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Financial risk management - Interest rate risk management from non-trading positions (Details) - KRW (₩)
₩ in Millions
Dec. 31, 2025
Dec. 31, 2024
Shinhan Bank    
Interest rate risk management from non-trading positions [Line Items]    
delta EVE [1] ₩ 1,399,226 ₩ 1,508,514
delta NII [2] 255,874 406,207
Shinhan Card Co., Ltd.    
Interest rate risk management from non-trading positions [Line Items]    
delta EVE [1] 824,951 990,898
delta NII [2] 587,147 600,681
Shinhan Securities Co., Ltd.    
Interest rate risk management from non-trading positions [Line Items]    
delta EVE [1] 202,411 252,625
delta NII [2] 280,082 418,741
Shinhan Life Insurance Co., Ltd.    
Interest rate risk management from non-trading positions [Line Items]    
delta EVE [1] 2,847,851 3,848,473
delta NII [2] ₩ 30,124 ₩ 44,525
[1] ΔEVE is the change in economic value of equity capital that can arise from changes in interest rates that affect the present value of assets, liabilities and off-balance sheet items by using the Basel III standard based IRRBB method.
[2] ΔNII is the change in net interest income that can occur over the next year due to changes in interest rates by using the Basel III standard based IRRBB method.