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Inventories (Tables) | 12 Months Ended
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Dec. 31, 2018
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Summary of Inventories Net | Inventories as at December 31, 2017 and 2018, are as follows:
|  | December 31, 2017 |  |  | December 31, 2018 |
(In millions of Korean won) |  | Acquisition cost |  |  | Valuation allowance |  |  | Book amount |  |  | Acquisition cost |  |  | Valuation allowance |  |  | Book amount |
Merchandise |  | ￦ | 504,321 |  |  | ￦ | (58,293 | ) |  | ￦ | 446,028 |  |  | ￦ | 794,020 |  |  | ￦ | (113,581 | ) |  | ￦ | 680,439 |
Others |  |  | 195,999 |  |  |  | — |  |  |  | 195,999 |  |  |  | 394,195 |  |  |  | — |  |  |  | 394,195 |
Total |  | ￦ | 700,320 |  |  | ￦ | (58,293 | ) |  | ￦ | 642,027 |  |  | ￦ | 1,188,215 |  |  | ￦ | (113,581 | ) |  | ￦ | 1,074,634 |

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