Earnings (Loss) per Share - Summary of Basic Loss per Share (Detail) - KRW (₩)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Basic earnings per share [abstract]
Profit (loss) for the year	₩ 226,311,788,315	₩ (2,562,606,429,762)	₩ (2,733,741,837,803)
Weighted-average number of common stocks outstanding	500,000,000	471,252,355	380,884,673
Basic earnings (loss) per share	₩ 453	₩ (5,438)	₩ (7,177)

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).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 33
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