v3.26.1
Financial assets and liabilities at fair value - Financial assets and liabilities at fair value in level 3 (Details) - SEK (kr)
kr in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Reconciliation of changes in fair value measurement, liabilities    
Financial liabilities at beginning of period kr (314,304)  
Financial liabilities at end of period (322,449) kr (314,304)
Level 3    
Financial assets and liabilities at fair value in level 3    
Financial assets and liabilities at fair value, at the beginning of period (3,661) (4,903)
Settlements & sales 1,730 588
Transfers from Level 3 404  
Gains (+) and losses (-) through profit or loss 2 (10)
Gains (+) and losses (-) in other comprehensive income 10 (22)
Exchange rate differences (98) 686
Financial assets and liabilities at fair value, at the end of period (1,614) (3,661)
Unrealized fair value changes (1) (10)
Debt securities issued | Level 3    
Reconciliation of changes in fair value measurement, liabilities    
Financial liabilities at beginning of period (2,598) (3,452)
Settlements & sales 1,188 414
Transfers from Level 3 346  
Gains (+) and losses (-) through profit or loss 38 (32)
Gains (+) and losses (-) in other comprehensive income 10 (22)
Exchange rate differences (20) 494
Financial liabilities at end of period (1,037) (2,598)
Derivatives | Level 3    
Financial assets and liabilities at fair value in level 3    
Financial assets and liabilities at fair value, at the beginning of period (1,063) (1,451)
Settlements & sales 543 174
Transfers from Level 3 58  
Gains (+) and losses (-) through profit or loss (36) 22
Exchange rate differences (78) 192
Financial assets and liabilities at fair value, at the end of period kr (577) kr (1,063)