{"cik":2098712,"taxonomy":"us-gaap","tag":"Assets","label":"Assets","description":"Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.","entityName":"GigCapital9 Corp.","units":{"USD":[{"end":"2025-12-31","val":155828,"accn":"0001193125-26-134550","fy":2025,"fp":"FY","form":"10-K","filed":"2026-03-31"},{"end":"2025-12-31","val":155828,"accn":"0001193125-26-221727","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-13"},{"end":"2025-12-31","val":155828,"accn":"0001193125-26-335035","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-05","frame":"CY2025Q4I"},{"end":"2026-03-31","val":256678478,"accn":"0001193125-26-221727","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-13","frame":"CY2026Q1I"},{"end":"2026-06-30","val":258443714,"accn":"0001193125-26-335035","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-05","frame":"CY2026Q2I"}]}}