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Intangible Assets - Summary of Intangible Assets (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets | ₩ 3,342 | ₩ 3,363 | ₩ 1,717 | ₩ 1,163
Software |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets | 1,264 | 2,234 | 1,144 | 991
Industrial property rights |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets | 483 | 332 | ₩ 186 | ₩ 72
Other intangible assets |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets | 1,595 | 797 |  |
Acquisition price |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets | 21,838 | 19,708 |  |
Acquisition price | Software |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets | 14,491 | 14,303 |  |
Acquisition price | Industrial property rights |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets | 1,083 | 859 |  |
Acquisition price | Other intangible assets |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets | 6,264 | 4,546 |  |
Accumulated Amortization |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets | (18,496) | (16,345) |  |
Accumulated Amortization | Software |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets | (13,227) | (12,069) |  |
Accumulated Amortization | Industrial property rights |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets | (600) | (527) |  |
Accumulated Amortization | Other intangible assets |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible assets | ₩ (4,669) | ₩ (3,749) |  |

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