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Investment Properties - Additional Information (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure of detailed information about investment property [line items]    
Fair value of investment properties ₩ 5,370,047 ₩ 4,263,381
Rental income from investment properties 206,127 ₩ 185,877
Future minimum lease fee 191,858  
Less than 1 year [member]    
Disclosure of detailed information about investment property [line items]    
Future minimum lease fee 57,981  
1-5 years [member]    
Disclosure of detailed information about investment property [line items]    
Future minimum lease fee 107,386  
More than 5 years [member]    
Disclosure of detailed information about investment property [line items]    
Future minimum lease fee ₩ 26,491