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Profit Before Income Tax - Summary of Other Operating Income and Expenses, Net (Detail)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2022
TWD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
TWD ($)
Dec. 31, 2020
TWD ($)
Analysis of income and expense [abstract]        
Rental income $ 656,745 $ 21,372 $ 175,373 $ 153,682
Gain on disposal of property, plant and equipment 113,356 3,689 71,770 460,868
Royalty income 638,867 20,790 135,400  
Impairment loss on non-financial assets (Notes 15 and 19) (327,569) (10,660) (126,766) (992,273)
Others (67,071) (2,183) 934,052 880,215
Other operating income and expenses, net $ 1,014,328 $ 33,008 $ 1,189,829 $ 502,492