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Lease - Summary of right of use assets (Detail) - KRW (₩)
₩ in Millions
Dec. 31, 2022
Dec. 31, 2021
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets ₩ 1,786,129 ₩ 1,559,333
Land buildings and structures [member]    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets 1,546,918 1,392,925
Other assets [member]    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets ₩ 239,211 ₩ 166,408