Notes - Segment Information, Etc.
| Concept | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 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 | 2023-01-01 to 2023-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||
| Segment information | ||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||
| Sales | ||||||||||||
| Revenues from external customers | 
                                                2,789,601,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,002,460,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                870,377,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,662,439,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,662,439,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,154,283,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,369,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                624,235,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,160,817,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,154,283,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                120,756,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,923,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,360,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,168,340,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,304,020,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,355,381,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,284,807,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,954,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,144,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                102,367,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,327,774,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |