v3.25.4
Risk information - Foreign currency position (Details) - FX
kr in Millions
Dec. 31, 2025
SEK (kr)
£ / kr
$ / kr
R$ / kr
¥ / kr
$ / kr
$ / kr
€ / kr
Dec. 31, 2024
SEK (kr)
¥ / kr
€ / kr
£ / kr
$ / kr
$ / kr
R$ / kr
$ / kr
Total foreign currency position    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Share at year-end (as a %) 3.10% 4.20%
Currency position kr (291) kr 50
AUD    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Exchange rate | $ / kr 6.1682 6.8684
Share at year-end (as a %) 0.90% 0.70%
Currency position kr 214 kr 187
EUR    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Exchange rate | € / kr 10.8308 11.4822
Share at year-end (as a %) 0.60% 1.20%
Currency position kr (155) kr 297
MXN    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Exchange rate | $ / kr 0.5134 0.5406
Share at year-end (as a %) 0.50% 0.40%
Currency position kr (137) kr (107)
BRL    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Exchange rate | R$ / kr 1.6782 1.7876
Share at year-end (as a %) 0.30% 0.10%
Currency position kr (65) kr (19)
USD    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Exchange rate | $ / kr 9.2140 11.0488
Share at year-end (as a %) 0.10% 0.80%
Currency position kr (27) kr (210)
JPY    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Exchange rate | ¥ / kr 0.0589 0.0703
Share at year-end (as a %) 0.00% 0.20%
Currency position kr 12 kr 54
GBP    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Exchange rate | £ / kr 12.4029 13.8574
Share at year-end (as a %) 0.00% 0.20%
Currency position kr (3) kr (59)
Other    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Share at year-end (as a %) 0.70% 0.60%
Currency position kr (130) kr (93)