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Inventories Related to Real Estate Business - Summary of Inventories Related to Real Estate Business (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2021 TWD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 TWD ($)
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Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |
Inventories related to real estate business | $ 5,412,114 | $ 195,102 | $ 13,471,645
Land and buildings held for sale [member] |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |
Inventories related to real estate business | 667,630 | 24,067 | 625,791
Construction in progress and machinery in transit [member] |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |
Inventories related to real estate business | 2,956,958 | 106,596 | 11,058,328
Land held for construction [member] |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |
Inventories related to real estate business | $ 1,787,526 | $ 64,439 | $ 1,787,526

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- Definition Inventories related to real estate business. + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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