Shareholdings
| Concept | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 
|---|---|---|---|---|---|---|
| Shareholdings | ||||||
| Reporting company | ||||||
| Details of specified investment shares held for purposes other than pure investment | ||||||
| Issue | 
                                                ㈱山口フィナンシャルグループ
                                                
                                             | 
                                                オイシックス・ラ・大地㈱
                                                
                                             | 
                                                ㈱イズミ
                                                
                                             | — | — | — | 
| Number of shares | 
                                                30,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                31,320
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                30,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                31,320
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Carrying amount | 
                                                52,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,031,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,238,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,022,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,809,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Purpose of shareholding, overview of business alliance, quantitative effects of shareholding and reason for increase in number of shares | 
                                                (保有目的、業務提携等の概要)当社グループの取引銀行であり、金融取引の維持強化のため、保有しております。
(定量的な保有効果)(注)
                                                
                                             | 
                                                (保有目的、業務提携等の概要)当社グループの取引先であり、販売関係の維持強化のため、保有しております。
(定量的な保有効果)(注)
                                                
                                             | 
                                                (保有目的、業務提携等の概要)当社グループの取引先であり、販売関係の維持強化のため、保有しております。
(定量的な保有効果)(注)
                                                
                                             | — | — | — | 
| Whether issuer of aforementioned shares holds reporting company's shares | 
                                                有
                                                
                                             | 
                                                無
                                                
                                             | 
                                                無
                                                
                                             | — | — | — |