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Other Assets - Summary of Other Assets (Detail) $ in Millions, $ in Millions | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($)
--- | --- | --- | ---
Miscellaneous assets [abstract] |  |  |
Spare parts | $ 2,233 |  | $ 3,380
Refundable deposits | 1,995 |  | 1,964
Other financial assets | 1,000 |  | 1,000
Others | 1,634 |  | 1,741
Other assets | 7,451 |  | 8,260
Others | 589 |  | 175
Other current assets | 2,822 | $ 92 | 3,555
Others | 2,223 |  | 1,916
Other noncurrent assets | $ 4,629 | $ 151 | $ 4,705

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