Notes - Balance Sheet
| Concept | 
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        As at 2024-06-30  | 
                            
                        
|---|---|---|
| Notes - Balance sheet | ||
| Notes - Balance sheet | ||
| Notes regarding trade notes receivable discounted or transferred by endorsement | — | |
| Trade notes receivable transferred by endorsement | 
                                        
                                             
                                                49,263,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                115,999,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Notes regarding promissory notes due on balance sheet date | — |