Disclosure Of First-Time Adoption [Text Block]
| Concept | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of first-time adoption [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of comparative information prepared under previous GAAP [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of comparative information prepared under previous GAAP [abstract] | |||||||||||||||||||||||||
| Disclosure of comparative information prepared under previous GAAP [line items] | |||||||||||||||||||||||||
| Equity | — | 
                                                35 645
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | 
                                                62 032
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                141,000
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | — | — | 
                                                65 922
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                92 168
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | 
                                                116 760
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                36 234
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | — | — | 
                                                22 557
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                192,000
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | 
                                                58 161
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                242 440
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                162 008
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                22 557
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                286,000
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                58 161
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
| Comprehensive income | 
                                                -
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | 
                                                51,000
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | — | 
                                                71 879
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                71 828
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | — | 
                                                125 680
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | — | 
                                                125 774
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                94,000
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | — | 
                                                -
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | — | — | — | — | — | 
| Profit (loss) | — | — | — | — | — | 
                                                71 879
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                71 879
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | — | — | 
                                                125 774
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | — | 
                                                125 774
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — |