Notes - Segment Information, Etc.
| Concept | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 
|---|---|---|---|---|---|---|
| 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 | 
                                                2,614,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,911,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,526,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                809,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,818,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,627,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                18,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                413,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                431,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                385,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                420,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||
| Depreciation | 
                                                37,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                914,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                951,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                929,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                934,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                22,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,599,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,621,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                562,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                616,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |