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Other Financial Assets and Liabilities - Additional Information (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of detailed information about financial instruments [line items] |  |  |
Ineffective portion recognized in profit or loss cash flow hedge valuation gain | ₩ 11,825 | ₩ 2,711 | ₩ 2,707
Reclassified as accumulated other comprehensive income after tax | 76,296 |  |
Retained earnings of attributable to owners | 14,255,316 | 13,287,390 |
Disposal of investments in associates and joint ventures | 34,828 | ₩ 10,880 | ₩ 24
Equity Instruments Listed [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Retained earnings of attributable to owners | 53,052 |  |
Disposal of investments in associates and joint ventures | ₩ 206,840 |  |

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