Notes - Segment Information, Etc.
| Concept | 2023-07-01 to 2023-12-31 | 2023-07-01 to 2023-12-31 | 2023-07-01 to 2023-12-31 | 2023-07-01 to 2023-12-31 | 2023-07-01 to 2023-12-31 | 2023-07-01 to 2023-12-31 | 2023-07-01 to 2023-12-31 | 2022-07-01 to 2022-12-31 | 2022-07-01 to 2022-12-31 | 2022-07-01 to 2022-12-31 | 2022-07-01 to 2022-12-31 | 2022-07-01 to 2022-12-31 | 2022-07-01 to 2022-12-31 | 2022-07-01 to 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                619,006,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,717,116,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,761,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,632,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,101,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,101,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,662,589,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,662,589,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                730,387,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,825,116,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,103,742,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,342,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                267,128,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                225,853,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -417,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                166,950,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                242,387,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -242,387,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                233,334,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -233,334,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                287,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,915,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -193,264,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                137,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |