Key Financial Data Of Reporting Company
| Concept | 2023-06-01 to 2024-02-29 | As at 2024-02-29 | 2023-12-01 to 2024-02-29 | As at 2023-05-31 | 2022-06-01 to 2023-05-31 | As at 2023-02-28 | 2022-12-01 to 2023-02-28 | 2022-06-01 to 2023-02-28 | 
|---|---|---|---|---|---|---|---|---|
| Key financial data of reporting company | ||||||||
| Business results of reporting company | ||||||||
| Net sales | 
                                                16,143,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                37,509,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                16,226,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Ordinary profit (loss) | 
                                                -399,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                4,624,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -611,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | — | 
                                                28,971,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                29,869,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                26,249,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Total assets | — | 
                                                41,844,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                39,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                39,634,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Basic earnings (loss) per share | 
                                                -26.85
                                                
                                             | — | 
                                                36.12
                                                
                                             | — | 
                                                195.32
                                                
                                             | — | 
                                                19.74
                                                
                                             | 
                                                -37.56
                                                
                                             | 
| Diluted earnings per share |  | — | — | — |  | — | — |  | 
| Equity-to-asset ratio | — | 
                                                0.692
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
                                                0.762
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
                                                0.662
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — |