v3.26.1
Fees and Expenses - Prospectus Summary - Dreyfus Money Market Fund
Nov. 30, 2025
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and examples below.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Prospectus Summary - Dreyfus Money Market Fund
Premier Shares
Management Fees (as a percentage of Assets) 0.20%
Component2 Other Expenses 0.03%
Component3 Other Expenses 0.04%
Other Expenses (as a percentage of Assets): 0.07%
Expenses (as a percentage of Assets) 0.27%
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

The Example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the fund for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Prospectus Summary - Dreyfus Money Market Fund
Premier Shares
USD ($)
Expense Example, with Redemption, 1 Year $ 28
Expense Example, with Redemption, 3 Years 87
Expense Example, with Redemption, 5 Years 152
Expense Example, with Redemption, 10 Years $ 343
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and examples below.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Prospectus Summary - Dreyfus Money Market Fund
Service Shares
Management Fees (as a percentage of Assets) 0.20%
Component1 Other Expenses 0.55%
Component2 Other Expenses 0.25%
Component3 Other Expenses 0.04%
Other Expenses (as a percentage of Assets): 0.84%
Expenses (as a percentage of Assets) 1.04%
Fee Waiver or Reimbursement (0.04%) [1]
Net Expenses (as a percentage of Assets) 1.00%
Fee Waiver or Reimbursement over Assets, Date of Termination March 31, 2027
[1] The fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed, until at least March 31, 2027, to waive receipt of its fees and/or assume the direct expenses of the fund's Service shares so that the direct expenses of the fund's Service shares (excluding taxes, brokerage commissions and extraordinary expenses) do not exceed 1.00%. On or after March 31, 2027, BNY Mellon Investment Adviser, Inc. may terminate the expense limitation agreement at any time.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

The Example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the fund for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the fund's operating expenses remain the same. The one-year example and the first year of the three-, five- and ten-years examples are based on net operating expenses, which reflect the expense limitation agreement by BNY Mellon Investment Adviser, Inc. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Prospectus Summary - Dreyfus Money Market Fund
Service Shares
USD ($)
Expense Example, with Redemption, 1 Year $ 102
Expense Example, with Redemption, 3 Years 327
Expense Example, with Redemption, 5 Years 570
Expense Example, with Redemption, 10 Years $ 1,267
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and examples below.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Prospectus Summary - Dreyfus Money Market Fund
Wealth Shares
Management Fees (as a percentage of Assets) 0.20%
Component2 Other Expenses 0.25%
Component3 Other Expenses 0.09%
Other Expenses (as a percentage of Assets): 0.34%
Expenses (as a percentage of Assets) 0.54%
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

The Example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the fund for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Prospectus Summary - Dreyfus Money Market Fund
Wealth Shares
USD ($)
Expense Example, with Redemption, 1 Year $ 55
Expense Example, with Redemption, 3 Years 173
Expense Example, with Redemption, 5 Years 302
Expense Example, with Redemption, 10 Years $ 677