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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, 2019 TWD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 TWD ($)
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Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |
Inventories related to real estate business | $ 11,416,726 | $ 381,703 | $ 10,060,608
Land and buildings held for sale [member] |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |
Inventories related to real estate business | 9,983 | 334 | 20,734
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 | 9,619,217 | 321,605 | 8,252,348
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 | $ 59,764 | $ 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 domain 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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