Statement Of Cash Flows [Abstract]
| Concept | 2023-01-01 to 2023-12-31 | 2022-01-01 to 2022-12-31 | 
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Cash flows from (used in) operations before changes in working capital | 
                                                320  049
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                335 728
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
| Adjustments for decrease (increase) in trade and other receivables | 
                                                149  950
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                57 972
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
| Adjustments for increase (decrease) in trade and other payables | 
                                                19  884
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                66  352
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
| Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss, inventories | 
                                                1  629
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                4  577
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
| Income taxes paid, classified as operating activities | 
                                                71  276
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                111 739
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
| Cash flows from (used in) financing activities [abstract] | ||
| Dividends paid to equity holders of parent, classified as financing activities | 
                                                102  333
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                101  474
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
| Cash flows from (used in) increase (decrease) in current borrowings | 
                                                987,000
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                –
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             |