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Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2024
TWD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
TWD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
TWD ($)
Dec. 31, 2021
TWD ($)
Cash and cash equivalents [abstract]            
Cash on hand $ 5,204 $ 159 $ 4,623      
Checking accounts and demand deposits 54,752,776 1,669,801 55,972,581      
Cash equivalents (time deposits with original maturity of less than three months) 21,734,844 662,850 11,307,314      
Cash and cash equivalents,total $ 76,492,824 $ 2,332,810 $ 67,284,518 $ 2,051,983 $ 58,040,394 $ 76,073,345