Class Aand Class P [Member] Investment Objectives and Goals - Class A and Class P - UBS Ultra Short Income Fund |
Apr. 30, 2026 |
|---|---|
| Prospectus [Line Items] | |
| Risk/Return [Heading] | UBS Ultra Short Income Fund Summary |
| Objective [Heading] | Investment objective |
| Objective, Primary [Text Block] | To provide current income while seeking to maintain low volatility of principal.
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