v3.25.4
CIRR-system - Subclassifications of financial information (Details) - SEK (kr)
kr in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Analysis of income and expense [abstract]        
Interest income kr 14,117 kr 19,315 kr 19,438  
Interest expenses (11,398) (16,257) (16,543)  
Foreign exchange effects 7 (5) 2  
Financial position for CIRR-system        
Cash and cash equivalents 7,259 [1] 5,219 [1] kr 3,482 [1] kr 4,060
Derivatives 6,721 10,643    
Other assets 754 286    
Prepaid expenses and accrued revenues 7,775 8,145    
Total assets 349,964 368,094    
Derivatives 8,988 5,227    
Accrued expenses and prepaid revenues 8,581 8,798    
Total liabilities and equity 349,964 368,094    
Committed undisbursed loans 81,624 56,887    
of which the CIRR-system        
Analysis of income and expense [abstract]        
Interest income 2,139 2,302    
Interest expenses (2,346) (2,070)    
Foreign exchange effects 2 1    
Profit before compensation to SEK (205) 233    
Administrative remuneration to SEK (243) (240)    
Operating profit CIRR-system (448) (7)    
Reimbursement to (-) / from (+) the State 448 7    
Financial position for CIRR-system        
Cash and cash equivalents 0 0    
Loans 85,643 101,657    
Derivatives 3,231 3,939    
Other assets 629 217    
Prepaid expenses and accrued revenues 1,772 1,817    
Total assets 91,275 107,630    
Liabilities 89,590 106,093    
Derivatives 194 266    
Accrued expenses and prepaid revenues 1,490 1,271    
Total liabilities and equity 91,275 107,630    
Committed undisbursed loans kr 37,286 kr 42,007    
[1]
3 Cash and cash equivalents include, in this context, cash at banks that can be immediately converted into cash and short-term deposits for which the time to maturity does not exceed three months from trade date. See Note 11.