{"cik":2090452,"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":"FG IMPERII ACQUISITION CORP.","units":{"USD/shares":[{"start":"2025-09-16","end":"2025-12-31","val":-0.01,"accn":"0001104659-26-037916","fy":2025,"fp":"FY","form":"10-K","filed":"2026-03-31","frame":"CY2025Q4"}]}}