{"cik":2098669,"taxonomy":"us-gaap","tag":"RetainedEarningsAccumulatedDeficit","label":"Retained Earnings (Accumulated Deficit)","description":"The cumulative amount of the reporting entity's undistributed earnings or deficit.","entityName":"United Acquisition Corp. I","units":{"USD":[{"end":"2025-12-31","val":-395502,"accn":"0001493152-26-013617","fy":2025,"fp":"FY","form":"10-K","filed":"2026-03-30","frame":"CY2025Q4I"}]}}