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Related Party Transactions - Summary of Significant Transactions with Related Parties (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of transactions between related parties [line items]      
Operating Revenue ₩ 50,650 ₩ 41,925 ₩ 296,186
Purchases 58,339 54,222 37,774
K-Realty CR-REITs No.1 [member]      
Disclosure of transactions between related parties [line items]      
Operating Revenue     238,847
Purchases     1,308
HD Hyundai Robotics Co., Ltd.(formerly Hyundai Robotics Co., Ltd.) [member]      
Disclosure of transactions between related parties [line items]      
Operating Revenue 78    
Purchases 182    
K-Realty 11th Real Estate Investment Trust Company [Member]      
Disclosure of transactions between related parties [line items]      
Operating Revenue 346 330  
Purchases 2,559 1,674  
K-Realty 11th Real Estate Investment Trust Company [member]      
Disclosure of transactions between related parties [line items]      
Operating Revenue 6,216    
Others [member]      
Disclosure of transactions between related parties [line items]      
Operating Revenue 21,308 11,964 28,092
Purchases 42,169 37,742 21,302
Digital Pharm Co., Ltd [Member]      
Disclosure of transactions between related parties [line items]      
Operating Revenue 1 1  
K Bank [member]      
Disclosure of transactions between related parties [line items]      
Operating Revenue 22,701 29,536 24,247
Purchases ₩ 13,429 11,007 15,164
IGIS Professional Investors Private Investment Real Estate Investment LLC No.395 [Member]      
Disclosure of transactions between related parties [line items]      
Operating Revenue     ₩ 5,000
Hyundai Robotics Co., Ltd [Member]      
Disclosure of transactions between related parties [line items]      
Operating Revenue   94  
Purchases   ₩ 3,799