Notes - Segment Information, Etc.
| Concept | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 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 | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,593,719,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,593,719,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                354,482,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,239,236,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,089,942,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,814,274,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,814,274,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                724,331,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |