Notes - Segment Information, Etc.
| Concept | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 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 | 
                                                3,452,186,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,115,948,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,452,186,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,352,458,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                983,779,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                843,244,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                266,537,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                796,763,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,906,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,906,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                124,853,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                114,562,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -124,853,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,291,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                85,845,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -94,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,772,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |