Notes - Segment Information, Etc.
| Concept | 2023-07-01 to 2024-06-30 | 2023-07-01 to 2024-06-30 | 2023-07-01 to 2024-06-30 | 2023-07-01 to 2024-06-30 | 2023-07-01 to 2024-06-30 | 2022-07-01 to 2023-06-30 | 2022-07-01 to 2023-06-30 | 2022-07-01 to 2023-06-30 | 2022-07-01 to 2023-06-30 | 2022-07-01 to 2023-06-30 | 
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                22,134,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,399,855,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,734,289,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,134,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,163,624,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,889,177,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,052,802,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,052,802,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,721,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,721,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,721,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,834,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,834,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,834,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                726,051,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                619,452,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                102,845,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,753,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                722,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                597,388,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                688,518,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                692,593,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                1,348,363,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                904,294,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                443,769,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,348,063,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                360,378,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                410,813,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                412,163,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |