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Financial Risk Management - Schedule of Company's Debt to Equity Ratio (Details) - KRW (₩) ₩ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of detailed information about financial instruments [abstract] |  |  |  |
Total liabilities | ₩ 80,685 | ₩ 88,024 |  |
Total equity | ₩ 246,841 | ₩ 177,348 | ₩ 115,766 | ₩ 75,552
Debt ratio | 33.00% | 50.00% |  |

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