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Risk Management - Summary of Sensitivity Analysis for Interest Rates (Details) - KRW (₩)
₩ in Millions

12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Increase (decrease) of income before income tax

Disclosure Of Sensitivity Analysis For Interest Rates [Line Items]

1% Increase

₩ (30,548)

₩ (26,138)

1% Decrease

30,548

26,138

Increase (decrease) of shareholder's equity

Disclosure Of Sensitivity Analysis For Interest Rates [Line Items]

1% Increase

^[1]

(30,548)

(26,138)

1% Decrease

^[1]

₩ 30,548

₩ 26,138

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