Key Financial Data Of Reporting Company
| Concept | As at 2024-09-30 | 2024-04-01 to 2024-09-30 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2023-09-30 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|
| Key financial data of reporting company | ||||||
| Business results of reporting company | ||||||
| Net sales | — | 
                                                32,371,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                62,843,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                31,648,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Ordinary profit (loss) | — | 
                                                3,312,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,522,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,096,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                64,192,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                61,930,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                58,621,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Total assets | 
                                                88,263,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                90,745,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,920,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Basic earnings (loss) per share | — | 
                                                90.36
                                                
                                             | 
                                                266.51
                                                
                                             | — | — | 
                                                145.93
                                                
                                             | 
| Diluted earnings per share | — |  |  | — | — |  | 
| Equity-to-asset ratio | 
                                                0.727
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | 
                                                0.682
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.638
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                1,159,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,486,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,097,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) investing activities | — | 
                                                -1,783,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,706,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,382,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) financing activities | — | 
                                                -2,406,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,943,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -2,539,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and cash equivalents | 
                                                13,705,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                16,738,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,446,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |