Key Financial Data Of Reporting Company
| Concept | 2023-04-01 to 2023-12-31 | As at 2023-12-31 | 2023-10-01 to 2023-12-31 | 
|---|---|---|---|
| Key financial data of reporting company | |||
| Business results of reporting company | |||
| Net sales | 
                                                23,492,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Ordinary profit (loss) | 
                                                2,428,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net assets | — | 
                                                12,645,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Total assets | — | 
                                                18,447,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Basic earnings (loss) per share | 
                                                31.57
                                                
                                             | — | 
                                                14.99
                                                
                                             | 
| Diluted earnings per share | 
                                                31.24
                                                
                                             | — | — | 
| Equity-to-asset ratio | — | 
                                                0.6685
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — |