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Contents of Significant Accounts - Accounts Receivable, Net (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2023
TWD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
TWD ($)
Disclosure of financial assets [line items]      
Accounts receivable $ 29,237,550 $ 954,851 $ 36,444,510
Cost [member]      
Disclosure of financial assets [line items]      
Accounts receivable 29,316,612   36,653,611
Loss Allowance [member]      
Disclosure of financial assets [line items]      
Less: loss allowance $ (79,062)   $ (209,101)