v3.26.1
Fair value of financial assets and liabilities - Financial liabilities by category (Details)
$ in Thousands, ₩ in Millions
Dec. 31, 2025
KRW (₩)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
KRW (₩)
Dec. 31, 2023
KRW (₩)
Disclosure of financial liabilities [line items]        
Financial liabilities at FVTPL ₩ 5,889,433   ₩ 9,348,781  
Financial liabilities designated at FVTPL 467,501   547,816 ₩ 0
Financial liabilities at amortised cost 507,357,601   476,932,250  
Derivative liabilities (designated for hedging) 615,361 $ 425,987 102,815  
Total 514,329,896   486,931,662  
Deposits due to customers        
Disclosure of financial liabilities [line items]        
Financial liabilities at FVTPL 263,251   74,205  
Financial liabilities designated at FVTPL 467,501   547,816  
Financial liabilities at amortised cost 376,580,845   366,821,156  
Derivative liabilities (designated for hedging) 0   0  
Total 377,311,597   367,443,177  
Borrowings        
Disclosure of financial liabilities [line items]        
Financial liabilities at FVTPL 496,518   182,478  
Financial liabilities designated at FVTPL 0   0  
Financial liabilities at amortised cost 34,183,267   30,117,031  
Derivative liabilities (designated for hedging) 0   0  
Total 34,679,785   30,299,509  
Debentures        
Disclosure of financial liabilities [line items]        
Financial liabilities at FVTPL 0   0  
Financial liabilities designated at FVTPL 0   0  
Financial liabilities at amortised cost 55,583,392   48,207,103  
Derivative liabilities (designated for hedging) 0   0  
Total 55,583,392   48,207,103  
Investment contract liabilities        
Disclosure of financial liabilities [line items]        
Financial liabilities at FVTPL 0      
Financial liabilities designated at FVTPL 0      
Financial liabilities at amortised cost 3,433,611      
Derivative liabilities (designated for hedging) 0      
Total 3,433,611      
Derivative Liabilities        
Disclosure of financial liabilities [line items]        
Financial liabilities at FVTPL 5,129,664   9,092,098  
Financial liabilities designated at FVTPL 0   0  
Financial liabilities at amortised cost 0   0  
Derivative liabilities (designated for hedging) 615,361   102,815  
Total 5,745,025   9,194,913  
Other financial liabilities        
Disclosure of financial liabilities [line items]        
Financial liabilities at FVTPL 0 [1]   0 [2]  
Financial liabilities designated at FVTPL 0 [1]   0 [2]  
Financial liabilities at amortised cost 37,576,486 [1]   31,786,960 [2]  
Derivative liabilities (designated for hedging) 0 [1]   0 [2]  
Total ₩ 37,576,486 [1]   ₩ 31,786,960 [2]  
[1] Lease liabilities are excluded as of December 31, 2025.
[2] Lease liabilities are excluded as of December 31, 2024.