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Provisions - Additional Information (Detail)
kr in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2023
SEK (kr)
Dec. 31, 2022
SEK (kr)
Jun. 30, 2023
SEK (kr)
Jun. 30, 2023
USD ($)
Dec. 31, 2021
SEK (kr)
Disclosure of Provisions [line items]          
Actual cash outlays kr 8,566 kr 4,573      
Non-current provisions 4,927 3,959      
Provisions 11,706 11,588     kr 9,504
Additional provisions, other provisions 10,477 6,785      
Restructuring [member]          
Disclosure of Provisions [line items]          
Actual cash outlays 2,866 338      
Non-current provisions 855 221      
Provisions kr 3,720 669     639
Description of expected timing of outflows, other provisions 1 year        
Utilization of provisions kr 2,900        
Additional provisions, other provisions 6,082 400      
Restructuring [member] | United States Department Of Justice [Member]          
Disclosure of Provisions [line items]          
Prior year fine paid     kr 2,200 $ 206.7  
Customer Related Provision [member]          
Disclosure of Provisions [line items]          
Actual cash outlays 541 824      
Non-current provisions 1,873 1,878      
Provisions kr 2,857 3,093     3,440
Description of expected timing of outflows, other provisions 5 years        
Additional provisions, other provisions kr 481 1,024      
Suppliers Related Provision [member]          
Disclosure of Provisions [line items]          
Actual cash outlays 138 144      
Non-current provisions 608 524      
Provisions kr 954 722     1,231
Description of expected timing of outflows, other provisions 2 years        
Additional provisions, other provisions kr 849 561      
Warranty [member]          
Disclosure of Provisions [line items]          
Actual cash outlays 547 646      
Non-current provisions 251 106      
Provisions kr 956 678     1,074
Description of expected timing of outflows, other provisions 1 year        
Additional provisions, other provisions kr 831 368      
Other [member]          
Disclosure of Provisions [line items]          
Actual cash outlays 3,792 1,724      
Non-current provisions 658 887      
Provisions 1,635 5,441     1,529
Additional provisions, other provisions 824 4,129      
Provision for Share Based Payments [member]          
Disclosure of Provisions [line items]          
Actual cash outlays 682 897      
Non-current provisions 682 343      
Provisions kr 1,584 985     kr 1,591
Description of expected timing of outflows, other provisions 3 years        
Additional provisions, other provisions kr 1,410 kr 303