Statement Of Changes In Equity
| Concept | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,610,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -7,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                828,382,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                730,768,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                413,218,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                316,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                861,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -29,529,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                129,610,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,614,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -907,479,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                326,685,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,132,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -907,479,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                327,384,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                413,218,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                134,513,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -29,212,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                24,112,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                114,844,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -350,143,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -434,411,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                236,146,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                465,534,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                563,148,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -434,411,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -7,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -54,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                292,094,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                97,614,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                114,844,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,261,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                320,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -53,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                563,148,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                236,845,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -28,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,434,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -28,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                446,831,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,394,777,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,434,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                887,733,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                887,733,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,394,777,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,614,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,989,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                449,252,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                462,187,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                975,348,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                877,733,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                975,348,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                460,869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,406,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -473,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -473,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -783,150,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -473,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -473,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -339,403,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -434,411,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                -434,411,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -434,411,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -434,411,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -501,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,918,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,416,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,862,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -877,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -25,663,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -25,279,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -24,402,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,261,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -501,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                265,233,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                90,539,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                265,233,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,918,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                90,539,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -162,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -185,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                298,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,862,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                298,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -782,648,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -473,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -473,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                298,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -877,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -25,663,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -154,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                960,366,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -24,402,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -128,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -772,889,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -772,889,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                960,366,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -412,199,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,261,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,056,251,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -224,724,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -412,199,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -225,342,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -412,199,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |