Geographic and Other Information - Revenue by Product and Services (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022		Dec. 31, 2021	Dec. 31, 2020
Disclosure of products and services [Line Items]
Revenue	₩ 26,151,781		₩ 29,878,043	₩ 24,261,561
Revenue included in forward exchange hedging loss	26,364,737	[1],[2]	29,878,043	24,261,561
TV [member]
Disclosure of products and services [Line Items]
Revenue	6,975,269	[1]	9,466,192	6,737,654
IT [Member]
Disclosure of products and services [Line Items]
Revenue	11,197,954	[1]	12,458,740	10,120,668
Mobile and others [member]
Disclosure of products and services [Line Items]
Revenue	₩ 8,191,514	[1]	₩ 7,953,111	₩ 7,403,239

[1] (*) Total revenue in 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] Total revenue in 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.