Notes - Segment Information, Etc.
| Concept | 2024-03-01 to 2024-08-31 | 2024-03-01 to 2024-08-31 | 2024-03-01 to 2024-08-31 | 2024-03-01 to 2024-08-31 | 2024-03-01 to 2024-08-31 | 2024-03-01 to 2024-08-31 | 2024-03-01 to 2024-08-31 | 2024-03-01 to 2024-08-31 | 2023-03-01 to 2023-08-31 | 2023-03-01 to 2023-08-31 | 2023-03-01 to 2023-08-31 | 2023-03-01 to 2023-08-31 | 2023-03-01 to 2023-08-31 | 2023-03-01 to 2023-08-31 | 2023-03-01 to 2023-08-31 | 2023-03-01 to 2023-08-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                18,033,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,656,889,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                934,245,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                865,396,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                839,213,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,638,856,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,656,889,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,360,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,846,530,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,832,170,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,846,530,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                987,180,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                579,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                265,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,050,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,050,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,050,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,050,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |