Inventories Related to Real Estate Business - Summary of Inventories Related to Real Estate Business (Detail) $ in Thousands, $ in Thousands |
Dec. 31, 2023
TWD ($)
|
Dec. 31, 2023
USD ($)
|
Dec. 31, 2022
TWD ($)
|
|---|---|---|---|
| Disclosure of detailed information about property, plant and equipment [Line Items] | |||
| Inventories related to real estate business | $ 3,668,476 | $ 119,807 | $ 5,488,676 |
| Land and buildings held for sale [member] | |||
| Disclosure of detailed information about property, plant and equipment [Line Items] | |||
| Inventories related to real estate business | 666,665 | 21,772 | 678,080 |
| Construction in progress [member] | |||
| Disclosure of detailed information about property, plant and equipment [Line Items] | |||
| Inventories related to real estate business | 3,001,811 | 98,035 | 3,023,070 |
| Land held for construction [member] | |||
| Disclosure of detailed information about property, plant and equipment [Line Items] | |||
| Inventories related to real estate business | $ 0 | $ 0 | $ 1,787,526 |