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Cash Flow Information - Summary of Non-cash Investing Activities (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2024 TWD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 TWD ($) | Dec. 31, 2022 TWD ($)
Payments for property, plant and equipment |  |  |  |
Purchase of property, plant and equipment | $ 96,207,546 | $ 2,934,052 | $ 48,758,649 | $ 75,800,574
Increase (decrease) in other non-current assets | 1,210,888 | 36,928 | (387,233) | (5,480)
Decrease (increase) in other payables | (17,610,885) | (537,081) | 5,894,525 | (3,096,926)
Capitalized borrowing costs | (285,611) | (8,710) | (107,712) | (58,263)
Payments for property, plant and equipment | 79,521,938 | 2,425,189 | 54,158,229 | 72,639,905
Proceeds from disposal of property, plant and equipment |  |  |  |
Consideration from disposal of property, plant and equipment | 887,718 | 27,072 | 334,348 | 612,213
Decrease (increase) in other receivables | 821 | 26 | 132,790 | 2,784
Decrease in other current assets | 19,514 | 595 | 8,188 |
Decrease in other non-current assets | 0 | 0 | 0 | 134,760
Proceeds from disposal of property, plant and equipment | 908,053 | 27,693 | 475,326 | 749,757
Payments for FVTOCI [Abstract] |  |  |  |
Increase in FVTOCI (Note 38) | 12,150,760 | 370,563 | 0 | 0
Decrease in other receivables | (12,137,200) | (370,150) | 0 | 0
Increase In Fair Value Through Other Comprehensive Income | $ 13,560 | $ 413 | $ 0 | $ 0

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