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Bonds Payable (Tables) | 12 Months Ended
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Dec. 31, 2024
Disclosure Of Bonds Payable [Abstract] |
Summary of Bonds Payable |
|  | December 31 |
|  | 2023 |  |  | 2024 |
|  | NT$ |  |  | NT$ |
|  | (In Millions) |
Unsecured domestic bonds |  | $ | 30,500 |  |  | $ | 30,500 |
Less: Discounts on bonds payable |  |  | (17 | ) |  |  | (12 | )
|  | $ | 30,483 |  |  | $ | 30,488 |
Less: Current portion |  |  | — |  |  |  | (8,799 | )
|  | $ | 30,483 |  |  | $ | 21,689 |
Summary of Major Terms of Unsecured Domestic Bonds Issued | The major terms of unsecured domestic bonds issued by Chunghwa were as follows:
Issuance |  | Tranche |  | Issuance Period |  | Total Amount |  |  | Coupon Rate |  | Repayment and Interest Payment
2020-1 |  | A |  | July 2020 to July 2025 |  | $ | 8,800 |  |  | 0.50% |  | One-time repayment upon maturity; interest payable annually
|  | B |  | July 2020 to July 2027 |  |  | 7,500 |  |  | 0.54% |  | The same as above
|  | C |  | July 2020 to July 2030 |  |  | 3,700 |  |  | 0.59% |  | The same as above
2021-1 |  | A |  | April 2021 to April 2026 |  |  | 1,900 |  |  | 0.42% |  | The same as above
|  | B |  | April 2021 to April 2028 |  |  | 4,100 |  |  | 0.46% |  | The same as above
|  | C |  | April 2021 to April 2031 |  |  | 1,000 |  |  | 0.50% |  | The same as above
2022-1 (Sustainable Bond) |  | — |  | March 2022 to March 2027 |  |  | 3,500 |  |  | 0.69% |  | The same as above

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