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Commitments and Contingencies - Summary of Major Commitments with Local Financial Institutions (Detail) - Dec. 31, 2023
€ in Thousands, ¥ in Thousands, $ in Thousands, ₩ in Millions
KRW (₩)
USD ($)
EUR (€)
JPY (¥)
Disclosure of detailed information about borrowings [line items]        
Limit ₩ 3,497,090 $ 2,046,509,000 € 7,700,000 ¥ 400,000,000
Used amount 619,543 2,046,509,000 7,700,000 400,000,000
Bank overdraft [member] | Kookmin Bank and others [member]        
Disclosure of detailed information about borrowings [line items]        
Limit 374,000      
Used amount 0      
Inter-Korean Cooperation Fund [member] | Export-Import Bank of Korea [member]        
Disclosure of detailed information about borrowings [line items]        
Limit 37,700      
Used amount 1,480      
Economic Cooperation Business Insurance [member] | Export-Import Bank of Korea [member]        
Disclosure of detailed information about borrowings [line items]        
Limit 3,240      
Used amount 1,732      
Collateralised loans on electronic receivable-trade [member] | Kookmin Bank and others [member]        
Disclosure of detailed information about borrowings [line items]        
Limit 545,350      
Used amount 42,822      
Plus electronic notes payable [member] | Industrial Bank of Korea [member]        
Disclosure of detailed information about borrowings [line items]        
Limit 50,000      
Used amount 885      
Working capital loan [member] | Korea Development Bank and others [member]        
Disclosure of detailed information about borrowings [line items]        
Limit 1,562,800      
Used amount 142,700      
Working capital loan [member] | Shinhan Bank [member]        
Disclosure of detailed information about borrowings [line items]        
Limit | $   76,509    
Used amount | $   76,509    
Working capital loan [member] | Woori Bank [Member]        
Disclosure of detailed information about borrowings [line items]        
Limit | €     7,700  
Used amount | €     € 7,700  
Facility loans [member] | Shinhan Bank and others [member]        
Disclosure of detailed information about borrowings [line items]        
Limit 924,000      
Used amount ₩ 429,924      
Derivatives transaction limit [member] | Korea Development Bank and others [member]        
Disclosure of detailed information about borrowings [line items]        
Limit | $   1,970,000    
Used amount | $   $ 1,970,000    
Citi Bank [Member]        
Disclosure of detailed information about borrowings [line items]        
Limit | ¥       400,000
Used amount | ¥       ¥ 400,000