Statement Of Changes In Equity
| Concept | 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 | 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 | 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 | 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 | 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 | 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 | As at 2024-12-31 | As at 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 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 | 2023-01-01 to 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 | As at 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 | 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 | 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 | 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 | 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 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 | 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 changes in equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                104,727,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -3,047,741,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -925,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,967,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                1,967,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                129,089,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                499,412,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,675,816,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,358,976,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                17,374,971,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,294,460,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,980,141,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                112,407,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,289,616,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                104,727,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,089,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                17,399,187,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,554,070,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,804,905,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                82,716,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,030,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                82,716,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                112,407,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                20,656,450,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                15,540,556,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                17,547,365,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,967,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,967,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,050,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                17,630,936,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -926,376,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,129,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,440,482,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                82,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,228,509,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,211,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                498,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                17,630,081,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                60,123,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                846,241,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,102,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,979,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,979,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -929,028,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                903,887,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,590,311,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,391,762,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,059,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,407,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,286,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                316,531,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,531,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,369,892,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,367,559,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,667,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                509,905,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,967,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,967,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,299,456,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,789,015,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Dividends of surplus | — | — | — | — | — | — | — | 
                                                -989,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                -989,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -989,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -989,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -989,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -989,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -989,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -1,098,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,098,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -1,098,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                -1,098,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -1,098,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -1,098,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -1,098,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Profit (loss) | — | — | — | — | — | — | — | 
                                                734,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                734,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,313,086,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                734,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                734,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                976,640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,341,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                1,341,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                1,341,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                1,341,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | — | 
                                                22,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                46,156,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                592,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                22,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                592,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                546,777,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                22,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -7,979,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -7,979,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                282,798,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                308,084,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                308,084,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                14,613,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                22,593,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                33,266,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                14,613,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | — | 
                                                22,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -252,905,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                46,156,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                592,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                892,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,059,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -230,893,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                918,494,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                325,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                546,777,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                22,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                323,691,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -255,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -4,852,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -250,940,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                977,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -316,531,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -7,979,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -7,979,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                282,798,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -149,829,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                253,936,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,734,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                308,084,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -141,383,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -14,589,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                14,613,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                239,174,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,593,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,266,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -132,564,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                247,909,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                262,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |