Statement Of Members' Equity
| Concept | 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 | 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 | 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 | 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 | 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 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 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 | 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 | 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 | 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 | 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 members' equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of members' equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                -5,525,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                12,336,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                11,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                12,191,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                11,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,917,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                104,433,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                13,051,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                120,683,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,702,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,525,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,488,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,051,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                13,289,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                77,175,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                144,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                84,572,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,775,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                99,868,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,621,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                138,302,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                115,845,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                11,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,540,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                13,051,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                105,295,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,191,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,675,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                85,602,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                11,581,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                11,581,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,584,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                13,270,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,775,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                99,488,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -5,848,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,675,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,317,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -5,675,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                126,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                13,051,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                141,577,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                120,134,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,902,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,978,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                116,876,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                13,714,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,814,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,775,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,579,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,051,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,051,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,826,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                126,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,814,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                132,353,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                125,630,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,816,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,270,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,317,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,730,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,730,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,575,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                317,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,927,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,191,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,994,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                116,815,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                111,762,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                2,741,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                2,741,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                2,741,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                4,906,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,741,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                -7,802,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -7,802,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -7,802,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -7,802,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -8,636,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | — | — | 
                                                -171,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -4,199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                376,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                -4,489,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                461,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                -3,823,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -386,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                1,021,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                2,766,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,398,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                2,766,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,188,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                2,766,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,767,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                4,801,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -171,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                150,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                150,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                376,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,469,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -861,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,489,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,030,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                548,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                461,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -3,275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                379,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,030,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                18,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -386,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -13,674,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -12,218,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,021,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,520,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -8,753,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,398,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                54,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,766,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,188,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                2,766,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,574,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,767,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -12,273,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,417,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                54,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |