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Contents of Significant Accounts - Accounts Receivable, Net (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2024
TWD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
TWD ($)
Disclosure of financial assets [line items]      
Accounts receivable $ 32,723,426 $ 997,970 $ 29,237,550
Cost [member]      
Disclosure of financial assets [line items]      
Accounts receivable 32,734,422   29,316,612
Loss Allowance [member]      
Disclosure of financial assets [line items]      
Less: loss allowance $ (10,996)   $ (79,062)