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 | 
                                                4,423,849,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,945,049,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,676,018,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,676,018,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,307,119,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,857,756,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,855,682,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,299,610,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,698,314,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,855,682,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                458,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                459,898,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,002,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -459,898,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                400,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -402,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                402,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |