Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 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 | 
                                                466,884,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                654,294,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,121,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,125,748,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                546,653,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                669,869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,221,092,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,216,523,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,053,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,053,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |