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, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||||
| Sales | ||||||||||||
| Revenues from external customers | 
                                                88,475,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,325,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,475,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,835,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,313,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,607,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                71,426,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                71,426,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,032,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,786,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||
| Depreciation | 
                                                3,082,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                370,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,014,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                368,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                345,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,905,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,961,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,070,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                489,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                5,956,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                558,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,853,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                102,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,708,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                586,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                445,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,233,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,299,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,029,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                757,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |