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Related Parties Transactions (Tables) | 12 Months Ended
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Dec. 31, 2023
Related party transactions [abstract] |
Summary of Related Parties |
Company |  | Relationship
Taiwan International Standard Electronics Co., Ltd. |  | Associate
So-net Entertainment Taiwan Limited |  | Associate
KKBOX Taiwan Co., Ltd. |  | Associate
KingwayTek Technology Co., Ltd. |  | Associate
Taiwan International Ports Logistics Corporation |  | Associate
Senao Networks, Inc. |  | Associate
EnGenius Networks Inc. |  | Subsidiary of the Company’s associate, Senao Networks, Inc.
EnRack Technology Co., Ltd. |  | Subsidiary of the Company’s associate, Senao Networks, Inc.
Emplus Technologies, Inc. |  | Subsidiary of the Company’s associate, Senao Networks, Inc.
ST-2 Satellite Ventures Pte., Ltd. |  | Associate
CHT Infinity Singapore Pte. Ltd. |  | Associate
Viettel-CHT Co., Ltd. |  | Associate
PT. CHT Infinity Indonesia |  | Subsidiary of the Company’s associate, CHT Infinity Singapore Pte. Ltd.
Click Force Co., Ltd. |  | Associate
(Continued)
Company |  | Relationship
Alliance Digital Tech Co., Ltd. |  | Associate (Note 1)
Chunghwa PChome Fund I Co., Ltd. |  | Associate
Cornerstone Ventures Co., Ltd. |  | Associate
Next Commercial Bank Co., Ltd. |  | Associate
WiAdvance Technology Corporation |  | Associate
AgriTalk Technology Inc. |  | Associate (Note 2)
Imedtac Co., Ltd. |  | Associate (Note 2)
Baohwa Trust Co., Ltd. |  | Associate
Chunghwa SEA Holdings |  | Joint venture
Other related parties |  |
Chunghwa Telecom Foundation |  | A nonprofit organization of which the funds donated by Chunghwa exceeds one third of its total funds
Senao Technical and Cultural Foundation |  | A nonprofit organization of which the funds donated by SENAO exceeds one third of its total funds
Sochamp Technology Co., Ltd. |  | Investor of significant influence over CHST
Tsann Kuen Enterprise Co., Ltd. |  | Substantial related party of SENAO
E-Life Mall Co., Ltd. |  | Substantial related party of SENAO
Engenius Technologies Co., Ltd. |  | Substantial related party of SENAO
Cheng Keng Investment Co., Ltd. |  | Substantial related party of SENAO
Cheng Feng Investment Co., Ltd. |  | Substantial related party of SENAO
All Oriented Investment Co., Ltd. |  | Substantial related party of SENAO
Hwa Shun Investment Co., Ltd. |  | Substantial related party of SENAO
Yu Yu Investment Co., Ltd. |  | Substantial related party of SENAO
Divine Fine Foods & Wine Inc. |  | Substantial related party of SENAO (Note 3)
Kangsin Co., Ltd. |  | Substantial related party of SENAO
United Daily News Co., Ltd. |  | Investor of significant influence over SFD
Shenzhen Century Communication Co., Ltd. |  | Investor of significant influence over SCT
Advantech Co., Ltd. |  | Investor of significant influence over IISI
Z-Com, Inc. |  | Investor of significant influence over CHST
(Concluded) Note 1: ADT completed its liquidation in August 2021. Please refer to Note 15. Note 2: ATT and IME were previously treated as financial assets at FVOCI. As the Company acquired seats in the Board of Directors of each company and has significant influence over ATT and IME in July and August 2021, respectively, these investments are reclassified as associates. Please refer to Note 15. Note 3: Divine Fine Foods & Wine Inc. replaced its responsible persons in October 2021. Since then, Divine Fine Foods & Wine Inc. is no longer a related party of the Company. 1) Operating transactions
|  | Revenues |
|  | Year Ended December 31 |
|  | 2021 |  |  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  | (In Millions) |
