Disclosure Of Financial Instruments [Text Block]
| Concept | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2023-12-31 | 
|---|---|---|---|
| Disclosure of financial instruments [text block] | — |  | — | 
| Description of accounting policy for financial instruments [text block] | — |  | — | 
| Disclosure of financial assets [text block] | — | — | — | 
| Disclosure of financial assets [abstract] | |||
| Disclosure of financial assets [line items] | |||
| Financial assets | 
                                                12 340
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | — | 
                                                6  701
                                                
                                                    
                                                        SEK
                                                    
                                                
                                             | 
| Disclosure of credit risk [text block] | — | 
                                                Kreditrisk
                                                
                                             | — | 
| Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [text block] | — | — | — | 
| Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [abstract] | |||
| Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items] | |||
| Disclosure of credit risk exposure [text block] | — | — | — | 
| Disclosure of credit risk exposure [abstract] | |||
| Disclosure of credit risk exposure [line items] | |||
| Disclosure of provision matrix [text block] | — | — | — | 
| Disclosure of provision matrix [abstract] | |||
| Disclosure of provision matrix [line items] | |||
| Disclosure of financial assets that are either past due or impaired [text block] | — | — | — | 
| Disclosure of financial assets that are either past due or impaired [abstract] | |||
| Disclosure of financial assets that are either past due or impaired [line items] | |||
| Disclosure of financial instruments by type of interest rate [text block] | — | — | — | 
| Disclosure of financial instruments by type of interest rate [abstract] | |||
| Disclosure of financial instruments by type of interest rate [line items] |