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 | 
                                                16,161,915,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,077,385,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,084,530,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,161,915,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,609,719,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,868,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,478,155,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,478,155,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                941,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                777,784,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                163,573,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -941,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,044,131,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                109,893,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,154,024,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,154,024,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |