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Earnings per share (Tables) | 12 Months Ended
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Dec. 31, 2018
Earnings per share [Abstract] |
Basic earnings per share |
Basic earnings (loss) per share for the years ended December 31, 2016, 2017 and 2018 are as follows:
Type |  |  |  |  | 2016 |  |  | 2017 |  |  | 2018 |
|  |  |  |  | In won |
Basic earnings (loss) per share |  | ￦ |  |  |  |  | 10,980 |  |  |  | 2,023 |  |  |  | (2,048 | )
Diluted earnings per share |
Diluted earnings (loss) per share for the years ended December 31, 2016, 2017 and 2018 are as follows:
Type |  |  |  |  | 2016 |  |  | 2017 |  |  | 2018 |
|  |  |  |  | In won |
Diluted earnings (loss) per share |  | ￦ |  |  |  |  | 10,980 |  |  |  | 2,023 |  |  |  | (2,048 | )
Calculation of Basic earnings per share | Net profit (loss) for the period and weighted average number of common shares used in the calculation of basic earnings (loss) per share for the years ended December 31, 2016, 2017 and 2018 are as follows:
Type |  |  |  |  | 2016 |  |  | 2017 |  |  | 2018 |
|  |  |  |  | In millions of won except number of shares |
Net profit (loss) attributable to controlling interest |  | ￦ |  |  |  |  | 7,048,581 |  |  |  | 1,298,720 |  |  |  | (1,314,567 | )
Profit (loss) used in the calculation of total basic earnings (loss) per share |  |  |  |  |  |  | 7,048,581 |  |  |  | 1,298,720 |  |  |  | (1,314,567 | )
Weighted average number of common shares |  |  |  |  |  |  | 641,964,077 |  |  |  | 641,964,077 |  |  |  | 641,964,077 |
Calculation of Diluted earnings per share | Earnings (loss) used in the calculation of total diluted earnings per share for the years ended December 31, 2016, 2017 and 2018 are as follows:
Type |  |  |  |  | 2016 |  |  | 2017 |  |  | 2018 |
|  |  |  |  | In millions of won |
Profit (loss) used in the calculation of total diluted earnings (loss) per share |  | ￦ |  |  |  |  | 7,048,581 |  |  |  | 1,298,720 |  |  |  | (1,314,567 | )
Weighted average common shares used in calculating diluted earnings (loss) per share are adjusted from weighted average common shares used in calculating basic earnings (loss) per share. Detailed information of the adjustment for the years ended December 31, 2016, 2017 and 2018 are as follows:
Type |  | 2016 |  |  | 2017 |  |  | 2018 |
|  | In number of shares |
Weighted average number of common shares |  |  | 641,964,077 |  |  |  | 641,964,077 |  |  |  | 641,964,077 |
Diluted weighted average number of shares |  |  | 641,964,077 |  |  |  | 641,964,077 |  |  |  | 641,964,077 |

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