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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | As at 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in net assets | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in net assets | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                598,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                4,297,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,384,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,103,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                38,237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                28,800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,343,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,315,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,159,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                4,671,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,343,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                32,541,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                307,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,619,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,835,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                42,534,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,297,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                783,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,343,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,807,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                38,643,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,947,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,089,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                5,089,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,173,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                307,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                38,927,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,228,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -1,211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,343,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,918,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,623,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,511,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,530,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                43,733,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                611,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,464,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,891,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,573,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                307,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,819,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,343,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,343,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,151,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,891,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,618,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,160,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,933,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,710,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,426,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,509,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,269,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,922,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                617,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                545,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                545,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                545,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                1,062,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                545,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                -673,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -673,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -673,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -673,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -2,356,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -789,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                648,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -792,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,021,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -393,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -406,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,692,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                296,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                318,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,692,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -406,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -792,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,642,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,380,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,995,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,096,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,625,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                572,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                710,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,047,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,625,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,239,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,994,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                409,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |