2.4.0.8000001 - Document - Document and Entity Informationtruefalsefalse1false falsefalsedefaulthttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:001true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:2false 2dei_DocumentTypedei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00485BPOSfalsefalsefalsedei:submissionTypeItemTypestringThe type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word "Other".No definition available.false0Document Type3false 2dei_DocumentPeriodEndDatedei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002012-08-31falsefalsetruexbrli:dateItemTypedateThe end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.No definition available.false0Document Period End Date4false 2dei_EntityRegistrantNamedei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Advantage Funds, Inc.falsefalsefalsexbrli:normalizedStringItemTypenormalizedstringThe exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation 12B -Number 240 -Section 12b -Subsection 1 false0Registrant Name5false 2dei_EntityCentralIndexKeydei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse000000914775falsefalsefalsedei:centralIndexKeyItemTypenaA unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation 12B -Number 240 -Section 12b -Subsection 1 false0Central Index Key6false 2dei_AmendmentFlagdei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsexbrli:booleanItemTypenaIf the value is true, then the document is an amendment to previously-filed/accepted document.No definition available.false0Amendment Flag7false 2dei_DocumentCreationDatedei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002013-06-25falsefalsetruexbrli:dateItemTypedateThe date the document was made available and submitted, in CCYY-MM-DD format. The date of submission, date of acceptance by the recipient, and the document effective date are all potentially different.No definition available.false0Document Creation Date8false 2dei_DocumentEffectiveDatedei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002013-07-01falsefalsetruexbrli:dateItemTypedateThe date when a document, upon receipt and acceptance, becomes officially effective, in CCYY-MM-DD format. Usually it is a system-assigned date time value, but it may be declared by the submitter in some cases.No definition available.false0Document Effective Date9false 2rr_ProspectusDaterr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002013-07-01falsefalsetruexbrli:dateItemTypedateThe date of the prospectus.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 1 -Subsection a -Paragraph 3 false0Prospectus Date10false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2false truefalseS000019932Member_C000055938Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Global Absolute Return Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000019932Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000055938Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Global Absolute Return Fund | Class A11true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:12false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DGPAXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol13false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse3false truefalseS000019932Member_C000055939Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Global Absolute Return Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000019932Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Crr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000055939Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Global Absolute Return Fund | Class C14true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:15false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DGPCXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol16false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse4false truefalseS000019932Member_C000055940Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Global Absolute Return Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000019932Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000055940Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Global Absolute Return Fund | Class I17true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:18false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DGPIXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol19false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse5false truefalseS000019932Member_C000130430Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Global Absolute Return Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000019932Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Yrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000130430Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Global Absolute Return Fund | Class Y20true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:21false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DGPYXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol22false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse6false truefalseS000031204Member_C000096886Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Global Dynamic Bond Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000031204Memberdei_LegalEntityAxisexplicitMemberfalsefalseArr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000096886Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Global Dynamic Bond Fund | A23true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:24false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DGDAXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol25false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse7false truefalseS000031204Member_C000096887Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Global Dynamic Bond Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000031204Memberdei_LegalEntityAxisexplicitMemberfalsefalseCrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000096887Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Global Dynamic Bond Fund | C26true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:27false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DGDCXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol28false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse8false truefalseS000031204Member_C000096888Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Global Dynamic Bond Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000031204Memberdei_LegalEntityAxisexplicitMemberfalsefalseIrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000096888Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Global Dynamic Bond Fund | I29true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:30false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DGDIXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol31false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse9false truefalseS000031204Member_C000130432Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Global Dynamic Bond Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000031204Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Yrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000130432Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Global Dynamic Bond Fund | Class Y32true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:33false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DGDYXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol34false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse10false truefalseS000028808Member_C000088313Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Global Real Return Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000028808Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000088313Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Global Real Return Fund | Class A35true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:36false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DRRAXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol37false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse11false truefalseS000028808Member_C000088314Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Global Real Return Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000028808Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Crr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000088314Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Global Real Return Fund | Class C38true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:39false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DRRCXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol40false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse12false truefalseS000028808Member_C000088315Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Global Real Return Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000028808Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000088315Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Global Real Return Fund | Class I41true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:42false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DRRIXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol43false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse13false truefalseS000028808Member_C000130431Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Global Real Return Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000028808Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Yrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000130431Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Global Real Return Fund | Class Y44true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:45false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DRRYXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol46false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse14false truefalseS000000461Member_C000001288Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Opportunistic Midcap Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000000461Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000001288Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Opportunistic Midcap Value Fund | Class A47true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:48false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DMCVXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol49false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse15false truefalseS000000461Member_C000064720Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Opportunistic Midcap Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000000461Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Crr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000064720Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Opportunistic Midcap Value Fund | Class C50true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:51false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DVLCXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol52false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse16false truefalseS000000461Member_C000064721Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Opportunistic Midcap Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000000461Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000064721Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Opportunistic Midcap Value Fund | Class I53true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:54false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DVLIXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol55false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse17false truefalseS000000461Member_C000130426Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Opportunistic Midcap Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000000461Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Yrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000130426Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Opportunistic Midcap Value Fund | Class Y56true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:57false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DMCYXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol58false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse18false truefalseS000000498Member_C000001358Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Strategic Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000000498Memberdei_LegalEntityAxisexplicitMemberfalsefalseDreyfus Strategic Value Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000001358Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Strategic Value Fund | Dreyfus Strategic Value Fund - Class A59true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:60false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DAGVXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol61false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse19false truefalseS000000498Member_C000001360Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Strategic Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000000498Memberdei_LegalEntityAxisexplicitMemberfalsefalseDreyfus Strategic Value Fund - Class Crr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000001360Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Strategic Value Fund | Dreyfus Strategic Value Fund - Class C62true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:63false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DCGVXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol64false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse20false truefalseS000000498Member_C000001361Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Strategic Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000000498Memberdei_LegalEntityAxisexplicitMemberfalsefalseDreyfus Strategic Value Fund - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000001361Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Strategic Value Fund | Dreyfus Strategic Value Fund - Class I65true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:66false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DRGVXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol67false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse21false truefalseS000000498Member_C000130427Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Strategic Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000000498Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Yrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000130427Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Strategic Value Fund | Class Y68true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:69false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DRGYXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol70false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse22false truefalseS000000499Member_C000001363Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Structured Midcap Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000000499Memberdei_LegalEntityAxisexplicitMemberfalsefalseDreyfus Structured Midcap Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000001363Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Structured Midcap Fund | Dreyfus Structured Midcap Fund - Class A71true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:72false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DPSAXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol73false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse23false truefalseS000000499Member_C000001365Memberhttp://www.sec.gov/CIK0000914775duration2012-08-31T00:00:002012-08-31T00:00:00falsefalseDreyfus Structured Midcap Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_S000000499Memberdei_LegalEntityAxisexplicitMemberfalsefalseDreyfus Structured Midcap Fund - Class Crr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000914775_C000001365Memberrr_ProspectusShareClassAxisexplicitMembernanafalse0Dreyfus Structured Midcap Fund | Dreyfus Structured Midcap Fund - Class C74true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:75false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00DPSCXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol76false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse24false 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