v3.26.1
IRA RMA Program [Member] Shareholder Fees - UBS Liquid Assets Government Fund - UBS Liquid Assets Government Fund
Apr. 30, 2026
USD ($)
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
IRA-RMA Program  
Prospectus [Line Items]  
Maximum Account Fee $ 200
IRA Program  
Prospectus [Line Items]  
Maximum Account Fee $ 125