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Risk Management - Summary of Sensitivity Analysis for Foreign Currency Exchange Rates (Details) - KRW (₩)
₩ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Increase (decrease) of profit before income tax    
Disclosure of sensitivity analysis for foreign currency exchange rates [Line Items]    
10% Increase ₩ (1,828,308) ₩ (1,703,053)
10% Decrease 1,828,308 1,703,053
Increase (decrease) of equity    
Disclosure of sensitivity analysis for foreign currency exchange rates [Line Items]    
10% Increase [1] (1,828,308) (1,703,053)
10% Decrease [1] ₩ 1,828,308 ₩ 1,703,053
[1] The effect on the shareholders’ equity excluding the impact of income taxes.