XML 67 R2.htm IDEA: XBRL DOCUMENT v3.24.3
Shareholder Report
 12 Months Ended
Sep. 30, 2024
USD ($)
Holdings
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name BNY Mellon Investment Funds I
Entity Central Index Key 0000799295
Entity Investment Company Type N-1A
Document Period End Date Sep. 30, 2024
BNY Mellon International Equity Fund - Class A  
Shareholder Report [Line Items]  
Fund Name BNY Mellon International Equity Fund
Class Name Class A
Trading Symbol NIEAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon International Equity Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
*
 $121 1.08
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 121 [1]
Expense Ratio, Percent 1.08% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • International equity markets rose on hopes for, and the subsequent arrival of, interest rate cuts, as well as enthusiasm regarding artificial intelligence (“AI”).
  • The Fund’s returns relative to the Index benefited from strong stock selection in the industrials and consumer discretionary sectors.
  • Overweight exposure to the information technology sector bolstered returns amid investor enthusiasm for AI early in the reporting period, while lack of energy exposure also proved beneficial.
  • Stock selection in financials proved the most significant detractor from relative returns by far.
  • On a regional basis, stock selection in emerging markets was weak, particularly in South Korea.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Class A Shares
1YR
5YR
10YR
with Maximum Sales Charge - 5.75% 16.38
%
 5.11
%
 3.36
%
without Sales Charge 23.45
%
 6.36
%
 3.98
%
MSCI EAFE
®
Index		 24.77
%
 8.20
%
 5.71
%
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 294,000,000
Holdings Count | Holdings 61
Advisory Fees Paid, Amount $ 2,205,575
Investment Company, Portfolio Turnover 95.93%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
294		 61
$
2,205,575		 95.93
%
Holdings [Text Block]
Portfolio Holdings (as of 9/30/24)
Country
Allocation (
Based
on Net Assets)
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund changed?
  • Effective September 1, 2024, the Fund's investment adviser, BNY Mellon Inve
    stment
    Adviser, Inc., has c
    ont
    ractually agreed, until February 1, 2025, to waive receipt of its fees and/or assume the direct expenses of the Fund so that the direct expenses of none of the Fund's share classes (excluding Rule 12b-1 fees, shareholder services fees, taxes, interest expense, brokerage commissions, commitment fees on borrowings and extraordinary expenses) exceed 0.77%. On February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this expense limitation agreement at any time.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block]
Effective September 1, 2024, the Fund's investment adviser, BNY Mellon Inve
stment
Adviser, Inc., has c
ont
ractually agreed, until February 1, 2025, to waive receipt of its fees and/or assume the direct expenses of the Fund so that the direct expenses of none of the Fund's share classes (excluding Rule 12b-1 fees, shareholder services fees, taxes, interest expense, brokerage commissions, commitment fees on borrowings and extraordinary expenses) exceed 0.77%. On February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this expense limitation agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon International Equity Fund - Class C  
Shareholder Report [Line Items]  
Fund Name BNY Mellon International Equity Fund
Class Name Class C
Trading Symbol NIECX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon International Equity Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $
10,000
investment
Costs paid as a percentage of a $10,000 investment
Class C
*
$
204		 1.83
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 204 [1]
Expense Ratio, Percent 1.83% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • International equity markets rose on hopes for, and the subsequent arrival of, interest rate cuts, as well as enthusiasm regarding artificial intelligence (“AI”).
  • The Fund’s returns relative to the Index benefited from strong stock selection in the industrials and consumer discretionary sectors.
  • Overweight exposure to the information technology sector bolstered returns amid investor enthusiasm for AI early in the reporting period, while lack of energy exposure also proved beneficial.
  • Stock selection in financials proved the most significant detractor from relative returns by far.
  • On a regional basis, stock selec
    tio
    n in emerging markets was weak, p
    articul
    arly in South Korea.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Class C Shares
1YR
5YR
10YR
with Maximum Deferred Sales Charge - 1.00% 21.53
%
*
 5.56
%
 3.18
%
without Deferred Sales Charge 22.53
%
 5.56
%
 3.18
%
MSCI EAFE
®
Index		 24.77
%
 8.20
%
 5.71
%
*
The maximum contingent deferred sales charge for Class C shares is 1.00% for shares redeemed within one year of the date purchased.
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 294,000,000
Holdings Count | Holdings 61
Advisory Fees Paid, Amount $ 2,205,575
Investment Company, Portfolio Turnover 95.93%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
294		 61
$
2,205,575		 95.93
%
Holdings [Text Block]
Portfolio H
ol
dings (as of 9/30/24)
Country Allocation (Based on Net Assets)
Top Ten Holdings (Based on Net
Asset
s)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net
Asset
s)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund changed?
  • Effective September 1, 2024, the Fund's inv
    estm
    ent adviser, BNY
    Mello
    n Investment Adviser, Inc., has contractually agreed, until February 1, 2025, to waive receipt of its fees and/or assume the direct expenses of the Fund so that the direct expenses of none of the Fund's share classes (excluding Rule 12b-1 fe
    es,
    shareholder services fees, taxes, interest expense, brokerage commissions, commitment fees on borrowings and extraordinary expenses) exceed 0.77%. On February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this expense limitation agreement at any time.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block] Effective September 1, 2024, the Fund's inv
estm
ent adviser, BNY
Mello
n Investment Adviser, Inc., has contractually agreed, until February 1, 2025, to waive receipt of its fees and/or assume the direct expenses of the Fund so that the direct expenses of none of the Fund's share classes (excluding Rule 12b-1 fe
es,
shareholder services fees, taxes, interest expense, brokerage commissions, commitment fees on borrowings and extraordinary expenses) exceed 0.77%. On February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this expense limitation agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon International Equity Fund - Class I  
Shareholder Report [Line Items]  
Fund Name BNY Mellon International Equity Fund
Class Name Class I
Trading Symbol SNIEX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon International Equity Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class I
*
$
93		 0.83
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 93 [1]
Expense Ratio, Percent 0.83% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • International equity markets rose on hopes for, and the subsequent arrival of, interest rate cuts, as well as enthusiasm regarding artificial intelligence (“AI”).
  • The Fund’s returns relative to the Index benefited from strong stock selection in the industrials and consumer discretionary sectors.
  • Overweight exposure to the information technology sector bolstered returns amid investor enthusiasm for AI early in the reporting period, while lack of energy exposure also proved beneficial.
  • Stock selection in financials proved the most significant detractor from relative returns by far.
  • On a regional basis, stock selection in emerging markets was weak, particularly in South Korea.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Share Class
1YR
5YR
10YR
Class I Shares 23.83
%
 6.63
%
 4.25
%
MSCI EAFE
®
Index		 24.77
%
 8.20
%
 5.71
%
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 294,000,000
Holdings Count | Holdings 61
Advisory Fees Paid, Amount $ 2,205,575
Investment Company, Portfolio Turnover 95.93%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
294		 61
$
2,205,575		 95.93
%
Holdings [Text Block]
Po
rtfo
lio Holdings (as of 9/30/24)
Country Allocation (Based on Net Assets)
Top Ten Holdings (Based on Net
Assets
)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net
Assets
)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund changed?
  • Effective September 1, 2024, the Fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed, until February 1, 2025, to waive receipt of its fees and/or assume the direct expenses of the Fund so that the direct expenses of none of the Fund's share classes (excluding Rule 12b-1 fees, shareholder services fees, taxes, interest expense, brokerage
    comm
    issions, commitment fees on borrowings and extraordinary expenses) exceed 0.77%. On February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this expense lim
    itati
    on agreement at any time.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block] Effective September 1, 2024, the Fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed, until February 1, 2025, to waive receipt of its fees and/or assume the direct expenses of the Fund so that the direct expenses of none of the Fund's share classes (excluding Rule 12b-1 fees, shareholder services fees, taxes, interest expense, brokerage
comm
issions, commitment fees on borrowings and extraordinary expenses) exceed 0.77%. On February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this expense lim
itati
on agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon International Equity Fund - Class Y  
Shareholder Report [Line Items]  
Fund Name BNY Mellon International Equity Fund
Class Name Class Y
Trading Symbol NIEYX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon International Equity Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class Y
*
$
93		 0.83
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 93 [1]
Expense Ratio, Percent 0.83% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • International equity markets rose on hopes for, and the subsequent arrival of, interest rate cuts, as well as enthusiasm regarding artificial intelligence (“AI”).
  • The Fund’s returns relative to the Index benefited from strong stock selection in the industrials and consumer discretionary sectors.
  • Overweight exposure to the information technology sector bolstered returns amid investor enthusiasm for AI early in the reporting period, while lack of energy exposure also proved beneficial.
  • Stock selection in financials proved the most significant detractor from relative returns by far.
  • On a regional basis, stock selection in emerging markets was weak, particularly in South Korea.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Share Class
1YR
5YR
10YR
Class Y Shares 23.80
%
 6.63
%
 4.27
%
MSCI EAFE
®
Index		 24.77
%
 8.20
%
 5.71
%
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 294,000,000
Holdings Count | Holdings 61
Advisory Fees Paid, Amount $ 2,205,575
Investment Company, Portfolio Turnover 95.93%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
294		 61
$
2,205,575		 95.93
%
Holdings [Text Block]
Portfolio Holdings (as of 9/30/24)
Country Allocation (Based on Net Assets)
Top Ten Holdings (Based on Net
Assets
)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net
Assets
)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund changed?
  • Effective September 1, 2024, the Fund's inv
    estm
    ent adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed, until February 1, 2025, to waive receipt of its fees and/or assume the direct expenses of the Fund so that the direct expenses of none of the Fund's share classes (excluding Rule 12b-1 fees, shareholder services fees, taxes, interest expense, brokerage commissions, commitment fees on borrowings and extraordinary expenses) exceed 0.77%. On February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this expense limitation agreement at any time.
This is a summary of certain changes to the Fund since October 1, 2023. For
mor
e complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block] Effective September 1, 2024, the Fund's inv
estm
ent adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed, until February 1, 2025, to waive receipt of its fees and/or assume the direct expenses of the Fund so that the direct expenses of none of the Fund's share classes (excluding Rule 12b-1 fees, shareholder services fees, taxes, interest expense, brokerage commissions, commitment fees on borrowings and extraordinary expenses) exceed 0.77%. On February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this expense limitation agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For
mor
e complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon Small Cap Growth Fund - Class I  
Shareholder Report [Line Items]  
Fund Name BNY Mellon Small Cap Growth Fund
Class Name Class I
Trading Symbol SSETX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon Small Cap Growth Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class I
*
$
109		 1.00
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 109 [1]
Expense Ratio, Percent 1.00% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • Small-cap, growth-oriented U.S. stocks generally rose during the period due to moderating inflation and positive outlooks surrounding lower borrowing costs as the U.S. Federal Reserve began to cut interest rates.
  • The greatest contributions to the Fund’s returns relative to the Index came from the industrials and consumer staples sectors.
  • Despite underweight exposure to industrials, the Fund’s stock selection within the sector bolstered returns. Overweight positioning and strong stock selection in consumer staples further enhanced returns.
  • Both stock selection and positioning in the information technology sector detracted from returns, as did stock selection in the consumer discretionary sector.
  • Secondary detractors from relative performance included stock selection in communication services and positioning in energy.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Share Class
1YR
5YR
10YR
Class I Shares 18.49
%
 10.20
%
 10.98
%
Russell 3000
®
Index (broad-based index)
*
 35.19
%
 15.26
%
 12.83
%
Russell 2000
®
Growth Index		 27.66
%
 8.82
%
 8.95
%
*
In accordance with regulatory changes requiring the Fund's primary benchmark to represent the overall applicable market, the Fund's primary prospectus benchmark changed to the indicated benchmark effective as of September 30, 2024.
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Feb. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 9,000,000
Holdings Count | Holdings 78
Advisory Fees Paid, Amount $ 0
Investment Company, Portfolio Turnover 43.90%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
9		 78
$
0		 43.90
%
Holdings [Text Block]
Portfolio Holdings (as of 9/30/24)
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net
Assets
)
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund changed?
  • Effective February 1, 2024, the Fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed, until February 1, 2025, to waive receipt of its fees and/or assume the direct expenses of the Fund so that the direct expenses of none of the Fund's share classes (excluding Rule 12b-1 fees, shareholder services fees, taxes, interest expense, brokerage commissions, commitment fees on borrowings and extraordinary expenses) exceed 1.00%. On February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this expense limitation agreement at any time.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block] Effective February 1, 2024, the Fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed, until February 1, 2025, to waive receipt of its fees and/or assume the direct expenses of the Fund so that the direct expenses of none of the Fund's share classes (excluding Rule 12b-1 fees, shareholder services fees, taxes, interest expense, brokerage commissions, commitment fees on borrowings and extraordinary expenses) exceed 1.00%. On February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this expense limitation agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon Small Cap Growth Fund - Class Y  
Shareholder Report [Line Items]  
Fund Name BNY Mellon Small Cap Growth Fund
Class Name Class Y
Trading Symbol SSYGX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon Small Cap Growth Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class Y
*
$
109		 1.00
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 109 [1]
Expense Ratio, Percent 1.00% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • Small-cap, growth-oriented U.S. stocks generally rose during the period due to moderating inflation and p
    ositiv
    e outlooks surrounding lower borrowing costs as the U.S. Federal Reserve began to cut interest rates.
  • The greatest contributions to the Fund’s returns relative to the Index came from the industrials and consumer staples sectors.
  • Despite underweight exposure to industrials, the Fund’s stock selection within the sector bolstered returns. Overweight positioning and strong stock selection in consumer staples further enhanced returns.
  • Both stock selection and positioning in the information technology sector detracted from
    returns
    , as did stock selection in the consumer discretionary sector.
  • Secondary detractors from relative performance included stock selection in communication services and positioning in energy.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Share Class
1YR
5YR
10YR
Class Y Shares 18.50
%
 10.20
%
 10.99
%
Russell 3000
®
Index (broad-based index)
*
 35.19
%
 15.26
%
 12.83
%
Russell 2000
®
Growth Index		 27.66
%
 8.82
%
 8.95
%
*
In accordance with regulatory changes requiring the Fund's primary benchmark to represent the overall applicable market, the Fund's primary prospectus benchmark changed to the indicated benchmark effective as of September 30, 2024.
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Feb. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 9,000,000
Holdings Count | Holdings 78
Advisory Fees Paid, Amount $ 0
Investment Company, Portfolio Turnover 43.90%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
9		 78
$
0		 43.90
%
Holdings [Text Block]
Portfolio Holdings (as of 9/30/24)
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund
changed
?
  • Effective February 1, 2024, the Fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed, until February 1, 2025, to waive receipt of its fees and/or assume the direct expenses of the Fund so that the direct expenses of none of the Fund's share classes (excluding Rule 12b-1 fees, shareholder services fees, taxes, interest expense, brokerage commissions, commitment fees on borrowings and
    extraordinary
    expenses) exceed 1.00%. On February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this expense limitation
    agreement
    at any time.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block]
Effective February 1, 2024, the Fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed, until February 1, 2025, to waive receipt of its fees and/or assume the direct expenses of the Fund so that the direct expenses of none of the Fund's share classes (excluding Rule 12b-1 fees, shareholder services fees, taxes, interest expense, brokerage commissions, commitment fees on borrowings and
extraordinary
expenses) exceed 1.00%. On February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this expense limitation
agreement
at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon Small Cap Value Fund - Class A  
Shareholder Report [Line Items]  
Fund Name BNY Mellon Small Cap Value Fund
Class Name Class A
Trading Symbol RUDAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon Small Cap Value Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
*
$
151		 1.38
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be
higher
.
Expenses Paid, Amount $ 151 [1]
Expense Ratio, Percent 1.38% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s
performance
?
  • Small-cap, value-oriented U.S. stocks generally rose during the period due to moderating inflation and positive outlooks as the U.S. Federal Reserve began to cut interest rates.
  • The greatest contributions to the Fund’s relative returns came from stock selection in industrials, real estate and energy, including positions in certain strong-performing, out-of-Index industrial sector names.
  • Secondary positive contributors to relative performance included positioning within health care, including underweight exposure to certain underperforming names in the Index.
  • The most significant detractors from relative performance included stock selection in the consumer discretionary, health care and financials sectors, along with overweight positions in certain underperforming energy sector names.
  • Additional detractors included stock selection in communication services and information technology, particularly due to the Fund's overweight exposure to certain underperforming names.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/
30
/24)
Class A Shares
1YR
5YR
10YR
with Maximum Sales Charge - 5.75% 11.56
%
 6.82
%
 7.33
%
without Sales Charge 18.38
%
 8.09
%
 7.96
%
Russell 3000
®
Index (broad-based index)
*
 35.19
%
 15.26
%
 12.83
%
Russell 2000
®
Value Index		 25.88
%
 9.29
%
 8.22
%
*
In accordance with regulatory changes requiring the Fund's primary benchmark to represent the overall applicable market, the Fund's primary prospectus benchmark changed to the indicated benchmark effective as of September 30, 2024.
Performance Inception Date Aug. 01, 2016
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 102,000,000
Holdings Count | Holdings 125
Advisory Fees Paid, Amount $ 1,062,493
Investment Company, Portfolio Turnover 44.75%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
102		 125
$
1,062,493		 44.75
%
Holdings [Text Block]
Portfolio Holdings (as of 9/
30
/24)
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the
investment
of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net
Assets
)
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the
investment
of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund changed?
  • Effective September 1, 2024, the Fund's
    investment
    adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed to waive a portion of the Fund's management fee in the amount of 0.15% of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block] Effective September 1, 2024, the Fund's
investment
adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed to waive a portion of the Fund's management fee in the amount of 0.15% of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon Small Cap Value Fund - Class C  
Shareholder Report [Line Items]  
Fund Name BNY Mellon Small Cap Value Fund
Class Name Class C
Trading Symbol BOSCX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon Small Cap Value Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class C
*
$
250		 2.30
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 250 [1]
Expense Ratio, Percent 2.30% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • Small-cap, value-oriented U.S. stocks generally rose during the period due to moderating inflation and positive outlooks as the U.S. Federal Reserve began to cut interest rates.
  • The greatest contributions to the Fund’s relative returns came from stock selection in industrials, real estate and energy, including positions in certain strong-performing, out-of-Index industrial sector names.
  • Secondary positive contributors to relative performance included positioning within health care, including underweight exposure to certain underperforming names in the Index.
  • The most significant detractors from relative performance included stock selection in the consumer discretionary, health care and financials sectors, along with overweight positions in certain underperforming energy sector names.
  • Additional detractors included stock selection in communication services and information technology, particularly due to the Fund's overweight exposure to certain underperforming names.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Class C Shares
1YR
5YR
10YR
with Maximum Deferred Sales Charge - 1.00% 16.32
%
**
 7.15
%
 7.21
%
without Deferred Sales Charge 17.32
%
 7.15
%
 7.21
%
Russell 3000
®
Index (broad-based index)
*
 35.19
%
 15.26
%
 12.83
%
Russell 2000
®
Value Index		 25.88
%
 9.29
%
 8.22
%
*
In accordance with regulatory changes requiring the Fund's primary benchmark to represent the overall applicable market, the Fund's primary prospectus benchmark changed to the indicated benchmark effective as of September 30, 2024.
**
The maximum contingent deferred sales charge for Class C shares is 1.00% for shares redeemed within one year of the date purchased.
Performance Inception Date Aug. 01, 2016
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 102,000,000
Holdings Count | Holdings 125
Advisory Fees Paid, Amount $ 1,062,493
Investment Company, Portfolio Turnover 44.75%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
102		 125
$
1,062,493		 44.75
%
Holdings [Text Block]
Portfolio Holdings (as of 9/30/24)
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net
Assets
)
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund changed?
  • Effective September 1, 2024, the Fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed to waive a portion of the Fund's management fee in the amount of 0.15% of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block] Effective September 1, 2024, the Fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed to waive a portion of the Fund's management fee in the amount of 0.15% of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon Small Cap Value Fund - Class I  
Shareholder Report [Line Items]  
Fund Name BNY Mellon Small Cap Value Fund
Class Name Class I
Trading Symbol STSVX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon Small Cap Value Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class I
*
$
114		 1.04
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 114 [1]
Expense Ratio, Percent 1.04% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • Small-cap, value-oriented U.S. stocks generally rose during the period due to moderating inflation and positive outlooks as the U.S. Federal Reserve began to cut interest rates.
  • The greatest contributions to the Fund’s relative returns came from stock selection in industrials, real estate and energy, including positions in certain strong-performing, out-of-Index industrial sector names.
  • Secondary positive contributors to relative performance included positioning within health care, including underweight exposure to certain underperforming names in the Index.
  • The most significant detractors from relative performance included stock selection in the consumer discretionary, health care and financials sectors, along with overweight positions in certain underperforming energy sector names.
  • Additional detractors included stock selection in communication services and information technology, particularly
    due
    to the Fund's overweight exposure to certain underperforming names.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Share Class
1YR
5YR
10YR
Class I Shares 18.75
%
 8.43
%
 8.24
%
Russell 3000
®
Index (broad-based index)
*
 35.19
%
 15.26
%
 12.83
%
Russell 2000
®
Value Index		 25.88
%
 9.29
%
 8.22
%
*
In accordance with regulatory changes requiring the Fund's primary benchmark to represent the overall applicable market, the Fund's primary prospectus benchmark changed to the indicated benchmark effective as of September 30, 2024.
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 102,000,000
Holdings Count | Holdings 125
Advisory Fees Paid, Amount $ 1,062,493
Investment Company, Portfolio Turnover 44.75%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
102		 125
$
1,062,493		 44.75
%
Holdings [Text Block]
Portfolio Holdings (as of 9/30/24)
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net
Assets
)
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund
changed
?
  • Effective September 1, 2024, the Fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed to waive a portion of the Fund's management fee in the amount of 0.15% of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you
may
review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block]
Effective September 1, 2024, the Fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed to waive a portion of the Fund's management fee in the amount of 0.15% of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you
may
review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon Small Cap Value Fund - Class Y  
Shareholder Report [Line Items]  
Fund Name BNY Mellon Small Cap Value Fund
Class Name Class Y
Trading Symbol BOSYX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon Small Cap Value Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class Y
*
$
111		 1.01
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 111 [1]
Expense Ratio, Percent 1.01% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • Small-cap, value-oriented U.S. stocks generally rose during the period due to moderating inflation and positive outlooks as the U.S. Federal Reserve began to cut interest rates.
  • The greatest contributions to the Fund’s relative returns came from stock selection in industrials, real estate and energy, including positions in certain strong-performing, out-of-Index industrial sector names.
  • Secondary positive contributors to relative performance included positioning within health care, including underweight exposure to certain underperforming names in the Index.
  • The most significant detractors from relative performance included stock selection in the consumer discretionary, health care and financials sectors, along with overweight positions in certain underperforming energy sector names.
  • Additional detractors included stock selection in communication services and information technology, particularly due to the Fund's overweight exposure to certain underperforming names.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Share Class
1YR
5YR
10YR
Class Y Shares 18.85
%
 8.50
%
 8.29
%
Russell 3000
®
Index (broad-based index)
*
 35.19
%
 15.26
%
 12.83
%
Russell 2000
®
Value Index		 25.88
%
 9.29
%
 8.22
%
*
In accordance with regulatory changes requiring the Fund's primary benchmark to represent the overall applicable market, the Fund's primary prospectus benchmark changed to the indicated benchmark effective as of September 30, 2024.
Performance Inception Date Aug. 01, 2016
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 102,000,000
Holdings Count | Holdings 125
Advisory Fees Paid, Amount $ 1,062,493
Investment Company, Portfolio Turnover 44.75%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/
30
/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
102		 125
$
1,062,493		 44.75
%
Holdings [Text Block]
Portfolio Holdings (as of 9/30/24)
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net
Assets
)
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund
changed
?
  • Effective
    September 1, 2024
    , the Fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed to waive a portion of the Fund's management fee in the amount of 0.15% of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block] Effective
September 1, 2024
, the Fund's investment adviser, BNY Mellon Investment Adviser, Inc., has contractually agreed to waive a portion of the Fund's management fee in the amount of 0.15% of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon Small/Mid Cap Growth Fund - Class A  
Shareholder Report [Line Items]  
Fund Name BNY Mellon Small/Mid Cap Growth Fund
Class Name Class A
Trading Symbol DBMAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon Small/Mid Cap Growth Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
*
$
109		 1.01
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 109 [1]
Expense Ratio, Percent 1.01% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • Small- and mid-cap, growth-oriented stocks generally rose during the period due to moderating inflation and positive outlooks as the U.S. Federal Reserve began to cut interest rates.
  • Strong stock selection within the industrials sector bolstered returns, as did the Fund’s overweight exposure to certain strong-performing, out-of-Index names in both industrials and communication services.
  • Secondary positive contributors to relative performance included positions in certain strong-performing, out-of-Index information technology names, as well as significantly overweight positions in certain outperforming health care holdings.
  • Stock selection in the information technology, consumer discretionary and health care sectors detracted from relative returns, as did overweight exposure to certain underperforming information technology names.
  • Positioning in the energy and consumer staples sectors — particularly overweight exposure to underperforming, out-of-Index names — also detracted from relative returns.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Class A Shares
1YR
5YR
10YR
with Maximum Sales Charge - 5.75% 8.90
%
 6.28
%
 8.76
%
without Sales Charge 15.56
%
 7.55
%
 9.41
%
Russell 3000
®
Index (broad-based index)
*
 35.19
%
 15.26
%
 12.83
%
Russell 2500
®
Growth Index		 25.20
%
 9.75
%
 9.98
%
*
In accordance with regulatory changes requiring the Fund's primary benchmark to represent the overall applicable market, the Fund's primary prospectus benchmark changed to the indicated benchmark effective as of September 30, 2024.
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 1,263,000,000
Holdings Count | Holdings 82
Advisory Fees Paid, Amount $ 10,739,614
Investment Company, Portfolio Turnover 48.92%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24
)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
1,263		 82
$
10,739,614		 48.92
%
Holdings [Text Block]
Portfolio Holdings (as of 9/30/24)
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of
cash
and cash
collateral
for securities loaned, if any.
Sector Allocation (Based
on
Net
Assets
)
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of
cash
and cash
collateral
for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund changed?
  • Effective September 1, 2024, 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 0.05% of the value of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
  • Effective May 1, 2024, the Fund considers small-cap and mid-cap companies to be those companies with total market capitalizations that are equal to or less than the total market capitalization of the largest company included in the Russell Midcap
    ®
    Index. As of January 31, 2024, the market capitalization of the largest company in the Russell Midcap
    ®
    Index was approximately $76.588 billion.
This is a summary of certain changes to the Fund since
October
1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block] Effective September 1, 2024, 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 0.05% of the value of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since
October
1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon Small/Mid Cap Growth Fund - Class C  
Shareholder Report [Line Items]  
Fund Name BNY Mellon Small/Mid Cap Growth Fund
Class Name Class C
Trading Symbol DBMCX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon Small/Mid Cap Growth Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class C
*
$
197		 1.84
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 197 [1]
Expense Ratio, Percent 1.84% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • Small- and mid-cap, growth-oriented stocks generally rose during the period due to moderating inflation and positive outlooks as the U.S. Federal Reserve began to cut interest rates.
  • Strong stock selection within the industrials sector bolstered returns, as did the Fund’s overweight exposure to certain strong-performing, out-of-Index names in both industrials and communication services.
  • Secondary positive contributors to relative performance included positions in certain strong-performing, out-of-Index information technology names, as well as significantly overweight positions in certain outperforming health care holdings.
  • Stock selection in the information technology, consumer discretionary and health care sectors detracted from relative returns, as did overweight exposure to certain underperforming information technology names.
  • Positioning in the energy and consumer staples sectors — particularly overweight exposure to underperforming, out-of-Index names — also detracted from relative returns.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Class C Shares
1YR
5YR
10YR
with Maximum Deferred Sales Charge - 1.00% 13.62
%
**
 6.69
%
 8.56
%
without Deferred Sales Charge 14.62
%
 6.69
%
 8.56
%
Russell 3000
®
Index (broad-based index)
*
 35.19
%
 15.26
%
 12.83
%
Russell 2500
®
Growth Index		 25.20
%
 9.75
%
 9.98
%
*
In accordance with regulatory changes requiring the Fund's primary benchmark to represent the overall applicable market, the Fund's primary prospectus benchmark changed to the indicated benchmark effective as of September 30, 2024.
**
The maximum contingent deferred sales charge for Class C shares is 1.00% for shares redeemed within one year of the date purchased.
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 1,263,000,000
Holdings Count | Holdings 82
Advisory Fees Paid, Amount $ 10,739,614
Investment Company, Portfolio Turnover 48.92%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
1,263		 82
$
10,739,614		 48.92
%
Holdings [Text Block]
Portfolio Holdings (as of 9/30/24)
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net Assets)
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund changed?
  • Effective September 1, 2024, 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 0.05% of the value of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
  • Effective May 1, 2024, the Fund considers small-cap and mid-cap companies to be those companies with total market capitalizations that are equal to or less than the total market capitalization of the largest company included in the Russell Midcap
    ®
    Index. As of January 31, 2024, the market capitalization of the largest company in the Russell Midcap
    ®
    Index was approximately $76.588 billion.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information,
you
may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block]
Effective September 1, 2024, 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 0.05% of the value of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information,
you
may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon Small/Mid Cap Growth Fund - Class I  
Shareholder Report [Line Items]  
Fund Name BNY Mellon Small/Mid Cap Growth Fund
Class Name Class I
Trading Symbol SDSCX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon Small/Mid Cap Growth Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class I
*
$
83		 0.77
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 83 [1]
Expense Ratio, Percent 0.77% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • Small- and mid-cap, growth-oriented stocks generally rose during the period due to moderating inflation and positive outlooks as the U.S. Federal Reserve began to cut interest rates.
  • Strong stock selection within the industrials sector bolstered returns, as did the Fund’s overweight exposure to certain strong-performing, out-of-Index names in both industrials and communication services.
  • Secondary positive contributors to relative performance included positions in certain strong-performing, out-of-Index information technology names, as well as significantly overweight positions in certain outperforming health care holdings.
  • Stock selection in the information technology, consumer discretionary and health care sectors detracted from relative returns, as did overweight exposure to certain underperforming information technology names.
  • Positioning in the energy and consumer staples sectors — particularly overweight exposure to underperforming, out-of-Index names — also detracted from relative returns.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Share Class
1YR
5YR
10YR
Class I Shares 15.86
%
 7.80
%
 9.68
%
Russell 3000
®
Index (broad-based index)
*
 35.19
%
 15.26
%
 12.83
%
Russell 2500
®
Growth Index		 25.20
%
 9.75
%
 9.98
%
*
In accordance with regulatory changes requiring the Fund's primary benchmark to represent the overall applicable market, the Fund's primary prospectus benchmark changed to the indicated benchmark effective as of September 30, 2024.
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 1,263,000,000
Holdings Count | Holdings 82
Advisory Fees Paid, Amount $ 10,739,614
Investment Company, Portfolio Turnover 48.92%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
1,263		 82
$
10,739,614		 48.92
%
Holdings [Text Block]
Portfolio Holdings (as of 9/30/24)
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities
loaned
, if any.
Sector Allocation (Based on Net Assets)
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities
loaned
, if any.
Material Fund Change [Text Block]
How has the Fund changed?
  • Effective September 1, 2024, 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 0.05% of the value of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
  • Effective May 1, 2024, the Fund considers small-cap and mid-cap companies to be those companies with total market capitalizations that are equal to or less than the total market capitalization of the largest company included in the Russell Midcap
    ®
    Index. As of January 31, 2024, the market capitalization of the largest company in the Russell Midcap
    ®
    Index was approximately $76.588 billion.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block] Effective September 1, 2024, 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 0.05% of the value of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon Small/Mid Cap Growth Fund - Class Y  
Shareholder Report [Line Items]  
Fund Name BNY Mellon Small/Mid Cap Growth Fund
Class Name Class Y
Trading Symbol DBMYX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon Small/Mid Cap Growth Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class Y
*
$
71		 0.66
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 71 [1]
Expense Ratio, Percent 0.66% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • Small- and mid-cap, growth-oriented stocks generally rose during the period due to moderating inflation and positive outlooks as the U.S. Federal Reserve began to cut interest rates.
  • Strong stock selection within the industrials sector bolstered returns, as did the Fund’s overweight exposure to certain strong-performing, out-of-Index names in both industrials and communication services.
  • Secondary positive contributors to relative performance included positions in certain strong-performing, out-of-Index information technology names, as well as significantly overweight positions in certain outperforming health care holdings.
  • Stock selection in the information technology, consumer discretionary and health care sectors detracted from relative returns, as did overweight exposure to certain underperforming information technology names.
  • Positioning in the energy and consumer staples sectors — particularly overweight exposure to underperforming, out-of-Index names — also detracted from relative returns.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF 9/30/24)
Share Class
1YR
5YR
10YR
Class Y Shares 16.01
%
 7.90
%
 9.79
%
Russell 3000
®
Index (broad-based index)
*
35.19
%
 15.26
%
 12.83
%
Russell 2500
®
Growth Index		 25.20
%
 9.75
%
 9.98
%
*
In accordance with regulatory changes requiring the Fund's primary benchmark to represent the overall applicable market, the Fund's primary prospectus benchmark changed to the indicated benchmark effective as of September 30, 2024.
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 1,263,000,000
Holdings Count | Holdings 82
Advisory Fees Paid, Amount $ 10,739,614
Investment Company, Portfolio Turnover 48.92%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF 9/30/24)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
1,263		 82
$
10,739,614		 48.92
%
Holdings [Text Block]
Portfolio Holdings (as of 9/30/24)
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net Assets)
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund changed?
  • Effective September 1, 2024, 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 0.05% of the value of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
  • Effective May 1, 2024, the Fund considers small-cap and mid-cap companies to be those companies with total market capitalizations that are equal to or less than the total market capitalization of the largest company included in the Russell Midcap
    ®
    Index. As of January 31, 2024, the market capitalization of the largest company in the Russell Midcap
    ®
    Index was approximately $76.588 billion.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block] Effective September 1, 2024, 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 0.05% of the value of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
BNY Mellon Small/Mid Cap Growth Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name BNY Mellon Small/Mid Cap Growth Fund
Class Name Class Z
Trading Symbol DBMZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about BNY Mellon Small/Mid Cap Growth Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
bny.com/investments/literaturecenter
. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1-800-373-9387
Additional Information Email info@bny.com
Additional Information Website bny.com/investments/literaturecenter
Expenses [Text Block]
What were the Fund’s costs for the last year?
(based on a hypothetical $10,000 investment)
Share Class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class Z
*
$
94		 0.87
%
*
During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.
Expenses Paid, Amount $ 94 [1]
Expense Ratio, Percent 0.87% [1]
Factors Affecting Performance [Text Block]
What affected the Fund’s performance?
  • Small- and mid-cap, growth-oriented stocks generally rose during the period due to moderating inflation and positive outlooks as the U.S. Federal Reserve began to cut interest rates.
  • Strong stock selection within the industrials sector bolstered returns, as did the Fund’s overweight exposure to certain strong-performing, out-of-Index names in both industrials and communication services.
  • Secondary positive contributors to relative performance included positions in certain strong-performing, out-of-Index information technology names, as well as significantly overweight positions in certain outperforming health care holdings.
  • Stock selection in the information technology, consumer discretionary and health care sectors detracted from relative returns, as did overweight exposure to certain underperforming information technology names.
  • Positioning in the energy and consumer staples sectors — particularly overweight exposure to underperforming, out-of-Index names — also detracted from relative returns.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of the Fund’s future performance.
Line Graph [Table Text Block]
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (AS OF
9/30/24
)
Share Class
1YR
5YR
10YR
Class Z Shares 15.77
%
 7.70
%
 9.62
%
Russell 3000
®
Index (broad-based index)
*
 35.19
%
 15.26
%
 12.83
%
Russell 2500
®
Growth Index		 25.20
%
 9.75
%
 9.98
%
*
In accordance with regulatory changes requiring the Fund's primary benchmark to represent the overall applicable market, the Fund's primary prospectus benchmark changed to the indicated benchmark effective as of September 30, 2024.
Performance Inception Date Jan. 19, 2018
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For more current information visit
bny.com/investments/literaturecenter
.
Net Assets $ 1,263,000,000
Holdings Count | Holdings 82
Advisory Fees Paid, Amount $ 10,739,614
Investment Company, Portfolio Turnover 48.92%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (AS OF
9/30/2
4)

Fund Size (Millions)

Number of Holdings
Total Advisory Fee Paid During
Period

Annual Portfolio Turnover
$
1,263		 82
$
10,739,614		 48.92
%
Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Sector Allocation (Based on Net Assets)
Largest Holdings [Text Block]
Top Ten Holdings (Based on Net Assets)
*
* Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.
Material Fund Change [Text Block]
How has the Fund changed?
  • Effective September 1, 2024, 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 0.05% of the value of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
  • Effective May 1, 2024, the Fund considers small-cap and mid-cap companies to be those companies with total market capitalizations that are equal to or less than the total market capitalization of the largest company included in the Russell Midcap
    ®
    Index. As of January 31, 2024, the market capitalization of the largest company in the Russell Midcap
    ®
    Index was approximately $76.588 billion.
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Material Fund Change Expenses [Text Block] Effective September 1, 2024, 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 0.05% of the value of the Fund's average daily net assets until February 1, 2025. On or after February 1, 2025, BNY Mellon Investment Adviser, Inc. may terminate this waiver agreement at any time.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since October 1, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by
January 31, 2025 at
bny.com/investments/literaturecenter
 
or upon request at 1-800-373-9387.
Updated Prospectus Phone Number 1-800-373-9387
Updated Prospectus Web Address bny.com/investments/literaturecenter
[1] During the period, fees were waived and/or expenses reimbused pursuant to an agreement with the Fund's investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.