Key Financial Data Of Reporting Company
| Concept | As at 2023-07-31 | 2023-05-01 to 2023-07-31 | 2022-05-01 to 2023-04-30 | As at 2023-04-30 | 2022-05-01 to 2022-07-31 | As at 2022-07-31 | 
|---|---|---|---|---|---|---|
| Key financial data of reporting company | ||||||
| Business results of reporting company | ||||||
| Net sales | — | 
                                                3,027,122,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,213,880,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,204,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Ordinary profit (loss) | — | 
                                                405,345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,102,678,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                379,378,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net assets | 
                                                14,788,038,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                14,456,765,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                13,533,062,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Total assets | 
                                                17,446,828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                17,139,298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                16,074,647,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Basic earnings (loss) per share | — | 
                                                680.29
                                                
                                             | 
                                                804.45
                                                
                                             | — | 
                                                165.83
                                                
                                             | — | 
| Diluted earnings per share | — |  |  | — |  | — | 
| Equity-to-asset ratio | 
                                                0.848
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | 
                                                0.843
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
                                                0.842
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |