Document and Entity Information
Document and Entity Information | 12 Months Ended |
Dec. 31, 2017shares | |
Documentand Entity Information [Abstract] | |
Document Type | 20-F |
Amendment Flag | false |
Document Period End Date | Dec. 31, 2017 |
Document Fiscal Year Focus | 2,017 |
Document Fiscal Period Focus | FY |
Trading Symbol | CHT |
Entity Registrant Name | Chunghwa Telecom Co Ltd. |
Entity Central Index Key | 1,132,924 |
Current Fiscal Year End Date | --12-31 |
Entity Well-known Seasoned Issuer | Yes |
Entity Current Reporting Status | Yes |
Entity Filer Category | Large Accelerated Filer |
Entity Common Stock, Shares Outstanding | 7,757,446,545 |
Consolidated Balance Sheet
Consolidated Balance Sheet $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
CURRENT ASSETS | |||
Cash and cash equivalents | $ 28,825 | $ 973 | $ 31,100 |
Financial assets at fair value through profit or loss | 0 | 0 | 0 |
Held-to-maturity financial assets | 0 | 0 | 2,140 |
Trade notes and accounts receivable, net | 31,941 | 1,077 | 31,022 |
Receivables from related parties | 49 | 2 | 14 |
Inventories | 8,840 | 298 | 7,423 |
Prepayments | 2,188 | 74 | 2,978 |
Other current monetary assets | 5,308 | 179 | 4,821 |
Other current assets | 2,183 | 74 | 2,122 |
Total current assets | 79,334 | 2,677 | 81,620 |
NONCURRENT ASSETS | |||
Available-for-sale financial assets | 5,751 | 194 | 4,764 |
Investments accounted for using equity method | 2,326 | 78 | 2,386 |
Property, plant and equipment | 288,708 | 9,740 | 291,170 |
Investment properties | 8,048 | 272 | 8,115 |
Intangible assets | 54,883 | 1,852 | 47,353 |
Deferred income tax assets | 2,730 | 92 | 2,322 |
Net defined benefit assets | 13 | 0 | 919 |
Prepayments | 3,573 | 121 | 3,241 |
Other noncurrent assets | 5,536 | 187 | 5,025 |
Total noncurrent assets | 371,568 | 12,536 | 365,295 |
TOTAL | 450,902 | 15,213 | 446,915 |
CURRENT LIABILITIES | |||
Short-term loans | 70 | 2 | 138 |
Financial liabilities at fair value through profit or loss | 1 | 0 | 1 |
Hedging derivative financial liabilities | 1 | 0 | 1 |
Trade notes and accounts payable | 19,396 | 654 | 18,810 |
Payables to related parties | 684 | 23 | 762 |
Current tax liabilities | 8,674 | 293 | 6,522 |
Other payables | 25,001 | 844 | 26,418 |
Provisions | 189 | 6 | 119 |
Advance receipts | 8,842 | 298 | 10,059 |
Other current liabilities | 1,081 | 37 | 1,330 |
Total current liabilities | 63,939 | 2,157 | 64,160 |
NONCURRENT LIABILITIES | |||
Long-term loans | 1,600 | 54 | 1,600 |
Deferred income tax liabilities | 1,430 | 48 | 1,464 |
Provisions | 78 | 3 | 66 |
Customers’ deposits | 4,671 | 158 | 4,610 |
Net defined benefit liabilities | 2,704 | 91 | 1,537 |
Deferred revenue | 3,612 | 122 | 3,546 |
Other noncurrent liabilities | 3,458 | 117 | 3,004 |
Total noncurrent liabilities | 17,553 | 593 | 15,827 |
Total liabilities | 81,492 | 2,750 | 79,987 |
EQUITY ATTRIBUTABLE TO STOCKHOLDERS OF THE PARENT | |||
Common stocks | 77,574 | 2,617 | 77,574 |
Additional paid-in capital | 148,091 | 4,996 | 147,180 |
Retained earnings | |||
Legal reserve | 77,574 | 2,617 | 77,574 |
Special reserve | 2,681 | 91 | 2,676 |
Unappropriated earnings | 54,633 | 1,843 | 55,657 |
Total retained earnings | 134,888 | 4,551 | 135,907 |
Other adjustments | 383 | 13 | (5) |
Total equity attributable to stockholders of the parent | 360,936 | 12,177 | 360,656 |
NONCONTROLLING INTERESTS | 8,474 | 286 | 6,272 |
Total equity | 369,410 | 12,463 | 366,928 |
TOTAL | $ 450,902 | $ 15,213 | $ 446,915 |
Consolidated Statements of Comp
Consolidated Statements of Comprehensive Income $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($)$ / shares | Dec. 31, 2017USD ($)$ / shares | Dec. 31, 2016TWD ($)$ / shares | Dec. 31, 2015TWD ($)$ / shares | |
Statement [LineItems] | ||||
REVENUES | $ 227,514 | $ 7,676 | $ 229,991 | $ 231,795 |
OPERATING COSTS | 146,837 | 4,954 | 147,552 | 148,126 |
GROSS PROFIT | 80,677 | 2,722 | 82,439 | 83,669 |
OPERATING EXPENSES | ||||
Marketing | 25,357 | 856 | 25,516 | 25,071 |
General and administrative | 4,626 | 156 | 4,537 | 4,515 |
Research and development | 3,886 | 131 | 3,785 | 3,617 |
Total operating expenses | 33,869 | 1,143 | 33,838 | 33,203 |
OTHER INCOME AND EXPENSES | (105) | (3) | (496) | (105) |
INCOME FROM OPERATIONS | 46,703 | 1,576 | 48,105 | 50,361 |
NON-OPERATING INCOME AND EXPENSES | ||||
Interest income | 205 | 7 | 189 | 306 |
Other income | 836 | 28 | 1,072 | 650 |
Other gains and losses | (132) | (4) | (448) | (228) |
Interest expenses | (22) | (1) | (20) | (33) |
Share of the profits of associates and joint ventures accounted for using equity method | 419 | 14 | 515 | 897 |
Total non-operating income and expenses | 1,306 | 44 | 1,308 | 1,592 |
INCOME BEFORE INCOME TAX | 48,009 | 1,620 | 49,413 | 51,953 |
INCOME TAX EXPENSE | 7,849 | 265 | 7,787 | 9,101 |
NET INCOME | 40,160 | 1,355 | 41,626 | 42,852 |
Items that will not be reclassified to profit or loss: | ||||
Remeasurements of defined benefit pension plans | (2,024) | (68) | (2,043) | (231) |
Share of remeasurements of defined benefit pension plans of associates and joint ventures | 1 | 0 | (44) | (25) |
Income tax benefit relating to items that will not be reclassified to profit or loss | 344 | 11 | 347 | 39 |
Items that will not be reclassified to profit or loss | (1,679) | (57) | (1,740) | (217) |
Items that may be reclassified subsequently to profit or loss: | ||||
Exchange differences arising from the translation of the foreign operations | (229) | (8) | (170) | 24 |
Unrealized gain (loss) on available-for- sale financial assets | 605 | 21 | (144) | (645) |
Cash flow hedges | (1) | 0 | (1) | 1 |
Share of exchange differences arising from the translation of the foreign operations of associates and joint ventures | (5) | 0 | (3) | 6 |
Income tax benefit (expense) relating to items that may be reclassified subsequently | 3 | 0 | 2 | (2) |
Items that may be reclassified subsequently to profit or loss | 373 | 13 | (316) | (616) |
Total other comprehensive income (loss), net of income tax | (1,306) | (44) | (2,056) | (833) |
TOTAL COMPREHENSIVE INCOME | 38,854 | 1,311 | 39,570 | 42,019 |
NET INCOME ATTRIBUTABLE TO | ||||
Stockholders of the parent | 38,988 | 1,315 | 40,485 | 42,039 |
Noncontrolling interests | 1,172 | 40 | 1,141 | 813 |
NET INCOME | 40,160 | 1,355 | 41,626 | 42,852 |
COMPREHENSIVE INCOME ATTRIBUTABLE TO | ||||
Stockholders of the parent | 37,705 | 1,272 | 38,486 | 41,207 |
Noncontrolling interests | 1,149 | 39 | 1,084 | 812 |
TOTAL COMPREHENSIVE INCOME | $ 38,854 | $ 1,311 | $ 39,570 | $ 42,019 |
EARNINGS PER SHARE | ||||
Basic | (per share) | $ 5.03 | $ 0.17 | $ 5.22 | $ 5.42 |
Diluted | (per share) | 5.02 | 0.17 | 5.21 | 5.41 |
American Depositary Shares [Member] | ||||
EARNINGS PER SHARE | ||||
Basic | (per share) | 50.26 | 1.70 | 52.19 | 54.19 |
Diluted | (per share) | $ 50.19 | $ 1.69 | $ 52.11 | $ 54.06 |
Consolidated Statements of Chan
Consolidated Statements of Changes in Equity $ in Millions, $ in Millions | TWD ($) | USD ($) | Common stocks [Member]TWD ($) | Common stocks [Member]USD ($) | Additional paid-in capital [Member]TWD ($) | Additional paid-in capital [Member]USD ($) | Legal reserve [Member]TWD ($) | Legal reserve [Member]USD ($) | Special reserve [Member]TWD ($) | Special reserve [Member]USD ($) | Unappropriated earnings [Member]TWD ($) | Unappropriated earnings [Member]USD ($) | Total retained earnings [Member]TWD ($) | Total retained earnings [Member]USD ($) | Exchange differences arising from the translation of the foreign operations [Member]TWD ($) | Exchange differences arising from the translation of the foreign operations [Member]USD ($) | Unrealized gain (loss) on available-for-sale financial assets [Member]TWD ($) | Unrealized gain (loss) on available-for-sale financial assets [Member]USD ($) | Cash flow hedges [Member]TWD ($) | Cash flow hedges [Member]USD ($) | Total other adjustments [Member]TWD ($) | Total other adjustments [Member]USD ($) | Total equity attributable to stockholders of the parent [Member]TWD ($) | Total equity attributable to stockholders of the parent [Member]USD ($) | Noncontrolling interests [Member]TWD ($) | Noncontrolling interests [Member]USD ($) |
Beginning balance at Dec. 31, 2014 | $ 365,712 | $ 77,574 | $ 146,720 | $ 76,893 | $ 2,820 | $ 55,895 | $ 135,608 | $ 146 | $ 740 | $ 0 | $ 886 | $ 360,788 | $ 4,924 | |||||||||||||
Legal reserve | 0 | 0 | 0 | 681 | 0 | (681) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||
Special reserve | 0 | 0 | 0 | 0 | (144) | 144 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||
Cash dividends paid by Chunghwa | (37,673) | 0 | 0 | 0 | 0 | (37,673) | (37,673) | 0 | 0 | 0 | 0 | (37,673) | 0 | |||||||||||||
Cash dividends distributed by subsidiaries | (350) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | (350) | |||||||||||||
Reversal of special reserve recognized from land disposal | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||
Partial disposal of interests in subsidiaries | 45 | 0 | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 27 | 18 | |||||||||||||
Change in additional paid-in capital for not participating in the capital increase of a subsidiary | 0 | |||||||||||||||||||||||||
Other changes in additional paid-in capital in subsidiaries | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | |||||||||||||
Change in additional paid-in capital from share subscription not based on original ownership of a subsidiary | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||
Net income | 42,852 | 0 | 0 | 0 | 0 | 42,039 | 42,039 | 0 | 0 | 0 | 0 | 42,039 | 813 | |||||||||||||
Total other comprehensive income (loss), net of income tax | (833) | 0 | 0 | 0 | 0 | (215) | (215) | 31 | (649) | 1 | (617) | (832) | (1) | |||||||||||||
TOTAL COMPREHENSIVE INCOME | 42,019 | 0 | 0 | 0 | 0 | 41,824 | 41,824 | 31 | (649) | 1 | (617) | 41,207 | 812 | |||||||||||||
Share-based payment transactions of subsidiaries | 36 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 36 | |||||||||||||
Subsidiary purchased its treasury stock | (492) | 0 | (15) | 0 | 0 | (61) | (61) | 0 | 0 | 0 | 0 | (76) | (416) | |||||||||||||
Net increase in noncontrolling interests | 39 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 39 | |||||||||||||
Ending balance at Dec. 31, 2015 | 369,339 | 77,574 | 146,733 | 77,574 | 2,676 | 59,448 | 139,698 | 177 | 91 | 1 | 269 | 364,274 | 5,065 | |||||||||||||
Special reserve | 5 | |||||||||||||||||||||||||
Cash dividends paid by Chunghwa | (42,551) | 0 | 0 | 0 | 0 | (42,551) | (42,551) | 0 | 0 | 0 | 0 | (42,551) | 0 | |||||||||||||
Cash dividends distributed by subsidiaries | (710) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | (710) | |||||||||||||
Partial disposal of interests in subsidiaries | 83 | 0 | 58 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 58 | 25 | |||||||||||||
Change in additional paid-in capital for not participating in the capital increase of a subsidiary | 1,175 | 0 | 389 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 389 | 786 | |||||||||||||
Other changes in additional paid-in capital in subsidiaries | 0 | |||||||||||||||||||||||||
Net income | 41,626 | 0 | 0 | 0 | 0 | 40,485 | 40,485 | 0 | 0 | 0 | 0 | 40,485 | 1,141 | |||||||||||||
Total other comprehensive income (loss), net of income tax | (2,056) | 0 | 0 | 0 | 0 | (1,725) | (1,725) | (131) | (142) | (1) | (274) | (1,999) | (57) | |||||||||||||
TOTAL COMPREHENSIVE INCOME | 39,570 | 0 | 0 | 0 | 0 | 38,760 | 38,760 | (131) | (142) | (1) | (274) | 38,486 | 1,084 | |||||||||||||
Share-based payment transactions of subsidiaries | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 17 | |||||||||||||
Subsidiary purchased its treasury stock | 0 | |||||||||||||||||||||||||
Net increase in noncontrolling interests | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | |||||||||||||
Ending balance at Dec. 31, 2016 | 366,928 | 77,574 | 147,180 | 77,574 | 2,676 | 55,657 | 135,907 | 46 | (51) | 0 | (5) | 360,656 | 6,272 | |||||||||||||
Special reserve | 0 | 0 | 0 | 0 | 5 | (5) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||
Cash dividends paid by Chunghwa | (38,336) | 0 | 0 | 0 | 0 | (38,336) | (38,336) | 0 | 0 | 0 | 0 | (38,336) | 0 | |||||||||||||
Cash dividends distributed by subsidiaries | (942) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | (942) | |||||||||||||
Unclaimed dividend | 3 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | |||||||||||||
Change in additional paid-in capital from investments in associates and joint ventures accounted for using equity method | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||
Partial disposal of interests in subsidiaries | 106 | 0 | 77 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 77 | 29 | |||||||||||||
Change in additional paid-in capital for not participating in the capital increase of a subsidiary | 2,552 | 0 | 802 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 802 | 1,750 | |||||||||||||
Other changes in additional paid-in capital in subsidiaries | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||||
Net income | 40,160 | $ 1,355 | 0 | 0 | 0 | 0 | 38,988 | 38,988 | 0 | 0 | 0 | 0 | 38,988 | 1,172 | ||||||||||||
Total other comprehensive income (loss), net of income tax | (1,306) | (44) | 0 | 0 | 0 | 0 | (1,671) | (1,671) | (220) | 609 | (1) | 388 | (1,283) | (23) | ||||||||||||
TOTAL COMPREHENSIVE INCOME | 38,854 | 1,311 | 0 | 0 | 0 | 0 | 37,317 | 37,317 | (220) | 609 | (1) | 388 | 37,705 | 1,149 | ||||||||||||
Share-based payment transactions of subsidiaries | 22 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 20 | |||||||||||||
Subsidiary purchased its treasury stock | 0 | |||||||||||||||||||||||||
Net increase in noncontrolling interests | 223 | 0 | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 27 | 196 | |||||||||||||
Ending balance at Dec. 31, 2017 | $ 369,410 | $ 12,463 | $ 77,574 | $ 2,617 | $ 148,091 | $ 4,996 | $ 77,574 | $ 2,617 | $ 2,681 | $ 91 | $ 54,633 | $ 1,843 | $ 134,888 | $ 4,551 | $ (174) | $ (6) | $ 558 | $ 19 | $ (1) | $ 0 | $ 383 | $ 13 | $ 360,936 | $ 12,177 | $ 8,474 | $ 286 |
Consolidated Statements of Cash
Consolidated Statements of Cash Flows $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
CASH FLOWS FROM OPERATING ACTIVITIES | ||||
Income before income tax | $ 48,009 | $ 1,620 | $ 49,413 | $ 51,953 |
Adjustments to reconcile income before income tax to net cash provided by operating activities: | ||||
Depreciation | 28,164 | 950 | 29,106 | 30,368 |
Amortization | 3,766 | 127 | 3,379 | 3,080 |
Provision for doubtful accounts | 643 | 22 | 941 | 519 |
Interest expenses | 22 | 1 | 20 | 33 |
Interest income | (205) | (7) | (189) | (306) |
Dividend income | (328) | (11) | (391) | (218) |
Compensation cost of share-based payment transactions | 22 | 1 | 17 | 36 |
Share of profits of associates and joint ventures accounted for using equity method | (419) | (14) | (515) | (897) |
Loss on disposal of property, plant and equipment | 107 | 4 | 48 | 109 |
Property, plant and equipment transferred to expenses | 3 | 0 | 0 | 0 |
Loss on disposal of intangible assets | 0 | 0 | 0 | 0 |
Gain on disposal of financial instruments | (3) | 0 | 0 | 0 |
Loss (gain) on disposal of investments accounted for using equity method | 0 | 0 | 2 | (4) |
Impairment loss on available-for-sale financial assets | 0 | 0 | 577 | 107 |
Impairment loss on investments accounted for using equity method | 0 | 0 | 0 | 8 |
Provision for inventory and obsolescence | 52 | 2 | 192 | 198 |
Impairment loss on property, plant and equipment | 0 | 0 | 596 | 138 |
Reversal of impairment loss on investment properties | (11) | 0 | (148) | (142) |
Impairment loss on intangible assets | 9 | 0 | 0 | 0 |
Valuation loss (gain) on financial assets and liabilities at fair value through profit or loss, net | (1) | 0 | 1 | 0 |
Loss (gain) on foreign exchange, net | 83 | 3 | (80) | 54 |
Changes in operating assets and liabilities: | ||||
Financial assets held for trading | 0 | 0 | 0 | 1 |
Trade notes and accounts receivable | (1,191) | (40) | (4,613) | (1,172) |
Receivables from related parties | (36) | (1) | 28 | 39 |
Inventories | (1,469) | (50) | 1,166 | (1,852) |
Prepayments | 458 | 15 | 62 | (327) |
Other current monetary assets | (81) | (3) | (242) | (357) |
Other current assets | (61) | (2) | 214 | 889 |
Trade notes and accounts payable | 587 | 20 | 2,497 | (2,223) |
Payables to related parties | (78) | (3) | 151 | 203 |
Other payables | (691) | (24) | (76) | 1,644 |
Provisions | 82 | 3 | (63) | (24) |
Advance receipts | (728) | (25) | 504 | 1,134 |
Other current liabilities | (76) | (3) | 7 | (112) |
Deferred revenue | 66 | 2 | (70) | 218 |
Net defined benefit plans | 49 | 2 | (8,539) | 439 |
Cash generated from operations | 76,744 | 2,589 | 73,995 | 83,536 |
Interest paid | (22) | (1) | (20) | (33) |
Income tax paid | (5,790) | (195) | (9,023) | (7,178) |
Net cash provided by operating activities | 70,932 | 2,393 | 64,952 | 76,325 |
CASH FLOWS FROM INVESTING ACTIVITIES | ||||
Acquisition of available-for-sale financial assets | (400) | (13) | (53) | (29) |
Proceeds from disposal of available-for-sale financial assets | 9 | 0 | 39 | 2 |
Proceeds from capital reduction of available-for-sale financial assets | 12 | 0 | 37 | 44 |
Acquisition of time deposits and negotiable certificate of deposit with maturities of more than three months | (6,231) | (210) | (4,119) | (11,494) |
Proceeds from disposal of time deposits and negotiable certificate of deposit with maturities of more than three months | 5,650 | 191 | 2,834 | 11,824 |
Acquisition of held-to-maturity financial assets | 0 | 0 | 0 | (1,002) |
Proceeds from disposal of held-to-maturity financial assets | 2,140 | 72 | 1,875 | 4,450 |
Acquisition of investments accounted for using equity method | 0 | 0 | (30) | (6) |
Proceeds from disposal of investments accounted for using equity method | 0 | 0 | 182 | 16 |
Net cash outflow on acquisition of subsidiaries | 0 | 0 | 0 | (114) |
Acquisition of property, plant and equipment | (26,875) | (907) | (23,517) | (25,084) |
Proceeds from disposal of property, plant and equipment | 159 | 5 | 44 | 4 |
Acquisition of intangible assets | (11,305) | (381) | (282) | (10,380) |
Acquisition of investment properties | 0 | 0 | 0 | 0 |
Decrease (increase) in other noncurrent assets | (788) | (27) | 63 | 72 |
Interest received | 233 | 8 | 198 | 337 |
Cash dividends received | 675 | 23 | 1,066 | 907 |
Net cash used in investing activities | (36,721) | (1,239) | (21,663) | (30,453) |
CASH FLOWS FROM FINANCING ACTIVITIES | ||||
Proceeds from short-term loans | 6,952 | 235 | 1,415 | 2,750 |
Repayment of short-term loans | (7,020) | (237) | (1,387) | (3,258) |
Repayment of long-term loans | 0 | 0 | (150) | (190) |
Decrease in customers’ deposits | (111) | (4) | (294) | (37) |
Increase (decrease) in other noncurrent liabilities | (37) | (1) | (104) | 12 |
Cash dividends paid | (38,336) | (1,293) | (42,551) | (37,673) |
Partial disposal of interests in subsidiaries without losing control | 106 | 4 | 83 | 45 |
Cash dividends distributed to noncontrolling interests | (942) | (32) | (710) | (350) |
Change in other noncontrolling interests | 2,777 | 94 | 1,180 | (485) |
Unclaimed dividend | 3 | 0 | 0 | 0 |
Net cash used in financing activities | (36,608) | (1,234) | (42,518) | (39,186) |
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS | 122 | 4 | 58 | 25 |
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | (2,275) | (76) | 829 | 6,711 |
CASH AND CASH EQUIVALENTS, BEGINNING OF THE YEAR | 31,100 | 1,049 | 30,271 | 23,560 |
CASH AND CASH EQUIVALENTS, END OF THE YEAR | $ 28,825 | $ 973 | $ 31,100 | $ 30,271 |
General
General | 12 Months Ended |
Dec. 31, 2017 | |
General Information [Abstract] | |
General | 1. GENERAL Chunghwa Telecom Co., Ltd. (“Chunghwa”) was incorporated on July 1, 1996 in the Republic of China (“ROC”) pursuant to the Article 30 of the Telecommunications Act. Chunghwa is a company limited by shares and, prior to August 2000, was wholly owned by the Ministry of Transportation and Communications (“MOTC”). Prior to July 1, 1996, the current operations of Chunghwa were carried out under the Directorate General of Telecommunications (“DGT”). The DGT was established by the MOTC in June 1943 to take primary responsibility in the development of telecommunications infrastructure and to formulate policies related to telecommunications. On July 1, 1996, the telecom operations of the DGT were spun-off as Chunghwa which continues to carry out the business and the DGT continues to be the industry regulator. As the dominant telecommunications service provider of domestic and international fixed-line, Global System for Mobile Communications (“GSM”), and Third Generation (“3G”) in the ROC, Chunghwa is subject to additional regulations imposed by the ROC. Effective August 12, 2005, the MOTC completed the process of privatizing Chunghwa by reducing the government ownership to below 50% in various stages. In July 2000, Chunghwa received approval from the Securities and Futures Commission (the “SFC”) for a domestic initial public offering and its common stocks were listed and traded on the Taiwan Stock Exchange (the “TWSE”) on October 27, 2000. Certain of Chunghwa’s common stocks were sold, in connection with the foregoing privatization plan, in domestic public offerings at various dates from August 2000 to July 2003. Certain of Chunghwa’s common stocks were also sold in an international offering of securities in the form of American Depository Shares (“ADS”) on July 17, 2003 and were listed and traded on the New York Stock Exchange (the “NYSE”). The MOTC sold common stocks of Chunghwa by auction in the ROC on August 9, 2005 and completed the second international offering on August 10, 2005. Upon completion of the share transfers associated with these offerings on August 12, 2005, the MOTC owned less than 50% of the outstanding shares of Chunghwa and completed the privatization plan. Chunghwa together with its subsidiaries are hereinafter referred to collectively as “the Company”. |
Approval of Financial Statement
Approval of Financial Statements | 12 Months Ended |
Dec. 31, 2017 | |
Text Block1 [Abstract] | |
Approval of Financial Statements | 2. APPROVAL OF FINANCIAL STATEMENTS The consolidated financial statements were authorized for issue by the management on April 19, 2018. |
Summary of Significant Accounti
Summary of Significant Accounting Policies | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Summary Of Significant Accounting Policies [Abstract] | |
Summary of Significant Accounting Policies | 3. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Statement of Compliance The accompanying consolidated financial statements have been prepared in conformity with International Financial Reporting Standards as issued by the International Accounting Standards Board (collectively, “IFRSs”). Basis of Preparation The consolidated financial statements have been prepared on the historical cost basis except for certain financial instruments that are measured at fair values and net defined benefit liabilities (assets) which are measured at the present value of the defined benefit obligation less the fair value of plan assets. Current and Noncurrent Assets and Liabilities Current assets include: a. Assets held primarily for the purpose of trading; b. Assets expected to be realized within twelve months after the reporting period; and c. Cash and cash equivalents unless the asset is restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period. Current liabilities include: a. Liabilities held primarily for the purpose of trading; b. Liabilities due to be settled within twelve months after the reporting period; and c. Liabilities for which the Company does not have an unconditional right to defer settlement for at least twelve months after the reporting period. Assets and liabilities that are not classified as current are classified as noncurrent. Light Era Development Co., Ltd. (LED) engages mainly in development of property for rent and sale. The assets and liabilities of LED related to property development within its operating cycle, which is over one year, are classified as current items. Basis of Consolidation a. Principles for preparing consolidated financial statements The consolidated financial statements incorporate the financial statements of Chunghwa and entities controlled by Chunghwa (its subsidiaries). Income and expenses of subsidiaries acquired during the period are included in the consolidated statements of comprehensive income from the acquisition date. When necessary, adjustments are made to the financial statements of subsidiaries to bring their accounting policies in line with those used by the Company. All inter-company transactions, balances, income and expenses are eliminated in full upon consolidation. Attribution of total comprehensive income to the noncontrolling interests Profit or loss and each component of other comprehensive income are attributed to the stockholders of the parent and to the noncontrolling interests. Total comprehensive income of subsidiaries is attributed to the stockholders of the parent and to the noncontrolling interests even if it results in the noncontrolling interests having a deficit balance. Changes in the Company’s ownership interests in subsidiaries Changes in the Company’s ownership interests in subsidiaries that do not result in the Company losing control over the subsidiaries are accounted for as equity transactions. The carrying amounts of the Company’s interests and the noncontrolling interests are adjusted to reflect the changes in their relative interests in the subsidiaries. Any difference between the amount by which the noncontrolling interests are adjusted and the fair value of the consideration paid or received is recognized directly in equity and attributed to stockholders of the parent. b. The subsidiaries in the consolidated financial statements 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 2016 2017 Note Chunghwa Telecom Co., Ltd. Senao International Co., Ltd. (“SENAO”) Handset and peripherals retailer; sales of CHT mobile phone plans as an agent 29 29 1) 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 69 67 2) CHYP Multimedia Marketing & Communications Co., Ltd. (“CHYP”) Digital information supply services and advertisement services 100 100 3) Prime Asia Investments Group Ltd. (B.V.I.) (“Prime Asia”) Investment 100 100 Spring House Entertainment Tech. Inc. (“SHE”) Digital entertainment contents production, animated character licensing and endorsement, and mobile digital platform construction 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”) Telecommunication 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 4) Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”) International private leased circuit, IP VPN service, ICT and cloud VAS services — 100 5) (Continued) Percentage of Ownership December 31 Name of Investor Name of Investee Main Businesses and Products 2016 2017 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 6) New Prospect Investments Holdings Ltd. (B.V.I.) (“New Prospect”) Investment 100 — 7) 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 89 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 8) 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 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 100 100 9) Spring House Entertainment Tech. Inc. Ceylon Innovation Co., Ltd. (“CEI”) E-book publishing and copyright negotiation of digital music — — 10) Chunghwa Investment Co., Ltd. Chunghwa Precision Test Tech. Co., Ltd. (“CHPT”) Production and sale of semiconductor testing components and printed circuit board 41 38 11) Chunghwa Investment Holding Co., Ltd. (“CIHC”) Investment — — 12) 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 100 — 13) 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 2016 2017 Note Chunghwa Investment Holding Co., Ltd. CHI One Investment Co., Limited (“COI”) Investment — — 14) Senao International HK Limited Senao Trading (Fujian) Co., Ltd. (“STF”) Sale of information and communication technologies products 100 100 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 100 100 15) Senao International Trading (Jiangsu) Co., Ltd. (“SITJ”) Sale of information and communication technologies products 100 100 17) 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 75 16) Chunghwa Precision Test Tech. International, Ltd. Shanghai Taihua Electronic Technology Limited (“STET”) Design of printed circuit board and related consultation service 100 100 (Concluded) 1 ) The Company owns 28.93% equity shares of SENAO. Chunghwa had originally four out of seven seats of the Board of Directors of SENAO through the support of large beneficial stockholders. In order to comply with the local regulations, SENAO increased two seats of independent directors in June 2016; therefore, total seats of its Board of Directors increased to nine and Chunghwa continues to hold four out of nine seats of the Board of Directors. As Chunghwa remains the control over SENAO’s relevant activities, the accounts of SENAO are included in the consolidated financial statements. 2) 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% 3) Chunghwa International Yellow Pages Co., Ltd changed its name to CHYP Multimedia Marketing & Communications Co., Ltd starting from September 4, 2017. 4) Chunghwa invested 75% equity shares of Chunghwa Leading Photonics Tech Co., Ltd. (“CLPT”) in July 2016. 5) Chunghwa invested 100% equity shares of Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”) in March 2017. 6) Chunghwa invested 80% equity shares of CHT Security Co., Ltd. (“CHTSC”) in December 2017. 7 ) New Prospect was approved to dissolve its business in April 2017. The liquidation of New Prospect was completed in May 2017. 8 ) SENAO invested 100% equity shares of SENYOUNG Insurance Agent Co., Ltd. (“SENYOUNG”) in November 2017. 9 ) Concord was approved to end and dissolve its business in August 2017. The liquidation of Concord was completed in January 2018. 10 ) CEI’s liquidation was completed in August 2016 and SHE received the proceeds from the liquidation. 11 ) CHI disposed of some shares of CHPT in March 2016. Furthermore, CHI did not participate in the capital increase of CHPT in March 2016 and September 2017. Therefore, its ownership interest in CHPT decreased to 38.30%. 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. 1 2 ) CIHC’s dissolution was approved in August 2016 and the liquidation was completed in September 2016. CHI received the proceeds from the liquidation. 1 3 ) GNSS (Shanghai) completed its liquidation in August 2017 and Concord received the proceeds from the liquidation. 1 4 ) COI completed its liquidation in July 2016 and CIHC received the proceeds from the liquidation. 1 5 ) SEITS was approved to end and dissolve its business in March 2017. The liquidation of SEITS was completed in March 2018. 1 6 ) JZIT was approved to end and dissolve its business in May 2016. The liquidation of JZIT is still in process. 1 7 ) SITJ was approved to end and dissolve its business in April 2018. The liquidation of SITJ is still in process. 1 8 ) LED invested 60% equity shares of Taoyuan Asia Silicon Valley Innovation Co., Ltd. (“TASVI”) in March 2018. The following diagram presents information regarding the relationship and ownership percentages between Chunghwa and its subsidiaries as of December 31, 2017: Business Combination Acquisitions of businesses are accounted for using the acquisition method. Acquisition-related costs are recognized in profit or loss as incurred. Goodwill is measured as the excess of the sum of the consideration transferred, the amount of any noncontrolling interests in the acquiree, and the fair value of the acquirer’s previously held equity interest in the acquiree over the net of the acquisition-date amounts of the identifiable assets acquired and the liabilities assumed. Noncontrolling interests that are present ownership interests and entitle their holders to a proportionate share of the entity’s net assets in the event of liquidation may be initially measured either at fair value or at the present ownership instruments’ proportionate share in the recognized amounts of the acquiree’s identifiable net assets. The choice of measurement basis is made on a transaction-by-transaction basis. Other types of noncontrolling interests are measured at fair value. If the initial accounting for a business combination is incomplete by the end of the reporting period in which the combination occurs, the Company reports its financial statements provisional amounts for the items for which the accounting is incomplete. During the measurement period, the Company retrospectively adjusts the provisional amounts recognized at the acquisition date or recognizes additional assets or liabilities to reflect new information obtained about facts and circumstances that existed as of the acquisition date and if known, would have affected the measurement of the amounts recognized as of that date. Foreign Currencies In preparing the financial statements of each individual entity, transactions in currencies other than the entity’s functional currency (foreign currencies) are recognized at the rates of exchange prevailing at the dates of the transactions. At the end of each reporting period, monetary items denominated in foreign currencies are retranslated at the rates prevailing at that date. Exchange differences on monetary items arising from settlement or translation denominated in foreign currencies are recognized in profit or loss in the period in which they arise. Non-monetary items carried at fair value that are denominated in foreign currencies are retranslated at the rates prevailing at the date when the fair value was determined and related exchange differences are recognized in profit or loss. Conversely, when the fair value changes were recognized in other comprehensive income, related exchange difference shall be recognized in other comprehensive income. Non-monetary items that are measured at historical cost in a foreign currency are not retranslated. Chunghwa uses New Taiwan dollars (NT$) as the functional currency. For the purposes of presenting consolidated financial statements, the assets and liabilities of the Company’s foreign operations (including of the subsidiaries and associates in other countries or currencies used different with Chunghwa) are translated into New Taiwan dollars using exchange rates prevailing at the end of each reporting period. Income and expense items are translated at the average exchange rates for the period. Exchange differences arising, if any, are recognized in other comprehensive income and attributed to stockholders of the parent and noncontrolling interests as appropriate. Cash Equivalents Cash equivalents include commercial paper, time deposits and negotiable certificate of deposit with original maturities within three months from the date of acquisition, highly liquid, readily convertible to a known amount of cash and are subject to an insignificant risk of changes in value. These cash equivalents are held for the purpose of meeting short-term cash commitments. Inventories Inventories are stated at the lower of cost or net realizable value item by item, except for those that may be appropriate to group items of similar or related inventories. Net realizable value is the estimated selling price of inventories less all estimated costs of completion and costs necessary to make the sale. The calculation of the cost of inventory is derived using the weighted-average method. Buildings and Land Consigned to Construction Contractors Inventories of LED are stated at the lower of cost or net realizable value item by item, except for those that may be appropriate to group as similar items or related inventories. Land acquired before construction is classified as land held for development, and then reclassified as land held under development after LED begins its construction project. When using the completed-contract method for its construction projects, LED recognizes the proceeds from customers as advances from customers for land and building before the construction project is completed. After completion of the construction project and ownership is transferred to the customers, LED recognizes the relevant revenues. Investments in Associates and Joint Ventures An associate is an entity over which the Company has significant influence and that is neither a subsidiary nor an interest in a joint venture. A joint venture is a joint arrangement whereby the Company and other parties that have joint control of the arrangement have rights to the net assets of the arrangement. Investments accounted for using the equity method include investments in associates and interests in joint ventures. Under the equity method, an investment in an associate or a joint venture is initially recognized at cost and adjusted thereafter to recognize the Company’s share of profit or loss and other comprehensive income of the associate and joint venture as well as the distribution received. When the Company reduces its ownership interest in an associate or a joint venture but the Company continues to use the equity method, the Company reclassifies to profit or loss the proportion of the gain or loss that had previously been recognized in other comprehensive income relating to that reduction in ownership interest if that gain or loss would be reclassified to profit or loss on the disposal of the related assets or liabilities. Any excess of the cost of acquisition over the Company’s share of the fair value of the identifiable net assets and liabilities of an associate or a joint venture at the date of acquisition is recognized as goodwill, which is included within the carrying amount of the investment and shall not be amortized. Any excess of the Company’s share of the net fair value of the identifiable assets and liabilities over the cost of acquisition is recognized immediately in profit or loss. When necessary, the entire carrying amount of the investment (including goodwill) is tested for impairment as a single asset by comparing its recoverable amount with its carrying amount. Any impairment loss recognized forms part of the carrying amount of the investment. Any reversal of that impairment loss is recognized to the extent that the recoverable amount of the investment subsequently increases. When the Company transacts with its associate and joint venture, profits and losses resulting from the transactions with the associate and joint venture are recognized in the Company’s consolidated financial statements only to the extent of interests in the associate and joint venture that are not related to the Company. Property, Plant and Equipment Property, plant and equipment are initially measured at cost and subsequently measured at cost less accumulated depreciation and accumulated impairment loss. Depreciation on property, plant and equipment is recognized using the straight-line method. Each significant part is depreciated separately. The estimated useful lives, residual values and depreciation method are reviewed at the end of each year, with the effect of any changes in estimate accounted for on a prospective basis. On derecognition of an item of property, plant and equipment, the difference between the net disposal proceeds and the carrying amount of the asset is recognized in profit or loss in the period in which the property is derecognized. Investment Properties Investment properties are properties held to earn rentals and/or for capital appreciation. Investment properties also include land held for a currently undetermined future use. Investment properties are measured initially at cost, including transaction costs. Subsequent to initial recognition, investment properties are measured at cost less accumulated depreciation and accumulated impairment loss. Depreciation is recognized using the straight-line method. On derecognition of the investment properties, the difference between the net disposal proceeds and the carrying amount of the asset is recognized in profit or loss in the period in which the property is derecognized. Goodwill Goodwill arising from the acquisition of a business is carried at cost as established at the date of acquisition of the business less accumulated impairment loss. For the purpose of impairment testing, goodwill is allocated to each of the Company’s cash-generating units or groups of cash-generating units (referred to as “cash-generating unit”) that are expected to benefit from the synergies of the business combination. A cash-generating unit to which goodwill has been allocated is tested for impairment annually, or more frequently when there is an indication that the unit may be impaired, by comparing its carrying amount, including the attributable goodwill, with its recoverable amount. However, if the goodwill allocated to a cash-generating unit was acquired in a business combination during the current annual period, that unit shall be tested for impairment before the end of the current annual period. Intangible Assets Other Than Goodwill Intangible assets with finite useful lives that are acquired separately Intangible assets acquired in a business combination and recognized separately from goodwill are initially recognized at their fair value at the acquisition date (which is regarded as their cost). Subsequent to initial recognition, they are measured on the same basis as intangible assets that are acquired separately. Gains or losses arising from derecognition of an intangible asset, measured as the difference between the net disposal proceeds and the carrying amount of the asset, are recognized in profit or loss in the period in which the asset is derecognized. Impairment of Tangible and Intangible Assets Other Than Goodwill At the end of each reporting period, the Company reviews the carrying amounts of its tangible and intangible assets, excluding goodwill, to determine whether there is any indication that those assets have suffered an impairment loss. If any such indication exists, the recoverable amount of the asset is estimated in order to determine the extent of the impairment loss. When it is not possible to estimate the recoverable amount of an individual asset, the Company estimates the recoverable amount of the cash-generating unit to which the asset belongs. Intangible assets with indefinite useful lives and intangible assets not yet available for use are tested for impairment at least annually, and whenever there is an indication that the asset may be impaired. Recoverable amount is the higher of fair value less costs to sell and value in use. If the recoverable amount of an asset or cash-generating unit is estimated to be less than its carrying amount, the carrying amount of the asset or cash-generating unit is reduced to its recoverable amount, with the resulting impairment loss recognized in profit or loss. When an impairment loss is subsequently reversed, the carrying amount of the asset or cash-generating unit is increased to the revised estimate of its recoverable amount, but only to the extent of the carrying amount that would have been determined had no impairment loss been recognized for the asset or cash-generating unit in prior years. A reversal of an impairment loss is recognized in profit or loss. Financial Instruments Financial assets and financial liabilities are recognized when the Company becomes a party to the contractual provisions of the instruments. Financial assets and financial liabilities are initially measured at fair value. Transaction costs that are directly attributable to the acquisition or issue of financial assets and financial liabilities (other than financial assets and financial liabilities at fair value through profit or loss) are added to or deducted from the fair value of the financial assets or financial liabilities, as appropriate, on initial recognition. Transaction costs directly attributable to the acquisition of financial assets or financial liabilities at fair value through profit or loss are recognized immediately in profit or loss. a. Financial assets All regular way purchases or sales of financial assets are recognized and derecognized on a trade date basis. The regular way of transaction means the purchase or sale of financial assets delivered within the time frame established by regulation or convention in the marketplace. 1) Measurement category a) Financial assets at fair value through profit and loss (FVTPL) Financial assets are classified as at FVTPL when the financial asset is held for trading. Financial assets at FVTPL are stated at fair value, with any gains or losses arising on remeasurement recognized in profit or loss. The net gain or loss recognized in profit or loss does not incorporate any dividend or interest earned on the financial asset. b) Held-to-maturity financial assets Held-to-maturity financial assets are non-derivative financial assets with fixed or determinable payments and fixed maturity date that the Company has positive intention and ability to hold to maturity other than those that are designated as at fair value through profit or loss or as available-for-sale and those that meet the definition of loans and receivables on initial recognition. The Company invests in bank debentures and corporate bonds with specific credit ratings and the Company has positive intent and ability to hold to maturity, are classified as held-to-maturity investments. Subsequent to initial recognition, held-to-maturity financial assets are measured at amortized cost using the effective interest method less any impairment loss. c) Available-for-sale financial assets (AFS financial assets) AFS financial assets are non-derivatives that are either designated as AFS or are not classified as loans and receivables, held-to-maturity financial assets or financial assets at fair value through profit or loss. The Company invests in listed stocks, emerging market stocks, and unlisted stocks. Among these investments, those that have a quoted market price in an active market are classified as AFS and measured at fair value at the end of each reporting period; the others that do not have a quoted market price in an active market and whose fair value cannot be reliably measured are measured at cost less any identified impairment losses at the end of each reporting period. If, in a subsequent period, the fair value of the financial assets can be reliably measured, the financial assets are remeasured at fair value. The difference between the carrying amount and the fair value is recognized in other comprehensive income. Any impairment losses are recognized in profit or loss. Changes in the carrying amount of AFS monetary financial assets relating to changes in foreign currency exchange rates, interest income calculated using the effective interest method and dividends on AFS equity investments are recognized in profit or loss. Other changes in the carrying amount of AFS financial assets are recognized in other comprehensive income and will be reclassified to profit or loss when the investment is disposed of or is determined to be impaired. Dividends on AFS equity instruments are recognized in profit or loss when the Company’s right to receive the dividends is established. d) Loans and receivables Loans and receivables are non-derivative financial assets with fixed or determinable payments that are not quoted in an active market. Loans and receivables (including cash and cash equivalents, trade notes and accounts receivable, receivables from related parties, other financial assets and refundable deposits) are measured at amortized cost using the effective interest method, less any impairment loss, except for short-term receivables as the effect of discounting is immaterial. 2) Impairment of financial assets Financial assets, other than those at FVTPL, are assessed to determine whether there is objective evidence that an impairment loss has occurred at the end of each reporting period. Financial assets are considered to be impaired when there is objective evidence that, as a result of one or more events that occurred after the initial recognition of the financial asset, the estimated future cash flows of the investment have been affected. For financial assets carried at amortized cost, such as held-to-maturity financial assets, and trade notes and accounts receivable, assets that are individually assessed and not impaired are, in addition, assessed for impairment on a collective basis. For financial assets carried at amortized cost, the amount of the impairment loss recognized is mainly based on the difference between the asset’s carrying amount and the present value of estimated future cash flows, discounted at the financial asset’s original effective interest rate. However, since the discounted effect of short-term receivables is immaterial, the impairment loss is recognized on the difference between carrying amount and estimated future cash flow. For financial assets measured at amortized cost, if, in a subsequent period, the amount of the impairment loss decreases and the decrease can be related objectively to an event occurring after the impairment was recognized, the previously recognized impairment loss is reversed through profit or loss to the extent that the carrying amount of the investment at the date the impairment is reversed does not exceed what the amortized cost would have been had the impairment not been recognized. For AFS equity investments, a significant or prolonged decline in the fair value of the security below its cost is considered to be objective evidence of impairment. When an AFS financial asset is considered to be impaired, cumulative gains or losses previously recognized in other comprehensive income are reclassified to profit or loss in the period. In respect of AFS equity securities, impairment losses previously recognized in profit or loss are not reversed through profit or loss. Any increase in fair value subsequent to an impairment loss is recognized in other comprehensive income. For financial assets that are carried at cost, the amount of the impairment loss is mainly measured as the difference between the asset’s carrying amount and the present value of the estimated future cash flows discounted at the current market rate of return for a similar financial asset. Such impairment loss is not reversed in subsequent periods. The carrying amount of the financial asset is reduced by the impairment loss directly for all financial assets with the exception of trade notes and accounts receivable and other receivables, where the carrying amount is reduced through the use o |
Critical Accounting Judgments a
Critical Accounting Judgments and Key Sources of Estimation, Uncertainty and Assumption | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Accounting Judgements And Estimates [Abstract] | |
Critical Accounting Judgments and Key Sources of Estimation, Uncertainty and Assumption | 4. CRITICAL ACCOUNTING JUDGMENTS AND KEY SOURCES OF ESTIMATION, UNCERTAINTY AND ASSUMPTION In the application of the Company’s accounting policies, which are described in Note 3, the management is required to make judgments, estimates and assumptions which are based on historical experience and other factors that are not readily apparent from other sources. Actual results may differ from these estimates. The estimates and underlying assumptions are reviewed by the management on an ongoing basis. Revisions to accounting estimates are recognized in the period in which the estimate is revised if the revision affects only that period or in the period of the revision and future periods if the revision affects both current and future periods. The following are the key assumptions concerning the future, and other key sources of estimation and uncertainty at the end of the reporting period. Actual results may differ from these estimates. a. Revenue recognition The Company’s project agreements are mainly to provide one or more equipment or services to customers. In order to fulfill the agreements, another party may be involved in some agreements. The Company considers the following factors to determine whether the Company is a principal of the transaction: whether the Company is the primary obligation provider of the agreements, its exposures to inventory risks and the discretion in establishing prices, etc. The determination of whether the Company is a principal or an agent will affect the amount of revenue recognized by the Company. Only when the Company is acting as a principal, gross inflows of economic benefits arising from transactions is recognized as revenue. b . Impairment of trade notes and accounts receivable When there is objective evidence showed indications of impairment, the Company considers the estimation of future cash flows. The amount of impairment will be measured at the difference between the carrying amount and the present value of estimated future cash flows discounted by the original effective interest rates of the financial assets. However, as the impact from discounting short-term receivables is not material, the impairment of short-term receivables is measured at the difference between the carrying amount and the estimated undiscounted future cash flows. Where the actual future cash flows are lower than expected, a material impairment loss may arise. c . Provision for inventory valuation and obsolescence Inventories are stated at the lower of cost or net realizable value. Estimates of net realizable value are based on the most reliable evidence available at the time the estimates are made at the end of reporting period. These estimates take into consideration fluctuations of price or cost directly relating to events occurring after the end of the period to the extent that such events confirm conditions existing at the end of the period. Inventory write-downs are determined on an item by item basis, except for those similar items which could be categorized into the same groups. The Company uses the inventory holding period and turnover as the evaluation basis for inventory obsolescence losses. d . Impairment of tangible and intangible assets In the process of evaluating the potential impairment of tangible and intangible assets, the Company is required to consider internal and external indicators of impairment and make subjective judgments in determining the independent cash flows, useful lives, expected future revenue and expenses related to the specific asset groups within the context of the telecommunication industry. Any changes in these estimates based on changed economic conditions or business strategies could result in significant impairment charges in future periods. e . Useful lives of property, plant and equipment As discussed in Note 3, “Summary of Significant Accounting Policies - Property, Plant and Equipment”, the Company reviews estimated useful lives of property, plant and equipment at the end of each year. f . Recognition and measurement of defined benefit plans Net defined benefit liabilities and the resulting pension expense under defined benefit pension plans are calculated using the Projected Unit Credit Method. Actuarial assumptions comprise the discount rate, rate of employee turnover, and long-term average future salary increase. Changes in economic circumstances and market conditions will affect these assumptions and may have a material impact on the amount of the expense and the liability. g . Control over subsidiaries As discussed in Note 3, some entities are subsidiaries of the Company although the Company only owns less than 50% ownership interests in these entities. After considering the Company's absolute size of holding in the entity and the relative size of and the dispersion of shares owned by the other stockholders, and the contractual arrangements between the Company and other investors, potential voting interests and the written agreement between stockholders, the management concluded that the Company has a sufficiently dominant voting interest to direct the relevant activities of the entity and therefore the Company has control over these entities. |
Application of New and Amended
Application of New and Amended International Financial Reporting Standards | 12 Months Ended |
Dec. 31, 2017 | |
Description Of Expected Impact Of Initial Application Of New Standards Or Interpretations [Abstract] | |
Application of New and Amended International Financial Reporting Standards | 5. APPLICATION OF NEW AND AMENDED INTERNATIONAL FINANCIAL REPORTING STANDARDS Amendments to IFRSs and the New Interpretation That Are Mandatorily Effective for the Current Year The Company has applied the amendments to IFRS 12 included in the Annual Improvements to IFRSs 2014-2016 Cycle, Amendments to IAS 7: Disclosure Initiative, and Amendments to IAS 12: Recognition of Deferred Tax Assets for Unrealized Losses for the first time in 2017. The application of these amendments has had no impact on the disclosures or amounts recognized in the Company's consolidated financial statements. New and Amended IFRSs in Issue But Not Yet Effective The Company has not applied the following new and amended IFRSs that have been issued but are not yet effective. New or Amended Standards and Interpretations Effective Date Issued by IASB (Note 1) Amendments to IFRSs Annual Improvements to IFRSs 2014-2016 Cycle Note 2 Amendments to IFRSs Annual Improvements to IFRSs 2015-2017 Cycle January 1, 2019 Amendments to IFRS 2 Classification and Measurement of Share-based Payment Transactions January 1, 2018 IFRS 9 Financial Instruments January 1, 2018 Amendments to IFRS 9 and IFRS 7 Mandatory Effective Date of IFRS 9 and Transition Disclosures January 1, 2018 Amendments to IFRS 9 Prepayment Features with Negative Compensation January 1, 2019 Amendments to IFRS 10 and IAS 28 Sale or Contribution of Assets between an Investor and its Associate or Joint Venture To be determined by IASB IFRS 15 Revenue from Contracts with Customers January 1, 2018 Amendments to IFRS 15 Clarifications to IFRS 15 January 1, 2018 IFRS 16 Leases January 1, 2019 Amendments to IAS 40 Transfers of investment property January 1, 2018 IFRIC 22 Foreign Currency Transactions and Advance Consideration January 1, 2018 Amendments to IAS 28 Long-term Interests in Associates and Joint Ventures January 1, 2019 IFRIC 23 Uncertainty Over Income Tax Treatments January 1, 2019 Amendments to IAS 19 Plan Amendment, Curtailment or Settlement January 1, 2019 (Note 3) Note 1: The aforementioned new or amended standards or interpretations are effective after fiscal year beginning on or after the effective dates, unless specified otherwise. Note 2: The Company has applied the amendment to IFRS 12 included in the Annual Improvements to IFRSs 2014-2016 Cycle for the first time in 2017; the amendment to IAS 28 is retrospectively applied for annual periods beginning on or after January 1, 2018. Note 3: Companies shall apply the amendments to pension plan amendments, curtailments or settlements occurring on or after January 1, 2019. Except for the following items, the Company believes the adoption of the aforementioned new and amended IFRSs will not have material impact on the Company’s consolidated financial statements. a . IFRS 15 “Revenue from Contracts with Customers” and related amendments IFRS 15 establishes principles for recognizing revenue that apply to all contracts with customers, and will supersede IAS 18 “Revenue”, IAS 11 “Construction Contracts” and a number of revenue-related interpretations. When applying IFRS 15, the Company shall recognize revenue by applying the following steps: 1) Identify the contract with the customer; 2) Identify the performance obligations in the contract; 3) Determine the transaction price; 4) Allocate the transaction price to the performance obligations in the contracts; and 5) Recognize revenue when the entity satisfies a performance obligation. Upon the application of IFRS 15 and its related amendments, the Company will allocate the transaction price to each performance obligation identified in the contract on a relative stand-alone selling price basis. Where the Company enters into transactions which involve both the provision of telecommunications service bundled with products such as handsets, total consideration received from products and telecommunications service in these arrangements is allocated based on each performance obligation’s relative selling price. The amount of sales revenue recognized for products is no longer limited to the amount paid by the customer for the products. This will not change the total revenue recognized, but will change the timing of revenue recognition. The Company may recognize more revenue at the beginning of the contract period (i.e., at the time of sale of products), and revenue recognized for telecommunications service in the subsequent contract periods will decrease. Incremental costs of obtaining a contract will be recognized as an asset to the extent the Company expects to recover those costs. Such asset will be amortized on a basis that is consistent with the transfer to the customer of the goods or services to which the asset relates. Before the application of IFRS 15, the relevant expenditures were recognized as expenses. IFRS 15 and its related amendments require that when another party is involved in providing goods or services to a customer, the Company is a principal if it controls the specified good or service before that good or service is transferred to a customer. Before the application of IFRS 15, the Company determines whether it is a principal or an agent based on its exposure to the significant risks and rewards associated with the sale of goods or the rendering of services.Under IFRS 15, the net effect of revenue recognized, consideration received and receivable is recognized as a contract asset or a contract liability. Before the application of IFRS 15, receivable is recognized or advance receipts and deferred revenue is reduced when revenue is recognized for the contract under IAS 18. Under IFRS 15, the Company will recognize a trade-in liability (other current liability) and a right to recover a product (other current asset) when recognizing revenue for the sale with a trade-in right. Before the application of IFRS 15, trade-in right provisions and inventories are recognized when recognizing revenue. The Company elected to retrospectively apply IFRS 15 to contracts that were not completed on January 1, 2018 and recognized the cumulative effect of the change in the retained earnings on January 1, 2018. In addition, the Company will disclose the difference between the amounts that result from applying IFRS 15 and the amounts that result from applying current standards for 2018. The anticipated significant impact on assets, liabilities and equity when retrospectively applying IFRS 15 on January 1, 2018 is showed as follows (The following table only disclosed the summary of differences arising from recognitions and measurements. The differences arising from presentations are not included.): Carrying Amount as of December 31, 2017 Adjustments Arising from Initial Application of IFRS 15 Adjusted Carrying Amount as of January 1, 2018 NT$ NT$ NT$ (In Millions) Contract assets - current $ — $ 6,998 $ 6,998 Contract assets - noncurrent $ — 3,917 $ 3,917 Incremental costs to obtain a contract $ — 2,467 $ 2,467 Total effect on assets $ 13,382 Contract liability - current $ — $ 197 $ 197 Contract liability - noncurrent $ — 86 $ 86 Current tax liabilities $ 8,674 2,227 $ 10,901 Total effect on liabilities $ 2,510 Total effect on equity (unappropriated earnings) $ 54,633 $ 10,872 $ 65,505 b. IFRS 9 “Financial Instruments” and related amendments With regard to financial assets, all recognized financial assets that are within the scope of IAS 39 “Financial Instruments: Recognition and Measurement” are subsequently measured at amortized cost or fair value. Non-debt financial instruments held by the Company are measured at fair values. Changes in fair values are recognized in profit or loss. However, the Company may make an irrevocable election to designate equity investments that are not held for trading as financial assets at fair value through other comprehensive income with only dividend income recognized in profit or loss and subsequent changes in the fair value of an equity investment recognized in other comprehensive income. No subsequent impairment assessment is required, and the cumulative gain or loss previously recognized in other comprehensive income cannot be reclassified from equity to profit or loss. The Company analyzed the facts and circumstances of its financial assets that exist at December 31, 2017 and performed the assessment of the impact of IFRS 9 on the classification and measurement of financial assets. Under IFRS 9, except the available-for-sale financial asset listed on the TWSE will be designated as financial asset at fair value through other comprehensive income, other listed available-for-sale equity investment will be designated as financial asset at fair value through profit or loss. In addition, investments in unlisted shares measured at cost will be measured at fair value, and designated as financial assets at fair value through other comprehensive income at initial recognition. IFRS 9 introduces a new expected loss impairment model to measure the impairment of financial assets and recognize loss allowance for the related expected credit losses. If the credit risk on a financial instrument has not increased significantly since initial recognition, the loss allowance for that financial instrument should be measured at an amount equal to 12-month expected credit losses. If the credit risk on a financial instrument has increased significantly since initial recognition and is not deemed to be a low credit risk, the loss allowance for that financial instrument should be measured at an amount equal to the lifetime expected credit losses. A simplified approach is used for trade accounts receivables and contract assets and the loss allowance for these financial instruments could be measured at an amount equal to lifetime expected credit losses. As a result of retrospective application of expected loss impairment model, there was no material impact on the Company’s consolidated financial statements. The Company elected not to restate prior reporting periods when applying the requirements for the financial assets under IFRS 9 with the cumulative effect of the initial application recognized at the date of initial application and will provide the disclosures related to the classification and the adjustment information upon the application of IFRS 9. The anticipated significant impact on assets, liabilities and equity of retrospective application of the IFRS 9 on January 1, 2018 is set out below: Carrying Amount as of December 31, 2017 Adjustments Arising from Initial Application of IFRS 9 Adjusted Carrying Amount as of January 1, 2018 NT$ NT$ NT$ (In Millions) Impact on assets, liabilities and equity Financial assets at fair value through profit or loss - noncurrent $ — $ 54 $ 54 Financial assets at fair value through other comprehensive income - noncurrent $ — 7,539 $ 7,539 Available-for-sale financial assets - noncurrent $ 5,751 (5,751 ) $ — Total effect on assets $ 1,842 Total effect on liabilities (deferred income tax liabilities) $ 1,430 $ (1 ) $ 1,429 Unrealized gain or loss on available-for-sale financial assets $ 558 $ (558 ) $ — Unrealized gain or loss on financial assets at fair value through other comprehensive income $ — 883 $ 883 Unappropriated earnings $ 54,633 1,522 $ 56,155 Noncontrolling interests $ 8,474 (4 ) $ 8,470 Total effect on equity $ 1,843 c . IFRS 16 “Leases” IFRS 16 sets out the accounting standards for leases that will supersede IAS 17 and a number of related interpretations. Under IFRS 16, if the Company is a lessee, it shall recognize right-of-use assets and lease liabilities for all leases on the consolidated balance sheets except for low-value and short-term leases. The Company may elect to apply the accounting method similar to the accounting for operating lease under IAS 17 to the low-value and short-term leases. On the consolidated statements of comprehensive income, the Company should present the depreciation expense charged on the right-of-use asset separately from interest expense accrued on the lease liability and discloses such amounts in the footnotes; interest is computed by using effective interest method. On the consolidated financial statements of cash flows, cash payments for the principal portion of the lease liability are classified within financing activities; cash payments for interest portion are classified within operating activities. The application of IFRS 16 is not expected to have a material impact on the accounting of the Company as lessor. When IFRS 16 becomes effective, the Company may elect to apply this Standard either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of the initial application of this Standard recognized at the date of initial application. Except for the abovementioned impact, as of the date the consolidated financial statements were authorized for issue, the Company is continuously assessing the possible impact that the application of other standards and interpretations will have on the Company’s financial position and operating result, and will disclose the relevant impact when the assessment is completed. |
U.S. Dollar Amounts
U.S. Dollar Amounts | 12 Months Ended |
Dec. 31, 2017 | |
Foreign Exchange Rates [Abstract] | |
U.S. Dollar Amounts | 6 . U.S. DOLLAR AMOUNTS The Company maintains its accounts and expresses its consolidated financial statements in New Taiwan dollars. For readers’ convenience only, U.S. dollar amounts presented in the accompanying consolidated financial statements have been translated from New Taiwan dollars as set forth in the statistical release of the Federal Reserve Board of the United States as of December 29, 2017, which was NT$29.64 to US$1.00. The convenience translations should not be construed as representations that the New Taiwan dollar amounts have been, could have been, or could in the future be, converted into U.S. dollars at this or any other rate of exchange. |
Cash and Cash Equivalents
Cash and Cash Equivalents | 12 Months Ended |
Dec. 31, 2017 | |
Cash And Cash Equivalents [Abstract] | |
Cash and Cash Equivalents | 7. CASH AND CASH EQUIVALENTS December 31 2016 2017 NT$ NT$ (In Millions) Cash Cash on hand $ 370 $ 383 Bank deposits 7,240 7,877 7,610 8,260 Cash equivalents (investments with maturities of less than three months) Commercial paper $ 11,436 $ 10,179 Negotiable certificate of deposit 10,800 7,950 Time deposits 1,254 2,436 23,490 20,565 $ 31,100 $ 28,825 The annual yield rates of bank deposits, commercial paper, negotiable certificate of deposit and time deposits as of balance sheet dates were as follows: December 31 2016 2017 Bank deposits 0.00%-0.42% 0.00%-0.70% Commercial paper 0.32%-0.42% 0.32%-0.40% Negotiable certificate of deposit 0.35%-0.50% 0.40%-0.50% Time deposits 0.40%-3.30% 0.52%-4.40% |
Financial Instruments at Fair V
Financial Instruments at Fair Value Through Profit or Loss | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Financial Instruments [Abstract] | |
Financial Instruments at Fair Value Through Profit or Loss | 8. FINANCIAL INSTRUMENTS AT FAIR VALUE THROUGH PROFIT OR LOSS December 31 2016 2017 NT$ NT$ (In Millions) Financial assets held for trading Derivatives (not designated for hedge) Forward exchange contracts $ — $ — Financial liabilities held for trading Derivatives (not designated for hedge) Forward exchange contracts $ 1 $ 1 Outstanding forward exchange contracts not designated for hedge as of balance sheet dates were as follows: Maturity Contract Amount Currency Period (In Millions) December 31, 2016 Forward exchange contracts - buy EUR/NT$ 2017.03 EUR5/NT$167 Forward exchange contracts - buy US$/NT$ 2017.01 US$2/NT$55 December 31, 2017 Forward exchange contracts - buy EUR/NT$ 2018.03-06 EUR2/NT$69 Forward exchange contracts - buy US$/NT$ 2018.01 US$4/NT$125 The Company entered into the above forward exchange contracts to manage its exposure to foreign currency risk due to fluctuations in exchange rates. However, the aforementioned derivatives did not meet the criteria for hedge accounting. |
Financial Assets
Financial Assets | 12 Months Ended |
Dec. 31, 2017 | |
Financial assets available-for-sale non current, category [Member] | |
Statement [LineItems] | |
Financial Assets | 9. AVAILABLE-FOR-SALE FINANCIAL ASSETS - NONCURRENT December 31 2016 2017 NT$ NT$ (In Millions) Equity securities Domestic listed stocks $ 2,521 $ 3,125 Domestic non-listed stocks 1,949 2,332 Foreign non-listed stocks 294 294 $ 4,764 $ 5,751 CHI evaluated and concluded its listed available-for-sale financial assets were partially impaired and recorded an impairment loss of $26 The fair values of the above non-listed stocks investments cannot be reliably measured due to the range of reasonable fair value estimates was so significant, the above non-listed stocks investments owned by the Company were carried at costs less any impairment losses at the balance sheet dates. The Company invested $300 million to invest Taiwania Capital Buffalo Fund Co., Ltd. in December 2017 and owns 12.9% equity shares of Taiwania Capital Buffalo Fund Co., Ltd.. Taiwania Capital Buffalo Fund Co., Ltd. engaged mainly in investment business. The Company disposed non-listed available-for-sale financial assets with carrying amounts of $2 million, $9 million and $5 million for the years ended 2015, 2016 and 2017, respectively, and recognized the gains (losses) from the disposal of $(0.4) million, $1 million and $3 million for the years ended December 31, 2015, 2016 and 2017, respectively. After the Company evaluated the financial positions and future operation results of non-listed available-for-sale financial assets, the Company concluded some of its investments that have ceased their operations were fully impaired, and recognized an impairment loss of $77 million for the year ended December 31, 2015. In addition, some of its investments were encountering profit recession or deficit. The Company concluded the recoverable amount of such investments which represented present value of estimated future cash flows discounted at the current market rate of return for a similar financial asset or based on the market approach using financial indicators such as PE ratios of the comparable listed companies was lower than the carrying amount. Therefore, the Company recognized impairment losses of $4 million for the year ended December 31, 2015. The Company evaluated and concluded that there was no indication that non-listed available-for-sale financial assets were impaired; therefore, no impairment loss was recognized for the years ended December 31, 2016 and 2017. |
Held-To-Maturity Financial Asse
Held-To-Maturity Financial Assets - Current | 12 Months Ended |
Dec. 31, 2017 | |
Held-to-maturity financial assets [Member] | |
Disclosure of financial assets [Line Items] | |
Held-To-Maturity Financial Assets - Current | 10. HELD-TO-MATURITY FINANCIAL ASSETS - CURRENT December 31 2016 2017 NT$ NT$ (In Millions) Corporate bonds $ 1,990 $ — Bank debentures 150 — $ 2,140 $ — The related information of corporate bonds and bank debentures as of balance sheet dates was as follows: December 31 2016 2017 NT$ NT$ (In Millions) Corporate bonds Par value $ 1,990 $ — Nominal interest rate 1.18%-1.35% — Effective interest rate 1.20%-1.35% — Average remaining maturity life 0.34 year — Bank debentures Par value $ 150 $ — Nominal interest rate 1.25 % — Effective interest rate 1.25 % — Average remaining maturity life 0.41 year — |
Trade Notes and Accounts Receiv
Trade Notes and Accounts Receivable, Net | 12 Months Ended |
Dec. 31, 2017 | |
Trade notes and accounts receivable [Member] | |
Disclosure of financial assets [Line Items] | |
Trade Notes and Accounts Receivable, Net | 11. TRADE NOTES AND ACCOUNTS RECEIVABLE, NET December 31 2016 2017 NT$ NT$ (In Millions) Trade notes and accounts receivable $ 32,795 $ 34,058 Less: Allowance for doubtful accounts (1,773 ) (2,117 ) $ 31,022 $ 31,941 The average credit terms range from 30 to 90 days. In determining the recoverability of trade notes and accounts receivable, the Company considers significant change in the credit quality of the trade notes and accounts receivable from the date credit was initially granted up to the end of the reporting period. In general, with few exceptional cases, it is unlikely for the notes and accounts receivable due longer than 180 days to be collected, therefore the Company recognized 100% allowance of notes and accounts receivable overdue longer than 180 days. For the notes and accounts receivable less than 180 days, the allowance for doubtful accounts was estimated based on the Company’s historical recovery experience. The Company serves a large consumer base; therefore, the concentration of credit risk is limited. The aging analysis for trade notes and accounts receivable as of balance sheet dates was as follows: December 31 2016 2017 NT$ NT$ (In Millions) Non-overdue $ 29,596 $ 30,032 Less than 30 days 1,050 1,280 31-60 days 348 485 61-90 days 286 278 91-120 days 198 253 121-180 days 119 122 More than 181 days 1,198 1,608 $ 32,795 $ 34,058 The above aging analysis was based on days overdue. At the balance sheet dates, the receivables that were past due but not impaired were considered recoverable by the management of the Company. The aging of these receivables as of balance sheet dates was as follows: December 31 2016 2017 NT$ NT$ (In Millions) Less than 30 days $ 256 $ 328 31-60 days 47 36 61-90 days 9 7 91-120 days 74 70 121-180 days 1 1 More than 181 days 13 7 $ 400 $ 449 The above aging analysis was based on days overdue. Movements of the allowance for doubtful accounts were as follows: Individually Assessed for Impairment Collectively Assessed for Impairment Total NT$ NT$ NT$ (In Millions) Balance on January 1, 2015 $ 276 $ 773 $ 1,049 Add: Provision for doubtful accounts 88 392 480 Deduct: Amounts written off — (195 ) (195 ) Balance on December 31, 2015 364 970 1,334 Add: Provision for doubtful accounts 715 228 943 Deduct: Amounts written off (274 ) (230 ) (504 ) Balance on December 31, 2016 805 968 1,773 Add: Provision for doubtful accounts 535 43 578 Deduct: Amounts written off (15 ) (219 ) (234 ) Balance on December 31, 2017 $ 1,325 $ 792 $ 2,117 |
Inventories
Inventories | 12 Months Ended |
Dec. 31, 2017 | |
Classes Of Inventories [Abstract] | |
Inventories | 12. INVENTORIES December 31 2016 2017 NT$ NT$ (In Millions) Merchandise $ 4,136 $ 5,133 Project in process 961 1,390 Work in process 109 152 Raw materials 143 89 5,349 6,764 Land held under development 1,999 1,999 Construction in progress 75 77 $ 7,423 $ 8,840 The operating costs related to inventories were $52,666 million, $54,183 million and $56,342 million for the years ended December 31, 2015, 2016 and 2017, respectively. For the years ended December 31, 2015, 2016 and 2017, the provisions for inventory and obsolescence recognized as operating costs included the amounts of $198 million, $192 million and $52 million, respectively. As of December 31, 2016 and 2017, inventories of $2,074 million and $2,076 million, respectively, were expected to be recovered for a time period longer than twelve months. The aforementioned amount of inventories is related to property development owned by LED. Land held under development and construction in progress on December 31, 2016 and 2017 was developed by LED for Qingshan Sec., Dayuan Dist., Taoyuan City project. |
Prepayments
Prepayments | 12 Months Ended |
Dec. 31, 2017 | |
Prepayments And Accrued Income [Abstract] | |
Prepayments | 13. PREPAYMENTS December 31 2016 2017 NT$ NT$ (In Millions) Prepaid rents $ 2,934 $ 2,687 Others 3,285 3,074 $ 6,219 $ 5,761 Current Prepaid rents $ 899 $ 812 Others 2,079 1,376 $ 2,978 $ 2,188 Noncurrent Prepaid rents $ 2,035 $ 1,875 Others 1,206 1,698 $ 3,241 $ 3,573 |
Other Current Monetary Assets
Other Current Monetary Assets | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Other Current Monetary Assets [Abstract] | |
Other Current Monetary Assets | 14. OTHER CURRENT MONETARY ASSETS December 31 2016 2017 NT$ NT$ (In Millions) Time deposits and negotiable certificates of deposit with maturities of more than three months $ 3,568 $ 4,054 Others 1,253 1,254 $ 4,821 $ 5,308 The annual yield rates of time deposits and negotiable certificates of deposit with maturities of more than three months at the balance sheet dates were as follows: December 31 2016 2017 Time deposits and negotiable certificates of deposit with maturities of more than three months 0.11%-1.95% 0.06%-4.15% |
Subsidiaries
Subsidiaries | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Significant Investments In Subsidiaries [Abstract] | |
Subsidiaries | 15. SUBSIDIARIES a. Information on significant noncontrolling interest subsidiary 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 2016 2017 SENAO Taiwan 71% 71% CHPT Taiwan 59% 62% Profit Allocated to Noncontrolling Interests Accumulated Noncontrolling Interests Year Ended December 31 December 31 2015 2016 2017 2016 2017 NT$ NT$ NT$ NT$ NT$ (In Millions) SENAO $ 551 $ 690 $ 592 $ 4,069 $ 4,092 CHPT $ 212 $ 341 $ 431 1,575 3,513 Individually immaterial subsidiaries with noncontrolling interests 628 869 $ 6,272 $ 8,474 Summarized financial information in respect of SENAO and its subsidiaries that has material noncontrolling interests is set out below. The summarized financial information below represents amounts before intercompany eliminations. December 31 2016 2017 NT$ NT$ (In Millions) Current assets $ 7,762 $ 7,584 Noncurrent assets $ 2,535 $ 2,531 Current liabilities $ 4,466 $ 4,278 Noncurrent liabilities $ 155 $ 160 Equity attributable to the parent $ 1,607 $ 1,585 Equity attributable to noncontrolling interests $ 4,069 $ 4,092 Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Revenue and income $ 35,944 $ 34,453 $ 36,038 Costs and expenses 35,171 33,476 35,200 Profit for the year $ 773 $ 977 $ 838 Profit attributable to the parent $ 222 $ 287 $ 246 Profit attributable to noncontrolling interests 551 690 592 Profit for the year $ 773 $ 977 $ 838 Other comprehensive income (loss) attributable to the parent $ (1 ) $ (21 ) $ 3 Other comprehensive loss attributable to noncontrolling interests (2 ) (53 ) (17 ) Other comprehensive loss for the year $ (3 ) $ (74 ) $ (14 ) Total comprehensive income attributable to the parent $ 222 $ 266 $ 249 Total comprehensive income attributable to noncontrolling interests 548 637 575 Total comprehensive income for the year $ 770 $ 903 $ 824 Dividends paid to noncontrolling interests $ 274 $ 526 $ 703 Net cash flow from operating activities $ 1,739 $ 531 $ 1,081 Net cash flow from investing activities 54 130 (57 ) Net cash flow from financing activities (1,530 ) (677 ) (897 ) Effect of exchange rate changes on cash and cash equivalents 11 (7 ) (2 ) Net cash inflow (outflow) $ 274 $ (23 ) $ 125 Summarized financial information in respect of CHPT and its subsidiaries that has material noncontrolling interests is set out below. The summarized financial information below represents amounts before intercompany eliminations. December 31 2016 2017 NT$ NT$ (In Millions) Current assets $ 2,116 $ 4,496 Noncurrent assets $ 1,872 $ 2,167 Current liabilities $ 1,323 $ 965 Noncurrent liabilities $ 1 $ 1 Equity attributable to CHI $ 1,089 $ 2,184 Equity attributable to noncontrolling interests $ 1,575 $ 3,513 Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Revenue and income $ 1,735 $ 2,607 $ 3,127 Costs and expenses 1,341 2,020 2,402 Profit for the year $ 394 $ 587 $ 725 Profit attributable to CHI $ 182 $ 246 $ 294 Profit attributable to noncontrolling interests 212 341 431 Profit for the year $ 394 $ 587 $ 725 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 $ 182 $ 246 $ 293 Total comprehensive income attributable to noncontrolling interests 212 341 429 Total comprehensive income for the year $ 394 $ 587 $ 722 Dividends paid to noncontrolling interests $ 35 $ 109 $ 146 Net cash flow from operating activities $ 532 $ 671 $ 1,052 Net cash flow from investing activities (200 ) (904 ) (639 ) Net cash flow from financing activities (112 ) 841 2,306 Effect of exchange rate changes on cash and cash equivalents 3 (2 ) (4 ) Net cash inflow $ 223 $ 606 $ 2,715 b. Equity transactions with noncontrolling interests CHI disposed of some shares of CHPT in January 2015 and March 2016, and did not participate in the capital increase of CHPT in March 2016 and September 2017. Therefore, the Company’s ownership interest in CHPT decreased to 38.30%. See Note 34(d) for details. SENAO purchased its treasury stock in June and July 2015, and the Company’s ownership interest of SENAO increased from 28.18% to 29.31%. SENAO participated in share subscription of Youth in December 2015 at a percentage different from its original ownership interest. Therefore, the ownership interest of Youth increased from 70% to 89.48%. SENAO transferred its treasury stock to employees in May and November 2017 and the Company’s ownership interest in SENAO decreased to 28.93%. See Note 34(b) for details. 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%. The above transactions were accounted for as equity transactions since the Company did not cease to have control over these subsidiaries. The detailed information of the equity transactions for the years ended December 31, 2015, 2016 and 2017 was as follows: Year Ended December 31 2015 2016 2017 CHI Disposed Some Shares of CHPT SENAO Purchased Its Treasury Stock SENAO Participated in Youth's Share Subscription 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$ NT$ NT$ NT$ NT$ (In Millions) Cash consideration received from (paid to) Noncontrolling interests $ 45 $ (492 ) $ — $ 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 (18 ) 416 (0.4 ) (25 ) (786 ) (1,750 ) (137 ) (29 ) Differences arising from equity transactions $ 27 $ (76 ) $ (0.4 ) $ 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 $ 27 $ — $ — $ 58 $ — $ — $ — $ 77 Additional paid-in capital - arising from changes in equities of subsidiaries $ — $ (15 ) $ (0.4 ) $ — $ 389 $ 802 $ 27 $ — Unappropriated earnings $ — $ (61 ) $ — $ — $ — $ — $ — $ — c. Business combinations 1) Subsidiaries acquired Principal Activity Date of Acquisition Proportion of Voting Equity Interests Acquired (%) Consideration Transferred NT$ (In Millions) Youth Co., Ltd. and its subsidiaries Sale and maintenance of information and communication technologies products September 2, 2015 70 $ 135 Youth and its subsidiaries were acquired in cash in order to continue the expansion of SENAO’s activities in selling telecommunications products. 2) Assets acquired and liabilities assumed at the date of acquisition Youth and Its Subsidiaries NT$ (In Millions) Current assets Cash and cash equivalents $ 21 Accounts and other receivables 10 Inventories 30 Prepayments 6 Other current assets 6 Noncurrent assets Property, plant and equipment 36 Intangible assets 259 Refundable deposits 22 Deferred income tax assets 4 Other noncurrent assets 32 Current liabilities Short-term loans (54 ) Trade notes payable (9 ) Accounts and other payables (75 ) Other current liabilities (80 ) Noncurrent liabilities Long-term loans (40 ) Deferred income tax liabilities (44 ) Other noncurrent liabilities (10 ) $ 114 3) Goodwill arising on acquisition Youth and Its Subsidiaries NT$ (In Millions) Consideration transferred $ 135 Add: Noncontrolling interest (30% of the recognized amounts of Youth and its subsidiaries’ identifiable net assets) 34 Less: Fair value of identifiable net assets acquired (114 ) Goodwill arising on acquisition $ 55 Goodwill that arose in the acquisition of Youth and its subsidiaries mainly included the amount in relation to the benefit of expected synergies from integrating the businesses of Youth and its subsidiaries into the Company that operate sales and maintenance of Apple’s products for many years. These benefits were not recognized separately from goodwill because they did not meet the recognition criteria for identifiable intangible assets. Goodwill arising from business combinations is not deductible for tax purposes. SENAO evaluated the goodwill that arose in the acquisition of Youth and its subsidiaries at the end of each year. SENAO determined the smallest identifiable group of assets that generates cash inflows as single cash generating units by business type, and evaluated the recoverable amount of those cash generating units by their value in use. The management of SENAO estimated the cash flow projections based on the financial budgets for the following five years. Discount rates were 16.3%, 14.6% and 14.8% as of December 31 2015, 2016 and 2017, respectively and were used to calculate the recoverable amount of related cash generating units by discounting aforementioned cash flows.SENAO concluded that there was no impairment loss recognized for the years ended December 31, 2015 and 2016. Furthermore, SENAO concluded the recoverable amount of the goodwill was lower than the carrying value and recognized impairment loss of $9 million for the year ended December 31, 2017. The impairment loss was included in other income and expenses in the statements of comprehensive income. 4) Net cash outflow on acquisition of subsidiaries Youth and Its Subsidiaries NT$ (In Millions) Consideration paid in cash $ 135 Less: Cash and cash equivalents acquired (21 ) $ 114 5) Impact of acquisitions on the results of the Company’s financial performance The results of the acquired subsidiaries’ financial performance from the acquisition date to December 31, 2015, were as follows: Youth and ItsSubsidiaries NT$ (In Millions) Revenue $ 188 Net loss $ 18 Had these business combinations been in effect at the beginning of the annual reporting period, the Company’s pro-forma revenue and net income would have been $232,187 million and $42,774 million, respectively, for the year ended December 31, 2015. This pro-forma information is for illustrative purposes only and is not necessarily an indication of revenue and results of operations of the Company that actually would have been achieved had the acquisition been completed on January 1, 2015, nor is it intended to be a projection of future results. In determining the pro-forma revenue and net income of the Company had Youth and its subsidiaries been acquired at the beginning of 2015, management calculated depreciation of property, plant and equipment and amortization of intangible assets acquired on the basis of the fair values arising in the initial accounting for the business combination rather than the carrying amounts recognized in the pre-acquisition financial statements. |
Investments Accounted for Using
Investments Accounted for Using Equity Method | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Significant Investments In Associates And Joint Ventures [Abstract] | |
Investments Accounted for Using Equity Method | 16. INVESTMENTS ACCOUNTED FOR USING EQUITY METHOD December 31 2016 2017 NT$ NT$ (In Millions) Investments in associates $ 2,383 $ 2,326 Investments in joint ventures 3 — $ 2,386 $ 2,326 a. Investments in associates Investments in associates were as follows: Carrying Amount December 31 2016 2017 NT$ NT$ (In Millions) Listed Senao Networks, Inc. (“SNI”) $ 680 $ 704 Non-listed ST-2 Satellite Ventures Pte. Ltd. (“STS”) 467 472 International Integrated System, Inc. (“IISI”) 307 292 Viettel-CHT Co., Ltd. (“Viettel-CHT”) 275 256 Skysoft Co., Ltd. (“SKYSOFT”) 145 140 Taiwan International Standard Electronics Co., Ltd. (“TISE”) 142 132 KingwayTek Technology Co., Ltd. (“KWT”) 84 90 So-net Entertainment Taiwan Limited (“So-net”) 111 104 Taiwan International Ports Logistics Corporation (“TIPL”) 57 50 Click Force Co., Ltd. (“CF”) 37 38 Dian Zuan Integrating Marketing Co., Ltd. (“DZIM”) 22 12 HopeTech Technologies Limited (“HopeTech”) 24 23 Alliance Digital Tech Co., Ltd. (“ADT”) 32 13 MeWorks LIMITED (HK) (“MeWorks”) — — $ 2,383 $ 2,326 The percentages of ownership and voting rights in associates held by the Company as of balance sheet dates were as follows: % of Ownership and Voting Rights December 31 2016 2017 Senao Networks, Inc. (“SNI”) 34 34 ST-2 Satellite Ventures Pte., Ltd. (“STS”) 38 38 International Integrated System, Inc. (“IISI”) 32 32 Viettel-CHT Co., Ltd. (“Viettel-CHT”) 30 30 Skysoft Co., Ltd. (“SKYSOFT”) 30 30 Taiwan International Standard Electronics Co., Ltd. (“TISE”) 40 40 KingwayTek Technology Co., Ltd. (“KWT”) 26 26 So-net Entertainment Taiwan Limited (“So-net”) 30 30 Taiwan International Ports Logistics Corporation (“TIPL”) 27 27 Click Force Co., Ltd. (“CF”) 49 49 Dian Zuan Integrating Marketing Co., Ltd. (“DZIM”) 26 22 HopeTech Technologies Limited (“HopeTech”) 45 45 Alliance Digital Tech Co., Ltd. (“ADT”) 14 14 MeWorks LIMITED (HK) (“MeWorks”) 20 20 None of the above associates is considered individually material to the Company. Summarized financial information of associates that are not individually material was as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) The Company’s share of profit $ 926 $ 557 $ 420 The Company’s share of other comprehensive loss (19 ) (47 ) (4 ) The Company’s share of total comprehensive income $ 907 $ 510 $ 416 The Level 1 fair values based on the closing market prices of SNI as of the balance sheet dates were as follows: December 31 2016 2017 NT$ NT$ (In Millions) SNI $ 2,537 $ 2,130 Chunghwa sold its partial ownership interest in KWT in January 2015. The gain on disposal of KWT was $7 million. CHYP participated in the capital increase of CF by investing $6 million in April 2015. CHYP holds 49% ownership interest of CF. CF engages mainly in advertisement services. Sertec completed its liquidation in June 2015. CHI recognized the gain on disposal of Sertec of $1 million and received the proceeds from disposal in July 2015. CHI disposed all ownership interest in Panda Monium Company Ltd. in September 2015. As the operation of MeWorks ceased, the Company concluded that this investment was fully impaired and recognized an impairment loss of $8 million for the year ended December 31, 2015. Chunghwa participated in the capital increase of ADT by investing $30 million in December 2016. The Company owns 14% equity shares of ADT. As the Company remains the seat in the Board of Directors of ADT, and considers the relative size of ownership interest and the dispersion of shares owned by the other stockholders, the Company remains significant influence over ADT. ADT engages mainly in the development of mobile payments and information processing service. The Company did not participate in the capital increase of DZIM in April 2017 and the ownership interest of DZIM decreased from 26% to 22%. DZIM engages mainly in information technology service and general advertisement service. The Company’s share of profit and other comprehensive loss of associates was recognized based on the audited financial statements. b. Investments in joint ventures Investments in joint ventures were as follows: % of Ownership and Carrying Amount Voting Rights December 31 December 31 2016 2017 2016 2017 NT$ NT$ (In Millions) Non-listed Chunghwa Benefit One Co., Ltd. (“CBO”) $ 3 $ — 50 — Huada Digital Corporation (“HDD”) — — 50 — $ 3 $ — In March 2016, the stockholders of HDD approved that HDD should start its dissolution from March 31, 2016. Chunghwa received the proceeds from the liquidation in September 2016 and recognized the disposal loss of $0.4 million. HDD completed its liquidation in March 2017. In December 2016, the stockholders of CBO approved that CBO should start its dissolution from December 31, 2016. CBO completed its liquidation in December 2017 and recognized the disposal loss of $0.2 million. None of the above joint ventures is considered individually material to the Company. Summarized financial information of joint ventures that were not material to the Company was as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) The Company’s share of loss $ (29 ) $ (42 ) $ (1 ) The Company’s share of other comprehensive income — — — The Company’s share of total comprehensive loss $ (29 ) $ (42 ) $ (1 ) The Company’s share of loss of joint ventures was recorded based on the audited financial statements. |
Property, Plant and Equipment
Property, Plant and Equipment | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Property Plant And Equipment [Abstract] | |
Property, Plant and Equipment | 17. PROPERTY, PLANT AND EQUIPMENT December 31 2016 2017 NT$ NT$ (In Millions) Carrying amount Land $ 103,872 $ 104,079 Land improvements 333 302 Buildings 42,147 45,895 Computer equipment 2,713 2,374 Telecommunications equipment 119,195 114,900 Transportation equipment 629 321 Miscellaneous equipment 2,140 2,310 Construction in progress and equipment to be accepted 20,141 18,527 $ 291,170 $ 288,708 Land Land Improvements Buildings Computer Equipment Telecommuni- cations Equipment Transportation Equipment Miscellaneous Equipment Construction in Progress and Equipment to be Accepted Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Cost Balance on January 1, 2015 $ 102,774 $ 1,558 $ 67,600 $ 15,318 $ 695,076 $ 3,824 $ 8,643 $ 20,930 $ 915,723 Additions — — 59 37 159 — 203 23,993 24,451 Disposal — — (11 ) (1,073 ) (13,047 ) (69 ) (511 ) — (14,711 ) Effect of foreign exchange differences — — — — 69 — — — 69 Acquisitions through business combinations 19 — 7 — — — 39 — 65 Others (46 ) 17 135 714 23,115 60 363 (24,521 ) (163 ) Balance on December 31, 2015 $ 102,747 $ 1,575 $ 67,790 $ 14,996 $ 705,372 $ 3,815 $ 8,737 $ 20,402 $ 925,434 Accumulated depreciation and impairment Balance on January 1, 2015 $ — $ (1,145 ) $ (23,202 ) $ (11,308 ) $ (568,767 ) $ (2,208 ) $ (6,443 ) $ — $ (613,073 ) Depreciation expenses — (53 ) (1,269 ) (1,467 ) (26,291 ) (599 ) (671 ) — (30,350 ) Disposal — — 10 1,061 13,033 69 425 — 14,598 Impairment losses — — — — (138 ) — — — (138 ) Effect of foreign exchange differences — — — — (14 ) — — — (14 ) Acquisitions through business combinations — — (1 ) — — — (28 ) — (29 ) Others — (5 ) 41 (1 ) (28 ) (12 ) (24 ) — (29 ) Balance on December 31, 2015 $ — $ (1,203 ) $ (24,421 ) $ (11,715 ) $ (582,205 ) $ (2,750 ) $ (6,741 ) $ — $ (629,035 ) Cost Balance on January 1, 2016 $ 102,747 $ 1,575 $ 67,790 $ 14,996 $ 705,372 $ 3,815 $ 8,737 $ 20,402 $ 925,434 Additions 791 — 36 42 171 1 255 23,295 24,591 Disposal (2 ) (6 ) (35 ) (1,546 ) (11,542 ) (54 ) (625 ) — (13,810 ) Effect of foreign exchange differences — — — (3 ) (35 ) — (4 ) — (42 ) Others 336 12 (53 ) 806 21,726 104 580 (23,556 ) (45 ) Balance on December 31, 2016 $ 103,872 $ 1,581 $ 67,738 $ 14,295 $ 715,692 $ 3,866 $ 8,943 $ 20,141 $ 936,128 (Continued) Land Land Improvements Buildings Computer Equipment Telecommuni- cations Equipment Transportation Equipment Miscellaneous Equipment Construction in Progress and Equipment to be Accepted Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Accumulated depreciation and impairment Balance on January 1, 2016 $ — $ (1,203 ) $ (24,421 ) $ (11,715 ) $ (582,205 ) $ (2,750 ) $ (6,741 ) $ — $ (629,035 ) Depreciation expenses — (51 ) (1,269 ) (1,332 ) (25,280 ) (529 ) (626 ) — (29,087 ) Disposal — 6 34 1,529 11,512 54 583 — 13,718 Impairment losses — — — — (596 ) — — — (596 ) Effect of foreign exchange differences — — — 1 7 — 4 — 12 Others — — 65 (65 ) 65 (12 ) (23 ) — 30 Balance on December 31, 2016 $ — $ (1,248 ) $ (25,591 ) $ (11,582 ) $ (596,497 ) $ (3,237 ) $ (6,803 ) $ — $ (644,958 ) Cost Balance on January 1, 2017 $ 103,872 $ 1,581 $ 67,738 $ 14,295 $ 715,692 $ 3,866 $ 8,943 $ 20,141 $ 936,128 Additions — — 30 78 193 1 193 25,574 26,069 Disposal (158 ) (5 ) (108 ) (974 ) (13,739 ) (62 ) (402 ) — (15,448 ) Effect of foreign exchange differences — — — (1 ) (172 ) — (3 ) — (176 ) Others 365 19 5,034 764 20,080 29 784 (27,188 ) (113 ) Balance on December 31, 2017 $ 104,079 $ 1,595 $ 72,694 $ 14,162 $ 722,054 $ 3,834 $ 9,515 $ 18,527 $ 946,460 Accumulated depreciation and impairment Balance on January 1, 2017 $ — $ (1,248 ) $ (25,591 ) $ (11,582 ) $ (596,497 ) $ (3,237 ) $ (6,803 ) $ — $ (644,958 ) Depreciation expenses — (50 ) (1,402 ) (1,192 ) (24,492 ) (330 ) (677 ) — (28,143 ) Disposal — 4 47 967 13,712 63 389 — 15,182 Effect of foreign exchange differences — — — — 45 — 2 — 47 Others — 1 147 19 78 (9 ) (116 ) — 120 Balance on December 31, 2017 $ — $ (1,293 ) $ (26,799 ) $ (11,788 ) $ (607,154 ) $ (3,513 ) $ (7,205 ) $ — $ (657,752 ) (Concluded) Due to technology upgrade, some telecommunications equipment became obsolete in 2015. The Company determined that some telecommunications equipment was impaired in 2016 due to the expiration of 2G license in June 2017 which will lead to the termination of the related service. The Company evaluated and concluded the recoverable amount determined on the basis of value in use of aforementioned telecommunications equipment was lower than the carrying value, and recognized impairment losses of $138 million and $596 million for the years ended December 31, 2015 and 2016, respectively. In addition, the Company evaluated and concluded the recoverable amount of partial computer and miscellaneous equipment was nil and recognized impairment losses of $0.4 million for the year ended December 31, 2016. The impairment loss was included in other income and expenses in the statements of comprehensive income. There was no indication that property, plant and equipment was impaired so the Company did not recognize any impairment loss for the year ended December 31, 2017. Depreciation expense is computed using the straight-line method over the following estimated service lives: Land improvements 8-30 years Buildings Main buildings 35-60 years Other building facilities 3-20 years Computer equipment 2-8 years Telecommunications equipment Telecommunication circuits 2-30 years Telecommunication machinery and antennas equipment 2-30 years Transportation equipment 3-10 years Miscellaneous equipment Leasehold improvements 1-6 years Mechanical and air conditioner equipment 3-16 years Others 1-10 years |
Investment Properties
Investment Properties | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Investment Property [Abstract] | |
Investment Properties | 18. INVESTMENT PROPERTIES December 31 2016 2017 NT$ NT$ (In Millions) Carrying amount Investment properties $ 8,115 $ 8,048 Investment Properties NT$ (In Millions) Cost Balance on January 1, 2015 $ 8,883 Disposal — Reclassification 175 Balance on December 31, 2015 $ 9,058 Accumulated depreciation and impairment Balance on January 1, 2015 $ (1,262 ) Depreciation expense (18 ) Disposal — Reclassification (18 ) Reversal of impairment loss 142 Balance on December 31, 2015 $ (1,156 ) Cost Balance on January 1, 2016 $ 9,058 Additions — Reclassification 137 Balance on December 31, 2016 $ 9,195 Accumulated depreciation and impairment Balance on January 1, 2016 $ (1,156 ) Depreciation expense (19 ) Reclassification (53 ) Reversal of impairment loss 148 Balance on December 31, 2016 $ (1,080 ) Cost Balance on January 1, 2017 $ 9,195 Reclassification (60 ) Balance on December 31, 2017 $ 9,135 Accumulated depreciation and impairment Balance on January 1, 2017 $ (1,080 ) Depreciation expense (21 ) Reclassification 3 Reversal of impairment loss 11 Balance on December 31, 2017 $ (1,087 ) Depreciation expense is computed using the straight-line method over the following estimated service lives: Land improvements 8-30 years Buildings Main buildings 35-60 years Other building facilities 4-10 years After the evaluation of land and buildings, the Company concluded the recoverable amount which represented the fair value less costs to sell of some land and buildings was higher than the carrying amount in 2015, 2016 and 2017. Therefore, the Company recognized reversals of impairment loss of $142 million, $148 million and $11 million for the years ended December 31, 2015, 2016 and 2017, respectively, and the amounts were recognized only to the extent of impairment losses that had been recognized in prior years. The reversal of impairment loss was included in other income and expenses in the statements of comprehensive income. The fair values of the Company’s investment properties as of December 31, 2016 and 2017 were determined by Level 3 fair value measurements inputs based on the appraisal reports conducted by independent appraisers. Those appraisal reports are based on the comparison approach, income approach or cost approach. Key assumptions and the fair values were as follows: December 31 2016 2017 NT$ NT$ (In Millions) Fair value $ 17,778 $ 17,728 Overall capital interest rate 1.46%-2.20% 1.46%-2.20% Profit margin ratio 10%-20% 12%-20% Discount rate 1.04 % 1.04% Capitalization rate 0.43%-1.78% 0.47%-1.69% All of the Company’s investment properties are held under freehold interest. |
Intangible Assets
Intangible Assets | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Intangible Assets [Abstract] | |
Intangible Assets | 19. INTANGIBLE ASSETS December 31 2016 2017 NT$ NT$ (In Millions) Carrying amount 3G and 4G concession $ 45,796 $ 53,469 Computer software 995 880 Goodwill 218 209 Others 344 325 $ 47,353 $ 54,883 3G and 4G Concession Computer Software Goodwill Others Total NT$ NT$ NT$ NT$ NT$ (In Millions) Cost Balance on January 1, 2015 $ 49,254 $ 3,192 $ 181 $ 151 $ 52,778 Additions-acquired separately 9,955 424 — 1 10,380 Disposal — (375 ) — (2 ) (377 ) Effect of foreign exchange difference — — — — — Acquisitions through business combinations — — 55 259 314 Others — 8 — — 8 Balance on December 31, 2015 $ 59,209 $ 3,249 $ 236 $ 409 $ 63,103 Accumulated amortization and impairment Balance on January 1, 2015 $ (8,104 ) $ (1,793 ) $ (18 ) $ (38 ) $ (9,953 ) Amortization expenses (2,504 ) (565 ) — (11 ) (3,080 ) Disposal — 375 — 2 377 Effect of foreign exchange difference — — — — — Others — — — — — Balance on December 31, 2015 $ (10,608 ) $ (1,983 ) $ (18 ) $ (47 ) $ (12,656 ) Cost Balance on January 1, 2016 $ 59,209 $ 3,249 $ 236 $ 409 $ 63,103 Additions-acquired separately — 277 — 5 282 Disposal — (121 ) — — (121 ) Effect of foreign exchange difference — — — — — Others — 3 — — 3 Balance on December 31, 2016 $ 59,209 $ 3,408 $ 236 $ 414 $ 63,267 Accumulated amortization and impairment Balance on January 1, 2016 $ (10,608 ) $ (1,983 ) $ (18 ) $ (47 ) $ (12,656 ) Amortization expenses (2,805 ) (551 ) — (23 ) (3,379 ) Disposal — 121 — — 121 Impairment losses — — — — — Effect of foreign exchange difference — — — — — Balance on December 31, 2016 $ (13,413 ) $ (2,413 ) $ (18 ) $ (70 ) $ (15,914 ) Cost Balance on January 1, 2017 $ 59,209 $ 3,408 $ 236 $ 414 $ 63,267 Additions-acquired separately 10,935 366 — 4 11,305 Disposal — (462 ) — — (462 ) Effect of foreign exchange difference — — — — — Balance on December 31, 2017 $ 70,144 $ 3,312 $ 236 $ 418 $ 74,110 Accumulated amortization and impairment Balance on January 1, 2017 $ (13,413 ) $ (2,413 ) $ (18 ) $ (70 ) $ (15,914 ) Amortization expenses (3,262 ) (481 ) — (23 ) (3,766 ) Disposal — 462 — — 462 Impairment losses — — (9 ) — (9 ) Effect of foreign exchange difference — — — — — Balance on December 31, 2017 $ (16,675 ) $ (2,432 ) $ (27 ) $ (93 ) $ (19,227 ) For long-term business development, Chunghwa participated in mobile broadband license (4G license) in 2.5 and 2.6 GHz bands bidding process announced by NCC and obtained certain spectrums. Chunghwa paid the 4G concession fees amounting to $9,955 million in December 2015. For long-term business development, Chunghwa submitted an application to NCC for 4G mobile broadband license in 1.8 and 2.1 GHz frequency bands and obtained certain spectrums. Chunghwa paid the 4G concession fee amounting to $10,935 million in November 2017. The concessions are granted and issued by the NCC. The concession fees are amortized using the straight-line method from the date operations commence through the date the license expires. The carrying amount of 3G concession fee will be fully amortized by December 2018, and 4G concession fees will be fully amortized by December 2030 and December 2033. The computer software is amortized using the straight-line method over the estimated useful lives of 1 to 10 years. Other intangible assets are amortized using the straight-line method over the estimated useful lives of 1 to 20 years. Goodwill is not amortized. |
Other Assets
Other Assets | 12 Months Ended |
Dec. 31, 2017 | |
Miscellaneous Assets [Abstract] | |
Other Assets | 20. OTHER ASSETS December 31 2016 2017 NT$ NT$ (In Millions) Spare parts $ 1,776 $ 2,059 Refundable deposits 2,083 1,860 Other financial assets 1,000 1,000 Others 2,288 2,800 $ 7,147 $ 7,719 Current Spare parts $ 1,776 $ 2,059 Others 346 124 $ 2,122 $ 2,183 Noncurrent Refundable deposits $ 2,083 $ 1,860 Other financial assets 1,000 1,000 Others 1,942 2,676 $ 5,025 $ 5,536 Other financial assets - noncurrent was Piping Fund. As part of the government’s effort to upgrade the existing telecommunications infrastructure, Chunghwa and other public utility companies were required by the ROC government to contribute to a Piping Fund administered by the Taipei City Government. This fund was used to finance various telecommunications infrastructure projects. Net assets of this fund will be returned proportionately after the project is completed. |
Hedging Derivative Financial In
Hedging Derivative Financial Instruments | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Detailed Information About Hedging Instruments [Abstract] | |
Hedging Derivative Financial Instruments | 21. HEDGING DERIVATIVE December 31 2016 2017 NT$ NT$ (In Millions) Hedging derivative financial liabilities Cash flow hedge - forward exchange contracts $ 1 $ 1 Chunghwa’s hedge strategy is to enter forward exchange contracts - buy to avoid its foreign currency exposure to certain foreign currency denominated equipment payments in the following six months. In addition, Chunghwa’s management considers the market condition to determine the hedge ratio, and enters into forward exchange contracts with the banks to avoid the foreign currency risk. Chunghwa signed equipment purchase contracts with suppliers, and entered into forward exchange contracts to avoid foreign currency risk exposure to Euro-denominated purchase commitments. Those forward exchange contracts were designated as cash flow hedges. For the years ended December 31, 2015, 2016 and 2017, gain (loss) arising from changes in fair value of the hedged items recognized in other comprehensive income was gain of $1 million, loss of $1 million and loss of $1 million, respectively. Upon the completion of the purchase transaction, the amount deferred and recognized in equity initially will be reclassified into equipment as its carrying value. As of December 31, 2015, 2016 and 2017, Chunghwa expected part of the equipment purchase transactions will not occur and reclassified the related loss of $1 million, gain of $1 million and gain of $2 million, respectively, arising from the forward exchange contracts of the aforementioned transactions from equity to profit or loss. The outstanding forward exchange contracts at the balance sheet dates were as follows: Currency Maturity Period Contract Amount (Millions) December 31, 2016 Forward exchange contracts - buy EUR/NT$ 2017.03 EUR3/NT$102 December 31, 2017 Forward exchange contracts - buy EUR/NT$ 2018.03-06 EUR4/NT$142 Loss (gain) arising from the hedging derivative financial instruments that have been reclassified from equity to initial cost of the property, plant and equipment were as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Construction in progress and equipment to be accepted $ (18 ) $ (15 ) $ (2 ) |
Short-Term Loans
Short-Term Loans | 12 Months Ended |
Dec. 31, 2017 | |
Short-term loans [Member] | |
Disclosure of detailed information about borrowings [Line Items] | |
Loans | 22. SHORT-TERM LOANS December 31 2016 2017 NT$ NT$ (In Millions) Secured loans (Note 41) $ 20 $ — Unsecured loans 118 70 $ 138 $ 70 The annual interest rates of loans were as follows: December 31 2016 2017 Secured loans 1.98% — Unsecured loans 1.95%-2.25% 2.15%-2.19% |
Long-Term Loans
Long-Term Loans | 12 Months Ended |
Dec. 31, 2017 | |
Long-term loans [Member] | |
Disclosure of detailed information about borrowings [Line Items] | |
Loans | 23. LONG-TERM LOANS December 31 2016 2017 NT$ NT$ (In Millions) Secured loans (Note 41) $ 1,600 $ 1,600 The annual interest rates of loans were as follows: December 31 2016 2017 Secured loans 0.91% 0.91% LED obtained a secured loan from Chang Hwa Bank in September 2010. Interest is paid monthly. $300 million and $1,350 million were originally due in December 2014 and September 2015, respectively. In October 2014, the bank borrowing mentioned above was extended to September 2018 for one time repayment. LED made an early repayment of $ 50 million in April 2015. LED entered into a contract with Chang Hwa Bank to renew the contract upon the maturity of the aforementioned contract in December 2017 and the due date of the renew contract is extended to September 2021. LED obtained another secured loan from Chang Hwa Bank in December 2012 in the amount of $400 million which is due in December 2017; LED made early repayments of $350 million and $50 million in 2013 and January 2015, respectively. CHPT entered into a secured loan contract of $348 million with Bank of Taiwan in April 2014, interest is paid monthly, amortization of principal began in May 2016, and the loan is due in April 2029. CHPT made early repayments of $148 million, $50 million and $150 million from September to December 2014, in November 2015 and from March to April 2016, respectively. |
Trade Notes and Accounts Payabl
Trade Notes and Accounts Payable | 12 Months Ended |
Dec. 31, 2017 | |
Trade And Other Current Payables [Abstract] | |
Trade Notes and Accounts Payable | 24. TRADE NOTES AND ACCOUNTS PAYABLE December 31 2016 2017 NT$ NT$ (In Millions) Trade notes and accounts payable $ 18,810 $ 19,396 Trade notes and accounts payable were attributable to operating activities and the trading conditions were agreed separately. |
Other Payables
Other Payables | 12 Months Ended |
Dec. 31, 2017 | |
Trade And Other Current Payables [Abstract] | |
Other Payables | 25. OTHER PAYABLES December 31 2016 2017 NT$ NT$ (In Millions) Accrued salary and compensation $ 9,770 $ 9,748 Payables to contractors 2,396 2,058 Accrued compensation to employees and remuneration to directors and supervisors 2,015 1,949 Payables to equipment suppliers 1,623 1,690 Accrued franchise fees 1,326 1,248 Amounts collected for others 1,407 1,203 Accrued maintenance costs 1,062 1,081 Others 6,819 6,024 $ 26,418 $ 25,001 |
Provisions
Provisions | 12 Months Ended |
Dec. 31, 2017 | |
Provisions [Abstract] | |
Provisions | 26. PROVISIONS December 31 2016 2017 NT$ NT$ (In Millions) Warranties $ 111 $ 132 Trade-in right 31 87 Employee benefits 38 43 Others 5 5 $ 185 $ 267 Current $ 119 $ 189 Noncurrent 66 78 $ 185 $ 267 Warranties Trade-in rights Employee Benefits Others Total NT$ NT$ NT$ NT$ NT$ (In Millions) Balance on January 1, 2015 $ 212 $ — $ 55 $ 5 $ 272 Additional provisions recognized 100 — 12 — 112 Used / forfeited during the year (99 ) — (37 ) — (136 ) Balance on December 31, 2015 $ 213 $ — $ 30 $ 5 $ 248 Balance on January 1, 2016 $ 213 $ — $ 30 $ 5 $ 248 Additional provisions recognized 81 31 9 — 121 Used / forfeited during the year (183 ) — (1 ) — (184 ) Balance on December 31, 2016 $ 111 $ 31 $ 38 $ 5 $ 185 Balance on January 1, 2017 $ 111 $ 31 $ 38 $ 5 $ 185 Additional provisions recognized 79 69 7 — 155 Used / forfeited during the year (58 ) (13 ) (2 ) — (73 ) Balance on December 31, 2017 $ 132 $ 87 $ 43 $ 5 $ 267 a. The provision for warranties claims represents the present value of the management’s best estimate of the future outflow of economic benefits that will be required under the Company’s obligation for warranties in sales agreements. The estimate has been made based on the historical warranty experience. b. The provision for employee benefits represents vested long-term service compensation accrued. c . The provision for trade-in right is based on the management’s judgments to estimate the trade-in right of products exercised by customers in the future. The provision is recognized as a reduction of revenue in the period in which the goods are sold. |
Advance Receipt
Advance Receipt | 12 Months Ended |
Dec. 31, 2017 | |
Miscellaneous Current Liabilities [Abstract] | |
Advance Receipt | 27. ADVANCE RECEIPTS Advance receipts are mainly from advance telecommunication charges. In accordance with NCC’s regulation named “Mandatory and Prohibitory Provisions To Be Included In Standard Contracts for Telecommunication Goods (Services) Coupons”, the Company entered into a contract with Bank of Taiwan to provide a performance guarantee for advance receipts from selling prepaid cards amounting to $797 million as of December 31, 2017. |
Retirement Benefit Plans
Retirement Benefit Plans | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Defined Benefit Plans [Abstract] | |
Retirement Benefit Plans | 28. RETIREMENT BENEFIT PLANS a. Defined contribution plans The pension plan under the Labor Pension Act of ROC (the “LPA”) is considered as a defined contribution plan. Based on the LPA, Chunghwa and its domestic subsidiaries make monthly contributions to employees’ individual pension accounts at 6% of monthly salaries and wages. Its foreign subsidiaries would make monthly contributions based on the local pension requirements. b. Defined benefit plans Chunghwa completed its privatization plans on August 12, 2005. Chunghwa is required to pay all accrued pension obligations including service clearance payment, lump sum payment under civil service plan, additional separation payments, etc. upon the completion of the privatization in accordance with the Statute Governing Privatization of Stated-owned Enterprises. After paying all pension obligations for privatization, the plan assets of Chunghwa should be transferred to the Fund for Privatization of Government-owned Enterprises (the “Privatization Fund”) under the Executive Yuan. On August 7, 2006, Chunghwa transferred the remaining balance of fund to the Privatization Fund. However, according to the instructions of MOTC, Chunghwa was requested to administer the distributions to employees for pension obligations including service clearance payment, lump sum payment under civil service plan, additional separation payments, etc. upon the completion of the privatization and recognized in other current monetary assets. Chunghwa and its subsidiaries SENAO, CHIEF, CHSI, and SHE with the pension mechanism under the Labor Standards Law are considered as defined benefit plans. These pension plans provide benefits based on an employee’s length of service and average six-month salary prior to retirement. Chunghwa and its subsidiaries contribute an amount no more than 15% of salaries paid each month to their respective pension funds (the Funds), which are administered by the Labor Pension Fund Supervisory Committee (the Committee) and deposited in the names of the Committees in the Bank of Taiwan. The plan assets are held in a commingled fund which is operated and managed by the government’s designated authorities; as such, the Company does not have any right to intervene in the investments of the funds. According to the Article 56 of the Labor Standards Law of the ROC revised in February 2015, entities are required to contribute the difference in one appropriation to the Funds before the end of next March when the balance of the Funds is insufficient to pay employees who will meet the retirement eligibility criteria within next year. The amounts included in the consolidated balance sheets arising from the Company’s obligation in respect of its defined benefit plans were as follows: December 31 2016 2017 NT$ NT$ (In Millions) Present value of funded defined benefit obligation $ 34,572 $ 37,663 Fair value of plan assets (33,954 ) (34,972 ) Funded status - deficit $ 618 $ 2,691 Net defined benefit liabilities $ 1,537 $ 2,704 Net defined benefit assets (919 ) (13 ) $ 618 $ 2,691 Movements in the defined benefit obligation and the fair value of plan assets were as follows: Present Value of Funded Defined Benefit Obligation Fair Value of Plan Assets Net Defined Benefit Liabilities (Assets) NT$ NT$ NT$ (In Millions) Balance on January 1, 2015 $ 27,958 $ 21,496 $ 6,462 Current service cost 2,884 — 2,884 Interest expense/interest income 546 444 102 Amounts recognized in profit or loss 3,430 444 2,986 Remeasurement on the net defined benefit liability Return on plan assets (excluding amounts included in net interest) — 136 (136 ) Actuarial losses recognized from changes in demographic assumptions 11 — 11 Actuarial gains recognized from changes in financial assumptions (1 ) — (1 ) Actuarial losses recognized from experience adjustments 357 — 357 Amounts recognized in other comprehensive income 367 136 231 Contributions from employer — 2,435 (2,435 ) Benefits paid (717 ) (717 ) — Benefits paid directly by the Company (156 ) — (156 ) Balance on December 31, 2015 $ 30,882 $ 23,794 $ 7,088 Current service cost 2,866 — 2,866 Interest expense/interest income 600 573 27 Amounts recognized in profit or loss 3,466 573 2,893 Remeasurement on the net defined benefit liability Return on plan assets (excluding amounts included in net interest) — (352 ) 352 Actuarial gains recognized from changes in demographic assumptions (124 ) — (124 ) Actuarial losses recognized from changes in financial assumptions 1,715 — 1,715 Actuarial losses recognized from experience adjustments 100 — 100 Amounts recognized in other comprehensive income 1,691 (352 ) 2,043 Contributions from employer — 11,235 (11,235 ) Benefits paid (1,296 ) (1,296 ) — Benefits paid directly by the Company (171 ) — (171 ) Balance on December 31, 2016 $ 34,572 $ 33,954 $ 618 Current service cost 2,918 — 2,918 Interest expense/interest income 506 519 (13 ) Amounts recognized in profit or loss 3,424 519 2,905 Remeasurement on the net defined benefit liability Return on plan assets (excluding amounts included in net interest) — (193 ) 193 Actuarial losses recognized from changes in demographic assumptions 15 — 15 Actuarial losses recognized from experience adjustments 1,816 — 1,816 Amounts recognized in other comprehensive income 1,831 (193 ) 2,024 Contributions from employer — 2,635 (2,635 ) Benefits paid (1,943 ) (1,943 ) — Benefits paid directly by the Company (221 ) — (221 ) Balance on December 31, 2017 $ 37,663 $ 34,972 $ 2,691 Relevant pension costs recognized in profit and loss for defined benefit plans were as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Operating costs $ 1,794 $ 1,732 $ 1,734 Marketing expenses 856 838 847 General and administrative expenses 162 155 156 Research and development expenses 102 97 97 $ 2,914 $ 2,822 $ 2,834 The Company is exposed to following risks for the defined benefits plans under the Labor Standards Law: a. Investment risk Under the Labor Standards Law, the rate of return on assets shall not be lower than the average interest rate on a two-year time deposit published by the local banks and the government is responsible for any shortfall in the event that the rate of return is less than the required rate of return. The plan assets are held in a commingled fund mainly invested in foreign and domestic equity and debt securities and bank deposits which is operated and managed by the government’s designated authorities; as such, the Company does not have any right to intervene in the investments of the funds. b. Interest rate risk The decline in government bond interest rate will increase the present value of the obligation on the defined benefit plan, while the return on plan assets will increase. The net effect on the present value of the obligation on defined benefit plan is partially offset by the return on plan assets. c. Salary risk The calculation of the present value of defined benefit obligation is referred to the plan participants’ future salary. Hence, the increase in plan participants’ salary will increase the present value of the defined benefit obligation. The most recent actuarial valuation of plan assets and the present value of the defined benefit obligation were carried out by the independent actuary. The principal assumptions used for the purpose of the actuarial valuations were as follows: Measurement Date December 31 2016 2017 Discount rates 1.50% 1.50% Expected rates of salary increase 1.20%-2.00% 1.20%-2.00% If reasonably possible changes of the respective significant actuarial assumptions occur at the end of reporting periods, while holding all other assumptions constant, the present value of the defined benefit obligation would increase (decrease) as follows: December 31 2016 2017 NT$ NT$ (In Millions) Discount rates 0.5% increase $ (1,219 ) $ (1,232 ) 0.5% decrease $ 1,298 $ 1,310 Expected rates of salary increase 0.5% increase $ 1,379 $ 1,398 0.5% decrease $ (1,306 ) $ (1,326 ) The sensitivity analysis presented above may not be representative of the actual change in the present value of the defined benefit obligation as it is unlikely that the change in assumptions would occur in isolation of one another as some of the assumptions may be correlated. Furthermore, in presenting the above sensitivity analysis, the present value of the defined benefit obligation has been calculated using the projected unit credit method at the end of the reporting period, which is the same as that applied in calculating the defined benefit obligation liability recognized in the consolidated balance sheets. There is no change in the methods and assumptions used in preparing the sensitivity analysis from the previous period. December 31 2016 2017 NT$ NT$ (In Millions) The expected contributions to the plan for the next year $ 2,724 $ 4,393 The average duration of the defined benefit obligation 7-14 years 6-13 years The Company’s maturity analysis of the undiscounted benefit payments as of December 31, 2017 was as follows: Year Amount NT$ (In Millions) 2018 $ 2,042 2019 4,716 2020 8,088 2021 11,201 2022 and thereafter 48,310 $ 74,357 |
Equity
Equity | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Classes Of Share Capital [Abstract] | |
Equity | 29. EQUITY a. Share capital 1) Common stocks December 31 2016 2017 NT$ NT$ (In Millions) Number of authorized shares 12,000 12,000 Authorized shares $ 120,000 $ 120,000 Number of issued and paid shares 7,757 7,757 Issued and outstanding shares $ 77,574 $ 77,574 The issued common stocks of a par value at $10 per share entitled the right to vote and receive dividends. 2) Global depositary receipts The MOTC and some stockholders sold some common stocks of Chunghwa in an international offering of securities in the form of American Depositary Shares (“ADS”) (one ADS represents 10 common stocks) in July 2003, August 2005, and September 2006. The ADSs were traded on the New York Stock Exchange since July 17, 2003. As of December 31, 2017, the outstanding ADSs were 261 million common stocks, which equaled 26 million units and represented 3.36% of Chunghwa’s total outstanding common stocks. The ADS holders generally have the same rights and obligations as other common stockholders, subject to the provision of relevant laws. The exercise of such rights and obligations shall comply with the related regulations and deposit agreement, which stipulate, among other things, that ADS holders are entitled to, through deposit agents: a) Exercise their voting rights, b) Sell their ADSs, and c) Receive dividends declared and subscribe to the issuance of new shares. b. Additional paid-in capital The adjustments of additional paid-in capital for the years ended December 31, 2015, 2016 and 2017 were as follows: Share Premium Movements of Additional Paid-in Capital for Associates and Joint Ventures Accounted for Using Equity Method Movements of Additional Paid-in Capital Arising from Changes in Equities of Subsidiaries Difference between Consideration Received and Carrying Amount of the Subsidiaries’ Net Assets upon Disposal Donated Capital Stockholders’ Contribution Due to Privatization Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Balance on January 1, 2015 $ 126,045 $ — $ 14 $ — $ 13 $ 20,648 $ 146,720 Partial disposal of interests in subsidiaries — — — 27 — — 27 Other changes in additional paid-in capital in subsidiaries — — 1 — — — 1 Subsidiary purchased its treasury stock — — (15 ) — — — (15 ) Balance on December 31, 2015 $ 126,045 $ — $ — $ 27 $ 13 $ 20,648 $ 146,733 Balance on January 1, 2016 $ 126,045 $ — $ — $ 27 $ 13 $ 20,648 $ 146,733 Partial disposal of interests in subsidiaries — — — 58 — — 58 Change in additional paid-in capital for not participating in the capital increase of a subsidiary — — 389 — — — 389 Share-based payment transactions of subsidiaries — — — — — — — Balance on December 31, 2016 $ 126,045 $ — $ 389 $ 85 $ 13 $ 20,648 $ 147,180 Balance on January 1, 2017 $ 126,045 $ — $ 389 $ 85 $ 13 $ 20,648 $ 147,180 Unclaimed dividend — — — — 3 — 3 Change in additional paid-in capital from investments in associates and joint ventures accounted for using equity method — — — — — — — Partial disposal of interests in subsidiaries — — 1 76 — — 77 Change in additional paid-in capital for not participating in the capital increase of a subsidiary — — 802 — — — 802 Other changes in additional paid-in capital in subsidiaries — — — — — — — Share-based payment transactions of subsidiaries — — 2 — — — 2 Treasury stock transfer of subsidiaries — — 27 — — — 27 Balance on December 31, 2017 $ 126,045 $ — $ 1,221 $ 161 $ 16 $ 20,648 $ 148,091 Additional paid-in capital from share premium, donated capital and the difference between consideration received and the carrying amount of the subsidiaries’ net assets upon disposal may be utilized to offset deficits. Furthermore, when Chunghwa has no deficit, it may be distributed in cash or capitalized, which however is limited to a certain percentage of Chunghwa’s paid-in capital except the additional paid-in capital arising from unclaimed dividend can only be utilized to offset deficits. The additional paid-in capital from movements of paid-in capital arising from changes in equities of subsidiaries may only be utilized to offset deficits. Among additional paid-in capital from movements of investments in associates and joint ventures accounted for using equity method, the portion arising from the difference between consideration received and the carrying amount of the subsidiaries’ net assets upon disposal may be utilized to offset deficits; furthermore, when the Company has no deficit, it may be distributed in cash or capitalized. However, other additional paid-in capital recognized in proportion of share ownership may only be utilized to offset deficits. c. Retained earnings and dividends policy In accordance with the amendments to the Company Act of the ROC in May 2015, the recipients of dividends and bonuses are limited to stockholders and do not include employees. To comply with the above amendments to the Company Act of the ROC, amendments to the policy on dividend distribution and the addition of the policy on distribution of employees’ and directors’ compensation in Chunghwa’s Articles of Incorporation were approved by the stockholders in their meeting on June 24, 2016. In accordance with the Chunghwa’s amended Articles of Incorporation, Chunghwa must pay all outstanding taxes, offset deficits in prior years and set aside a legal reserve equal to 10% of its net income before distributing a dividend or making any other distribution to stockholders, except when the accumulated amount of such legal reserve equals to Chunghwa’s total issued capital, and depending on its business needs or requirements, may also set aside or reverse special reserves. No less than 50% of the remaining earnings comprising remaining balance of net income, if any, plus cumulative undistributed earnings shall be distributed as stockholders’ dividends, of which cash dividends to be distributed shall not be less than 50% of the total amount of dividends to be distributed. If cash dividend to be distributed is less than $0.10 per share, such cash dividend shall be distributed in the form of common stocks. For the information on compensation to the employees and remuneration to the directors accrued based on the Chunghwa’s amended Articles of Incorporation, please refer to Note 31.g. Employee benefit expenses. Special reserve was appropriated in accordance with the relevant laws and regulations or as requested by local authority. Pursuant to existing regulations, Chunghwa is required to set aside additional special reserve equivalent to debit balances under stockholder’s equity. For subsequent decrease in the deduction amount to stockholder’s equity, the decreased amount could be reversed from the special reserve to retained earnings. The appropriation for legal reserve shall be made until the accumulated reserve equals the aggregate par value of the outstanding capital stock of Chunghwa. This reserve can only be used to offset a deficit, or, when the legal reserve has exceeded 25% of Chunghwa’s paid-in capital, the excess may be transferred to capital or distributed in cash. Except for non-ROC resident stockholders, all stockholders receiving the dividends are entitled to a tax credit equal to their proportionate share of the income tax paid by the Company. The appropriations of the 2015 and 2016 earnings of Chunghwa approved by the stockholders in their meetings on June 24, 2016 and June 23, 2017 were as follows: Appropriation of Earnings Dividends Per Share For Fiscal Year 2015 For Fiscal Year 2016 For Fiscal Year 2015 For Fiscal Year 2016 NT$ NT$ NT$ NT$ (In Millions) Special reserve $ — $ 5 Cash dividends 42,551 38,336 $ 5.4852 $ 4.9419 The appropriations of earnings for 2017 had been proposed by Chunghwa’s Board of Directors on March 13, 2018. The appropriations and dividends per share were as follows: For Fiscal Year 2017 Appropriation of Earnings Dividends Per Share NT$ NT$ (In Millions) Reversal of special reserve $ 5 Cash dividends 37,205 $ 4.796 The appropriations of earnings for 2017 are subject to the resolution of the stockholders’ meeting planned to be held on June 15, 2018. d. Other equity items 1) Exchange differences arising from the translation of the foreign operations The exchange differences arising from the translation of the foreign operations from their functional currency to New Taiwan dollars were recognized as exchange differences arising from the translation of the foreign operations in other comprehensive income. 2) Unrealized gain (loss) on available-for-sale financial assets Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Beginning balance $ 740 $ 91 $ (51 ) Unrealized gain (loss) on available-for-sale financial assets (670 ) (721 ) 607 Income tax relating to unrealized gain and loss on available-for-sale financial assets (2 ) 2 2 Amount reclassified from equity to profit or loss on disposal of available-for-sale financial assets — — — Amount reclassified from equity to profit or loss on impairment of available-for-sale financial assets 23 577 — Ending balance $ 91 $ (51 ) $ 558 Unrealized gain (loss) on available-for-sale financial assets were accumulated gains and losses on the available-for-sale financial assets measured at fair value, which were recognized in other comprehensive income and were included in the calculation of the related disposal gain and loss or impairment loss of such financial assets upon reclassified to profits or losses. e. Noncontrolling interests Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Beginning balance $ 4,924 $ 5,065 $ 6,272 Attributable to noncontrolling interests Net income for the year 813 1,141 1,172 Exchange differences arising from the translation of the foreign operations (3 ) (41 ) (12 ) Unrealized gain (loss) on available-for-sale financial assets 2 — (2 ) Income tax relating to unrealized gain and loss on available-for-sale financial assets — — 1 Remeasurements of defined benefit pension plans (3 ) (18 ) (8 ) Income tax relating to remeasurements of defined benefit pension plans 1 3 — Share of other comprehensive income (loss) of associates accounted for using equity method 2 (1 ) (2 ) Cash dividends distributed by subsidiaries (350 ) (710 ) (942 ) Partial disposal of interests in subsidiaries 18 25 29 Change in additional paid-in capital for not participating in the capital increase of a subsidiary — 786 1,750 Other changes in additional paid-in capital of subsidiaries 2 — — Share-based payment transactions of subsidiaries 36 17 20 Subsidiary purchased its treasury stock (416 ) — — Net increase in noncontrolling interests 39 5 196 Ending balance $ 5,065 $ 6,272 $ 8,474 |
Revenue
Revenue | 12 Months Ended |
Dec. 31, 2017 | |
Revenue From Rendering Of Telecommunication Services [Abstract] | |
Revenue | 30. REVENUE The main source of revenue of the Company includes various telecommunications services in various different streams, and the related information was as discussed in Note 43. |
Net Income and Other Comprehens
Net Income and Other Comprehensive Income (Loss) | 12 Months Ended |
Dec. 31, 2017 | |
Text Block1 [Abstract] | |
Net Income and Other Comprehensive Income (Loss) | 31. NET INCOME AND OTHER COMPREHENSIVE INCOME (LOSS) a. Other income and expenses Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Loss on disposal of property, plant and equipment $ (109 ) $ (48 ) $ (107 ) Impairment loss on property, plant and equipment (138 ) (596 ) — Reversal of impairment loss on investment properties 142 148 11 Loss on disposal of intangible assets — — — Impairment loss on intangible assets — — (9 ) $ (105 ) $ (496 ) $ (105 ) b. Other income Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Dividend income $ 218 $ 391 $ 328 Rental income 38 41 61 Income from Piping Fund 202 202 — Others 192 438 447 $ 650 $ 1,072 $ 836 c. Other gains and losses Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Net foreign currency exchange gains (losses) $ 63 $ 181 $ (88 ) Gain on disposal of financial instruments — — 3 Valuation gain (loss) on financial assets and liabilities at fair value through profit or loss, net — (1 ) 1 Gain (loss) on disposal of investments accounted for using equity method 4 (2 ) — Impairment loss on investments accounted for using equity method (8 ) — — Impairment loss on available-for-sale financial assets (107 ) (577 ) — Others (180 ) (49 ) (48 ) $ (228 ) $ (448 ) $ (132 ) d. Impairment loss (reversal of impairment loss) on financial instruments Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Trade notes and accounts receivable $ 480 $ 943 $ 578 Other receivables $ 39 $ (2 ) $ 65 Available-for-sale financial assets $ 107 $ 577 $ — e. Impairment loss (reversal of impairment loss) on non-financial assets Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Inventories $ 198 $ 192 $ 52 Property, plant and equipment $ 138 $ 596 $ — Investments accounted for using equity method $ 8 $ — $ — Investment properties $ (142 ) $ (148 ) $ (11 ) Intangible assets $ — $ — $ 9 f. Depreciation and amortization expenses Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Property, plant and equipment $ 30,350 $ 29,087 $ 28,143 Investment properties 18 19 21 Intangible assets 3,080 3,379 3,766 Total depreciation and amortization expenses $ 33,448 $ 32,485 $ 31,930 Depreciation expenses summarized by functions Operating costs $ 28,292 $ 27,214 $ 26,402 Operating expenses 2,076 1,892 1,762 $ 30,368 $ 29,106 $ 28,164 Amortization expenses summarized by functions Operating costs $ 2,742 $ 3,042 $ 3,473 Marketing expenses 178 173 154 General and administrative expenses 116 126 104 Research and development expenses 44 38 35 $ 3,080 $ 3,379 $ 3,766 g. Employee benefit expenses Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Post-employment benefit Defined contribution plans $ 489 $ 544 $ 594 Defined benefit plans 2,914 2,822 2,834 3,403 3,366 3,428 Share-based payment Equity-settled share-based payment 36 17 22 Other employee benefit Salaries 25,526 25,985 25,760 Insurance 2,643 2,652 2,748 Others 15,717 15,730 15,449 43,886 44,367 43,957 Total employee benefit expenses $ 47,325 $ 47,750 $ 47,407 Summary by functions Operating costs $ 25,320 $ 25,190 $ 24,725 Operating expenses 22,005 22,560 22,682 $ 47,325 $ 47,750 $ 47,407 According to the Company Act as amended in May 2015 and the amendments to the Chunghwa’s Articles of Incorporation approved by the Chunghwa’s stockholders in their meeting on June 24, 2016, Chunghwa shall distribute employees’ compensation at the rates from 1.7% to 4.3% and remuneration to directors not higher than 0.17%, respectively, of pre-tax income. As of December 31, 2017, the payables of the employees’ compensation and the remuneration to directors were $1,596 million and $41 million, respectively. Such amounts have been approved by the Chunghwa’s Board of Directors on March 13, 2018 and will be reported to the stockholders in their meeting planned to be held on June 15, 2018. If there is a change in the proposed amounts after the annual financial statements are authorized for issue, the differences are recorded as a change in accounting estimate. The compensation to the employees and remuneration to the directors of 2015 and 2016 approved by the Board of Directors on March 11, 2016 and March 7, 2017, respectively, were as follows. 2015 2016 Cash Cash NT$ NT$ (In Millions) Compensation distributed to the employees $ 1,928 $ 1,702 Remuneration paid to the directors 45 42 There was no difference between the initial accrual amounts and the amounts proposed in the Board of Directors in 2016 and 2017 of the aforementioned compensation to employees and the remuneration to directors. h. Reclassification adjustments of other comprehensive income (loss) Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Unrealized gain (loss) on available-for-sale financial assets Arising during the year $ (671 ) $ (721 ) $ 605 Reclassification adjustments Upon disposal — — — Upon impairment 26 577 — $ (645 ) $ (144 ) $ 605 Cash flow hedges Gain arising during the year $ 18 $ 15 $ 3 Reclassification adjustments included in profit or loss 1 (1 ) (2 ) Adjusted against the carrying amount of hedged items (18 ) (15 ) (2 ) $ 1 $ (1 ) $ (1 ) |
Income Tax
Income Tax | 12 Months Ended |
Dec. 31, 2017 | |
Major Components Of Tax Expense Income [Abstract] | |
Income Tax | 32. INCOME TAX a. Income tax recognized in profit or loss The major components of income tax expense were as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Current tax Current tax expenses recognized for the year $ 8,570 $ 6,736 $ 7,996 Tax on unappropriated earnings 821 (346 ) (60 ) Income tax adjustments on prior years (83 ) (22 ) (2 ) Others 15 15 10 9,323 6,383 7,944 Deferred tax Deferred tax expense recognized for the year (222 ) 1,404 (101 ) Income tax adjustments on prior years — — 6 (222 ) 1,404 (95 ) Income tax recognized in profit or loss $ 9,101 $ 7,787 $ 7,849 Reconciliation of accounting profit and income tax expense was as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Income before income tax $ 51,953 $ 49,413 $ 48,009 Income tax expense calculated at the statutory rate (17%) $ 8,832 $ 8,400 $ 8,162 Nondeductible revenues and expenses in determining taxable income 28 5 34 Imputed income on tax — — — Unrecognized deductible temporary differences 11 (9 ) (1 ) Unrecognized loss carryforwards 83 12 10 Tax-exempt income (183 ) (25 ) (87 ) Income tax on unappropriated earnings 821 (346 ) (60 ) Investment credits (329 ) (234 ) (212 ) Effect of different tax rates of group entities operating in other jurisdictions (94 ) (8 ) (2 ) Income tax adjustments on prior years (83 ) (22 ) 4 Others 15 14 1 Income tax expense recognized in profit or loss $ 9,101 $ 7,787 $ 7,849 The applicable tax rate used above is the corporate tax rate of 17% payable by the entities subject to the Income Tax Act of the Republic of China, while the applicable tax rate used by subsidiaries in China is 25%. Tax rates used by other entities in the Company operating in other jurisdictions are based on the tax laws in those jurisdictions. In February 2018, it was announced by the President that the Income Tax Act in the ROC was amended and starting from 2018, the corporate income tax rate will be adjusted from 17% to 20%. In addition, the tax rate applicable to 2018 unappropriated earnings will be reduced from 10% to 5%. Deferred tax assets and deferred tax liabilities recognized as at December 31, 2017 are expected to increase by $480 million and $236 million, respectively, as a result of the aforementioned tax rate changes in 2018. b. Income tax expense (benefit) recognized in other comprehensive income Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Deferred tax Unrealized gain or loss on available-for-sale financial assets $ 2 $ (2 ) $ (3 ) Remeasurement on defined benefit plan (39 ) (347 ) (344 ) Total income tax benefit recognized in other comprehensive income $ (37 ) $ (349 ) $ (347 ) c. Current tax assets and liabilities December 31 2016 2017 NT$ NT$ (In Millions) Current tax assets Tax refund receivable (included in other current assets - other) $ 5 $ 2 Current tax liabilities Income tax payable $ 6,522 $ 8,674 d. Deferred income tax assets and liabilities The movements of deferred income tax assets and liabilities were as follows: For the year ended December 31, 2015 January 1, 2015 Recognized in Profit or Loss Recognized in Other Comprehensive Income From Business Combination December 31, 2015 NT$ NT$ NT$ NT$ NT$ (In Millions) Deferred Income Tax Assets Temporary differences Defined benefit obligation $ 1,096 $ 71 $ 39 $ — $ 1,206 Share of the profit of associates and joint ventures accounted for using equity method 277 48 — — 325 Allowance for doubtful receivables over quota 114 55 — — 169 Impairment loss on property, plant and equipment 32 12 — — 44 Deferred revenue 156 (20 ) — — 136 Valuation loss on inventory 41 (8 ) — — 33 Estimated warranty liabilities 19 (1 ) — — 18 Unrealized foreign exchange loss, net — 18 — — 18 Accrued award credits liabilities 28 (6 ) — — 22 Property, plant and equipment — — — 2 2 Others 34 6 — — 40 1,797 175 39 2 2,013 Loss carryforwards 29 17 — 2 48 $ 1,826 $ 192 $ 39 $ 4 $ 2,061 January 1, 2015 Recognized in Profit or Loss Recognized in Other Comprehensive Income From Business Combination December 31, 2015 NT$ NT$ NT$ NT$ NT$ (In Millions) Deferred Income Tax Liabilities Temporary differences Defined benefit obligation $ — $ (1 ) $ — $ — $ (1 ) Land value incremental tax (95 ) — — — (95 ) Intangible assets — 1 — (44 ) (43 ) Deferred revenue for award credits (5 ) 3 — — (2 ) Valuation gain or loss on financial instruments, net (3 ) — (2 ) — (5 ) Unrealized foreign exchange gain, net (29 ) 28 — — (1 ) Others — (1 ) — — (1 ) $ (132 ) $ 30 $ (2 ) $ (44 ) $ (148 ) For the year ended December 31, 2016 January 1, 2016 Recognized in Profit or Loss Recognized in Other Comprehensive Income December 31, 2016 NT$ NT$ NT$ NT$ (In Millions) Deferred Income Tax Assets Temporary differences Defined benefit obligation $ 1,206 $ (179 ) $ 347 $ 1,374 Share of profits of associates and joint ventures accounted for using equity method 325 5 — 330 Allowance for doubtful receivables over quota 169 61 — 230 Impairment loss on property, plant and equipment 44 78 — 122 Deferred revenue 136 (19 ) — 117 Valuation loss on inventory 33 (13 ) — 20 Estimated warranty liabilities 18 1 — 19 Unrealized foreign exchange loss, net 18 (18 ) — — Accrued award credits liabilities 22 (2 ) — 20 Property, plant and equipment 2 — — 2 Others 40 (6 ) — 34 2,013 (92 ) 347 2,268 Loss carryforwards 48 6 — 54 $ 2,061 $ (86 ) $ 347 $ 2,322 January 1, 2016 Recognized in Profit or Loss Recognized in Other Comprehensive Income December 31, 2016 NT$ NT$ NT$ NT$ (In Millions) Deferred Income Tax Liabilities Temporary differences Defined benefit obligation $ (1 ) $ (1,268 ) $ — $ (1,269 ) Land value incremental tax (95 ) — — (95 ) Intangible assets (43 ) 3 — (40 ) Deferred revenue for award credits (2 ) (44 ) — (46 ) Valuation gain or loss on financial instruments, net (5 ) — 2 (3 ) Unrealized foreign exchange gain, net (1 ) (9 ) — (10 ) Others (1 ) — — (1 ) $ (148 ) $ (1,318 ) $ 2 $ (1,464 ) For the year ended December 31, 2017 January 1, 2017 Recognized in Profit or Loss Recognized in Other Comprehensive Income December 31, 2017 NT$ NT$ NT$ NT$ (In Millions) Deferred Income Tax Assets Temporary differences Defined benefit obligation $ 1,374 $ 5 $ 344 $ 1,723 Share of profits of associates and joint ventures accounted for using equity method 330 1 — 331 Allowance for doubtful receivables over quota 230 59 — 289 Impairment loss on property, plant and equipment 122 (10 ) — 112 Deferred revenue 117 (11 ) — 106 Valuation loss on inventory 20 3 — 23 Estimated warranty liabilities 19 3 — 22 Unrealized foreign exchange loss, net — 17 — 17 Accrued award credits liabilities 20 (5 ) — 15 Trade-in right — 15 — 15 Property, plant and equipment 2 — — 2 Others 34 (5 ) — 29 2,268 72 344 2,684 Loss carryforwards 54 (8 ) — 46 $ 2,322 $ 64 $ 344 $ 2,730 January 1, 2017 Recognized in Profit or Loss Recognized in Other Comprehensive Income December 31, 2017 NT$ NT$ NT$ NT$ (In Millions) Deferred Income Tax Liabilities Temporary differences Defined benefit obligation $ (1,269 ) $ 4 $ — $ (1,265 ) Land value incremental tax (95 ) — — (95 ) Intangible assets (40 ) 1 — (39 ) Deferred revenue for award credits (46 ) 17 — (29 ) Valuation gain or loss on financial instruments, net (3 ) (1 ) 3 (1 ) Unrealized foreign exchange gain, net (10 ) 10 — — Others (1 ) — — (1 ) $ (1,464 ) $ 31 $ 3 $ (1,430 ) e. Items for which no deferred income tax assets have been recognized December 31 2016 2017 NT$ NT$ (In Millions) Loss carryforwards Expire in 2018 $ 126 $ 126 Expire in 2019 138 138 Expire in 2020 42 42 Expire in 2021 13 9 Expire in 2022 1 11 Expire in 2023 1 — Expire in 2024 — — Expire in 2025 14 13 Expire in 2026 — — Expire in 2027 — 2 $ 335 $ 341 Deductible temporary differences $ 3 $ 2 f. Information about unused loss carryforwards As of December 31, 2017, unused loss carryforwards was as follows: Remaining Creditable Amount Expiry Year NT$ (In Millions) $ 126 2018 138 2019 45 2020 20 2021 12 2022 1 2023 4 2024 28 2025 10 2026 3 2027 $ 387 g. The related information under the Integrated Income Tax System was as follows: Unappropriated earnings information Chunghwa’s earnings generated prior to June 30, 1988 have been appropriated. Imputation credit account December 31 2016 NT$ (In Millions) Balance of Imputation Credit Account (“ICA”) $ 7,691 The creditable ratio for distribution of earnings of 2016 was 20.48%. Effective from January 1, 2015, the creditable ratio for individual stockholders residing in the Republic of China is half of the original creditable ratio according to the revised Article 66-6 of the Income Tax Act of the ROC in June 2014. However, starting from January 1, 2018, the imputation tax system was abolished and imputation credit account is no longer applicable based on amended ROC Income Tax Act announced in February 2018. h. Income tax examinations Income tax returns of Chunghwa have been examined by the tax authorities through 2014 (except 2013). Income tax returns of SENAO, HHI, CHSI and CHPT have been examined by the tax authorities through 2015. Income tax returns of CHI, SFD, SHE, CHYP, LED, CHIEF, Unigate, CLPT, ISPOT, Youth, Youyi, Aval and CHST have been examined through 2016, and income tax returns of CEI’s 2015 current final reports on total business income to liquidation date and on income earned from liquidation have been examined by the tax authorities. |
Earnings Per Share
Earnings Per Share | 12 Months Ended |
Dec. 31, 2017 | |
Earnings Per Share [Abstract] | |
Earnings Per Share | 33. EARNINGS PER SHARE Net income and weighted average number of common stocks used in the calculation of earnings per share were as follows: Net Income Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Net income used to compute the basic earnings per share Net income attributable to the parent $ 42,039 $ 40,485 $ 38,988 Assumed conversion of all dilutive potential common stocks Employee stock options, employee bonus and compensation of subsidiaries (1 ) (1 ) — Net income used to compute the diluted earnings per share $ 42,038 $ 40,484 $ 38,988 Weighted Average Number of Common Stocks (Millions Shares) Year Ended December 31 2015 2016 2017 Weighted average number of common stocks used to compute the basic earnings per share 7,757 7,757 7,757 Assumed conversion of all dilutive potential common stocks Employee bonus or employee compensation 19 12 11 Weighted average number of common stocks used to compute the diluted earnings per share 7,776 7,769 7,768 Because Chunghwa may settle the employee compensation in shares or cash, Chunghwa shall presume that it will be settled in shares and takes those shares into consideration when calculating the weighted average number of outstanding shares used in the calculation of diluted EPS if the shares have a dilutive effect. The dilutive effect of the shares needs to be considered until the approval of the number of shares to be distributed to employees as compensation in the following year. |
Share-based Payment Arrangement
Share-based Payment Arrangement | 12 Months Ended |
Dec. 31, 2017 | |
Text Block1 [Abstract] | |
Share-based Payment Arrangement | 34. SHARE-BASED PAYMENT ARRANGEMENT a. SENAO share-based compensation plan (“SENAO Plan”) described as follows: Effective Date Grant Date Stock Options Units Exercise Price (In Thousands) NT$ 2012.05.28 2013.05.07 10,000 $70.70 (Original price$93.00) Each option is eligible to subscribe for one common share when exercisable. Under the terms of the SENAO Plan, the options are granted at an exercise price equal to the closing price of the SENAO’s common stocks listed on the TWSE on the higher of closing price or par value. The SENAO Plan have exercise price adjustment formula upon the changes in common stocks equity (including cash capital increase, new share issue through capitalization of earnings and additional paid-in capital, merger, spin off and new share issue for Global Depositary Shares, and so on) or distribution of cash dividends. The options of SENAO Plan are valid for six years and the graded vesting schedule for which 50% of option granted will vest two years after the grant date and another two tranches of 25%, each will vest three and four years after the grant date respectively. The compensation costs of stock options granted on May 7, 2013, were $35 million, $13 million and $4 million for the years ended December 31, 2015, 2016 and 2017, respectively. SENAO modified the plan terms of the outstanding stock options in August 2015, the exercise price changed from $84.30 to $81.40 per share. The modification did not cause any incremental fair value granted. SENAO modified the plan terms of the outstanding stock options in July 2016, the exercise price changed from $81.40 to $76.10 per share. The modification did not cause any incremental fair value granted. SENAO modified the plan terms of the outstanding stock options in July 2017, the exercise price changed from $76.10 to $70.70 per share. The modification did not cause any incremental fair value granted. Information about SENAO’s outstanding stock options for the years ended December 31, 2015, 2016 and 2017 was as follows: Year Ended December 31, 2015 Granted on May 7, 2013 Number of Options Weighted- average Exercise Price (In Thousands) NT$ Employee stock options Options outstanding at beginning of the year 9,027 $ 84.30 Options exercised — — Options forfeited (1,240 ) — Options outstanding at end of the year 7,787 81.40 Options exercisable at end of the year 4,049 81.40 Year Ended December 31, 2016 Granted on May 7, 2013 Number of Options Weighted- average Exercise Price (In Thousands) NT$ Employee stock options Options outstanding at beginning of the year 7,787 $ 81.40 Options exercised — — Options forfeited (1,200 ) — Options outstanding at end of the year 6,587 76.10 Options exercisable at end of the year 4,947 76.10 Year Ended December 31, 2017 Granted on May 7, 2013 Number of Options Weighted- average Exercise Price (In Thousands) NT$ Employee stock options Options outstanding at beginning of the year 6,587 $ 76.10 Options exercised — — Options forfeited (661 ) — Options outstanding at end of the year 5,926 70.70 Options exercisable at end of the year 5,926 70.70 As of December 31, 2016 information about employee stock options outstanding was as follows: Options Outstanding Options Exercisable Range of Exercise Price Number of Options Weighted- average Remaining Contractual Life Weighted- average Exercise Price Number of Options Weighted- average Exercise Price NT$ (In Thousands) (Years) NT$ (In Thousands) NT$ $ 76.10 6,587 2.35 $ 76.10 4,947 $ 76.10 As of December 31, 2017 information about employee stock options outstanding was as follows: Options Outstanding Options Exercisable Range of Exercise Price Number of Options Weighted- average Remaining Contractual Life Weighted- average Exercise Price Number of Options Weighted- average Exercise Price NT$ (In Thousands) (Years) NT$ (In Thousands) NT$ $ 70.70 5,926 1.35 $ 70.70 5,926 $ 70.70 SENAO used the fair value method to evaluate the options using the Black-Scholes model and the related assumptions and the fair value of the options were as follows: Stock Options Granted on May 7, 2013 Grant-date share price (NT$) $ 93.00 Exercise price (NT$) $ 93.00 Dividends yield — Risk-free interest rate 0.91 % Expected life 4.375 years Expected volatility 36.22 % Weighted-average fair value of grants (NT$) $ 28.72 Expected volatility was based on the historical share price volatility of SENAO over the period equal to the expected life of SENAO Plan. b . SENAO transferred the treasury stock The Board of Directors of SENAO resolved to transfer treasury stock to specific employees in May and November 2017. The aforementioned treasury stock transferred to employees were measured at the fair value of the grant date. SENAO totally transfered 3,342 thousand shares of treasury stock and the compensation cost of $9 million was recognized for the year ended December 31, 2017. SENAO used the fair value method to evaluate share-based payment transaction using the Black-Scholes model and the related assumptions and the fair value of the option were as follows: Stock Options Granted on May 23 , 2017 Stock Options Granted on November 17 , 2017 Grant-date share price (NT$) $ 53.60 $ 51.00 Exercise price (NT$) $ 49.28 $ 49.28 Dividends yield — — Risk-free interest rate 0.59 % 0.59 % Expected life 9 days 14 days Expected volatility 12.35 % 9.94 % Weighted-average fair value of grants (NT$) $ 4.33 $ 1.75 Expected volatility was based on the historical share price volatility of SENAO over three months before the grant date. c . CHIEF share-based compensation plan (“CHIEF Plan”) described as follows: Effective Date Grant Date Stock Options Units Exercise Price NT$ 2015.10.22 2015.10.22 2,000 $34.40 (Original price$43.00) 2017.12.18 2017.12.19 950 147.00 Each option is eligible to subscribe for one thousand common stocks when exercisable. Under the terms of the CHIEF Plan, the options are granted at an exercise price equal to $147.00 and $43.00, respectively. The options are granted to specific employees that meet the vesting conditions. The CHIEF Plan has exercise price adjustment formula upon the changes in common stocks or distribution of cash dividends. The options of CHIEF Plan are valid for five years and the graded vesting schedule will vest two years after the grant date. The compensation costs recognized for stock options granted on October 22, 2015 were $1 million, $4 million and $3 million for the years ended December 31, 2015, 2016 and 2017, respectively. The compensation cost recognized for stock options granted on December 19, 2017 was $0.1 million for the year ended December 31, 2017. CHIEF modified the plan terms of the outstanding stock options in July 2016, the exercise price changed from $43.00 to $34.40 per share. The modification did not cause any incremental fair value granted. Information about CHIEF’s outstanding stock options for the years ended December 31, 2015, 2016 and 2017 was as follows: For the year ended December 31 2015 2016 Granted on October 22, 2015 Granted on October 22, 2015 Number of Options Weighted Average Exercise Price (NT$) Number of Options Weighted Average Exercise Price (NT$) Employee stock options Options outstanding at beginning of the year — $ — 2,000 $ 43.00 Options granted 2,000 43.00 — — Options forfeited — — (52 ) — Options outstanding at end of the year 2,000 43.00 1,948 34.40 Option exercisable at end of the year — — — — For the year ended December 31 2017 Granted on October 22, 2015 Granted on December 19, 2017 Number of Options Weighted Average Exercise Price (NT$) Number of Options Weighted Average Exercise Price (NT$) Employee stock options Options outstanding at beginning of the year 1,948 $ 34.40 — $ — Options granted — — 950 147.00 Options forfeited (12 ) — — — Options outstanding at end of the year 1,936 34.40 950 147.00 Option exercisable at end of the year 968 34.40 — — As of December 31, 2016, information about employee stock options outstanding was as follows: Granted on October 22, 2015 Options Outstanding Options Exercisable Range of Exercise Price Number of Options Weighted Average Remaining Contractual Life Weighted Average Exercise Price Number of Options Weighted Average Exercise Price NT$ (Years) NT$ NT$ $ 34.40 1,948 3.81 $ 34.40 — $ — As of December 31, 2017, information about employee stock options outstanding was as follows: Granted on October 22, 2015 Options Outstanding Options Exercisable Range of Exercise Price Number of Options Weighted Average Remaining Contractual Life Weighted Average Exercise Price Number of Options Weighted Average Exercise Price NT$ (Years) NT$ NT$ $ 34.40 1,936 2.81 $ 34.40 968 $ 34.40 Granted on December 19, 2017 Options Outstanding Options Exercisable Range of Exercise Price Number of Options Weighted Average Remaining Contractual Life Weighted Average Exercise Price Number of Options Weighted Average Exercise Price NT$ (Years) NT$ NT$ $ 147.00 950 4.96 $ 147.00 — $ — CHIEF used the fair value method to evaluate the options using the Black-Scholes model and binomial option pricing model and the related assumptions and the fair value of the options were as follows: Stock Options Granted on October 22, 2015 Stock Options Granted on December 19, 2017 Grant-date share price (NT$) $ 39.55 $ 95.92 Exercise price (NT$) $ 43.00 $ 147.00 Dividends yield — — Risk-free interest rate 0.86 % 0.62 % Expected life 5 years 5 years Expected volatility 21.02 % 17.35 % Weighted average fair value of grants (NT$) $ 4,863 $ 2,318 Expected volatility was based on the average annualized historical share price volatility of CHIEF’s comparable companies before the grant date. d . New shares reserved for subscription by employees under cash injection of CHPT 1) Capital Increase in March 2016 On December 8, 2015, the Board of Directors of CHPT approved the cash injection to issue 2,787 thousand shares and simultaneously reserved 418 thousand shares for subscription by employees according to the Company Act of the ROC. Furthermore, when the employees subscribed some shares or discarded their rights to subscribe shares, the Board of Directors of CHPT authorized the chairman of the Board of Directors to contact specific people or group to subscribe. The aforementioned options granted to employees are accounted for and measured at fair value. The compensation cost was $0.016 million for the year ended December 31, 2016. CHPT used the fair value method to evaluate the options granted to employees on March 10, 2016 using the Black-Scholes model and the related assumptions and the fair value of the options were as follows: Stock Options Granted on March 10, 2016 Grant-date share price (NT$) $ 302.46 Exercise price (NT$) $ 360.00 Dividends yield — Risk-free interest rate 0.37 % Expected life 12 days Expected volatility 37.43 % Weighted average fair value of grants (NT$) $ 0.04 Expected volatility was based on the average annualized historical share price volatility of CHPT’s comparable companies before the grant date. 2 ) Capital Increase in September 2017 On February 8, 2017, the Board of Directors of CHPT approved the cash injection to issue 2,000 thousand shares and simultaneously reserved 300 thousand shares for subscription by employees according to the Company Act of the ROC. Furthermore, when the employees subscribed some shares or discarded their rights to subscribe shares, the Board of Directors of CHPT authorized the chairman of the Board of Directors to contact specific people or group to subscribe. The aforementioned options granted to employees are accounted for and measured at fair value. The compensation cost was $6 million for the year ended December 31, 2017. CHPT used the fair value method to evaluate the options granted to employees on September 18, 2017 using the Black-Scholes model and the related assumptions and the fair value of the options were as follows: Stock Options Granted on September 18, 2017 Grant-date share price (NT$) $ 1,295.00 Exercise price (NT$) $ 1,267.33 Dividends yield — Risk-free interest rate 0.35 % Expected life 4 days Expected volatility 28.30 % Weighted average fair value of grants (NT$) $ 31.60 Expected volatility was based on the historical share price volatility of CHPT over the period equal to the expected life. |
Non-cash Transactions
Non-cash Transactions | 12 Months Ended |
Dec. 31, 2017 | |
Noncash Investing Activities [Abstract] | |
Non-cash Transactions | 35. NON-CASH TRANSACTIONS For the years ended December 31, 2015, 2016 and 2017, the Company entered into the following non-cash investing activities : Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Increase in property, plant and equipment $ 24,451 $ 24,591 $ 26,069 Other payables 633 (1,074 ) 806 $ 25,084 $ 23,517 $ 26,875 |
Operating Lease Arrangements
Operating Lease Arrangements | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Finance Lease And Operating Lease By Lessor [Abstract] | |
Operating Lease Arrangements | 36. OPERATING LEASE ARRANGEMENTS a. The Company as lessee Except for the ST-2 satellite referred in Note 40 to the consolidated financial statements, the Company entered into several lease agreements for base stations located all over in Taiwan. The future aggregate minimum lease payments under non-cancellable operating leases are as follows: December 31 2016 2017 NT$ NT$ (In Millions) Within one year $ 2,811 $ 2,918 Longer than one year but within five years 5,450 5,796 Longer than five years 960 779 $ 9,221 $ 9,493 b. The Company as lessor The Company leases out some land and buildings. The future aggregate minimum lease collection under non-cancellable operating leases are as follows: December 31 2016 2017 NT$ NT$ (In Millions) Within one year $ 427 $ 353 Longer than one year but within five years 600 659 Longer than five years 321 243 $ 1,348 $ 1,255 |
Capital Management
Capital Management | 12 Months Ended |
Dec. 31, 2017 | |
Capital Commitments [Abstract] | |
Capital Management | 37. CAPITAL MANAGEMENT The Company manages its capital to ensure that entities in the Company will be able to continue as going concerns while maximizing the return to stakeholders through the optimization of the debt and equity balance. The capital structure of the Company consists of debt of the Company and the equity attributable to the parent. Some consolidated entities are required to maintain minimum paid-in capital amount as prescribed by the applicable laws. The management reviews the capital structure of the Company as needed. As part of this review, the management considers the cost of capital and the risks associated with each class of capital. According to the management’s suggestion, the Company maintains a balanced capital structure through paying cash dividends, increasing its share capital, purchasing outstanding shares, and proceeds from new debt or repayment of debt. |
Financial Instruments
Financial Instruments | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Financial Instruments [Abstract] | |
Financial Instruments | 38. FINANCIAL INSTRUMENTS Categories of Financial Instruments December 31 2016 2017 NT$ NT$ (In Millions) Financial assets Measured at FVTPL Held for trading $ — $ — Held-to-maturity financial assets 2,140 — Loans and receivables (Note a) 70,040 68,983 Available-for-sale financial assets 4,764 5,751 Financial liabilities Measured at FVTPL Held for trading 1 1 Hedging derivative financial liabilities 1 1 Measured at amortized cost (Note b) 40,553 39,725 Note a: The balances included cash and cash equivalents, trade notes and accounts receivable, receivables from related parties, other current monetary assets, other financial assets and refundable deposits (classified as other noncurrent assets) which were loans and receivables. Please refer to Notes 7, 11, 14, 20 and 40. Note b: The balances included short-term loans, trade notes and accounts payable, payables to related parties, partial other payables, customers’ deposits and long-term loans which were financial liabilities carried at amortized cost. Please refer to Notes 22, 23, 24, 25 and 40. Financial Risk Management Objectives The main financial instruments of the Company include equity and debt investments, accounts receivable, accounts payable and loans. The Company’s Finance Department provides services to its business units, co-ordinates access to domestic and international capital markets, monitors and manages the financial risks relating to the operations of the Company through internal risk reports which analyze exposures by degree and magnitude of risks. These risks include market risk (including foreign currency risk, interest rate risk and other price risk), credit risk, and liquidity risk. The Company seeks to minimize the effects of these risks by using derivative financial instruments to hedge risk exposures. The use of financial derivatives is governed by the Company’s policies approved by the Board of Directors. Those derivatives are used to hedge the risks of exchange rate fluctuation arising from operating or investment activities. Compliance with policies and risk exposure limits is reviewed by the Company’s Finance Department on a continuous basis. The Company does not enter into or trade financial instruments, including derivative financial instruments, for speculative purposes. Chunghwa reports the significant risk exposures and related action plans timely and actively to the audit committee and to the Board of Directors if needed. a. Market risk The Company is exposed to market risks of changes in foreign currency exchange rates and interest rates. The Company uses forward exchange contracts to hedge the exchange rate risk arising from assets and liabilities denominated in foreign currencies. There were no changes to the Company’s exposure to market risks or the manner in which these risks are managed and measured. 1) Foreign currency risk The carrying amounts of the Company’s foreign currency denominated monetary assets and monetary liabilities at the balance sheet dates were as follows: December 31 2016 2017 NT$ NT$ (In Millions) Assets USD $ 5,327 $ 5,584 EUR 14 28 SGD 106 63 RMB 30 3 JPY 13 36 Liabilities USD 4,238 4,964 EUR 968 1,323 SGD 1 96 RMB — — JPY 10 12 The carrying amounts of the Company’s derivatives with exchange rate risk exposures at the balance sheet dates were as follows: December 31 2016 2017 NT$ NT$ (In Millions) Assets USD $ — $ — Liabilities USD — — EUR 2 1 Foreign currency sensitivity analysis The Company is mainly exposed to the fluctuations of the currencies listed above. The following table details the Company’s sensitivity to a 5% increase and decrease in the functional currency against the relevant foreign currencies. 5% is the sensitivity rate used when reporting foreign currency risk internally to key management personnel and represents management’s assessment of the reasonably possible changes in foreign exchange rates. The sensitivity analysis includes only outstanding foreign currency denominated monetary items and forward exchange contracts. A positive number below indicates an increase in pre-tax profit or equity where the functional currency weakens 5% against the relevant currency. Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Profit or loss Monetary assets and liabilities (a) USD $ 21 $ 54 $ 31 EUR (62 ) (48 ) (65 ) SGD 5 5 (2 ) RMB 2 1 — JPY 12 — 1 Derivatives (b) USD 1 3 6 EUR 33 8 3 Equity Derivatives (c) EUR 15 5 7 a) This is mainly attributable to the exposure to foreign currency denominated receivables and payables of the Company outstanding at the balance sheet dates. b) This is mainly attributable to the forward exchange contracts. c) This is mainly attributable to the changes in the fair value of derivatives that are designated as cash flow hedges. For a 5% strengthening of the functional currency against the relevant currencies, it would have the equal but opposite effect on the pre-tax profit or equity for the amounts shown above. 2) Interest rate risk The carrying amounts of the Company’s exposures to interest rates on financial assets and financial liabilities at the balance sheet dates were as follows: December 31 2016 2017 NT$ NT$ (In Millions) Fair value interest rate risk Financial assets $ 28,303 $ 25,911 Cash flow interest rate risk Financial assets 6,582 6,715 Financial liabilities 1,738 1,670 Interest rate sensitivity analysis The sensitivity analyses below have been determined based on the exposure to interest rates for non-derivative instruments at the end of the reporting period. A 25 basis point increase or decrease is used when reporting interest rate risk internally to key management personnel and represents management’s assessment of the reasonably possible change in interest rates. If interest rates had been 25 basis points higher/lower and all other variables were held constant, the Company’s pre-tax income would increase/decrease by $12 million, $12 million and $13 million for the years ended December 31, 2015, 2016 and 2017, respectively. This is mainly attributable to the Company’s exposure to floating interest rates on its financial assets and short-term and long-term loan. 3) Other price risk The Company is exposed to equity price risks arising from listed equity investments. Equity investments are held for strategic rather than trading purposes. The management managed the risk through holding various risk portfolios. Further, the Company assigned finance and investment departments to monitor the price risk. Equity price sensitivity analysis The sensitivity analyses below have been determined based on the exposure to equity price risks at the end of the reporting period. If equity prices of listed equity securities had been 5% higher/lower, other comprehensive income would have increased/decreased by $162 million, $126 million and $156 million as a result of the changes in fair value of available-for-sale assets for the years ended December 31, 2015, 2016 and 2017, respectively. b. Credit risk Credit risk refers to the risk that a counterparty would default on its contractual obligations resulting in financial loss to the Company. The maximum credit exposure of the aforementioned financial instruments is equal to their carrying amounts recognized in consolidated balance sheet as of the balance sheet date. The Company has large trade receivables outstanding with its customers. A substantial majority of the Company’s outstanding trade receivables are not covered by collateral or credit insurance. The Company has implemented ongoing measures including enhancing credit assessments and strengthening overall risk management to reduce its credit risk. While the Company has procedures to monitor and limit exposure to credit risk on trade receivables, there can be no assurance such procedures will effectively limit its credit risk and avoid losses. This risk is heightened during periods when economic conditions worsen. As the Company serves a large number of unrelated consumers, the concentration of credit risk was limited. c. Liquidity risk The Company manages and maintains sufficient cash and cash equivalent position to support the operations and reduce the impact on fluctuation of cash flow. 1) Liquidity and interest risk tables The following tables detailed the Company’s remaining contractual maturity for its non-derivative financial liabilities with agreed repayment periods. The tables had been drawn up based on the undiscounted cash flows of financial liabilities based on the earliest date on which the Company is required to pay. Weighted Average Effective Interest Rate (%) Less Than 1 Month 1-3 Months 3 Months to 1 Year 1-5 Years More than 5 Year Total NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) December 31, 2016 Non-derivative financial liabilities Non-interest bearing — $ 43,975 $ — $ 2,015 $ 4,610 $ — $ 50,600 Floating interest rate instruments 1.00 — 38 100 1,600 — 1,738 $ 43,975 $ 38 $ 2,115 $ 6,210 $ — $ 52,338 December 31, 2017 Non-derivative financial liabilities Non-interest bearing — $ 41,884 $ — $ 3,197 $ 4,671 $ — $ 49,752 Floating interest rate instruments 0.97 50 — 20 1,600 — 1,670 $ 41,934 $ — $ 3,217 $ 6,271 $ — $ 51,422 The following table detailed the Company’s liquidity analysis for its derivative financial instruments. The table had been drawn up based on the undiscounted gross inflows and outflows on those derivatives that require gross settlement. Less Than 1 Month 1-3 Months 3 Months to 1 Year 1-5 Years Total NT$ NT$ NT$ NT$ NT$ (In Millions) December 31, 2016 Gross settled Forward exchange contracts Inflows $ 55 $ 267 $ — $ — $ 322 Outflows 55 269 — — 324 $ — $ (2 ) $ — $ — $ (2 ) December 31, 2017 Gross settled Forward exchange contracts Inflows $ 125 $ 173 $ 36 $ — $ 334 Outflows 126 174 36 — 336 $ (1 ) $ (1 ) $ — $ — $ (2 ) 2) Financing facilities December 31 2016 2017 NT$ NT$ (In Millions) Unsecured bank loan facility Amount used $ 118 $ 90 Amount unused 46,219 45,749 $ 46,337 $ 45,839 Secured bank loan facility Amount used $ 1,620 $ 1,600 Amount unused 200 1,910 $ 1,820 $ 3,510 |
Fair Value Information
Fair Value Information | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Fair Value Measurement Of Financial Instruments [Abstract] | |
Fair Value Information | 39. FAIR VALUE INFORMATION The fair value measurement guidance establishes a framework for measuring fair value and expands disclosure about fair value measurements. The standard describes a fair value hierarchy based on three levels of inputs that may be used to measure fair value. These levels are: Level 1 fair value measurements: These measurements are those derived from quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 fair value measurements: These measurements are those derived from inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly (i.e. as prices) or indirectly (i.e. derived from prices). Level 3 fair value measurements: These measurements are those derived from valuation techniques that include inputs for the asset or liability that are not based on observable market data (unobservable inputs). a. Financial instruments that are not measured at fair value but for which fair value is disclosed Except for what disclosed in the following table, the Company considers that the carrying amounts of financial assets and liabilities not measured at fair value approximate their fair values or the fair values cannot be reliable estimated: December 31, 2016 Carrying Fair Value Amount Level 1 Level 2 Level 3 Held-to-maturity financial assets Corporate bonds $ 1,990 $ — $ 1,996 $ — Bank debentures 150 — 150 — $ 2,140 $ — $ 2,146 $ — The Level 2 fair values are estimated using discounted cash flow models. The models use market-based observable inputs including duration, yield rate and credit rating. b. Financial instruments that are measured at fair value on a recurring basis December 31, 2016 Level 1 Level 2 Level 3 Total Financial assets at FVTPL Derivative $ — $ — $ — $ — Available-for-sale financial assets Listed securities Equity investments $ 2,521 $ — $ — $ 2,521 Financial liabilities at FVTPL Derivative $ — $ 1 $ — $ 1 Hedging derivative financial liabilities $ — $ 1 $ — $ 1 December 31, 2017 Level 1 Level 2 Level 3 Total Available-for-sale financial assets Listed securities Equity investments $ 3,125 $ — $ — $ 3,125 Financial liabilities at FVTPL Derivative $ — $ 1 $ — $ 1 Hedging derivative financial liabilities $ — $ 1 $ — $ 1 There were no transfers between Levels 1 and 2 for the years ended December 31, 2016 and 2017. There were no Level 3 investments measured at fair value on a recurring basis. The fair values of financial assets and financial liabilities are determined as follows: 1) The fair values of financial assets and financial liabilities with standard terms and conditions and traded in active markets are determined with reference to quoted market prices. 2) For derivatives, fair values are estimated using discounted cash flow model. Future cash flows are estimated based on observable inputs including foreign exchange rates at the end of the reporting periods, and forward and spot exchange rates stated in the contracts, discounted at a rate that reflects the credit risk of various counterparties. |
Related Parties Transactions
Related Parties Transactions | 12 Months Ended |
Dec. 31, 2017 | |
Related Party Transactions [Abstract] | |
Related Parties Transactions | 40. RELATED PARTIES TRANSACTIONS The ROC Government, one of Chunghwa’s customers has significant equity interest in Chunghwa. Chunghwa provides fixed-line services, wireless services, internet and data and other services to the various departments and institutions of the ROC Government in the normal course of business and at arm’s-length prices. The transactions with the ROC government bodies have not been provided because the transactions are not individually or collectively significant. However, the related revenues and operating costs have been appropriately recorded. a. The Company engages in business transactions with the following related parties: Company Relationship Taiwan International Standard Electronics Co., Ltd. Associate So-net Entertainment Taiwan Limited Associate Skysoft Co., Ltd. Associate KingwayTek Technology Co., Ltd. Associate Dian Zuan Integrating Marketing Co., Ltd. Associate Taiwan International Ports Logistics Corporation Associate Huada Digital Corporation Joint venture Chunghwa Benefit One Co., Ltd. Joint venture International Integrated System, Inc. Associate Senao Networks, Inc. Associate EnGenius Tech. Co., Ltd. Associate HopeTech Technologies Limited Associate ST-2 Satellite Ventures Pte., Ltd. Associate Viettel-CHT Co., Ltd. Associate Click Force Co., Ltd. Associate 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 E-Life Mall Co., Ltd. One of the directors of E-Life Mall and a director of SENAO are members of an immediate family Engenius Technologies Co., Ltd. Chairman of Engenius Technologies Co., Ltd. is a member of SENAO’s management United Daily News Co., Ltd. Investor of significant influence over SFD Shenzhen Century Communication Co., Ltd. Investor of significant influence over SCT b. Balances and transactions between Chunghwa and its subsidiaries, which are related parties of Chunghwa, have been eliminated on consolidation and are not disclosed in this note. Terms of the foregoing transactions with related parties were not significantly different from transactions with non-related parties. When no similar transactions with non-related parties can be referenced, terms were determined in accordance with mutual agreements. Details of transactions between the Company and other related parties are disclosed below: 1) Operating transactions Revenues Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Associates $ 333 $ 292 $ 344 Joint ventures 9 7 1 Others 81 49 65 $ 423 $ 348 $ 410 Operating Costs and Expenses Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Associates $ 1,451 $ 1,405 $ 1,197 Joint ventures 17 17 2 Others 62 74 71 $ 1,530 $ 1,496 $ 1,270 2) Non-operating transactions Non-operating Income and Expenses Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Associates $ 36 $ 37 $ 32 Others — — — $ 36 $ 37 $ 32 3) Receivables December 31 2016 2017 NT$ NT$ (In Millions) Associates $ 9 $ 43 Joint ventures — — Others 5 6 $ 14 $ 49 4) Payables December 31 2016 2017 NT$ NT$ (In Millions) Associates $ 757 $ 680 Joint ventures 1 — Others 4 4 $ 762 $ 684 5) Customers’ deposits December 31 2016 2017 NT$ NT$ (In Millions) Associates $ 10 $ 6 Joint ventures 1 — $ 11 $ 6 6) Acquisition of property, plant and equipment Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Associates $ 314 $ 313 $ 390 Joint ventures 11 7 — $ 325 $ 320 $ 390 7) Prepayments Chunghwa entered into a contract with ST-2 Satellite Ventures Pte., Ltd. December 31 2016 2017 NT$ NT$ (In Millions) Prepaid rents - current $ 204 $ 204 Prepaid rents - noncurrent 1,755 1,551 $ 1,959 $ 1,755 c. Compensation of key management personnel The compensation of directors and other key management personnel for the years ended December 31, 2015, 2016 and 2017 were as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Short-term employee benefits $ 212 $ 251 $ 254 Post-employment benefits 9 8 9 Share-based payment 3 2 2 $ 224 $ 261 $ 265 The compensation of directors and other key management personnel was mainly determined by the compensation committee having regard to the performance of individual and market trends. |
Pledged Assets
Pledged Assets | 12 Months Ended |
Dec. 31, 2017 | |
Subclassifications Of Assets Liabilities And Equities [Abstract] | |
Pledged Assets | 41. PLEDGED ASSETS The following assets are pledged as collaterals for bank loans and custom duties of the imported materials. December 31 2016 2017 NT$ NT$ (In Millions) Property, plant and equipment $ 2,580 $ 2,550 Land held under development (included in inventories) 1,999 1,999 Restricted assets (included in other assets - others) 21 3 $ 4,600 $ 4,552 |
Significant Contingent Liabilit
Significant Contingent Liabilities and Unrecognized Commitments | 12 Months Ended |
Dec. 31, 2017 | |
Commitments And Contingencies [Abstract] | |
Significant Contingent Liabilities and Unrecognized Commitments | 42. SIGNIFICANT CONTINGENT LIABILITIES AND UNRECOGNIZED COMMITMENTS The Company’s significant contingent liabilities and recognized commitments, excluding those disclosed in other notes, were as follows: a. Acquisitions of land and buildings of $118 million as of December 31, 2017. b. Acquisitions of telecommunications equipment of $16,199 million as of December 31, 2017. c. Unused letters of credit amounting to $50 million as of December 31, 2017. d . A commitment to contribute $2,000 million to a Piping Fund administered by the Taipei City Government, of which $1,000 million was contributed by Chunghwa on August 15, 1996 (classified as other monetary assets - noncurrent). If the fund is not sufficient, Chunghwa will contribute the remaining $1,000 million upon notification from the Taipei City Government. e. CHPT signed the contract for its headquarters construction amounted to $1,614 million in July 2017. The payment of $98 million has been made as of March 31, 2018. |
Segment Information
Segment Information | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Operating Segments [Abstract] | |
Segment Information | 43. SEGMENT INFORMATION The Company has the following reportable segments that provide different products or services. The reportable segments are managed separately because each segment represents a strategic business unit that serves different markets. Segment information is provided to CEO who allocates resources and assesses segment performance. The Company’s measure of segment performance is mainly based on revenues and income before income tax. The Company’s reportable segments are as follows: a. Domestic fixed communications business - the provision of local telephone services, domestic long distance telephone services, broadband access, and related services; b. Mobile communications business - the provision of mobile services, sales of mobile handsets and data cards, and related services; c. Internet business - the provision of HiNet services and related services; d. International fixed communications business - the provision of international long distance telephone services and related services; e. Others - the provision of non-telecom services and the corporate related items not allocated to reportable segments. Some operating segments have been aggregated into a single operating segment taking into account the following factors: (a) similar economic characteristics such as long-term gross profit margins; (b) the nature of the telecommunications products and services are similar; (c) the nature of production processes of the telecommunications products and services are similar; (d) the type or class of customer for the telecommunications products and services are similar; and (e) the methods used to provide the services to the customers are similar. There was no material differences between the accounting policies of the operating segments and the accounting policies described in Note 3. a. Segment revenues and operating results Analysis by reportable segment of revenue and operating results of continuing operations was as follows: Domestic Fixed Communi- cations Business Mobile Communi- cations Business Internet Business International Fixed Communi- cations Business Others Total NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Year ended December 31, 2015 Revenues From external customers $ 72,535 $ 114,877 $ 25,777 $ 15,460 $ 3,146 $ 231,795 Intersegment revenues 21,401 3,475 4,701 2,120 3,214 34,911 Segment revenues $ 93,936 $ 118,352 $ 30,478 $ 17,580 $ 6,360 266,706 Intersegment elimination (34,911 ) Consolidated revenues $ 231,795 Segment income before income tax $ 23,231 $ 19,394 $ 9,918 $ 1,120 $ (1,710 ) $ 51,953 Year ended December 31, 2016 Revenues From external customers $ 72,784 $ 110,801 $ 28,100 $ 14,434 $ 3,872 $ 229,991 Intersegment revenues 22,669 2,530 4,734 2,680 4,122 36,735 Segment revenues $ 95,453 $ 113,331 $ 32,834 $ 17,114 $ 7,994 266,726 Intersegment elimination (36,735 ) Consolidated revenues $ 229,991 Segment income before income tax $ 25,658 $ 13,926 $ 10,729 $ 1,098 $ (1,998 ) $ 49,413 Year ended December 31, 2017 Revenues From external customers $ 71,137 $ 109,376 $ 28,917 $ 13,552 $ 4,532 $ 227,514 Intersegment revenues 22,515 2,031 4,209 2,375 4,600 35,730 Segment revenues $ 93,652 $ 111,407 $ 33,126 $ 15,927 $ 9,132 263,244 Intersegment elimination (35,730 ) Consolidated revenues $ 227,514 Segment income before income tax $ 24,888 $ 12,433 $ 11,118 $ 1,029 $ (1,459 ) $ 48,009 b. Other segment information Other information reviewed by the chief operating decision maker or regularly provided to the chief operating decision maker was as follows: For the year ended December 31, 2015 Domestic Fixed Communi-cations Business Mobile Communi-cations Business Internet Business International Fixed Communi-cations Business Others Total NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Share of the profit of associates and joint ventures accounted for using equity method $ — $ — $ — $ — $ 897 $ 897 Interest income $ 19 $ 19 $ 11 $ 2 $ 255 $ 306 Interest expenses $ — $ 10 $ — $ — $ 23 $ 33 Operating costs and expenses $ 64,960 $ 81,213 $ 12,062 $ 14,411 $ 8,683 $ 181,329 Depreciation and amortization $ 17,487 $ 10,444 $ 3,611 $ 1,536 $ 370 $ 33,448 Capital expenditure $ 10,196 $ 8,596 $ 4,795 $ 968 $ 529 $ 25,084 Impairment loss on property, plant and equipment $ 22 $ 116 $ — $ — $ — $ 138 Reversal of impairment loss on investment properties $ 142 $ — $ — $ — $ — $ 142 For the year ended December 31, 2016 Domestic Fixed Communi- cations Business Mobile Communi- cations Business Internet Business International Fixed Communi- cations Business Others Total NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Share of the profit of associates and joint ventures accounted for using equity method $ — $ — $ — $ — $ 515 $ 515 Interest income $ 15 $ 11 $ 7 $ 6 $ 150 $ 189 Interest expenses $ — $ 2 $ — $ — $ 18 $ 20 Operating costs and expenses $ 64,230 $ 79,593 $ 13,160 $ 14,313 $ 10,094 $ 181,390 Depreciation and amortization $ 16,414 $ 10,620 $ 3,626 $ 1,451 $ 374 $ 32,485 Capital expenditure $ 9,846 $ 8,981 $ 2,718 $ 1,136 $ 836 $ 23,517 Impairment loss on property, plant and equipment $ — $ 596 $ — $ — $ — $ 596 Reversal of impairment loss on investment properties $ 148 $ — $ — $ — $ — $ 148 For the year ended December 31, 2017 Domestic Fixed Communi- cations Business Mobile Communi- cations Business Internet Business International Fixed Communi- cations Business Others Total NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Share of the profit of associates and joint ventures accounted for using equity method $ — $ — $ — $ — $ 419 $ 419 Interest income $ 21 $ 15 $ 9 $ 15 $ 145 $ 205 Interest expenses $ — $ 6 $ — $ — $ 16 $ 22 Operating costs and expenses $ 62,795 $ 80,275 $ 13,288 $ 13,385 $ 10,963 $ 180,706 Depreciation and amortization $ 15,614 $ 11,001 $ 3,385 $ 1,477 $ 453 $ 31,930 Capital expenditure $ 11,647 $ 9,742 $ 2,779 $ 1,580 $ 1,127 $ 26,875 Impairment loss on property, plant and equipment $ — $ — $ — $ — $ — $ — Reversal of impairment loss on investment properties $ 11 $ — $ — $ — $ — $ 11 c. Main products and service revenues The following is an analysis of the Company’s revenue from its major products and services. Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Mobile services revenue $ 80,867 $ 78,788 $ 75,823 Local telephone and domestic long distance telephone services revenue 36,690 34,531 32,247 Sales of product 36,509 35,377 37,649 Broadband access and domestic leased line services revenue 23,711 23,315 22,950 Data communications internet services revenue 17,455 20,906 21,143 International network and leased telephone services revenue 11,319 10,634 9,328 Others 25,244 26,440 28,374 $ 231,795 $ 229,991 $ 227,514 d. Geographic information The users of the Company’s services are mainly from Taiwan, ROC. The revenues it derived outside Taiwan are mainly revenues from international long distance telephone and leased line services. The geographic information for revenues was as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Taiwan, ROC $ 220,917 $ 218,933 $ 217,568 Overseas 10,878 11,058 9,946 $ 231,795 $ 229,991 $ 227,514 The Company has long-lived assets in U.S., Singapore, Hong Kong, China, Vietnam, Japan, and Thailand and except for $3,947 million and $4,445 million as of December 31, 2016 and 2017, respectively, in the aforementioned areas, the other long-lived assets are located in Taiwan, ROC. e. Major customers For the years ended December 31, 2015, 2016 and 2017, the Company did not have any single customer whose revenue exceeded 10% of the total revenues. |
Summary of Significant Accoun49
Summary of Significant Accounting Policies (Policies) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Summary Of Significant Accounting Policies [Abstract] | |
Statement of Compliance | Statement of Compliance The accompanying consolidated financial statements have been prepared in conformity with International Financial Reporting Standards as issued by the International Accounting Standards Board (collectively, “IFRSs”). |
Basis of Preparation | Basis of Preparation The consolidated financial statements have been prepared on the historical cost basis except for certain financial instruments that are measured at fair values and net defined benefit liabilities (assets) which are measured at the present value of the defined benefit obligation less the fair value of plan assets. |
Current and Noncurrent Assets and Liabilities | Current and Noncurrent Assets and Liabilities Current assets include: a. Assets held primarily for the purpose of trading; b. Assets expected to be realized within twelve months after the reporting period; and c. Cash and cash equivalents unless the asset is restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period. Current liabilities include: a. Liabilities held primarily for the purpose of trading; b. Liabilities due to be settled within twelve months after the reporting period; and c. Liabilities for which the Company does not have an unconditional right to defer settlement for at least twelve months after the reporting period. Assets and liabilities that are not classified as current are classified as noncurrent. Light Era Development Co., Ltd. (LED) engages mainly in development of property for rent and sale. The assets and liabilities of LED related to property development within its operating cycle, which is over one year, are classified as current items. |
Basis of Consolidation | Basis of Consolidation a. Principles for preparing consolidated financial statements The consolidated financial statements incorporate the financial statements of Chunghwa and entities controlled by Chunghwa (its subsidiaries). Income and expenses of subsidiaries acquired during the period are included in the consolidated statements of comprehensive income from the acquisition date. When necessary, adjustments are made to the financial statements of subsidiaries to bring their accounting policies in line with those used by the Company. All inter-company transactions, balances, income and expenses are eliminated in full upon consolidation. Attribution of total comprehensive income to the noncontrolling interests Profit or loss and each component of other comprehensive income are attributed to the stockholders of the parent and to the noncontrolling interests. Total comprehensive income of subsidiaries is attributed to the stockholders of the parent and to the noncontrolling interests even if it results in the noncontrolling interests having a deficit balance. Changes in the Company’s ownership interests in subsidiaries Changes in the Company’s ownership interests in subsidiaries that do not result in the Company losing control over the subsidiaries are accounted for as equity transactions. The carrying amounts of the Company’s interests and the noncontrolling interests are adjusted to reflect the changes in their relative interests in the subsidiaries. Any difference between the amount by which the noncontrolling interests are adjusted and the fair value of the consideration paid or received is recognized directly in equity and attributed to stockholders of the parent. b. The subsidiaries in the consolidated financial statements 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 2016 2017 Note Chunghwa Telecom Co., Ltd. Senao International Co., Ltd. (“SENAO”) Handset and peripherals retailer; sales of CHT mobile phone plans as an agent 29 29 1) 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 69 67 2) CHYP Multimedia Marketing & Communications Co., Ltd. (“CHYP”) Digital information supply services and advertisement services 100 100 3) Prime Asia Investments Group Ltd. (B.V.I.) (“Prime Asia”) Investment 100 100 Spring House Entertainment Tech. Inc. (“SHE”) Digital entertainment contents production, animated character licensing and endorsement, and mobile digital platform construction 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”) Telecommunication 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 4) Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”) International private leased circuit, IP VPN service, ICT and cloud VAS services — 100 5) (Continued) Percentage of Ownership December 31 Name of Investor Name of Investee Main Businesses and Products 2016 2017 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 6) New Prospect Investments Holdings Ltd. (B.V.I.) (“New Prospect”) Investment 100 — 7) 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 89 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 8) 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 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 100 100 9) Spring House Entertainment Tech. Inc. Ceylon Innovation Co., Ltd. (“CEI”) E-book publishing and copyright negotiation of digital music — — 10) Chunghwa Investment Co., Ltd. Chunghwa Precision Test Tech. Co., Ltd. (“CHPT”) Production and sale of semiconductor testing components and printed circuit board 41 38 11) Chunghwa Investment Holding Co., Ltd. (“CIHC”) Investment — — 12) 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 100 — 13) 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 2016 2017 Note Chunghwa Investment Holding Co., Ltd. CHI One Investment Co., Limited (“COI”) Investment — — 14) Senao International HK Limited Senao Trading (Fujian) Co., Ltd. (“STF”) Sale of information and communication technologies products 100 100 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 100 100 15) Senao International Trading (Jiangsu) Co., Ltd. (“SITJ”) Sale of information and communication technologies products 100 100 17) 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 75 16) Chunghwa Precision Test Tech. International, Ltd. Shanghai Taihua Electronic Technology Limited (“STET”) Design of printed circuit board and related consultation service 100 100 (Concluded) 1 ) The Company owns 28.93% equity shares of SENAO. Chunghwa had originally four out of seven seats of the Board of Directors of SENAO through the support of large beneficial stockholders. In order to comply with the local regulations, SENAO increased two seats of independent directors in June 2016; therefore, total seats of its Board of Directors increased to nine and Chunghwa continues to hold four out of nine seats of the Board of Directors. As Chunghwa remains the control over SENAO’s relevant activities, the accounts of SENAO are included in the consolidated financial statements. 2) 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% 3) Chunghwa International Yellow Pages Co., Ltd changed its name to CHYP Multimedia Marketing & Communications Co., Ltd starting from September 4, 2017. 4) Chunghwa invested 75% equity shares of Chunghwa Leading Photonics Tech Co., Ltd. (“CLPT”) in July 2016. 5) Chunghwa invested 100% equity shares of Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”) in March 2017. 6) Chunghwa invested 80% equity shares of CHT Security Co., Ltd. (“CHTSC”) in December 2017. 7 ) New Prospect was approved to dissolve its business in April 2017. The liquidation of New Prospect was completed in May 2017. 8 ) SENAO invested 100% equity shares of SENYOUNG Insurance Agent Co., Ltd. (“SENYOUNG”) in November 2017. 9 ) Concord was approved to end and dissolve its business in August 2017. The liquidation of Concord was completed in January 2018. 10 ) CEI’s liquidation was completed in August 2016 and SHE received the proceeds from the liquidation. 11 ) CHI disposed of some shares of CHPT in March 2016. Furthermore, CHI did not participate in the capital increase of CHPT in March 2016 and September 2017. Therefore, its ownership interest in CHPT decreased to 38.30%. 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. 1 2 ) CIHC’s dissolution was approved in August 2016 and the liquidation was completed in September 2016. CHI received the proceeds from the liquidation. 1 3 ) GNSS (Shanghai) completed its liquidation in August 2017 and Concord received the proceeds from the liquidation. 1 4 ) COI completed its liquidation in July 2016 and CIHC received the proceeds from the liquidation. 1 5 ) SEITS was approved to end and dissolve its business in March 2017. The liquidation of SEITS was completed in March 2018. 1 6 ) JZIT was approved to end and dissolve its business in May 2016. The liquidation of JZIT is still in process. 1 7 ) SITJ was approved to end and dissolve its business in April 2018. The liquidation of SITJ is still in process. 1 8 ) LED invested 60% equity shares of Taoyuan Asia Silicon Valley Innovation Co., Ltd. (“TASVI”) in March 2018. The following diagram presents information regarding the relationship and ownership percentages between Chunghwa and its subsidiaries as of December 31, 2017: |
Business Combination | Business Combination Acquisitions of businesses are accounted for using the acquisition method. Acquisition-related costs are recognized in profit or loss as incurred. Goodwill is measured as the excess of the sum of the consideration transferred, the amount of any noncontrolling interests in the acquiree, and the fair value of the acquirer’s previously held equity interest in the acquiree over the net of the acquisition-date amounts of the identifiable assets acquired and the liabilities assumed. Noncontrolling interests that are present ownership interests and entitle their holders to a proportionate share of the entity’s net assets in the event of liquidation may be initially measured either at fair value or at the present ownership instruments’ proportionate share in the recognized amounts of the acquiree’s identifiable net assets. The choice of measurement basis is made on a transaction-by-transaction basis. Other types of noncontrolling interests are measured at fair value. If the initial accounting for a business combination is incomplete by the end of the reporting period in which the combination occurs, the Company reports its financial statements provisional amounts for the items for which the accounting is incomplete. During the measurement period, the Company retrospectively adjusts the provisional amounts recognized at the acquisition date or recognizes additional assets or liabilities to reflect new information obtained about facts and circumstances that existed as of the acquisition date and if known, would have affected the measurement of the amounts recognized as of that date. |
Foreign Currencies | Foreign Currencies In preparing the financial statements of each individual entity, transactions in currencies other than the entity’s functional currency (foreign currencies) are recognized at the rates of exchange prevailing at the dates of the transactions. At the end of each reporting period, monetary items denominated in foreign currencies are retranslated at the rates prevailing at that date. Exchange differences on monetary items arising from settlement or translation denominated in foreign currencies are recognized in profit or loss in the period in which they arise. Non-monetary items carried at fair value that are denominated in foreign currencies are retranslated at the rates prevailing at the date when the fair value was determined and related exchange differences are recognized in profit or loss. Conversely, when the fair value changes were recognized in other comprehensive income, related exchange difference shall be recognized in other comprehensive income. Non-monetary items that are measured at historical cost in a foreign currency are not retranslated. Chunghwa uses New Taiwan dollars (NT$) as the functional currency. For the purposes of presenting consolidated financial statements, the assets and liabilities of the Company’s foreign operations (including of the subsidiaries and associates in other countries or currencies used different with Chunghwa) are translated into New Taiwan dollars using exchange rates prevailing at the end of each reporting period. Income and expense items are translated at the average exchange rates for the period. Exchange differences arising, if any, are recognized in other comprehensive income and attributed to stockholders of the parent and noncontrolling interests as appropriate. |
Cash Equivalents | Cash Equivalents Cash equivalents include commercial paper, time deposits and negotiable certificate of deposit with original maturities within three months from the date of acquisition, highly liquid, readily convertible to a known amount of cash and are subject to an insignificant risk of changes in value. These cash equivalents are held for the purpose of meeting short-term cash commitments. |
Inventories | Inventories Inventories are stated at the lower of cost or net realizable value item by item, except for those that may be appropriate to group items of similar or related inventories. Net realizable value is the estimated selling price of inventories less all estimated costs of completion and costs necessary to make the sale. The calculation of the cost of inventory is derived using the weighted-average method. |
Buildings and Land Consigned to Construction Contractors | Buildings and Land Consigned to Construction Contractors Inventories of LED are stated at the lower of cost or net realizable value item by item, except for those that may be appropriate to group as similar items or related inventories. Land acquired before construction is classified as land held for development, and then reclassified as land held under development after LED begins its construction project. When using the completed-contract method for its construction projects, LED recognizes the proceeds from customers as advances from customers for land and building before the construction project is completed. After completion of the construction project and ownership is transferred to the customers, LED recognizes the relevant revenues. |
Investments in Associates and Joint Ventures | Investments in Associates and Joint Ventures An associate is an entity over which the Company has significant influence and that is neither a subsidiary nor an interest in a joint venture. A joint venture is a joint arrangement whereby the Company and other parties that have joint control of the arrangement have rights to the net assets of the arrangement. Investments accounted for using the equity method include investments in associates and interests in joint ventures. Under the equity method, an investment in an associate or a joint venture is initially recognized at cost and adjusted thereafter to recognize the Company’s share of profit or loss and other comprehensive income of the associate and joint venture as well as the distribution received. When the Company reduces its ownership interest in an associate or a joint venture but the Company continues to use the equity method, the Company reclassifies to profit or loss the proportion of the gain or loss that had previously been recognized in other comprehensive income relating to that reduction in ownership interest if that gain or loss would be reclassified to profit or loss on the disposal of the related assets or liabilities. Any excess of the cost of acquisition over the Company’s share of the fair value of the identifiable net assets and liabilities of an associate or a joint venture at the date of acquisition is recognized as goodwill, which is included within the carrying amount of the investment and shall not be amortized. Any excess of the Company’s share of the net fair value of the identifiable assets and liabilities over the cost of acquisition is recognized immediately in profit or loss. When necessary, the entire carrying amount of the investment (including goodwill) is tested for impairment as a single asset by comparing its recoverable amount with its carrying amount. Any impairment loss recognized forms part of the carrying amount of the investment. Any reversal of that impairment loss is recognized to the extent that the recoverable amount of the investment subsequently increases. When the Company transacts with its associate and joint venture, profits and losses resulting from the transactions with the associate and joint venture are recognized in the Company’s consolidated financial statements only to the extent of interests in the associate and joint venture that are not related to the Company. |
Property, Plant and Equipment | Property, Plant and Equipment Property, plant and equipment are initially measured at cost and subsequently measured at cost less accumulated depreciation and accumulated impairment loss. Depreciation on property, plant and equipment is recognized using the straight-line method. Each significant part is depreciated separately. The estimated useful lives, residual values and depreciation method are reviewed at the end of each year, with the effect of any changes in estimate accounted for on a prospective basis. On derecognition of an item of property, plant and equipment, the difference between the net disposal proceeds and the carrying amount of the asset is recognized in profit or loss in the period in which the property is derecognized. |
Investment Properties | Investment Properties Investment properties are properties held to earn rentals and/or for capital appreciation. Investment properties also include land held for a currently undetermined future use. Investment properties are measured initially at cost, including transaction costs. Subsequent to initial recognition, investment properties are measured at cost less accumulated depreciation and accumulated impairment loss. Depreciation is recognized using the straight-line method. On derecognition of the investment properties, the difference between the net disposal proceeds and the carrying amount of the asset is recognized in profit or loss in the period in which the property is derecognized. |
Goodwill | Goodwill Goodwill arising from the acquisition of a business is carried at cost as established at the date of acquisition of the business less accumulated impairment loss. For the purpose of impairment testing, goodwill is allocated to each of the Company’s cash-generating units or groups of cash-generating units (referred to as “cash-generating unit”) that are expected to benefit from the synergies of the business combination. A cash-generating unit to which goodwill has been allocated is tested for impairment annually, or more frequently when there is an indication that the unit may be impaired, by comparing its carrying amount, including the attributable goodwill, with its recoverable amount. However, if the goodwill allocated to a cash-generating unit was acquired in a business combination during the current annual period, that unit shall be tested for impairment before the end of the current annual period. |
Intangible Assets Other Than Goodwill | Intangible Assets Other Than Goodwill Intangible assets with finite useful lives that are acquired separately Intangible assets acquired in a business combination and recognized separately from goodwill are initially recognized at their fair value at the acquisition date (which is regarded as their cost). Subsequent to initial recognition, they are measured on the same basis as intangible assets that are acquired separately. Gains or losses arising from derecognition of an intangible asset, measured as the difference between the net disposal proceeds and the carrying amount of the asset, are recognized in profit or loss in the period in which the asset is derecognized. |
Impairment of Tangible and Intangible Assets Other Than Goodwill | Impairment of Tangible and Intangible Assets Other Than Goodwill At the end of each reporting period, the Company reviews the carrying amounts of its tangible and intangible assets, excluding goodwill, to determine whether there is any indication that those assets have suffered an impairment loss. If any such indication exists, the recoverable amount of the asset is estimated in order to determine the extent of the impairment loss. When it is not possible to estimate the recoverable amount of an individual asset, the Company estimates the recoverable amount of the cash-generating unit to which the asset belongs. Intangible assets with indefinite useful lives and intangible assets not yet available for use are tested for impairment at least annually, and whenever there is an indication that the asset may be impaired. Recoverable amount is the higher of fair value less costs to sell and value in use. If the recoverable amount of an asset or cash-generating unit is estimated to be less than its carrying amount, the carrying amount of the asset or cash-generating unit is reduced to its recoverable amount, with the resulting impairment loss recognized in profit or loss. When an impairment loss is subsequently reversed, the carrying amount of the asset or cash-generating unit is increased to the revised estimate of its recoverable amount, but only to the extent of the carrying amount that would have been determined had no impairment loss been recognized for the asset or cash-generating unit in prior years. A reversal of an impairment loss is recognized in profit or loss. |
Financial Instruments | Financial Instruments Financial assets and financial liabilities are recognized when the Company becomes a party to the contractual provisions of the instruments. Financial assets and financial liabilities are initially measured at fair value. Transaction costs that are directly attributable to the acquisition or issue of financial assets and financial liabilities (other than financial assets and financial liabilities at fair value through profit or loss) are added to or deducted from the fair value of the financial assets or financial liabilities, as appropriate, on initial recognition. Transaction costs directly attributable to the acquisition of financial assets or financial liabilities at fair value through profit or loss are recognized immediately in profit or loss. a. Financial assets All regular way purchases or sales of financial assets are recognized and derecognized on a trade date basis. The regular way of transaction means the purchase or sale of financial assets delivered within the time frame established by regulation or convention in the marketplace. 1) Measurement category a) Financial assets at fair value through profit and loss (FVTPL) Financial assets are classified as at FVTPL when the financial asset is held for trading. Financial assets at FVTPL are stated at fair value, with any gains or losses arising on remeasurement recognized in profit or loss. The net gain or loss recognized in profit or loss does not incorporate any dividend or interest earned on the financial asset. b) Held-to-maturity financial assets Held-to-maturity financial assets are non-derivative financial assets with fixed or determinable payments and fixed maturity date that the Company has positive intention and ability to hold to maturity other than those that are designated as at fair value through profit or loss or as available-for-sale and those that meet the definition of loans and receivables on initial recognition. The Company invests in bank debentures and corporate bonds with specific credit ratings and the Company has positive intent and ability to hold to maturity, are classified as held-to-maturity investments. Subsequent to initial recognition, held-to-maturity financial assets are measured at amortized cost using the effective interest method less any impairment loss. c) Available-for-sale financial assets (AFS financial assets) AFS financial assets are non-derivatives that are either designated as AFS or are not classified as loans and receivables, held-to-maturity financial assets or financial assets at fair value through profit or loss. The Company invests in listed stocks, emerging market stocks, and unlisted stocks. Among these investments, those that have a quoted market price in an active market are classified as AFS and measured at fair value at the end of each reporting period; the others that do not have a quoted market price in an active market and whose fair value cannot be reliably measured are measured at cost less any identified impairment losses at the end of each reporting period. If, in a subsequent period, the fair value of the financial assets can be reliably measured, the financial assets are remeasured at fair value. The difference between the carrying amount and the fair value is recognized in other comprehensive income. Any impairment losses are recognized in profit or loss. Changes in the carrying amount of AFS monetary financial assets relating to changes in foreign currency exchange rates, interest income calculated using the effective interest method and dividends on AFS equity investments are recognized in profit or loss. Other changes in the carrying amount of AFS financial assets are recognized in other comprehensive income and will be reclassified to profit or loss when the investment is disposed of or is determined to be impaired. Dividends on AFS equity instruments are recognized in profit or loss when the Company’s right to receive the dividends is established. d) Loans and receivables Loans and receivables are non-derivative financial assets with fixed or determinable payments that are not quoted in an active market. Loans and receivables (including cash and cash equivalents, trade notes and accounts receivable, receivables from related parties, other financial assets and refundable deposits) are measured at amortized cost using the effective interest method, less any impairment loss, except for short-term receivables as the effect of discounting is immaterial. 2) Impairment of financial assets Financial assets, other than those at FVTPL, are assessed to determine whether there is objective evidence that an impairment loss has occurred at the end of each reporting period. Financial assets are considered to be impaired when there is objective evidence that, as a result of one or more events that occurred after the initial recognition of the financial asset, the estimated future cash flows of the investment have been affected. For financial assets carried at amortized cost, such as held-to-maturity financial assets, and trade notes and accounts receivable, assets that are individually assessed and not impaired are, in addition, assessed for impairment on a collective basis. For financial assets carried at amortized cost, the amount of the impairment loss recognized is mainly based on the difference between the asset’s carrying amount and the present value of estimated future cash flows, discounted at the financial asset’s original effective interest rate. However, since the discounted effect of short-term receivables is immaterial, the impairment loss is recognized on the difference between carrying amount and estimated future cash flow. For financial assets measured at amortized cost, if, in a subsequent period, the amount of the impairment loss decreases and the decrease can be related objectively to an event occurring after the impairment was recognized, the previously recognized impairment loss is reversed through profit or loss to the extent that the carrying amount of the investment at the date the impairment is reversed does not exceed what the amortized cost would have been had the impairment not been recognized. For AFS equity investments, a significant or prolonged decline in the fair value of the security below its cost is considered to be objective evidence of impairment. When an AFS financial asset is considered to be impaired, cumulative gains or losses previously recognized in other comprehensive income are reclassified to profit or loss in the period. In respect of AFS equity securities, impairment losses previously recognized in profit or loss are not reversed through profit or loss. Any increase in fair value subsequent to an impairment loss is recognized in other comprehensive income. For financial assets that are carried at cost, the amount of the impairment loss is mainly measured as the difference between the asset’s carrying amount and the present value of the estimated future cash flows discounted at the current market rate of return for a similar financial asset. Such impairment loss is not reversed in subsequent periods. The carrying amount of the financial asset is reduced by the impairment loss directly for all financial assets with the exception of trade notes and accounts receivable and other receivables, where the carrying amount is reduced through the use of an allowance account. When a trade note and accounts receivable and other receivables are considered uncollectible, it is written off against the allowance account. Subsequent recoveries of amounts previously written off are credited against the allowance account. Changes in the carrying amount of the allowance account are recognized in profit or loss except for uncollectible trade notes and accounts receivable and other receivables that are written off against the allowance account. 3) Derecognition of financial assets The Company derecognizes a financial asset only when the contractual rights to the cash flows from the asset expire, or when it transfers the financial asset and substantially all the risks and rewards of ownership of the asset to another entity. On derecognition of a financial asset in its entirety, the difference between the asset’s carrying amount and the sum of the consideration received and receivable and the cumulative gain or loss that had been recognized in other comprehensive income is recognized in profit or loss. b . Financial liabilities 1) Subsequent measurement Except for financial liabilities at FVTPL, all the financial liabilities are subsequently measured at amortized cost using the effective interest method. 2) Derecognition of financial liabilities The Company derecognizes financial liabilities when, and only when, the Company’s obligations are discharged, cancelled or they expire. The difference between the carrying amount of the financial liability derecognized and the consideration paid and payable, including any non-cash assets transferred or liabilities assumed, is recognized in profit or loss. c . Derivative financial instruments The Company enters into a variety of derivative financial instruments to manage its exposure to foreign exchange rate risks, including forward exchange contracts. Derivatives are initially measured at fair value at the date the derivative contracts are entered into and are subsequently remeasured to their fair value at the end of each reporting period. The resulting gain or loss is recognized in profit or loss immediately unless the derivative is designated and effective as a hedging instrument, in which event the timing of the recognition in profit or loss depends on the nature of the hedge relationship. When the fair value of derivative financial instruments is positive, the derivative is recognized as a financial asset; when the fair value of derivative financial instruments is negative, the derivative is recognized as a financial liability. |
Hedge Accounting | Hedge Accounting The Company designates some derivatives instruments as cash flow hedges. Hedges of foreign exchange risk on firm commitments are accounted for as cash flow hedges. The effective portion of changes in the fair value of derivatives that are designated and qualify as cash flow hedges is recognized in other comprehensive income. The gain or loss relating to the ineffective portion is recognized immediately in profit or loss. The associated gains or losses that were recognized in other comprehensive income are reclassified from equity to profit or loss as a reclassification adjustment in the line item relating to the hedged item in the same period when the hedged item affects profit or loss. If a hedge of a forecast transaction subsequently results in the recognition of a non-financial asset or a non-financial liability, the associated gains and losses that were recognized in other comprehensive income are removed from equity and are included in the initial cost of the non-financial asset or non-financial liability. Hedge accounting is discontinued prospectively when the Company revokes the designated hedging relationship, or when the hedging instrument expires or is sold, terminated, or exercised, or when it no longer meets the criteria for hedge accounting. The cumulative gain or loss on the hedging instrument that has been previously recognized in other comprehensive income from the period when the hedge was effective remains separately in equity until the forecast transaction occurs. When a forecast transaction is no longer expected to occur, the gain or loss accumulated in equity is recognized immediately in profit or loss. |
Provisions | Provisions Provisions are measured at the best estimate of the expenditure required to settle the Company’s obligation at the end of the reporting period, taking into account the risks and uncertainties surrounding the obligation. The provisions for warranties claims and trade-in right are made by management according to the sales agreements which represent the management’s best estimate of the future outflow of economic benefits. The provisions of warranties claims and trade-in right are recognized as operating cost and the reduction of revenue, respectively, in the period in which the goods are sold. |
Revenue Recognition | Revenue Recognition Revenue from the sale of goods is recognized when all the following conditions are satisfied: a. The Company has transferred to the buyer the significant risks and rewards of ownership of the goods; b. The Company retains neither continuing managerial involvement to the degree usually associated with ownership nor effective control over the goods sold; c. The amount of revenue can be measured reliably; d. It is probable that the economic benefits associated with the transaction will flow to the Company; and e. The costs incurred or to be incurred in respect of the transaction can be measured reliably. Revenue is measured at the fair value of the consideration received or receivable and represents amounts for goods sold in the normal course of business, net of sales discounts and volume rebates. For trade notes and accounts receivable due within one year from the balance sheet date, as the nominal value of the consideration to be received approximates its fair value and transactions are frequent, fair value of the consideration is not determined by discounting all future receipts using an imputed rate of interest. Usage revenues from fixed-line services (including local, domestic long distance and international long distance telephone services), cellular services, Internet and data services, and interconnection and call transfer fees from other telecommunications companies and carriers are billed in arrears and are recognized based upon seconds or minutes of traffic processed when the services are provided in accordance with contract terms. Other revenues are recognized as follows: (a) one-time subscriber connection fees (on fixed-line services) are deferred and recognized over the average expected customer service periods, (b) monthly fees (on fixed-line services, mobile, Internet and data services) are accrued every month, and (c) prepaid services (fixed-line, mobile, Internet and data services) are recognized as income based upon actual usage by customers. Where the Company enters into transactions which involve both the provision of telecommunications service bundled with products such as handsets, total consideration received from products and telecommunications service in these arrangements are allocated and measured using units of accounting within the arrangement based on their relative fair values limited to the amount paid by the customer for the products. Revenue from a contract to provide services is recognized by reference to the stage of completion of the contract. Dividend income from investments is recognized when the stockholder’s right to receive payment has been established under the premises when it is probable that the economic benefit related to the transactions will flow to the Company and that the revenue can be reasonably measured. Interest income from a financial asset is recognized when it is probable that the economic benefits related to the transactions will flow to the Company and the amount of income can be measured reliably. Interest income is accrued on a time basis, by reference to the principal outstanding and at the effective interest rate applicable. When another party is involved in providing goods or services to a customer, the Company is acting as a principal when it has exposure to the significant risks and rewards associated with the sale of goods or the rendering of services; otherwise, the Company is acting as an agent. When the Company is acting as a principal, gross inflows of economic benefits arising from transactions is recognized as revenue. When the Company is acting as an agent, revenue is recognized in the amount of commission. |
Leasing | Leasing a. The Company as lessor Rental income from operating leases is recognized on a straight-line basis over the term of the relevant lease. b. The Company as lessee Operating lease payments are recognized as an expense on a straight-line basis over the lease term. |
Borrowing Costs | Borrowing Costs Borrowing costs directly attributable to the acquisition, construction or production of qualifying assets, are added to the cost of those assets, until such time as the assets are substantially ready for their intended use or sale. Other than stated above, all other borrowing costs are recognized in profit or loss in the period in which they are incurred. |
Employee Benefits | Employee Benefits a. Short-term employee benefits Liabilities recognized in respect of short-term employee benefits are measured at the undiscounted amount of the benefits expected to be paid in exchange for the related service. b. Retirement benefits Payments to defined contribution retirement benefit plans are recognized as an expense when employees have rendered service entitling them to the contributions. Defined benefit costs (including service cost, net interest and remeasurement) under the defined benefit retirement benefit plans are determined using the projected unit credit method. Service cost (including current service cost and gains or losses on settlements) and net interest on the net defined benefit liability (asset) are recognized as employee benefits expense in the period they occur. Remeasurement, comprising (a) actuarial gains and losses; and (b) the return on plan assets, excluding amounts included in net interest on the net defined benefit liability (asset), is recognized in other comprehensive income in the period in which they occur. Remeasurement recognized in other comprehensive income is reflected immediately in retained earnings and will not be reclassified to profit or loss. Net defined benefit liability (asset) represents the actual deficit (surplus) in the Company’s defined benefit plan. Any surplus resulting from this calculation is limited to the present value of any refunds from the plans or reductions in future contributions to the plans. c. Other long-term employee benefits Other long-term employee benefits are accounted for in the same way as the accounting required for defined benefit plan except that remeasurement is recognized in profit or loss. |
Share-based Payment Arrangements - Employee Stock Options | Share-based Payment Arrangements - Employee Stock Options The fair value determined at the grant date of the employee share options is expensed on a straight-line basis over the vesting period, based on the Company’s estimate of employee stock options that are expected to ultimately vest, with a corresponding increase in additional paid-in capital - employee stock options. If the equity instruments granted vest immediately at the grant date, expenses are recognized in full in profit or loss. At the end of each reporting period, the Company revises its estimate of the number of employee share options expected to vest. The impact of the revision of the original estimates is recognized in profit or loss such that the cumulative expense reflects the revised estimate, with a corresponding adjustment to additional paid-in capital - employee stock options. |
Income Tax | Income Tax Income tax expense represents the sum of the tax currently payable and deferred tax. a. Current tax The current tax is based on taxable profit for the year. Taxable profit differs from profit as reported in the consolidated statement of comprehensive income because of items of income or expense that are taxable or deductible in other years and items that are never taxable or deductible. The Company’s liability for current tax is calculated using tax rates that have been enacted or substantively enacted by the end of the reporting period. Income tax (10%) on undistributed earnings is accrued during the period the earnings arise and adjusted to the extent that distributions are approved by the stockholders in the following year. Adjustments of prior years’ tax liabilities are added to or deducted from the current year’s tax provision. b. Deferred tax Deferred tax is recognized on temporary differences between the carrying amounts of assets and liabilities in the consolidated financial statements and the corresponding tax bases used in the computation of taxable profit. If the temporary difference arises from the initial recognition (other than in a business combination) of assets and liabilities in a transaction that affects neither the taxable profit nor the accounting profit, the resulting deferred tax asset or liability is not recognized. In addition, a deferred tax liability is not recognized on taxable temporary difference arising from initial recognition of goodwill. Deferred tax liabilities are generally recognized for all taxable temporary differences. Deferred tax assets are generally recognized for all deductible temporary differences, unused loss carry forward and unused tax credits from purchases of machinery, equipment and technology, and research and development expenditures to the extent that it is probable that taxable profits will be available against which those deductible temporary differences can be utilized. Deferred tax liabilities are recognized for taxable temporary differences associated with investments in subsidiaries and associates, and interests in joint ventures, except where the Company is able to control the reversal of the temporary difference and it is probable that the temporary difference will not reverse in the foreseeable future. Deferred tax assets arising from deductible temporary differences associated with such investments and interests are only recognized to the extent that it is probable that there will be sufficient taxable profits against which to utilize the benefits of the temporary differences and they are expected to reverse in the foreseeable future. The carrying amount of deferred tax assets is reviewed at the end of each reporting period and reduced to the extent that it is no longer probable that sufficient taxable profits will be available to allow all or part of the asset to be recovered. A previously unrecognized deferred tax asset is also reviewed at the end of each reporting period and recognized to the to the extent that it has become probable that future taxable profit will allow the deferred tax asset to be recovered. Deferred tax assets and liabilities are measured at the tax rates that are expected to apply in the period in which the liability is settled or the asset realized, based on tax rates (and tax laws) that have been enacted or substantively enacted by the end of the reporting period. The measurement of deferred tax assets and liabilities reflects the tax consequences that would follow from the manner in which the Company expects, at the end of the reporting period, to recover or settle the carrying amount of its assets and liabilities. c. Current and deferred tax Current and deferred tax are recognized in profit or loss, except when they relate to items that are recognized in other comprehensive income, in which case, the current and deferred tax are also recognized in other comprehensive income. Where current tax or deferred tax arises from the initial accounting for a business combination, the tax effect is included in the accounting for the business combination. |
Summary of Significant Accoun50
Summary of Significant Accounting Policies (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Significant Investments In Subsidiaries [Abstract] | |
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 2016 2017 Note Chunghwa Telecom Co., Ltd. Senao International Co., Ltd. (“SENAO”) Handset and peripherals retailer; sales of CHT mobile phone plans as an agent 29 29 1) 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 69 67 2) CHYP Multimedia Marketing & Communications Co., Ltd. (“CHYP”) Digital information supply services and advertisement services 100 100 3) Prime Asia Investments Group Ltd. (B.V.I.) (“Prime Asia”) Investment 100 100 Spring House Entertainment Tech. Inc. (“SHE”) Digital entertainment contents production, animated character licensing and endorsement, and mobile digital platform construction 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”) Telecommunication 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 4) Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”) International private leased circuit, IP VPN service, ICT and cloud VAS services — 100 5) (Continued) Percentage of Ownership December 31 Name of Investor Name of Investee Main Businesses and Products 2016 2017 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 6) New Prospect Investments Holdings Ltd. (B.V.I.) (“New Prospect”) Investment 100 — 7) 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 89 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 8) 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 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 100 100 9) Spring House Entertainment Tech. Inc. Ceylon Innovation Co., Ltd. (“CEI”) E-book publishing and copyright negotiation of digital music — — 10) Chunghwa Investment Co., Ltd. Chunghwa Precision Test Tech. Co., Ltd. (“CHPT”) Production and sale of semiconductor testing components and printed circuit board 41 38 11) Chunghwa Investment Holding Co., Ltd. (“CIHC”) Investment — — 12) 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 100 — 13) 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 2016 2017 Note Chunghwa Investment Holding Co., Ltd. CHI One Investment Co., Limited (“COI”) Investment — — 14) Senao International HK Limited Senao Trading (Fujian) Co., Ltd. (“STF”) Sale of information and communication technologies products 100 100 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 100 100 15) Senao International Trading (Jiangsu) Co., Ltd. (“SITJ”) Sale of information and communication technologies products 100 100 17) 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 75 16) Chunghwa Precision Test Tech. International, Ltd. Shanghai Taihua Electronic Technology Limited (“STET”) Design of printed circuit board and related consultation service 100 100 (Concluded) 1 ) The Company owns 28.93% equity shares of SENAO. Chunghwa had originally four out of seven seats of the Board of Directors of SENAO through the support of large beneficial stockholders. In order to comply with the local regulations, SENAO increased two seats of independent directors in June 2016; therefore, total seats of its Board of Directors increased to nine and Chunghwa continues to hold four out of nine seats of the Board of Directors. As Chunghwa remains the control over SENAO’s relevant activities, the accounts of SENAO are included in the consolidated financial statements. 2) 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% 3) Chunghwa International Yellow Pages Co., Ltd changed its name to CHYP Multimedia Marketing & Communications Co., Ltd starting from September 4, 2017. 4) Chunghwa invested 75% equity shares of Chunghwa Leading Photonics Tech Co., Ltd. (“CLPT”) in July 2016. 5) Chunghwa invested 100% equity shares of Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”) in March 2017. 6) Chunghwa invested 80% equity shares of CHT Security Co., Ltd. (“CHTSC”) in December 2017. 7 ) New Prospect was approved to dissolve its business in April 2017. The liquidation of New Prospect was completed in May 2017. 8 ) SENAO invested 100% equity shares of SENYOUNG Insurance Agent Co., Ltd. (“SENYOUNG”) in November 2017. 9 ) Concord was approved to end and dissolve its business in August 2017. The liquidation of Concord was completed in January 2018. 10 ) CEI’s liquidation was completed in August 2016 and SHE received the proceeds from the liquidation. 11 ) CHI disposed of some shares of CHPT in March 2016. Furthermore, CHI did not participate in the capital increase of CHPT in March 2016 and September 2017. Therefore, its ownership interest in CHPT decreased to 38.30%. 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. 1 2 ) CIHC’s dissolution was approved in August 2016 and the liquidation was completed in September 2016. CHI received the proceeds from the liquidation. 1 3 ) GNSS (Shanghai) completed its liquidation in August 2017 and Concord received the proceeds from the liquidation. 1 4 ) COI completed its liquidation in July 2016 and CIHC received the proceeds from the liquidation. 1 5 ) SEITS was approved to end and dissolve its business in March 2017. The liquidation of SEITS was completed in March 2018. 1 6 ) JZIT was approved to end and dissolve its business in May 2016. The liquidation of JZIT is still in process. 1 7 ) SITJ was approved to end and dissolve its business in April 2018. The liquidation of SITJ is still in process. 1 8 ) LED invested 60% equity shares of Taoyuan Asia Silicon Valley Innovation Co., Ltd. (“TASVI”) in March 2018. |
Application of New and Amende51
Application of New and Amended International Financial Reporting Standards (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Description Of Expected Impact Of Initial Application Of New Standards Or Interpretations [Abstract] | |
Schedule of Anticipated Significant Impact on Assets, Liabilities and Equity When Retrospectively Applying IRFS 15 | The anticipated significant impact on assets, liabilities and equity when retrospectively applying IFRS 15 on January 1, 2018 is showed as follows (The following table only disclosed the summary of differences arising from recognitions and measurements. The differences arising from presentations are not included.): Carrying Amount as of December 31, 2017 Adjustments Arising from Initial Application of IFRS 15 Adjusted Carrying Amount as of January 1, 2018 NT$ NT$ NT$ (In Millions) Contract assets - current $ — $ 6,998 $ 6,998 Contract assets - noncurrent $ — 3,917 $ 3,917 Incremental costs to obtain a contract $ — 2,467 $ 2,467 Total effect on assets $ 13,382 Contract liability - current $ — $ 197 $ 197 Contract liability - noncurrent $ — 86 $ 86 Current tax liabilities $ 8,674 2,227 $ 10,901 Total effect on liabilities $ 2,510 Total effect on equity (unappropriated earnings) $ 54,633 $ 10,872 $ 65,505 |
Schedule of Anticipated Significant Impact on Assets, Liabilities and Equity of Retrospective Application of IFRS 9 | The anticipated significant impact on assets, liabilities and equity of retrospective application of the IFRS 9 on January 1, 2018 is set out below: Carrying Amount as of December 31, 2017 Adjustments Arising from Initial Application of IFRS 9 Adjusted Carrying Amount as of January 1, 2018 NT$ NT$ NT$ (In Millions) Impact on assets, liabilities and equity Financial assets at fair value through profit or loss - noncurrent $ — $ 54 $ 54 Financial assets at fair value through other comprehensive income - noncurrent $ — 7,539 $ 7,539 Available-for-sale financial assets - noncurrent $ 5,751 (5,751 ) $ — Total effect on assets $ 1,842 Total effect on liabilities (deferred income tax liabilities) $ 1,430 $ (1 ) $ 1,429 Unrealized gain or loss on available-for-sale financial assets $ 558 $ (558 ) $ — Unrealized gain or loss on financial assets at fair value through other comprehensive income $ — 883 $ 883 Unappropriated earnings $ 54,633 1,522 $ 56,155 Noncontrolling interests $ 8,474 (4 ) $ 8,470 Total effect on equity $ 1,843 |
Cash and Cash Equivalents (Tabl
Cash and Cash Equivalents (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Cash And Cash Equivalents [Abstract] | |
Summary of Cash and Cash Equivalents | December 31 2016 2017 NT$ NT$ (In Millions) Cash Cash on hand $ 370 $ 383 Bank deposits 7,240 7,877 7,610 8,260 Cash equivalents (investments with maturities of less than three months) Commercial paper $ 11,436 $ 10,179 Negotiable certificate of deposit 10,800 7,950 Time deposits 1,254 2,436 23,490 20,565 $ 31,100 $ 28,825 |
Annual Yield Rates of Bank Deposits, Commercial Paper, Negotiable Certificate of Deposit and Time Deposits | The annual yield rates of bank deposits, commercial paper, negotiable certificate of deposit and time deposits as of balance sheet dates were as follows: December 31 2016 2017 Bank deposits 0.00%-0.42% 0.00%-0.70% Commercial paper 0.32%-0.42% 0.32%-0.40% Negotiable certificate of deposit 0.35%-0.50% 0.40%-0.50% Time deposits 0.40%-3.30% 0.52%-4.40% |
Financial Instruments at Fair53
Financial Instruments at Fair Value Through Profit or Loss (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Financial Instruments [Abstract] | |
Summary of Financial Instruments at Fair Value through Profit or Loss | December 31 2016 2017 NT$ NT$ (In Millions) Financial assets held for trading Derivatives (not designated for hedge) Forward exchange contracts $ — $ — Financial liabilities held for trading Derivatives (not designated for hedge) Forward exchange contracts $ 1 $ 1 |
Outstanding Forward Exchange Contracts Not Designated for Hedge | Outstanding forward exchange contracts not designated for hedge as of balance sheet dates were as follows: Maturity Contract Amount Currency Period (In Millions) December 31, 2016 Forward exchange contracts - buy EUR/NT$ 2017.03 EUR5/NT$167 Forward exchange contracts - buy US$/NT$ 2017.01 US$2/NT$55 December 31, 2017 Forward exchange contracts - buy EUR/NT$ 2018.03-06 EUR2/NT$69 Forward exchange contracts - buy US$/NT$ 2018.01 US$4/NT$125 |
Financial Assets (Tables)
Financial Assets (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Financial Assets [Abstract] | |
Summary of Available-for-sale Financial Assets Non Current | December 31 2016 2017 NT$ NT$ (In Millions) Equity securities Domestic listed stocks $ 2,521 $ 3,125 Domestic non-listed stocks 1,949 2,332 Foreign non-listed stocks 294 294 $ 4,764 $ 5,751 |
Held-To-Maturity Financial As55
Held-To-Maturity Financial Assets - Current (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Financial Assets [Abstract] | |
Summary of Held-to-maturity Financial Assets Current and Related Information | December 31 2016 2017 NT$ NT$ (In Millions) Corporate bonds $ 1,990 $ — Bank debentures 150 — $ 2,140 $ — The related information of corporate bonds and bank debentures as of balance sheet dates was as follows: December 31 2016 2017 NT$ NT$ (In Millions) Corporate bonds Par value $ 1,990 $ — Nominal interest rate 1.18%-1.35% — Effective interest rate 1.20%-1.35% — Average remaining maturity life 0.34 year — Bank debentures Par value $ 150 $ — Nominal interest rate 1.25 % — Effective interest rate 1.25 % — Average remaining maturity life 0.41 year — |
Trade Notes and Accounts Rece56
Trade Notes and Accounts Receivable, Net (Tables) - Trade notes and accounts receivable [Member] | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure of financial assets [Line Items] | |
Summary of Trade Notes and Accounts Receivable, Net | December 31 2016 2017 NT$ NT$ (In Millions) Trade notes and accounts receivable $ 32,795 $ 34,058 Less: Allowance for doubtful accounts (1,773 ) (2,117 ) $ 31,022 $ 31,941 |
Aging Analysis for Trade Notes and Accounts Receivable | The aging analysis for trade notes and accounts receivable as of balance sheet dates was as follows: December 31 2016 2017 NT$ NT$ (In Millions) Non-overdue $ 29,596 $ 30,032 Less than 30 days 1,050 1,280 31-60 days 348 485 61-90 days 286 278 91-120 days 198 253 121-180 days 119 122 More than 181 days 1,198 1,608 $ 32,795 $ 34,058 |
Receivables Past Due but Not Impaired | At the balance sheet dates, the receivables that were past due but not impaired were considered recoverable by the management of the Company. The aging of these receivables as of balance sheet dates was as follows: December 31 2016 2017 NT$ NT$ (In Millions) Less than 30 days $ 256 $ 328 31-60 days 47 36 61-90 days 9 7 91-120 days 74 70 121-180 days 1 1 More than 181 days 13 7 $ 400 $ 449 |
Movements of Allowance for Doubtful Accounts | Movements of the allowance for doubtful accounts were as follows: Individually Assessed for Impairment Collectively Assessed for Impairment Total NT$ NT$ NT$ (In Millions) Balance on January 1, 2015 $ 276 $ 773 $ 1,049 Add: Provision for doubtful accounts 88 392 480 Deduct: Amounts written off — (195 ) (195 ) Balance on December 31, 2015 364 970 1,334 Add: Provision for doubtful accounts 715 228 943 Deduct: Amounts written off (274 ) (230 ) (504 ) Balance on December 31, 2016 805 968 1,773 Add: Provision for doubtful accounts 535 43 578 Deduct: Amounts written off (15 ) (219 ) (234 ) Balance on December 31, 2017 $ 1,325 $ 792 $ 2,117 |
Inventories (Tables)
Inventories (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Classes Of Inventories [Abstract] | |
Summary of Inventories | December 31 2016 2017 NT$ NT$ (In Millions) Merchandise $ 4,136 $ 5,133 Project in process 961 1,390 Work in process 109 152 Raw materials 143 89 5,349 6,764 Land held under development 1,999 1,999 Construction in progress 75 77 $ 7,423 $ 8,840 |
Prepayments (Tables)
Prepayments (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Prepayments And Accrued Income [Abstract] | |
Summary of Prepayments | December 31 2016 2017 NT$ NT$ (In Millions) Prepaid rents $ 2,934 $ 2,687 Others 3,285 3,074 $ 6,219 $ 5,761 Current Prepaid rents $ 899 $ 812 Others 2,079 1,376 $ 2,978 $ 2,188 Noncurrent Prepaid rents $ 2,035 $ 1,875 Others 1,206 1,698 $ 3,241 $ 3,573 |
Other Current Monetary Assets (
Other Current Monetary Assets (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Other Current Monetary Assets [Abstract] | |
Summary of Other Current Monetary Assets | December 31 2016 2017 NT$ NT$ (In Millions) Time deposits and negotiable certificates of deposit with maturities of more than three months $ 3,568 $ 4,054 Others 1,253 1,254 $ 4,821 $ 5,308 |
Annual Yield Rates of Time Deposits and Negotiable Certificates of Deposits with Maturities of more Than Three Months | The annual yield rates of time deposits and negotiable certificates of deposit with maturities of more than three months at the balance sheet dates were as follows: December 31 2016 2017 Time deposits and negotiable certificates of deposit with maturities of more than three months 0.11%-1.95% 0.06%-4.15% |
Subsidiaries (Tables)
Subsidiaries (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
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 2016 2017 Note Chunghwa Telecom Co., Ltd. Senao International Co., Ltd. (“SENAO”) Handset and peripherals retailer; sales of CHT mobile phone plans as an agent 29 29 1) 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 69 67 2) CHYP Multimedia Marketing & Communications Co., Ltd. (“CHYP”) Digital information supply services and advertisement services 100 100 3) Prime Asia Investments Group Ltd. (B.V.I.) (“Prime Asia”) Investment 100 100 Spring House Entertainment Tech. Inc. (“SHE”) Digital entertainment contents production, animated character licensing and endorsement, and mobile digital platform construction 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”) Telecommunication 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 4) Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”) International private leased circuit, IP VPN service, ICT and cloud VAS services — 100 5) (Continued) Percentage of Ownership December 31 Name of Investor Name of Investee Main Businesses and Products 2016 2017 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 6) New Prospect Investments Holdings Ltd. (B.V.I.) (“New Prospect”) Investment 100 — 7) 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 89 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 8) 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 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 100 100 9) Spring House Entertainment Tech. Inc. Ceylon Innovation Co., Ltd. (“CEI”) E-book publishing and copyright negotiation of digital music — — 10) Chunghwa Investment Co., Ltd. Chunghwa Precision Test Tech. Co., Ltd. (“CHPT”) Production and sale of semiconductor testing components and printed circuit board 41 38 11) Chunghwa Investment Holding Co., Ltd. (“CIHC”) Investment — — 12) 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 100 — 13) 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 2016 2017 Note Chunghwa Investment Holding Co., Ltd. CHI One Investment Co., Limited (“COI”) Investment — — 14) Senao International HK Limited Senao Trading (Fujian) Co., Ltd. (“STF”) Sale of information and communication technologies products 100 100 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 100 100 15) Senao International Trading (Jiangsu) Co., Ltd. (“SITJ”) Sale of information and communication technologies products 100 100 17) 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 75 16) Chunghwa Precision Test Tech. International, Ltd. Shanghai Taihua Electronic Technology Limited (“STET”) Design of printed circuit board and related consultation service 100 100 (Concluded) 1 ) The Company owns 28.93% equity shares of SENAO. Chunghwa had originally four out of seven seats of the Board of Directors of SENAO through the support of large beneficial stockholders. In order to comply with the local regulations, SENAO increased two seats of independent directors in June 2016; therefore, total seats of its Board of Directors increased to nine and Chunghwa continues to hold four out of nine seats of the Board of Directors. As Chunghwa remains the control over SENAO’s relevant activities, the accounts of SENAO are included in the consolidated financial statements. 2) 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% 3) Chunghwa International Yellow Pages Co., Ltd changed its name to CHYP Multimedia Marketing & Communications Co., Ltd starting from September 4, 2017. 4) Chunghwa invested 75% equity shares of Chunghwa Leading Photonics Tech Co., Ltd. (“CLPT”) in July 2016. 5) Chunghwa invested 100% equity shares of Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”) in March 2017. 6) Chunghwa invested 80% equity shares of CHT Security Co., Ltd. (“CHTSC”) in December 2017. 7 ) New Prospect was approved to dissolve its business in April 2017. The liquidation of New Prospect was completed in May 2017. 8 ) SENAO invested 100% equity shares of SENYOUNG Insurance Agent Co., Ltd. (“SENYOUNG”) in November 2017. 9 ) Concord was approved to end and dissolve its business in August 2017. The liquidation of Concord was completed in January 2018. 10 ) CEI’s liquidation was completed in August 2016 and SHE received the proceeds from the liquidation. 11 ) CHI disposed of some shares of CHPT in March 2016. Furthermore, CHI did not participate in the capital increase of CHPT in March 2016 and September 2017. Therefore, its ownership interest in CHPT decreased to 38.30%. 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. 1 2 ) CIHC’s dissolution was approved in August 2016 and the liquidation was completed in September 2016. CHI received the proceeds from the liquidation. 1 3 ) GNSS (Shanghai) completed its liquidation in August 2017 and Concord received the proceeds from the liquidation. 1 4 ) COI completed its liquidation in July 2016 and CIHC received the proceeds from the liquidation. 1 5 ) SEITS was approved to end and dissolve its business in March 2017. The liquidation of SEITS was completed in March 2018. 1 6 ) JZIT was approved to end and dissolve its business in May 2016. The liquidation of JZIT is still in process. 1 7 ) SITJ was approved to end and dissolve its business in April 2018. The liquidation of SITJ is still in process. 1 8 ) LED invested 60% equity shares of Taoyuan Asia Silicon Valley Innovation Co., Ltd. (“TASVI”) in March 2018. |
Detailed Information of Equity Transactions | The detailed information of the equity transactions for the years ended December 31, 2015, 2016 and 2017 was as follows: Year Ended December 31 2015 2016 2017 CHI Disposed Some Shares of CHPT SENAO Purchased Its Treasury Stock SENAO Participated in Youth's Share Subscription 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$ NT$ NT$ NT$ NT$ (In Millions) Cash consideration received from (paid to) Noncontrolling interests $ 45 $ (492 ) $ — $ 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 (18 ) 416 (0.4 ) (25 ) (786 ) (1,750 ) (137 ) (29 ) Differences arising from equity transactions $ 27 $ (76 ) $ (0.4 ) $ 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 $ 27 $ — $ — $ 58 $ — $ — $ — $ 77 Additional paid-in capital - arising from changes in equities of subsidiaries $ — $ (15 ) $ (0.4 ) $ — $ 389 $ 802 $ 27 $ — Unappropriated earnings $ — $ (61 ) $ — $ — $ — $ — $ — $ — |
Youth Co., Ltd. (Youth) [Member] | |
Disclosure of subsidiaries [Line Items] | |
Business Combinations | c. Business combinations 1) Subsidiaries acquired Principal Activity Date of Acquisition Proportion of Voting Equity Interests Acquired (%) Consideration Transferred NT$ (In Millions) Youth Co., Ltd. and its subsidiaries Sale and maintenance of information and communication technologies products September 2, 2015 70 $ 135 2) Assets acquired and liabilities assumed at the date of acquisition Youth and Its Subsidiaries NT$ (In Millions) Current assets Cash and cash equivalents $ 21 Accounts and other receivables 10 Inventories 30 Prepayments 6 Other current assets 6 Noncurrent assets Property, plant and equipment 36 Intangible assets 259 Refundable deposits 22 Deferred income tax assets 4 Other noncurrent assets 32 Current liabilities Short-term loans (54 ) Trade notes payable (9 ) Accounts and other payables (75 ) Other current liabilities (80 ) Noncurrent liabilities Long-term loans (40 ) Deferred income tax liabilities (44 ) Other noncurrent liabilities (10 ) $ 114 3) Goodwill arising on acquisition Youth and Its Subsidiaries NT$ (In Millions) Consideration transferred $ 135 Add: Noncontrolling interest (30% of the recognized amounts of Youth and its subsidiaries’ identifiable net assets) 34 Less: Fair value of identifiable net assets acquired (114 ) Goodwill arising on acquisition $ 55 4) Net cash outflow on acquisition of subsidiaries Youth and Its Subsidiaries NT$ (In Millions) Consideration paid in cash $ 135 Less: Cash and cash equivalents acquired (21 ) $ 114 5) Impact of acquisitions on the results of the Company’s financial performance The results of the acquired subsidiaries’ financial performance from the acquisition date to December 31, 2015, were as follows: Youth and ItsSubsidiaries NT$ (In Millions) Revenue $ 188 Net loss $ 18 |
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 2016 2017 SENAO Taiwan 71% 71% CHPT Taiwan 59% 62% Profit Allocated to Noncontrolling Interests Accumulated Noncontrolling Interests Year Ended December 31 December 31 2015 2016 2017 2016 2017 NT$ NT$ NT$ NT$ NT$ (In Millions) SENAO $ 551 $ 690 $ 592 $ 4,069 $ 4,092 CHPT $ 212 $ 341 $ 431 1,575 3,513 Individually immaterial subsidiaries with noncontrolling interests 628 869 $ 6,272 $ 8,474 |
Summarized Financial Information Before Intercompany Eliminations | The summarized financial information below represents amounts before intercompany eliminations. December 31 2016 2017 NT$ NT$ (In Millions) Current assets $ 7,762 $ 7,584 Noncurrent assets $ 2,535 $ 2,531 Current liabilities $ 4,466 $ 4,278 Noncurrent liabilities $ 155 $ 160 Equity attributable to the parent $ 1,607 $ 1,585 Equity attributable to noncontrolling interests $ 4,069 $ 4,092 Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Revenue and income $ 35,944 $ 34,453 $ 36,038 Costs and expenses 35,171 33,476 35,200 Profit for the year $ 773 $ 977 $ 838 Profit attributable to the parent $ 222 $ 287 $ 246 Profit attributable to noncontrolling interests 551 690 592 Profit for the year $ 773 $ 977 $ 838 Other comprehensive income (loss) attributable to the parent $ (1 ) $ (21 ) $ 3 Other comprehensive loss attributable to noncontrolling interests (2 ) (53 ) (17 ) Other comprehensive loss for the year $ (3 ) $ (74 ) $ (14 ) Total comprehensive income attributable to the parent $ 222 $ 266 $ 249 Total comprehensive income attributable to noncontrolling interests 548 637 575 Total comprehensive income for the year $ 770 $ 903 $ 824 Dividends paid to noncontrolling interests $ 274 $ 526 $ 703 Net cash flow from operating activities $ 1,739 $ 531 $ 1,081 Net cash flow from investing activities 54 130 (57 ) Net cash flow from financing activities (1,530 ) (677 ) (897 ) Effect of exchange rate changes on cash and cash equivalents 11 (7 ) (2 ) Net cash inflow (outflow) $ 274 $ (23 ) $ 125 . The summarized financial information below represents amounts before intercompany eliminations. December 31 2016 2017 NT$ NT$ (In Millions) Current assets $ 2,116 $ 4,496 Noncurrent assets $ 1,872 $ 2,167 Current liabilities $ 1,323 $ 965 Noncurrent liabilities $ 1 $ 1 Equity attributable to CHI $ 1,089 $ 2,184 Equity attributable to noncontrolling interests $ 1,575 $ 3,513 Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Revenue and income $ 1,735 $ 2,607 $ 3,127 Costs and expenses 1,341 2,020 2,402 Profit for the year $ 394 $ 587 $ 725 Profit attributable to CHI $ 182 $ 246 $ 294 Profit attributable to noncontrolling interests 212 341 431 Profit for the year $ 394 $ 587 $ 725 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 $ 182 $ 246 $ 293 Total comprehensive income attributable to noncontrolling interests 212 341 429 Total comprehensive income for the year $ 394 $ 587 $ 722 Dividends paid to noncontrolling interests $ 35 $ 109 $ 146 Net cash flow from operating activities $ 532 $ 671 $ 1,052 Net cash flow from investing activities (200 ) (904 ) (639 ) Net cash flow from financing activities (112 ) 841 2,306 Effect of exchange rate changes on cash and cash equivalents 3 (2 ) (4 ) Net cash inflow $ 223 $ 606 $ 2,715 |
Investments Accounted for Usi61
Investments Accounted for Using Equity Method (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Significant Investments In Associates And Joint Ventures [Abstract] | |
Summary of Investments Accounted for Using Equity Method | December 31 2016 2017 NT$ NT$ (In Millions) Investments in associates $ 2,383 $ 2,326 Investments in joint ventures 3 — $ 2,386 $ 2,326 |
Investments in Associates | Investments in associates were as follows: Carrying Amount December 31 2016 2017 NT$ NT$ (In Millions) Listed Senao Networks, Inc. (“SNI”) $ 680 $ 704 Non-listed ST-2 Satellite Ventures Pte. Ltd. (“STS”) 467 472 International Integrated System, Inc. (“IISI”) 307 292 Viettel-CHT Co., Ltd. (“Viettel-CHT”) 275 256 Skysoft Co., Ltd. (“SKYSOFT”) 145 140 Taiwan International Standard Electronics Co., Ltd. (“TISE”) 142 132 KingwayTek Technology Co., Ltd. (“KWT”) 84 90 So-net Entertainment Taiwan Limited (“So-net”) 111 104 Taiwan International Ports Logistics Corporation (“TIPL”) 57 50 Click Force Co., Ltd. (“CF”) 37 38 Dian Zuan Integrating Marketing Co., Ltd. (“DZIM”) 22 12 HopeTech Technologies Limited (“HopeTech”) 24 23 Alliance Digital Tech Co., Ltd. (“ADT”) 32 13 MeWorks LIMITED (HK) (“MeWorks”) — — $ 2,383 $ 2,326 The percentages of ownership and voting rights in associates held by the Company as of balance sheet dates were as follows: % of Ownership and Voting Rights December 31 2016 2017 Senao Networks, Inc. (“SNI”) 34 34 ST-2 Satellite Ventures Pte., Ltd. (“STS”) 38 38 International Integrated System, Inc. (“IISI”) 32 32 Viettel-CHT Co., Ltd. (“Viettel-CHT”) 30 30 Skysoft Co., Ltd. (“SKYSOFT”) 30 30 Taiwan International Standard Electronics Co., Ltd. (“TISE”) 40 40 KingwayTek Technology Co., Ltd. (“KWT”) 26 26 So-net Entertainment Taiwan Limited (“So-net”) 30 30 Taiwan International Ports Logistics Corporation (“TIPL”) 27 27 Click Force Co., Ltd. (“CF”) 49 49 Dian Zuan Integrating Marketing Co., Ltd. (“DZIM”) 26 22 HopeTech Technologies Limited (“HopeTech”) 45 45 Alliance Digital Tech Co., Ltd. (“ADT”) 14 14 MeWorks LIMITED (HK) (“MeWorks”) 20 20 Summarized financial information of associates that are not individually material was as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) The Company’s share of profit $ 926 $ 557 $ 420 The Company’s share of other comprehensive loss (19 ) (47 ) (4 ) The Company’s share of total comprehensive income $ 907 $ 510 $ 416 The Level 1 fair values based on the closing market prices of SNI as of the balance sheet dates were as follows: December 31 2016 2017 NT$ NT$ (In Millions) SNI $ 2,537 $ 2,130 |
Investments in Joint Ventures | Investments in joint ventures were as follows: % of Ownership and Carrying Amount Voting Rights December 31 December 31 2016 2017 2016 2017 NT$ NT$ (In Millions) Non-listed Chunghwa Benefit One Co., Ltd. (“CBO”) $ 3 $ — 50 — Huada Digital Corporation (“HDD”) — — 50 — $ 3 $ — Summarized financial information of joint ventures that were not material to the Company was as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) The Company’s share of loss $ (29 ) $ (42 ) $ (1 ) The Company’s share of other comprehensive income — — — The Company’s share of total comprehensive loss $ (29 ) $ (42 ) $ (1 ) |
Property, Plant and Equipment (
Property, Plant and Equipment (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Property Plant And Equipment [Abstract] | |
Summary of Property, Plant and Equipment | 17. PROPERTY, PLANT AND EQUIPMENT December 31 2016 2017 NT$ NT$ (In Millions) Carrying amount Land $ 103,872 $ 104,079 Land improvements 333 302 Buildings 42,147 45,895 Computer equipment 2,713 2,374 Telecommunications equipment 119,195 114,900 Transportation equipment 629 321 Miscellaneous equipment 2,140 2,310 Construction in progress and equipment to be accepted 20,141 18,527 $ 291,170 $ 288,708 Land Land Improvements Buildings Computer Equipment Telecommuni- cations Equipment Transportation Equipment Miscellaneous Equipment Construction in Progress and Equipment to be Accepted Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Cost Balance on January 1, 2015 $ 102,774 $ 1,558 $ 67,600 $ 15,318 $ 695,076 $ 3,824 $ 8,643 $ 20,930 $ 915,723 Additions — — 59 37 159 — 203 23,993 24,451 Disposal — — (11 ) (1,073 ) (13,047 ) (69 ) (511 ) — (14,711 ) Effect of foreign exchange differences — — — — 69 — — — 69 Acquisitions through business combinations 19 — 7 — — — 39 — 65 Others (46 ) 17 135 714 23,115 60 363 (24,521 ) (163 ) Balance on December 31, 2015 $ 102,747 $ 1,575 $ 67,790 $ 14,996 $ 705,372 $ 3,815 $ 8,737 $ 20,402 $ 925,434 Accumulated depreciation and impairment Balance on January 1, 2015 $ — $ (1,145 ) $ (23,202 ) $ (11,308 ) $ (568,767 ) $ (2,208 ) $ (6,443 ) $ — $ (613,073 ) Depreciation expenses — (53 ) (1,269 ) (1,467 ) (26,291 ) (599 ) (671 ) — (30,350 ) Disposal — — 10 1,061 13,033 69 425 — 14,598 Impairment losses — — — — (138 ) — — — (138 ) Effect of foreign exchange differences — — — — (14 ) — — — (14 ) Acquisitions through business combinations — — (1 ) — — — (28 ) — (29 ) Others — (5 ) 41 (1 ) (28 ) (12 ) (24 ) — (29 ) Balance on December 31, 2015 $ — $ (1,203 ) $ (24,421 ) $ (11,715 ) $ (582,205 ) $ (2,750 ) $ (6,741 ) $ — $ (629,035 ) Cost Balance on January 1, 2016 $ 102,747 $ 1,575 $ 67,790 $ 14,996 $ 705,372 $ 3,815 $ 8,737 $ 20,402 $ 925,434 Additions 791 — 36 42 171 1 255 23,295 24,591 Disposal (2 ) (6 ) (35 ) (1,546 ) (11,542 ) (54 ) (625 ) — (13,810 ) Effect of foreign exchange differences — — — (3 ) (35 ) — (4 ) — (42 ) Others 336 12 (53 ) 806 21,726 104 580 (23,556 ) (45 ) Balance on December 31, 2016 $ 103,872 $ 1,581 $ 67,738 $ 14,295 $ 715,692 $ 3,866 $ 8,943 $ 20,141 $ 936,128 (Continued) Land Land Improvements Buildings Computer Equipment Telecommuni- cations Equipment Transportation Equipment Miscellaneous Equipment Construction in Progress and Equipment to be Accepted Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Accumulated depreciation and impairment Balance on January 1, 2016 $ — $ (1,203 ) $ (24,421 ) $ (11,715 ) $ (582,205 ) $ (2,750 ) $ (6,741 ) $ — $ (629,035 ) Depreciation expenses — (51 ) (1,269 ) (1,332 ) (25,280 ) (529 ) (626 ) — (29,087 ) Disposal — 6 34 1,529 11,512 54 583 — 13,718 Impairment losses — — — — (596 ) — — — (596 ) Effect of foreign exchange differences — — — 1 7 — 4 — 12 Others — — 65 (65 ) 65 (12 ) (23 ) — 30 Balance on December 31, 2016 $ — $ (1,248 ) $ (25,591 ) $ (11,582 ) $ (596,497 ) $ (3,237 ) $ (6,803 ) $ — $ (644,958 ) Cost Balance on January 1, 2017 $ 103,872 $ 1,581 $ 67,738 $ 14,295 $ 715,692 $ 3,866 $ 8,943 $ 20,141 $ 936,128 Additions — — 30 78 193 1 193 25,574 26,069 Disposal (158 ) (5 ) (108 ) (974 ) (13,739 ) (62 ) (402 ) — (15,448 ) Effect of foreign exchange differences — — — (1 ) (172 ) — (3 ) — (176 ) Others 365 19 5,034 764 20,080 29 784 (27,188 ) (113 ) Balance on December 31, 2017 $ 104,079 $ 1,595 $ 72,694 $ 14,162 $ 722,054 $ 3,834 $ 9,515 $ 18,527 $ 946,460 Accumulated depreciation and impairment Balance on January 1, 2017 $ — $ (1,248 ) $ (25,591 ) $ (11,582 ) $ (596,497 ) $ (3,237 ) $ (6,803 ) $ — $ (644,958 ) Depreciation expenses — (50 ) (1,402 ) (1,192 ) (24,492 ) (330 ) (677 ) — (28,143 ) Disposal — 4 47 967 13,712 63 389 — 15,182 Effect of foreign exchange differences — — — — 45 — 2 — 47 Others — 1 147 19 78 (9 ) (116 ) — 120 Balance on December 31, 2017 $ — $ (1,293 ) $ (26,799 ) $ (11,788 ) $ (607,154 ) $ (3,513 ) $ (7,205 ) $ — $ (657,752 ) |
Disclosure of Property Plant And Equipment Estimated Useful Life Explanatory | Depreciation expense is computed using the straight-line method over the following estimated service lives: Land improvements 8-30 years Buildings Main buildings 35-60 years Other building facilities 3-20 years Computer equipment 2-8 years Telecommunications equipment Telecommunication circuits 2-30 years Telecommunication machinery and antennas equipment 2-30 years Transportation equipment 3-10 years Miscellaneous equipment Leasehold improvements 1-6 years Mechanical and air conditioner equipment 3-16 years Others 1-10 years |
Investment Properties (Tables)
Investment Properties (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Investment Property [Abstract] | |
Summary of Investment Properties | December 31 2016 2017 NT$ NT$ (In Millions) Carrying amount Investment properties $ 8,115 $ 8,048 Investment Properties NT$ (In Millions) Cost Balance on January 1, 2015 $ 8,883 Disposal — Reclassification 175 Balance on December 31, 2015 $ 9,058 Accumulated depreciation and impairment Balance on January 1, 2015 $ (1,262 ) Depreciation expense (18 ) Disposal — Reclassification (18 ) Reversal of impairment loss 142 Balance on December 31, 2015 $ (1,156 ) Cost Balance on January 1, 2016 $ 9,058 Additions — Reclassification 137 Balance on December 31, 2016 $ 9,195 Accumulated depreciation and impairment Balance on January 1, 2016 $ (1,156 ) Depreciation expense (19 ) Reclassification (53 ) Reversal of impairment loss 148 Balance on December 31, 2016 $ (1,080 ) Cost Balance on January 1, 2017 $ 9,195 Reclassification (60 ) Balance on December 31, 2017 $ 9,135 Accumulated depreciation and impairment Balance on January 1, 2017 $ (1,080 ) Depreciation expense (21 ) Reclassification 3 Reversal of impairment loss 11 Balance on December 31, 2017 $ (1,087 ) |
Estimated Service Lives of Investment Properties | Depreciation expense is computed using the straight-line method over the following estimated service lives: Land improvements 8-30 years Buildings Main buildings 35-60 years Other building facilities 4-10 years |
Key Assumptions and Fair Values of Investment Properties | The fair values of the Company’s investment properties as of December 31, 2016 and 2017 were determined by Level 3 fair value measurements inputs based on the appraisal reports conducted by independent appraisers. Those appraisal reports are based on the comparison approach, income approach or cost approach. Key assumptions and the fair values were as follows: December 31 2016 2017 NT$ NT$ (In Millions) Fair value $ 17,778 $ 17,728 Overall capital interest rate 1.46%-2.20% 1.46%-2.20% Profit margin ratio 10%-20% 12%-20% Discount rate 1.04 % 1.04% Capitalization rate 0.43%-1.78% 0.47%-1.69% |
Intangible Assets (Tables)
Intangible Assets (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Intangible Assets [Abstract] | |
Summary of Intangible Assets | December 31 2016 2017 NT$ NT$ (In Millions) Carrying amount 3G and 4G concession $ 45,796 $ 53,469 Computer software 995 880 Goodwill 218 209 Others 344 325 $ 47,353 $ 54,883 3G and 4G Concession Computer Software Goodwill Others Total NT$ NT$ NT$ NT$ NT$ (In Millions) Cost Balance on January 1, 2015 $ 49,254 $ 3,192 $ 181 $ 151 $ 52,778 Additions-acquired separately 9,955 424 — 1 10,380 Disposal — (375 ) — (2 ) (377 ) Effect of foreign exchange difference — — — — — Acquisitions through business combinations — — 55 259 314 Others — 8 — — 8 Balance on December 31, 2015 $ 59,209 $ 3,249 $ 236 $ 409 $ 63,103 Accumulated amortization and impairment Balance on January 1, 2015 $ (8,104 ) $ (1,793 ) $ (18 ) $ (38 ) $ (9,953 ) Amortization expenses (2,504 ) (565 ) — (11 ) (3,080 ) Disposal — 375 — 2 377 Effect of foreign exchange difference — — — — — Others — — — — — Balance on December 31, 2015 $ (10,608 ) $ (1,983 ) $ (18 ) $ (47 ) $ (12,656 ) Cost Balance on January 1, 2016 $ 59,209 $ 3,249 $ 236 $ 409 $ 63,103 Additions-acquired separately — 277 — 5 282 Disposal — (121 ) — — (121 ) Effect of foreign exchange difference — — — — — Others — 3 — — 3 Balance on December 31, 2016 $ 59,209 $ 3,408 $ 236 $ 414 $ 63,267 Accumulated amortization and impairment Balance on January 1, 2016 $ (10,608 ) $ (1,983 ) $ (18 ) $ (47 ) $ (12,656 ) Amortization expenses (2,805 ) (551 ) — (23 ) (3,379 ) Disposal — 121 — — 121 Impairment losses — — — — — Effect of foreign exchange difference — — — — — Balance on December 31, 2016 $ (13,413 ) $ (2,413 ) $ (18 ) $ (70 ) $ (15,914 ) Cost Balance on January 1, 2017 $ 59,209 $ 3,408 $ 236 $ 414 $ 63,267 Additions-acquired separately 10,935 366 — 4 11,305 Disposal — (462 ) — — (462 ) Effect of foreign exchange difference — — — — — Balance on December 31, 2017 $ 70,144 $ 3,312 $ 236 $ 418 $ 74,110 Accumulated amortization and impairment Balance on January 1, 2017 $ (13,413 ) $ (2,413 ) $ (18 ) $ (70 ) $ (15,914 ) Amortization expenses (3,262 ) (481 ) — (23 ) (3,766 ) Disposal — 462 — — 462 Impairment losses — — (9 ) — (9 ) Effect of foreign exchange difference — — — — — Balance on December 31, 2017 $ (16,675 ) $ (2,432 ) $ (27 ) $ (93 ) $ (19,227 ) |
Other Assets (Tables)
Other Assets (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Miscellaneous Assets [Abstract] | |
Summary of Other Assets | December 31 2016 2017 NT$ NT$ (In Millions) Spare parts $ 1,776 $ 2,059 Refundable deposits 2,083 1,860 Other financial assets 1,000 1,000 Others 2,288 2,800 $ 7,147 $ 7,719 Current Spare parts $ 1,776 $ 2,059 Others 346 124 $ 2,122 $ 2,183 Noncurrent Refundable deposits $ 2,083 $ 1,860 Other financial assets 1,000 1,000 Others 1,942 2,676 $ 5,025 $ 5,536 |
Hedging Derivative Financial 66
Hedging Derivative Financial Instruments (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Detailed Information About Hedging Instruments [Abstract] | |
Summary of Hedging Derivative Financial Instruments | December 31 2016 2017 NT$ NT$ (In Millions) Hedging derivative financial liabilities Cash flow hedge - forward exchange contracts $ 1 $ 1 |
Outstanding Forward Exchange Contracts | The outstanding forward exchange contracts at the balance sheet dates were as follows: Currency Maturity Period Contract Amount (Millions) December 31, 2016 Forward exchange contracts - buy EUR/NT$ 2017.03 EUR3/NT$102 December 31, 2017 Forward exchange contracts - buy EUR/NT$ 2018.03-06 EUR4/NT$142 |
Loss (Gain) Arising from Hedging Derivative Financial Instruments that have been Reclassified from Equity to Initial Cost of the Property, Plant and Equipment | Loss (gain) arising from the hedging derivative financial instruments that have been reclassified from equity to initial cost of the property, plant and equipment were as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Construction in progress and equipment to be accepted $ (18 ) $ (15 ) $ (2 ) |
Short-Term Loans (Tables)
Short-Term Loans (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Short-term loans [Member] | |
Disclosure of detailed information about borrowings [Line Items] | |
Summary of Loans | December 31 2016 2017 NT$ NT$ (In Millions) Secured loans (Note 41) $ 20 $ — Unsecured loans 118 70 $ 138 $ 70 The annual interest rates of loans were as follows: December 31 2016 2017 Secured loans 1.98% — Unsecured loans 1.95%-2.25% 2.15%-2.19% |
Long-Term Loans (Tables)
Long-Term Loans (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Long-term loans [Member] | |
Disclosure of detailed information about borrowings [Line Items] | |
Summary of Loans | December 31 2016 2017 NT$ NT$ (In Millions) Secured loans (Note 41) $ 1,600 $ 1,600 The annual interest rates of loans were as follows: December 31 2016 2017 Secured loans 0.91% 0.91% |
Trade Notes and Accounts Paya69
Trade Notes and Accounts Payable (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Trade And Other Current Payables [Abstract] | |
Summary of Trade Notes and Accounts Payable | December 31 2016 2017 NT$ NT$ (In Millions) Trade notes and accounts payable $ 18,810 $ 19,396 |
Other Payables (Tables)
Other Payables (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Trade And Other Current Payables [Abstract] | |
Summary of Other Payables | December 31 2016 2017 NT$ NT$ (In Millions) Accrued salary and compensation $ 9,770 $ 9,748 Payables to contractors 2,396 2,058 Accrued compensation to employees and remuneration to directors and supervisors 2,015 1,949 Payables to equipment suppliers 1,623 1,690 Accrued franchise fees 1,326 1,248 Amounts collected for others 1,407 1,203 Accrued maintenance costs 1,062 1,081 Others 6,819 6,024 $ 26,418 $ 25,001 |
Provisions (Tables)
Provisions (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Provisions [Abstract] | |
Summary of Provisions | December 31 2016 2017 NT$ NT$ (In Millions) Warranties $ 111 $ 132 Trade-in right 31 87 Employee benefits 38 43 Others 5 5 $ 185 $ 267 Current $ 119 $ 189 Noncurrent 66 78 $ 185 $ 267 |
Movements in Provisions | Warranties Trade-in rights Employee Benefits Others Total NT$ NT$ NT$ NT$ NT$ (In Millions) Balance on January 1, 2015 $ 212 $ — $ 55 $ 5 $ 272 Additional provisions recognized 100 — 12 — 112 Used / forfeited during the year (99 ) — (37 ) — (136 ) Balance on December 31, 2015 $ 213 $ — $ 30 $ 5 $ 248 Balance on January 1, 2016 $ 213 $ — $ 30 $ 5 $ 248 Additional provisions recognized 81 31 9 — 121 Used / forfeited during the year (183 ) — (1 ) — (184 ) Balance on December 31, 2016 $ 111 $ 31 $ 38 $ 5 $ 185 Balance on January 1, 2017 $ 111 $ 31 $ 38 $ 5 $ 185 Additional provisions recognized 79 69 7 — 155 Used / forfeited during the year (58 ) (13 ) (2 ) — (73 ) Balance on December 31, 2017 $ 132 $ 87 $ 43 $ 5 $ 267 |
Retirement Benefit Plans (Table
Retirement Benefit Plans (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Defined Benefit Plans [Abstract] | |
Amounts Included in Consolidated Balance Sheets from Obligation in Respect of Defined Benefit Plans | The amounts included in the consolidated balance sheets arising from the Company’s obligation in respect of its defined benefit plans were as follows: December 31 2016 2017 NT$ NT$ (In Millions) Present value of funded defined benefit obligation $ 34,572 $ 37,663 Fair value of plan assets (33,954 ) (34,972 ) Funded status - deficit $ 618 $ 2,691 Net defined benefit liabilities $ 1,537 $ 2,704 Net defined benefit assets (919 ) (13 ) $ 618 $ 2,691 |
Movements in Defined Benefit Obligation and Fair Value of Plan Assets | Movements in the defined benefit obligation and the fair value of plan assets were as follows: Present Value of Funded Defined Benefit Obligation Fair Value of Plan Assets Net Defined Benefit Liabilities (Assets) NT$ NT$ NT$ (In Millions) Balance on January 1, 2015 $ 27,958 $ 21,496 $ 6,462 Current service cost 2,884 — 2,884 Interest expense/interest income 546 444 102 Amounts recognized in profit or loss 3,430 444 2,986 Remeasurement on the net defined benefit liability Return on plan assets (excluding amounts included in net interest) — 136 (136 ) Actuarial losses recognized from changes in demographic assumptions 11 — 11 Actuarial gains recognized from changes in financial assumptions (1 ) — (1 ) Actuarial losses recognized from experience adjustments 357 — 357 Amounts recognized in other comprehensive income 367 136 231 Contributions from employer — 2,435 (2,435 ) Benefits paid (717 ) (717 ) — Benefits paid directly by the Company (156 ) — (156 ) Balance on December 31, 2015 $ 30,882 $ 23,794 $ 7,088 Current service cost 2,866 — 2,866 Interest expense/interest income 600 573 27 Amounts recognized in profit or loss 3,466 573 2,893 Remeasurement on the net defined benefit liability Return on plan assets (excluding amounts included in net interest) — (352 ) 352 Actuarial gains recognized from changes in demographic assumptions (124 ) — (124 ) Actuarial losses recognized from changes in financial assumptions 1,715 — 1,715 Actuarial losses recognized from experience adjustments 100 — 100 Amounts recognized in other comprehensive income 1,691 (352 ) 2,043 Contributions from employer — 11,235 (11,235 ) Benefits paid (1,296 ) (1,296 ) — Benefits paid directly by the Company (171 ) — (171 ) Balance on December 31, 2016 $ 34,572 $ 33,954 $ 618 Current service cost 2,918 — 2,918 Interest expense/interest income 506 519 (13 ) Amounts recognized in profit or loss 3,424 519 2,905 Remeasurement on the net defined benefit liability Return on plan assets (excluding amounts included in net interest) — (193 ) 193 Actuarial losses recognized from changes in demographic assumptions 15 — 15 Actuarial losses recognized from experience adjustments 1,816 — 1,816 Amounts recognized in other comprehensive income 1,831 (193 ) 2,024 Contributions from employer — 2,635 (2,635 ) Benefits paid (1,943 ) (1,943 ) — Benefits paid directly by the Company (221 ) — (221 ) Balance on December 31, 2017 $ 37,663 $ 34,972 $ 2,691 |
Pension Costs Recognized in Profit and Loss for Defined Benefit Plans | Relevant pension costs recognized in profit and loss for defined benefit plans were as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Operating costs $ 1,794 $ 1,732 $ 1,734 Marketing expenses 856 838 847 General and administrative expenses 162 155 156 Research and development expenses 102 97 97 $ 2,914 $ 2,822 $ 2,834 |
Principal Assumptions Used for Actuarial Valuations | The principal assumptions used for the purpose of the actuarial valuations were as follows: Measurement Date December 31 2016 2017 Discount rates 1.50% 1.50% Expected rates of salary increase 1.20%-2.00% 1.20%-2.00% |
Effect on Present Value of Defined Benefit Obligation Due to a Reasonably Possible Change of the Significant Actuarial Assumptions | If reasonably possible changes of the respective significant actuarial assumptions occur at the end of reporting periods, while holding all other assumptions constant, the present value of the defined benefit obligation would increase (decrease) as follows: December 31 2016 2017 NT$ NT$ (In Millions) Discount rates 0.5% increase $ (1,219 ) $ (1,232 ) 0.5% decrease $ 1,298 $ 1,310 Expected rates of salary increase 0.5% increase $ 1,379 $ 1,398 0.5% decrease $ (1,306 ) $ (1,326 ) |
Summary of Sensitivity Analysis | December 31 2016 2017 NT$ NT$ (In Millions) The expected contributions to the plan for the next year $ 2,724 $ 4,393 The average duration of the defined benefit obligation 7-14 years 6-13 years |
Maturity Analysis of Undiscounted Benefit Payments | The Company’s maturity analysis of the undiscounted benefit payments as of December 31, 2017 was as follows: Year Amount NT$ (In Millions) 2018 $ 2,042 2019 4,716 2020 8,088 2021 11,201 2022 and thereafter 48,310 $ 74,357 |
Equity (Tables)
Equity (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure of classes of share capital [Line Items] | |
Summary of Common Stocks | 1) Common stocks December 31 2016 2017 NT$ NT$ (In Millions) Number of authorized shares 12,000 12,000 Authorized shares $ 120,000 $ 120,000 Number of issued and paid shares 7,757 7,757 Issued and outstanding shares $ 77,574 $ 77,574 |
Adjustments of Additional Paid-in Capital | The adjustments of additional paid-in capital for the years ended December 31, 2015, 2016 and 2017 were as follows: Share Premium Movements of Additional Paid-in Capital for Associates and Joint Ventures Accounted for Using Equity Method Movements of Additional Paid-in Capital Arising from Changes in Equities of Subsidiaries Difference between Consideration Received and Carrying Amount of the Subsidiaries’ Net Assets upon Disposal Donated Capital Stockholders’ Contribution Due to Privatization Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Balance on January 1, 2015 $ 126,045 $ — $ 14 $ — $ 13 $ 20,648 $ 146,720 Partial disposal of interests in subsidiaries — — — 27 — — 27 Other changes in additional paid-in capital in subsidiaries — — 1 — — — 1 Subsidiary purchased its treasury stock — — (15 ) — — — (15 ) Balance on December 31, 2015 $ 126,045 $ — $ — $ 27 $ 13 $ 20,648 $ 146,733 Balance on January 1, 2016 $ 126,045 $ — $ — $ 27 $ 13 $ 20,648 $ 146,733 Partial disposal of interests in subsidiaries — — — 58 — — 58 Change in additional paid-in capital for not participating in the capital increase of a subsidiary — — 389 — — — 389 Share-based payment transactions of subsidiaries — — — — — — — Balance on December 31, 2016 $ 126,045 $ — $ 389 $ 85 $ 13 $ 20,648 $ 147,180 Balance on January 1, 2017 $ 126,045 $ — $ 389 $ 85 $ 13 $ 20,648 $ 147,180 Unclaimed dividend — — — — 3 — 3 Change in additional paid-in capital from investments in associates and joint ventures accounted for using equity method — — — — — — — Partial disposal of interests in subsidiaries — — 1 76 — — 77 Change in additional paid-in capital for not participating in the capital increase of a subsidiary — — 802 — — — 802 Other changes in additional paid-in capital in subsidiaries — — — — — — — Share-based payment transactions of subsidiaries — — 2 — — — 2 Treasury stock transfer of subsidiaries — — 27 — — — 27 Balance on December 31, 2017 $ 126,045 $ — $ 1,221 $ 161 $ 16 $ 20,648 $ 148,091 |
Appropriations of Earnings | The appropriations of the 2015 and 2016 earnings of Chunghwa approved by the stockholders in their meetings on June 24, 2016 and June 23, 2017 were as follows: Appropriation of Earnings Dividends Per Share For Fiscal Year 2015 For Fiscal Year 2016 For Fiscal Year 2015 For Fiscal Year 2016 NT$ NT$ NT$ NT$ (In Millions) Special reserve $ — $ 5 Cash dividends 42,551 38,336 $ 5.4852 $ 4.9419 For Fiscal Year 2017 Appropriation of Earnings Dividends Per Share NT$ NT$ (In Millions) Reversal of special reserve $ 5 Cash dividends 37,205 $ 4.796 |
Noncontrolling Interests | e. Noncontrolling interests Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Beginning balance $ 4,924 $ 5,065 $ 6,272 Attributable to noncontrolling interests Net income for the year 813 1,141 1,172 Exchange differences arising from the translation of the foreign operations (3 ) (41 ) (12 ) Unrealized gain (loss) on available-for-sale financial assets 2 — (2 ) Income tax relating to unrealized gain and loss on available-for-sale financial assets — — 1 Remeasurements of defined benefit pension plans (3 ) (18 ) (8 ) Income tax relating to remeasurements of defined benefit pension plans 1 3 — Share of other comprehensive income (loss) of associates accounted for using equity method 2 (1 ) (2 ) Cash dividends distributed by subsidiaries (350 ) (710 ) (942 ) Partial disposal of interests in subsidiaries 18 25 29 Change in additional paid-in capital for not participating in the capital increase of a subsidiary — 786 1,750 Other changes in additional paid-in capital of subsidiaries 2 — — Share-based payment transactions of subsidiaries 36 17 20 Subsidiary purchased its treasury stock (416 ) — — Net increase in noncontrolling interests 39 5 196 Ending balance $ 5,065 $ 6,272 $ 8,474 |
Unrealized gain (loss) on available-for-sale financial assets [Member] | |
Disclosure of classes of share capital [Line Items] | |
Unrealized Gain (Loss) on Available-for-sale Financial Assets | 2) Unrealized gain (loss) on available-for-sale financial assets Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Beginning balance $ 740 $ 91 $ (51 ) Unrealized gain (loss) on available-for-sale financial assets (670 ) (721 ) 607 Income tax relating to unrealized gain and loss on available-for-sale financial assets (2 ) 2 2 Amount reclassified from equity to profit or loss on disposal of available-for-sale financial assets — — — Amount reclassified from equity to profit or loss on impairment of available-for-sale financial assets 23 577 — Ending balance $ 91 $ (51 ) $ 558 |
Net Income and Other Comprehe74
Net Income and Other Comprehensive Income (Loss) (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Text Block1 [Abstract] | |
Other Income and Expenses | a. Other income and expenses Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Loss on disposal of property, plant and equipment $ (109 ) $ (48 ) $ (107 ) Impairment loss on property, plant and equipment (138 ) (596 ) — Reversal of impairment loss on investment properties 142 148 11 Loss on disposal of intangible assets — — — Impairment loss on intangible assets — — (9 ) $ (105 ) $ (496 ) $ (105 ) |
Other Income | b. Other income Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Dividend income $ 218 $ 391 $ 328 Rental income 38 41 61 Income from Piping Fund 202 202 — Others 192 438 447 $ 650 $ 1,072 $ 836 |
Other Gains and Losses | c. Other gains and losses Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Net foreign currency exchange gains (losses) $ 63 $ 181 $ (88 ) Gain on disposal of financial instruments — — 3 Valuation gain (loss) on financial assets and liabilities at fair value through profit or loss, net — (1 ) 1 Gain (loss) on disposal of investments accounted for using equity method 4 (2 ) — Impairment loss on investments accounted for using equity method (8 ) — — Impairment loss on available-for-sale financial assets (107 ) (577 ) — Others (180 ) (49 ) (48 ) $ (228 ) $ (448 ) $ (132 ) |
Impairment Loss (Reversal of Impairment Loss) on Financial Instruments and Non-financial Assets | d. Impairment loss (reversal of impairment loss) on financial instruments Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Trade notes and accounts receivable $ 480 $ 943 $ 578 Other receivables $ 39 $ (2 ) $ 65 Available-for-sale financial assets $ 107 $ 577 $ — e. Impairment loss (reversal of impairment loss) on non-financial assets Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Inventories $ 198 $ 192 $ 52 Property, plant and equipment $ 138 $ 596 $ — Investments accounted for using equity method $ 8 $ — $ — Investment properties $ (142 ) $ (148 ) $ (11 ) Intangible assets $ — $ — $ 9 |
Depreciation and Amortization Expenses | f. Depreciation and amortization expenses Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Property, plant and equipment $ 30,350 $ 29,087 $ 28,143 Investment properties 18 19 21 Intangible assets 3,080 3,379 3,766 Total depreciation and amortization expenses $ 33,448 $ 32,485 $ 31,930 Depreciation expenses summarized by functions Operating costs $ 28,292 $ 27,214 $ 26,402 Operating expenses 2,076 1,892 1,762 $ 30,368 $ 29,106 $ 28,164 Amortization expenses summarized by functions Operating costs $ 2,742 $ 3,042 $ 3,473 Marketing expenses 178 173 154 General and administrative expenses 116 126 104 Research and development expenses 44 38 35 $ 3,080 $ 3,379 $ 3,766 |
Employee Benefit Expenses | g. Employee benefit expenses Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Post-employment benefit Defined contribution plans $ 489 $ 544 $ 594 Defined benefit plans 2,914 2,822 2,834 3,403 3,366 3,428 Share-based payment Equity-settled share-based payment 36 17 22 Other employee benefit Salaries 25,526 25,985 25,760 Insurance 2,643 2,652 2,748 Others 15,717 15,730 15,449 43,886 44,367 43,957 Total employee benefit expenses $ 47,325 $ 47,750 $ 47,407 Summary by functions Operating costs $ 25,320 $ 25,190 $ 24,725 Operating expenses 22,005 22,560 22,682 $ 47,325 $ 47,750 $ 47,407 2015 2016 Cash Cash NT$ NT$ (In Millions) Compensation distributed to the employees $ 1,928 $ 1,702 Remuneration paid to the directors 45 42 |
Reclassification Adjustments of Other Comprehensive Income (Loss) | h. Reclassification adjustments of other comprehensive income (loss) Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Unrealized gain (loss) on available-for-sale financial assets Arising during the year $ (671 ) $ (721 ) $ 605 Reclassification adjustments Upon disposal — — — Upon impairment 26 577 — $ (645 ) $ (144 ) $ 605 Cash flow hedges Gain arising during the year $ 18 $ 15 $ 3 Reclassification adjustments included in profit or loss 1 (1 ) (2 ) Adjusted against the carrying amount of hedged items (18 ) (15 ) (2 ) $ 1 $ (1 ) $ (1 ) |
Income Tax (Tables)
Income Tax (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Major Components Of Tax Expense Income [Abstract] | |
Major Components of Income Tax Expense | The major components of income tax expense were as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Current tax Current tax expenses recognized for the year $ 8,570 $ 6,736 $ 7,996 Tax on unappropriated earnings 821 (346 ) (60 ) Income tax adjustments on prior years (83 ) (22 ) (2 ) Others 15 15 10 9,323 6,383 7,944 Deferred tax Deferred tax expense recognized for the year (222 ) 1,404 (101 ) Income tax adjustments on prior years — — 6 (222 ) 1,404 (95 ) Income tax recognized in profit or loss $ 9,101 $ 7,787 $ 7,849 |
Reconciliation of Accounting Profit and Income Tax Expense | Reconciliation of accounting profit and income tax expense was as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Income before income tax $ 51,953 $ 49,413 $ 48,009 Income tax expense calculated at the statutory rate (17%) $ 8,832 $ 8,400 $ 8,162 Nondeductible revenues and expenses in determining taxable income 28 5 34 Imputed income on tax — — — Unrecognized deductible temporary differences 11 (9 ) (1 ) Unrecognized loss carryforwards 83 12 10 Tax-exempt income (183 ) (25 ) (87 ) Income tax on unappropriated earnings 821 (346 ) (60 ) Investment credits (329 ) (234 ) (212 ) Effect of different tax rates of group entities operating in other jurisdictions (94 ) (8 ) (2 ) Income tax adjustments on prior years (83 ) (22 ) 4 Others 15 14 1 Income tax expense recognized in profit or loss $ 9,101 $ 7,787 $ 7,849 |
Income Tax Expense (Benefit) Recognized in Other Comprehensive Income | b. Income tax expense (benefit) recognized in other comprehensive income Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Deferred tax Unrealized gain or loss on available-for-sale financial assets $ 2 $ (2 ) $ (3 ) Remeasurement on defined benefit plan (39 ) (347 ) (344 ) Total income tax benefit recognized in other comprehensive income $ (37 ) $ (349 ) $ (347 ) |
Current Tax Assets and Liabilities | c. Current tax assets and liabilities December 31 2016 2017 NT$ NT$ (In Millions) Current tax assets Tax refund receivable (included in other current assets - other) $ 5 $ 2 Current tax liabilities Income tax payable $ 6,522 $ 8,674 |
Movements of Deferred Income Tax Assets and Liabilities | d. Deferred income tax assets and liabilities The movements of deferred income tax assets and liabilities were as follows: For the year ended December 31, 2015 January 1, 2015 Recognized in Profit or Loss Recognized in Other Comprehensive Income From Business Combination December 31, 2015 NT$ NT$ NT$ NT$ NT$ (In Millions) Deferred Income Tax Assets Temporary differences Defined benefit obligation $ 1,096 $ 71 $ 39 $ — $ 1,206 Share of the profit of associates and joint ventures accounted for using equity method 277 48 — — 325 Allowance for doubtful receivables over quota 114 55 — — 169 Impairment loss on property, plant and equipment 32 12 — — 44 Deferred revenue 156 (20 ) — — 136 Valuation loss on inventory 41 (8 ) — — 33 Estimated warranty liabilities 19 (1 ) — — 18 Unrealized foreign exchange loss, net — 18 — — 18 Accrued award credits liabilities 28 (6 ) — — 22 Property, plant and equipment — — — 2 2 Others 34 6 — — 40 1,797 175 39 2 2,013 Loss carryforwards 29 17 — 2 48 $ 1,826 $ 192 $ 39 $ 4 $ 2,061 January 1, 2015 Recognized in Profit or Loss Recognized in Other Comprehensive Income From Business Combination December 31, 2015 NT$ NT$ NT$ NT$ NT$ (In Millions) Deferred Income Tax Liabilities Temporary differences Defined benefit obligation $ — $ (1 ) $ — $ — $ (1 ) Land value incremental tax (95 ) — — — (95 ) Intangible assets — 1 — (44 ) (43 ) Deferred revenue for award credits (5 ) 3 — — (2 ) Valuation gain or loss on financial instruments, net (3 ) — (2 ) — (5 ) Unrealized foreign exchange gain, net (29 ) 28 — — (1 ) Others — (1 ) — — (1 ) $ (132 ) $ 30 $ (2 ) $ (44 ) $ (148 ) For the year ended December 31, 2016 January 1, 2016 Recognized in Profit or Loss Recognized in Other Comprehensive Income December 31, 2016 NT$ NT$ NT$ NT$ (In Millions) Deferred Income Tax Assets Temporary differences Defined benefit obligation $ 1,206 $ (179 ) $ 347 $ 1,374 Share of profits of associates and joint ventures accounted for using equity method 325 5 — 330 Allowance for doubtful receivables over quota 169 61 — 230 Impairment loss on property, plant and equipment 44 78 — 122 Deferred revenue 136 (19 ) — 117 Valuation loss on inventory 33 (13 ) — 20 Estimated warranty liabilities 18 1 — 19 Unrealized foreign exchange loss, net 18 (18 ) — — Accrued award credits liabilities 22 (2 ) — 20 Property, plant and equipment 2 — — 2 Others 40 (6 ) — 34 2,013 (92 ) 347 2,268 Loss carryforwards 48 6 — 54 $ 2,061 $ (86 ) $ 347 $ 2,322 January 1, 2016 Recognized in Profit or Loss Recognized in Other Comprehensive Income December 31, 2016 NT$ NT$ NT$ NT$ (In Millions) Deferred Income Tax Liabilities Temporary differences Defined benefit obligation $ (1 ) $ (1,268 ) $ — $ (1,269 ) Land value incremental tax (95 ) — — (95 ) Intangible assets (43 ) 3 — (40 ) Deferred revenue for award credits (2 ) (44 ) — (46 ) Valuation gain or loss on financial instruments, net (5 ) — 2 (3 ) Unrealized foreign exchange gain, net (1 ) (9 ) — (10 ) Others (1 ) — — (1 ) $ (148 ) $ (1,318 ) $ 2 $ (1,464 ) For the year ended December 31, 2017 January 1, 2017 Recognized in Profit or Loss Recognized in Other Comprehensive Income December 31, 2017 NT$ NT$ NT$ NT$ (In Millions) Deferred Income Tax Assets Temporary differences Defined benefit obligation $ 1,374 $ 5 $ 344 $ 1,723 Share of profits of associates and joint ventures accounted for using equity method 330 1 — 331 Allowance for doubtful receivables over quota 230 59 — 289 Impairment loss on property, plant and equipment 122 (10 ) — 112 Deferred revenue 117 (11 ) — 106 Valuation loss on inventory 20 3 — 23 Estimated warranty liabilities 19 3 — 22 Unrealized foreign exchange loss, net — 17 — 17 Accrued award credits liabilities 20 (5 ) — 15 Trade-in right — 15 — 15 Property, plant and equipment 2 — — 2 Others 34 (5 ) — 29 2,268 72 344 2,684 Loss carryforwards 54 (8 ) — 46 $ 2,322 $ 64 $ 344 $ 2,730 January 1, 2017 Recognized in Profit or Loss Recognized in Other Comprehensive Income December 31, 2017 NT$ NT$ NT$ NT$ (In Millions) Deferred Income Tax Liabilities Temporary differences Defined benefit obligation $ (1,269 ) $ 4 $ — $ (1,265 ) Land value incremental tax (95 ) — — (95 ) Intangible assets (40 ) 1 — (39 ) Deferred revenue for award credits (46 ) 17 — (29 ) Valuation gain or loss on financial instruments, net (3 ) (1 ) 3 (1 ) Unrealized foreign exchange gain, net (10 ) 10 — — Others (1 ) — — (1 ) $ (1,464 ) $ 31 $ 3 $ (1,430 ) |
Items for Which No Deferred Income Tax Assets Have Been Recognized | e. Items for which no deferred income tax assets have been recognized December 31 2016 2017 NT$ NT$ (In Millions) Loss carryforwards Expire in 2018 $ 126 $ 126 Expire in 2019 138 138 Expire in 2020 42 42 Expire in 2021 13 9 Expire in 2022 1 11 Expire in 2023 1 — Expire in 2024 — — Expire in 2025 14 13 Expire in 2026 — — Expire in 2027 — 2 $ 335 $ 341 Deductible temporary differences $ 3 $ 2 |
Information About Unused Loss Carryforwards | Information about unused loss carryforwards As of December 31, 2017, unused loss carryforwards was as follows: Remaining Creditable Amount Expiry Year NT$ (In Millions) $ 126 2018 138 2019 45 2020 20 2021 12 2022 1 2023 4 2024 28 2025 10 2026 3 2027 $ 387 |
Imputation Credit Account | Imputation credit account December 31 2016 NT$ (In Millions) Balance of Imputation Credit Account (“ICA”) $ 7,691 |
Earnings Per Share (Tables)
Earnings Per Share (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Earnings Per Share [Abstract] | |
Net Income and Weighted Average Number of Common Stocks Used in Calculation of Earnings Per Share | Net income and weighted average number of common stocks used in the calculation of earnings per share were as follows: Net Income Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Net income used to compute the basic earnings per share Net income attributable to the parent $ 42,039 $ 40,485 $ 38,988 Assumed conversion of all dilutive potential common stocks Employee stock options, employee bonus and compensation of subsidiaries (1 ) (1 ) — Net income used to compute the diluted earnings per share $ 42,038 $ 40,484 $ 38,988 Weighted Average Number of Common Stocks (Millions Shares) Year Ended December 31 2015 2016 2017 Weighted average number of common stocks used to compute the basic earnings per share 7,757 7,757 7,757 Assumed conversion of all dilutive potential common stocks Employee bonus or employee compensation 19 12 11 Weighted average number of common stocks used to compute the diluted earnings per share 7,776 7,769 7,768 |
Share-based Payment Arrangeme77
Share-based Payment Arrangement (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Senao International Co., Ltd. (SENAO) [Member] | |
Statement [LineItems] | |
Share-based Compensation Plan | a. SENAO share-based compensation plan (“SENAO Plan”) described as follows: Effective Date Grant Date Stock Options Units Exercise Price (In Thousands) NT$ 2012.05.28 2013.05.07 10,000 $70.70 (Original price$93.00) |
Outstanding Stock Options | Information about SENAO’s outstanding stock options for the years ended December 31, 2015, 2016 and 2017 was as follows: Year Ended December 31, 2015 Granted on May 7, 2013 Number of Options Weighted- average Exercise Price (In Thousands) NT$ Employee stock options Options outstanding at beginning of the year 9,027 $ 84.30 Options exercised — — Options forfeited (1,240 ) — Options outstanding at end of the year 7,787 81.40 Options exercisable at end of the year 4,049 81.40 Year Ended December 31, 2016 Granted on May 7, 2013 Number of Options Weighted- average Exercise Price (In Thousands) NT$ Employee stock options Options outstanding at beginning of the year 7,787 $ 81.40 Options exercised — — Options forfeited (1,200 ) — Options outstanding at end of the year 6,587 76.10 Options exercisable at end of the year 4,947 76.10 Year Ended December 31, 2017 Granted on May 7, 2013 Number of Options Weighted- average Exercise Price (In Thousands) NT$ Employee stock options Options outstanding at beginning of the year 6,587 $ 76.10 Options exercised — — Options forfeited (661 ) — Options outstanding at end of the year 5,926 70.70 Options exercisable at end of the year 5,926 70.70 |
Employee Stock Options Outstanding | As of December 31, 2016 information about employee stock options outstanding was as follows: Options Outstanding Options Exercisable Range of Exercise Price Number of Options Weighted- average Remaining Contractual Life Weighted- average Exercise Price Number of Options Weighted- average Exercise Price NT$ (In Thousands) (Years) NT$ (In Thousands) NT$ $ 76.10 6,587 2.35 $ 76.10 4,947 $ 76.10 As of December 31, 2017 information about employee stock options outstanding was as follows: Options Outstanding Options Exercisable Range of Exercise Price Number of Options Weighted- average Remaining Contractual Life Weighted- average Exercise Price Number of Options Weighted- average Exercise Price NT$ (In Thousands) (Years) NT$ (In Thousands) NT$ $ 70.70 5,926 1.35 $ 70.70 5,926 $ 70.70 |
Assumptions used to Evaluate Options and Fair Value of Options | SENAO used the fair value method to evaluate the options using the Black-Scholes model and the related assumptions and the fair value of the options were as follows: Stock Options Granted on May 7, 2013 Grant-date share price (NT$) $ 93.00 Exercise price (NT$) $ 93.00 Dividends yield — Risk-free interest rate 0.91 % Expected life 4.375 years Expected volatility 36.22 % Weighted-average fair value of grants (NT$) $ 28.72 SENAO used the fair value method to evaluate share-based payment transaction using the Black-Scholes model and the related assumptions and the fair value of the option were as follows: Stock Options Granted on May 23 , 2017 Stock Options Granted on November 17 , 2017 Grant-date share price (NT$) $ 53.60 $ 51.00 Exercise price (NT$) $ 49.28 $ 49.28 Dividends yield — — Risk-free interest rate 0.59 % 0.59 % Expected life 9 days 14 days Expected volatility 12.35 % 9.94 % Weighted-average fair value of grants (NT$) $ 4.33 $ 1.75 |
CHIEF Telecom Inc. (CHIEF) [Member] | |
Statement [LineItems] | |
Share-based Compensation Plan | c . CHIEF share-based compensation plan (“CHIEF Plan”) described as follows: Effective Date Grant Date Stock Options Units Exercise Price NT$ 2015.10.22 2015.10.22 2,000 $34.40 (Original price$43.00) 2017.12.18 2017.12.19 950 147.00 |
Outstanding Stock Options | Information about CHIEF’s outstanding stock options for the years ended December 31, 2015, 2016 and 2017 was as follows: For the year ended December 31 2015 2016 Granted on October 22, 2015 Granted on October 22, 2015 Number of Options Weighted Average Exercise Price (NT$) Number of Options Weighted Average Exercise Price (NT$) Employee stock options Options outstanding at beginning of the year — $ — 2,000 $ 43.00 Options granted 2,000 43.00 — — Options forfeited — — (52 ) — Options outstanding at end of the year 2,000 43.00 1,948 34.40 Option exercisable at end of the year — — — — For the year ended December 31 2017 Granted on October 22, 2015 Granted on December 19, 2017 Number of Options Weighted Average Exercise Price (NT$) Number of Options Weighted Average Exercise Price (NT$) Employee stock options Options outstanding at beginning of the year 1,948 $ 34.40 — $ — Options granted — — 950 147.00 Options forfeited (12 ) — — — Options outstanding at end of the year 1,936 34.40 950 147.00 Option exercisable at end of the year 968 34.40 — — |
Employee Stock Options Outstanding | As of December 31, 2016, information about employee stock options outstanding was as follows: Granted on October 22, 2015 Options Outstanding Options Exercisable Range of Exercise Price Number of Options Weighted Average Remaining Contractual Life Weighted Average Exercise Price Number of Options Weighted Average Exercise Price NT$ (Years) NT$ NT$ $ 34.40 1,948 3.81 $ 34.40 — $ — As of December 31, 2017, information about employee stock options outstanding was as follows: Granted on October 22, 2015 Options Outstanding Options Exercisable Range of Exercise Price Number of Options Weighted Average Remaining Contractual Life Weighted Average Exercise Price Number of Options Weighted Average Exercise Price NT$ (Years) NT$ NT$ $ 34.40 1,936 2.81 $ 34.40 968 $ 34.40 Granted on December 19, 2017 Options Outstanding Options Exercisable Range of Exercise Price Number of Options Weighted Average Remaining Contractual Life Weighted Average Exercise Price Number of Options Weighted Average Exercise Price NT$ (Years) NT$ NT$ $ 147.00 950 4.96 $ 147.00 — $ — |
Assumptions used to Evaluate Options and Fair Value of Options | CHIEF used the fair value method to evaluate the options using the Black-Scholes model and binomial option pricing model and the related assumptions and the fair value of the options were as follows: Stock Options Granted on October 22, 2015 Stock Options Granted on December 19, 2017 Grant-date share price (NT$) $ 39.55 $ 95.92 Exercise price (NT$) $ 43.00 $ 147.00 Dividends yield — — Risk-free interest rate 0.86 % 0.62 % Expected life 5 years 5 years Expected volatility 21.02 % 17.35 % Weighted average fair value of grants (NT$) $ 4,863 $ 2,318 |
Chunghwa Precision Test Tech. Co., Ltd. (CHPT) [Member] | |
Statement [LineItems] | |
Assumptions used to Evaluate Options and Fair Value of Options | CHPT used the fair value method to evaluate the options granted to employees on March 10, 2016 using the Black-Scholes model and the related assumptions and the fair value of the options were as follows: Stock Options Granted on March 10, 2016 Grant-date share price (NT$) $ 302.46 Exercise price (NT$) $ 360.00 Dividends yield — Risk-free interest rate 0.37 % Expected life 12 days Expected volatility 37.43 % Weighted average fair value of grants (NT$) $ 0.04 CHPT used the fair value method to evaluate the options granted to employees on September 18, 2017 using the Black-Scholes model and the related assumptions and the fair value of the options were as follows: Stock Options Granted on September 18, 2017 Grant-date share price (NT$) $ 1,295.00 Exercise price (NT$) $ 1,267.33 Dividends yield — Risk-free interest rate 0.35 % Expected life 4 days Expected volatility 28.30 % Weighted average fair value of grants (NT$) $ 31.60 |
Non-cash Transactions (Tables)
Non-cash Transactions (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Noncash Investing Activities [Abstract] | |
Non-cash Investing Activities | For the years ended December 31, 2015, 2016 and 2017, the Company entered into the following non-cash investing activities : Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Increase in property, plant and equipment $ 24,451 $ 24,591 $ 26,069 Other payables 633 (1,074 ) 806 $ 25,084 $ 23,517 $ 26,875 |
Operating Lease Arrangements (T
Operating Lease Arrangements (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Finance Lease And Operating Lease By Lessor [Abstract] | |
Future Aggregate Minimum Lease Payments Under Non-cancellable Operating Leases | The future aggregate minimum lease payments under non-cancellable operating leases are as follows: December 31 2016 2017 NT$ NT$ (In Millions) Within one year $ 2,811 $ 2,918 Longer than one year but within five years 5,450 5,796 Longer than five years 960 779 $ 9,221 $ 9,493 |
Future Aggregate Minimum Lease Collection Under Non-cancellable Operating Leases | The future aggregate minimum lease collection under non-cancellable operating leases are as follows: December 31 2016 2017 NT$ NT$ (In Millions) Within one year $ 427 $ 353 Longer than one year but within five years 600 659 Longer than five years 321 243 $ 1,348 $ 1,255 |
Financial Instruments (Tables)
Financial Instruments (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure of detailed information about financial instruments [Line Items] | |
Summary of Categories of Financial Instruments | Categories of Financial Instruments December 31 2016 2017 NT$ NT$ (In Millions) Financial assets Measured at FVTPL Held for trading $ — $ — Held-to-maturity financial assets 2,140 — Loans and receivables (Note a) 70,040 68,983 Available-for-sale financial assets 4,764 5,751 Financial liabilities Measured at FVTPL Held for trading 1 1 Hedging derivative financial liabilities 1 1 Measured at amortized cost (Note b) 40,553 39,725 Note a: The balances included cash and cash equivalents, trade notes and accounts receivable, receivables from related parties, other current monetary assets, other financial assets and refundable deposits (classified as other noncurrent assets) which were loans and receivables. Please refer to Notes 7, 11, 14, 20 and 40. Note b: The balances included short-term loans, trade notes and accounts payable, payables to related parties, partial other payables, customers’ deposits and long-term loans which were financial liabilities carried at amortized cost. Please refer to Notes 22, 23, 24, 25 and 40. |
Remaining Contractual Maturity for Non-derivative Financial Liabilities | The following tables detailed the Company’s remaining contractual maturity for its non-derivative financial liabilities with agreed repayment periods. The tables had been drawn up based on the undiscounted cash flows of financial liabilities based on the earliest date on which the Company is required to pay. Weighted Average Effective Interest Rate (%) Less Than 1 Month 1-3 Months 3 Months to 1 Year 1-5 Years More than 5 Year Total NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) December 31, 2016 Non-derivative financial liabilities Non-interest bearing — $ 43,975 $ — $ 2,015 $ 4,610 $ — $ 50,600 Floating interest rate instruments 1.00 — 38 100 1,600 — 1,738 $ 43,975 $ 38 $ 2,115 $ 6,210 $ — $ 52,338 December 31, 2017 Non-derivative financial liabilities Non-interest bearing — $ 41,884 $ — $ 3,197 $ 4,671 $ — $ 49,752 Floating interest rate instruments 0.97 50 — 20 1,600 — 1,670 $ 41,934 $ — $ 3,217 $ 6,271 $ — $ 51,422 |
Liquidity Analysis for Derivative Financial Instruments | The following table detailed the Company’s liquidity analysis for its derivative financial instruments. The table had been drawn up based on the undiscounted gross inflows and outflows on those derivatives that require gross settlement. Less Than 1 Month 1-3 Months 3 Months to 1 Year 1-5 Years Total NT$ NT$ NT$ NT$ NT$ (In Millions) December 31, 2016 Gross settled Forward exchange contracts Inflows $ 55 $ 267 $ — $ — $ 322 Outflows 55 269 — — 324 $ — $ (2 ) $ — $ — $ (2 ) December 31, 2017 Gross settled Forward exchange contracts Inflows $ 125 $ 173 $ 36 $ — $ 334 Outflows 126 174 36 — 336 $ (1 ) $ (1 ) $ — $ — $ (2 ) |
Financing Facilities | 2) Financing facilities December 31 2016 2017 NT$ NT$ (In Millions) Unsecured bank loan facility Amount used $ 118 $ 90 Amount unused 46,219 45,749 $ 46,337 $ 45,839 Secured bank loan facility Amount used $ 1,620 $ 1,600 Amount unused 200 1,910 $ 1,820 $ 3,510 |
Foreign currency risk [Member] | |
Disclosure of detailed information about financial instruments [Line Items] | |
Carrying Amounts of Assets and Liabilities Related to Market Risk | 1) Foreign currency risk The carrying amounts of the Company’s foreign currency denominated monetary assets and monetary liabilities at the balance sheet dates were as follows: December 31 2016 2017 NT$ NT$ (In Millions) Assets USD $ 5,327 $ 5,584 EUR 14 28 SGD 106 63 RMB 30 3 JPY 13 36 Liabilities USD 4,238 4,964 EUR 968 1,323 SGD 1 96 RMB — — JPY 10 12 The carrying amounts of the Company’s derivatives with exchange rate risk exposures at the balance sheet dates were as follows: December 31 2016 2017 NT$ NT$ (In Millions) Assets USD $ — $ — Liabilities USD — — EUR 2 1 |
Foreign Currency Risk Sensitivity Analysis | The following table details the Company’s sensitivity to a 5% increase and decrease in the functional currency against the relevant foreign currencies. 5% is the sensitivity rate used when reporting foreign currency risk internally to key management personnel and represents management’s assessment of the reasonably possible changes in foreign exchange rates. The sensitivity analysis includes only outstanding foreign currency denominated monetary items and forward exchange contracts. A positive number below indicates an increase in pre-tax profit or equity where the functional currency weakens 5% against the relevant currency. Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Profit or loss Monetary assets and liabilities (a) USD $ 21 $ 54 $ 31 EUR (62 ) (48 ) (65 ) SGD 5 5 (2 ) RMB 2 1 — JPY 12 — 1 Derivatives (b) USD 1 3 6 EUR 33 8 3 Equity Derivatives (c) EUR 15 5 7 a) This is mainly attributable to the exposure to foreign currency denominated receivables and payables of the Company outstanding at the balance sheet dates. b) This is mainly attributable to the forward exchange contracts. c) This is mainly attributable to the changes in the fair value of derivatives that are designated as cash flow hedges. |
Interest rate risk [Member] | |
Disclosure of detailed information about financial instruments [Line Items] | |
Carrying Amounts of Assets and Liabilities Related to Market Risk | The carrying amounts of the Company’s exposures to interest rates on financial assets and financial liabilities at the balance sheet dates were as follows: December 31 2016 2017 NT$ NT$ (In Millions) Fair value interest rate risk Financial assets $ 28,303 $ 25,911 Cash flow interest rate risk Financial assets 6,582 6,715 Financial liabilities 1,738 1,670 |
Fair Value Information (Tables)
Fair Value Information (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Not measured at fair value [Member] | |
Disclosure of fair value measurement of assets and liabilities [Line Items] | |
Carrying Amounts And Fair Value of Financial Assets and Liabilities | Except for what disclosed in the following table, the Company considers that the carrying amounts of financial assets and liabilities not measured at fair value approximate their fair values or the fair values cannot be reliable estimated: December 31, 2016 Carrying Fair Value Amount Level 1 Level 2 Level 3 Held-to-maturity financial assets Corporate bonds $ 1,990 $ — $ 1,996 $ — Bank debentures 150 — 150 — $ 2,140 $ — $ 2,146 $ — The Level 2 fair values are estimated using discounted cash flow models. The models use market-based observable inputs including duration, yield rate and credit rating. |
Fair value on a recurring basis [Member] | |
Disclosure of fair value measurement of assets and liabilities [Line Items] | |
Carrying Amounts And Fair Value of Financial Assets and Liabilities | b. Financial instruments that are measured at fair value on a recurring basis December 31, 2016 Level 1 Level 2 Level 3 Total Financial assets at FVTPL Derivative $ — $ — $ — $ — Available-for-sale financial assets Listed securities Equity investments $ 2,521 $ — $ — $ 2,521 Financial liabilities at FVTPL Derivative $ — $ 1 $ — $ 1 Hedging derivative financial liabilities $ — $ 1 $ — $ 1 December 31, 2017 Level 1 Level 2 Level 3 Total Available-for-sale financial assets Listed securities Equity investments $ 3,125 $ — $ — $ 3,125 Financial liabilities at FVTPL Derivative $ — $ 1 $ — $ 1 Hedging derivative financial liabilities $ — $ 1 $ — $ 1 |
Related Parties Transactions (T
Related Parties Transactions (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Related Party Transactions [Abstract] | |
Summary of Related Parties | a. The Company engages in business transactions with the following related parties: Company Relationship Taiwan International Standard Electronics Co., Ltd. Associate So-net Entertainment Taiwan Limited Associate Skysoft Co., Ltd. Associate KingwayTek Technology Co., Ltd. Associate Dian Zuan Integrating Marketing Co., Ltd. Associate Taiwan International Ports Logistics Corporation Associate Huada Digital Corporation Joint venture Chunghwa Benefit One Co., Ltd. Joint venture International Integrated System, Inc. Associate Senao Networks, Inc. Associate EnGenius Tech. Co., Ltd. Associate HopeTech Technologies Limited Associate ST-2 Satellite Ventures Pte., Ltd. Associate Viettel-CHT Co., Ltd. Associate Click Force Co., Ltd. Associate 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 E-Life Mall Co., Ltd. One of the directors of E-Life Mall and a director of SENAO are members of an immediate family Engenius Technologies Co., Ltd. Chairman of Engenius Technologies Co., Ltd. is a member of SENAO’s management United Daily News Co., Ltd. Investor of significant influence over SFD Shenzhen Century Communication Co., Ltd. Investor of significant influence over SCT |
Details of Transactions Between the Company and Other Related Parties | 1) Operating transactions Revenues Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Associates $ 333 $ 292 $ 344 Joint ventures 9 7 1 Others 81 49 65 $ 423 $ 348 $ 410 Operating Costs and Expenses Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Associates $ 1,451 $ 1,405 $ 1,197 Joint ventures 17 17 2 Others 62 74 71 $ 1,530 $ 1,496 $ 1,270 2) Non-operating transactions Non-operating Income and Expenses Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Associates $ 36 $ 37 $ 32 Others — — — $ 36 $ 37 $ 32 3) Receivables December 31 2016 2017 NT$ NT$ (In Millions) Associates $ 9 $ 43 Joint ventures — — Others 5 6 $ 14 $ 49 4) Payables December 31 2016 2017 NT$ NT$ (In Millions) Associates $ 757 $ 680 Joint ventures 1 — Others 4 4 $ 762 $ 684 5) Customers’ deposits December 31 2016 2017 NT$ NT$ (In Millions) Associates $ 10 $ 6 Joint ventures 1 — $ 11 $ 6 6) Acquisition of property, plant and equipment Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Associates $ 314 $ 313 $ 390 Joint ventures 11 7 — $ 325 $ 320 $ 390 The prepaid rents (classified as prepayments) as of December 31, 2016 and 2017, were as follows: December 31 2016 2017 NT$ NT$ (In Millions) Prepaid rents - current $ 204 $ 204 Prepaid rents - noncurrent 1,755 1,551 $ 1,959 $ 1,755 |
Compensation of Directors and Other Key Management Personnel | c. Compensation of key management personnel The compensation of directors and other key management personnel for the years ended December 31, 2015, 2016 and 2017 were as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Short-term employee benefits $ 212 $ 251 $ 254 Post-employment benefits 9 8 9 Share-based payment 3 2 2 $ 224 $ 261 $ 265 |
Pledged Assets (Tables)
Pledged Assets (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Subclassifications Of Assets Liabilities And Equities [Abstract] | |
Assets Pledged as Collaterals | The following assets are pledged as collaterals for bank loans and custom duties of the imported materials. December 31 2016 2017 NT$ NT$ (In Millions) Property, plant and equipment $ 2,580 $ 2,550 Land held under development (included in inventories) 1,999 1,999 Restricted assets (included in other assets - others) 21 3 $ 4,600 $ 4,552 |
Segment Information (Tables)
Segment Information (Tables) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Operating Segments [Abstract] | |
Analysis by Reportable Segment of Revenue and Operating Results of Continuing Operations | Analysis by reportable segment of revenue and operating results of continuing operations was as follows: Domestic Fixed Communi- cations Business Mobile Communi- cations Business Internet Business International Fixed Communi- cations Business Others Total NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Year ended December 31, 2015 Revenues From external customers $ 72,535 $ 114,877 $ 25,777 $ 15,460 $ 3,146 $ 231,795 Intersegment revenues 21,401 3,475 4,701 2,120 3,214 34,911 Segment revenues $ 93,936 $ 118,352 $ 30,478 $ 17,580 $ 6,360 266,706 Intersegment elimination (34,911 ) Consolidated revenues $ 231,795 Segment income before income tax $ 23,231 $ 19,394 $ 9,918 $ 1,120 $ (1,710 ) $ 51,953 Year ended December 31, 2016 Revenues From external customers $ 72,784 $ 110,801 $ 28,100 $ 14,434 $ 3,872 $ 229,991 Intersegment revenues 22,669 2,530 4,734 2,680 4,122 36,735 Segment revenues $ 95,453 $ 113,331 $ 32,834 $ 17,114 $ 7,994 266,726 Intersegment elimination (36,735 ) Consolidated revenues $ 229,991 Segment income before income tax $ 25,658 $ 13,926 $ 10,729 $ 1,098 $ (1,998 ) $ 49,413 Year ended December 31, 2017 Revenues From external customers $ 71,137 $ 109,376 $ 28,917 $ 13,552 $ 4,532 $ 227,514 Intersegment revenues 22,515 2,031 4,209 2,375 4,600 35,730 Segment revenues $ 93,652 $ 111,407 $ 33,126 $ 15,927 $ 9,132 263,244 Intersegment elimination (35,730 ) Consolidated revenues $ 227,514 Segment income before income tax $ 24,888 $ 12,433 $ 11,118 $ 1,029 $ (1,459 ) $ 48,009 |
Other Segment Information | Other information reviewed by the chief operating decision maker or regularly provided to the chief operating decision maker was as follows: For the year ended December 31, 2015 Domestic Fixed Communi-cations Business Mobile Communi-cations Business Internet Business International Fixed Communi-cations Business Others Total NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Share of the profit of associates and joint ventures accounted for using equity method $ — $ — $ — $ — $ 897 $ 897 Interest income $ 19 $ 19 $ 11 $ 2 $ 255 $ 306 Interest expenses $ — $ 10 $ — $ — $ 23 $ 33 Operating costs and expenses $ 64,960 $ 81,213 $ 12,062 $ 14,411 $ 8,683 $ 181,329 Depreciation and amortization $ 17,487 $ 10,444 $ 3,611 $ 1,536 $ 370 $ 33,448 Capital expenditure $ 10,196 $ 8,596 $ 4,795 $ 968 $ 529 $ 25,084 Impairment loss on property, plant and equipment $ 22 $ 116 $ — $ — $ — $ 138 Reversal of impairment loss on investment properties $ 142 $ — $ — $ — $ — $ 142 For the year ended December 31, 2016 Domestic Fixed Communi- cations Business Mobile Communi- cations Business Internet Business International Fixed Communi- cations Business Others Total NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Share of the profit of associates and joint ventures accounted for using equity method $ — $ — $ — $ — $ 515 $ 515 Interest income $ 15 $ 11 $ 7 $ 6 $ 150 $ 189 Interest expenses $ — $ 2 $ — $ — $ 18 $ 20 Operating costs and expenses $ 64,230 $ 79,593 $ 13,160 $ 14,313 $ 10,094 $ 181,390 Depreciation and amortization $ 16,414 $ 10,620 $ 3,626 $ 1,451 $ 374 $ 32,485 Capital expenditure $ 9,846 $ 8,981 $ 2,718 $ 1,136 $ 836 $ 23,517 Impairment loss on property, plant and equipment $ — $ 596 $ — $ — $ — $ 596 Reversal of impairment loss on investment properties $ 148 $ — $ — $ — $ — $ 148 For the year ended December 31, 2017 Domestic Fixed Communi- cations Business Mobile Communi- cations Business Internet Business International Fixed Communi- cations Business Others Total NT$ NT$ NT$ NT$ NT$ NT$ (In Millions) Share of the profit of associates and joint ventures accounted for using equity method $ — $ — $ — $ — $ 419 $ 419 Interest income $ 21 $ 15 $ 9 $ 15 $ 145 $ 205 Interest expenses $ — $ 6 $ — $ — $ 16 $ 22 Operating costs and expenses $ 62,795 $ 80,275 $ 13,288 $ 13,385 $ 10,963 $ 180,706 Depreciation and amortization $ 15,614 $ 11,001 $ 3,385 $ 1,477 $ 453 $ 31,930 Capital expenditure $ 11,647 $ 9,742 $ 2,779 $ 1,580 $ 1,127 $ 26,875 Impairment loss on property, plant and equipment $ — $ — $ — $ — $ — $ — Reversal of impairment loss on investment properties $ 11 $ — $ — $ — $ — $ 11 |
Main Products and Service Revenues | The following is an analysis of the Company’s revenue from its major products and services. Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Mobile services revenue $ 80,867 $ 78,788 $ 75,823 Local telephone and domestic long distance telephone services revenue 36,690 34,531 32,247 Sales of product 36,509 35,377 37,649 Broadband access and domestic leased line services revenue 23,711 23,315 22,950 Data communications internet services revenue 17,455 20,906 21,143 International network and leased telephone services revenue 11,319 10,634 9,328 Others 25,244 26,440 28,374 $ 231,795 $ 229,991 $ 227,514 |
Geographic Information | The geographic information for revenues was as follows: Year Ended December 31 2015 2016 2017 NT$ NT$ NT$ (In Millions) Taiwan, ROC $ 220,917 $ 218,933 $ 217,568 Overseas 10,878 11,058 9,946 $ 231,795 $ 229,991 $ 227,514 |
General - Additional Informatio
General - Additional Information (Detail) | 12 Months Ended |
Dec. 31, 2017 | |
General Information [Abstract] | |
Description of percentage of ownership interes | below 50% |
Summary of Significant Accoun86
Summary of Significant Accounting Policies - Detail Information of Subsidiaries (Detail) | 12 Months Ended | ||||||
Dec. 31, 2017 | Mar. 31, 2018 | Nov. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Jan. 01, 2015 | |
Light Era Development Co., Ltd. (LED) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Planning and development of real estate and intelligent buildings, and property management | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Donghwa Telecom Co., Ltd. (DHT) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | International private leased circuit, IP VPN service, and IP transit services | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa Telecom Singapore Pte., Ltd. (CHTS) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | International private leased circuit, IP VPN service, and IP transit services | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa System Integration Co., Ltd. (CHSI) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Providing system integration services and telecommunications equipment | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa Investment Co., Ltd. (CHI) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Investment | ||||||
Percentage of Ownership | 89.00% | 89.00% | |||||
CHIEF Telecom Inc. (CHIEF) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Network integration, internet data center (“IDC”), communications integration and cloud application services | ||||||
Percentage of Ownership | 67.00% | 69.00% | |||||
CHYP Multimedia Marketing & Communications Co., Ltd. (“CHYP”) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Digital information supply services and advertisement services | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Prime Asia Investments Group Ltd. (B.V.I.) (Prime Asia) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Investment | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Spring House Entertainment Tech. Inc. (SHE) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Digital entertainment contents production, animated character licensing and endorsement, and mobile digital platform construction | ||||||
Percentage of Ownership | 56.00% | 56.00% | |||||
Chunghwa Telecom Global, Inc. ("CHTG") [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | International private leased circuit, internet services, and transit services | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa Telecom Vietnam Co., Ltd. (CHTV) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Intelligent energy saving solutions, international circuit, and information and communication technology (“ICT”) services | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Smartfun Digital Co., Ltd. (SFD) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Providing diversified family education digital services | ||||||
Percentage of Ownership | 65.00% | 65.00% | |||||
Chunghwa Telecom Japan Co., Ltd. (CHTJ) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | International private leased circuit, IP VPN service, and IP transit services | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa Sochamp Technology Inc. (CHST) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Design, development and production of Automatic License Plate Recognition software and hardware | ||||||
Percentage of Ownership | 51.00% | 51.00% | |||||
Honghwa International Co., Ltd. (HHI) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Telecommunication engineering, sales agent of mobile phone plan application and other business services | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa Leading Photonics Tech Co., Ltd. (CLPT) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Production and sale of electronic components and finished products | ||||||
Percentage of Ownership | 75.00% | 75.00% | |||||
Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | International private leased circuit, IP VPN service, ICT and cloud VAS services | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
New Prospect Investments Holdings Ltd. (B.V.I.) (New Prospect) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Investment | ||||||
Percentage of Ownership | 100.00% | ||||||
Chunghwa Telecom Security Co Ltd [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | 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 | ||||||
Percentage of Ownership | 80.00% | ||||||
Chunghwa Telecom Co., Ltd. [Member] | Senao International Co., Ltd. (SENAO) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Handset and peripherals retailer; sales of CHT mobile phone plans as an agent | ||||||
Percentage of Ownership | 28.93% | 29.00% | |||||
Chunghwa Telecom Co., Ltd. [Member] | CHIEF Telecom Inc. (CHIEF) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Percentage of Ownership | 70.43% | 69.31% | |||||
Senao International Co., Ltd. (SENAO) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Percentage of Ownership | 29.31% | 28.18% | |||||
Senao International Co., Ltd. (SENAO) [Member] | Senao International (Samoa) Holding Ltd. (SIS) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | International investment | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Senao International Co., Ltd. (SENAO) [Member] | Youth Co., Ltd. (Youth) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Sale of information and communication technologies products | ||||||
Percentage of Ownership | 89.00% | 89.00% | |||||
Senao International Co., Ltd. (SENAO) [Member] | Aval Technologies Co., Ltd. (Aval) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Sale of information and communication technologies products | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Senao International Co., Ltd. (SENAO) [Member] | SENYOUNG Insurance Agent Co., Ltd. [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Property and liability insurance agency | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Youth Co., Ltd. (Youth) [Member] | ISPOT Co., Ltd. (ISPOT) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Sale of information and communication technologies products | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Youth Co., Ltd. (Youth) [Member] | Youyi Co., Ltd. (Youyi) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Maintenance of information and communication technologies products | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
CHIEF Telecom Inc. (CHIEF) [Member] | Unigate Telecom Inc. (Unigate) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Telecommunications and internet service | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
CHIEF Telecom Inc. (CHIEF) [Member] | Chief International Corp. (CIC) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Telecommunications and internet service | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
CHIEF Telecom Inc. (CHIEF) [Member] | Shanghai Chief Telecom Co., Ltd. (SCT) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Telecommunications and internet service | ||||||
Percentage of Ownership | 49.00% | 49.00% | |||||
Chunghwa System Integration Co., Ltd. (CHSI) [Member] | Concord Technology Co., Ltd. (Concord) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Investment | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Spring House Entertainment Tech. Inc. (SHE) [Member] | Ceylon Innovation Co., Ltd. (CEI) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | E-book publishing and copyright negotiation of digital music | ||||||
Chunghwa Investment Co., Ltd. (CHI) [Member] | Chunghwa Precision Test Tech. Co., Ltd. (CHPT) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Production and sale of semiconductor testing components and printed circuit board | ||||||
Percentage of Ownership | 38.00% | 41.00% | |||||
Chunghwa Investment Co., Ltd. (CHI) [Member] | Chunghwa Investment Holding Co., Ltd. (CIHC) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Investment | ||||||
Concord Technology Co., Ltd. (Concord) [Member] | Glory Network System Service (Shanghai) Co., Ltd. (GNSS (Shanghai) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Design, development and production of computer and internet software, installment, maintenance and consulting services of information system integration, and sales of self-production products | ||||||
Percentage of Ownership | 100.00% | ||||||
Chunghwa Precision Test Tech. Co., Ltd. (CHPT) [Member] | Chunghwa Precision Test Tech. USA Corporation (CHPT (US) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Design and after-sale services of semiconductor testing components and printed circuit board | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa Precision Test Tech. Co., Ltd. (CHPT) [Member] | CHPT Japan Co., Ltd. (CHPT (JP) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Related services of electronic parts, machinery processed products and printed circuit board | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa Precision Test Tech. Co., Ltd. (CHPT) [Member] | Chunghwa Precision Test Tech. International Ltd. ("CHPT (International)") [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Wholesale and retail of electronic materials, and investment | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Senao International (Samoa) Holding Ltd. (SIS) [Member] | Senao International HK Limited (SIHK) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | International investment | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa Investment Holding Co., Ltd. (CIHC) [Member] | CHI One Investment Co., Limited (COI) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Investment | ||||||
Prime Asia Investments Group Ltd. (B.V.I.) (Prime Asia) [Member] | Chunghwa Hsingta Co., Ltd. ("CHC") [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Investment | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Senao International HK Limited (SIHK) [Member] | Senao Trading (Fujian) Co., Ltd. (STF) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Sale of information and communication technologies products | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Senao International HK Limited (SIHK) [Member] | Senao International Trading (Shanghai) Co., Ltd. (SITS) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Sale of information and communication technologies products | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Senao International HK Limited (SIHK) [Member] | Senao International Trading (Shanghai) Co Ltd (SEITS) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Maintenance of information and communication technologies products | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Senao International HK Limited (SIHK) [Member] | Senao International Trading (Jiangsu) Co., Ltd. (SITJ) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Sale of information and communication technologies products | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa Hsingta Co., Ltd. ("CHC") [Member] | Chunghwa Telecom (China) Co., Ltd. ("CTC") [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Integrated information and communication solution services for enterprise clients, and intelligent energy network service | ||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa Hsingta Co., Ltd. ("CHC") [Member] | Jiangsu Zhenhua Information Technology Company, LLC. ("JZIT") [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Providing intelligent energy saving solution and intelligent buildings services | ||||||
Percentage of Ownership | 75.00% | 75.00% | |||||
Chunghwa Precision Test Tech. International Ltd. ("CHPT (International)") [Member] | Shanghai Taihua Electronic Technology Limited ("STET") [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Main Businesses and Products | Design of printed circuit board and related consultation service | ||||||
Percentage of Ownership | 100.00% | 100.00% |
Summary of Significant Accoun87
Summary of Significant Accounting Policies - Detail Information of Subsidiaries (Parenthetical) (Detail) | Mar. 31, 2018 | Dec. 31, 2017 | Nov. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Jan. 01, 2015 |
CHIEF Telecom Inc. (CHIEF) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Percentage of Ownership | 67.00% | 69.00% | |||||
Chunghwa Leading Photonics Tech Co., Ltd. (CLPT) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Percentage of Ownership | 75.00% | 75.00% | |||||
Chunghwa Telecom (Thailand) Co., Ltd. (“CHTT”) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa Telecom Security Co Ltd [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Percentage of Ownership | 80.00% | ||||||
Chunghwa Telecom Co., Ltd. [Member] | Senao International Co., Ltd. (SENAO) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Percentage of Ownership | 28.93% | 29.00% | |||||
Chunghwa Telecom Co., Ltd. [Member] | CHIEF Telecom Inc. (CHIEF) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Percentage of Ownership | 69.31% | 70.43% | |||||
Senao International Co., Ltd. (SENAO) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Percentage of Ownership | 29.31% | 28.18% | |||||
Senao International Co., Ltd. (SENAO) [Member] | SENYOUNG Insurance Agent Co., Ltd. [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Percentage of Ownership | 100.00% | 100.00% | |||||
Chunghwa Investment Co., Ltd. (CHI) [Member] | Chunghwa Precision Test Tech. Co., Ltd. (CHPT) [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Percentage of Ownership | 38.30% | 38.30% | |||||
Light Era Development Co., Ltd. (LED) [Member] | Taoyuan Asia Silicon Valley Innovation Co., Ltd [Member] | |||||||
Disclosure of subsidiaries [Line Items] | |||||||
Percentage of Ownership | 60.00% |
Summary of Significant Accoun88
Summary of Significant Accounting Policies - Additional information (Detail) | 12 Months Ended | |
Dec. 31, 2017 | Dec. 31, 2016 | |
Disclosure of subsidiaries [Line Items] | ||
Income tax percentage on undistributed earnings | 10.00% | |
CHIEF Telecom Inc. (CHIEF) [Member] | ||
Disclosure of subsidiaries [Line Items] | ||
Percentage of Ownership | 67.00% | 69.00% |
Chunghwa Investment Co., Ltd. (CHI) [Member] | CHIEF Telecom Inc. (CHIEF) [Member] | ||
Disclosure of subsidiaries [Line Items] | ||
Percentage of Ownership | 3.53% | |
Chunghwa Investment Co., Ltd. (CHI) [Member] | Senao International Co., Ltd. (SENAO) [Member] | ||
Disclosure of subsidiaries [Line Items] | ||
Percentage of Ownership | 0.40% |
Application of New and Amende89
Application of New and Amended International Financial Reporting Standards - Schedule of Anticipated Significant Impact on Assets, Liabilities and Equity When Retrospectively Applying IRFS 15 (Detail) $ in Millions, $ in Millions | Jan. 01, 2018TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure Of Initial Application Of Standards Or Interpretations [Line Items] | ||||
Contract assets - current | $ 6,998 | $ 0 | ||
Contract assets - noncurrent | 3,917 | 0 | ||
Incremental costs to obtain a contract | 2,467 | 0 | ||
Contract liability - current | 197 | 0 | ||
Contract liability - noncurrent | 86 | 0 | ||
Current tax liabilities | 10,901 | 8,674 | $ 293 | $ 6,522 |
Total effect on equity (unappropriated earnings) | 65,505 | $ 54,633 | ||
Increase (decrease) due to application of IFRS 15 [member] | ||||
Disclosure Of Initial Application Of Standards Or Interpretations [Line Items] | ||||
Contract assets - current | 6,998 | |||
Contract assets - noncurrent | 3,917 | |||
Incremental costs to obtain a contract | 2,467 | |||
Total effect on assets | 13,382 | |||
Contract liability - current | 197 | |||
Contract liability - noncurrent | 86 | |||
Current tax liabilities | 2,227 | |||
Total effect on liabilities | 2,510 | |||
Total effect on equity (unappropriated earnings) | $ 10,872 |
Application of New and Amende90
Application of New and Amended International Financial Reporting Standards - Schedule of Anticipated Significant Impact on Assets, Liabilities and Equity of Retrospective Application of IFRS 9 (Detail) $ in Millions, $ in Millions | Jan. 01, 2018TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Impact on assets, liabilities and equity | ||||
Financial assets at fair value through profit or loss - noncurrent | $ 54 | $ 0 | ||
Financial assets at fair value through other comprehensive income - noncurrent | 7,539 | 0 | ||
Available-for-sale financial assets - noncurrent | 0 | 5,751 | $ 194 | $ 4,764 |
Total effect on liabilities (deferred income tax liabilities) | 1,429 | 1,430 | ||
Unrealized gain or loss on available-for-sale financial assets | 0 | 558 | ||
Unrealized gain or loss on financial assets at fair value through other comprehensive income | 883 | 0 | ||
Unappropriated earnings | 56,155 | 54,633 | 1,843 | 55,657 |
Noncontrolling interests | 8,470 | $ 8,474 | $ 286 | $ 6,272 |
Increase decrease due to application of IFRS 9 [Member] | ||||
Impact on assets, liabilities and equity | ||||
Financial assets at fair value through profit or loss - noncurrent | 54 | |||
Financial assets at fair value through other comprehensive income - noncurrent | 7,539 | |||
Available-for-sale financial assets - noncurrent | (5,751) | |||
Total effect on assets | 1,842 | |||
Total effect on liabilities (deferred income tax liabilities) | (1) | |||
Unrealized gain or loss on available-for-sale financial assets | (558) | |||
Unrealized gain or loss on financial assets at fair value through other comprehensive income | 883 | |||
Unappropriated earnings | 1,522 | |||
Noncontrolling interests | (4) | |||
Total effect on equity | $ 1,843 |
U.S. Dollar Amounts - Additiona
U.S. Dollar Amounts - Additional Information (Detail) | Dec. 29, 2017TWD ($) |
Foreign Exchange Rates [Abstract] | |
Exchange rate used for convenience translations | 29.64 |
Cash and Cash Equivalents - Sum
Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2016USD ($) | Dec. 31, 2015TWD ($) | Dec. 31, 2014TWD ($) |
Cash | ||||||
Cash on hand | $ 383 | $ 370 | ||||
Bank deposits | 7,877 | 7,240 | ||||
Cash | 8,260 | 7,610 | ||||
Cash equivalents (investments with maturities of less than three months) | ||||||
Commercial paper | 10,179 | 11,436 | ||||
Negotiable certificate of deposit | 7,950 | 10,800 | ||||
Time deposits | 2,436 | 1,254 | ||||
Cash equivalents | 20,565 | 23,490 | ||||
Cash and cash equivalents | $ 28,825 | $ 973 | $ 31,100 | $ 1,049 | $ 30,271 | $ 23,560 |
Cash and Cash Equivalents - Ann
Cash and Cash Equivalents - Annual Yield Rates of Bank Deposits, Commercial Paper, Negotiable Certificate of Deposit and Time Deposits (Detail) | Dec. 31, 2017 | Dec. 31, 2016 |
Bank deposits [Member] | Bottom of range [Member] | ||
Disclosure of cash and cash equivalents [Line Items] | ||
Yield rate | 0.00% | 0.00% |
Bank deposits [Member] | Top of range [Member] | ||
Disclosure of cash and cash equivalents [Line Items] | ||
Yield rate | 0.70% | 0.42% |
Commercial paper [Member] | Bottom of range [Member] | ||
Disclosure of cash and cash equivalents [Line Items] | ||
Yield rate | 0.32% | 0.32% |
Commercial paper [Member] | Top of range [Member] | ||
Disclosure of cash and cash equivalents [Line Items] | ||
Yield rate | 0.40% | 0.42% |
Negotiable certificate of deposit [Member] | Bottom of range [Member] | ||
Disclosure of cash and cash equivalents [Line Items] | ||
Yield rate | 0.40% | 0.35% |
Negotiable certificate of deposit [Member] | Top of range [Member] | ||
Disclosure of cash and cash equivalents [Line Items] | ||
Yield rate | 0.50% | 0.50% |
Time deposits [Member] | Bottom of range [Member] | ||
Disclosure of cash and cash equivalents [Line Items] | ||
Yield rate | 0.52% | 0.40% |
Time deposits [Member] | Top of range [Member] | ||
Disclosure of cash and cash equivalents [Line Items] | ||
Yield rate | 4.40% | 3.30% |
Financial Instruments at Fair94
Financial Instruments at Fair Value Through Profit or Loss - Summary of Financial Instruments at Fair Value through Profit or Loss (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure Of Financial Instruments [Abstract] | |||
Financial assets at fair value through profit or loss | $ 0 | $ 0 | $ 0 |
Financial liabilities held for trading, Derivatives (not designated for hedge), Forward exchange contracts | $ 1 | $ 0 | $ 1 |
Financial Instruments at Fair95
Financial Instruments at Fair Value Through Profit or Loss - Outstanding Forward Exchange Contracts Not Designated for Hedge (Detail) - Forward exchange contracts [Member] | 12 Months Ended | |||||
Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2017EUR (€) | Dec. 31, 2016USD ($) | Dec. 31, 2016EUR (€) | |
EUR [Member] | ||||||
Disclosure of detailed information about financial instruments [Line Items] | ||||||
Currency | EUR/NT$ | EUR/NT$ | ||||
Maturity Period | 2018.03-06 | 2,017.03 | ||||
Contract Amount | $ 69,000,000 | $ 167,000,000 | € 2,000,000 | € 5,000,000 | ||
USD [Member] | ||||||
Disclosure of detailed information about financial instruments [Line Items] | ||||||
Currency | US$/NT$ | US$/NT$ | ||||
Maturity Period | 2,018.01 | 2,017.01 | ||||
Contract Amount | $ 125,000,000 | $ 55,000,000 | $ 4,000,000 | $ 2,000,000 |
Available-for-sale Financial As
Available-for-sale Financial Assets Non Current - Summary of Available-for-sale Financial Assets Non Current(Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Disclosure of financial assets [Line Items] | ||
Available-for-sale financial assets, non current | $ 5,751 | $ 4,764 |
Domestic listed stocks [Member] | ||
Disclosure of financial assets [Line Items] | ||
Available-for-sale financial assets, non current | 3,125 | 2,521 |
Domestic non-listed stocks [Member] | ||
Disclosure of financial assets [Line Items] | ||
Available-for-sale financial assets, non current | 2,332 | 1,949 |
Foreign non-listed stocks [Member] | ||
Disclosure of financial assets [Line Items] | ||
Available-for-sale financial assets, non current | $ 294 | $ 294 |
Available-for-sale Financial 97
Available-for-sale Financial Assets Non Current - Additional Information (Detail) $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of financial assets [Line Items] | ||||
Impairment loss on available-for-sale financial assets | $ 0 | $ 0 | $ 577,000,000 | $ 107,000,000 |
Carrying value of non-listed available-for-sale financial assets disposed | 5,000,000 | 9,000,000 | 2,000,000 | |
Gains (losses) from disposal of available-for-sale assets | 3,000,000 | 1,000,000 | (400,000) | |
Taiwania Capital Buffalo Fund Co Ltd [Member] | ||||
Disclosure of financial assets [Line Items] | ||||
Amount invested in investment entity | $ 300,000,000 | |||
Ownership percentage in investment entity | 12.90% | 12.90% | ||
Domestic listed stocks [Member] | ||||
Disclosure of financial assets [Line Items] | ||||
Impairment loss on available-for-sale financial assets | $ 0 | 577,000,000 | 26,000,000 | |
Non-listed stocks [Member] | Ceased operations [Member] | ||||
Disclosure of financial assets [Line Items] | ||||
Impairment loss on available-for-sale financial assets | 77,000,000 | |||
Non-listed stocks [Member] | Profit recession or deficit [Member] | ||||
Disclosure of financial assets [Line Items] | ||||
Impairment loss on available-for-sale financial assets | $ 0 | $ 0 | $ 4,000,000 |
Held-to-maturity Financial As98
Held-to-maturity Financial Assets Current - Summary of Held-to-maturity Financial Assets Current and Related Information (Detail) - TWD ($) | 12 Months Ended | |
Dec. 31, 2017 | Dec. 31, 2016 | |
Disclosure of financial assets [Line Items] | ||
Held-to-maturity financial assets current | $ 0 | $ 2,140,000,000 |
Corporate bonds [Member] | ||
Disclosure of financial assets [Line Items] | ||
Held-to-maturity financial assets current | 1,990,000,000 | |
Par value | $ 1,990,000,000 | |
Average remaining maturity life | — | 0.34 year |
Corporate bonds [Member] | Bottom of range [Member] | ||
Disclosure of financial assets [Line Items] | ||
Nominal interest rate | 1.18% | |
Effective interest rate | 1.20% | |
Corporate bonds [Member] | Top of range [Member] | ||
Disclosure of financial assets [Line Items] | ||
Nominal interest rate | 1.35% | |
Effective interest rate | 1.35% | |
Bank debentures [Member] | ||
Disclosure of financial assets [Line Items] | ||
Held-to-maturity financial assets current | $ 150,000,000 | |
Par value | $ 150,000,000 | |
Nominal interest rate | 1.25% | |
Effective interest rate | 1.25% | |
Average remaining maturity life | — | 0.41 year |
Trade Notes and Accounts Rece99
Trade Notes and Accounts Receivable, Net - Summary of Trade Notes and Accounts Receivable, Net (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of financial assets [Line Items] | |||
Trade notes and accounts receivable | $ 31,941 | $ 1,077 | $ 31,022 |
Gross carrying amount [Member] | |||
Disclosure of financial assets [Line Items] | |||
Trade notes and accounts receivable | 34,058 | 32,795 | |
Allowance for doubtful accounts [Member] | |||
Disclosure of financial assets [Line Items] | |||
Trade notes and accounts receivable | $ (2,117) | $ (1,773) |
Trade Notes and Accounts Rec100
Trade Notes and Accounts Receivable, Net - Additional Information (Detail) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure of financial assets [Line Items] | |
Threshold period when notes and accounts receivable due are unlikely to be collected and therefore the allowance of notes and accounts receivable are recognized | 180 days |
Percentage of allowance of notes and accounts receivable overdue recognized | 100.00% |
Minimum [Member] | |
Disclosure of financial assets [Line Items] | |
Average credit terms | 30 days |
Top of range [Member] | |
Disclosure of financial assets [Line Items] | |
Average credit terms | 90 days |
Trade Notes and Accounts Rec101
Trade Notes and Accounts Receivable, Net - Aging Analysis for Trade Notes and Accounts Receivable (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | $ 31,941 | $ 1,077 | $ 31,022 |
Gross carrying amount [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 34,058 | 32,795 | |
Gross carrying amount [Member] | Non-overdue [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 30,032 | 29,596 | |
Gross carrying amount [Member] | Less than 30 days [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 1,280 | 1,050 | |
Gross carrying amount [Member] | 31-60 days [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 485 | 348 | |
Gross carrying amount [Member] | 61-90 days [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 278 | 286 | |
Gross carrying amount [Member] | 91-120 days [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 253 | 198 | |
Gross carrying amount [Member] | 121-180 days [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 122 | 119 | |
Gross carrying amount [Member] | More than 181 days [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | $ 1,608 | $ 1,198 |
Trade Notes and Accounts Rec102
Trade Notes and Accounts Receivable, Net - Receivables Past Due but Not Impaired (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | $ 31,941 | $ 1,077 | $ 31,022 |
Receivables past due but not impaired [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 449 | 400 | |
Receivables past due but not impaired [Member] | Less than 30 days [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 328 | 256 | |
Receivables past due but not impaired [Member] | 31-60 days [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 36 | 47 | |
Receivables past due but not impaired [Member] | 61-90 days [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 7 | 9 | |
Receivables past due but not impaired [Member] | 91-120 days [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 70 | 74 | |
Receivables past due but not impaired [Member] | 121-180 days [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | 1 | 1 | |
Receivables past due but not impaired [Member] | More than 181 days [Member] | |||
Disclosure of financial assets that are either past due or impaired [Line Items] | |||
Trade notes and accounts receivable | $ 7 | $ 13 |
Trade Notes and Accounts Rec103
Trade Notes and Accounts Receivable, Net - Movements of Allowance for Doubtful Accounts (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Disclosure of financial assets [Line Items] | |||
Add: Provision for doubtful accounts | $ 578 | $ 943 | $ 480 |
Trade notes and accounts receivable [Member] | |||
Disclosure of financial assets [Line Items] | |||
Beginning balance | 1,773 | 1,334 | 1,049 |
Add: Provision for doubtful accounts | 578 | 943 | 480 |
Deduct: Amounts written off | (234) | (504) | (195) |
Ending balance | 2,117 | 1,773 | 1,334 |
Trade notes and accounts receivable [Member] | Individually assessed for impairment [Member] | |||
Disclosure of financial assets [Line Items] | |||
Beginning balance | 805 | 364 | 276 |
Add: Provision for doubtful accounts | 535 | 715 | 88 |
Deduct: Amounts written off | (15) | (274) | 0 |
Ending balance | 1,325 | 805 | 364 |
Trade notes and accounts receivable [Member] | Collectively assessed for impairment [Member] | |||
Disclosure of financial assets [Line Items] | |||
Beginning balance | 968 | 970 | 773 |
Add: Provision for doubtful accounts | 43 | 228 | 392 |
Deduct: Amounts written off | (219) | (230) | (195) |
Ending balance | $ 792 | $ 968 | $ 970 |
Inventories - Summary of Invent
Inventories - Summary of Inventories (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Classes Of Inventories [Abstract] | |||
Merchandise | $ 5,133 | $ 4,136 | |
Project in process | 1,390 | 961 | |
Work in process | 152 | 109 | |
Raw materials | 89 | 143 | |
Inventories subtotal | 6,764 | 5,349 | |
Land held under development | 1,999 | 1,999 | |
Construction in progress | 77 | 75 | |
Inventories | $ 8,840 | $ 298 | $ 7,423 |
Inventories - Additional Inform
Inventories - Additional Information (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Classes Of Inventories [Abstract] | ||||
Operating costs related to inventories | $ 56,342 | $ 54,183 | $ 52,666 | |
Provision for inventory and obsolescence recognized as operating costs | 52 | $ 2 | 192 | $ 198 |
Inventory to be recovered longer than twelve months | $ 2,076 | $ 2,074 |
Prepayments - Summary of Prepay
Prepayments - Summary of Prepayments (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Prepayments [Abstract] | |||
Prepaid rents | $ 2,687 | $ 2,934 | |
Others | 3,074 | 3,285 | |
Prepayments | 5,761 | 6,219 | |
Prepaid rents | 812 | 899 | |
Others | 1,376 | 2,079 | |
Current prepayments | 2,188 | $ 74 | 2,978 |
Prepaid rents | 1,875 | 2,035 | |
Others | 1,698 | 1,206 | |
Noncurrent prepayments | $ 3,573 | $ 121 | $ 3,241 |
Other Current Monetary Assets -
Other Current Monetary Assets - Summary of Other Current Monetary Assets (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure Of Other Current Monetary Assets [Abstract] | |||
Time deposits and negotiable certificates of deposit with maturities of more than three months | $ 4,054 | $ 3,568 | |
Others | 1,254 | 1,253 | |
Other current monetary assets | $ 5,308 | $ 179 | $ 4,821 |
Other Current Monetary Asset108
Other Current Monetary Assets - Annual Yield Rates of Time Deposits and Negotiable Certificates of Deposits with Maturities of more Than Three Months (Detail) | Dec. 31, 2017 | Dec. 31, 2016 |
Bottom of range [Member] | ||
Disclosure of annual yield rates of other current monetary assets [Line Items] | ||
Time deposits and negotiable certificates of deposit with maturities of more than three months | 0.06% | 0.11% |
Top of range [Member] | ||
Disclosure of annual yield rates of other current monetary assets [Line Items] | ||
Time deposits and negotiable certificates of deposit with maturities of more than three months | 4.15% | 1.95% |
Subsidiaries - Less Than Wholly
Subsidiaries - Less Than Wholly Owned Subsidiaries of the Company That Have Material Noncontrolling Interests (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Jan. 01, 2018TWD ($) | Dec. 31, 2017USD ($) | |
Disclosure of subsidiaries [Line Items] | ||||||
Profit Allocated to Noncontrolling Interests | $ 1,172 | $ 40 | $ 1,141 | $ 813 | ||
Accumulated Noncontrolling Interests | $ 8,474 | $ 6,272 | $ 8,470 | $ 286 | ||
Senao International Co., Ltd. (SENAO) [Member] | ||||||
Disclosure of subsidiaries [Line Items] | ||||||
Place of Incorporation | Taiwan | Taiwan | ||||
Principal Place of Business | Taiwan | Taiwan | ||||
Proportion of Ownership Interests Held by Noncontrolling Interests | 71.00% | 71.00% | 71.00% | |||
Proportion of Voting Rights Held by Noncontrolling Interests | 71.00% | 71.00% | 71.00% | |||
Profit Allocated to Noncontrolling Interests | $ 592 | $ 690 | 551 | |||
Accumulated Noncontrolling Interests | $ 4,092 | $ 4,069 | ||||
Chunghwa Precision Test Tech. Co., Ltd. (CHPT) [Member] | ||||||
Disclosure of subsidiaries [Line Items] | ||||||
Place of Incorporation | Taiwan | Taiwan | ||||
Principal Place of Business | Taiwan | Taiwan | ||||
Proportion of Ownership Interests Held by Noncontrolling Interests | 62.00% | 62.00% | 59.00% | |||
Proportion of Voting Rights Held by Noncontrolling Interests | 62.00% | 62.00% | 59.00% | |||
Profit Allocated to Noncontrolling Interests | $ 431 | $ 341 | $ 212 | |||
Accumulated Noncontrolling Interests | 3,513 | 1,575 | ||||
Individually immaterial subsidiaries with noncontrolling interests [Member] | ||||||
Disclosure of subsidiaries [Line Items] | ||||||
Accumulated Noncontrolling Interests | $ 869 | $ 628 |
Subsidiaries - Summarized Finan
Subsidiaries - Summarized Financial Information Before Intercompany Eliminations (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Jan. 01, 2018TWD ($) | Dec. 31, 2017USD ($) | |
Disclosure of subsidiaries [Line Items] | ||||||
Current assets | $ 79,334 | $ 81,620 | $ 2,677 | |||
Noncurrent assets | 371,568 | 365,295 | 12,536 | |||
Current liabilities | 63,939 | 64,160 | 2,157 | |||
Noncurrent liabilities | 17,553 | 15,827 | 593 | |||
Equity attributable to the parent | 360,936 | 360,656 | 12,177 | |||
NONCONTROLLING INTERESTS | 8,474 | 6,272 | $ 8,470 | $ 286 | ||
NET INCOME | 40,160 | $ 1,355 | 41,626 | $ 42,852 | ||
Profit attributable to the parent | 38,988 | 1,315 | 40,485 | 42,039 | ||
Profit Allocated to Noncontrolling Interests | 1,172 | 40 | 1,141 | 813 | ||
Other comprehensive loss for the year | (1,306) | (44) | (2,056) | (833) | ||
Total comprehensive income attributable to the parent | 37,705 | 1,272 | 38,486 | 41,207 | ||
Total comprehensive income attributable to noncontrolling interests | 1,149 | 39 | 1,084 | 812 | ||
TOTAL COMPREHENSIVE INCOME | 38,854 | 1,311 | 39,570 | 42,019 | ||
Net cash flow from operating activities | 70,932 | 2,393 | 64,952 | 76,325 | ||
Net cash flow from investing activities | (36,721) | (1,239) | (21,663) | (30,453) | ||
Net cash flow from financing activities | (36,608) | (1,234) | (42,518) | (39,186) | ||
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS | 122 | 4 | 58 | 25 | ||
Net cash inflow (outflow) | (2,275) | (76) | 829 | 6,711 | ||
Stockholders of the parent | 38,988 | 1,315 | 40,485 | 42,039 | ||
Noncontrolling interests | 1,172 | 40 | 1,141 | 813 | ||
Stockholders of the parent | 37,705 | $ 1,272 | 38,486 | 41,207 | ||
Senao International Co., Ltd. (SENAO) [Member] | ||||||
Disclosure of subsidiaries [Line Items] | ||||||
Current assets | 7,584 | 7,762 | ||||
Noncurrent assets | 2,531 | 2,535 | ||||
Current liabilities | 4,278 | 4,466 | ||||
Noncurrent liabilities | 160 | 155 | ||||
Equity attributable to the parent | 1,585 | 1,607 | ||||
NONCONTROLLING INTERESTS | 4,092 | 4,069 | ||||
Revenue and income | 36,038 | 34,453 | 35,944 | |||
Costs and expenses | 35,200 | 33,476 | 35,171 | |||
NET INCOME | 838 | 977 | 773 | |||
Profit attributable to the parent | 246 | 287 | 222 | |||
Profit Allocated to Noncontrolling Interests | 592 | 690 | 551 | |||
Other comprehensive income (loss) attributable to the parent | 3 | (21) | (1) | |||
Other comprehensive loss attributable to noncontrolling interests | (17) | (53) | (2) | |||
Other comprehensive loss for the year | (14) | (74) | (3) | |||
Total comprehensive income attributable to the parent | 249 | 266 | 222 | |||
Total comprehensive income attributable to noncontrolling interests | 575 | 637 | 548 | |||
TOTAL COMPREHENSIVE INCOME | 824 | 903 | 770 | |||
Dividends paid to noncontrolling interests | 703 | 526 | 274 | |||
Net cash flow from operating activities | 1,081 | 531 | 1,739 | |||
Net cash flow from investing activities | (57) | 130 | 54 | |||
Net cash flow from financing activities | (897) | (677) | (1,530) | |||
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS | (2) | (7) | 11 | |||
Net cash inflow (outflow) | 125 | (23) | 274 | |||
Stockholders of the parent | 246 | 287 | 222 | |||
Noncontrolling interests | 592 | 690 | 551 | |||
Stockholders of the parent | 249 | 266 | 222 | |||
Chunghwa Precision Test Tech. Co., Ltd. (CHPT) [Member] | ||||||
Disclosure of subsidiaries [Line Items] | ||||||
Current assets | 4,496 | 2,116 | ||||
Noncurrent assets | 2,167 | 1,872 | ||||
Current liabilities | 965 | 1,323 | ||||
Noncurrent liabilities | 1 | 1 | ||||
Equity attributable to the parent | 2,184 | 1,089 | ||||
NONCONTROLLING INTERESTS | 3,513 | 1,575 | ||||
Revenue and income | 3,127 | 2,607 | 1,735 | |||
Costs and expenses | 2,402 | 2,020 | 1,341 | |||
NET INCOME | 725 | 587 | 394 | |||
Profit attributable to the parent | 294 | 246 | 182 | |||
Profit Allocated to Noncontrolling Interests | 431 | 341 | 212 | |||
Other comprehensive income (loss) attributable to the parent | (1) | 0 | 0 | |||
Other comprehensive loss attributable to noncontrolling interests | (2) | 0 | 0 | |||
Other comprehensive loss for the year | (3) | 0 | 0 | |||
Total comprehensive income attributable to the parent | 293 | 246 | 182 | |||
Total comprehensive income attributable to noncontrolling interests | 429 | 341 | 212 | |||
TOTAL COMPREHENSIVE INCOME | 722 | 587 | 394 | |||
Dividends paid to noncontrolling interests | 146 | 109 | 35 | |||
Net cash flow from operating activities | 1,052 | 671 | 532 | |||
Net cash flow from investing activities | (639) | (904) | (200) | |||
Net cash flow from financing activities | 2,306 | 841 | (112) | |||
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS | (4) | (2) | 3 | |||
Net cash inflow (outflow) | 2,715 | 606 | 223 | |||
Stockholders of the parent | 294 | 246 | 182 | |||
Noncontrolling interests | 431 | 341 | 212 | |||
Stockholders of the parent | $ 293 | $ 246 | $ 182 |
Subsidiaries - Additional Infor
Subsidiaries - Additional Information (Detail) - TWD ($) $ in Millions | 12 Months Ended | |||||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Mar. 31, 2018 | Jan. 01, 2015 | Dec. 31, 2014 | |
Disclosure of subsidiaries [Line Items] | ||||||
Pro-forma revenue | $ 232,187 | |||||
Pro-forma net income | $ 42,774 | |||||
CHIEF Telecom Inc. (CHIEF) [Member] | ||||||
Disclosure of subsidiaries [Line Items] | ||||||
Equity ownership percentage | 67.00% | 69.00% | ||||
Chunghwa Investment Co., Ltd. (CHI) [Member] | Chunghwa Precision Test Tech. Co., Ltd. (CHPT) [Member] | ||||||
Disclosure of subsidiaries [Line Items] | ||||||
Equity ownership percentage | 38.30% | 38.30% | ||||
Senao International Co., Ltd. (SENAO) [Member] | ||||||
Disclosure of subsidiaries [Line Items] | ||||||
Equity ownership percentage | 29.31% | 28.18% | ||||
Senao International Co., Ltd. (SENAO) [Member] | Youth Co., Ltd. (Youth) [Member] | ||||||
Disclosure of subsidiaries [Line Items] | ||||||
Equity ownership percentage | 89.48% | 70.00% | ||||
Discount rate applied to cash flow projections | 14.80% | 14.60% | 16.30% | |||
Impairment loss | $ 9 | $ 0 | $ 0 | |||
Chunghwa Telecom Co., Ltd. [Member] | Senao International Co., Ltd. (SENAO) [Member] | ||||||
Disclosure of subsidiaries [Line Items] | ||||||
Equity ownership percentage | 28.93% | 29.00% | ||||
Chunghwa Telecom Co., Ltd. [Member] | CHIEF Telecom Inc. (CHIEF) [Member] | ||||||
Disclosure of subsidiaries [Line Items] | ||||||
Equity ownership percentage | 70.43% | 69.31% |
Subsidiaries - Detailed Informa
Subsidiaries - Detailed Information of Equity Transactions (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Chunghwa Investment Co Ltd Disposed Some Shares Of Chunghwa Precision Test Tech Co Ltd [Member] | |||
Disclosure of classes of share capital [Line Items] | |||
Cash consideration received from (paid to)Noncontrolling interests | $ 83 | $ 45 | |
The proportionate share of the carrying amount of the net assets of the subsidiary transferred (to) from noncontrolling interests | (25) | (18) | |
Differences arising from equity transactions | 58 | 27 | |
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 | 27 | |
Senao International Co Ltd Purchased Its Treasury Stock [Member] | |||
Disclosure of classes of share capital [Line Items] | |||
Cash consideration received from (paid to)Noncontrolling interests | (492) | ||
The proportionate share of the carrying amount of the net assets of the subsidiary transferred (to) from noncontrolling interests | 416 | ||
Differences arising from equity transactions | (76) | ||
Additional paid-in capital - arising from changes in equities of subsidiaries | (15) | ||
Unappropriated earnings | (61) | ||
Senao International Co Ltd Participated In Youths Share Subscription [Member] | |||
Disclosure of classes of share capital [Line Items] | |||
The proportionate share of the carrying amount of the net assets of the subsidiary transferred (to) from noncontrolling interests | (0.4) | ||
Differences arising from equity transactions | (0.4) | ||
Additional paid-in capital - arising from changes in equities of subsidiaries | $ (0.4) | ||
Chunghwa Investment Co Ltd Did Not Participate In The Capital Increase Of Chunghwa Precision Test Tech Co Ltd [Member] | |||
Disclosure of classes of share capital [Line Items] | |||
Cash consideration received from (paid to)Noncontrolling interests | $ 2,552 | 1,175 | |
The proportionate share of the carrying amount of the net assets of the subsidiary transferred (to) from noncontrolling interests | (1,750) | (786) | |
Differences arising from equity transactions | 802 | 389 | |
Additional paid-in capital - arising from changes in equities of subsidiaries | 802 | $ 389 | |
Senao International Co Ltd Transferred Its Treasury Stock [Member] | |||
Disclosure of classes of share capital [Line Items] | |||
Cash consideration received from (paid to)Noncontrolling interests | 164 | ||
The proportionate share of the carrying amount of the net assets of the subsidiary transferred (to) from noncontrolling interests | (137) | ||
Differences arising from equity transactions | 27 | ||
Additional paid-in capital - arising from changes in equities of subsidiaries | 27 | ||
Chunghwa Telecom Co Ltd and Chunghwa Investment Co Ltd Disposed Some Shares of CHIEF Telecom Inc [Member] | |||
Disclosure of classes of share capital [Line Items] | |||
Cash consideration received from (paid to)Noncontrolling interests | 106 | ||
The proportionate share of the carrying amount of the net assets of the subsidiary transferred (to) from noncontrolling interests | (29) | ||
Differences arising from equity transactions | 77 | ||
Additional paid-in capital - difference between consideration received or paid and the carrying amount of the subsidiaries’ net assets upon actual disposal or acquisition | $ 77 |
Subsidiaries - Business Combina
Subsidiaries - Business Combinations (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||||||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Jan. 01, 2018TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016USD ($) | Dec. 31, 2014TWD ($) | |
CURRENT ASSETS | ||||||||
Cash and cash equivalents | $ 28,825 | $ 31,100 | $ 30,271 | $ 973 | $ 1,049 | $ 23,560 | ||
Inventories | 8,840 | 7,423 | 298 | |||||
Prepayments | 2,188 | 2,978 | 74 | |||||
Other current assets | 2,183 | 2,122 | 74 | |||||
NONCURRENT ASSETS | ||||||||
Property, plant and equipment | 288,708 | 291,170 | 9,740 | |||||
Refundable deposits | 1,860 | 2,083 | ||||||
Deferred income tax assets | 2,730 | 2,322 | 92 | |||||
Other noncurrent assets | 5,536 | 5,025 | 187 | |||||
CURRENT LIABILITIES | ||||||||
Short-term loans | (70) | (138) | (2) | |||||
Trade notes payable | (19,396) | (18,810) | (654) | |||||
Accounts and other payables | (25,001) | (26,418) | (844) | |||||
Other current liabilities | (1,081) | (1,330) | (37) | |||||
NONCURRENT LIABILITIES | ||||||||
Long-term loans | (1,600) | (1,600) | (54) | |||||
Deferred income tax liabilities | (1,430) | (1,464) | (48) | |||||
Other noncurrent liabilities | (3,458) | (3,004) | (117) | |||||
Add: Noncontrolling interest (30% of the recognized amounts of Youth and its subsidiaries’ identifiable net assets) | 8,474 | 6,272 | $ 8,470 | 286 | ||||
Less: Cash and cash equivalents acquired | (28,825) | (31,100) | (30,271) | $ (973) | $ (1,049) | $ (23,560) | ||
Net cash outflow on acquisition of subsidiaries | $ 0 | $ 0 | $ 0 | $ 114 | ||||
Youth Co., Ltd. (Youth) [Member] | ||||||||
Disclosure of detailed information about business combination [Line Items] | ||||||||
Principal Activity | Sale and maintenance of information and communication technologies products | |||||||
Date of Acquisition | Sep. 2, 2015 | |||||||
Proportion of Voting Equity Interests Acquired | 70.00% | |||||||
Consideration Transferred | $ 135 | |||||||
CURRENT ASSETS | ||||||||
Cash and cash equivalents | 21 | |||||||
Accounts and other receivables | 10 | |||||||
Inventories | 30 | |||||||
Prepayments | 6 | |||||||
Other current assets | 6 | |||||||
NONCURRENT ASSETS | ||||||||
Property, plant and equipment | 36 | |||||||
Intangible assets | 259 | |||||||
Refundable deposits | 22 | |||||||
Deferred income tax assets | 4 | |||||||
Other noncurrent assets | 32 | |||||||
CURRENT LIABILITIES | ||||||||
Short-term loans | (54) | |||||||
Trade notes payable | (9) | |||||||
Accounts and other payables | (75) | |||||||
Other current liabilities | (80) | |||||||
NONCURRENT LIABILITIES | ||||||||
Long-term loans | (40) | |||||||
Deferred income tax liabilities | (44) | |||||||
Other noncurrent liabilities | (10) | |||||||
Assets acquired and liabilities assumed | 114 | |||||||
Add: Noncontrolling interest (30% of the recognized amounts of Youth and its subsidiaries’ identifiable net assets) | 34 | |||||||
Less: Fair value of identifiable net assets acquired | (114) | |||||||
Goodwill arising on acquisition | 55 | |||||||
Less: Cash and cash equivalents acquired | (21) | |||||||
Net cash outflow on acquisition of subsidiaries | 114 | |||||||
Revenue | 188 | |||||||
Net loss | $ 18 |
Subsidiaries - Business Comb114
Subsidiaries - Business Combinations (Parenthetical) (Detail) | 12 Months Ended |
Dec. 31, 2015 | |
Youth Co., Ltd. (Youth) [Member] | |
Disclosure of detailed information about business combination [Line Items] | |
Percentage held by noncontrolling interest | 30.00% |
Investments Accounted for Us115
Investments Accounted for Using Equity Method - Summary of Investments Accounted for Using Equity Method (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure Of Significant Investments In Associates And Joint Ventures [Abstract] | |||
Investments in associates | $ 2,326 | $ 2,383 | |
Investments in joint ventures | 0 | 3 | |
Investments accounted for using equity method | $ 2,326 | $ 78 | $ 2,386 |
Investments Accounted For Us116
Investments Accounted For Using Equity Method - Additional Information (Detail) $ in Millions, $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 | Apr. 30, 2015TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) |
Disclosure Of Significant Investments In Associates And Joint Ventures [Line Items] | |||||||
Impairment loss on investments accounted for using equity method | $ 0 | $ 0 | $ 0 | $ 8 | |||
Huada Digital Corporation ("HDD") [Member] | |||||||
Disclosure Of Significant Investments In Associates And Joint Ventures [Line Items] | |||||||
Disposal loss of investments | 0.4 | ||||||
Chunghwa Benefit One Co., Ltd. ("CBO") [Member] | |||||||
Disclosure Of Significant Investments In Associates And Joint Ventures [Line Items] | |||||||
Disposal loss of investments | $ 0.2 | ||||||
KingwayTek Technology Co., Ltd. ("KWT") [Member] | |||||||
Disclosure Of Significant Investments In Associates And Joint Ventures [Line Items] | |||||||
Gain on disposal of investments | 7 | ||||||
Dian Zuan Integrating Marketing Co., Ltd. ("DZIM") [Member] | |||||||
Disclosure Of Significant Investments In Associates And Joint Ventures [Line Items] | |||||||
Ownership interest in associates | 22.00% | 26.00% | |||||
Click Force Co., Ltd. ("CF") [Member] | |||||||
Disclosure Of Significant Investments In Associates And Joint Ventures [Line Items] | |||||||
Investments in cash in associates | $ 6 | ||||||
Ownership interest in associates | 49.00% | 49.00% | |||||
Alliance Digital Tech Co., Ltd. ("ADT") [Member] | |||||||
Disclosure Of Significant Investments In Associates And Joint Ventures [Line Items] | |||||||
Investments in cash in associates | $ 30 | ||||||
Ownership interest in associates | 14.00% | ||||||
Xiamen Sertec Business Technology Co., Ltd. [Member] | |||||||
Disclosure Of Significant Investments In Associates And Joint Ventures [Line Items] | |||||||
Gain on disposal of investments | 1 | ||||||
MeWorks LIMITED (HK) ("MeWorks") [Member] | |||||||
Disclosure Of Significant Investments In Associates And Joint Ventures [Line Items] | |||||||
Impairment loss on investments accounted for using equity method | $ 8 |
Investments Accounted for Us117
Investments Accounted for Using Equity Method - Investments in Associates (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 2,326 | $ 2,383 | ||
The Company’s share of profit | 419 | $ 14 | 515 | $ 897 |
Senao Networks, Inc. ("SNI") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 704 | $ 680 | ||
Percentage of ownership in associates | 34.00% | 34.00% | ||
Percentage of voting rights in associates | 34.00% | 34.00% | ||
Fair values based on the closing market prices of SNI | $ 2,130 | $ 2,537 | ||
ST-2 Satellite Ventures Pte., Ltd. ("STS") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 472 | $ 467 | ||
Percentage of ownership in associates | 38.00% | 38.00% | ||
Percentage of voting rights in associates | 38.00% | 38.00% | ||
International Integrated System, Inc. ("IISI") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 292 | $ 307 | ||
Percentage of ownership in associates | 32.00% | 32.00% | ||
Percentage of voting rights in associates | 32.00% | 32.00% | ||
Viettel-CHT Co., Ltd. ("Viettel-CHT") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 256 | $ 275 | ||
Percentage of ownership in associates | 30.00% | 30.00% | ||
Percentage of voting rights in associates | 30.00% | 30.00% | ||
Taiwan International Standard Electronics Co., Ltd. ("TISE") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 132 | $ 142 | ||
Percentage of ownership in associates | 40.00% | 40.00% | ||
Percentage of voting rights in associates | 40.00% | 40.00% | ||
Skysoft Co., Ltd. ("SKYSOFT") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 140 | $ 145 | ||
Percentage of ownership in associates | 30.00% | 30.00% | ||
Percentage of voting rights in associates | 30.00% | 30.00% | ||
KingwayTek Technology Co., Ltd. ("KWT") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 90 | $ 84 | ||
Percentage of ownership in associates | 26.00% | 26.00% | ||
Percentage of voting rights in associates | 26.00% | 26.00% | ||
So-net Entertainment Taiwan Limited ("So-net") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 104 | $ 111 | ||
Percentage of ownership in associates | 30.00% | 30.00% | ||
Percentage of voting rights in associates | 30.00% | 30.00% | ||
Taiwan International Ports Logistics Corporation ("TIPL") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 50 | $ 57 | ||
Percentage of ownership in associates | 27.00% | 27.00% | ||
Percentage of voting rights in associates | 27.00% | 27.00% | ||
Click Force Co., Ltd. ("CF") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 38 | $ 37 | ||
Percentage of ownership in associates | 49.00% | 49.00% | ||
Percentage of voting rights in associates | 49.00% | 49.00% | ||
Alliance Digital Tech Co., Ltd. ("ADT") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 13 | $ 32 | ||
Percentage of ownership in associates | 14.00% | 14.00% | ||
Percentage of voting rights in associates | 14.00% | 14.00% | ||
Dian Zuan Integrating Marketing Co., Ltd. ("DZIM") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 12 | $ 22 | ||
Percentage of ownership in associates | 22.00% | 26.00% | ||
Percentage of voting rights in associates | 22.00% | 26.00% | ||
HopeTech Technologies Limited ("HopeTech") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 23 | $ 24 | ||
Percentage of ownership in associates | 45.00% | 45.00% | ||
Percentage of voting rights in associates | 45.00% | 45.00% | ||
MeWorks LIMITED (HK) ("MeWorks") [Member] | ||||
Disclosure of associates [Line Items] | ||||
Investments in associates | $ 0 | $ 0 | ||
Percentage of ownership in associates | 20.00% | 20.00% | ||
Percentage of voting rights in associates | 20.00% | 20.00% | ||
Associates [Member] | ||||
Disclosure of associates [Line Items] | ||||
The Company’s share of profit | $ 420 | $ 557 | 926 | |
The Company’s share of other comprehensive (loss) income | (4) | (47) | (19) | |
The Company’s share of total comprehensive income | $ 416 | $ 510 | $ 907 |
Investments Accounted for Us118
Investments Accounted for Using Equity Method - Investments in Joint Ventures (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of joint ventures [Line Items] | ||||
Investments in joint ventures | $ 0 | $ 3 | ||
Percentage of ownership in joint ventures | 0.00% | 0.00% | 0.00% | |
Percentage of voting rights in joint ventures | 0.00% | 0.00% | 0.00% | |
The Company’s share of loss | $ 419 | $ 14 | $ 515 | $ 897 |
Huada Digital Corporation ("HDD") [Member] | ||||
Disclosure of joint ventures [Line Items] | ||||
Investments in joint ventures | $ 0 | $ 0 | ||
Percentage of ownership in joint ventures | 0.00% | 0.00% | 50.00% | |
Percentage of voting rights in joint ventures | 0.00% | 0.00% | 50.00% | |
Chunghwa Benefit One Co., Ltd. ("CBO") [Member] | ||||
Disclosure of joint ventures [Line Items] | ||||
Investments in joint ventures | $ 0 | $ 3 | ||
Percentage of ownership in joint ventures | 0.00% | 0.00% | 50.00% | |
Percentage of voting rights in joint ventures | 0.00% | 0.00% | 50.00% | |
Joint ventures [Member] | ||||
Disclosure of joint ventures [Line Items] | ||||
The Company’s share of loss | $ (1) | $ (42) | (29) | |
The Company’s share of other comprehensive (loss) income | 0 | 0 | 0 | |
The Company’s share of total comprehensive loss | $ (1) | $ (42) | $ (29) |
Property, Plant and Equipment -
Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | $ 291,170 | |||
Depreciation expenses | (28,143) | $ (29,087) | $ (30,350) | |
Additions | 26,069 | 24,591 | 24,451 | |
Impairment losses | 0 | $ 0 | 596 | 138 |
Ending balance | 288,708 | $ 9,740 | 291,170 | |
Gross carrying amount [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | 936,128 | 925,434 | 915,723 | |
Additions | 26,069 | 24,591 | 24,451 | |
Disposal | (15,448) | (13,810) | (14,711) | |
Effect of foreign exchange differences | (176) | (42) | 69 | |
Acquisitions through business combinations | 65 | |||
Others | (113) | (45) | (163) | |
Ending balance | 946,460 | 936,128 | 925,434 | |
Accumulated depreciation, amortization and impairment [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | (644,958) | (629,035) | (613,073) | |
Depreciation expenses | (28,143) | (29,087) | (30,350) | |
Disposal | 15,182 | 13,718 | 14,598 | |
Impairment losses | (596) | (138) | ||
Effect of foreign exchange differences | 47 | 12 | (14) | |
Acquisitions through business combinations | (29) | |||
Others | 120 | 30 | (29) | |
Ending balance | (657,752) | (644,958) | (629,035) | |
Land [Member] | Gross carrying amount [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | 103,872 | 102,747 | 102,774 | |
Additions | 0 | 791 | 0 | |
Disposal | (158) | (2) | 0 | |
Effect of foreign exchange differences | 0 | 0 | 0 | |
Acquisitions through business combinations | 19 | |||
Others | 365 | 336 | (46) | |
Ending balance | 104,079 | 103,872 | 102,747 | |
Land [Member] | Accumulated depreciation, amortization and impairment [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | 0 | 0 | 0 | |
Depreciation expenses | 0 | 0 | 0 | |
Disposal | 0 | 0 | 0 | |
Impairment losses | 0 | 0 | ||
Effect of foreign exchange differences | 0 | 0 | 0 | |
Acquisitions through business combinations | 0 | |||
Others | 0 | 0 | 0 | |
Ending balance | 0 | 0 | 0 | |
Land improvements [Member] | Gross carrying amount [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | 1,581 | 1,575 | 1,558 | |
Additions | 0 | 0 | 0 | |
Disposal | (5) | (6) | 0 | |
Effect of foreign exchange differences | 0 | 0 | 0 | |
Acquisitions through business combinations | 0 | |||
Others | 19 | 12 | 17 | |
Ending balance | 1,595 | 1,581 | 1,575 | |
Land improvements [Member] | Accumulated depreciation, amortization and impairment [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | (1,248) | (1,203) | (1,145) | |
Depreciation expenses | (50) | (51) | (53) | |
Disposal | 4 | 6 | 0 | |
Impairment losses | 0 | 0 | ||
Effect of foreign exchange differences | 0 | 0 | 0 | |
Acquisitions through business combinations | 0 | |||
Others | 1 | 0 | (5) | |
Ending balance | (1,293) | (1,248) | (1,203) | |
Buildings [Member] | Gross carrying amount [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | 67,738 | 67,790 | 67,600 | |
Additions | 30 | 36 | 59 | |
Disposal | (108) | (35) | (11) | |
Effect of foreign exchange differences | 0 | 0 | 0 | |
Acquisitions through business combinations | 7 | |||
Others | 5,034 | (53) | 135 | |
Ending balance | 72,694 | 67,738 | 67,790 | |
Buildings [Member] | Accumulated depreciation, amortization and impairment [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | (25,591) | (24,421) | (23,202) | |
Depreciation expenses | (1,402) | (1,269) | (1,269) | |
Disposal | 47 | 34 | 10 | |
Impairment losses | 0 | 0 | ||
Effect of foreign exchange differences | 0 | 0 | 0 | |
Acquisitions through business combinations | (1) | |||
Others | 147 | 65 | 41 | |
Ending balance | (26,799) | (25,591) | (24,421) | |
Computer equipment [Member] | Gross carrying amount [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | 14,295 | 14,996 | 15,318 | |
Additions | 78 | 42 | 37 | |
Disposal | (974) | (1,546) | (1,073) | |
Effect of foreign exchange differences | (1) | (3) | 0 | |
Acquisitions through business combinations | 0 | |||
Others | 764 | 806 | 714 | |
Ending balance | 14,162 | 14,295 | 14,996 | |
Computer equipment [Member] | Accumulated depreciation, amortization and impairment [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | (11,582) | (11,715) | (11,308) | |
Depreciation expenses | (1,192) | (1,332) | (1,467) | |
Disposal | 967 | 1,529 | 1,061 | |
Impairment losses | 0 | 0 | ||
Effect of foreign exchange differences | 0 | 1 | 0 | |
Acquisitions through business combinations | 0 | |||
Others | 19 | (65) | (1) | |
Ending balance | (11,788) | (11,582) | (11,715) | |
Telecommunications equipment [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Impairment losses | 596 | 138 | ||
Telecommunications equipment [Member] | Gross carrying amount [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | 715,692 | 705,372 | 695,076 | |
Additions | 193 | 171 | 159 | |
Disposal | (13,739) | (11,542) | (13,047) | |
Effect of foreign exchange differences | (172) | (35) | 69 | |
Acquisitions through business combinations | 0 | |||
Others | 20,080 | 21,726 | 23,115 | |
Ending balance | 722,054 | 715,692 | 705,372 | |
Telecommunications equipment [Member] | Accumulated depreciation, amortization and impairment [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | (596,497) | (582,205) | (568,767) | |
Depreciation expenses | (24,492) | (25,280) | (26,291) | |
Disposal | 13,712 | 11,512 | 13,033 | |
Impairment losses | (596) | (138) | ||
Effect of foreign exchange differences | 45 | 7 | (14) | |
Acquisitions through business combinations | 0 | |||
Others | 78 | 65 | (28) | |
Ending balance | (607,154) | (596,497) | (582,205) | |
Transportation equipment [Member] | Gross carrying amount [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | 3,866 | 3,815 | 3,824 | |
Additions | 1 | 1 | 0 | |
Disposal | (62) | (54) | (69) | |
Effect of foreign exchange differences | 0 | 0 | 0 | |
Acquisitions through business combinations | 0 | |||
Others | 29 | 104 | 60 | |
Ending balance | 3,834 | 3,866 | 3,815 | |
Transportation equipment [Member] | Accumulated depreciation, amortization and impairment [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | (3,237) | (2,750) | (2,208) | |
Depreciation expenses | (330) | (529) | (599) | |
Disposal | 63 | 54 | 69 | |
Impairment losses | 0 | 0 | ||
Effect of foreign exchange differences | 0 | 0 | 0 | |
Acquisitions through business combinations | 0 | |||
Others | (9) | (12) | (12) | |
Ending balance | (3,513) | (3,237) | (2,750) | |
Miscellaneous equipment [Member] | Gross carrying amount [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | 8,943 | 8,737 | 8,643 | |
Additions | 193 | 255 | 203 | |
Disposal | (402) | (625) | (511) | |
Effect of foreign exchange differences | (3) | (4) | 0 | |
Acquisitions through business combinations | 39 | |||
Others | 784 | 580 | 363 | |
Ending balance | 9,515 | 8,943 | 8,737 | |
Miscellaneous equipment [Member] | Accumulated depreciation, amortization and impairment [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | (6,803) | (6,741) | (6,443) | |
Depreciation expenses | (677) | (626) | (671) | |
Disposal | 389 | 583 | 425 | |
Impairment losses | 0 | 0 | ||
Effect of foreign exchange differences | 2 | 4 | 0 | |
Acquisitions through business combinations | (28) | |||
Others | (116) | (23) | (24) | |
Ending balance | (7,205) | (6,803) | (6,741) | |
Construction in progress and equipment to be accepted [Member] | Gross carrying amount [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | 20,141 | 20,402 | 20,930 | |
Additions | 25,574 | 23,295 | 23,993 | |
Disposal | 0 | 0 | 0 | |
Effect of foreign exchange differences | 0 | 0 | 0 | |
Acquisitions through business combinations | 0 | |||
Others | (27,188) | (23,556) | (24,521) | |
Ending balance | 18,527 | 20,141 | 20,402 | |
Construction in progress and equipment to be accepted [Member] | Accumulated depreciation, amortization and impairment [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Beginning balance | 0 | 0 | 0 | |
Depreciation expenses | 0 | 0 | 0 | |
Disposal | 0 | 0 | 0 | |
Impairment losses | 0 | 0 | ||
Effect of foreign exchange differences | 0 | 0 | 0 | |
Acquisitions through business combinations | 0 | |||
Others | 0 | 0 | 0 | |
Ending balance | $ 0 | $ 0 | $ 0 |
Property, Plant and Equipmen120
Property, Plant and Equipment - Additional Information (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Impairment losses | $ 0 | $ 0 | $ 596 | $ 138 |
Telecommunications equipment [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Impairment losses | 596 | $ 138 | ||
Partial computer and miscellaneous equipment [Member] | ||||
Disclosure of detailed information about property, plant and equipment [Line Items] | ||||
Impairment losses | $ 0.4 |
Property, Plant and Equipmen121
Property, Plant and Equipment - Estimated Service Lives of Property, Plant and Equipment (Detail) | 12 Months Ended |
Dec. 31, 2017 | |
Land improvements [Member] | Minimum [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P8Y |
Land improvements [Member] | Top of range [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P30Y |
Main buildings [Member] | Minimum [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P35Y |
Main buildings [Member] | Top of range [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P60Y |
Other building facilities [Member] | Minimum [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P3Y |
Other building facilities [Member] | Top of range [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P20Y |
Computer equipment [Member] | Minimum [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P2Y |
Computer equipment [Member] | Top of range [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P8Y |
Telecommunication circuits [Member] | Minimum [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P2Y |
Telecommunication circuits [Member] | Top of range [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P30Y |
Telecommunication machinery and antennas equipment [Member] | Minimum [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P2Y |
Telecommunication machinery and antennas equipment [Member] | Top of range [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P30Y |
Transportation equipment [Member] | Minimum [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P3Y |
Transportation equipment [Member] | Top of range [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P10Y |
Leasehold improvements [Member] | Minimum [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P1Y |
Leasehold improvements [Member] | Top of range [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P6Y |
Mechanical and air conditioner equipment [Member] | Minimum [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P3Y |
Mechanical and air conditioner equipment [Member] | Top of range [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P16Y |
Others [Member] | Minimum [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P1Y |
Others [Member] | Top of range [Member] | |
Disclosure of detailed information about property, plant and equipment [Line Items] | |
Estimated service lives | P10Y |
Investment Properties - Summary
Investment Properties - Summary of Investment Properties (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of detailed information about investment property [Line Items] | ||||
Beginning balance | $ 8,115 | |||
Depreciation expense | (21) | $ (19) | $ (18) | |
Reversal of impairment loss | 11 | $ 0 | 148 | 142 |
Ending balance | 8,048 | $ 272 | 8,115 | |
Gross carrying amount [Member] | ||||
Disclosure of detailed information about investment property [Line Items] | ||||
Beginning balance | 9,195 | 9,058 | 8,883 | |
Disposal | 0 | |||
Reclassification | (60) | 137 | 175 | |
Ending balance | 9,135 | 9,195 | 9,058 | |
Accumulated depreciation, amortization and impairment [Member] | ||||
Disclosure of detailed information about investment property [Line Items] | ||||
Beginning balance | (1,080) | (1,156) | (1,262) | |
Depreciation expense | (21) | (19) | (18) | |
Disposal | 0 | |||
Reclassification | 3 | (53) | (18) | |
Reversal of impairment loss | 11 | 148 | 142 | |
Ending balance | $ (1,087) | $ (1,080) | $ (1,156) |
Investment Properties - Estimat
Investment Properties - Estimated Service Lives of Investment Properties (Detail) | 12 Months Ended |
Dec. 31, 2017 | |
Land improvements [Member] | Bottom of range [Member] | |
Disclosure of detailed information about investment property [Line Items] | |
Estimated service lives | P8Y |
Land improvements [Member] | Top of range [Member] | |
Disclosure of detailed information about investment property [Line Items] | |
Estimated service lives | P30Y |
Main buildings [Member] | Bottom of range [Member] | |
Disclosure of detailed information about investment property [Line Items] | |
Estimated service lives | P35Y |
Main buildings [Member] | Top of range [Member] | |
Disclosure of detailed information about investment property [Line Items] | |
Estimated service lives | P60Y |
Other building facilities [Member] | Bottom of range [Member] | |
Disclosure of detailed information about investment property [Line Items] | |
Estimated service lives | P4Y |
Other building facilities [Member] | Top of range [Member] | |
Disclosure of detailed information about investment property [Line Items] | |
Estimated service lives | P10Y |
Investment Properties - Additio
Investment Properties - Additional Information (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure Of Investment Property [Abstract] | ||||
Reversal of impairment loss | $ 11 | $ 0 | $ 148 | $ 142 |
Investment Properties - Key Ass
Investment Properties - Key Assumptions and Fair Values of Investment Properties (Detail) $ in Millions, $ in Millions | 12 Months Ended | ||
Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2017USD ($) | |
Disclosure of detailed information about investment property [Line Items] | |||
Investment properties | $ 8,048 | $ 8,115 | $ 272 |
Discount rate | 1.04% | 1.04% | |
Bottom of range [Member] | |||
Disclosure of detailed information about investment property [Line Items] | |||
Overall capital interest rate | 1.46% | 1.46% | |
Profit margin ratio | 12.00% | 10.00% | |
Capitalization rate | 0.47% | 0.43% | |
Top of range [Member] | |||
Disclosure of detailed information about investment property [Line Items] | |||
Overall capital interest rate | 2.20% | 2.20% | |
Profit margin ratio | 20.00% | 20.00% | |
Capitalization rate | 1.69% | 1.78% | |
At fair value [Member] | |||
Disclosure of detailed information about investment property [Line Items] | |||
Investment properties | $ 17,728 | $ 17,778 |
Intangible Assets - Summary of
Intangible Assets - Summary of Intangible Assets (Detail) $ in Millions, $ in Millions | 1 Months Ended | 12 Months Ended | ||||
Nov. 30, 2017TWD ($) | Dec. 31, 2015TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | $ 47,353 | |||||
Additions-acquired separately | $ 10,935 | $ 9,955 | ||||
Amortization expenses | (3,766) | $ (3,379) | $ (3,080) | |||
Impairment losses | (9) | $ 0 | 0 | 0 | ||
Ending balance | 54,883 | $ 1,852 | 47,353 | |||
Gross carrying amount [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | 63,267 | 63,103 | 52,778 | |||
Additions-acquired separately | 11,305 | 282 | 10,380 | |||
Disposal | (462) | (121) | (377) | |||
Effect of foreign exchange difference | 0 | 0 | 0 | |||
Acquisitions through business combinations | 314 | |||||
Others | 3 | 8 | ||||
Ending balance | 63,103 | 74,110 | 63,267 | 63,103 | ||
Accumulated depreciation, amortization and impairment [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | (15,914) | (12,656) | (9,953) | |||
Amortization expenses | (3,766) | (3,379) | (3,080) | |||
Disposal | 462 | 121 | 377 | |||
Impairment losses | (9) | 0 | ||||
Effect of foreign exchange difference | 0 | 0 | 0 | |||
Others | 0 | |||||
Ending balance | (12,656) | (19,227) | (15,914) | (12,656) | ||
3G and 4G concession [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | 45,796 | |||||
Ending balance | 53,469 | 45,796 | ||||
3G and 4G concession [Member] | Gross carrying amount [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | 59,209 | 59,209 | 49,254 | |||
Additions-acquired separately | 10,935 | 0 | 9,955 | |||
Disposal | 0 | 0 | 0 | |||
Effect of foreign exchange difference | 0 | 0 | 0 | |||
Acquisitions through business combinations | 0 | |||||
Others | 0 | 0 | ||||
Ending balance | 59,209 | 70,144 | 59,209 | 59,209 | ||
3G and 4G concession [Member] | Accumulated depreciation, amortization and impairment [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | (13,413) | (10,608) | (8,104) | |||
Amortization expenses | (3,262) | (2,805) | (2,504) | |||
Disposal | 0 | 0 | 0 | |||
Impairment losses | 0 | 0 | ||||
Effect of foreign exchange difference | 0 | 0 | 0 | |||
Others | 0 | |||||
Ending balance | (10,608) | (16,675) | (13,413) | (10,608) | ||
Computer software [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | 995 | |||||
Ending balance | 880 | 995 | ||||
Computer software [Member] | Gross carrying amount [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | 3,408 | 3,249 | 3,192 | |||
Additions-acquired separately | 366 | 277 | 424 | |||
Disposal | (462) | (121) | (375) | |||
Effect of foreign exchange difference | 0 | 0 | 0 | |||
Acquisitions through business combinations | 0 | |||||
Others | 3 | 8 | ||||
Ending balance | 3,249 | 3,312 | 3,408 | 3,249 | ||
Computer software [Member] | Accumulated depreciation, amortization and impairment [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | (2,413) | (1,983) | (1,793) | |||
Amortization expenses | (481) | (551) | (565) | |||
Disposal | 462 | 121 | 375 | |||
Impairment losses | 0 | 0 | ||||
Effect of foreign exchange difference | 0 | 0 | 0 | |||
Others | 0 | |||||
Ending balance | (1,983) | (2,432) | (2,413) | (1,983) | ||
Goodwill [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | 218 | |||||
Ending balance | 209 | 218 | ||||
Goodwill [Member] | Gross carrying amount [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | 236 | 236 | 181 | |||
Additions-acquired separately | 0 | 0 | 0 | |||
Disposal | 0 | 0 | 0 | |||
Effect of foreign exchange difference | 0 | 0 | 0 | |||
Acquisitions through business combinations | 55 | |||||
Others | 0 | 0 | ||||
Ending balance | 236 | 236 | 236 | 236 | ||
Goodwill [Member] | Accumulated depreciation, amortization and impairment [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | (18) | (18) | (18) | |||
Amortization expenses | 0 | 0 | 0 | |||
Disposal | 0 | 0 | 0 | |||
Impairment losses | (9) | 0 | ||||
Effect of foreign exchange difference | 0 | 0 | 0 | |||
Others | 0 | |||||
Ending balance | (18) | (27) | (18) | (18) | ||
Others [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | 344 | |||||
Ending balance | 325 | 344 | ||||
Others [Member] | Gross carrying amount [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | 414 | 409 | 151 | |||
Additions-acquired separately | 4 | 5 | 1 | |||
Disposal | 0 | 0 | (2) | |||
Effect of foreign exchange difference | 0 | 0 | 0 | |||
Acquisitions through business combinations | 259 | |||||
Others | 0 | 0 | ||||
Ending balance | 409 | 418 | 414 | 409 | ||
Others [Member] | Accumulated depreciation, amortization and impairment [Member] | ||||||
Disclosure of detailed information about intangible assets [Line Items] | ||||||
Beginning balance | (70) | (47) | (38) | |||
Amortization expenses | (23) | (23) | (11) | |||
Disposal | 0 | 0 | 2 | |||
Impairment losses | 0 | 0 | ||||
Effect of foreign exchange difference | 0 | 0 | 0 | |||
Others | 0 | |||||
Ending balance | $ (47) | $ (93) | $ (70) | $ (47) |
Intangible Assets - Additional
Intangible Assets - Additional Information (Detail) - TWD ($) $ in Millions | 1 Months Ended | 12 Months Ended | |
Nov. 30, 2017 | Dec. 31, 2015 | Dec. 31, 2017 | |
Disclosure of detailed information about intangible assets [Line Items] | |||
4G concession fees | $ 10,935 | $ 9,955 | |
Computer software [Member] | Bottom of range [Member] | |||
Disclosure of detailed information about intangible assets [Line Items] | |||
Estimated useful lives | P1Y | ||
Computer software [Member] | Top of range [Member] | |||
Disclosure of detailed information about intangible assets [Line Items] | |||
Estimated useful lives | P10Y | ||
Others [Member] | Bottom of range [Member] | |||
Disclosure of detailed information about intangible assets [Line Items] | |||
Estimated useful lives | P1Y | ||
Others [Member] | Top of range [Member] | |||
Disclosure of detailed information about intangible assets [Line Items] | |||
Estimated useful lives | P20Y |
Other Assets - Summary of Other
Other Assets - Summary of Other Assets (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Miscellaneous Assets [Abstract] | |||
Spare parts | $ 2,059 | $ 1,776 | |
Refundable deposits | 1,860 | 2,083 | |
Other financial assets | 1,000 | 1,000 | |
Others | 2,800 | 2,288 | |
Other assets | 7,719 | 7,147 | |
Others | 124 | 346 | |
Other current assets | 2,183 | $ 74 | 2,122 |
Other financial assets | 1,000 | 1,000 | |
Others | 2,676 | 1,942 | |
Other noncurrent assets | $ 5,536 | $ 187 | $ 5,025 |
Hedging Derivative Financial129
Hedging Derivative Financial Instruments - Summary of Hedging Derivative Financial Instruments (Detail) - Cash flow hedges [Member] - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Disclosure of detailed information about hedging instruments [Line Items] | ||
Cash flow hedge-forward exchange contracts, financial liabilities | $ 1 | $ 1 |
Forward exchange contracts [Member] | ||
Disclosure of detailed information about hedging instruments [Line Items] | ||
Cash flow hedge-forward exchange contracts, financial liabilities | $ 1 | $ 1 |
Hedging Derivative Financial130
Hedging Derivative Financial Instruments - Additional Information (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Disclosure Of Detailed Information About Hedging Instruments [Abstract] | |||
Gain (loss) arising from changes in fair value of the hedged items recognized in other comprehensive income | $ (1) | $ (1) | $ 1 |
Reclassification of gain (loss) arising from forward exchange contracts | $ 2 | $ 1 | $ (1) |
Hedging Derivative Financial131
Hedging Derivative Financial Instruments - Outstanding Forward Exchange Contracts (Detail) - Forward exchange contracts [Member] - Cash flow hedges [Member] € in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2017EUR (€) | Dec. 31, 2016EUR (€) | |
Disclosure of detailed information about hedging instruments [Line Items] | ||||
Currency | EUR/NT$ | EUR/NT$ | ||
Maturity Period | 2018.03-06 | 2,017.03 | ||
Contract Amount | $ 142 | $ 102 | € 4 | € 3 |
Hedging Derivative Financial132
Hedging Derivative Financial Instruments - Loss (Gain) Arising from Hedging Derivative Financial Instruments that have been Reclassified from Equity to Initial Cost of the Property, Plant and Equipment (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Disclosure Of Detailed Information About Hedging Instruments [Abstract] | |||
Construction in progress and equipment to be accepted | $ (2) | $ (15) | $ (18) |
Short Term Loans - Summary of S
Short Term Loans - Summary of Short-term Loans (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of detailed information about borrowings [Line Items] | |||
Total | $ 70 | $ 2 | $ 138 |
Short-term loans [Member] | |||
Disclosure of detailed information about borrowings [Line Items] | |||
Secured loans | 0 | 20 | |
Unsecured loans | $ 70 | $ 118 | |
Short-term loans [Member] | Secured loans [Member] | |||
Disclosure of detailed information about borrowings [Line Items] | |||
Interest rates of loans | 0.00% | 0.00% | 1.98% |
Short-term loans [Member] | Unsecured loans [Member] | Minimum [Member] | |||
Disclosure of detailed information about borrowings [Line Items] | |||
Interest rates of loans | 2.15% | 2.15% | 1.95% |
Short-term loans [Member] | Unsecured loans [Member] | Top of range [Member] | |||
Disclosure of detailed information about borrowings [Line Items] | |||
Interest rates of loans | 2.19% | 2.19% | 2.25% |
Long Term Loans - Summary of Lo
Long Term Loans - Summary of Long-term Loans (Detail) - Long-term loans [Member] - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Disclosure of detailed information about borrowings [Line Items] | ||
Secured loans | $ 1,600 | $ 1,600 |
Secured loans [Member] | ||
Disclosure of detailed information about borrowings [Line Items] | ||
Interest rates of loans | 0.91% | 0.91% |
Long Term Loans - Additional In
Long Term Loans - Additional Information (Detail) - TWD ($) $ in Millions | 1 Months Ended | 2 Months Ended | 4 Months Ended | 12 Months Ended | ||||||
Nov. 30, 2015 | Apr. 30, 2015 | Jan. 31, 2015 | Apr. 30, 2016 | Dec. 31, 2014 | Dec. 31, 2017 | Dec. 31, 2013 | Apr. 30, 2014 | Dec. 31, 2012 | Sep. 30, 2010 | |
Light Era Development Co., Ltd. (LED) [Member] | Chang Hwa Bank Secured Loan [Member] | ||||||||||
Disclosure of detailed information about borrowings [Line Items] | ||||||||||
Early repayment of secured loan | $ 50 | |||||||||
Light Era Development Co., Ltd. (LED) [Member] | Chang Hwa Bank Secured Loan [Member] | Extended Due September 2021 [Member] | ||||||||||
Disclosure of detailed information about borrowings [Line Items] | ||||||||||
Loan due date | September 2,021 | |||||||||
Light Era Development Co., Ltd. (LED) [Member] | Chang Hwa Bank Secured Loan [Member] | Due December 2017 [Member] | ||||||||||
Disclosure of detailed information about borrowings [Line Items] | ||||||||||
Secured loan | $ 400 | |||||||||
Early repayment of secured loan | $ 50 | $ 350 | ||||||||
Loan due date | December 2,017 | |||||||||
Light Era Development Co., Ltd. (LED) [Member] | Chang Hwa Bank Secured Loan [Member] | Due December 2014 [Member] | ||||||||||
Disclosure of detailed information about borrowings [Line Items] | ||||||||||
Secured loan | $ 300 | |||||||||
Loan due date | December 2,014 | |||||||||
Light Era Development Co., Ltd. (LED) [Member] | Chang Hwa Bank Secured Loan [Member] | Due September 2015 [Member] | ||||||||||
Disclosure of detailed information about borrowings [Line Items] | ||||||||||
Secured loan | $ 1,350 | |||||||||
Loan due date | September 2,015 | |||||||||
Chunghwa Precision Test Tech. Co., Ltd. (CHPT) [Member] | Bank of Taiwan Secured Loan [Member] | Due April 2029 [Member] | ||||||||||
Disclosure of detailed information about borrowings [Line Items] | ||||||||||
Secured loan | $ 348 | |||||||||
Early repayment of secured loan | $ 50 | $ 150 | $ 148 | |||||||
Loan due date | April 2,029 |
Trade Notes and Accounts Pay136
Trade Notes and Accounts Payable - Summary of Trade Notes and Accounts Payable (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Trade And Other Current Payables [Abstract] | |||
Trade notes and accounts payable | $ 19,396 | $ 654 | $ 18,810 |
Other Payables - Summary of Oth
Other Payables - Summary of Other Payables (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Trade And Other Current Payables [Abstract] | |||
Accrued salary and compensation | $ 9,748 | $ 9,770 | |
Payables to contractors | 2,058 | 2,396 | |
Accrued compensation to employees and remuneration to directors and supervisors | 1,949 | 2,015 | |
Payables to equipment suppliers | 1,690 | 1,623 | |
Accrued franchise fees | 1,248 | 1,326 | |
Amounts collected for others | 1,203 | 1,407 | |
Accrued maintenance costs | 1,081 | 1,062 | |
Others | 6,024 | 6,819 | |
Total | $ 25,001 | $ 844 | $ 26,418 |
Provisions - Summary of Provisi
Provisions - Summary of Provisions (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Dec. 31, 2014TWD ($) |
Provisions [Abstract] | |||||
Warranties | $ 132 | $ 111 | |||
Trade-in right | 87 | 31 | |||
Employee benefits | 43 | 38 | |||
Others | 5 | 5 | |||
Provisions | 267 | 185 | $ 248 | $ 272 | |
Current | 189 | $ 6 | 119 | ||
Noncurrent | $ 78 | $ 3 | $ 66 |
Provisions - Movements in Provi
Provisions - Movements in Provisions (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Disclosure of other provisions [Line Items] | |||
Beginning balance | $ 185 | $ 248 | $ 272 |
Additional provisions recognized | 155 | 121 | 112 |
Used / forfeited during the year | (73) | (184) | (136) |
Ending balance | 267 | 185 | 248 |
Warranties [Member] | |||
Disclosure of other provisions [Line Items] | |||
Beginning balance | 111 | 213 | 212 |
Additional provisions recognized | 79 | 81 | 100 |
Used / forfeited during the year | (58) | (183) | (99) |
Ending balance | 132 | 111 | 213 |
Trade-in rights [Member] | |||
Disclosure of other provisions [Line Items] | |||
Beginning balance | 31 | 0 | 0 |
Additional provisions recognized | 69 | 31 | 0 |
Used / forfeited during the year | (13) | 0 | 0 |
Ending balance | 87 | 31 | 0 |
Employee benefits [Member] | |||
Disclosure of other provisions [Line Items] | |||
Beginning balance | 38 | 30 | 55 |
Additional provisions recognized | 7 | 9 | 12 |
Used / forfeited during the year | (2) | (1) | (37) |
Ending balance | 43 | 38 | 30 |
Others [Member] | |||
Disclosure of other provisions [Line Items] | |||
Beginning balance | 5 | 5 | 5 |
Additional provisions recognized | 0 | 0 | 0 |
Used / forfeited during the year | 0 | 0 | 0 |
Ending balance | $ 5 | $ 5 | $ 5 |
Advance Receipt - Additional In
Advance Receipt - Additional Information (Detail) $ in Millions | Dec. 31, 2017TWD ($) |
Miscellaneous Current Liabilities [Abstract] | |
Performance guarantee for advance receipts from selling prepaid cards | $ 797 |
Retirement Benefit Plans - Addi
Retirement Benefit Plans - Additional Information (Detail) | 12 Months Ended |
Dec. 31, 2017 | |
Disclosure Of Defined Contribution Plan [line items] | |
Percentage of monthly salaries and wages contributed to employees' individual pension accounts | 6.00% |
Top of range [Member] | |
Disclosure Of Defined Contribution Plan [line items] | |
Defined benefit plan contribution, percentage | 15.00% |
Retirement Benefit Plans - Amou
Retirement Benefit Plans - Amounts Included in Consolidated Balance Sheets from Obligation in Respect of Defined Benefit Plans (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Dec. 31, 2014TWD ($) |
Disclosure Of Defined Benefit Plans [Abstract] | |||||
Present value of funded defined benefit obligation | $ 37,663 | $ 34,572 | |||
Fair value of plan assets | (34,972) | (33,954) | |||
Funded status - deficit | 2,691 | 618 | |||
Net defined benefit liabilities | 2,704 | $ 91 | 1,537 | ||
Net defined benefit assets | (13) | $ 0 | (919) | ||
Defined benefit obligation | $ 2,691 | $ 618 | $ 7,088 | $ 6,462 |
Retirement Benefit Plans - Move
Retirement Benefit Plans - Movements in Defined Benefit Obligation and Fair Value of Plan Assets (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of defined benefit plans [Line Items] | ||||
Net defined benefit liability (asset) at beginning of period | $ 618 | $ 7,088 | $ 6,462 | |
Current service cost | 2,918 | 2,866 | 2,884 | |
Interest expense/interest income | (13) | 27 | 102 | |
Amounts recognized in profit or loss | 2,905 | 2,893 | 2,986 | |
Remeasurement on the net defined benefit liability | ||||
Return on plan assets (excluding amounts included in net interest) | 193 | 352 | (136) | |
Actuarial (gain) losses recognized from changes in demographic assumptions | 15 | (124) | 11 | |
Actuarial (gains) losses recognized from changes in financial assumptions | 1,715 | (1) | ||
Actuarial losses recognized from experience adjustments | 1,816 | 100 | 357 | |
Amounts recognized in other comprehensive income | 2,024 | $ 68 | 2,043 | 231 |
Contributions from employer | (2,635) | (11,235) | (2,435) | |
Benefits paid | 0 | 0 | 0 | |
Benefits paid directly by the Company | (221) | (171) | (156) | |
Net defined benefit liability (asset) at end of period | 2,691 | 618 | 7,088 | |
Present value of funded defined benefit obligation [Member] | ||||
Disclosure of defined benefit plans [Line Items] | ||||
Net defined benefit liability (asset) at beginning of period | 34,572 | 30,882 | 27,958 | |
Current service cost | 2,918 | 2,866 | 2,884 | |
Interest expense/interest income | 506 | 600 | 546 | |
Amounts recognized in profit or loss | 3,424 | 3,466 | 3,430 | |
Remeasurement on the net defined benefit liability | ||||
Return on plan assets (excluding amounts included in net interest) | 0 | 0 | 0 | |
Actuarial (gain) losses recognized from changes in demographic assumptions | 15 | (124) | 11 | |
Actuarial (gains) losses recognized from changes in financial assumptions | 1,715 | (1) | ||
Actuarial losses recognized from experience adjustments | 1,816 | 100 | 357 | |
Amounts recognized in other comprehensive income | 1,831 | 1,691 | 367 | |
Contributions from employer | 0 | 0 | 0 | |
Benefits paid | (1,943) | (1,296) | (717) | |
Benefits paid directly by the Company | (221) | (171) | (156) | |
Net defined benefit liability (asset) at end of period | 37,663 | 34,572 | 30,882 | |
Fair value of plan assets [Member] | ||||
Disclosure of defined benefit plans [Line Items] | ||||
Net defined benefit liability (asset) at beginning of period | 33,954 | 23,794 | 21,496 | |
Current service cost | 0 | 0 | 0 | |
Interest expense/interest income | 519 | 573 | 444 | |
Amounts recognized in profit or loss | 519 | 573 | 444 | |
Remeasurement on the net defined benefit liability | ||||
Return on plan assets (excluding amounts included in net interest) | (193) | (352) | 136 | |
Actuarial (gain) losses recognized from changes in demographic assumptions | 0 | 0 | 0 | |
Actuarial (gains) losses recognized from changes in financial assumptions | 0 | 0 | ||
Actuarial losses recognized from experience adjustments | 0 | 0 | 0 | |
Amounts recognized in other comprehensive income | (193) | (352) | 136 | |
Contributions from employer | 2,635 | 11,235 | 2,435 | |
Benefits paid | (1,943) | (1,296) | (717) | |
Benefits paid directly by the Company | 0 | 0 | 0 | |
Net defined benefit liability (asset) at end of period | $ 34,972 | $ 33,954 | $ 23,794 |
Retirement Benefit Plans - Pens
Retirement Benefit Plans - Pension Costs Recognized in Profit and Loss for Defined Benefit Plans (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Disclosure of defined benefit plans [Line Items] | |||
Defined benefit plans pension costs recognized in profit and loss | $ 2,834 | $ 2,822 | $ 2,914 |
Operating costs [Member] | |||
Disclosure of defined benefit plans [Line Items] | |||
Defined benefit plans pension costs recognized in profit and loss | 1,734 | 1,732 | 1,794 |
Marketing expenses [Member] | |||
Disclosure of defined benefit plans [Line Items] | |||
Defined benefit plans pension costs recognized in profit and loss | 847 | 838 | 856 |
General and administrative expenses [Member] | |||
Disclosure of defined benefit plans [Line Items] | |||
Defined benefit plans pension costs recognized in profit and loss | 156 | 155 | 162 |
Research and development expenses [Member] | |||
Disclosure of defined benefit plans [Line Items] | |||
Defined benefit plans pension costs recognized in profit and loss | $ 97 | $ 97 | $ 102 |
Retirement Benefit Plans - Prin
Retirement Benefit Plans - Principal Assumptions Used for Actuarial Valuations (Detail) | Dec. 31, 2017 | Dec. 31, 2016 |
Disclosure of defined benefit plans [Line Items] | ||
Discount rates | 1.50% | 1.50% |
Bottom of range [Member] | ||
Disclosure of defined benefit plans [Line Items] | ||
Expected rates of salary increase | 1.20% | 1.20% |
Top of range [Member] | ||
Disclosure of defined benefit plans [Line Items] | ||
Expected rates of salary increase | 2.00% | 2.00% |
Retirement Benefit Plans - Effe
Retirement Benefit Plans - Effect on Present Value of Defined Benefit Obligation Due to a Reasonably Possible Change of the Significant Actuarial Assumptions (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Discount rates [Member] | ||
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] | ||
0.5% increase | $ (1,232) | $ (1,219) |
0.5% decrease | 1,310 | 1,298 |
Expected rates of salary increases [Member] | ||
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] | ||
0.5% increase | 1,398 | 1,379 |
0.5% decrease | $ (1,326) | $ (1,306) |
Retirement Benefit Plans - E147
Retirement Benefit Plans - Effect on Present Value of Defined Benefit Obligation Due to a Reasonably Possible Change of the Significant Actuarial Assumptions (Parenthetical) (Detail) | Dec. 31, 2017 | Dec. 31, 2016 |
Discount rates [Member] | ||
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] | ||
Percentage increase in actuarial assumptions | 0.50% | 0.50% |
Percentage decrease in actuarial assumptions | 0.50% | 0.50% |
Expected rates of salary increases [Member] | ||
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] | ||
Percentage increase in actuarial assumptions | 0.50% | 0.50% |
Percentage decrease in actuarial assumptions | 0.50% | 0.50% |
Retirement Benefit Plans - Summ
Retirement Benefit Plans - Summary of Sensitivity Analysis (Detail) $ in Millions | 12 Months Ended | |
Dec. 31, 2017TWD ($)yr | Dec. 31, 2016TWD ($)yr | |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] | ||
The expected contributions to the plan for the next year | $ | $ 4,393 | $ 2,724 |
Bottom of range [Member] | ||
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] | ||
The average duration of the defined benefit obligation | 6 | 7 |
Top of range [Member] | ||
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] | ||
The average duration of the defined benefit obligation | 13 | 14 |
Retirement Benefit Plans - Matu
Retirement Benefit Plans - Maturity Analysis of Undiscounted Benefit Payments (Detail) $ in Millions | 12 Months Ended |
Dec. 31, 2017TWD ($) | |
Disclosure Of Defined Benefit Plans [Abstract] | |
2,018 | $ 2,042 |
2,019 | 4,716 |
2,020 | 8,088 |
2,021 | 11,201 |
2022 and thereafter | 48,310 |
Total | $ 74,357 |
Equity - Summary of Common Stoc
Equity - Summary of Common Stocks (Detail) $ in Millions | Dec. 31, 2017TWD ($)shares | Dec. 31, 2017USD ($)shares | Dec. 31, 2016TWD ($)shares |
Disclosure Of Classes Of Share Capital [Abstract] | |||
Number of authorized shares | 12,000,000,000 | 12,000,000,000 | 12,000,000,000 |
Authorized shares | $ | $ 120,000,000,000 | $ 120,000,000,000 | |
Number of issued and paid shares | 7,757,000,000 | 7,757,000,000 | 7,757,000,000 |
Issued and outstanding shares | $ 77,574,000,000 | $ 2,617 | $ 77,574,000,000 |
Equity - Additional Information
Equity - Additional Information (Detail) ADSs in Millions | 12 Months Ended |
Dec. 31, 2017ADSs$ / sharesshares | |
Disclosure of classes of share capital [Line Items] | |
Common stock par value | $ / shares | $ 10 |
Percentage of American Depositary Shares as common stock outstanding | 3.36% |
Percentage of net income allocation toward legal reserve | 10.00% |
Bottom of range [Member] | |
Disclosure of classes of share capital [Line Items] | |
Percentage of retained earnings distributed as dividend | 50.00% |
Dividend distributed per share threshold in the form of common stocks | $ / shares | $ 0.10 |
Percentage of legal reserve on additional paid in capital | 25.00% |
American Depositary Shares [Member] | |
Disclosure of classes of share capital [Line Items] | |
Number of common stocks represented by 1 ADS | shares | 10 |
Number of common stock outstanding | shares | 261 |
Number of units | ADSs | 26 |
Equity - Adjustments of Additio
Equity - Adjustments of Additional Paid-in Capital (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Beginning balance | $ 366,928 | $ 369,339 | $ 365,712 | |
Partial disposal of interests in subsidiaries | 106 | 83 | 45 | |
Unclaimed dividend | 3 | |||
Change in additional paid-in capital from investments in associates and joint ventures accounted for using equity method | 0 | |||
Change in additional paid-in capital for not participating in the capital increase of a subsidiary | 2,552 | 1,175 | ||
Other changes in additional paid-in capital in subsidiaries | 0 | 3 | ||
Subsidiary purchased its treasury stock | (492) | |||
Share-based payment transactions of subsidiaries | 22 | 17 | 36 | |
Ending balance | 369,410 | $ 12,463 | 366,928 | 369,339 |
Share premium [Member] | ||||
Beginning balance | 126,045 | 126,045 | 126,045 | |
Ending balance | 126,045 | 126,045 | 126,045 | |
Movements of additional paid-in capital arising from changes in equities of subsidiaries [Member] | ||||
Beginning balance | 389 | 0 | 14 | |
Partial disposal of interests in subsidiaries | 1 | 0 | 0 | |
Change in additional paid-in capital for not participating in the capital increase of a subsidiary | 802 | 389 | ||
Other changes in additional paid-in capital in subsidiaries | 0 | 1 | ||
Subsidiary purchased its treasury stock | (15) | |||
Share-based payment transactions of subsidiaries | 2 | 0 | ||
Treasury stock transfer of subsidiaries | 27 | |||
Ending balance | 1,221 | 389 | 0 | |
Difference between consideration received and carrying amount of the subsidiaries' net assets upon disposal [Member] | ||||
Beginning balance | 85 | 27 | 0 | |
Partial disposal of interests in subsidiaries | 76 | 58 | 27 | |
Ending balance | 161 | 85 | 27 | |
Donated capital [Member] | ||||
Beginning balance | 13 | 13 | 13 | |
Unclaimed dividend | 3 | |||
Ending balance | 16 | 13 | 13 | |
Stockholders' contribution due to privatization [Member] | ||||
Beginning balance | 20,648 | 20,648 | 20,648 | |
Ending balance | 20,648 | 20,648 | 20,648 | |
Additional paid-in capital [Member] | ||||
Beginning balance | 147,180 | 146,733 | 146,720 | |
Partial disposal of interests in subsidiaries | 77 | 58 | 27 | |
Unclaimed dividend | 3 | |||
Change in additional paid-in capital from investments in associates and joint ventures accounted for using equity method | 0 | |||
Change in additional paid-in capital for not participating in the capital increase of a subsidiary | 802 | 389 | ||
Other changes in additional paid-in capital in subsidiaries | 0 | 1 | ||
Subsidiary purchased its treasury stock | (15) | |||
Share-based payment transactions of subsidiaries | 2 | 0 | 0 | |
Treasury stock transfer of subsidiaries | 27 | |||
Ending balance | $ 148,091 | $ 4,996 | $ 147,180 | $ 146,733 |
Equity - Appropriations of Earn
Equity - Appropriations of Earnings (Detail) - TWD ($) $ / shares in Units, $ in Millions | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Special reserve | $ 0 | $ 0 | |
Cash dividends per share | $ 4.796 | $ 4.9419 | $ 5.4852 |
Total retained earnings [Member] | |||
Special reserve | $ 0 | $ 5 | $ 0 |
Reversal of special reserve | 5 | ||
Cash dividends | $ 37,205 | $ 38,336 | $ 42,551 |
Equity - Unrealized Gain (Loss)
Equity - Unrealized Gain (Loss) on Available-for-sale Financial Assets (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Beginning balance | $ 366,928 | $ 369,339 | $ 365,712 | |
Unrealized gain (loss) on available-for-sale financial assets | 605 | (721) | (671) | |
Income tax relating to unrealized gain and loss on available-for-sale financial assets | (3) | (2) | 2 | |
Ending balance | 369,410 | $ 12,463 | 366,928 | 369,339 |
Unrealized gain (loss) on available-for-sale financial assets [Member] | ||||
Beginning balance | (51) | 91 | 740 | |
Unrealized gain (loss) on available-for-sale financial assets | 607 | (721) | (670) | |
Income tax relating to unrealized gain and loss on available-for-sale financial assets | 2 | 2 | (2) | |
Amount reclassified from equity to profit or loss on disposal of available-for-sale financial assets | 0 | 0 | 0 | |
Amount reclassified from equity to profit or loss on impairment of available-for-sale financial assets | 0 | 577 | 23 | |
Ending balance | $ 558 | $ 19 | $ (51) | $ 91 |
Equity - Noncontrolling Interes
Equity - Noncontrolling Interests (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Beginning balance | $ 366,928 | $ 369,339 | $ 365,712 | |
Profit Allocated to Noncontrolling Interests | 1,172 | $ 40 | 1,141 | 813 |
Unrealized gain (loss) on available-for-sale financial assets | 605 | (721) | (671) | |
Income tax relating to unrealized gain and loss on available-for-sale financial assets | (3) | (2) | 2 | |
Income tax relating to remeasurements of defined benefit pension plans | 344 | 347 | 39 | |
Cash dividends distributed by subsidiaries | (942) | (710) | (350) | |
Partial disposal of interests in subsidiaries | 106 | 83 | 45 | |
Change in additional paid-in capital for not participating in the capital increase of a subsidiary | 2,552 | 1,175 | ||
Other changes in additional paid-in capital of subsidiaries | 0 | 3 | ||
Share-based payment transactions of subsidiaries | 22 | 17 | 36 | |
Subsidiary purchased its treasury stock | (492) | |||
Net increase in noncontrolling interests | 223 | 5 | 39 | |
Ending balance | 369,410 | 12,463 | 366,928 | 369,339 |
Noncontrolling interests [Member] | ||||
Beginning balance | 6,272 | 5,065 | 4,924 | |
Profit Allocated to Noncontrolling Interests | 1,172 | 1,141 | 813 | |
Exchange differences arising from the translation of the foreign operations | (12) | (41) | (3) | |
Unrealized gain (loss) on available-for-sale financial assets | (2) | 0 | 2 | |
Income tax relating to unrealized gain and loss on available-for-sale financial assets | 1 | 0 | 0 | |
Remeasurements of defined benefit pension plans | (8) | (18) | (3) | |
Income tax relating to remeasurements of defined benefit pension plans | 0 | 3 | 1 | |
Share of other comprehensive income (loss) of associates accounted for using equity method | (2) | (1) | 2 | |
Cash dividends distributed by subsidiaries | (942) | (710) | (350) | |
Partial disposal of interests in subsidiaries | 29 | 25 | 18 | |
Change in additional paid-in capital for not participating in the capital increase of a subsidiary | 1,750 | 786 | 0 | |
Other changes in additional paid-in capital of subsidiaries | 0 | 0 | 2 | |
Share-based payment transactions of subsidiaries | 20 | 17 | 36 | |
Subsidiary purchased its treasury stock | 0 | 0 | (416) | |
Net increase in noncontrolling interests | 196 | 5 | 39 | |
Ending balance | $ 8,474 | $ 286 | $ 6,272 | $ 5,065 |
Net Income and Other Compreh156
Net Income and Other Comprehensive Income (Loss) - Other Income and Expenses (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Analysis Of Income And Expense [Abstract] | ||||
Loss on disposal of property, plant and equipment | $ (107) | $ (48) | $ (109) | |
Impairment loss on property, plant and equipment | 0 | $ 0 | (596) | (138) |
Reversal of impairment loss | 11 | 0 | 148 | 142 |
Loss on disposal of intangible assets | 0 | 0 | 0 | 0 |
Impairment losses | (9) | 0 | 0 | 0 |
Other income and expenses | $ (105) | $ (3) | $ (496) | $ (105) |
Net Income and Other Compreh157
Net Income and Other Comprehensive Income (Loss) - Other Income (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Analysis Of Income And Expense [Abstract] | ||||
Dividend income | $ 328 | $ 11 | $ 391 | $ 218 |
Rental income | 61 | 41 | 38 | |
Income from Piping Fund | 0 | 202 | 202 | |
Others | 447 | 438 | 192 | |
Other income | $ 836 | $ 28 | $ 1,072 | $ 650 |
Net Income and Other Compreh158
Net Income and Other Comprehensive Income (Loss) - Other Gains and Losses (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Analysis Of Income And Expense [Abstract] | ||||
Net foreign currency exchange gains (losses) | $ (88) | $ 181 | $ 63 | |
Gain on disposal of financial instruments | 3 | $ 0 | 0 | 0 |
Valuation gain (loss) on financial assets and liabilities at fair value through profit or loss, net | 1 | 0 | (1) | 0 |
Gain (loss) on disposal of investments accounted for using equity method | 0 | 0 | (2) | 4 |
Impairment loss on investments accounted for using equity method | 0 | 0 | 0 | (8) |
Impairment loss on available-for-sale financial assets | 0 | 0 | (577) | (107) |
Others | (48) | (49) | (180) | |
Other gains and losses | $ (132) | $ (4) | $ (448) | $ (228) |
Net Income and Other Compreh159
Net Income and Other Comprehensive Income (Loss) - Impairment Loss (Reversal of Impairment Loss) on Financial Instruments and Non-financial Assets (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure Of Impairment Loss And Reversal Of Impairment Loss [Abstract] | ||||
Trade notes and accounts receivable | $ 578 | $ 943 | $ 480 | |
Other receivables | 65 | (2) | 39 | |
Available-for-sale financial assets | 0 | $ 0 | 577 | 107 |
Inventories | 52 | 2 | 192 | 198 |
Impairment losses | 0 | 0 | 596 | 138 |
Impairment loss on investments accounted for using equity method | 0 | 0 | 0 | 8 |
Investment properties | (11) | 0 | (148) | (142) |
Impairment loss on intangible assets | $ 9 | $ 0 | $ 0 | $ 0 |
Net Income and Other Compreh160
Net Income and Other Comprehensive Income (Loss) - Depreciation and Amortization Expenses (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of depreciation and amortization [Line Items] | ||||
Property, plant and equipment | $ 28,143 | $ 29,087 | $ 30,350 | |
Investment properties | 21 | 19 | 18 | |
Intangible assets | 3,766 | 3,379 | 3,080 | |
Total depreciation and amortization expenses | 31,930 | 32,485 | 33,448 | |
Depreciation expenses | 28,164 | $ 950 | 29,106 | 30,368 |
Amortization expenses | 3,766 | $ 127 | 3,379 | 3,080 |
Operating costs [Member] | ||||
Disclosure of depreciation and amortization [Line Items] | ||||
Depreciation expenses | 26,402 | 27,214 | 28,292 | |
Amortization expenses | 3,473 | 3,042 | 2,742 | |
Operating expenses [Member] | ||||
Disclosure of depreciation and amortization [Line Items] | ||||
Depreciation expenses | 1,762 | 1,892 | 2,076 | |
Marketing expenses [Member] | ||||
Disclosure of depreciation and amortization [Line Items] | ||||
Amortization expenses | 154 | 173 | 178 | |
General and administrative expenses [Member] | ||||
Disclosure of depreciation and amortization [Line Items] | ||||
Amortization expenses | 104 | 126 | 116 | |
Research and development expenses [Member] | ||||
Disclosure of depreciation and amortization [Line Items] | ||||
Amortization expenses | $ 35 | $ 38 | $ 44 |
Net Income and Other Compreh161
Net Income and Other Comprehensive Income (Loss) - Employee Benefit Expenses (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Post-employment benefit | ||||
Defined contribution plans | $ 594 | $ 544 | $ 489 | |
Defined benefit plans pension costs recognized in profit and loss | 2,834 | 2,822 | 2,914 | |
Post-employment benefit | 3,428 | 3,366 | 3,403 | |
Share-based payment | ||||
Compensation cost of share-based payment transactions | 22 | $ 1 | 17 | 36 |
Other employee benefit | ||||
Salaries | 25,760 | 25,985 | 25,526 | |
Insurance | 2,748 | 2,652 | 2,643 | |
Others | 15,449 | 15,730 | 15,717 | |
Other employee benefit | 43,957 | 44,367 | 43,886 | |
Employee benefit expenses | 47,407 | 47,750 | 47,325 | |
Summary by functions | ||||
Compensation distributed to the employees | 1,702 | 1,928 | ||
Remuneration paid to the directors | 42 | 45 | ||
Operating costs [Member] | ||||
Post-employment benefit | ||||
Defined benefit plans pension costs recognized in profit and loss | 1,734 | 1,732 | 1,794 | |
Other employee benefit | ||||
Employee benefit expenses | 24,725 | 25,190 | 25,320 | |
Operating Expenses | ||||
Other employee benefit | ||||
Employee benefit expenses | $ 22,682 | $ 22,560 | $ 22,005 |
Net Income and Other Compreh162
Net Income and Other Comprehensive Income (Loss) - Additional Information (Detail) $ in Millions | 12 Months Ended |
Dec. 31, 2017TWD ($) | |
Employee Benefits Expense [Line Items] | |
Employees' compensation payables | $ 1,596 |
Remuneration to directors payables | $ 41 |
Minimum [Member] | |
Employee Benefits Expense [Line Items] | |
Employees' compensation distribution rate | 1.70% |
Top of range [Member] | |
Employee Benefits Expense [Line Items] | |
Employees' compensation distribution rate | 4.30% |
Directors' remuneration distribution rate | 0.17% |
Net Income and Other Compreh163
Net Income and Other Comprehensive Income (Loss) - Reclassification Adjustments of Other Comprehensive Income (Loss) (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Unrealized gain (loss) on available-for-sale financial assets | ||||
Arising during the year | $ 605 | $ (721) | $ (671) | |
Reclassification adjustments | ||||
Upon disposal | 0 | 0 | 0 | |
Upon impairment | 0 | 577 | 26 | |
Unrealized gain (loss) on available-for- sale financial assets | 605 | $ 21 | (144) | (645) |
Cash flow hedges | ||||
Gain arising during the year | 3 | 15 | 18 | |
Reclassification adjustments included in profit or loss | (2) | (1) | 1 | |
Adjusted against the carrying amount of hedged items | (2) | (15) | (18) | |
Cash flow hedges | $ (1) | $ 0 | $ (1) | $ 1 |
Income Tax - Major Components o
Income Tax - Major Components of Income Tax Expense (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Current tax | ||||
Current tax expenses recognized for the year | $ 7,996 | $ 6,736 | $ 8,570 | |
Tax on unappropriated earnings | (60) | (346) | 821 | |
Income tax adjustments on prior years | (2) | (22) | (83) | |
Others | 10 | 15 | 15 | |
Current tax | 7,944 | 6,383 | 9,323 | |
Deferred tax | ||||
Deferred tax expense recognized for the year | (101) | 1,404 | (222) | |
Income tax adjustments on prior years | 6 | 0 | 0 | |
Deferred tax | (95) | 1,404 | (222) | |
Income tax expense recognized in profit or loss | $ 7,849 | $ 265 | $ 7,787 | $ 9,101 |
Income Tax - Reconciliation of
Income Tax - Reconciliation of Accounting Profit and Income Tax Expense (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Reconciliation Of Accounting Profit Multiplied By Applicable Tax Rates [Abstract] | ||||
Income before income tax | $ 48,009 | $ 1,620 | $ 49,413 | $ 51,953 |
Income tax expense calculated at the statutory rate (17%) | 8,162 | 8,400 | 8,832 | |
Nondeductible revenues and expenses in determining taxable income | 34 | 5 | 28 | |
Imputed income on tax | 0 | 0 | 0 | |
Unrecognized deductible temporary differences | (1) | (9) | 11 | |
Unrecognized loss carryforwards | 10 | 12 | 83 | |
Tax-exempt income | (87) | (25) | (183) | |
Income tax on unappropriated earnings | (60) | (346) | 821 | |
Investment credits | (212) | (234) | (329) | |
Effect of different tax rates of group entities operating in other jurisdictions | (2) | (8) | (94) | |
Income tax adjustments on prior years | 4 | (22) | (83) | |
Others | 1 | 14 | 15 | |
Income tax expense recognized in profit or loss | $ 7,849 | $ 265 | $ 7,787 | $ 9,101 |
Income Tax - Reconciliation 166
Income Tax - Reconciliation of Accounting Profit and Income Tax Expense (Parenthetical) (Detail) | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Reconciliation Of Accounting Profit Multiplied By Applicable Tax Rates [Abstract] | |||
Statutory rate | 17.00% | 17.00% | 17.00% |
Income Tax - Additional Informa
Income Tax - Additional Information (Detail) - TWD ($) $ in Millions | 12 Months Ended | |||
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Income tax [Line Items] | ||||
Applicable tax rate | 17.00% | 17.00% | 17.00% | |
Creditable ratios for distribution of earnings | 20.48% | |||
Unappropriated earnings [Member] | ||||
Income tax [Line Items] | ||||
Applicable tax rate | 10.00% | |||
Scenario Plan | ||||
Income tax [Line Items] | ||||
Applicable tax rate | 20.00% | |||
Increase in deferred tax assets | $ 480 | |||
Increase in deferred tax liabilities | $ 236 | |||
Scenario Plan | Unappropriated earnings [Member] | ||||
Income tax [Line Items] | ||||
Applicable tax rate | 5.00% | |||
China [Member] | ||||
Income tax [Line Items] | ||||
Applicable tax rate | 25.00% | 25.00% | 25.00% |
Income Tax - Income Tax Expense
Income Tax - Income Tax Expense (Benefit) Recognized in Other Comprehensive Income (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Deferred tax | |||
Unrealized gain or loss on available-for-sale financial assets | $ (3) | $ (2) | $ 2 |
Remeasurement on defined benefit plan | (344) | (347) | (39) |
Total income tax benefit recognized in other comprehensive income | $ (347) | $ (349) | $ (37) |
Income Tax - Current Tax Assets
Income Tax - Current Tax Assets and Liabilities (Detail) $ in Millions, $ in Millions | Jan. 01, 2018TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Major Components Of Tax Expense Income [Abstract] | ||||
Tax refund receivable (included in other current assets - other) | $ 2 | $ 5 | ||
Income tax payable | $ 10,901 | $ 8,674 | $ 293 | $ 6,522 |
Income Tax - Movements of Defer
Income Tax - Movements of Deferred Income Tax Assets and Liabilities (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Income tax [Line Items] | |||
Recognized in Profit or Loss | $ 101 | $ (1,404) | $ 222 |
Recognized in Other Comprehensive Income | 347 | 349 | 37 |
Deferred tax asset [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 2,322 | 2,061 | 1,826 |
Recognized in Profit or Loss | 64 | (86) | 192 |
Recognized in Other Comprehensive Income | 344 | 347 | 39 |
From Business Combination | 4 | ||
Ending balance | 2,730 | 2,322 | 2,061 |
Deferred tax asset [Member] | Present value of funded defined benefit obligation [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 1,374 | 1,206 | 1,096 |
Recognized in Profit or Loss | 5 | (179) | 71 |
Recognized in Other Comprehensive Income | 344 | 347 | 39 |
Ending balance | 1,723 | 1,374 | 1,206 |
Deferred tax asset [Member] | Share of profits of associates and joint ventures accounted for using equity method [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 330 | 325 | 277 |
Recognized in Profit or Loss | 1 | 5 | 48 |
Ending balance | 331 | 330 | 325 |
Deferred tax asset [Member] | Allowance for doubtful accounts [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 230 | 169 | 114 |
Recognized in Profit or Loss | 59 | 61 | 55 |
Ending balance | 289 | 230 | 169 |
Deferred tax asset [Member] | Impairment loss on property, plant and equipment [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 122 | 44 | 32 |
Recognized in Profit or Loss | (10) | 78 | 12 |
Ending balance | 112 | 122 | 44 |
Deferred tax asset [Member] | Deferred revenue [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 117 | 136 | 156 |
Recognized in Profit or Loss | (11) | (19) | (20) |
Ending balance | 106 | 117 | 136 |
Deferred tax asset [Member] | Valuation loss on inventory [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 20 | 33 | 41 |
Recognized in Profit or Loss | 3 | (13) | (8) |
Ending balance | 23 | 20 | 33 |
Deferred tax asset [Member] | Accrued award credits liabilities [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 20 | 22 | 28 |
Recognized in Profit or Loss | (5) | (2) | (6) |
Ending balance | 15 | 20 | 22 |
Deferred tax asset [Member] | Warranties [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 19 | 18 | 19 |
Recognized in Profit or Loss | 3 | 1 | (1) |
Ending balance | 22 | 19 | 18 |
Deferred tax asset [Member] | Property, plant and equipment [member] | |||
Income tax [Line Items] | |||
Beginning balance | 2 | 2 | 0 |
From Business Combination | 2 | ||
Ending balance | 2 | 2 | 2 |
Deferred tax asset [Member] | Unrealised foreign exchange gains (losses) [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 0 | 18 | 0 |
Recognized in Profit or Loss | 17 | (18) | 18 |
Ending balance | 17 | 0 | 18 |
Deferred tax asset [Member] | Others [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 34 | 40 | 34 |
Recognized in Profit or Loss | (5) | (6) | 6 |
Ending balance | 29 | 34 | 40 |
Deferred tax asset [Member] | Temporary differences [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 2,268 | 2,013 | 1,797 |
Recognized in Profit or Loss | 72 | (92) | 175 |
Recognized in Other Comprehensive Income | 344 | 347 | 39 |
From Business Combination | 2 | ||
Ending balance | 2,684 | 2,268 | 2,013 |
Deferred tax asset [Member] | Unused tax losses [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 54 | 48 | 29 |
Recognized in Profit or Loss | (8) | 6 | 17 |
From Business Combination | 2 | ||
Ending balance | 46 | 54 | 48 |
Deferred tax asset [Member] | Trade-in right [Member] | |||
Income tax [Line Items] | |||
Beginning balance | 0 | ||
Recognized in Profit or Loss | 15 | ||
Ending balance | 15 | 0 | |
Deferred tax liability [Member] | |||
Income tax [Line Items] | |||
Beginning balance | (1,464) | (148) | (132) |
Recognized in Profit or Loss | 31 | (1,318) | 30 |
Recognized in Other Comprehensive Income | 3 | 2 | (2) |
From Business Combination | (44) | ||
Ending balance | (1,430) | (1,464) | (148) |
Deferred tax liability [Member] | Present value of funded defined benefit obligation [Member] | |||
Income tax [Line Items] | |||
Beginning balance | (1,269) | (1) | 0 |
Recognized in Profit or Loss | 4 | (1,268) | (1) |
Ending balance | (1,265) | (1,269) | (1) |
Deferred tax liability [Member] | Unrealised foreign exchange gains (losses) [Member] | |||
Income tax [Line Items] | |||
Beginning balance | (10) | (1) | (29) |
Recognized in Profit or Loss | 10 | (9) | 28 |
Ending balance | 0 | (10) | (1) |
Deferred tax liability [Member] | Others [Member] | |||
Income tax [Line Items] | |||
Beginning balance | (1) | (1) | 0 |
Recognized in Profit or Loss | 0 | 0 | (1) |
Ending balance | (1) | (1) | (1) |
Deferred tax liability [Member] | Land value incremental tax [Member] | |||
Income tax [Line Items] | |||
Beginning balance | (95) | (95) | (95) |
Ending balance | (95) | (95) | (95) |
Deferred tax liability [Member] | Deferred revenue for award credits [Member] | |||
Income tax [Line Items] | |||
Beginning balance | (46) | (2) | (5) |
Recognized in Profit or Loss | 17 | (44) | 3 |
Ending balance | (29) | (46) | (2) |
Deferred tax liability [Member] | Intangible assets and goodwill [member] | |||
Income tax [Line Items] | |||
Beginning balance | (40) | (43) | 0 |
Recognized in Profit or Loss | 1 | 3 | 1 |
From Business Combination | (44) | ||
Ending balance | (39) | (40) | (43) |
Deferred tax liability [Member] | Valuation gain or loss on financial instruments, net [Member] | |||
Income tax [Line Items] | |||
Beginning balance | (3) | (5) | (3) |
Recognized in Profit or Loss | (1) | 0 | 0 |
Recognized in Other Comprehensive Income | 3 | 2 | (2) |
Ending balance | $ (1) | $ (3) | $ (5) |
Income Tax - Items for Which No
Income Tax - Items for Which No Deferred Income Tax Assets Have Been Recognized (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||
Loss carryforwards | $ 341 | $ 335 |
Deductible temporary differences | 2 | 3 |
2018 [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||
Loss carryforwards | 126 | 126 |
2019 [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||
Loss carryforwards | 138 | 138 |
2020 [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||
Loss carryforwards | 42 | 42 |
2021 [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||
Loss carryforwards | 9 | 13 |
2022 [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||
Loss carryforwards | 11 | 1 |
2023 [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||
Loss carryforwards | 0 | 1 |
2024 [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||
Loss carryforwards | 0 | 0 |
2025 [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||
Loss carryforwards | 13 | 14 |
2026 [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||
Loss carryforwards | 0 | 0 |
2027 [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | ||
Loss carryforwards | $ 2 | $ 0 |
Income Tax - Information About
Income Tax - Information About Unused Loss Carryforwards (Detail) $ in Millions, $ in Millions | Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) |
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | |||
Remaining creditable amount | $ 2,730 | $ 92 | $ 2,322 |
Unused tax losses [Member] | |||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | |||
Remaining creditable amount | 387 | ||
Unused tax losses [Member] | 2018 [Member] | |||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | |||
Remaining creditable amount | 126 | ||
Unused tax losses [Member] | 2019 [Member] | |||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | |||
Remaining creditable amount | 138 | ||
Unused tax losses [Member] | 2020 [Member] | |||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | |||
Remaining creditable amount | 45 | ||
Unused tax losses [Member] | 2021 [Member] | |||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | |||
Remaining creditable amount | 20 | ||
Unused tax losses [Member] | 2022 [Member] | |||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | |||
Remaining creditable amount | 12 | ||
Unused tax losses [Member] | 2023 [Member] | |||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | |||
Remaining creditable amount | 1 | ||
Unused tax losses [Member] | 2024 [Member] | |||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | |||
Remaining creditable amount | 4 | ||
Unused tax losses [Member] | 2025 [Member] | |||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | |||
Remaining creditable amount | 28 | ||
Unused tax losses [Member] | 2026 [Member] | |||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | |||
Remaining creditable amount | 10 | ||
Unused tax losses [Member] | 2027 [Member] | |||
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] | |||
Remaining creditable amount | $ 3 |
Income Tax - Imputation Credit
Income Tax - Imputation Credit Account (Detail) $ in Millions | Dec. 31, 2016TWD ($) |
Major Components Of Tax Expense Income [Abstract] | |
Balance of Imputation Credit Account (“ICA”) | $ 7,691 |
Earnings Per Share - Net Income
Earnings Per Share - Net Income and Weighted Average Number of Common Stocks Used in Calculation of Earnings Per Share (Detail) shares in Millions, $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($)shares | Dec. 31, 2017USD ($)shares | Dec. 31, 2016TWD ($)shares | Dec. 31, 2015TWD ($)shares | |
Net income used to compute the basic earnings per share | ||||
Net income attributable to the parent | $ 38,988 | $ 1,315 | $ 40,485 | $ 42,039 |
Assumed conversion of all dilutive potential common stocks | ||||
Employee stock options, employee bonus and compensation of subsidiaries | $ | 0 | (1) | (1) | |
Net income used to compute the diluted earnings per share | $ | $ 38,988 | $ 40,484 | $ 42,038 | |
Weighted average number of common stocks used to compute the basic earnings per share | 7,757 | 7,757 | 7,757 | 7,757 |
Assumed conversion of all dilutive potential common stocks | ||||
Employee bonus or employee compensation | 11 | 11 | 12 | 19 |
Weighted average number of common stocks used to compute the diluted earnings per share | 7,768 | 7,768 | 7,769 | 7,776 |
Share-based Payment Arrangem175
Share-based Payment Arrangement - SENAO Share-based Compensation Plan (Detail) - Senao International Co., Ltd. (SENAO) [Member] | 12 Months Ended | |||||||
Dec. 31, 2017TWD ($) | Jul. 31, 2017TWD ($) | Jun. 30, 2017TWD ($) | Dec. 31, 2016TWD ($) | Jul. 31, 2016TWD ($) | Jun. 30, 2016TWD ($) | Dec. 31, 2015TWD ($) | Jul. 31, 2015TWD ($) | |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||||
Effective Date | 2012.05.28 | |||||||
Grant Date | 2013.05.07 | |||||||
Stock Options Units | 10,000,000 | |||||||
Exercise Price | $ 70.70 | $ 70.70 | $ 76.10 | $ 76.10 | $ 76.10 | $ 81.40 | $ 81.40 | $ 84.30 |
Original price | $ 93 |
Share-based Payments Arrangemen
Share-based Payments Arrangement - Additional Information (Detail) $ in Millions | Dec. 19, 2017TWD ($)shares | Feb. 08, 2017shares | Dec. 08, 2015shares | Oct. 22, 2015TWD ($)shares | May 07, 2013shares | Dec. 31, 2017TWD ($)shares | Dec. 31, 2017USD ($)shares | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Jul. 31, 2017TWD ($) | Jun. 30, 2017TWD ($) | Jul. 31, 2016TWD ($) | Jun. 30, 2016TWD ($) | Jul. 31, 2015TWD ($) |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||||||||||
Compensation costs | $ 22,000,000 | $ 1 | $ 17,000,000 | $ 36,000,000 | ||||||||||
Senao International Co., Ltd. (SENAO) [Member] | ||||||||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||||||||||
Number of common share each option is eligible | shares | 1 | |||||||||||||
Option expire period | six years | |||||||||||||
Compensation costs | 4,000,000 | 13,000,000 | 35,000,000 | |||||||||||
Exercise Price | 70.70 | 76.10 | 81.40 | $ 70.70 | $ 76.10 | $ 76.10 | $ 81.40 | $ 84.30 | ||||||
Senao International Co., Ltd. (SENAO) [Member] | Stock Option Granted in May and November 2017 [Member] | ||||||||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||||||||||
Compensation costs | $ 9,000,000 | |||||||||||||
Number of treasury stock transfer to its specific employees | shares | 3,342,000 | 3,342,000 | ||||||||||||
Senao International Co., Ltd. (SENAO) [Member] | 2 years after grant date [Member] | ||||||||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||||||||||
Vesting period | two years | |||||||||||||
Vesting percentage | 50.00% | |||||||||||||
Senao International Co., Ltd. (SENAO) [Member] | 3 years after grant date [Member] | ||||||||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||||||||||
Vesting period | three years | |||||||||||||
Vesting percentage | 25.00% | |||||||||||||
Senao International Co., Ltd. (SENAO) [Member] | 4 years after grant date [Member] | ||||||||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||||||||||
Vesting period | four years | |||||||||||||
Vesting percentage | 25.00% | |||||||||||||
CHIEF Telecom Inc. (CHIEF) [Member] | ||||||||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||||||||||
Number of common share each option is eligible | shares | 1,000 | 1,000 | ||||||||||||
Exercise Price | $ 147 | $ 43 | $ 34.40 | $ 43 | ||||||||||
CHIEF Telecom Inc. (CHIEF) [Member] | Granted on October 22, 2015 [Member] | ||||||||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||||||||||
Option expire period | five years | five years | ||||||||||||
Vesting period | two years | two years | ||||||||||||
Compensation costs | $ 3,000,000 | 4,000,000 | $ 1,000,000 | |||||||||||
Exercise Price | $ 34.40 | 34.40 | ||||||||||||
CHIEF Telecom Inc. (CHIEF) [Member] | Granted on December 19, 2017 [Member] | ||||||||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||||||||||
Option expire period | five years | five years | ||||||||||||
Vesting period | two years | two years | ||||||||||||
Compensation costs | $ 100,000 | |||||||||||||
Exercise Price | 147 | |||||||||||||
Chunghwa Precision Test Tech. Co., Ltd. (CHPT) [Member] | ||||||||||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||||||||||
Compensation costs | $ 6,000,000 | $ 16,000 | ||||||||||||
Shares issued | shares | 2,000,000 | 2,787,000 | ||||||||||||
Reserve for employee subscription | shares | 300,000 | 418,000 |
Share-based Payments Arrange177
Share-based Payments Arrangement - SENAO's Outstanding Stock Options (Detail) - Senao International Co., Ltd. (SENAO) [Member] | 12 Months Ended | ||
Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||
Number of options, Options outstanding at beginning of the year | 6,587,000 | 7,787,000 | 9,027,000 |
Number of options, Options forfeited | (661,000) | (1,200,000) | (1,240,000) |
Number of options, Options outstanding at end of the year | 5,926,000 | 6,587,000 | 7,787,000 |
Number of options, Options exercisable at end of the year | 5,926,000 | 4,947,000 | 4,049,000 |
Weighted-average exercise price, Options outstanding at beginning of the year | $ 76.10 | $ 81.40 | $ 84.30 |
Weighted-average exercise price, Options outstanding at end of the year | 70.70 | 76.10 | 81.40 |
Weighted-average exercise price, Options exercisable at end of the year | $ 70.70 | $ 76.10 | $ 81.40 |
Share-based Payments Arrange178
Share-based Payments Arrangement - SENAO's Employee Stock Options Outstanding (Detail) - Senao International Co., Ltd. (SENAO) [Member] | Dec. 31, 2017TWD ($)yr | Jul. 31, 2017TWD ($) | Jun. 30, 2017TWD ($) | Dec. 31, 2016TWD ($)yr | Jul. 31, 2016TWD ($) | Jun. 30, 2016TWD ($) | Dec. 31, 2015TWD ($) | Jul. 31, 2015TWD ($) | Dec. 31, 2014TWD ($) |
Disclosure of range of exercise prices of outstanding share options [Line Items] | |||||||||
Range of Exercise Price | $ 70.70 | $ 70.70 | $ 76.10 | $ 76.10 | $ 76.10 | $ 81.40 | $ 81.40 | $ 84.30 | |
Number of Options Outstanding | 5,926,000 | 6,587,000 | 7,787,000 | 9,027,000 | |||||
Weighted-average Remaining Contractual Life (Years) | yr | 1.35 | 2.35 | |||||||
Weighted-average Exercise Price | $ 70.70 | $ 76.10 | $ 81.40 | $ 84.30 | |||||
Options Exercisable Number of Options | 5,926,000 | 4,947,000 | 4,049,000 | ||||||
Option Exercisable Weighted-average Exercise Price | $ 70.70 | $ 76.10 | $ 81.40 |
Share-based Payments Arrange179
Share-based Payments Arrangement - Black-Scholes Model and Related Assumptions used to Evaluate Options and Fair Value of Options by SENAO (Detail) - Senao International Co., Ltd. (SENAO) [Member] | Nov. 17, 2017TWD ($)d$ / shares | May 23, 2017TWD ($)d$ / shares | May 07, 2013TWD ($)yr$ / shares |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||
Grant-date share price | $ / shares | $ 51 | $ 53.60 | $ 93 |
Exercise price | $ 49.28 | $ 49.28 | $ 93 |
Dividends yield | 0.00% | 0.00% | 0.00% |
Risk-free interest rate | 0.59% | 0.59% | 0.91% |
Expected life | 14 | 9 | 4.375 |
Expected volatility | 9.94% | 12.35% | 36.22% |
Weighted-average fair value of grants | $ 1.75 | $ 4.33 | $ 28.72 |
Share-based Payments Arrange180
Share-based Payments Arrangement - CHIEF Share-based Compensation Plan (Detail) - CHIEF Telecom Inc. (CHIEF) [Member] | 12 Months Ended | |||||
Dec. 31, 2017TWD ($) | Dec. 19, 2017TWD ($) | Dec. 31, 2016TWD ($) | Jul. 31, 2016TWD ($) | Jun. 30, 2016TWD ($) | Oct. 22, 2015TWD ($) | |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||
Exercise Price | $ 147 | $ 34.40 | $ 43 | $ 43 | ||
Grant Date 2015.10.22 [Member] | ||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||
Effective Date | 2015.10.22 | |||||
Grant Date | 2015.10.22 | |||||
Stock Options Units | 2,000 | |||||
Exercise Price | $ 34.40 | $ 34.40 | ||||
Original price | $ 43 | |||||
Grant Date 2017.12.19 [Member] | ||||||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||||||
Effective Date | 2017.12.18 | |||||
Grant Date | 2017.12.19 | |||||
Stock Options Units | 950 | |||||
Exercise Price | $ 147 |
Share-based Payments Arrange181
Share-based Payments Arrangement - CHIEF's Outstanding Stock Options (Detail) - CHIEF Telecom Inc. (CHIEF) [Member] | 12 Months Ended | ||
Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Granted on October 22, 2015 [Member] | |||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||
Number of options, Options outstanding at beginning of the year | 1,948 | 2,000 | 0 |
Number of options, Options granted | 0 | 0 | 2,000 |
Number of options, Options forfeited | (12) | (52) | |
Number of options, Options outstanding at end of the year | 1,936 | 1,948 | 2,000 |
Number of options, Option exercisable at end of the year | 968 | 0 | 0 |
Weighted-average exercise price, Options outstanding at beginning of the year | $ 34.40 | $ 43 | $ 0 |
Weighted average exercise price, Options granted | 0 | 0 | 43 |
Weighted average exercise price, Options forfeited | 0 | 0 | 0 |
Weighted-average exercise price, Options outstanding at end of the year | 34.40 | 34.40 | 43 |
Weighted-average exercise price, Options exercisable at end of the year | $ 34.40 | $ 0 | $ 0 |
Granted on December 19, 2017 [Member] | |||
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | |||
Number of options, Options granted | 950 | ||
Number of options, Options outstanding at end of the year | 950 | ||
Number of options, Option exercisable at end of the year | 0 | ||
Weighted average exercise price, Options granted | $ 147 | ||
Weighted average exercise price, Options forfeited | 0 | ||
Weighted-average exercise price, Options outstanding at end of the year | 147 | ||
Weighted-average exercise price, Options exercisable at end of the year | $ 0 |
Share-based Payments Arrange182
Share-based Payments Arrangement - CHIEF's Employee Stock Options Outstanding (Detail) - CHIEF Telecom Inc. (CHIEF) [Member] | Dec. 31, 2017TWD ($)yr | Dec. 19, 2017TWD ($) | Dec. 31, 2016TWD ($)yr | Jul. 31, 2016TWD ($) | Jun. 30, 2016TWD ($) | Dec. 31, 2015TWD ($) | Oct. 22, 2015TWD ($) | Dec. 31, 2014TWD ($) |
Disclosure of range of exercise prices of outstanding share options [Line Items] | ||||||||
Range of Exercise Price | $ 147 | $ 34.40 | $ 43 | $ 43 | ||||
Granted on October 22, 2015 [Member] | ||||||||
Disclosure of range of exercise prices of outstanding share options [Line Items] | ||||||||
Range of Exercise Price | $ 34.40 | $ 34.40 | ||||||
Number of Options Outstanding | 1,936 | 1,948 | 2,000 | 0 | ||||
Weighted-average Remaining Contractual Life (Years) | yr | 2.81 | 3.81 | ||||||
Weighted-average Exercise Price | $ 34.40 | $ 34.40 | $ 43 | $ 0 | ||||
Options Exercisable Number of Options | 968 | 0 | 0 | |||||
Option Exercisable Weighted-average Exercise Price | $ 34.40 | $ 0 | $ 0 | |||||
Granted on December 19, 2017 [Member] | ||||||||
Disclosure of range of exercise prices of outstanding share options [Line Items] | ||||||||
Range of Exercise Price | $ 147 | |||||||
Number of Options Outstanding | 950 | |||||||
Weighted-average Remaining Contractual Life (Years) | yr | 4.96 | |||||||
Weighted-average Exercise Price | $ 147 | |||||||
Options Exercisable Number of Options | 0 | |||||||
Option Exercisable Weighted-average Exercise Price | $ 0 |
Share-based Payments Arrange183
Share-based Payments Arrangement - Black-Scholes Model and Binomial Option Pricing Model and Related Assumptions used to Evaluate Options and Fair Value of Options by CHIEF (Detail) - CHIEF Telecom Inc. (CHIEF) [Member] | Dec. 19, 2017TWD ($)yr$ / shares | Oct. 22, 2015TWD ($)yr$ / shares |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||
Grant-date share price | $ / shares | $ 95.92 | $ 39.55 |
Exercise price | $ 147 | $ 43 |
Dividends yield | 0.00% | 0.00% |
Risk-free interest rate | 0.62% | 0.86% |
Expected life | yr | 5 | 5 |
Expected volatility | 17.35% | 21.02% |
Weighted average fair value of grants | $ 2,318 | $ 4,863 |
Share-based Payments Arrange184
Share-based Payments Arrangement - Black-Scholes Model and Related Assumptions used to Evaluate Options and Fair Value of Options by CHPT (Detail) - Chunghwa Precision Test Tech. Co., Ltd. (CHPT) [Member] | Sep. 18, 2017TWD ($)d$ / shares | Mar. 10, 2016TWD ($)d$ / shares |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] | ||
Grant-date share price | $ / shares | $ 1,295 | $ 302.46 |
Exercise price | $ 1,267.33 | $ 360 |
Dividends yield | 0.00% | 0.00% |
Risk-free interest rate | 0.35% | 0.37% |
Expected life | d | 4 | 12 |
Expected volatility | 28.30% | 37.43% |
Weighted average fair value of grants | $ 31.60 | $ 0.04 |
Non-Cash Transactions - Non-cas
Non-Cash Transactions - Non-cash Investing Activities (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Noncash Investing Activities [Abstract] | |||
Increase in property, plant and equipment | $ 26,069 | $ 24,591 | $ 24,451 |
Other payables | 806 | (1,074) | 633 |
Non-cash investing activities | $ 26,875 | $ 23,517 | $ 25,084 |
Operating Lease Arrangements -
Operating Lease Arrangements - Future Aggregate Minimum Lease Payments Under Non-cancellable Operating Leases (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Disclosure of finance lease and operating lease by lessee [Line Items] | ||
Minimum lease payments under non-cancellable operating leases | $ 9,493 | $ 9,221 |
Within one year [Member] | ||
Disclosure of finance lease and operating lease by lessee [Line Items] | ||
Minimum lease payments under non-cancellable operating leases | 2,918 | 2,811 |
1-5 Years [Member] | ||
Disclosure of finance lease and operating lease by lessee [Line Items] | ||
Minimum lease payments under non-cancellable operating leases | 5,796 | 5,450 |
More Than 5 Year [Member] | ||
Disclosure of finance lease and operating lease by lessee [Line Items] | ||
Minimum lease payments under non-cancellable operating leases | $ 779 | $ 960 |
Operating Lease Arrangements187
Operating Lease Arrangements - Future Aggregate Minimum Lease Collection Under Non-cancellable Operating Leases (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Disclosure of finance lease and operating lease by lessor [Line Items] | ||
Minimum lease collection under non-cancellable operating leases | $ 1,255 | $ 1,348 |
Within one year [Member] | ||
Disclosure of finance lease and operating lease by lessor [Line Items] | ||
Minimum lease collection under non-cancellable operating leases | 353 | 427 |
1-5 Years [Member] | ||
Disclosure of finance lease and operating lease by lessor [Line Items] | ||
Minimum lease collection under non-cancellable operating leases | 659 | 600 |
More Than 5 Year [Member] | ||
Disclosure of finance lease and operating lease by lessor [Line Items] | ||
Minimum lease collection under non-cancellable operating leases | $ 243 | $ 321 |
Financial Instruments - Categor
Financial Instruments - Categories of Financial Instruments (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Financial assets | ||
Held-to-maturity financial assets | $ 0 | $ 2,140 |
Loans and receivables (Note a) | 68,983 | 70,040 |
Available-for-sale financial assets | 5,751 | 4,764 |
Financial liabilities | ||
Measured at FVTPL Held for trading | 1 | 1 |
Measured at amortized cost (Note b) | 39,725 | 40,553 |
Cash flow hedges [Member] | ||
Financial liabilities | ||
Hedging derivative financial liabilities | $ 1 | $ 1 |
Financial Instruments - Assets
Financial Instruments - Assets and Liabilities related to Foreign Currency Risk (Detail) - Foreign currency risk [Member] - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
USD [Member] | ||
Disclosure of detailed information about financial instruments [Line Items] | ||
Foreign currency denominated monetary assets | $ 5,584 | $ 5,327 |
Foreign currency denominated monetary liabilities | 4,964 | 4,238 |
EUR [Member] | ||
Disclosure of detailed information about financial instruments [Line Items] | ||
Foreign currency denominated monetary assets | 28 | 14 |
Foreign currency denominated monetary liabilities | 1,323 | 968 |
Derivatives liabilities | 1 | 2 |
SGD [Member] | ||
Disclosure of detailed information about financial instruments [Line Items] | ||
Foreign currency denominated monetary assets | 63 | 106 |
Foreign currency denominated monetary liabilities | 96 | 1 |
RMB [Member] | ||
Disclosure of detailed information about financial instruments [Line Items] | ||
Foreign currency denominated monetary assets | 3 | 30 |
JPY [Member] | ||
Disclosure of detailed information about financial instruments [Line Items] | ||
Foreign currency denominated monetary assets | 36 | 13 |
Foreign currency denominated monetary liabilities | $ 12 | $ 10 |
Financial Instruments - Additio
Financial Instruments - Additional Information (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 |
Foreign currency risk [Member] | |||
Disclosure of detailed information about financial instruments [Line Items] | |||
Sensitivity rate | 5.00% | 5.00% | 5.00% |
Interest rate risk [Member] | |||
Disclosure of detailed information about financial instruments [Line Items] | |||
Sensitivity rate | 0.25% | 0.25% | 0.25% |
Increase decrease in pre-tax income due to sensitivity analysis | $ 13 | $ 12 | $ 12 |
Equity price risk [Member] | |||
Disclosure of detailed information about financial instruments [Line Items] | |||
Sensitivity rate | 5.00% | 5.00% | 5.00% |
Increase decrease in pre-tax income due to sensitivity analysis | $ 156 | $ 126 | $ 162 |
Financial Instruments - Foreign
Financial Instruments - Foreign Currency Risk Sensitivity Analysis (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 |
Profit and loss [Member] | Financial instruments [Member] | USD [Member] | |||
Disclosure of detailed information about financial instruments [Line Items] | |||
Sensitivity analysis due to a 5% increase or decrease in foreign currency exchange | $ 31 | $ 54 | $ 21 |
Profit and loss [Member] | Financial instruments [Member] | EUR [Member] | |||
Disclosure of detailed information about financial instruments [Line Items] | |||
Sensitivity analysis due to a 5% increase or decrease in foreign currency exchange | (65) | (48) | (62) |
Profit and loss [Member] | Financial instruments [Member] | SGD [Member] | |||
Disclosure of detailed information about financial instruments [Line Items] | |||
Sensitivity analysis due to a 5% increase or decrease in foreign currency exchange | (2) | 5 | 5 |
Profit and loss [Member] | Financial instruments [Member] | RMB [Member] | |||
Disclosure of detailed information about financial instruments [Line Items] | |||
Sensitivity analysis due to a 5% increase or decrease in foreign currency exchange | 0 | 1 | 2 |
Profit and loss [Member] | Financial instruments [Member] | JPY [Member] | |||
Disclosure of detailed information about financial instruments [Line Items] | |||
Sensitivity analysis due to a 5% increase or decrease in foreign currency exchange | 1 | 0 | 12 |
Profit and loss [Member] | Derivatives [Member] | USD [Member] | |||
Disclosure of detailed information about financial instruments [Line Items] | |||
Sensitivity analysis due to a 5% increase or decrease in foreign currency exchange | 6 | 3 | 1 |
Profit and loss [Member] | Derivatives [Member] | EUR [Member] | |||
Disclosure of detailed information about financial instruments [Line Items] | |||
Sensitivity analysis due to a 5% increase or decrease in foreign currency exchange | 3 | 8 | 33 |
Equity [member] | Derivatives [Member] | EUR [Member] | |||
Disclosure of detailed information about financial instruments [Line Items] | |||
Sensitivity analysis due to a 5% increase or decrease in foreign currency exchange | $ 7 | $ 5 | $ 15 |
Financial Instruments - Asse192
Financial Instruments - Assets and Liabilities related to Interest Rate Risk (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Fair value interest rate risk [Member] | ||
Disclosure of detailed information about financial instruments [Line Items] | ||
Financial assets | $ 25,911 | $ 28,303 |
Cash flow interest rate risk [Member] | ||
Disclosure of detailed information about financial instruments [Line Items] | ||
Financial assets | 6,715 | 6,582 |
Financial liabilities | $ 1,670 | $ 1,738 |
Financial Instruments - Remaini
Financial Instruments - Remaining Contractual Maturity for Non-derivative Financial Liabilities (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Non-derivative financial liabilities | $ 51,422 | $ 52,338 |
Less Than 1 Month [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Non-derivative financial liabilities | 41,934 | 43,975 |
1-3 Months [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Non-derivative financial liabilities | 0 | 38 |
3 Months to 1 Year [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Non-derivative financial liabilities | 3,217 | 2,115 |
1-5 Years [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Non-derivative financial liabilities | 6,271 | 6,210 |
Non-interest bearing [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Loans | 49,752 | 50,600 |
Non-interest bearing [Member] | Less Than 1 Month [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Loans | 41,884 | 43,975 |
Non-interest bearing [Member] | 3 Months to 1 Year [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Loans | 3,197 | 2,015 |
Non-interest bearing [Member] | 1-5 Years [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Loans | 4,671 | 4,610 |
Floating interest rate instruments [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Loans | $ 1,670 | $ 1,738 |
Floating interest rate instruments [Member] | Weighted average [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Weighted Average Effective Interest Rate | 0.97% | 1.00% |
Floating interest rate instruments [Member] | Less Than 1 Month [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Loans | $ 50 | $ 0 |
Floating interest rate instruments [Member] | 1-3 Months [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Loans | 0 | 38 |
Floating interest rate instruments [Member] | 3 Months to 1 Year [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Loans | 20 | 100 |
Floating interest rate instruments [Member] | 1-5 Years [Member] | ||
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] | ||
Loans | $ 1,600 | $ 1,600 |
Financial Instruments - Liquidi
Financial Instruments - Liquidity Analysis for Derivative Financial Instruments (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Disclosure of maturity analysis for derivative financial liabilities [Line Items] | ||
Undiscounted gross inflows (outflows) on derivatives | $ (2) | $ (2) |
Forward exchange contracts inflows [Member] | ||
Disclosure of maturity analysis for derivative financial liabilities [Line Items] | ||
Undiscounted gross inflows (outflows) on derivatives | 334 | 322 |
Forward exchange contracts outflows [Member] | ||
Disclosure of maturity analysis for derivative financial liabilities [Line Items] | ||
Undiscounted gross inflows (outflows) on derivatives | 336 | 324 |
Less Than 1 Month [Member] | ||
Disclosure of maturity analysis for derivative financial liabilities [Line Items] | ||
Undiscounted gross inflows (outflows) on derivatives | (1) | 0 |
Less Than 1 Month [Member] | Forward exchange contracts inflows [Member] | ||
Disclosure of maturity analysis for derivative financial liabilities [Line Items] | ||
Undiscounted gross inflows (outflows) on derivatives | 125 | 55 |
Less Than 1 Month [Member] | Forward exchange contracts outflows [Member] | ||
Disclosure of maturity analysis for derivative financial liabilities [Line Items] | ||
Undiscounted gross inflows (outflows) on derivatives | 126 | 55 |
1-3 Months [Member] | ||
Disclosure of maturity analysis for derivative financial liabilities [Line Items] | ||
Undiscounted gross inflows (outflows) on derivatives | (1) | (2) |
1-3 Months [Member] | Forward exchange contracts inflows [Member] | ||
Disclosure of maturity analysis for derivative financial liabilities [Line Items] | ||
Undiscounted gross inflows (outflows) on derivatives | 173 | 267 |
1-3 Months [Member] | Forward exchange contracts outflows [Member] | ||
Disclosure of maturity analysis for derivative financial liabilities [Line Items] | ||
Undiscounted gross inflows (outflows) on derivatives | 174 | 269 |
3 Months to 1 Year [Member] | Forward exchange contracts inflows [Member] | ||
Disclosure of maturity analysis for derivative financial liabilities [Line Items] | ||
Undiscounted gross inflows (outflows) on derivatives | 36 | 0 |
3 Months to 1 Year [Member] | Forward exchange contracts outflows [Member] | ||
Disclosure of maturity analysis for derivative financial liabilities [Line Items] | ||
Undiscounted gross inflows (outflows) on derivatives | $ 36 | $ 0 |
Financial Instruments - Financi
Financial Instruments - Financing Facilities (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Unsecured loans [Member] | ||
Disclosure of detailed information about financial instruments [Line Items] | ||
Unsecured bank loan facility, amount used | $ 90 | $ 118 |
Bank loan facility, amount unused | 45,749 | 46,219 |
Unsecured bank loan facility | 45,839 | 46,337 |
Secured loans [Member] | ||
Disclosure of detailed information about financial instruments [Line Items] | ||
Secured loans | 1,600 | 1,620 |
Bank loan facility, amount unused | 1,910 | 200 |
Secured bank loan facility | $ 3,510 | $ 1,820 |
Fair Value Information - Carryi
Fair Value Information - Carrying Amounts of Financial Assets and Liabilities Not Measured at Fair Value (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Disclosure of fair value measurement of assets [Line Items] | ||
Held-to-maturity financial assets | $ 0 | $ 2,140 |
Corporate bonds [Member] | ||
Disclosure of fair value measurement of assets [Line Items] | ||
Held-to-maturity financial assets | 1,990 | |
Bank debentures [Member] | ||
Disclosure of fair value measurement of assets [Line Items] | ||
Held-to-maturity financial assets | 150 | |
Not measured at fair value [Member] | ||
Disclosure of fair value measurement of assets [Line Items] | ||
Held-to-maturity financial assets | 2,140 | |
Not measured at fair value [Member] | Corporate bonds [Member] | ||
Disclosure of fair value measurement of assets [Line Items] | ||
Held-to-maturity financial assets | 1,990 | |
Not measured at fair value [Member] | Bank debentures [Member] | ||
Disclosure of fair value measurement of assets [Line Items] | ||
Held-to-maturity financial assets | 150 | |
Not measured at fair value [Member] | Level 2 [Member] | ||
Disclosure of fair value measurement of assets [Line Items] | ||
Held-to-maturity financial assets | 2,146 | |
Not measured at fair value [Member] | Level 2 [Member] | Corporate bonds [Member] | ||
Disclosure of fair value measurement of assets [Line Items] | ||
Held-to-maturity financial assets | 1,996 | |
Not measured at fair value [Member] | Level 2 [Member] | Bank debentures [Member] | ||
Disclosure of fair value measurement of assets [Line Items] | ||
Held-to-maturity financial assets | $ 150 |
Fair Value Information - Financ
Fair Value Information - Financial Instruments Measured at Fair Value on a Recurring Basis (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Disclosure of fair value measurement of assets and liabilities [Line Items] | ||
Equity investments | $ 5,751 | $ 4,764 |
Measured at FVTPL Held for trading | 1 | 1 |
Fair value on a recurring basis [Member] | ||
Disclosure of fair value measurement of assets and liabilities [Line Items] | ||
Equity investments | 3,125 | 2,521 |
Measured at FVTPL Held for trading | 1 | 1 |
Cash flow hedge-forward exchange contracts, financial liabilities | 1 | 1 |
Fair value on a recurring basis [Member] | Level 1 [Member] | ||
Disclosure of fair value measurement of assets and liabilities [Line Items] | ||
Equity investments | 3,125 | 2,521 |
Fair value on a recurring basis [Member] | Level 2 [Member] | ||
Disclosure of fair value measurement of assets and liabilities [Line Items] | ||
Measured at FVTPL Held for trading | 1 | 1 |
Cash flow hedge-forward exchange contracts, financial liabilities | $ 1 | $ 1 |
Fair Value Information - Additi
Fair Value Information - Additional Information (Detail) - TWD ($) | 12 Months Ended | |
Dec. 31, 2017 | Dec. 31, 2016 | |
Disclosure of fair value measurement of assets and liabilities [Line Items] | ||
Transfer between Level 1 and 2, assets | $ 0 | $ 0 |
Transfer between Level 2 and 1, assets | 0 | 0 |
Transfer between Level 1 and 2, liabilities | 0 | 0 |
Transfer between Level 2 and 1, liabilities | 0 | 0 |
Fair value on a recurring basis [Member] | Level 3 [Member] | ||
Disclosure of fair value measurement of assets and liabilities [Line Items] | ||
Financial assets | $ 0 | $ 0 |
Related Parties Transactions -
Related Parties Transactions - Summary of Related Parties (Detail) | 12 Months Ended |
Dec. 31, 2017 | |
Taiwan International Standard Electronics Co., Ltd. ("TISE") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
So-net Entertainment Taiwan Limited ("So-net") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
Skysoft Co., Ltd. ("SKYSOFT") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
KingwayTek Technology Co., Ltd. ("KWT") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
Dian Zuan Integrating Marketing Co., Ltd. ("DZIM") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
Taiwan International Ports Logistics Corporation ("TIPL") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
Huada Digital Corporation ("HDD") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Joint venture |
Chunghwa Benefit One Co., Ltd. ("CBO") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Joint venture |
International Integrated System, Inc. ("IISI") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
Senao Networks, Inc. ("SNI") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
HopeTech Technologies Limited ("HopeTech") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
EnGenius Tech. Co., Ltd. [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
ST-2 Satellite Ventures Pte., Ltd. ("STS") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
Viettel-CHT Co., Ltd. ("Viettel-CHT") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
Click Force Co., Ltd. ("CF") [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Associate |
Chunghwa Telecom Foundation [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | A nonprofit organization of which the funds donated by Chunghwa exceeds one third of its total funds |
Senao Technical and Cultural Foundation [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | A nonprofit organization of which the funds donated by SENAO exceeds one third of its total funds |
Sochamp Technology Co., Ltd. [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Investor of significant influence over CHST |
E-Life Mall Co., Ltd. [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | One of the directors of E-Life Mall and a director of SENAO are members of an immediate family |
Engenius Technologies Co., Ltd. [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Chairman of Engenius Technologies Co., Ltd. is a member of SENAO’s management |
United Daily News Co., Ltd. [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Investor of significant influence over SFD |
Shenzhen Century Communication Co., Ltd. [Member] | |
Disclosure of transactions between related parties [Line Items] | |
Relationship | Investor of significant influence over SCT |
Related Parties Transactions200
Related Parties Transactions - Details of Transactions Between the Company and Other Related Parties (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Dec. 31, 2017USD ($) | |
Disclosure of transactions between related parties [Line Items] | ||||
Revenues | $ 410 | $ 348 | $ 423 | |
Operating Costs and Expenses | 1,270 | 1,496 | 1,530 | |
Non-operating Income and Expenses | 32 | 37 | 36 | |
Receivables | 49 | 14 | $ 2 | |
Payables | 684 | 762 | $ 23 | |
Customers' deposits | 6 | 11 | ||
Acquisition of property, plant and equipment | 390 | 320 | 325 | |
Prepaid rents - current | 204 | 204 | ||
Prepaid rents - noncurrent | 1,551 | 1,755 | ||
Prepaid rents | 1,755 | 1,959 | ||
Associates [Member] | ||||
Disclosure of transactions between related parties [Line Items] | ||||
Revenues | 344 | 292 | 333 | |
Operating Costs and Expenses | 1,197 | 1,405 | 1,451 | |
Non-operating Income and Expenses | 32 | 37 | 36 | |
Receivables | 43 | 9 | ||
Payables | 680 | 757 | ||
Customers' deposits | 6 | 10 | ||
Acquisition of property, plant and equipment | 390 | 313 | 314 | |
Joint ventures [Member] | ||||
Disclosure of transactions between related parties [Line Items] | ||||
Revenues | 1 | 7 | 9 | |
Operating Costs and Expenses | 2 | 17 | 17 | |
Receivables | 0 | 0 | ||
Payables | 0 | 1 | ||
Customers' deposits | 0 | 1 | ||
Acquisition of property, plant and equipment | 0 | 7 | 11 | |
Others [Member] | ||||
Disclosure of transactions between related parties [Line Items] | ||||
Revenues | 65 | 49 | 81 | |
Operating Costs and Expenses | 71 | 74 | 62 | |
Non-operating Income and Expenses | 0 | 0 | $ 0 | |
Receivables | 6 | 5 | ||
Payables | $ 4 | $ 4 |
Related Parties Transactions201
Related Parties Transactions - Additional Information (Detail) $ in Millions, $ in Millions | 1 Months Ended | 12 Months Ended | |||
Aug. 31, 2011TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | Aug. 31, 2011SGD ($) | |
Disclosure of transactions between related parties [Line Items] | |||||
Lease contract value, prepayment amount | $ 1,755 | $ 1,959 | |||
ST-2 Satellite Ventures Pte., Ltd. ("STS") [Member] | |||||
Disclosure of transactions between related parties [Line Items] | |||||
Lease period | 15 years | ||||
Lease contract value | $ 6,000 | $ 261 | |||
Lease contract value, prepayment amount | $ 3,068 | ||||
Rental expense | 392 | 394 | $ 404 | ||
Rental expense, offsetting credit of the prepayment | 204 | 204 | 204 | ||
Rental expense, additional accrual | $ 188 | $ 190 | $ 200 |
Related Parties Transactions202
Related Parties Transactions - Compensation of Directors and Other Key Management Personnel (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | |
Disclosure Of Transactions Between Related Parties [Abstract] | |||
Short-term employee benefits | $ 254 | $ 251 | $ 212 |
Post-employment benefits | 9 | 8 | 9 |
Share-based payment | 2 | 2 | 3 |
Compensation of key management personnel | $ 265 | $ 261 | $ 224 |
Pledged Assets - Assets Pledged
Pledged Assets - Assets Pledged as Collaterals (Detail) - TWD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 |
Subclassifications Of Assets Liabilities And Equities [Abstract] | ||
Property, plant and equipment | $ 2,550 | $ 2,580 |
Land held under development (included in inventories) | 1,999 | 1,999 |
Restricted assets (included in other assets - others) | 3 | 21 |
Assets pledged as collateral | $ 4,552 | $ 4,600 |
Significant Contingent Liabi204
Significant Contingent Liabilities and Unrecognized Commitments - Additional Information (Detail) - TWD ($) $ in Millions | Mar. 31, 2018 | Dec. 31, 2017 | Aug. 15, 1996 |
Commitments And Contingencies [Line Items] | |||
Unused letters of credit | $ 50 | ||
Commitment amount | 1,614 | ||
Contractual Consideration Payment [Member] | |||
Commitments And Contingencies [Line Items] | |||
Contractual consideration payment | $ 98 | ||
Piping Fund [Member] | |||
Commitments And Contingencies [Line Items] | |||
Commitment amount | $ 2,000 | ||
Commitment to contribute to a Piping Fund, amount contributed | $ 1,000 | ||
Commitment to contribute to a Piping Fund, remaining amount | 1,000 | ||
Land and buildings [Member] | |||
Commitments And Contingencies [Line Items] | |||
Commitments for acquisitions of property, plant and equipment | 118 | ||
Telecommunications equipment [Member] | |||
Commitments And Contingencies [Line Items] | |||
Commitments for acquisitions of property, plant and equipment | $ 16,199 |
Segment Information - Analysis
Segment Information - Analysis by Reportable Segment of Revenue and Operating Results of Continuing Operations (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of operating segments [Line Items] | ||||
Revenues | $ 227,514 | $ 7,676 | $ 229,991 | $ 231,795 |
Income before income tax | 48,009 | $ 1,620 | 49,413 | 51,953 |
From External Customers [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 227,514 | 229,991 | 231,795 | |
Intersegment [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 35,730 | 36,735 | 34,911 | |
Segment [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 263,244 | 266,726 | 266,706 | |
Intersegment Elimination [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | (35,730) | (36,735) | (34,911) | |
Consolidated [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 227,514 | 229,991 | 231,795 | |
Domestic Fixed Communications Business [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Income before income tax | 24,888 | 25,658 | 23,231 | |
Domestic Fixed Communications Business [Member] | From External Customers [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 71,137 | 72,784 | 72,535 | |
Domestic Fixed Communications Business [Member] | Intersegment [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 22,515 | 22,669 | 21,401 | |
Domestic Fixed Communications Business [Member] | Segment [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 93,652 | 95,453 | 93,936 | |
Mobile Communications Business [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Income before income tax | 12,433 | 13,926 | 19,394 | |
Mobile Communications Business [Member] | From External Customers [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 109,376 | 110,801 | 114,877 | |
Mobile Communications Business [Member] | Intersegment [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 2,031 | 2,530 | 3,475 | |
Mobile Communications Business [Member] | Segment [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 111,407 | 113,331 | 118,352 | |
Internet Business [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Income before income tax | 11,118 | 10,729 | 9,918 | |
Internet Business [Member] | From External Customers [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 28,917 | 28,100 | 25,777 | |
Internet Business [Member] | Intersegment [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 4,209 | 4,734 | 4,701 | |
Internet Business [Member] | Segment [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 33,126 | 32,834 | 30,478 | |
International Fixed Communications Business [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Income before income tax | 1,029 | 1,098 | 1,120 | |
International Fixed Communications Business [Member] | From External Customers [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 13,552 | 14,434 | 15,460 | |
International Fixed Communications Business [Member] | Intersegment [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 2,375 | 2,680 | 2,120 | |
International Fixed Communications Business [Member] | Segment [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 15,927 | 17,114 | 17,580 | |
Other [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Income before income tax | (1,459) | (1,998) | (1,710) | |
Other [Member] | From External Customers [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 4,532 | 3,872 | 3,146 | |
Other [Member] | Intersegment [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | 4,600 | 4,122 | 3,214 | |
Other [Member] | Segment [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Revenues | $ 9,132 | $ 7,994 | $ 6,360 |
Segment Information - Other Seg
Segment Information - Other Segment Information (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of operating segments [Line Items] | ||||
Share of the profits of associates and joint ventures accounted for using equity method | $ 419 | $ 14 | $ 515 | $ 897 |
Interest income | 205 | 7 | 189 | 306 |
Interest expenses | 22 | 1 | 20 | 33 |
Operating costs and expenses | 180,706 | 181,390 | 181,329 | |
Depreciation and amortization | 31,930 | 32,485 | 33,448 | |
Capital expenditure | 26,875 | 907 | 23,517 | 25,084 |
Impairment loss on property, plant and equipment | 0 | 0 | 596 | 138 |
Reversal of impairment loss | 11 | $ 0 | 148 | 142 |
Domestic Fixed Communications Business [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Interest income | 21 | 15 | 19 | |
Operating costs and expenses | 62,795 | 64,230 | 64,960 | |
Depreciation and amortization | 15,614 | 16,414 | 17,487 | |
Capital expenditure | 11,647 | 9,846 | 10,196 | |
Impairment loss on property, plant and equipment | 0 | 0 | 22 | |
Reversal of impairment loss | 11 | 148 | 142 | |
Mobile Communications Business [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Interest income | 15 | 11 | 19 | |
Interest expenses | 6 | 2 | 10 | |
Operating costs and expenses | 80,275 | 79,593 | 81,213 | |
Depreciation and amortization | 11,001 | 10,620 | 10,444 | |
Capital expenditure | 9,742 | 8,981 | 8,596 | |
Impairment loss on property, plant and equipment | 0 | 596 | 116 | |
Internet Business [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Interest income | 9 | 7 | 11 | |
Operating costs and expenses | 13,288 | 13,160 | 12,062 | |
Depreciation and amortization | 3,385 | 3,626 | 3,611 | |
Capital expenditure | 2,779 | 2,718 | 4,795 | |
International Fixed Communications Business [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Interest income | 15 | 6 | 2 | |
Operating costs and expenses | 13,385 | 14,313 | 14,411 | |
Depreciation and amortization | 1,477 | 1,451 | 1,536 | |
Capital expenditure | 1,580 | 1,136 | 968 | |
Other [Member] | ||||
Disclosure of operating segments [Line Items] | ||||
Share of the profits of associates and joint ventures accounted for using equity method | 419 | 515 | 897 | |
Interest income | 145 | 150 | 255 | |
Interest expenses | 16 | 18 | 23 | |
Operating costs and expenses | 10,963 | 10,094 | 8,683 | |
Depreciation and amortization | 453 | 374 | 370 | |
Capital expenditure | $ 1,127 | $ 836 | $ 529 |
Segment Information - Main Prod
Segment Information - Main Products and Service Revenues (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of products and services [Line Items] | ||||
Revenues | $ 227,514 | $ 7,676 | $ 229,991 | $ 231,795 |
Mobile services [Member] | ||||
Disclosure of products and services [Line Items] | ||||
Revenues | 75,823 | 78,788 | 80,867 | |
Local telephone and domestic long distance telephone services [Member] | ||||
Disclosure of products and services [Line Items] | ||||
Revenues | 32,247 | 34,531 | 36,690 | |
Sales of product [Member] | ||||
Disclosure of products and services [Line Items] | ||||
Revenues | 37,649 | 35,377 | 36,509 | |
Broadband access and domestic leased line services [Member] | ||||
Disclosure of products and services [Line Items] | ||||
Revenues | 22,950 | 23,315 | 23,711 | |
Data communications internet services [Member] | ||||
Disclosure of products and services [Line Items] | ||||
Revenues | 21,143 | 20,906 | 17,455 | |
International network and leased telephone services [Member] | ||||
Disclosure of products and services [Line Items] | ||||
Revenues | 9,328 | 10,634 | 11,319 | |
Others [Member] | ||||
Disclosure of products and services [Line Items] | ||||
Revenues | $ 28,374 | $ 26,440 | $ 25,244 |
Segment Information - Geographi
Segment Information - Geographic Information (Detail) $ in Millions, $ in Millions | 12 Months Ended | |||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | Dec. 31, 2015TWD ($) | |
Disclosure of geographical areas [Line Items] | ||||
Revenues | $ 227,514 | $ 7,676 | $ 229,991 | $ 231,795 |
Taiwan, ROC [Member] | ||||
Disclosure of geographical areas [Line Items] | ||||
Revenues | 217,568 | 218,933 | 220,917 | |
Overseas [Member] | ||||
Disclosure of geographical areas [Line Items] | ||||
Revenues | $ 9,946 | $ 11,058 | $ 10,878 |
Segment Information - Additiona
Segment Information - Additional Information (Detail) $ in Millions, $ in Millions | 12 Months Ended | ||
Dec. 31, 2017TWD ($) | Dec. 31, 2017USD ($) | Dec. 31, 2016TWD ($) | |
Disclosure of operating segments [Line Items] | |||
Long-lived assets | $ 371,568 | $ 12,536 | $ 365,295 |
Information about major customers | Company did not have any single customer whose revenue exceeded 10% of the total revenues | ||
Overseas [Member] | |||
Disclosure of operating segments [Line Items] | |||
Long-lived assets | $ 4,445 | $ 3,947 |