Disclosure Of Non-Current Assets Held For Sale And Discontinued Operations [Text Block]
| Concept | 2023-01-01 to 2023-12-31 | 2022-01-01 to 2022-12-31 | 
|---|---|---|
| Disclosure of non-current assets held for sale and discontinued operations [text block] | — | — | 
| Disclosure of analysis of single amount of discontinued operations [text block] | — | — | 
| Disclosure of analysis of single amount of discontinued operations [abstract] | ||
| Disclosure of analysis of single amount of discontinued operations [line items] | ||
| Profit (loss) before tax | 
                                                226  670
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                308  997
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
| Revenue | 
                                                3 431 455
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                3 508 706
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
| Cash flows from continuing and discontinued operations [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Cash flows from (used in) operating activities | 
                                                519 197
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                128 433
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
| Cash flows from (used in) investing activities [abstract] | ||
| Cash flows from (used in) investing activities | 
                                                313  278
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                140  012
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
| Cash flows from (used in) financing activities [abstract] | ||
| Cash flows from (used in) financing activities | 
                                                69  890
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                169  891
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             |