v3.26.1
Defined Benefit Liabilities (Assets) - Cost of Benefit Plan Recognized in Profit And Loss (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of defined benefit plans [abstract]      
Current service cost ₩ 123,241 ₩ 130,538  
Net interest income (4,366) (6,752)  
Past service cost 1,693 6,795  
Total amount of expenses recognized in profit and loss ₩ 120,568 ₩ 130,581 ₩ 124,439