Notes - Segment Information, Etc.
| Concept | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2023-10-01 to 2024-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 2022-10-01 to 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                4,663,936,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,527,547,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                221,948,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                520,860,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                120,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,319,978,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                205,787,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                407,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                118,305,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,588,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                68,744,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                596,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                81,859,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                576,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,772,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,510,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |