Notes - Segment Information, Etc.
| Concept | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||
| Segment information | ||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||
| Sales | ||||||||||
| Revenues from external customers | 
                                                751,777,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                751,777,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                313,826,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                437,950,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                288,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                401,962,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                690,462,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                690,462,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -53,475,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,475,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,463,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,559,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,571,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -49,571,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |