Statement Of Members' Equity
| Concept | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 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 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 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 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 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 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of members' equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of members' equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                458,587,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                270,805,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                269,905,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                124,643,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                196,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -27,924,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                457,205,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,063,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,759,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                181,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                91,063,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,578,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                516,241,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,063,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,063,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -102,017,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                402,552,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                311,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                260,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -3,589,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                927,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -3,900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                124,643,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                512,912,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                401,625,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                124,643,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                232,887,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,440,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                418,309,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,063,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                963,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                279,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,063,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -28,086,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                421,470,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                236,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,676,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                233,850,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | 
                                                61,665,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                61,665,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                61,665,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                61,665,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                293,613,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                293,613,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                293,613,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                293,613,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | — | — | — | — | — | — | — | — | — | 
                                                2,011,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                -130,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,011,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                75,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                -224,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -149,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                -149,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -64,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -131,720,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -131,747,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,011,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -57,654,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -130,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -55,707,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,093,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -27,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -36,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                75,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                168,702,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -224,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,771,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                94,603,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -73,931,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -149,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -19,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                168,738,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |