Shareholdings
| Concept | As at 2024-12-31 | As at 2023-12-31 | 
|---|---|---|
| Shareholdings | ||
| Reporting company | ||
| Details of deemed holdings of shares held for purposes other than pure investment | ||
| Issue | 
                                                ソニーグループ㈱
                                                
                                             | — | 
| Number of shares | 
                                                44,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                44,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Carrying amount | 
                                                741,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                590,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Purpose of shareholding, overview of business alliance, quantitative effects of shareholding and reason for increase in number of shares | 
                                                同社株式は主に写真関連事業における取引関係の維持・強化を目的として保有しております。定量的な保有効果につきましては秘密保持の観点により記載しておりませんが、定期的な保有適否の検証に基づき、十分に定量的な保有効果があると判断しております。
                                                
                                             | — | 
| Whether issuer of aforementioned shares holds reporting company's shares | 
                                                有
                                                
                                             | — |