v3.26.1
IRA RMA Program [Member] Investment Objectives and Goals - UBS Liquid Assets Government Fund
Apr. 30, 2026
Prospectus [Line Items]  
Risk/Return [Heading] UBS Liquid Assets Government Fund Fund summary
Objective [Heading] Investment objective
Objective, Primary [Text Block]
To provide as high a level of current interest income as is consistent with maintaining liquidity and stability of principal.