v3.26.1
RMA Program [Member] Shareholder Fees - UBS RMA Government Money Market Fund - UBS RMA Government Money Market 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%
RMA Program [Member]  
Prospectus [Line Items]  
Maximum Account Fee $ 175
Business Services Account BSA Program [Member]  
Prospectus [Line Items]  
Maximum Account Fee 175
Basic Investment Account Program [Member]  
Prospectus [Line Items]  
Maximum Account Fee $ 100