Notes - Consolidated Balance Sheet
| Concept | 
                                    
                                        As at 2023-09-30  | 
                            
                                
                                    
                                        As at 2022-09-30  | 
                            
                        
|---|---|---|
| Notes - Consolidated balance sheet | ||
| Notes - Consolidated balance sheet | ||
| Notes regarding amounts of notes and accounts receivable - trade and contract assets | 
                                        
                                             ※1 受取手形及び売掛金のうち、顧客との契約から生じた債権の金額並びに流動負債のその他のうち、契約負債の金額は、連結財務諸表「注記事項(収益認識関係)3 ①契約資産及び契約負債の残高等」に記載しております。 
  | 
                                
                                    — | 
| Notes regarding trade notes receivable discounted or transferred by endorsement | — | |
| Trade notes receivable transferred by endorsement | 
                                        
                                             
                                                1,146,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1,589,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Notes regarding promissory notes due on balance sheet date | — |