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Financial Risk Management - Additional Information (Detail)
kr in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Jul. 31, 2024
USD ($)
Jan. 31, 2024
USD ($)
Dec. 31, 2024
SEK (kr)
Dec. 31, 2023
SEK (kr)
Dec. 31, 2022
SEK (kr)
Disclosure Of Financial Risk Management [Line Items]          
Percentage of probability level     99.00%    
Description of Sensitivity analysis     The Company uses the Value at Risk (VaR) methodology to measure foreign exchange and interest rate risks managed by the treasury function. This statistical method expresses the maximum potential loss that can arise with a certain degree of probability during a certain period of time. For the VaR measurement, the Company has chosen a probability level of 99% and a one-day time horizon.    
Percentage of risk at confidence level     99.00%    
Maximum foreign exchange positions     kr 45.0    
Average of value at risk calculated     12.4 kr 15.9  
Sensitivity to interest rate increase of 1 basis point     1.0    
Receivables write-offs     21.0 35.0  
Credit exposure     100.0 400.0  
Proceeds from issuance of borrowings     kr 3,615.0 kr 19,728.0 kr 10,755.0
Free cash flow before merger and acquisition as percent of net sales     16.20% (0.40%)  
Long term borrowings average maturity duration     3 years 7 months 6 days 3 years 2 months 12 days  
Nordic Investment Bank [Member]          
Disclosure Of Financial Risk Management [Line Items]          
Proceeds from issuance of borrowings | $ $ 108        
European Investment Bank [Member]          
Disclosure Of Financial Risk Management [Line Items]          
Proceeds from issuance of borrowings | $   $ 184      
Interest bearing liabilities [member]          
Disclosure Of Financial Risk Management [Line Items]          
Sensitivity to interest rate increase of 1 basis point     kr 8.0    
Trade receivables [member]          
Disclosure Of Financial Risk Management [Line Items]          
Concentrations of risk     45.00% 47.00%  
Bottom of range [Member] | Scenario Forecast [Member]          
Disclosure Of Financial Risk Management [Line Items]          
Free cash flow before merger and acquisition as percent of net sales     9.00%    
Average [member] | Interest bearing liabilities [member]          
Disclosure Of Financial Risk Management [Line Items]          
Sensitivity to interest rate increase of 1 basis point     kr 0.8 kr 1.5  
Top of range [Member]          
Disclosure Of Financial Risk Management [Line Items]          
Sensitivity to interest rate increase of 1 basis point     kr 10.0    
Top of range [Member] | Scenario Forecast [Member]          
Disclosure Of Financial Risk Management [Line Items]          
Free cash flow before merger and acquisition as percent of net sales     12.00%