Employees
| Concept | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 
|---|---|---|---|---|
| Employees | ||||
| Metrics related to human capital diversity | ||||
| Metrics of consolidated subsidiaries | ||||
| Consolidated subsidiaries | 
                                                ヒューマンライフケア㈱
                                                
                                             | 
                                                ヒューマンスターチャイルド㈱
                                                
                                             | 
                                                ヒューマンリソシア㈱
                                                
                                             | 
                                                ヒューマンアカデミー㈱
                                                
                                             | 
| Ratio of female employees in managerial positions | 
                                                0.419
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.827
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.257
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.235
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Ratio of male employees taking childcare leave | ||||
| All employees | 
                                                0.500
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.000
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.515
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.200
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Differences in wages between male and female employees | ||||
| All employees | 
                                                0.841
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.730
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.717
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.707
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Regular employees | 
                                                0.835
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.900
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.692
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.816
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Non-regular employees | 
                                                1.182
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.924
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.839
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.819
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |