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Cash and Cash Equivalents (Tables) | 12 Months Ended
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Dec. 31, 2021
Cash and cash equivalents [abstract] |
Disclosure of Details of Cash and Cash Equivalents | Cash and cash equivalents as of December 31, 2021 and 2020 consist of the follows:
| December 31, 2021 |  | December 31, 2020
| (In millions of Korean won)
Deposits in banks | 99,105 |  |  | 95,573 |
Money market instruments | — |  |  | 15,059 |
Total | ₩ | 99,105 |  |  | ₩ | 110,632 |

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