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Inventories (Tables) | 12 Months Ended
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Dec. 31, 2023
Text Block [Abstract] |
Summary of Inventories |
|  | December 31, 2022 |  | December 31, 2023
|  |  |  | NT$ |  |  |  |  |  |  | NT$ |  |  |
|  |  |  | (In Millions) |  |  |  |  |  |  | (In Millions) |  |  |
Finished goods |  |  |  | $ | 54,818.4 |  |  |  |  |  |  | $ | 34,511.0 |  |  |
Work in process |  |  |  |  | 125,661.9 |  |  |  |  |  |  |  | 156,498.5 |  |  |
Raw materials |  |  |  |  | 20,389.1 |  |  |  |  |  |  |  | 38,818.3 |  |  |
Supplies and spare parts |  |  |  |  | 20,279.7 |  |  |  |  |  |  |  | 21,169.3 |  |  |
|  |  |  | $ | 221,149.1 |  |  |  |  |  |  | $ | 250,997.1 |  |  |
Inventory write downs | Write-down of inventories to net realizable value and reversal of write-down of inventories resulting from the increase in net realizable value were included in the cost of revenue. The amounts are illustrated below:
|  | Years Ended December 31
|  | 2021 |  | 2022 |  | 2023
|  | NT$ |  | NT$ |  | NT$
|  | (In Millions) |  | (In Millions) |  | (In Millions)
Net inventory losses |  |  |  | $ | 533.0 |  |  |  |  |  |  | $ | 4,689.1 |  |  |  |  |  |  | $ | 3,494.6 |  |  |

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