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Investment Properties - Additional Information (Detail) - TWD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2022
Disclosure of detailed information about investment property [line items]
Adjustment to rent income		$ 114,538
Bottom of range [member]
Disclosure of detailed information about investment property [line items]
Operating lease Term	1 year
Top of range [member]
Disclosure of detailed information about investment property [line items]
Operating lease Term	20 years

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- Definition

Adjustment to rent income.

+ References

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- Definition

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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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