{"cik":2090452,"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":"FG IMPERII ACQUISITION CORP.","units":{"USD":[{"end":"2025-12-31","val":163944,"accn":"0001104659-26-037916","fy":2025,"fp":"FY","form":"10-K","filed":"2026-03-31"},{"end":"2025-12-31","val":163944,"accn":"0001104659-26-061348","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-14"},{"end":"2025-12-31","val":163944,"accn":"0001104659-26-086404","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-07-24","frame":"CY2025Q4I"},{"end":"2026-03-31","val":230104193,"accn":"0001104659-26-061348","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-14","frame":"CY2026Q1I"},{"end":"2026-06-30","val":232042352,"accn":"0001104659-26-086404","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-07-24","frame":"CY2026Q2I"}]}}