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 | — | 
                                                29,081,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,056,247,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                27,553,492,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Ordinary profit (loss) | — | 
                                                1,645,465,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,085,761,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,282,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                27,389,445,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                25,714,576,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,046,727,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Total assets | 
                                                44,432,876,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                45,770,852,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,776,768,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Basic earnings (loss) per share | — | 
                                                255.03
                                                
                                             | 
                                                335.66
                                                
                                             | — | — | 
                                                90.13
                                                
                                             | 
| Diluted earnings per share | — | 
                                                252.27
                                                
                                             | 
                                                324.08
                                                
                                             | — | — | 
                                                89.88
                                                
                                             | 
| Equity-to-asset ratio | 
                                                0.616
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | 
                                                0.562
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.581
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                -3,869,515,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,006,146,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,359,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) investing activities | — | 
                                                296,998,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -767,729,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,079,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) financing activities | — | 
                                                1,276,398,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,224,720,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,273,277,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and cash equivalents | 
                                                8,799,109,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                10,661,321,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,666,924,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |