Financial Liabilities at FVTPL - Summary Of Carrying Amount And Nominal Amount At Maturity Of Financial Liabilities At FVTPL (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Financial liabilities at fair value through profit or loss [abstract]
Carrying amount	₩ 467,501	₩ 547,816	₩ 0
Nominal amount at maturity	450,000	530,000
Difference	₩ 17,501	₩ 17,816

The amount by which the carrying amount of a financial liability is more (less) than the amount that the entity would be contractually required to pay at maturity to the holder of the obligation. [Refer: Carrying amount [member]]