Shareholdings
| Concept | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 
|---|---|---|
| Shareholdings | ||
| Reporting company | ||
| Investment shares held for purposes other than pure investment | ||
| Shares not listed | ||
| Number of issues | — | 
                                                2
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Carrying amount | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Number of issues whose number of shares increased | 
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Total acquisition cost for increased shares | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Reason for increase in number of shares |  | — | 
| Number of issues whose number of shares decreased | 
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Total sale amount for decreased shares | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Shares other than those not listed | ||
| Number of issues | — | 
                                                18
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Carrying amount | — | 
                                                1,986,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Number of issues whose number of shares increased | 
                                                8
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Total acquisition cost for increased shares | 
                                                36,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Reason for increase in number of shares | 
                                                安定的な取引関係の維持・強化、及び市場価額、配当収益等の経済合理性について判断し、一部既存保有先の株式の持株会による取得。
                                                
                                             | — | 
| Number of issues whose number of shares decreased | 
                                                1
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Total sale amount for decreased shares | 
                                                93,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |