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 | 2023-10-01 to 2024-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||
| Segment information | ||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||
| Sales | ||||||||||||
| Revenues from external customers | 
                                                130,722,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,792,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,097,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                925,640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,095,508,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                118,118,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                721,041,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                962,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                866,354,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                867,316,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |