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 | 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 | 
                                                42,567,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,254,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,645,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                59,899,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,078,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,768,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,729,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,609,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                195,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                195,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |