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 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 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 | 
                                                -8,106,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                16,294,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                10,999,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                913,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                58,676,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                12,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                10,031,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,011,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,962,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,106,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                8,027,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,031,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                15,153,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                5,294,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                40,456,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                620,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,932,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,135,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                102,978,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                59,577,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                9,903,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -6,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                54,959,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,870,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,993,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,883,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                702,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                702,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                709,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                15,025,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                620,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                70,989,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,563,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,165,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                12,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -5,993,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,294,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                9,903,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                100,398,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,925,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,469,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,766,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                55,662,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                6,637,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                431,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,858,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                620,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,223,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,761,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,761,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,537,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,294,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                431,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,098,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                429,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,883,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,023,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -14,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,728,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                92,739,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,535,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,561,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                10,166,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                10,166,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                10,166,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                10,779,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                10,166,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                6,058,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                6,058,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                6,058,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                6,058,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                8,652,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | — | — | 
                                                203,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,507,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                -1,738,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                27,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                -1,506,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                8,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                270,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,542,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                270,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,831,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                270,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                280,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                3,832,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                128,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                203,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,507,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,113,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -2,113,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                128,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,572,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                3,716,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,738,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,915,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,086,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                128,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,580,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,943,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,572,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                128,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,025,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,826,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,424,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,694,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,542,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                114,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                270,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,831,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                270,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,025,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                280,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,427,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,658,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                114,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |