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 | 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 | 
                                                449,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,271,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,649,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,099,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,582,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                586,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,977,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,605,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                256,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                258,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                234,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                236,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,699,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                408,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,108,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,108,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,160,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                454,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,706,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,161,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                68,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                838,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,086,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,154,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,243,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                114,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,128,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,337,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |