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Defined Benefit Liabilities (Assets) - Total Amount of Expenses Recognized in Profit and Loss (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of defined benefit plans [abstract]      
Current service cost ₩ 134,847 ₩ 186,395  
Net interest cost (338) 4,067  
Total amount of expenses recognized in profit and loss ₩ 134,509 ₩ 190,462 ₩ 198,794