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Commitments and contingencies - Summary of guarantees, acceptances and credit commitments (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Guarantees |  |
Outstanding guarantees | ₩ 18,642,539 | ₩ 15,315,381
Contingent guarantees | 4,917,473 | 5,068,782
ABS and ABCP purchase agreements | 2,649,382 | 2,123,665
Subtotal | 26,209,394 | 22,507,828
Commitments to extend credit |  |
Loan commitments in won | 95,042,772 | 93,064,772
Loan commitments in foreign currency | 25,559,545 | 28,613,692
Unused credit commitments | 93,230,869 | 90,700,766
Other agreements | 6,483,867 | 6,601,564
Subtotal | 220,317,053 | 218,980,794
Endorsed bills |  |
Secured endorsed bills | 12,574 | 1,367
Unsecured endorsed bills | 10,560,935 | 11,937,894
Subtotal | 10,573,509 | 11,939,261
Total | ₩ 257,099,956 | ₩ 253,427,883

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- Definition The amount of contractual undiscounted cash flows for gross commitments to receive a loan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2025-01-01 -Paragraph B11D -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B11D_e&doctype=Appendix&subtype=B -URIDate 2025-03-27 + Details
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- References No definition available. + Details
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