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 | 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 | 
                                                1,105,763,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,289,548,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                261,081,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,395,311,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,656,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,656,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                851,361,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,782,580,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,884,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,884,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,633,941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -91,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                73,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -73,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                73,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |