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Investments Accounted for Using the Equity Method - Summary of Aggregate Information of Associates that are Not Individually Material (Detail)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2022
TWD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
TWD ($)
Dec. 31, 2020
TWD ($)
Disclosure of associates and joint ventures [line items]        
Net income $ 64,618,094 $ 2,102,770 $ 62,249,997 $ 28,651,900
Other comprehensive income 8,632,472 280,913 406,016 495,313
Total comprehensive income 73,250,566 2,383,683 62,656,013 29,147,213
Associates that are not individually material [member]        
Disclosure of associates and joint ventures [line items]        
Net income 1,083,538 35,260 872,697 545,833
Other comprehensive income (3,082,307) (100,303) 3,624,403 2,784,094
Total comprehensive income $ (1,998,769) $ (65,043) $ 4,497,100 $ 3,329,927