Disclosure Of Cash Flow Statement [Text Block]
| Concept | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2022-12-31 | As at 2021-12-31 | 
|---|---|---|---|---|
| Disclosure of cash flow statement [text block] | — |  | — | — | 
| Description of accounting policy for determining components of cash and cash equivalents [text block] | — |  | — | — | 
| Cash and cash equivalents if different from statement of financial position [abstract] | ||||
| Cash and cash equivalents | 
                                                308  936
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | 
                                                178  334
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
                                                345  864
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             |