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 | 
                                                310,032,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,268,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                227,091,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,083,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,589,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                310,032,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,010,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                205,922,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,173,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,665,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                296,771,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                296,771,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                2,021,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                905,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,033,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                58,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,021,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                598,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,592,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,261,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,261,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |