Statement Of Members' Equity
| Concept | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | As at 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of members' equity | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of members' equity | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                2,454,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                225,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,084,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,084,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                23,518,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                11,590,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                17,830,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,454,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                23,670,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,474,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,928,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,812,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,076,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,366,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,812,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,454,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                46,531,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                17,830,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,782,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,466,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,648,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,648,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                17,830,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,698,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,933,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                45,228,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,590,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,587,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,933,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -1,122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,821,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                14,997,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                17,830,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,648,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,173,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,648,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                26,767,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                46,876,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,256,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,256,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -976,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,256,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,808,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                949,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -976,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,830,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,830,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                949,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,997,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                515,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,036,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,647,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,256,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,767,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,590,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,587,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -584,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,129,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,129,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,129,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,129,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                4,035,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,736,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,736,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                1,736,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                1,736,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | 
                                                806,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                225,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                806,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                818,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                806,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,044,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                806,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -515,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -123,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                806,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                225,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,151,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                806,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,069,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                818,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                38,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,069,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -345,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,653,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,609,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                806,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,668,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,879,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,879,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -3,097,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -515,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                3,012,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                984,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -146,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                984,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,283,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                837,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                1,228,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -146,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |