Notes - Segment Information, Etc.
| Concept | 2024-07-01 to 2024-12-31 | 2024-07-01 to 2024-12-31 | 2024-07-01 to 2024-12-31 | 2024-07-01 to 2024-12-31 | 2024-07-01 to 2024-12-31 | 2023-07-01 to 2023-12-31 | 2023-07-01 to 2023-12-31 | 2023-07-01 to 2023-12-31 | 2023-07-01 to 2023-12-31 | 2023-07-01 to 2023-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                320,110,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,286,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,606,790,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,606,790,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                271,503,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,547,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,819,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,819,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                37,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -37,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,563,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,563,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -18,563,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |