Employees
| Concept | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 
|---|---|---|---|---|
| Employees | ||||
| Metrics related to human capital diversity | ||||
| Metrics of consolidated subsidiaries | ||||
| Consolidated subsidiaries | 
                                                ひろぎん証券株式会社
                                                
                                             | 
                                                ひろぎんITソリューションズ株式会社
                                                
                                             | 
                                                株式会社広島銀行
                                                
                                             | 
                                                ひろぎんリース株式会社
                                                
                                             | 
| Ratio of female employees in managerial positions | 
                                                0.102
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.133
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.127
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.031
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Ratio of male employees taking childcare leave | ||||
| All employees | 
                                                1.000
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1.000
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1.012
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                1.000
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Differences in wages between male and female employees | ||||
| All employees | 
                                                0.679
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.590
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.422
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.544
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Regular employees | 
                                                0.661
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.888
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.582
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.657
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Non-regular employees | 
                                                0.618
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.558
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.572
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.380
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |