Notes - Segment Information, Etc.
| Concept | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||
| Segment information | ||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||
| Sales | ||||||||||||
| Revenues from external customers | 
                                                9,722,408,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,722,408,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,088,681,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,740,863,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,892,862,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,384,331,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,954,330,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,658,439,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,319,776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,658,439,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                58,163,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,960,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -58,163,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,716,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -53,513,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,376,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                441,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,694,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,513,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |