Disclosure Of Property, Plant And Equipment [Text Block]
| Concept | As at 2024-12-31 | As at 2023-12-31 | 
|---|---|---|
| Disclosure of property, plant and equipment [text block] | — | — | 
| Disclosure of detailed information about property, plant and equipment [text block] | — | — | 
| Disclosure of detailed information about property, plant and equipment [abstract] | ||
| Disclosure of detailed information about property, plant and equipment [line items] | ||
| Reconciliation of changes in property, plant and equipment [abstract] | ||
| Property, plant and equipment | 
                                                146,000,000
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                148,000,000
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             |