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Investment Properties - Additional Information (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of detailed information about investment property [line items]      
Fair value of investment properties ₩ 5,276,169 ₩ 5,370,047  
Rental income from investment properties 224,016 ₩ 206,127 ₩ 185,877
Future minimum lease fee 251,262    
Less than 1 year [member]      
Disclosure of detailed information about investment property [line items]      
Future minimum lease fee 101,738    
1-5 years [member]      
Disclosure of detailed information about investment property [line items]      
Future minimum lease fee 130,707    
More than 5 years [member]      
Disclosure of detailed information about investment property [line items]      
Future minimum lease fee ₩ 18,817