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Fees and Expenses - BNY Mellon Small Cap Value Fund
Aug. 22, 2025
Prospectus [Line Items]  
Expense Narrative [Text Block]

Effective on or about October 1, 2025 (the "Effective Date"), the following information supersedes and replaces any contrary information in the sections "Fees and Expenses" in the fund's summary prospectus and "Fund Summary – Fees and Expenses" in the fund's prospectus:

Shareholder Fees Caption [Optional Text] Shareholder Fees (fees paid directly from your investment)
Shareholder Fees [Table]
Shareholder Fees (fees paid directly from your investment)
  Class A Class C Class I Class Y  

Maximum sales charge (load) imposed on purchases

(as a percentage of offering price)

5.75 none none none  

Maximum deferred sales charge (load)

(as a percentage of lower of purchase or sale price)

none* 1.00 none none  
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
  (expenses that you pay each year as a percentage of the value of your investment)
  Class A Class C Class I Class Y  
Management fees .80 .80 .80 .80  
Distribution (12b-1) fees none .75 none none  
Other expenses: +          
Shareholder services fees .25 .25 none none  
Miscellaneous other expenses .34 .50 .25 .19  
Total other expenses .59 .75 .25 .19  
Total annual fund operating expenses+ 1.39 2.30 1.05 .99  
Fee waiver^ (.15) (.15) (.15) (.15)  
Total annual fund operating expenses
(after fee waiver)
+
1.24 2.15 .90 .84  

* Class A shares bought without an initial sales charge as part of an investment of $1 million or more may be charged a deferred sales charge of 1.00% if redeemed within one year.

+ "Other expenses," "Total annual fund operating expenses" and "Total annual fund operating expenses (after fee waiver)" have been restated to reflect the termination of the fund's fund accounting and administrative services agreement and the fee payable thereunder.

^ The fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed to waive receipt of a portion of its management fee in the amount of .15% of the value of the fund's average daily net assets until February 27, 2026. On or after February 27, 2026, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.

Expenses Deferred Charges [Text Block] Class A shares bought without an initial sales charge as part of an investment of $1 million or more may be charged a deferred sales charge of 1.00% if redeemed within one year.
Expense Example [Heading] Example
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years
Class A (with or without redemption at end of period) $694 $976 $1,278 $2,135
Class C (with redemption at end of period) $318 $704 $1,217 $2,024
Class C (without redemption at end of period) $218 $704 $1,217 $2,624
Class I (with or without redemption at end of period) $92 $319 $565 $1,269
Class Y (with or without redemption at end of period) $86 $300 $532 $1,199
Expense Example, No Redemption [Table]
  1 Year 3 Years 5 Years 10 Years
Class A (with or without redemption at end of period) $694 $976 $1,278 $2,135
Class C (with redemption at end of period) $318 $704 $1,217 $2,024
Class C (without redemption at end of period) $218 $704 $1,217 $2,624
Class I (with or without redemption at end of period) $92 $319 $565 $1,269
Class Y (with or without redemption at end of period) $86 $300 $532 $1,199