Employees
| Concept | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2022-03-31 | As at 2022-03-31 | As at 2021-03-31 | As at 2021-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Employees | |||||||||||||
| Information about group | |||||||||||||
| Number of employees of group | |||||||||||||
| Number of employees | 
                                                984
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                395
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                757
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1,379
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                757
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                766
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1,385
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1,363
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                752
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                738
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1,284
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1,269
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                754
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |