Key Financial Data Of Group
| 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 group | ||||||
| Business results of group | ||||||
| Net sales | — | 
                                                406,708,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                832,595,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                403,261,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Ordinary profit (loss) | — | 
                                                19,356,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                358,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                25,401,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Profit (loss) attributable to owners of parent | — | 
                                                12,772,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,830,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                12,588,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income | — | 
                                                16,695,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,236,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                15,661,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                395,077,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                387,885,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                404,582,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Total assets | 
                                                804,925,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                792,296,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                754,286,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Basic earnings (loss) per share | — | 
                                                52.87
                                                
                                             | 
                                                -32.48
                                                
                                             | — | — | 
                                                52.29
                                                
                                             | 
| Diluted earnings per share | — | 
                                                52.84
                                                
                                             |  | — | — | 
                                                52.27
                                                
                                             | 
| Equity-to-asset ratio | 
                                                0.489
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | 
                                                0.487
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.535
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                58,307,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,090,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                16,277,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) investing activities | — | 
                                                -8,207,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -20,201,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -13,309,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) financing activities | — | 
                                                -14,722,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,894,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -11,636,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and cash equivalents | 
                                                356,130,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                324,507,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                333,682,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |