Notes - Segment Information, Etc.
| Concept | 2023-11-01 to 2024-10-31 | 2023-11-01 to 2024-10-31 | 2023-11-01 to 2024-10-31 | 2023-11-01 to 2024-10-31 | 2023-11-01 to 2024-10-31 | 2023-11-01 to 2024-10-31 | 2023-04-01 to 2023-10-31 | 2023-04-01 to 2023-10-31 | 2023-04-01 to 2023-10-31 | 2023-04-01 to 2023-10-31 | 2023-04-01 to 2023-10-31 | 2023-04-01 to 2023-10-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                2,058,336,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,161,867,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                103,531,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,161,867,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,161,867,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,065,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,025,381,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                978,315,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,025,381,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,025,381,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,650,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,650,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,650,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,650,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,625,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,625,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,625,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,625,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||
| Depreciation | 
                                                2,356,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,995,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                146,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,492,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,502,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,502,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                108,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,434,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,326,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,434,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,150,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,715,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                5,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,184,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,859,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                260,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,352,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,695,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |