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Interests in unconsolidated structured entities (Tables) | 12 Months Ended
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Dec. 31, 2025
Disclosure of unconsolidated structured entities [abstract] |
Summary of the size of unconsolidated structured entities | The size of unconsolidated structured entities as of December 31, 2024 and 2025 are as follows:
|  | 2024 |  |  | 2025 |
Total assets: |  |  |  |  |  |  |  |
Asset-backed securitization |  | W | 193,570,970 |  |  |  | 180,681,470 |
Structured financing |  |  | 506,473,200 |  |  |  | 567,491,062 |
Investment fund |  |  | 508,704,815 |  |  |  | 603,354,883 |
|  | W | 1,208,748,985 |  |  |  | 1,351,527,415 |
Summary of the carrying amounts of the assets and liabilities relating to its interests in unconsolidated structured entities | i) The carrying amounts of the assets and liabilities relating to its interests in unconsolidated structured entities as of December 31, 2024 and 2025 are as follows:
|  | 2024 |
|  | Asset-backed securitization |  |  | Structured financing |  |  | Investment fund |  |  | Total |
Assets under consolidated financial statements: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans at FVTPL |  | W | 11,669 |  |  |  | 600,796 |  |  |  | — |  |  |  | 612,465 |
Loan at amortized cost |  |  | 2,326,196 |  |  |  | 18,660,200 |  |  |  | 93,296 |  |  |  | 21,079,692 |
Securities at FVTPL |  |  | 4,233,165 |  |  |  | 255,936 |  |  |  | 14,902,327 |  |  |  | 19,391,428 |
Derivative assets |  |  | 16,012 |  |  |  | — |  |  |  | — |  |  |  | 16,012 |
Securities at FVOCI |  |  | 4,124,742 |  |  |  | 176,273 |  |  |  | — |  |  |  | 4,301,015 |
Securities at amortized cost |  |  | 4,879,484 |  |  |  | — |  |  |  | 93 |  |  |  | 4,879,577 |
Other assets |  |  | 13,700 |  |  |  | 73,981 |  |  |  | 28,076 |  |  |  | 115,757 |
|  | W | 15,604,968 |  |  |  | 19,767,186 |  |  |  | 15,023,792 |  |  |  | 50,395,946 |
Liabilities under consolidated financial statements: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liabilities |  | W | 3,130 |  |  |  | 220 |  |  |  | — |  |  |  | 3,350 |
Other liabilities |  |  | 510 |  |  |  | 4,295 |  |  |  | 3 |  |  |  | 4,808 |
|  | W | 3,640 |  |  |  | 4,515 |  |  |  | 3 |  |  |  | 8,158 |
|  | 2025 |
|  | Asset-backed securitization |  |  | Structured financing |  |  | Investment fund |  |  | Total |
Assets under consolidated financial statements: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans at FVTPL |  | W | 4,622 |  |  |  | 746,038 |  |  |  | — |  |  |  | 750,660 |
Loan at amortized cost |  |  | 2,971,101 |  |  |  | 19,410,662 |  |  |  | 150,857 |  |  |  | 22,532,620 |
Securities at FVTPL |  |  | 4,491,692 |  |  |  | 322,481 |  |  |  | 16,428,693 |  |  |  | 21,242,866 |
Derivative assets |  |  | 9,286 |  |  |  | — |  |  |  | — |  |  |  | 9,286 |
Securities at FVOCI |  |  | 3,721,496 |  |  |  | 138,153 |  |  |  | — |  |  |  | 3,859,649 |
Securities at amortized cost |  |  | 4,089,597 |  |  |  | — |  |  |  | 80 |  |  |  | 4,089,677 |
Other assets |  |  | 12,665 |  |  |  | 101,058 |  |  |  | 2,439 |  |  |  | 116,162 |
|  | W | 15,300,459 |  |  |  | 20,718,392 |  |  |  | 16,582,069 |  |  |  | 52,600,920 |
Liabilities under consolidated financial statements: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liabilities |  | W | 2,101 |  |  |  | — |  |  |  | — |  |  |  | 2,101 |
Other liabilities |  |  | 315 |  |  |  | 6,481 |  |  |  | — |  |  |  | 6,796 |
|  | W | 2,416 |  |  |  | 6,481 |  |  |  | — |  |  |  | 8,897 |
Summary of exposure to risk relating to its interests in unconsolidated structured entities | ii) The maximum risk exposure of the Group relating to its interests in unconsolidated structured entities as of December 31, 2024 and 2025 are as follows:
|  | 2024 |
|  | Asset-backed securitization |  |  | Structured financing |  |  | Investment fund |  |  | Total |
Assets held |  | W | 15,604,968 |  |  |  | 19,767,186 |  |  |  | 15,023,792 |  |  |  | 50,395,946 |
ABS and ABCP purchase agreements |  |  | 1,125,400 |  |  |  | 224,184 |  |  |  | 2,246,239 |  |  |  | 3,595,823 |
Loan commitments |  |  | 327,367 |  |  |  | 916,236 |  |  |  | 41,656 |  |  |  | 1,285,259 |
Guarantees |  |  | 111,150 |  |  |  | 8,900 |  |  |  | — |  |  |  | 120,050 |
Others |  |  | — |  |  |  | 383,071 |  |  |  | — |  |  |  | 383,071 |
|  | W | 17,168,885 |  |  |  | 21,299,577 |  |  |  | 17,311,687 |  |  |  | 55,780,149 |
|  | 2025 |
|  | Asset-backed securitization |  |  | Structured financing |  |  | Investment fund |  |  | Total |
Assets held |  | W | 15,300,459 |  |  |  | 20,718,392 |  |  |  | 16,582,069 |  |  |  | 52,600,920 |
ABS and ABCP purchase agreements |  |  | 1,802,241 |  |  |  | 277,917 |  |  |  | 2,203,699 |  |  |  | 4,283,857 |
Loan commitments |  |  | 256,038 |  |  |  | 1,458,320 |  |  |  | 67,807 |  |  |  | 1,782,165 |
Guarantees |  |  | 31,450 |  |  |  | 6,000 |  |  |  | — |  |  |  | 37,450 |
Others |  |  | — |  |  |  | 263,836 |  |  |  | — |  |  |  | 263,836 |
|  | W | 17,390,188 |  |  |  | 22,724,465 |  |  |  | 18,853,575 |  |  |  | 58,968,228 |

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- Definition The disclosure of interests in structured entities that are not controlled by the entity (unconsolidated structured entities). [Refer: Total for all unconsolidated structured entities [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2025-01-01 -Paragraph 2 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_2_b_iii&doctype=Standard -URIDate 2025-03-27 + Details
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