v3.26.1
Interest in Joint Venture (Details) - SEK (kr)
kr in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
IfrsStatementLineItems [Line Items]    
Comprehensive Income/loss kr (1,657,672) kr (998,331)
Polar Charge A B [Member]    
IfrsStatementLineItems [Line Items]    
Comprehensive Income/loss 1,430 282
Interest in Joint Venture kr 13,027 kr 11,597