Statement Of Changes In Equity
| Concept | 
                                    
                                        As at 2024-02-29  | 
                            
                                
                                    
                                        2023-06-01 to 2024-02-29  | 
                            
                                
                                    
                                        As at 2023-05-31  | 
                            
                        
|---|---|---|---|
| Statement of changes in equity | |||
| Statement of changes in equity | |||
| Net assets | 
                                        
                                             
                                                8,386,890,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                7,922,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Changes during period | |||
| Profit (loss) | — | 
                                        
                                             
                                                864,792,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — |