Information About Geographical Areas and Products - Additional Information (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of geographical areas [Line Items]
Revenue	₩ 26,615,347	₩ 21,330,819	₩ 26,151,781
Revenue Recognized by Satisfying Performance Obligation	₩ 589,055
OLED Products [member]
Disclosure of geographical areas [Line Items]
Percentage of revenue from products	55.00%	48.00%	40.00%
Customer A [member]
Disclosure of geographical areas [Line Items]
Revenue	₩ 14,281,844	₩ 11,119,769	₩ 11,731,702
Customer B [member]
Disclosure of geographical areas [Line Items]
Revenue	₩ 3,767,278	₩ 3,371,229	₩ 4,699,282
Top 10 Customer [member]
Disclosure of geographical areas [Line Items]
Percentage of revenue	89.00%	87.00%	86.00%

The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

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+ Details