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Financial Income and Costs - Summary of Details of Financial Expense (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure Of Finance Income [line items] |  |  |
Interest expenses | ₩ 374,665 | ₩ 356,345 | ₩ 293,854
Loss on foreign currency transactions | 49,308 | 34,281 | 81,171
Loss on foreign currency translation | 426,842 | 95,730 | 200,109
Loss on derivative transactions | 10,651 | 417 | 24,331
Loss on valuation of derivatives | 3,793 | 6,598 | 21,601
Loss on valuation of financial instruments | 112,154 | 55,049 | 65,660
Others | 9,413 | 2,282 | 485
Total | 994,781 | 568,682 | 749,908
Loans and receivables [member] |  |  |
Disclosure Of Finance Income [line items] |  |  |
Loss on disposal of trade receivables | ₩ 7,955 | ₩ 17,980 | ₩ 62,697

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