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Non-Financial Assets - Summary of Non-Financial Assets (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Other Current Assets |  |
Non-Financial Assets [Line Items] |  |
Advance payment | ₩ 160,596 | ₩ 161,466
Prepaid Expenses | 366,532 | 756,729
Miscellaneous Non-Financial Assets |  |
Greenhouse gas emissions rights | 192,005 | 524,658
Other quick assets | 1,025,736 | 316,138
Miscellaneous Non-Financial Assets | 1,217,741 | 840,796
Non-Financial Assets | 1,744,869 | 1,758,991
Other Noncurrent Assets |  |
Non-Financial Assets [Line Items] |  |
Advance payment | 51,425 | 124,305
Prepaid Expenses | 153,830 | 151,095
Miscellaneous Non-Financial Assets |  |
Greenhouse gas emissions rights | 0 | 0
Other quick assets | 103,879 | 89,418
Miscellaneous Non-Financial Assets | 103,879 | 89,418
Non-Financial Assets | ₩ 309,134 | ₩ 364,818

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