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Trade Receivables, Net - Summary of Trade Receivables, Net (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2024
TWD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
TWD ($)
Disclosure of financial assets [Line Items]      
Trade receivables $ 106,887,312 $ 3,259,754 $ 93,899,276
At FVTOCI 6,532,508 199,222 5,637,485
Total trade receivables 113,419,820 3,458,976 99,536,761
Cost [member]      
Disclosure of financial assets [Line Items]      
Trade receivables 107,294,445 3,272,170 94,232,032
Allowance for doubtful debts [member]      
Disclosure of financial assets [Line Items]      
Trade receivables $ 407,133 $ 12,416 $ 332,756