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Earnings per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
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Summary of Basic and Diluted Earnings per Share From Operations | Basic earnings per share from operations for the years ended December 31, 2015, 2016 and 2017, is calculated as follows:
|  | 2015 |  |  | 2016 |  |  | 2017 |
Profit attributable to ordinary shares (In millions of Korean won) |  | ￦ | 546,361 |  |  | ￦ | 708,362 |  |  | ￦ | 461,559 |
Profit from continuing operations attributable to ordinary shares |  |  | 404,045 |  |  |  | 708,362 |  |  |  | 461,559 |
Profit from discontinued operations attributable to ordinary shares |  |  | 142,316 |  |  |  | — |  |  |  | — |
Weighted average number of ordinary shares outstanding (In number of shares) |  |  | 244,854,364 |  |  |  | 244,892,313 |  |  |  | 245,017,175 |
Basic earnings per share (In Korean won) |  |  | 2,231 |  |  |  | 2,893 |  |  |  | 1,884 |
Basic earnings per share from continuing operations |  |  | 1,650 |  |  |  | 2,893 |  |  |  | 1,884 |
Basic earnings per share from discontinued operations |  |  | 581 |  |  |  | — |  |  |  | — |
Diluted earnings per share from operations for the years ended December 31, 2015, 2016 and 2017 is calculated as follows:
|  | 2015 |  |  | 2016 |  |  | 2017 |
Profit attributable to ordinary shares (In millions of Korean won) |  | ￦ | 546,361 |  |  | ￦ | 708,362 |  |  | ￦ | 461,559 |
Adjusted net income attributable to ordinary shares (In millions of Korean won) |  |  | (75 | ) |  |  | (67 | ) |  |  | — |
Diluted profit attributable to ordinary shares (In millions of Korean won) |  |  | 546,286 |  |  |  | 708,295 |  |  |  | 461,559 |
Diluted profit from continuing operations attributable to ordinary shares |  |  | 403,970 |  |  |  | 708,295 |  |  |  | 461,559 |
Diluted income from discontinued operations attributable to ordinary shares |  |  | 142,316 |  |  |  | — |  |  |  | — |
Number of dilutive potential ordinary shares outstanding (In number of shares) |  |  | 1,104 |  |  |  | 84,245 |  |  |  | 79,880 |
Weighted average number of ordinary shares outstanding (In number of shares) |  |  | 244,855,468 |  |  |  | 244,976,558 |  |  |  | 245,097,055 |
Diluted earnings per share (In Korean won) |  |  | 2,231 |  |  |  | 2,891 |  |  |  | 1,883 |
Diluted earnings per share from continuing operations |  |  | 1,650 |  |  |  | 2,891 |  |  |  | 1,883 |
Diluted earnings per share from discontinued operations |  |  | 581 |  |  |  | — |  |  |  | — |

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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 2017-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=33&date=2017-03-01&anchor=para_66&doctype=Standard -URIDate 2017-03-09 + Details
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