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 | 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 | 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 | 
                                                993,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,818,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,724,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,811,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,811,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                795,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,160,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,138,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,414,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,341,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                763,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,330,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,348,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,341,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,485,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,855,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                52,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                747,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                582,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,394,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                928,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,394,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                93,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                118,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,276,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |