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Cash and Cash Equivalents (Tables) | 12 Months Ended
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Dec. 31, 2024
Texts Block [Abstract] |
Summary of Cash and Cash Equivalents |
|  | December 31, 2023 |  |  | December 31, 2024 |
|  |  |  |  | NT$ |  |  |  |  |  |  |  |  | NT$ |  |  |  |
|  |  |  |  | (In Millions) |  |  |  |  |  |  |  |  | (In Millions) |  |  |  |
Cash and deposits in banks |  |  |  |  |  | $ | 1,453,101.6 |  |  |  |  |  |  |  |  |  |  | $ | 2,120,674.8 |  |  |  |  |
Money market funds |  |  |  |  |  |  | 10,898.7 |  |  |  |  |  |  |  |  |  |  |  | 2,826.7 |  |  |  |  |
Repurchase agreements |  |  |  |  |  |  | 1,346.7 |  |  |  |  |  |  |  |  |  |  |  | 2,127.0 |  |  |  |  |
Commercial paper |  |  |  |  |  |  | 30.0 |  |  |  |  |  |  |  |  |  |  |  | 1,998.5 |  |  |  |  |
Government bonds/Agency bonds |  |  |  |  |  |  | 50.8 |  |  |  |  |  |  |  |  |  |  |  | - |  |  |  |  |
|  |  |  |  |  | $ | 1,465,427.8 |  |  |  |  |  |  |  |  |  |  | $ | 2,127,627.0 |  |  |  |  |

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