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Assets Pledged as Collateral and Assets Held as Collateral - Summary of assets pledged as collateral (Details) - KRW (₩) ₩ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024
Assets pledged as collateral [Line Items] |  |
Assets pledged as collateral | ₩ 156,351 | ₩ 586,768
Loans | Financial assets at amortised cost |  |
Assets pledged as collateral [Line Items] |  |
Assets pledged as collateral | ₩ 0 | 119,699
Reasons for collateral | Pledge for borrowing transaction |
Securities |  |
Assets pledged as collateral [Line Items] |  |
Assets pledged as collateral | ₩ 47,683,065 | 26,526,038
Securities | Financial assets at fair value through profit or loss |  |
Assets pledged as collateral [Line Items] |  |
Assets pledged as collateral | ₩ 12,402,270 | 14,837,334
Reasons for collateral | Customer RP, etc. |
Securities | Financial assets at amortised cost |  |
Assets pledged as collateral [Line Items] |  |
Assets pledged as collateral | ₩ 21,845,620 | 1,464,788
Reasons for collateral | Borrowings, Settlement security for Bank of Korea, Customer RP, etc. |
Securities | Financial assets at fair value through other comprehensive income |  |
Assets pledged as collateral [Line Items] |  |
Assets pledged as collateral | ₩ 13,435,175 | 10,223,916
Reasons for collateral | Borrowings, Settlement security for Bank of Korea, Borrowed securities, etc. |
Deposits | Financial assets at amortised cost |  |
Assets pledged as collateral [Line Items] |  |
Assets pledged as collateral | ₩ 315,986 | 1,845,022
Reasons for collateral | Borrowings, etc. |
Property and Equipment (real estate) |  |
Assets pledged as collateral [Line Items] |  |
Assets pledged as collateral | ₩ 3,474 | 5,515
Reasons for collateral | Establishing the right to collateral security, etc. |
Assets pledged as collateral |  |
Assets pledged as collateral [Line Items] |  |
Assets pledged as collateral | ₩ 48,002,525 | ₩ 28,496,274

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- Definition The description of collateral held as security and other credit enhancements in respect of the amount that best represents the maximum exposure to credit risk. This includes a description of the nature and quality of the collateral held, an explanation of any significant changes in the quality of that collateral or credit enhancements and information about financial instruments for which an entity has not recognised a loss allowance because of the collateral. [Refer: Credit risk [member]; Maximum exposure to credit risk] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2025-01-01 -Paragraph 35K -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35K_b&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Classes of contingent liabilities [domain]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2025-01-01 -Paragraph 14 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_14_a&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 51 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_51_a&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 51 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_51_a&doctype=Standard -URIDate 2025-03-27 + Details
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