Shareholdings
| Concept | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Shareholdings | ||||||||||||||||||||
| Reporting company | ||||||||||||||||||||
| Details of specified investment shares held for purposes other than pure investment | ||||||||||||||||||||
| Issue | 
                                                ㈱スクウェア・エニックス
・ホールディングス
                                                
                                             | 
                                                ㈱紀陽銀行
                                                
                                             | 
                                                セガサミーホールディングス㈱
                                                
                                             | 
                                                Jトラスト㈱
                                                
                                             | 
                                                コナミグループ㈱
                                                
                                             | 
                                                ㈱ラウンドワン
                                                
                                             | 
                                                ソニーグループ㈱
                                                
                                             | 
                                                任天堂㈱
                                                
                                             | 
                                                ㈱NTTデータグループ
                                                
                                             | 
                                                ㈱ベクターホールディングス
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Number of shares | 
                                                127
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                14,800
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                56
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                100
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                600
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                3,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                15,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                3,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                127
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                56
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                3,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                14,800
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                100
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                600
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                3,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                15,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Carrying amount | 
                                                734,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                122,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                481,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,024,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,310,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,107,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                375,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                778,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,331,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                568,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                637,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                285,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,625,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,045,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Whether issuer of aforementioned shares holds reporting company's shares | 
                                                無
                                                
                                             | 
                                                無
                                                
                                             | 
                                                無
                                                
                                             | 
                                                無
                                                
                                             | 
                                                無
                                                
                                             | 
                                                無
                                                
                                             | 
                                                無
                                                
                                             | 
                                                無
                                                
                                             | 
                                                無
                                                
                                             | 
                                                無
                                                
                                             | — | — | — | — | — | — | — | — | — | — |