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Share Capital - Summary of Share Capital (Detail) ₩ in Millions | Dec. 31, 2024 KRW (₩) shares | Dec. 31, 2024 $ / shares | Dec. 31, 2023 KRW (₩) shares | Dec. 31, 2023 $ / shares
--- | --- | --- | --- | ---
Disclosure of classes of share capital [Line Items] |  |  |  |
Ordinary Shares | ₩ 1,564,499 |  | ₩ 1,564,499 |
Ordinary shares [member] |  |  |  |
Disclosure of classes of share capital [Line Items] |  |  |  |
Number of issued shares | shares | 252,021,685 |  | 257,860,760 |
Par value per share | $ / shares |  | $ 5,000 |  | $ 5,000
Ordinary Shares | ₩ 1,564,499 |  | ₩ 1,564,499 |

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