Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                557,182,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,619,199,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,589,009,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                770,498,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,205,563,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,976,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,440,170,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,033,599,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,530,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,780,170,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                527,640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,125,586,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                750,265,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,093,344,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |