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Risk Management - Summary of Sensitivity Analysis for Electricity 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 electricity rates [Line Items]

1% Increase

₩ 888,898

₩ 829,548

1% Decrease

(888,898)

(829,548)

Increase (decrease) of shareholder's equity

Disclosure of Sensitivity analysis for electricity rates [Line Items]

1% Increase

^[1]

888,898

829,548

1% Decrease

^[1]

₩ (888,898)

₩ (829,548)

[1]	The effect on the equity excluding the impact of income taxes.