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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2018
Text block [abstract] |
Computation of Earnings Per Share |
|  | Years Ended December 31 |
|  | 2016 |  |  | 2017 |  |  | 2018 |
|  | (NT$) |  |  | (NT$) |  |  | (NT$) |
Basic EPS |  | $ | 12.79 |  |  | $ | 13.30 |  |  | $ | 14.00 |
Diluted EPS |  | $ | 12.79 |  |  | $ | 13.30 |  |  | $ | 14.00 |
EPS is computed as follows:
|  | Amounts (Numerator) NT$ (In Millions) |  |  | Number of Shares (Denominator) (In Millions) |  |  | EPS (NT$) |
Year Ended December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |
Basic/Diluted EPS |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders of the parent |  | $ | 331,713.7 |  |  |  | 25,930.3 |  |  | $ | 12.79 |
Year Ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |
Basic/Diluted EPS |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders of the parent |  | $ | 344,998.3 |  |  |  | 25,930.3 |  |  | $ | 13.30 |
Year Ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |
Basic/Diluted EPS |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders of the parent |  | $ | 363,052.7 |  |  |  | 25,930.3 |  |  | $ | 14.00 |

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- Definition The disclosure of earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2018-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=33&date=2018-03-01&anchor=para_66&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Text block [abstract] + References No definition available. + Details
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