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Inventories - Summary of Inventories Net (Detail) - KRW (₩)
₩ in Millions
Dec. 31, 2023
Dec. 31, 2022
Disclosure of inventories [line items]    
Inventories ₩ 988,351 ₩ 717,673
Merchandise [member]    
Disclosure of inventories [line items]    
Inventories 878,912 672,738
Others [member]    
Disclosure of inventories [line items]    
Inventories 109,439 44,935
Gross carrying amount [member]    
Disclosure of inventories [line items]    
Inventories 1,090,566 813,683
Gross carrying amount [member] | Merchandise [member]    
Disclosure of inventories [line items]    
Inventories 981,127 768,748
Gross carrying amount [member] | Others [member]    
Disclosure of inventories [line items]    
Inventories 109,439 44,935
Valuation allowance [member]    
Disclosure of inventories [line items]    
Inventories (102,215) (96,010)
Valuation allowance [member] | Merchandise [member]    
Disclosure of inventories [line items]    
Inventories ₩ (102,215) ₩ (96,010)