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Interest-Bearing Liabilities - Additional Information (Detail) - SEK (kr)
kr in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure Of Interest Bearing Liabilities [Line Items]    
Interest-bearing liabilities kr 46,873 kr 32,930
Commercial papers [member]    
Disclosure Of Interest Bearing Liabilities [Line Items]    
Interest-bearing liabilities kr 2,014 kr 0
Weighted average yield percent 4.633%  
European Investment Bank credit facility [member]    
Disclosure Of Interest Bearing Liabilities [Line Items]    
Weighted average interest rate of long term debt 5.15% 2.45%