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Other Financial Assets and Liabilities - Additional Information (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of detailed information about financial instruments [line items] |  |  |
Ineffective portion recognized in profit or loss related to cash flow hedges | ₩ 963 | ₩ 41 | ₩ 2,707
Effective portion recognized in profit or loss related to cash flow hedges | 364,863 | 20,430 | 85,201
Valuation gains reclassified from other comprehensive income to profit or loss | ₩ (382,680) | ₩ 50,648 | ₩ 127,552

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