Notes - Quarterly Consolidated Balance Sheet
| Concept | 
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        As at 2024-06-30  | 
                            
                        
|---|---|---|
| Notes - Quarterly consolidated balance sheet | ||
| Notes - Quarterly consolidated balance sheet | ||
| Notes regarding allowances directly deducted from balances of assets | — | |
| Notes regarding guarantee obligations | — | |
| Notes regarding trade notes receivable discounted or transferred by endorsement | — | |
| Discounted trade notes receivable | 
                                        
                                             
                                                7,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                6,975,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     |