v3.25.2
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, 2025
Dec. 31, 2024
Reconciliation of changes in fair value measurement, liabilities    
Financial liabilities at beginning of period kr (330,209)  
Financial liabilities at end of period (340,161) kr (330,209)
Level 3    
Financial assets and liabilities at fair value in level 3    
Financial assets and liabilities at fair value, at the beginning of period (4,903) (10,550)
Settlements & sales 325 6,046
Gains (+) and losses (-) through profit or loss 0 11
Gains (+) and losses (-) in Other comprehensive income (10) 3
Exchange-rate differences assets and liabilities 607 (413)
Financial assets and liabilities at fair value, at the end of period (3,981) (4,903)
Unrealized fair value changes 1 1
Debt securities issued | Level 3    
Reconciliation of changes in fair value measurement, liabilities    
Financial liabilities at beginning of period (3,452) (8,271)
Settlements & sales 231 4,870
Gains (+) and losses (-) through profit or loss 35 (81)
Gains (+) and losses (-) in Other comprehensive income (10) 3
Exchange-rate differences 206 27
Financial liabilities at end of period (2,990) (3,452)
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 (1,451) (2,279)
Settlements & sales 94 1,176
Gains (+) and losses (-) through profit or loss (35) 92
Exchange-rate differences assets and liabilities 401 (440)
Financial assets and liabilities at fair value, at the end of period kr (991) kr (1,451)