Inventories Related to Real Estate Business - Summary of Inventories Related to Real Estate Business (Detail) $ in Thousands, $ in Thousands |
Dec. 31, 2025
TWD ($)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
TWD ($)
|
|---|---|---|---|
| Disclosure of detailed information about property, plant and equipment [Line Items] | |||
| Inventories related to real estate business | $ 3,710,017 | $ 118,266 | $ 3,866,994 |
| Land and buildings held for sale [member] | |||
| Disclosure of detailed information about property, plant and equipment [Line Items] | |||
| Inventories related to real estate business | 786,442 | 25,070 | 647,039 |
| Construction in progress [member] | |||
| Disclosure of detailed information about property, plant and equipment [Line Items] | |||
| Inventories related to real estate business | $ 2,923,575 | $ 93,196 | $ 3,219,955 |