Statement Of Changes In Net Assets
| Concept | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in net assets | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in net assets | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                336,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -245,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                622,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                450,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                531,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                646,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,417,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,388,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                5,231,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,146,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,267,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,974,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -245,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                910,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,209,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                91,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,731,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,179,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -751,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,630,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                5,682,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                450,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                4,695,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,587,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,866,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                531,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -31,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,152,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                431,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                431,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                575,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                897,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                8,585,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,361,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                622,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,146,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -31,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,396,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,574,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,125,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                962,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,298,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                367,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,705,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                163,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,308,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                492,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,236,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,227,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                163,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,322,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,321,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                241,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,033,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,758,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -31,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -31,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,146,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                971,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,342,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                531,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,370,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,158,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,197,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                398,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                734,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                734,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                734,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                1,044,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                734,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                1,049,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                1,049,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,049,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                1,049,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                951,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                70,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -151,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                18,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -214,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -214,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -306,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                610,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                365,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -51,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                384,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                692,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                233,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                593,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                579,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                312,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -31,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                352,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                874,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -747,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                616,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -291,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -23,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                469,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,135,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                268,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,420,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                268,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                844,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                334,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                388,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,135,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,025,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,135,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -30,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |