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Dividends - Disclosure of interim dividends paid (Parenthetical) (Details) - ₩ / shares | 3 Months Ended
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Nov. 04, 2025 | Aug. 01, 2025 | May 02, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023
Convertible Preferred Stocks [Member] |  |  |  |  |  |  |  |  |
Disclosure Of Interim Dividends Paid [Line Items] |  |  |  |  |  |  |  |  |
Dividends Payable Amount Per Share |  |  |  |  |  |  |  |  | ₩ 525
Ordinary shares [member] |  |  |  |  |  |  |  |  |
Disclosure Of Interim Dividends Paid [Line Items] |  |  |  |  |  |  |  |  |
Dividends Payable Amount Per Share | ₩ 570 | ₩ 570 | ₩ 570 | ₩ 540 | ₩ 540 | ₩ 540 | ₩ 525 | ₩ 525 | ₩ 525

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- Definition Disclosure of interim dividends paid. + References No definition available. + Details
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- Definition Dividends payable amount per share. + References No definition available. + Details
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- Details
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- Details
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