Notes - Segment Information, Etc.
| Concept | 2024-10-01 to 2025-03-31 | 2024-10-01 to 2025-03-31 | 2024-10-01 to 2025-03-31 | 2024-10-01 to 2025-03-31 | 2024-10-01 to 2025-03-31 | 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 | 2023-10-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||
| Segment information | ||||||||||
| Disclosure of sales, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||
| Sales | ||||||||||
| Revenues from external customers | 
                                                965,238,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                965,238,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                150,830,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                814,407,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                804,896,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                149,816,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                804,896,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                655,080,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,473,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,973,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,473,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |