Cash Flow Information - Summary of Non-cash Activities (Detail) $ in Thousands, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2025
TWD ($)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
TWD ($)
|
Dec. 31, 2023
TWD ($)
|
|
| Payments for property, plant and equipment | ||||
| Purchase of property, plant and equipment | $ 171,616,529 | $ 5,470,721 | $ 96,207,546 | $ 48,758,649 |
| Increase (decrease) in other non-current assets | 540,939 | 17,244 | 1,210,888 | (387,233) |
| Decrease (increase) in other payables | (6,846,985) | (218,265) | (17,610,885) | 5,894,525 |
| Capitalized borrowing costs | (667,981) | (21,294) | (285,611) | (107,712) |
| Payments for property, plant and equipment | 164,642,502 | 5,248,406 | 79,521,938 | 54,158,229 |
| Proceeds from disposal of property, plant and equipment | ||||
| Consideration from disposal of property, plant and equipment | 2,866,369 | 91,373 | 887,718 | 334,348 |
| Decrease (increase) in other receivables | (373,255) | (11,899) | 821 | 132,790 |
| Decrease in other current assets | 0 | 0 | 19,514 | 8,188 |
| Proceeds from disposal of property, plant and equipment | 2,493,114 | 79,474 | 908,053 | 475,326 |
| Payments for FVTOCI [Abstract] | ||||
| Increase in FVTOCI | 478,350 | 15,249 | 12,150,760 | 184,355 |
| Decrease in other receivables | 0 | 0 | (12,137,200) | 0 |
| Increase In Fair Value Through Other Comprehensive Income | $ 478,350 | $ 15,249 | $ 13,560 | $ 184,355 |