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, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||||
| Sales | ||||||||||||
| Revenues from external customers | 
                                                5,899,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                175,575,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                175,575,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                156,569,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,105,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,773,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                166,310,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,931,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                147,605,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                166,310,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,586,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,586,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,464,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,713,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,728,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,728,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |