Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                801,811,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                459,558,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                342,253,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                801,811,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                437,950,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                751,777,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                751,777,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                313,826,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,775,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,789,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -57,789,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,463,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -53,475,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,475,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                17,282,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,296,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,986,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,282,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,657,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,012,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,012,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,355,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments in entities accounted for using equity method | 
                                                33,810,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,810,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,810,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,390,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,390,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,390,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                35,804,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,209,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,594,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,804,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,351,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,819,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |