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Equity - Capital stock of the Group (Details) - KRW (₩) ₩ / shares in Units, ₩ in Millions | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Disclosure of classes of share capital [line items] |  |  |  |
Number of authorized shares | 1,000,000,000 |  | 1,000,000,000 |
Ordinary shares |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Par value per share in won | ₩ 5,000 | [1] | ₩ 5,000 | ₩ 5,000
Number of shares issued | 485,494,934 | [1] | 503,445,325 | 512,759,471
Capital stock | ₩ 2,695,586 |  | ₩ 2,695,586 |
Preferred shares |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Par value per share in won | ₩ 0 |  | ₩ 0 |
Number of shares issued | 0 |  | 0 |
Capital stock | ₩ 274,055 |  | ₩ 274,055 |
[1] | The proposed dividend is scheduled to be resolved at the general meeting of shareholders on March 26, 2026, and therefore has not been recognized as a distribution to owners during the current period.

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