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 | 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 | 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 | 
                                                740,542,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,501,392,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,165,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                923,460,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,165,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                738,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,010,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,369,666,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                902,356,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,010,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                763,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                956,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -956,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                786,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                380,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |