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 | 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 | 2023-03-01 to 2023-05-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                1,839,386,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,086,659,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,086,659,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,086,659,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,247,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,842,850,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,842,850,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,119,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,842,850,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,723,055,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |