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 | 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 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                266,337,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                641,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                294,724,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,038,121,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,945,613,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,240,337,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                608,491,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                256,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                889,182,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,035,841,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                282,092,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,753,748,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |