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Subsidiaries (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure of subsidiaries [Line Items] |
Detail Information of Subsidiaries | The detail information of the subsidiaries at the end of reporting period was as follows:
|  |  |  |  |  | Percentage of Ownership |  |  |
|  |  |  |  |  | December 31 |  |  |
Name of Investor |  | Name of Investee |  | Main Businesses and Products |  | 2017 |  |  | 2018 |  |  | Note
Chunghwa Telecom Co., Ltd. |  | Senao International Co., Ltd. (“SENAO”) |  | Handset and peripherals retailer; sales of CHT mobile phone plans as an agent |  |  | 29 |  |  |  | 28 |  |  | a)
|  | Light Era Development Co., Ltd. (“LED”) |  | Planning and development of real estate and intelligent buildings, and property management |  |  | 100 |  |  |  | 100 |  |  |
|  | Donghwa Telecom Co., Ltd. (“DHT”) |  | International private leased circuit, IP VPN service, and IP transit services |  |  | 100 |  |  |  | 100 |  |  |
|  | Chunghwa Telecom Singapore Pte., Ltd. (“CHTS”) |  | International private leased circuit, IP VPN service, and IP transit services |  |  | 100 |  |  |  | 100 |  |  |
|  | Chunghwa System Integration Co., Ltd. (“CHSI”) |  | Providing system integration services and telecommunications equipment |  |  | 100 |  |  |  | 100 |  |  |
|  | Chunghwa Investment Co., Ltd. (“CHI”) |  | Investment |  |  | 89 |  |  |  | 89 |  |  |
|  | CHIEF Telecom Inc. (“CHIEF”) |  | Network integration, internet data center (“IDC”), communications integration and cloud application services |  |  | 67 |  |  |  | 57 |  |  | b)
|  | CHYP Multimedia Marketing & Communications Co., Ltd. (“CHYP”) |  | Digital information supply services and advertisement services |  |  | 100 |  |  |  | 100 |  |  |
|  | Prime Asia Investments Group Ltd. (B.V.I.) (“Prime Asia”) |  | Investment |  |  | 100 |  |  |  | 100 |  |  |
|  | Spring House Entertainment Tech. Inc. (“SHE”) |  | Software design services, internet contents production and play, and motion picture production and distribution |  |  | 56 |  |  |  | 56 |  |  |
|  | Chunghwa Telecom Global, Inc. (“CHTG”) |  | International private leased circuit, internet services, and transit services |  |  | 100 |  |  |  | 100 |  |  |
|  | Chunghwa Telecom Vietnam Co., Ltd. (“CHTV”) |  | Intelligent energy saving solutions, international circuit, and information and communication technology (“ICT”) services. |  |  | 100 |  |  |  | 100 |  |  |
|  | Smartfun Digital Co., Ltd. (“SFD”) |  | Providing diversified family education digital services |  |  | 65 |  |  |  | 65 |  |  |
|  | Chunghwa Telecom Japan Co., Ltd. (“CHTJ”) |  | International private leased circuit, IP VPN service, and IP transit services |  |  | 100 |  |  |  | 100 |  |  |
|  | Chunghwa Sochamp Technology Inc. (“CHST”) |  | Design, development and production of Automatic License Plate Recognition software and hardware |  |  | 51 |  |  |  | 51 |  |  |
|  | Honghwa International Co., Ltd. (“HHI”) |  | Telecommunications engineering, sales agent of mobile phone plan application and other business services |  |  | 100 |  |  |  | 100 |  |  |
|  | Chunghwa Leading Photonics Tech Co., Ltd. (“CLPT”) |  | Production and sale of electronic components and finished products |  |  | 75 |  |  |  | 75 |  |  |
|  | Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”) |  | International private leased circuit, IP VPN service, ICT and cloud VAS services |  |  | 100 |  |  |  | 100 |  |  | c)
(Continued)
|  |  |  |  |  | Percentage of Ownership |  |  |
|  |  |  |  |  | December 31 |  |  |
Name of Investor |  | Name of Investee |  | Main Businesses and Products |  | 2017 |  |  | 2018 |  |  | Note
|  | CHT Security Co., Ltd. (“CHTSC”) |  | Computing equipment installation, wholesale of computing and business machinery equipment and software, management consulting services, data processing services, digital information supply services and internet identify services |  |  | 80 |  |  |  | 80 |  |  | d)
|  | New Prospect Investments Holdings Ltd. (B.V.I.) (“New Prospect”) |  | Investment |  |  | — |  |  |  | — |  |  | e)
Senao International Co., Ltd. |  | Senao International (Samoa) Holding Ltd. (“SIS”) |  | International investment |  |  | 100 |  |  |  | 100 |  |  |
|  | Youth Co., Ltd. (“Youth”) |  | Sale of information and communication technologies products |  |  | 89 |  |  |  | 93 |  |  | f)
|  | Aval Technologies Co., Ltd. (“Aval”) |  | Sale of information and communication technologies products |  |  | 100 |  |  |  | 100 |  |  |
|  | SENYOUNG Insurance Agent Co., Ltd. (“SENYOUNG”) |  | Property and liability insurance agency |  |  | 100 |  |  |  | 100 |  |  | g)
Youth Co., Ltd. |  | ISPOT Co., Ltd. (“ISPOT”) |  | Sale of information and communication technologies products |  |  | 100 |  |  |  | 100 |  |  |
|  | Youyi Co., Ltd. (“Youyi”) |  | Maintenance of information and communication technologies products |  |  | 100 |  |  |  | 100 |  |  |
Light Era Development Co., Ltd. |  | Taoyuan Asia Silicon Valley Innovation Co., Ltd. (“TASVI”) |  | Development of real estate |  |  | — |  |  |  | 60 |  |  | h)
CHIEF Telecom Inc. |  | Unigate Telecom Inc. (“Unigate”) |  | Telecommunications and internet service |  |  | 100 |  |  |  | 100 |  |  |
|  | Chief International Corp. (“CIC”) |  | Telecommunications and internet service |  |  | 100 |  |  |  | 100 |  |  |
|  | Shanghai Chief Telecom Co., Ltd. (“SCT”) |  | Telecommunications and internet service |  |  | 49 |  |  |  | 49 |  |  |
Chunghwa System Integration Co., Ltd. |  | Concord Technology Co., Ltd. (“Concord”) |  | Investment |  |  | 100 |  |  | - |  |  | i)
Chunghwa Investment Co., Ltd. |  | Chunghwa Precision Test Tech. Co., Ltd. (“CHPT”) |  | Production and sale of semiconductor testing components and printed circuit board |  |  | 38 |  |  |  | 34 |  |  | j)
Concord Technology Co., Ltd. |  | Glory Network System Service (Shanghai) Co., Ltd. (“GNSS (Shanghai)”) |  | Design, development and production of computer and internet software, installment, maintenance and consulting services of information system integration, and sales of self-production products |  |  | — |  |  |  | — |  |  | k)
Chunghwa Precision Test Tech. Co., Ltd. |  | Chunghwa Precision Test Tech. USA Corporation (“CHPT (US)”) |  | Design and after-sale services of semiconductor testing components and printed circuit board |  |  | 100 |  |  |  | 100 |  |  |
|  | CHPT Japan Co., Ltd. (“CHPT (JP)”) |  | Related services of electronic parts, machinery processed products and printed circuit board |  |  | 100 |  |  |  | 100 |  |  |
|  | Chunghwa Precision Test Tech. International, Ltd. (“CHPT (International)”) |  | Wholesale and retail of electronic materials, and investment |  |  | 100 |  |  |  | 100 |  |  |
Senao International (Samoa) Holding Ltd. |  | Senao International HK Limited (“SIHK”) |  | International investment |  |  | 100 |  |  |  | 100 |  |  |
(Continued)
|  |  |  |  |  | Percentage of Ownership |  |  |
|  |  |  |  |  | December 31 |  |  |
Name of Investor |  | Name of Investee |  | Main Businesses and Products |  | 2017 |  |  | 2018 |  |  | Note
Senao International HK Limited |  | Senao Trading (Fujian) Co., Ltd. (“STF”) |  | Sale of information and communication technologies products |  |  | 100 |  |  |  | 100 |  |  | l)
|  | Senao International Trading (Shanghai) Co., Ltd. (“SITS”) |  | Sale of information and communication technologies products |  |  | 100 |  |  |  | 100 |  |  |
|  | Senao International Trading (Shanghai) Co., Ltd. (“SEITS”) |  | Maintenance of information and communication technologies products |  |  | 100 |  |  |  | — |  |  | m)
|  | Senao International Trading (Jiangsu) Co., Ltd. (“SITJ”) |  | Sale of information and communication technologies products |  |  | 100 |  |  |  | 100 |  |  | n)
Prime Asia Investments Group Ltd. (B.V.I.) |  | Chunghwa Hsingta Co., Ltd. (“CHC”) |  | Investment |  |  | 100 |  |  |  | 100 |  |  |
Chunghwa Hsingta Co., Ltd. (“CHC”) |  | Chunghwa Telecom (China) Co., Ltd. (“CTC”) |  | Integrated information and communication solution services for enterprise clients, and intelligent energy network service |  |  | 100 |  |  |  | 100 |  |  |
|  | Jiangsu Zhenhua Information Technology Company, LLC. (“JZIT”) |  | Providing intelligent energy saving solution and intelligent buildings services |  |  | 75 |  |  |  | — |  |  | o)
Chunghwa Precision Test Tech. International, Ltd. |  | Shanghai Taihua Electronic Technology Limited (“STET”) |  | Design of printed circuit board and related consultation service |  |  | 100 |  |  |  | 100 |  |  |
(Concluded)
| a) | SENAO transferred its treasury stock to employees in June 2018 and the Company’s ownership interest in SENAO decreased to 28.18% as of December 31, 2018. As Chunghwa controls five out of nine seats of the Board of Directors of SENAO through the support of large beneficial stockholders, the accounts of SENAO are included in the consolidated financial statements.
| b) | Chunghwa and CHI disposed some shares of CHIEF in June 2017 before CHIEF traded its shares on the emerging stock market according to the local requirements. The Company’s equity ownership of CHIEF decreased to 70.43% as of December 31, 2017. CHIEF issued new shares in March and November 2018 as its employees exercised their options. In addition, Chunghwa and CHI disposed some shares of CHIEF in May 2018 before CHIEF traded its shares on the General Stock Market of the Taipei Exchange according to the local requirements. Furthermore, Chunghwa and CHI did not participate in the capital increase of CHIEF in June 2018. Therefore, the Company’s equity ownership interest in CHIEF decreased to 60.23% as of December 31, 2018.
| c) | Chunghwa invested 100% equity shares of Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”) in March 2017.
| d) | Chunghwa invested 80.27% equity shares of CHT Security Co., Ltd. (“CHTSC”) in December 2017.
| e) | New Prospect was approved to dissolve its business in April 2017. The liquidation of New Prospect was completed in May 2017.
| f) | SENAO subscribed for all the shares in the capital increase of Youth in December 2018. Therefore, the Company’s equity ownership interest in Youth increased from 89% to 93%.
| g) | SENAO invested 100% equity shares of SENYOUNG Insurance Agent Co., Ltd. (“SENYOUNG”) in November 2017.
| h) | LED invested 60% equity shares of Taoyuan Asia Silicon Valley Innovation Co., Ltd. (“TASVI”) in March 2018. TASVI was approved to end and dissolve its business in April 2019. The liquidation of TASVI is still in process.
| i) | Concord was approved to end and dissolve its business in August 2017. The liquidation of Concord was completed in January 2018.
| j) | CHI did not participate in the capital increase of CHPT in September 2017, and disposed some shares of CHPT from April to August 2018. Therefore, its ownership interest in CHPT decreased to 34.25% as of December 31, 2018. However, considering absolute and relative size of ownership interest, and the dispersion of shares owned by the other stockholders, the management concluded that the Company has a sufficiently dominant voting interest to direct the relevant activities; hence, CHPT is deemed as a subsidiary of the Company.
| k) | GNSS (Shanghai) completed its liquidation in August 2017 and Concord received the proceeds from the liquidation.
| l) | STF was approved to end and dissolve its business in September 2018. The liquidation of STF is still in process.
| m) | SEITS completed its liquidation in March 2018.
| n) | SITJ was approved to end and dissolve its business in April 2018. The liquidation of SITJ was completed in March 2019.
| o) | JZIT completed its liquidation in December 2018 and CHC received the proceeds from the liquidation.
Detailed Information of Equity Transactions | The detailed information of the equity transactions for the years ended December 31, 2016, 2017 and 2018 was as follows:
|  | Year Ended December 31 |
|  | 2016 |  |  | 2017 |
|  | CHI Disposed Some Shares of CHPT |  |  | CHI Did Not Participate in the Capital Increase of CHPT |  |  | CHI Did Not Participate in the Capital Increase of CHPT |  |  | SENAO Transferred its Treasury Stock |  |  | Chunghwa and CHI Disposed Some Shares of CHIEF |
|  | NT$ |  |  | NT$ |  |  | NT$ |  |  | NT$ |  |  |  |  |
|  | (In Millions) |
Cash consideration received from (paid to) Noncontrolling interests |  | $ | 83 |  |  | $ | 1,175 |  |  | $ | 2,552 |  |  | $ | 164 |  |  | $ | 106 |
The proportionate share of the carrying amount of the net assets of the subsidiary transferred (to) from noncontrolling interests |  |  | (25 | ) |  |  | (786 | ) |  |  | (1,750 | ) |  |  | (137 | ) |  |  | (29 | )
Differences arising from equity transactions |  | $ | 58 |  |  | $ | 389 |  |  | $ | 802 |  |  | $ | 27 |  |  | $ | 77 |
Line items for equity transaction adjustments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional paid-in capital - difference between consideration received or paid and the carrying amount of the subsidiaries’ net assets upon actual disposal or acquisition |  | $ | 58 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 77 |
Additional paid-in capital - arising from changes in equities of subsidiaries |  | $ | — |  |  | $ | 389 |  |  | $ | 802 |  |  | $ | 27 |  |  | $ | — |
Unappropriated earnings |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
|  | Year Ended December 31 |
|  | 2018 |
|  | SENAO not Proportionately participating in the Capital Increase of Youth |  |  | SENAO Transferred its Treasury Stock |  |  | CHI Disposed Some Shares of CHPT |  |  | Chunghwa and CHI Did Not Participate in the Capital Increase of CHIEF |  |  | Chunghwa and CHI Disposed Some Shares of CHIEF |  |  | Share-Based Payment of CHIEF |
|  | NT$ |  |  | NT$ |  |  | NT$ |  |  | NT$ |  |  |  |  |  |  | NT$ |
|  | (In Millions) |
Cash consideration received from noncontrolling interests |  | $ | — |  |  | $ | 327 |  |  | $ | 1,042 |  |  | $ | 1,477 |  |  | $ | 133 |  |  | $ | 35 |
The proportionate share of the carrying amount of the net assets of the subsidiary transferred to noncontrolling interests |  |  | — |  |  |  | (272 | ) |  |  | (330 | ) |  |  | (700 | ) |  |  | (19 | ) |  |  | (24 | )
Differences arising from equity transactions |  | $ | — |  |  | $ | 55 |  |  | $ | 712 |  |  | $ | 777 |  |  | $ | 114 |  |  | $ | 11 |
Line items for equity transaction adjustments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional paid-in capital - difference between consideration received or paid and the carrying amount of the subsidiaries’ net assets upon actual disposal or acquisition |  | $ | — |  |  | $ | — |  |  | $ | 712 |  |  | $ | — |  |  | $ | 114 |  |  | $ | — |
Additional paid-in capital - arising from changes in equities of subsidiaries |  | $ | — |  |  | $ | 55 |  |  | $ | — |  |  | $ | 777 |  |  | $ | — |  |  | $ | 11 |
Less than wholly owned subsidiaries that have material noncontrolling interests [Member] |
Disclosure of subsidiaries [Line Items] |
Detail Information of Subsidiaries | The table below shows details of less than wholly owned subsidiaries of the Company that have material noncontrolling interests:
|  | Place of Incorporation |  | Proportion of Ownership Interests and Voting Rights Held by Noncontrolling Interests |
|  | and Principal |  | December 31 |
Subsidiaries |  | Place of Business |  | 2017 |  |  | 2018 |
SENAO |  | Taiwan |  | 71% |  |  | 72% |
CHPT |  | Taiwan |  | 62% |  |  | 66% |
|  | Profit Allocated to Noncontrolling Interests |  |  | Accumulated Noncontrolling Interests |
|  | Year Ended December 31 |  |  | December 31 |
|  | 2016 |  |  | 2017 |  |  | 2018 |  |  | 2017 |  |  | 2018 |
|  | NT$ |  |  | NT$ |  |  | NT$ |  |  | NT$ |  |  | NT$ |
|  |  |  |  |  | (In Millions) |  |  |  |  |  |  |  |  |
SENAO |  | $ | 690 |  |  | $ | 592 |  |  | $ | 326 |  |  | $ | 4,092 |  |  | $ | 4,108 |
CHPT |  | $ | 341 |  |  | $ | 431 |  |  | $ | 477 |  |  |  | 3,513 |  |  |  | 4,022 |
Individually immaterial subsidiaries with noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 869 |  |  |  | 1,727 |
|  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 8,474 |  |  | $ | 9,857 |
Summarized Financial Information Before Intercompany Eliminations | The summarized financial information below represents amounts before intercompany eliminations.
|  | December 31 |
|  | 2017 |  |  | 2018 |
|  | NT$ |  |  | NT$ |
|  | (In Millions) |
Current assets |  | $ | 7,584 |  |  | $ | 7,041 |
Noncurrent assets |  | $ | 2,531 |  |  | $ | 2,527 |
Current liabilities |  | $ | 4,278 |  |  | $ | 3,757 |
Noncurrent liabilities |  | $ | 160 |  |  | $ | 164 |
Equity attributable to the parent |  | $ | 1,585 |  |  | $ | 1,539 |
Equity attributable to noncontrolling interests |  | $ | 4,092 |  |  | $ | 4,108 |
|  | Year Ended December 31 |
|  | 2016 |  |  | 2017 |  |  | 2018 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  |  |  |  |  | (In Millions) |  |  |  |  |
Revenue and income |  | $ | 34,453 |  |  | $ | 36,038 |  |  | $ | 31,540 |
Costs and expenses |  |  | 33,476 |  |  |  | 35,200 |  |  |  | 31,081 |
Profit for the year |  | $ | 977 |  |  | $ | 838 |  |  | $ | 459 |
Profit attributable to the parent |  | $ | 287 |  |  | $ | 246 |  |  | $ | 133 |
Profit attributable to noncontrolling interests |  |  | 690 |  |  |  | 592 |  |  |  | 326 |
Profit for the year |  | $ | 977 |  |  | $ | 838 |  |  | $ | 459 |
Other comprehensive income (loss) attributable to the parent |  | $ | (21 | ) |  | $ | 3 |  |  | $ | (2 | )
Other comprehensive loss attributable to noncontrolling interests |  |  | (53 | ) |  |  | (17 | ) |  |  | (10 | )
Other comprehensive loss for the year |  | $ | (74 | ) |  | $ | (14 | ) |  | $ | (12 | )
Total comprehensive income attributable to the parent |  | $ | 266 |  |  | $ | 249 |  |  | $ | 131 |
Total comprehensive income attributable to noncontrolling interests |  |  | 637 |  |  |  | 575 |  |  |  | 316 |
Total comprehensive income for the year |  | $ | 903 |  |  | $ | 824 |  |  | $ | 447 |
Dividends paid to noncontrolling interests |  | $ | 526 |  |  | $ | 703 |  |  | $ | 587 |
Net cash flow from operating activities |  | $ | 531 |  |  | $ | 1,081 |  |  | $ | 696 |
Net cash flow from investing activities |  |  | 130 |  |  |  | (57 | ) |  |  | (13 | )
Net cash flow from financing activities |  |  | (677 | ) |  |  | (897 | ) |  |  | (491 | )
Effect of exchange rate changes on cash and cash equivalents |  |  | (7 | ) |  |  | (2 | ) |  |  | 1 |
Net cash inflow (outflow) |  | $ | (23 | ) |  | $ | 125 |  |  | $ | 193 |
The summarized financial information below represents amounts before intercompany eliminations.
|  | December 31 |
|  | 2017 |  |  | 2018 |
|  | NT$ |  |  | NT$ |
|  | (In Millions) |
Current assets |  | $ | 4,496 |  |  | $ | 4,417 |
Noncurrent assets |  | $ | 2,167 |  |  | $ | 2,779 |
Current liabilities |  | $ | 965 |  |  | $ | 1,076 |
Noncurrent liabilities |  | $ | 1 |  |  | $ | 1 |
Equity attributable to CHI |  | $ | 2,184 |  |  | $ | 2,097 |
Equity attributable to noncontrolling interests |  | $ | 3,513 |  |  | $ | 4,022 |
|  | Year Ended December 31 |
|  | 2016 |  |  | 2017 |  |  | 2018 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  |  |  |  |  | (In Millions) |  |  |  |  |
Revenue and income |  | $ | 2,607 |  |  | $ | 3,127 |  |  | $ | 3,299 |
Costs and expenses |  |  | 2,020 |  |  |  | 2,402 |  |  |  | 2,549 |
Profit for the year |  | $ | 587 |  |  | $ | 725 |  |  | $ | 750 |
Profit attributable to CHI |  | $ | 246 |  |  | $ | 294 |  |  | $ | 273 |
Profit attributable to noncontrolling interests |  |  | 341 |  |  |  | 431 |  |  |  | 477 |
Profit for the year |  | $ | 587 |  |  | $ | 725 |  |  | $ | 750 |
Other comprehensive loss attributable to CHI |  | $ | — |  |  | $ | (1 | ) |  | $ | — |
Other comprehensive loss attributable to noncontrolling interests |  |  | — |  |  |  | (2 | ) |  |  | — |
Other comprehensive loss for the year |  | $ | — |  |  | $ | (3 | ) |  | $ | — |
Total comprehensive income attributable to CHI |  | $ | 246 |  |  | $ | 293 |  |  | $ | 273 |
Total comprehensive income attributable to noncontrolling interests |  |  | 341 |  |  |  | 429 |  |  |  | 477 |
Total comprehensive income for the year |  | $ | 587 |  |  | $ | 722 |  |  | $ | 750 |
Dividends paid to noncontrolling interests |  | $ | 109 |  |  | $ | 146 |  |  | $ | 210 |
Net cash flow from operating activities |  | $ | 671 |  |  | $ | 1,052 |  |  | $ | 862 |
Net cash flow from investing activities |  |  | (904 | ) |  |  | (639 | ) |  |  | (733 | )
Net cash flow from financing activities |  |  | 841 |  |  |  | 2,306 |  |  |  | (328 | )
Effect of exchange rate changes on cash and cash equivalents |  |  | (2 | ) |  |  | (4 | ) |  |  | 1 |
Net cash inflow (outflow) |  | $ | 606 |  |  | $ | 2,715 |  |  | $ | (198 | )

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