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Segment Information - Summary of Segment Information (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of operating segments [line items] |  |  |
Revenue | ₩ 725,516 | ₩ 463,618 | ₩ 413,938
Segment operating profit | 160,367 | 104,708 | 96,719
Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Segment revenue | 815,372 | 533,428 | 460,468
Revenue | 725,516 | 463,618 | 413,938
Depreciation/Amortization | 7,658 | 7,062 | 6,318
Segment operating profit | 160,367 | 104,708 | 96,719
Operating Segments | Online |  |  |
Disclosure of operating segments [line items] |  |  |
Segment revenue | 96,487 | 107,326 | 90,123
Revenue | 81,017 | 89,257 | 75,370
Depreciation/Amortization | 1,436 | 1,349 | 1,975
Segment operating profit | 44,107 | 45,832 | 31,271
Operating Segments | Mobile |  |  |
Disclosure of operating segments [line items] |  |  |
Segment revenue | 697,736 | 404,362 | 346,928
Revenue | 629,604 | 358,771 | 320,164
Depreciation/Amortization | 2,158 | 1,873 | 1,875
Segment operating profit | 122,107 | 58,357 | 64,837
Operating Segments | Others |  |  |
Disclosure of operating segments [line items] |  |  |
Segment revenue | 21,149 | 21,740 | 23,417
Revenue | 14,895 | 15,590 | 18,404
Depreciation/Amortization | 4,064 | 3,840 | 2,468
Segment operating profit | (5,847) | 519 | 611
Inter- Segment Eliminations |  |  |
Disclosure of operating segments [line items] |  |  |
Revenue | (89,856) | (69,810) | (46,530)
Inter- Segment Eliminations | Online |  |  |
Disclosure of operating segments [line items] |  |  |
Revenue | (15,470) | (18,069) | (14,753)
Inter- Segment Eliminations | Mobile |  |  |
Disclosure of operating segments [line items] |  |  |
Revenue | (68,132) | (45,591) | (26,764)
Inter- Segment Eliminations | Others |  |  |
Disclosure of operating segments [line items] |  |  |
Revenue | ₩ (6,254) | ₩ (6,150) | ₩ (5,013)

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