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Loans at amortized cost, etc. (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
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Loans at amortized cost [Abstract] |  |  |  |
Retail loans |  | ₩ 173,568,321 | ₩ 166,140,123 |
Corporate loans | [1] | 259,593,754 | 251,011,516 |
Public and other loans |  | 4,845,465 | 5,253,071 |
Loans between banks |  | 1,691,536 | 1,946,442 |
Credit card receivables |  | 28,653,978 | 28,894,371 |
Loans at amortized cost, Gross, Total |  | 468,353,054 | 453,245,523 |
Discount |  | (26,251) | (29,923) |
Deferred loan origination costs |  | 727,749 | 645,569 | ₩ 505,986
Loans at amortized cost before Allowance for credit losses, Total |  | 469,054,552 | 453,861,169 |
Less: Allowance for credit loss |  | (4,280,672) | (4,565,931) |
Loans at amortized cost, Net, Total |  | ₩ 464,773,880 | ₩ 449,295,238 |
[1] | Includes SOHO loans.

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- Definition The amount of consumer loans made by the entity. [Refer: Loans to consumers [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard -URIDate 2025-03-27 + Details
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Period Type: | instant

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- Definition The amount of corporate loans made by the entity. [Refer: Loans to corporate entities [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition Credit card receivable. + References No definition available. + Details
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- Definition Loans at amortized cost allowance for credit loss. + References No definition available. + Details
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- References No definition available. + Details
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- References No definition available. + Details
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