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Earnings per Share (Tables) | 12 Months Ended
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Dec. 31, 2018
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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, 2016, 2017 and 2018, is calculated as follows:
|  | 2016 |  |  | 2017 |  |  | 2018 |
Profit attributable to ordinary shares (In millions of Korean won) |  | ￦ | 745,090 |  |  | ￦ | 461,559 |  |  | ￦ | 645,571 |
Weighted average number of ordinary shares outstanding (In number of shares) |  |  | 244,892,313 |  |  |  | 245,017,175 |  |  |  | 245,049,466 |
Basic earnings per share (In Korean won) |  |  | 3,043 |  |  |  | 1,884 |  |  |  | 2,634 |
Diluted earnings per share from operations for the years ended December 31, 2016, 2017 and 2018 is calculated as follows:
|  | 2016 |  |  | 2017 |  |  | 2018 |
Profit attributable to ordinary shares (In millions of Korean won) |  | ￦ | 745,090 |  |  | ￦ | 461,559 |  |  | ￦ | 645,571 |
Adjusted net income attributable to ordinary shares (In millions of Korean won) |  |  | (67 | ) |  |  | — |  |  |  | — |
Diluted profit attributable to ordinary shares (In millions of Korean won) |  |  | 745,023 |  |  |  | 461,559 |  |  |  | 645,571 |
Number of dilutive potential ordinary shares outstanding (In number of shares) |  |  | 84,245 |  |  |  | 79,880 |  |  |  | 1,163 |
Weighted average number of ordinary shares outstanding (In number of shares) |  |  | 244,976,558 |  |  |  | 245,097,055 |  |  |  | 245,050,629 |
Diluted earnings per share (In Korean won) |  |  | 3,041 |  |  |  | 1,883 |  |  |  | 2,634 |

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