Employees
| Concept | 
                                    
                                        As at 2024-03-31  | 
                            
                        
|---|---|
| Employees | |
| Metrics related to human capital diversity | |
| Metrics of reporting company | |
| Reporting company | 
                                        
                                             
                                                提出会社
                                                
                                             
                                        
                                     | 
                                
                            
| Ratio of female employees in managerial positions | 
                                        
                                             
                                                0.043
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Ratio of male employees taking childcare leave | |
| Calculated based on provisions of article 71-4 item (1) of ordinance for enforcement of Act on Childcare Leave, Caregiver Leave, and Other Measures for the Welfare of Workers Caring for Children or Other Family Members | |
| All employees | 
                                        
                                             
                                                0.666
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     |