3.24.4 html 186 77 1 true 46 0 false 2 false false R1.htm 010000 - Disclosure - Form N-1A Cover Sheet http://xbrl.sec.gov/rr/role/N1aCover Form N-1A Cover Risk/Return 1 false false R2.htm 010001 - Disclosure - Investment Objectives and Goals Sheet http://xbrl.sec.gov/rr/role/RiskReturn Investment Objectives and Goals Risk/Return 2 false false R3.htm 010002 - Disclosure - Fees and Expenses Sheet http://xbrl.sec.gov/rr/role/FeesAndExpenses Fees and Expenses Risk/Return 3 false false R4.htm 010003 - Disclosure - Investment Strategy Sheet http://xbrl.sec.gov/rr/role/InvestmentStrategy Investment Strategy Risk/Return 4 false false R5.htm 010004 - Disclosure - Investment Risks Sheet http://xbrl.sec.gov/rr/role/InvestmentRisks Investment Risks Risk/Return 5 false false R6.htm 010005 - Disclosure - Performance Management Sheet http://xbrl.sec.gov/rr/role/PerformanceManagement Performance Management Risk/Return 6 false false R7.htm 020010 - Disclosure - Shareholder Fees Sheet http://xbrl.sec.gov/rr/role/ShareholderFeesData Shareholder Fees Risk/Return 7 false false R8.htm 020020 - Disclosure - Annual Fund Operating Expenses Sheet http://xbrl.sec.gov/rr/role/OperatingExpensesData Annual Fund Operating Expenses Risk/Return 8 false false R9.htm 020030 - Disclosure - Expense Example Sheet http://xbrl.sec.gov/rr/role/ExpenseExample Expense Example Risk/Return 9 false false R10.htm 020040 - Disclosure - Expense Example, No Redemption Sheet http://xbrl.sec.gov/rr/role/ExpenseExampleNoRedemption Expense Example, No Redemption Risk/Return 10 false false R11.htm 020050 - Disclosure - Annual Total Returns Sheet http://xbrl.sec.gov/rr/role/BarChartData Annual Total Returns Risk/Return 11 false false R12.htm 020060 - Disclosure - Average Annual Total Returns Sheet http://xbrl.sec.gov/rr/role/PerformanceTableData Average Annual Total Returns Risk/Return 12 false false R13.htm 020100 - Document - Risk/Return Summary {Unlabeled} - BNY Mellon Dynamic Value Fund - BNY Mellon Dynamic Value Fund Sheet http://www.dreyfus.com/20240831/role/DocumentRiskReturnSummaryUnlabeledBNYMellonDynamicValueFundBNYMellonDynamicValueFund Risk/Return Summary- BNY Mellon Dynamic Value Fund - BNY Mellon Dynamic Value Fund Risk/Return 13 false false R14.htm 020101 - Disclosure - Risk/Return Detail Data {Elements} - BNY Mellon Dynamic Value Fund - BNY Mellon Dynamic Value Fund Sheet http://www.dreyfus.com/20240831/role/DisclosureRiskReturnDetailDataElementsBNYMellonDynamicValueFundBNYMellonDynamicValueFund Risk/Return Detail Data- BNY Mellon Dynamic Value Fund - BNY Mellon Dynamic Value Fund Risk/Return 14 false false R15.htm 020102 - Document - Risk/Return Summary {Unlabeled} - BNY Mellon Opportunistic Midcap Value Fund - BNY Mellon Opportunistic Midcap Value Fund Sheet http://www.dreyfus.com/20240831/role/DocumentRiskReturnSummaryUnlabeledBNYMellonOpportunisticMidcapValueFundBNYMellonOpportunisticMidcapValueFund Risk/Return Summary- BNY Mellon Opportunistic Midcap Value Fund - BNY Mellon Opportunistic Midcap Value Fund Risk/Return 15 false false R16.htm 020103 - Disclosure - Risk/Return Detail Data {Elements} - BNY Mellon Opportunistic Midcap Value Fund - BNY Mellon Opportunistic Midcap Value Fund Sheet http://www.dreyfus.com/20240831/role/DisclosureRiskReturnDetailDataElementsBNYMellonOpportunisticMidcapValueFundBNYMellonOpportunisticMidcapValueFund Risk/Return Detail Data- BNY Mellon Opportunistic Midcap Value Fund - BNY Mellon Opportunistic Midcap Value Fund Risk/Return 16 false false R17.htm 020104 - Document - Risk/Return Summary {Unlabeled} - BNY Mellon Opportunistic Small Cap Fund - BNY Mellon Opportunistic Small Cap Fund Sheet http://www.dreyfus.com/20240831/role/DocumentRiskReturnSummaryUnlabeledBNYMellonOpportunisticSmallCapFundBNYMellonOpportunisticSmallCapFund Risk/Return Summary- BNY Mellon Opportunistic Small Cap Fund - BNY Mellon Opportunistic Small Cap Fund Risk/Return 17 false false R18.htm 020105 - Disclosure - Risk/Return Detail Data {Elements} - BNY Mellon Opportunistic Small Cap Fund - BNY Mellon Opportunistic Small Cap Fund Sheet http://www.dreyfus.com/20240831/role/DisclosureRiskReturnDetailDataElementsBNYMellonOpportunisticSmallCapFundBNYMellonOpportunisticSmallCapFund Risk/Return Detail Data- BNY Mellon Opportunistic Small Cap Fund - BNY Mellon Opportunistic Small Cap Fund Risk/Return 18 false false R19.htm 020106 - Document - Risk/Return Summary {Unlabeled} - BNY Mellon Technology Growth Fund - BNY Mellon Technology Growth Fund Sheet http://www.dreyfus.com/20240831/role/DocumentRiskReturnSummaryUnlabeledBNYMellonTechnologyGrowthFundBNYMellonTechnologyGrowthFund Risk/Return Summary- BNY Mellon Technology Growth Fund - BNY Mellon Technology Growth Fund Risk/Return 19 false false R20.htm 020107 - Disclosure - Risk/Return Detail Data {Elements} - BNY Mellon Technology Growth Fund - BNY Mellon Technology Growth Fund Sheet http://www.dreyfus.com/20240831/role/DisclosureRiskReturnDetailDataElementsBNYMellonTechnologyGrowthFundBNYMellonTechnologyGrowthFund Risk/Return Detail Data- BNY Mellon Technology Growth Fund - BNY Mellon Technology Growth Fund Risk/Return 20 false false All Reports Book All Reports ck0000914775-20240831.htm ck0000914775-20240831.xsd ck0000914775-20240831_def.xml ck0000914775-20240831_lab.xml ck0000914775-20240831_pre.xml img_1e4a4199f1e44f3.jpg img_25bdb2662d5a4f2.jpg img_25d922b4cc2f4f4.jpg img_f3927c3979d74f5.jpg img_fc41e8116ee24f2.jpg http://xbrl.sec.gov/dei/2024 http://xbrl.sec.gov/oef/2024 true false