Notes - Segment Information, Etc.
| Concept | 2024-01-01 to 2024-06-30 | 2024-01-01 to 2024-06-30 | 2024-01-01 to 2024-06-30 | 2024-01-01 to 2024-06-30 | 2024-01-01 to 2024-06-30 | 2023-01-01 to 2023-06-30 | 2023-01-01 to 2023-06-30 | 2023-01-01 to 2023-06-30 | 2023-01-01 to 2023-06-30 | 2023-01-01 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 | 
                                                5,050,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,544,356,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                505,695,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,050,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,240,760,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                589,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,829,772,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,829,772,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                974,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                974,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -974,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |