Notes - Segment Information, Etc.
| Concept | 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 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||
| Segment information | ||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||
| Sales | ||||||||||
| Revenues from external customers | 
                                                7,650,138,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,076,504,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,726,643,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,726,643,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,095,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,660,942,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                434,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,095,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                58,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,586,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -68,732,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,732,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -15,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |