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Trade Receivables, Net - Summary of Trade Receivables, Net (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2022
TWD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
TWD ($)
Disclosure of financial assets [Line Items]      
Trade receivables $ 109,244,285 $ 3,554,972 $ 109,369,478
At FVTOCI 5,402,714 175,812 6,092,462
Total trade receivable 114,646,999 3,730,784 115,462,210
Cost [member]      
Disclosure of financial assets [Line Items]      
Trade receivables 109,408,693 3,560,322 109,473,101
Allowance for doubtful debts [member]      
Disclosure of financial assets [Line Items]      
Trade receivables $ 164,408 $ 5,350 $ 103,353