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 | 
                                                94,599,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                146,668,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                146,668,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                52,068,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,572,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,670,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,572,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,902,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                405,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,442,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,037,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,442,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,210,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,998,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,210,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                212,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                3,030,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,893,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,903,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,862,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,674,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,706,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,685,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,968,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                8,645,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,081,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,188,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,436,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,106,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,132,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,516,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,168,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,615,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |