Statement Of Members' Equity
| Concept | 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 | 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 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 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 | 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 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 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 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 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 | — | 
                                                600,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -14,971,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,093,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                238,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,678,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                238,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                34,407,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,030,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,019,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,984,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -14,971,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,746,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                488,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                414,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                45,091,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,306,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,061,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                37,618,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                35,246,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                600,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                238,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                395,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                30,407,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,678,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -14,993,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,111,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                489,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                43,696,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,081,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,093,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,030,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -14,993,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                415,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,161,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,388,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                395,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,367,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,119,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                31,050,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                213,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                993,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,371,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                853,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,341,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                414,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,742,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,133,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                898,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,093,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,880,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,880,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,030,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                175,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,678,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,125,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,779,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,529,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                213,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                7,003,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                7,003,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                7,003,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                7,631,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                7,003,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                2,883,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                2,883,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                2,883,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                2,883,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,249,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | 
                                                205,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                617,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                627,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                195,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                826,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                205,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -165,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                181,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                289,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                266,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                373,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                389,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                181,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | 
                                                205,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                617,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                21,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,979,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                4,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                627,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                4,196,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,630,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,457,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,610,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,979,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                205,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -165,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                181,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -260,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -3,354,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -4,372,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -4,083,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                266,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,112,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                373,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -260,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,167,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,964,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                -4,112,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -408,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                181,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |