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Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2022
TWD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
TWD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
TWD ($)
Dec. 31, 2019
TWD ($)
Cash and cash equivalents [abstract]            
Cash on hand $ 5,989 $ 195 $ 5,638      
Checking accounts and demand deposits 47,632,415 1,550,030 47,094,687      
Cash equivalents (time deposits with original maturity of less than three months and repurchase agreements collateralized by bonds) 10,401,990 338,496 28,973,020      
Cash and cash equivalents,total $ 58,040,394 $ 1,888,721 $ 76,073,345 $ 2,475,540 $ 51,538,071 $ 60,130,875