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 | 
                                                6,884,654,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,686,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,571,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,571,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,650,138,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,076,504,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,726,643,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,726,643,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                55,974,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,800,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,775,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -74,775,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                58,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,586,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -68,732,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,732,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |