Geographic and Other Information - Additional Information (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of geographical areas [Line Items]
Sales revenue	₩ 26,151,781	₩ 29,878,043	₩ 24,261,561
Company A [member]
Disclosure of geographical areas [Line Items]
Sales revenue	11,731,702	12,019,534	10,380,138
Company B [member]
Disclosure of geographical areas [Line Items]
Sales revenue	₩ 4,699,282	₩ 5,924,262	₩ 4,252,696
Top 10 Companies [member]
Disclosure of geographical areas [Line Items]
Percentage of sales revenue	86.00%	86.00%	85.00%

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