v3.26.1
Net Defined Benefit Liability (Asset) - Summary Of Changes In The Plan Assets (Details) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Changes in net defined benefit liability (asset) [abstract]      
Interest income ₩ (2,014) ₩ (14,022) ₩ (18,867)
Remeasurements [1] 15,539 84,590 107,962
Plan assets      
Disclosure of net defined benefit liability (asset) [line items]      
Beginning balance 1,892,290 1,807,408 1,661,623
Changes in net defined benefit liability (asset) [abstract]      
Interest income 78,326 84,981 91,550
Remeasurements (12,240) (15,323) (23,752)
Employer's contributions 261,143 115,159 175,220
Retirement benefit paid (138,874) (94,940) (94,607)
Changes due to business combinations 80,980 0 0
Others (4,462) (4,995) (2,626)
Ending balance ₩ 2,157,163 ₩ 1,892,290 ₩ 1,807,408
[1] Amount before tax