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Related Party Transactions - Summary of Compensation to Key Management Personnel (Detail)
$ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2024
TWD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
TWD ($)
Dec. 31, 2022
TWD ($)
Disclosure of transactions between related parties [abstract]        
Short-term employee benefits $ 1,350,476 $ 41,186 $ 1,390,127 $ 1,962,298
Post-employment benefits 3,288 100 3,841 4,344
Share-based payments 229,697 7,005 21,033 445,287
Total $ 1,583,461 $ 48,291 $ 1,415,001 $ 2,411,929