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RMA Program [Member] Average Annual Total Returns - UBS RMA Government Money Market Fund
12 Months Ended 60 Months Ended 114 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Prospectus [Line Items]      
Average Annual Return, Percent 3.61% 2.75% 1.84%
Performance Inception Date     Jun. 24, 2016