Trade Receivables, Net - Summary of Trade Receivables, Net (Detail) $ in Thousands, $ in Thousands |
Dec. 31, 2025
TWD ($)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
TWD ($)
|
|---|---|---|---|
| Disclosure of financial assets [Line Items] | |||
| Trade receivables | $ 118,859,410 | $ 3,788,951 | $ 106,887,312 |
| At FVTOCI | 6,182,804 | 197,093 | 6,532,508 |
| Total trade receivables | 125,042,214 | 3,986,044 | 113,419,820 |
| Cost [member] | |||
| Disclosure of financial assets [Line Items] | |||
| Trade receivables | 119,393,787 | 3,805,986 | 107,294,445 |
| Allowance for doubtful debts [member] | |||
| Disclosure of financial assets [Line Items] | |||
| Trade receivables | $ 534,377 | $ 17,035 | $ 407,133 |