Notes - Consolidated Statement Of Income
| Concept | 
                                    
                                        2023-04-01 to 2024-03-31  | 
                            
                                
                                    
                                        2023-04-01 to 2024-03-31  | 
                            
                                
                                    
                                        2022-04-01 to 2023-03-31  | 
                            
                        
|---|---|---|---|
| Notes - Consolidated statement of income | |||
| Notes - Consolidated statement of income | |||
| Notes regarding amount of revenue from contracts with customers | — | 
                                        
                                             ※1 顧客との契約から生じる収益 売上高については、顧客との契約から生じる収益及びそれ以外の収益を区分して記載しておりません。 顧客との契約から生じる収益の金額は、連結財務諸表「注記事項(収益認識関係)1.収益の分解情報」に 記載しております。  | 
                                
                                    — | 
| Notes regarding write-downs of inventories | — | — | |
| Write-downs of inventories | — | 
                                        
                                             
                                                -42,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                53,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Major components of selling, general and administrative expenses | — | ||
| Research and development expenses included in general and administrative expenses and manufacturing costs for period | — | — | |
| Notes regarding impairment losses | — | — |