v3.26.1
Fair value of financial assets and liabilities - Financial assets by category (Details)
$ in Thousands, ₩ in Millions
Dec. 31, 2025
KRW (₩)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
KRW (₩)
Disclosure of financial assets [line items]      
Financial assets at fair value through profit or loss ₩ 34,245,475 $ 23,706,673 ₩ 25,202,672
Financial assets at FVTOCI 83,499,522 57,803,137 43,797,745
Financial assets at amortised cost 431,203,242   417,674,993
Derivative assets (Designated for hedging) 217,180 $ 150,345 175,191
Total 549,165,419   486,850,601
Deposits      
Disclosure of financial assets [line items]      
Financial assets at fair value through profit or loss 261,470   73,951
Financial assets at FVTOCI 0   0
Financial assets at amortised cost 2,674,644   2,630,604
Derivative assets (Designated for hedging) 0   0
Total 2,936,114   2,704,555
Securities      
Disclosure of financial assets [line items]      
Financial assets at fair value through profit or loss 26,997,640   14,879,996
Financial assets at FVTOCI 83,489,281   43,797,745
Financial assets at amortised cost 18,707,459   19,203,177
Derivative assets (Designated for hedging) 0   0
Total 129,194,380   77,880,918
Loans      
Disclosure of financial assets [line items]      
Financial assets at fair value through profit or loss 1,126,446   104,177
Financial assets at FVTOCI 10,241   0
Financial assets at amortised cost 398,706,030   386,069,294
Derivative assets (Designated for hedging) 0   0
Total 399,842,717   386,173,471
Derivative assets      
Disclosure of financial assets [line items]      
Financial assets at fair value through profit or loss 5,774,203   10,094,532
Financial assets at FVTOCI 0   0
Financial assets at amortised cost 0   0
Derivative assets (Designated for hedging) 217,180   175,191
Total 5,991,383   10,269,723
Other financial assets      
Disclosure of financial assets [line items]      
Financial assets at fair value through profit or loss 85,716   50,016
Financial assets at FVTOCI 0   0
Financial assets at amortised cost 11,115,109   9,771,918
Derivative assets (Designated for hedging) 0   0
Total ₩ 11,200,825   ₩ 9,821,934