v3.25.4
Significant accounting policies - Segment reporting (Details)
12 Months Ended
Dec. 31, 2025
segment
Significant accounting policies [Abstract]
Number of reportable segments
1
X
- Definition
The number of segments reported by the entity.
+ References
No definition available.
+ Details
Name:
sek_IfrsNumberOfReportableSegments
Namespace Prefix:
sek_
Data Type:
xbrli:integerItemType
Balance Type:
na
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
sek_SignificantAccountingPoliciesAbstract
Namespace Prefix:
sek_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration