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Cash and Cash Equivalents (Tables) | 12 Months Ended
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Dec. 31, 2023
Cash and cash equivalents [abstract] |
Summary of Cash and Cash Equivalents |
|  | December 31 |
|  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |
|  | (In Millions) |
Cash |  |  |  |  |  |
Cash on hand |  | $ | 472 |  |  | $ | 404 |
Bank deposits |  |  | 10,423 |  |  |  | 9,522 |
|  |  | 10,895 |  |  |  | 9,926 |
Cash equivalents (with maturities of less than three months) |  |  |  |  |  |
Commercial paper |  | $ | 19,592 |  |  | $ | 14,496 |
Negotiable certificates of deposit |  |  | 15,500 |  |  |  | 5,900 |
Time deposits |  |  | 4,206 |  |  |  | 3,502 |
Stimulus vouchers |  |  | — |  |  |  | — |
|  |  | 39,298 |  |  |  | 23,898 |
|  | $ | 50,193 |  |  | $ | 33,824 |
Annual Yield Rates of Bank Deposits, Commercial Paper, Negotiable Certificates of Deposit and Time Deposits and Repurchase Agreements Collateralized by Bonds |
|  | December 31
|  | 2022 |  | 2023
Bank deposits |  | 0.00%-2.62% |  | 0.00%-3.10%
Commercial paper |  | 0.56%-1.30% |  | 0.72%-1.33%
Negotiable certificates of deposit |  | 1.20%-1.45% |  | 1.38%
Time deposits |  | 0.01%-4.65% |  | 0.01%-5.50%

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