Employees
| Concept | As at 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | As at 2023-02-28 | As at 2023-02-28 | As at 2022-02-28 | As at 2022-02-28 | As at 2021-02-28 | As at 2021-02-28 | As at 2020-02-29 | As at 2020-02-29 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Employees | |||||||||||||||||
| Information about group | |||||||||||||||||
| Number of employees of group | |||||||||||||||||
| Number of employees | 
                                                116
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                29
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                116
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                352
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                145
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                50
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                547
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                28
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                548
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                137
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                147
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                536
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                584
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                152
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                158
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                644
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Average number of temporary employees | 
                                                139
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                44
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                11
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                139
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                3,037
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                462
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                892
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                4,079
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                279
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                3,980
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                444
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                427
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                3,781
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                4,087
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                424
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                480
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                5,136
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |