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 | 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 | 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 | 
                                                120,815,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,719,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                226,184,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,649,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                191,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                226,375,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,934,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                188,385,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                185,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,602,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                188,571,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,848,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||
| Depreciation | 
                                                3,100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                881,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,717,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,736,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,717,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,215,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,586,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,578,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,586,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                792,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                4,664,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                963,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,924,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,296,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,924,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,591,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,494,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,092,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,495,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                810,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |