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Non-Financial Assets - Summary of Non-Financial Assets (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Current non-financial assets [Abstract] |  |
Advance payments | ₩ 467,156 | ₩ 300,350
Prepaid expenses | 431,087 | 440,079
Greenhouse gas emissions rights | 211,969 | 25,246
Other quick assets | 157,702 | 343,646
Others | 369,671 | 368,892
Current non-financial assets | 1,267,914 | 1,109,321
Non-current non-financial assets [Abstract] |  |
Advance payments | 66,174 | 75,489
Prepaid expenses | 221,922 | 214,022
Greenhouse gas emissions rights | 0 | 0
Other quick assets | 40,108 | 60,659
Others | 40,108 | 60,659
Non-current non-financial assets | ₩ 328,204 | ₩ 350,170

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