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 | 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 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||||||
| Segment information | ||||||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||||||
| Sales | ||||||||||||||||
| Revenues from external customers | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,605,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,349,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,109,599,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,142,204,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,156,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,156,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                863,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,931,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,472,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,976,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,976,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,217,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,961,750,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                499,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                110,867,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,007,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                615,044,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                615,044,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -615,044,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                512,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,908,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                121,241,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                675,376,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -675,376,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,701,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                637,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |