Statement Of Changes In Equity
| Concept | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                -355,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                968,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                301,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                968,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                301,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,803,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                7,823,360,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                6,082,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                886,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,121,367,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -896,293,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -355,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                886,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                968,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                6,324,694,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,622,701,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                186,670,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                7,225,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                6,908,263,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -915,096,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,216,251,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,216,251,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                886,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                20,433,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                7,841,663,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                968,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -316,083,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,303,657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                239,093,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -1,014,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                239,093,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                968,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                6,584,952,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                350,633,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                968,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,897,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -316,083,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                886,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,129,330,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,122,959,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -993,628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                6,827,601,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,253,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,253,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,123,618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                121,698,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,128,692,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                886,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                886,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                555,668,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,131,456,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,176,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,772,542,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                121,698,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                968,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                968,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -78,783,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -78,783,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,517,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,837,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,052,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                968,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,903,999,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,401,014,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,253,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,253,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Dividends of surplus | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -152,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -152,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -152,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -152,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                -152,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -152,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -152,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                -162,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -162,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                -162,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -162,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                -162,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -162,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -162,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Profit (loss) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                213,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                213,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                213,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                229,982,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                213,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                337,701,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                337,701,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                337,701,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                337,701,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                346,675,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | — | — | 
                                                62,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                97,334,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                62,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                -39,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -39,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                59,268,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -39,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,630,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                57,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -39,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -39,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                36,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                12,595,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                117,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                117,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                129,990,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                117,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                117,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                129,990,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                62,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,334,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                62,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -39,340,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -39,340,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -163,962,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -18,303,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                80,661,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,591,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,630,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                185,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,743,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                37,749,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,037,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                36,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -205,035,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -53,361,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                12,595,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -62,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                380,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                55,059,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -237,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                117,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                129,990,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                117,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                174,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                117,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                183,938,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -237,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |