Employees
| Concept | 
                                    
                                        As at 2025-03-31  | 
                            
                                
                                    
                                        As at 2025-03-31  | 
                            
                                
                                    
                                        As at 2025-03-31  | 
                            
                        
|---|---|---|---|
| Employees | |||
| Metrics related to human capital diversity | |||
| Metrics of consolidated subsidiaries | |||
| Consolidated subsidiaries | 
                                        
                                             
                                                トーエイ株式会社
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                株式会社トライフ
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                株式会社貴藤
                                                
                                             
                                        
                                     | 
                                
                            
| Ratio of female employees in managerial positions | 
                                        
                                             
                                                0.043
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.143
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     |