Profit Before Income Tax - Summary of Finance Costs (Detail) $ in Thousands, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2025
TWD ($)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
TWD ($)
|
Dec. 31, 2023
TWD ($)
|
|
| Analysis of income and expense [abstract] | ||||
| Interest on lease liabilities | $ 196,688 | $ 6,270 | $ 184,970 | $ 148,916 |
| Interest on borrowings and bonds payable | 7,725,331 | 246,265 | 6,848,484 | 6,197,706 |
| Other interest expenses | 224,362 | 7,152 | ||
| Total interest expense for financial liabilities measured at amortized cost | 8,146,381 | 259,687 | 7,033,454 | 6,346,622 |
| Less: Amounts included in the cost of qualifying assets | ||||
| Property, plant and equipment | (667,981) | (21,294) | (285,611) | (107,712) |
| Interest expense | 7,478,400 | 238,393 | 6,747,843 | 6,238,910 |
| Other finance costs | 24,869 | 793 | 29,189 | 33,176 |
| Finance costs | $ 7,503,269 | $ 239,186 | $ 6,777,032 | $ 6,272,086 |