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 | 
                                                30,645,058,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,375,953,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,644,611,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,962,266,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,306,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,222,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,238,771,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,284,921,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,051,746,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,970,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,886,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                444,447,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,434,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                439,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,434,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                550,008,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,146,229,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,364,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,257,737,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,146,229,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                524,141,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||
| Depreciation | 
                                                378,310,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                104,754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                124,562,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,887,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                253,748,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,556,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                301,314,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,574,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,482,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                152,758,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,499,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                983,455,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,332,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                899,155,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                539,767,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,074,930,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                500,978,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                535,163,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,220,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |