Employees
| Concept | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2024-03-31 | As at 2023-03-31 | As at 2022-03-31 | As at 2021-03-31 | 
|---|---|---|---|---|---|---|---|
| Employees | |||||||
| Information about group | |||||||
| Number of employees of group | |||||||
| Number of employees | 
                                                564
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                54
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                633
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                614
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                572
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                552
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                541
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |