v3.26.1
Performance Management - BNY Dreyfus Institutional Preferred Government Plus Money Market Fund
Mar. 31, 2026
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block]

The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the performance of the fund's Institutional shares from year to year. The table shows the average annual total returns of the fund's Institutional shares over time. The fund's past performance is not necessarily an indication of how the fund will perform in the future. More recent performance information may be available at www.dreyfus.com.
Performance Past Does Not Indicate Future [Text] The fund's past performance is not necessarily an indication of how the fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The following bar chart and table provide some indication of the risks of investing in the fund.
Bar Chart [Heading] Year-by-Year Total Returns as of 12/31 each year (%)
Bar Chart Closing [Text Block]

During the periods shown in the chart:
Best Quarter
2023, Q4: 1.36
Worst Quarter
2021, Q3: 0.01

The year-to-date total return of the fund's Institutional shares as of June 30, 2026 was 1.84%.
Performance [Table]
Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
BNY Dreyfus Institutional Preferred Government Plus Money Market Fund | Institutional Shares | Average Annual Return, Percent 4.37% 3.32% 2.22%
Average Annual Return, Caption [Optional Text] Average Annual Total Returns (as of 12/31/25)
Performance Table Closing [Text Block]

For the current yield, call toll free 1-800-373-9387.
Performance Availability Website Address [Text] www.dreyfus.com
Institutional Shares  
Prospectus [Line Items]  
Year to Date Return, Label [Optional Text] The year-to-date total return of the fund's Institutional shares as of
Bar Chart, Year to Date Return 1.84%
Bar Chart, Year to Date Return, Date Jun. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 1.36%
Highest Quarterly Return, Date Dec. 31, 2023
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return 0.01%
Lowest Quarterly Return, Date Sep. 30, 2021