Earnings (Loss) per Share Attributable to Owners of the Controlling Company - Summary of Basic Earnings per Share (Detail) - KRW (₩)	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Basic earnings per share [abstract]
Profit (loss) attributable to owners of the Controlling Company for the year	₩ (2,733,741,837,803)	₩ (3,071,564,667,651)	₩ 1,186,182,126,952
Weighted-average number of common stocks outstanding	357,815,700	357,815,700	357,815,700
Basic loss per share	₩ (7,640)	₩ (8,584)	₩ 3,315

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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-IssueDate 2023-01-01
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 33
-IssueDate 2023-01-01
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2023-en-r&anchor=para_67&doctype=Standard
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