Semi-Annual Consolidated Statement Of Changes In Equity
| Concept | 2024-02-01 to 2025-01-31 | As at 2025-01-31 | 2024-02-01 to 2025-01-31 | 2024-02-01 to 2025-01-31 | 2024-02-01 to 2025-01-31 | As at 2025-01-31 | 2024-02-01 to 2025-01-31 | 2024-02-01 to 2025-01-31 | 2024-02-01 to 2025-01-31 | 2024-02-01 to 2025-01-31 | As at 2025-01-31 | As at 2025-01-31 | 2024-02-01 to 2025-01-31 | As at 2025-01-31 | As at 2025-01-31 | 2024-02-01 to 2025-01-31 | As at 2025-01-31 | As at 2025-01-31 | 2024-02-01 to 2025-01-31 | 2024-02-01 to 2025-01-31 | As at 2025-01-31 | 2024-02-01 to 2025-01-31 | 2024-02-01 to 2025-01-31 | 2024-02-01 to 2025-01-31 | As at 2025-01-31 | 2024-02-01 to 2025-01-31 | As at 2025-01-31 | As at 2025-01-31 | As at 2025-01-31 | As at 2025-01-31 | 2024-02-01 to 2025-01-31 | 2024-02-01 to 2025-01-31 | As at 2025-01-31 | 2024-02-01 to 2025-01-31 | 2024-02-01 to 2025-01-31 | As at 2025-01-31 | 2024-02-01 to 2025-01-31 | As at 2025-01-31 | As at 2025-01-31 | As at 2025-01-31 | As at 2025-01-31 | As at 2025-01-31 | As at 2025-01-31 | As at 2025-01-31 | 2024-02-01 to 2025-01-31 | 2024-02-01 to 2025-01-31 | 2024-02-01 to 2025-01-31 | As at 2025-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2024-01-31 | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | As at 2023-01-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Semi-annual consolidated statement of changes in equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | — | 
                                                -16,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,069,666,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                5,315,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -16,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                339,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,007,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,966,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,315,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,069,666,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                21,978,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,042,146,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                170,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,978,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                140,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,359,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,966,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,190,542,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                656,566,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                62,348,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                311,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                316,865,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                311,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                3,847,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -87,221,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -87,221,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,966,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                341,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                71,182,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,005,625,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,007,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,054,846,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                71,182,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,042,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,780,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                314,592,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,966,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,042,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,275,968,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                503,880,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                47,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,054,846,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                189,288,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,320,973,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                311,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                311,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                417,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,204,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -227,627,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,523,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -227,627,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                109,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,966,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,966,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,523,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                308,345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,121,629,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,119,378,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,204,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,007,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,007,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,811,033,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,007,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                375,120,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                311,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                311,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,539,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) attributable to owners of parent | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                -171,150,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -171,150,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -171,150,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -33,594,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -33,594,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -33,594,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disposal of treasury shares | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                85,770,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,949,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,949,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                85,770,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                85,770,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                85,770,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                14,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                187,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,405,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                140,405,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                187,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                187,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                47,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                187,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                150,412,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                152,685,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -614,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,658,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                152,071,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -614,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                79,734,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                86,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                85,981,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                6,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                6,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                7,001,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                36,521,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,904,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,904,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                150,412,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                152,685,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -614,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                38,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                66,644,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -85,426,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -614,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -171,150,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -49,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -49,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                14,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                79,734,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                241,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,405,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                6,658,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                140,405,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                85,981,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                154,339,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                6,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                6,658,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                6,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -33,594,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                194,592,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                47,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                201,594,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |