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 | 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 and profit (loss) for each reportable segment | ||||||||||||
| Sales | ||||||||||||
| Revenues from external customers | 
                                                769,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,814,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,603,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,340,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,869,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,584,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,675,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,036,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,585,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,990,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                692,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,297,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |