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Capital Management - Percentages of Liabilities to Assets Ratio Used for Monitoring Capital (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2022
TWD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
TWD ($)
Disclosure of objectives, policies and processes for managing capital [abstract]      
Total liabilities $ 20,303,685 $ 660,712 $ 18,380,369
Total assets $ 44,942,945 $ 1,462,510 $ 42,522,584
Liabilities to assets ratio 45.18% 45.18% 43.22%