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Financial Assets at Fair Value Through Profit or Loss - Summary of Income (Loss) from Financial Assets at fair Value Through Profit or Loss (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Financial Assets At Fair Value Through Profit Or Loss [Line Items] |  |
Gains (losses) on financial assets at fair value through profit or loss | ₩ 32,661 | ₩ 34,444
Financial assets at fair value through profit or loss | Beneficiary Certificate |  |
Financial Assets At Fair Value Through Profit Or Loss [Line Items] |  |
Gains (losses) on financial assets at fair value through profit or loss | 4,527 | 13,632
Financial assets at fair value through profit or loss | Cooperative securities |  |
Financial Assets At Fair Value Through Profit Or Loss [Line Items] |  |
Gains (losses) on financial assets at fair value through profit or loss | 120 | 110
Financial assets at fair value through profit or loss | Debt with embedded derivatives |  |
Financial Assets At Fair Value Through Profit Or Loss [Line Items] |  |
Gains (losses) on financial assets at fair value through profit or loss | 946 | 854
Financial assets at fair value through profit or loss | Others |  |
Financial Assets At Fair Value Through Profit Or Loss [Line Items] |  |
Gains (losses) on financial assets at fair value through profit or loss | ₩ 27,068 | ₩ 19,848

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