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 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 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 reporting company | |||||||||||||||||||
| Number of employees of reporting company | |||||||||||||||||||
| Number of employees | 
                                                1,777
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                271
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                526
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1,811
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                7,563
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1,687
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                2,693
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1,811
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                85
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                734
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1,554
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                7,882
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                2,243
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                2,216
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                8,028
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                9,849
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                2,058
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                10,897
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                3,318
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |