Notes - Segment Information, Etc.
| Concept | 2024-03-01 to 2024-05-31 | 2024-03-01 to 2024-05-31 | 2024-03-01 to 2024-05-31 | 2024-03-01 to 2024-05-31 | 2024-03-01 to 2024-05-31 | 2024-03-01 to 2024-05-31 | 2023-03-01 to 2023-05-31 | 2023-03-01 to 2023-05-31 | 2023-03-01 to 2023-05-31 | 2023-03-01 to 2023-05-31 | 2023-03-01 to 2023-05-31 | 2023-03-01 to 2023-05-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||
| Segment information | ||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||
| Sales | ||||||||||||
| Revenues from external customers | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                586,699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                82,609,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,956,885,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,626,193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,626,193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,390,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                575,022,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                73,128,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,742,747,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,390,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |