Semi-Annual Consolidated Statement Of Changes In Equity
| Concept | 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 | 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 | 2024-01-01 to 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 | 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 | 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 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 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Semi-annual consolidated statement of changes in equity | |||||||||||||||||||||||||||||||||||
| Statement of changes in equity | |||||||||||||||||||||||||||||||||||
| Net assets | 
                                                605,163,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,398,883,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,349,223,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,589,399,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,963,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -67,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                984,236,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                627,174,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,141,112,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                2,866,475,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,042,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,239,301,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,140,612,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -65,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -64,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,439,029,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,066,205,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,816,519,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,066,705,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,316,327,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                622,510,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | |||||||||||||||||||||||||||||||||||
| Issuance of new shares | — | — | — | — | — | — | — | — | 
                                                47,927,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                23,963,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,927,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,963,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                148,814,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                148,814,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                74,407,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                74,407,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | — | 
                                                -22,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -22,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                4,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | — | 
                                                -22,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                643,475,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,277,076,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                208,610,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,255,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,107,149,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -577,217,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -726,031,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -572,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                74,407,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                74,407,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — |