Lease Arrangements - Summary of Lease Liabilities (Detail) $ in Thousands, $ in Thousands |
Dec. 31, 2025
TWD ($)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
TWD ($)
|
|---|---|---|---|
| Lease liabilities [abstract] | |||
| Current | $ 969,441 | $ 30,903 | $ 986,489 |
| Non-current | $ 7,878,666 | $ 251,153 | $ 6,825,534 |