Statement Of Changes In Net Assets
| Concept | As at 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 | 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 | 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 | 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 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 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 | 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 | 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 | 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 | 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 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in net assets | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in net assets | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                556,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                852,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -15,842,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                60,040,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                59,256,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                535,187,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                32,641,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                783,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                458,348,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,160,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                449,631,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                538,830,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,776,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,789,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                995,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                556,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                516,969,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                59,256,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -16,072,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                441,060,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,212,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                8,025,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                8,160,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                400,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                432,342,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                59,339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                2,813,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                82,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                32,641,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                526,391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                556,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,172,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,519,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                413,879,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,160,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,641,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                405,162,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,332,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                496,326,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                59,256,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                302,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -16,259,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                59,256,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                489,518,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,813,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                65,857,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                65,857,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                65,857,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                65,857,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                69,283,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                69,283,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                69,283,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                69,283,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                -142,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -5,199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                229,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                17,288,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                18,218,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -400,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,439,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                17,288,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,235,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -36,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,180,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,450,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                98,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,064,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                82,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                186,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,693,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,693,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,180,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                82,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |