Employees
| Concept | As at 2025-03-31 | 
|---|---|
| Employees | |
| Metrics related to human capital diversity | |
| Metrics of consolidated subsidiaries | |
| Consolidated subsidiaries | 
                                                ㈱SRA
                                                
                                             | 
| Ratio of female employees in managerial positions | 
                                                0.069
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Ratio of male employees taking childcare leave | |
| All employees | 
                                                0.500
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Differences in wages between male and female employees | |
| All employees | 
                                                0.871
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Regular employees | 
                                                0.719
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Non-regular employees | 
                                                0.841
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |