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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, 2024 | Dec. 31, 2023
Financial Assets At Fair Value Through Profit Or Loss [Line Items] |  |
Gains (losses) on financial assets at fair value through profit or loss | ₩ 173,417 | ₩ 211,131
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 | 34,481 | (59)
Financial assets at fair value through profit or loss | Cooperative |  |
Financial Assets At Fair Value Through Profit Or Loss [Line Items] |  |
Gains (losses) on financial assets at fair value through profit or loss | 118 | 272
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 | 2,435 | 2,934
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 | ₩ 136,383 | ₩ 207,984

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