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Cash and due from banks at amortized cost - Summary of early redemptions of deposits measured at amortized cost (Details) - KRW (₩) ₩ in Millions | 12 Months Ended |
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Dec. 31, 2025 | Dec. 31, 2026
Cash and due from banks at amortized cost Early redemptions of deposits measured at amortized cost [Abstract] |  |  |
Carrying amount of Installment savings | [1] | ₩ 137,975 |
Gain (loss) from redemption on Installment savings | [1] | 1,639 |
Carrying amount of time deposits | [1] | 33,186 |
Gain (loss) from redemption on time deposits | [1] | ₩ (6,070) |
Accrued interest of installment savings and time deposits |  |  | ₩ 65,737
[1] | The carrying amount includes accrued interest of W 65,737 million.

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- Definition Accrued interest of installment savings and time deposits. + References No definition available. + Details
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- Definition Carrying amount of installment savings + References No definition available. + Details
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- Definition Cash and due from banks at amortized cost -Early redemptions of deposits measured at amortized cost + References No definition available. + Details
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- Definition Gian loss from redemption on installment savings + References No definition available. + Details
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- Definition Gian loss from redemption on time deposits + References No definition available. + Details
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