258,544.3
Wafer [member] | 20-nanometer [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 4,077.2 10,359.0 8,853.3
Wafer [member] | 28-nanometer [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 188,155.0 186,924.9 206,611.9
Wafer [member] | 40/45-nanometer [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 108,468.2 114,667.4 145,546.2
Wafer [member] | 65-nanometer [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 93,120.1 107,425.4 93,288.6
Wafer [member] | 90-nanometer [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 21,509.3 25,642.0 40,184.2
Wafer [member] | 0.11/0.13 micron [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 52,442.8 47,149.3 57,992.3
Wafer [member] | 0.15/0.18 micron [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers 90,796.8 86,614.2 110,571.2
Wafer [member] | 0.25 micron and above [member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenue from contracts with customers $ 15,868.8 $ 17,813.4 $ 26,395.3