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Financial Instruments - Summary of Categories of Financial Instruments (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2024 TWD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 TWD ($)
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Disclosure of detailed information about financial instruments [line items] |  |  |
Mandatorily at FVTPL | $ 10,832,042 | $ 330,346 | $ 6,628,690
Measured at amortized cost (Note 1) | 191,953,553 | 5,854,028 | 183,248,314
Trade receivables, net | 113,419,820 | 3,458,976 | 99,536,761
Held for trading | 243,752 | 7,433 | 1,302,342
Contingent considerations | 589,117 | 17,966 |
Financial liabilities for hedging | 12,456,104 | 379,875 | 12,516,971
Measured at amortized cost (Note 2) | 344,543,769 | 10,507,587 | 295,416,495
Financial assets at fair value through other comprehensive income, category [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Equity instruments | 12,933,733 | 394,441 | 620,831
Debt instruments | 1,025,760 | 31,283 | 1,042,906
Trade receivables, net | $ 6,532,508 | $ 199,222 | $ 5,637,485

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