S000053132 [Member] Average Annual Total Returns - UBS Select Government Preferred Fund |
12 Months Ended | 60 Months Ended | 102 Months Ended |
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2024 |
|
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 5.14% | 2.40% | 1.97% |
| Performance Inception Date | Jun. 28, 2016 |