Semi-Annual Consolidated Statement Of Changes In Equity
| Concept | 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 | 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 | 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 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 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 | 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 | 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 | 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 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Semi-annual consolidated statement of changes in equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                8,474,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                205,214,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                8,976,471,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,965,971,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                526,584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -1,765,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,820,852,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                737,116,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                346,554,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                346,554,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                531,902,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                9,063,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                531,902,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                620,426,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -596,184,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,513,049,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                301,809,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                301,809,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                88,524,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                526,584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                10,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                9,365,684,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,502,549,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                526,584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,028,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,498,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                203,877,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,773,699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                600,400,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                531,902,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -596,163,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,569,821,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                203,877,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,039,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Dividends of surplus | — | — | — | — | — | — | — | 
                                                -731,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -731,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -731,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                -731,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                -608,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -608,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -608,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                -608,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disposal of treasury shares | — | — | — | — | — | — | — | — | — | — | — | 
                                                134,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                116,690,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                18,184,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                134,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                116,690,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                28,397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                28,397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                20,025,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                20,025,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | — | — | — | — | — | — | — | — | — | 
                                                44,745,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                44,745,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                44,745,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                97,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                97,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                97,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                463,422,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                463,422,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,745,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -589,576,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                116,690,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                44,745,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,169,689,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -544,831,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                116,690,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                97,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                474,048,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                494,053,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                591,985,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                20,025,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                20,025,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -20,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                474,048,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — |