{"cik":2098712,"taxonomy":"us-gaap","tag":"OperatingIncomeLoss","label":"Operating Income (Loss)","description":"The net result for the period of deducting operating expenses from operating revenues.","entityName":"GigCapital9 Corp.","units":{"USD":[{"start":"2025-10-29","end":"2025-12-31","val":-44766,"accn":"0001193125-26-134550","fy":2025,"fp":"FY","form":"10-K","filed":"2026-03-31","frame":"CY2025Q4"}]}}