{"cik":1969863,"taxonomy":"us-gaap","tag":"EarningsPerShareBasic","label":"Earnings Per Share, Basic","description":"The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.","entityName":"SU Group Holdings Ltd","units":{"HKD/shares":[{"start":"2020-10-01","end":"2021-09-30","val":0.48,"accn":"0001213900-24-008504","fy":2023,"fp":"FY","form":"20-F","filed":"2024-01-31","frame":"CY2021"},{"start":"2021-10-01","end":"2022-09-30","val":0.65,"accn":"0001213900-24-008504","fy":2023,"fp":"FY","form":"20-F","filed":"2024-01-31"},{"start":"2021-10-01","end":"2022-09-30","val":0.65,"accn":"0001213900-25-007523","fy":2024,"fp":"FY","form":"20-F","filed":"2025-01-28","frame":"CY2022"},{"start":"2022-10-01","end":"2023-03-31","val":0.83,"accn":"0001213900-24-057163","fy":2024,"fp":"Q2","form":"6-K","filed":"2024-06-28"},{"start":"2022-10-01","end":"2023-09-30","val":0.81,"accn":"0001213900-24-008504","fy":2023,"fp":"FY","form":"20-F","filed":"2024-01-31"},{"start":"2022-10-01","end":"2023-09-30","val":0.81,"accn":"0001213900-25-007523","fy":2024,"fp":"FY","form":"20-F","filed":"2025-01-28"},{"start":"2022-10-01","end":"2023-09-30","val":8.08,"accn":"0001753926-26-000125","fy":2025,"fp":"FY","form":"20-F","filed":"2026-01-16","frame":"CY2023"},{"start":"2023-10-01","end":"2024-03-31","val":0.81,"accn":"0001213900-24-057163","fy":2024,"fp":"Q2","form":"6-K","filed":"2024-06-28"},{"start":"2023-10-01","end":"2024-03-31","val":0.81,"accn":"0001213900-25-059626","fy":2025,"fp":"Q2","form":"6-K","filed":"2025-06-30"},{"start":"2023-10-01","end":"2024-09-30","val":0.82,"accn":"0001213900-25-007523","fy":2024,"fp":"FY","form":"20-F","filed":"2025-01-28"},{"start":"2023-10-01","end":"2024-09-30","val":8.18,"accn":"0001753926-26-000125","fy":2025,"fp":"FY","form":"20-F","filed":"2026-01-16","frame":"CY2024"},{"start":"2024-04-01","end":"2024-09-30","val":0.82,"accn":"0001213900-25-059626","fy":2025,"fp":"Q2","form":"6-K","filed":"2025-06-30"},{"start":"2024-10-01","end":"2025-03-31","val":-0.33,"accn":"0001213900-25-059626","fy":2025,"fp":"Q2","form":"6-K","filed":"2025-06-30"},{"start":"2024-10-01","end":"2025-09-30","val":-13.36,"accn":"0001753926-26-000125","fy":2025,"fp":"FY","form":"20-F","filed":"2026-01-16","frame":"CY2025"}],"USD/shares":[{"start":"2022-10-01","end":"2023-09-30","val":0.1,"accn":"0001213900-24-008504","fy":2023,"fp":"FY","form":"20-F","filed":"2024-01-31","frame":"CY2023"},{"start":"2023-10-01","end":"2024-03-31","val":0.1,"accn":"0001213900-24-057163","fy":2024,"fp":"Q2","form":"6-K","filed":"2024-06-28"},{"start":"2023-10-01","end":"2024-09-30","val":0.11,"accn":"0001213900-25-007523","fy":2024,"fp":"FY","form":"20-F","filed":"2025-01-28","frame":"CY2024"},{"start":"2024-10-01","end":"2025-03-31","val":-0.04,"accn":"0001213900-25-059626","fy":2025,"fp":"Q2","form":"6-K","filed":"2025-06-30"},{"start":"2024-10-01","end":"2025-09-30","val":-1.72,"accn":"0001753926-26-000125","fy":2025,"fp":"FY","form":"20-F","filed":"2026-01-16","frame":"CY2025"}]}}