Notes - Segment Information, Etc.
| Concept | 2023-07-01 to 2024-03-31 | 2023-07-01 to 2024-03-31 | 2023-07-01 to 2024-03-31 | 2023-07-01 to 2024-03-31 | 2023-07-01 to 2024-03-31 | 2022-07-01 to 2023-03-31 | 2022-07-01 to 2023-03-31 | 2022-07-01 to 2023-03-31 | 2022-07-01 to 2023-03-31 | 2022-07-01 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 | 
                                                4,654,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,654,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                524,857,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,129,880,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                512,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,611,207,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,611,207,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,098,575,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |