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 | 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 | 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 | 
                                                360,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                532,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,674,027,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,066,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,702,971,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,545,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,882,495,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,128,591,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,205,176,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                436,485,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,423,594,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                720,802,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,816,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,198,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,910,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,992,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,563,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,270,428,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,282,894,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,260,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,124,683,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,930,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,198,584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |