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Non-Financial Assets - Summary of Non-Financial Assets (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Current non-financial assets [Abstract] |  |
Advance payments | ₩ 300,350 | ₩ 160,596
Prepaid expenses | 440,079 | 366,532
Greenhouse gas emissions rights | 25,246 | 192,005
Other quick assets | 343,646 | 1,025,736
Others | 368,892 | 1,217,741
Current non-financial assets | 1,109,321 | 1,744,869
Non-current non-financial assets [Abstract] |  |
Advance payments | 75,489 | 51,425
Prepaid expenses | 214,022 | 153,830
Greenhouse gas emissions rights | 0 | 0
Other quick assets | 60,659 | 103,879
Others | 60,659 | 103,879
Non-current non-financial assets | ₩ 350,170 | ₩ 309,134

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