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Finance Income and Costs - Details of Interest Expenses Included in Finance Income (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Analysis of income and expense [abstract]      
Interest expense on borrowings ₩ 25,736 ₩ 66,188 ₩ 116,397
Interest expense on debentures 217,475 224,144 225,309
Others 85,096 52,010 57,470
Interest expense ₩ 328,307 ₩ 342,342 ₩ 399,176