Geographic and Other Information - Revenue by Product and Services (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022		Dec. 31, 2021
Disclosure of products and services [Line Items]
Revenue	₩ 21,330,819	₩ 26,151,781		₩ 29,878,043
Revenue included in forward exchange hedging loss	21,330,819	26,364,737	[1],[2]	29,878,043
TV [member]
Disclosure of products and services [Line Items]
Revenue	4,331,474	6,975,269	[2]	9,466,192
IT [Member]
Disclosure of products and services [Line Items]
Revenue	7,853,034	11,197,954	[2]	12,458,740
Mobile and others [member]
Disclosure of products and services [Line Items]
Revenue	₩ 9,146,311	₩ 8,191,514	[2]	₩ 7,953,111

[1] Revenue for 2022 excludes W212,956 million of forward exchange hedging loss which was reclassified from accumulated other comprehensive income to revenue when the sales from the hedged forecast transactions are recognized.

[2] Revenue for 2022 excludes W212,956 million of forward exchange hedging loss which was reclassified from accumulated other comprehensive income to revenue when the sales from the hedged forecast transactions are recognized.