Employees
| Concept | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 
|---|---|---|---|---|---|---|
| Employees | ||||||
| Metrics related to human capital diversity | ||||||
| Metrics of consolidated subsidiaries | ||||||
| Consolidated subsidiaries | 
                                                サンヴァーテックス㈱
                                                
                                             | 
                                                新潟太陽誘電㈱
                                                
                                             | 
                                                太陽誘電ケミカル
テクノロジー㈱
                                                
                                             | 
                                                福島太陽誘電㈱
                                                
                                             | 
                                                太陽誘電モバイル
テクノロジー㈱
                                                
                                             | 
                                                和歌山太陽誘電㈱
                                                
                                             | 
| Ratio of female employees in managerial positions | 
                                                0.200
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.045
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.067
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.000
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.036
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.000
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Ratio of male employees taking childcare leave | ||||||
| All employees | 
                                                1.33
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.71
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.90
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Differences in wages between male and female employees | ||||||
| All employees | 
                                                0.913
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.797
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.846
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.658
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.740
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.702
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Regular employees | 
                                                0.820
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.796
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.850
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.677
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.731
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.777
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Non-regular employees | 
                                                0.938
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.466
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.524
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.849
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.635
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |