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Earnings (Loss) Per Share - Summary of Basic Earnings Loss Per Share (Details) - KRW (₩) ₩ / shares in Units, ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Basic earnings per share [abstract]
Profit (loss) attributable to owners of the controlling company (previously stated)	₩ (24,466,853)	₩ (5,304,522)	₩ 1,991,347
Profit (loss) used in the calculation of total basic earnings (loss) per share	₩ (24,466,853)	₩ (5,304,522)	₩ 1,991,347
Weighted average number of common shares	641,964,077	641,964,077	641,964,077
Basic earnings (loss) per share	₩ (38,112)	₩ (8,263)	₩ 3,102

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- Definition

The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

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The profit (loss) attributable to ordinary equity holders of the parent entity. [Refer: Profit (loss)]

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The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

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