v3.26.1
Financial Risk Management - Carrying Amount of Financial Instruments Recognized of Which Offset Agreements are Applicable (Detail) - KRW (₩)
₩ in Millions
Dec. 31, 2025
Dec. 31, 2024
Accounts receivable - trade and others [member]    
Disclosure of detailed information about financial instruments [Line items]    
Financial assets, Gross financial instruments recognized ₩ 222,477 ₩ 186,284
Financial assets, Amount offset (209,487) (174,372)
Financial assets, Net financial instruments presented on the statements of financial position 12,990 11,912
Accounts payable - other and others [member]    
Disclosure of detailed information about financial instruments [Line items]    
Financial liabilities, Gross financial instruments recognized 213,881 180,323
Financial liabilities, Amount offset (209,487) (174,372)
Financial liabilities, Net financial instruments presented on the statements of financial position ₩ 4,394 ₩ 5,951