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Earnings Per Share | 12 Months Ended
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Dec. 31, 2020
Earnings per share [Abstract] |
Earnings per share |
44. | Earnings (Loss) Per Share
(1) | Basic earnings (loss) per share for the years ended December 31, 2018, 2019 and 2020 are as follows:
Type |  |  |  |  | 2018 |  |  | 2019 |  |  | 2020 |
|  |  |  |  | In won |
Basic earnings (loss) per share |  | ￦ |  |  |  |  | (2,048 | ) |  |  | (3,654 | ) |  |  | 3,102 |
(2) | Diluted earnings (loss) per share for the years ended December 31, 2018, 2019 and 2020 are as follows:
Type |  |  |  |  | 2018 |  |  | 2019 |  |  | 2020 |
|  |  |  |  | In won |
Diluted earnings (loss) per share |  | ￦ |  |  |  |  | (2,048 | ) |  |  | (3,654 | ) |  |  | 3,102 |
(3) | Basic earnings (loss) per share
Profit (loss) for the year and weighted average number of common shares used in the calculation of basic earnings (loss) per share for the years ended December 31, 2018, 2019 and 2020 are as follows:
Type |  |  |  |  | 2018 |  |  | 2019 |  |  | 2020 |
|  |  |  |  | In millions of won except number of shares |
Profit (loss) attributable to owners of the controlling company |  | ￦ |  |  |  |  | (1,314,567 | ) |  |  | (2,345,517 | ) |  |  | 1,991,347 |
Profit (loss) used in the calculation of total basic earnings (loss) per share |  |  |  |  |  |  | (1,314,567 | ) |  |  | (2,345,517 | ) |  |  | 1,991,347 |
Weighted average number of common shares |  |  |  |  |  |  | 641,964,077 |  |  |  | 641,964,077 |  |  |  | 641,964,077 |
(4) | Diluted earnings (loss) per share
Diluted earnings (loss) per share is calculated by applying adjusted weighted average number of common shares under the assumption that all dilutive potential common shares are converted to common shares. Earnings (loss) used in the calculation of total diluted earnings (loss) per share for the years ended December 31, 2018, 2019 and 2020 are as follows:
Type |  |  |  |  | 2018 |  |  | 2019 |  |  | 2020 |
|  |  |  |  | In millions of won |
Profit (loss) used in the calculation of total diluted earnings (loss) per share |  | ￦ |  |  |  |  | (1,314,567 | ) |  |  | (2,345,517 | ) |  |  | 1,991,347 |
Weighted average number of common shares used in calculating diluted earnings (loss) per share are adjusted from weighted average number of common shares used in calculating basic earnings (loss) per share. Detailed information of the adjustment for the years ended December 31, 2018, 2019 and 2020 are as follows:
Type |  | 2018 |  |  | 2019 |  |  | 2020 |
|  | 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 |
(5) | There are no potential dilutive instruments, thus diluted earnings (loss) per share are same as basic earnings (loss) per share for the years ended December 31, 2018, 2019 and 2020.

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