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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 ($)
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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%

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