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 | 
                                                5,591,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                90,297,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,888,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,351,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,888,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                78,945,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,818,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,659,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,005,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,005,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                77,527,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,345,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                11,132,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                952,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                150,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -12,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                802,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                147,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,134,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -12,211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,929,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,077,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                85,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,445,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,513,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                414,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,530,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -17,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,031,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                267,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                93,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,184,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,823,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,090,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |