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 | 
                                                37,198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,874,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,154,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,029,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,955,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,029,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,042,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,613,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,357,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,357,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,701,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,655,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                804,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,489,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                862,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,352,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,352,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                775,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                58,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,801,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,801,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                833,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |