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 | 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 | 
                                                9,949,906,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,814,303,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,066,147,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,814,303,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,798,248,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,972,578,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,604,370,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,408,502,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                223,290,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,604,370,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                136,892,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                146,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -146,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,192,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -95,192,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,192,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |