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 | 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 | 2022-04-01 to 2022-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                3,481,599,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                422,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                306,467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,210,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,210,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                277,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                371,526,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,812,458,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,461,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,461,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                34,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                501,158,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                535,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -535,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                435,660,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,175,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -472,835,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                472,835,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |