Geographic and Other Information - Additional Information (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure of geographical areas [Line Items]
Sales revenue	₩ 21,330,819	₩ 26,151,781	₩ 29,878,043
OLED Products [member]
Disclosure of geographical areas [Line Items]
Percentage of revenue from products	48.00%	40.00%	36.00%
Company A [member]
Disclosure of geographical areas [Line Items]
Sales revenue	₩ 11,119,769	₩ 11,731,702	₩ 12,019,534
Company B [member]
Disclosure of geographical areas [Line Items]
Sales revenue	₩ 3,371,229	₩ 4,699,282	₩ 5,924,262
Top 10 Companies [member]
Disclosure of geographical areas [Line Items]
Percentage of sales revenue	87.00%	86.00%	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