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Deferred Income Tax and Income Tax Expense - Summary of Details of Income Tax Expense (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Deferred tax assets and liabilities [abstract]      
Current income tax expense ₩ 335,796 ₩ 289,471 ₩ 213,225
Impact of change in deferred taxes 169,961 229,545 72,124
Income tax expense ₩ 505,757 ₩ 519,016 ₩ 285,349