Notes - Segment Information, Etc.
| Concept | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||
| Segment information | ||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||
| Sales | ||||||||||
| Revenues from external customers | 
                                                987,178,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                987,178,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                874,545,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,632,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,088,685,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,235,059,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,235,059,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                146,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -76,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                99,719,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                99,719,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -99,719,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |