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 and profit (loss) for each reportable segment | ||||||||||||||
| Sales | ||||||||||||||
| Revenues from external customers | 
                                                51,753,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,368,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,357,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,753,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,804,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,223,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,529,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,081,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,076,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,105,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,792,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,792,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                3,110,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,293,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                726,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,110,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,295,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                75,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                305,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,677,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,677,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |