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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
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