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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, 2024	Dec. 31, 2023	Dec. 31, 2022
Basic earnings per share [abstract]
Profit (loss) attributable to owners of the controlling company	₩ 3,491,698	₩ (4,822,549)	₩ (24,466,853)
Profit (loss) used in the calculation of total basic earnings (loss) per share	₩ 3,491,698	₩ (4,822,549)	₩ (24,466,853)
Weighted average number of common shares	641,964,077	641,964,077	641,964,077
Basic earnings (loss) per share	₩ 5,439	₩ (7,512)	₩ (38,112)

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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 profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]

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