Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                7,734,761,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,968,062,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,968,062,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                233,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,511,870,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                318,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,830,120,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,830,120,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                1,077,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -68,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,531,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,432,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -56,432,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |