XML 88 R74.htm IDEA: XBRL DOCUMENT
v3.8.0.1

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 | )

X
- Definition The disclosure in detail of other income. + References No definition available. + Details
Name: | cht_DisclosureInDetailOfOtherIncomeExplanatory
Namespace Prefix: | cht_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of employee benefit expenses. + References No definition available. + Details
Name: | cht_DisclosureOfEmployeeBenefitExpensesExplanatory
Namespace Prefix: | cht_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of other gains and losses. + References No definition available. + Details
Name: | cht_DisclosureOfOtherGainsAndLossesTextBlock
Namespace Prefix: | cht_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Text Block [Abstract] + References No definition available. + Details
Name: | cht_TextBlock1Abstract
Namespace Prefix: | cht_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure of the analysis of other comprehensive income by item. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2016-01-13 -Paragraph 106A -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_106A&doctype=Standard -URIDate 2016-03-31 + Details
Name: | ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of depreciation and amortisation expense. [Refer: Depreciation and amortisation expense] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2016-01-13 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_10_e&doctype=Standard -URIDate 2016-03-31 + Details
Name: | ifrs-full_DisclosureOfDepreciationAndAmortisationExpenseExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of impairment loss and the reversal of impairment loss. [Refer: Impairment loss; Reversal of impairment loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2016-01-13 -Paragraph 126 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2016-03-30&anchor=para_126&doctype=Standard -URIDate 2016-03-31 + Details
Name: | ifrs-full_DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of other operating income or expense. [Refer: Other operating income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2016-01-13 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_10_e&doctype=Standard -URIDate 2016-03-31 + Details
Name: | ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration