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 | 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 | 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 | 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 | 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 | 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 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 | 
                                                -158,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                283,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                409,242,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                283,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                409,242,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                7,197,743,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                393,997,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,476,787,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                409,242,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -158,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                393,997,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                283,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                6,679,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,999,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,958,594,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,634,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                7,886,030,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                7,606,985,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                409,242,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                393,997,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                6,962,155,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -158,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,443,962,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                320,619,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                320,619,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                320,619,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                283,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,999,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                6,681,341,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,398,962,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -158,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                393,997,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,520,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,199,534,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                320,619,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                7,282,774,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                69,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                69,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,046,657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,999,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                393,997,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                393,997,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,001,658,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                69,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,800,407,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,633,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                69,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -158,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -158,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,869,540,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,564,850,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,282,214,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Dividends of surplus | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -131,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -131,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -131,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -131,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                -131,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -131,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -131,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -105,255,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -105,255,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                -105,255,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -105,255,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                -105,255,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -105,255,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -105,255,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Profit (loss) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                367,157,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                367,157,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                367,157,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                408,822,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                367,157,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                502,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                502,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                502,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                502,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                504,383,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | — | — | 
                                                88,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                88,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                88,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                88,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                88,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                88,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                251,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                251,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                251,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                251,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                251,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                251,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                88,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                88,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                235,587,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                235,587,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                324,211,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                277,252,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                365,876,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                277,252,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                235,587,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                397,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                399,127,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                397,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                648,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                251,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                251,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                251,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                397,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                251,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                399,127,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                650,613,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |