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 | 
                                                3,829,947,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,130,440,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,146,675,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                153,817,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,130,440,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,570,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,440,171,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                133,927,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,570,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,995,953,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||
| Depreciation | 
                                                89,105,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,731,165,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,019,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                138,235,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,246,992,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,590,339,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,008,180,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,495,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                423,006,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,167,333,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,656,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                40,732,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,838,045,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,582,440,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,214,872,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,623,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,256,013,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,855,037,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                510,940,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                854,584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,401,429,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,451,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |