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Equity - Capital adjustments (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Capital adjustments [Abstract] |  |  |
Beginning balance | ₩ (807,114) | ₩ (658,664) |
Acquisition of treasury stock | (1,250,001) | (700,000) | ₩ (485,947)
Disposal and retirement of treasury stocks | 900,000 | 450,297 |
Repayments of hybrid bonds | (1,322) | 102,143 |
Other transactions with owners | (21,643) | (890) |
Ending balance | ₩ (1,180,080) | ₩ (807,114) | ₩ (658,664)

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- Definition The decrease in equity resulting from the purchase of treasury shares. [Refer: Treasury shares] + 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 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_d&doctype=Standard -URIDate 2025-03-27 + Details
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- References No definition available. + Details
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- References No definition available. + Details
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- Definition Capital adjustments repayments of hybrid bonds. + 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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