Shareholdings
| Concept | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | 
|---|---|---|---|---|---|
| Shareholdings | |||||
| Largest holding company | |||||
| Investment shares reclassified from held for purposes other than pure investment to held for pure investment | |||||
| Issue | 
                                                SOMPOホールディングス株式会社
                                                
                                             | 
                                                三菱電機株式会社
                                                
                                             | 
                                                株式会社松屋
                                                
                                             | 
                                                丸紅株式会社
                                                
                                             | 
                                                三井不動産株式会社
                                                
                                             | 
| Number of shares | 
                                                698,350
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                6,400,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                46,600
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,241,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,287,500
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Carrying amount | 
                                                3,667,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,102,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,023,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,682,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |