v3.26.1
Reserves - Details of Reserves, Net of Taxes (Detail) - KRW (₩)
₩ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of reserves within equity [abstract]      
Valuation gain on FVOCI ₩ 1,570,314 ₩ 262,657  
Other comprehensive income of investments in associates and joint ventures 368,213 315,283  
Valuation gain (loss) on derivatives 14,503 (8,044)  
Foreign currency translation differences for foreign operations 72,652 77,047  
Total reserves, net of taxes ₩ 2,025,682 ₩ 646,943 ₩ 387,216