Shareholdings
| Concept | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 
|---|---|---|
| Shareholdings | ||
| Reporting company | ||
| Investment shares held for purposes other than pure investment | ||
| Shares not listed | ||
| Number of issues | 
                                                34
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Carrying amount | 
                                                484,000,000
                                                
                                                    
                                                        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 | — | 
                                                1
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Total sale amount for decreased shares | — | 
                                                23,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shares other than those not listed | ||
| Number of issues | 
                                                43
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Carrying amount | 
                                                23,345,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Number of issues whose number of shares increased | — | 
                                                1
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Total acquisition cost for increased shares | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Reason for increase in number of shares | — | 
                                                継続的な取引関係強化の為に取引先持株会に加入しています。
                                                
                                             | 
| Number of issues whose number of shares decreased | — | 
                                                13
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Total sale amount for decreased shares | — | 
                                                71,103,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |