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Risk Management - Summary of Sensitivity Analysis for Foreign Currency Exchange Rates (Details) - KRW (₩)
₩ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Increase (decrease) of profit before income tax    
Disclosure of sensitivity analysis for foreign currency exchange rates [Line Items]    
10% Increase ₩ (2,114,808) ₩ (1,828,308)
10% Decrease 2,114,808 1,828,308
Increase (decrease) of equity    
Disclosure of sensitivity analysis for foreign currency exchange rates [Line Items]    
10% Increase [1] (2,114,808) (1,828,308)
10% Decrease [1] ₩ 2,114,808 ₩ 1,828,308
[1] The effect on the shareholders’ equity excluding the impact of income taxes.