Associates |  | $ | 499 |  |  | $ | 417 |  |  | $ | 403 |
Others |  |  | 55 |  |  |  | 61 |  |  |  | 57 |
|  | $ | 554 |  |  | $ | 478 |  |  | $ | 460 |
|  | Operating Costs and Expenses |
|  | Year Ended December 31 |
|  | 2021 |  |  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  | (In Millions) |
Associates |  | $ | 853 |  |  | $ | 1,247 |  |  | $ | 1,322 |
Others |  |  | 74 |  |  |  | 80 |  |  |  | 74 |
|  | $ | 927 |  |  | $ | 1,327 |  |  | $ | 1,396 |
2) Non-operating transactions
|  | Non-operating Income and Expenses |
|  | Year Ended December 31 |
|  | 2021 |  |  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  |  |  |  | (In Millions) |  |  |  |
Associates |  | $ | 38 |  |  | $ | 37 |  |  | $ | 38 |
Others |  |  | 3 |  |  |  | 2 |  |  |  | 2 |
|  | $ | 41 |  |  | $ | 39 |  |  | $ | 40 |
3) Receivables
|  | December 31 |
|  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |
|  | (In Millions) |
Associates |  | $ | 70 |  |  | $ | 76 |
Others |  |  | 5 |  |  |  | 2 |
|  | $ | 75 |  |  | $ | 78 |
4) Payables
|  | December 31 |
|  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |
|  | (In Millions) |
Associates |  | $ | 534 |  |  | $ | 381 |
Others |  |  | 5 |  |  |  | 4 |
|  | $ | 539 |  |  | $ | 385 |
5) Customers’ deposits
|  | December 31 |
|  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |
|  | (In Millions) |
Associates |  | $ | 69 |  |  | $ | 20 |
Others |  |  | — |  |  |  | — |
|  | $ | 69 |  |  | $ | 20 |
6) Acquisition of property, plant and equipment
|  | Year Ended December 31 |
|  | 2021 |  |  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  | (In Millions) |
Associates |  | $ | 398 |  |  | $ | 32 |  |  | $ | 173 |
7) Acquisition of intangible assets
|  | Year Ended December 31 |
|  | 2021 |  |  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  | (In Millions) |
Associates |  | $ | — |  |  | $ | 1 |  |  | $ | — |
8) Disposal of property, plant and equipment and investment properties
|  | Proceeds |
|  | Year Ended December 31 |
|  | 2021 |  |  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  | (In Millions) |
Associates |  | $ | 10 |  |  | $ | — |  |  | $ | — |
|  | Gain on Disposal |
|  | Year Ended December 31 |
|  | 2021 |  |  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  | (In Millions) |
Associates |  | $ | 2 |  |  | $ | — |  |  | $ | — |
Summary of Lease Liabilities | The lease liabilities of ST-2 Satellite Ventures Pte., Ltd. as of December 31, 2022 and 2023 were as follows:
|  | December 31 |
|  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |
|  | (In Millions) |
Lease liabilities - current |  | $ | 194 |  |  | $ | 197 |
Lease liabilities - noncurrent |  |  | 1,761 |  |  |  | 1,603 |
|  | $ | 1,955 |  |  | $ | 1,800 |
Schedule of Bank Deposits and Other Financial Assets Explanatory | The bank deposits and other financial assets of NCB as of December 31, 2022 and 2023 were as follows:
|  | December 31 |
|  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |
|  | (In Millions) |
Bank deposits and other financial assets |  | $ | — |  |  | $ | 1,132 |
Compensation of Directors and Other Key Management Personnel |
|  | Year Ended December 31 |
|  | 2021 |  |  | 2022 |  |  | 2023 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  |  |  |  | (In Millions) |  |  |  |
Short-term employee benefits |  | $ | 321 |  |  | $ | 360 |  |  | $ | 352 |
Post-employment benefits |  |  | 7 |  |  |  | 8 |  |  |  | 26 |
Share-based payment |  |  | 2 |  |  |  | 2 |  |  |  | 1 |
Termination benefits |  |  | — |  |  |  | — |  |  |  | — |
|  | $ | 330 |  |  | $ | 370 |  |  | $ | 379 |

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