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Risk Management - Summary of Sensitivity Analysis for Interest Rates (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Increase (decrease) of profit before income tax |  |  |
Disclosure Of Sensitivity Analysis For Interest Rates [Line Items] |  |  |
1% Increase |  | ₩ (125,076) | ₩ (88,121)
1% Decrease |  | 125,076 | 88,121
Increase (decrease) of shareholder's equity |  |  |
Disclosure Of Sensitivity Analysis For Interest Rates [Line Items] |  |  |
1% Increase | [1] | (125,076) | (88,121)
1% Decrease | [1] | ₩ 125,076 | ₩ 88,121
[1] | The effect on the shareholders’ equity excluding the impact of income taxes.

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