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 | 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, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||
| Sales | ||||||||||
| Revenues from external customers | 
                                                49,582,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                586,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,977,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,605,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,265,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,093,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,627,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,268,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,533,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                2,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                234,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                236,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                188,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                191,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                2,160,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                454,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,706,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,161,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                449,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,317,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,867,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,316,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                1,243,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                114,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,128,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,337,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                213,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,073,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                813,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,027,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |