v3.26.1
Inventories - Additional Information (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Inventories [line items]      
Reversals of inventory write-downs ₩ 0    
Cost of goods sold [member]      
Inventories [line items]      
Inventories recognized as operating expenses ₩ 1,267,120 ₩ 1,323,907 ₩ 1,264,302