The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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Earnings per Share - Summary Of Detailed Information Of Diluted Earnings Per Share (Detail) ₩ / shares in Units, ₩ in Millions	12 Months Ended
	Dec. 31, 2025 KRW (₩) ₩ / shares shares	Dec. 31, 2025 $ / shares	Dec. 31, 2024 KRW (₩) ₩ / shares shares	Dec. 31, 2024 $ / shares	Dec. 31, 2023 KRW (₩) ₩ / shares shares	Dec. 31, 2023 $ / shares
Statement [Line Items]
Profit from continuing operation attributable to owners of the Parent Company on common shares \| ₩					₩ 1,076,328
Adjusted weighted average number of common shares outstanding \| shares	212,975,220		213,428,916		217,452,721
Diluted earnings per share (in won) \| ₩ / shares	₩ 1,825		₩ 5,765		₩ 4,950
Parent Company [Member]
Statement [Line Items]
Profit from continuing operation attributable to owners of the Parent Company on common shares \| ₩	₩ 388,610		₩ 1,230,355		₩ 1,076,328
Adjusted weighted average number of common shares outstanding \| shares	212,975,220		213,428,916		217,452,721
Diluted earnings per share (in won) \| $ / shares		$ 1,825		$ 5,765		$ 4,950