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Leases - Summary of the maturity of the lease liability (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2025 | Dec. 31, 2024
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Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | ₩ 790,339 | ₩ 890,689
Real estate |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 748,881 | 844,958
Vehicle |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 28,736 | 32,628
Others |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 12,722 | 13,103
Less than 1 month |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 39,743 | 39,193
Less than 1 month | Real estate |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 32,077 | 31,623
Less than 1 month | Vehicle |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 6,899 | 6,849
Less than 1 month | Others |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 767 | 721
1~3 months |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 46,814 | 47,913
1~3 months | Real estate |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 44,129 | 45,513
1~3 months | Vehicle |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 2,052 | 1,687
1~3 months | Others |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 633 | 713
3~6 months |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 67,912 | 67,440
3~6 months | Real estate |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 63,944 | 63,760
3~6 months | Vehicle |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 2,933 | 2,355
3~6 months | Others |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 1,035 | 1,325
6 months ~ 1 year |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 122,482 | 136,603
6 months ~ 1 year | Real estate |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 114,686 | 128,823
6 months ~ 1 year | Vehicle |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 5,420 | 5,578
6 months ~ 1 year | Others |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 2,376 | 2,202
1~5 years |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 420,879 | 503,513
1~5 years | Real estate |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 401,536 | 479,432
1~5 years | Vehicle |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 11,432 | 15,939
1~5 years | Others |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 7,911 | 8,142
More than 5 years |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 92,509 | 96,027
More than 5 years | Real estate |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 92,509 | 95,807
More than 5 years | Vehicle |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | 0 | 220
More than 5 years | Others |  |
Disclosure of maturity analysis of lease liability [Line Items] |  |
Lease liabilities | ₩ 0 | ₩ 0

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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2025-01-01 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_47_b&doctype=Standard -URIDate 2025-03-27 + Details
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