Notes - Segment Information, Etc.
| Concept | 2023-04-01 to 2023-12-31 | 2023-04-01 to 2023-12-31 | 2023-04-01 to 2023-12-31 | 2022-04-01 to 2022-12-31 | 2022-04-01 to 2022-12-31 | 2022-04-01 to 2022-12-31 | 
|---|---|---|---|---|---|---|
| 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 | 
                                                33,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,950,794,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,984,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,563,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,651,005,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,687,568,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |