S 000000342 Summary1 [Member] Prospectus Summary Prospectus Summary S 000000342 [Member] BNY Mellon Balanced Opportunity Fund BNY Mellon Balanced Opportunity Fund C 000000867 [Member] A A C 000000869 [Member] C C C 000000870 [Member] I I C 000174004 [Member] Y Y C 000001397 [Member] Z Z cik0001224568_PrincipalRisks2Member [Member] Principal Risks Principal Risks cik0001224568_Managementrisk2Member [Member] · Management risk · Management risk cik0001224568_Correlationrisk2Member [Member] · Correlation risk · Correlation risk cik0001224568_Liquidityrisk2Member [Member] · Liquidity risk · Liquidity risk cik0001224568_Issuerrisk2Member [Member] · Issuer risk · Issuer risk cik0001224568_Marketrisk2Member [Member] · Market risk · Market risk cik0001224568_Risksofstockinvesting2Member [Member] · Risks of stock investing · Risks of stock investing cik0001224568_Growthandvaluestockrisk2Member [Member] · Growth and value stock risk · Growth and value stock risk cik0001224568_Foreigninvestmentrisk2Member [Member] · Foreign investment risk · Foreign investment risk cik0001224568_Fixed-incomemarketrisk2Member [Member] · Fixed-income market risk · Fixed-income market risk cik0001224568_Interestraterisk2Member [Member] · Interest rate risk · Interest rate risk cik0001224568_Creditrisk2Member [Member] · Credit risk · Credit risk cik0001224568_SP500reflectsnodeductionsforfeesexpensesortaxes31Member [Member] S&P 500, reflects no deductions for fees, expenses or taxes S&P 500, reflects no deductions for fees, expenses or taxes cik0001224568_BloombergAggregatereflectsnodeductionsforfeesexpensesortaxes32Member [Member] Bloomberg Aggregate, reflects no deductions for fees, expenses or taxes Bloomberg Aggregate, reflects no deductions for fees, expenses or taxes cik0001224568_CustomizedBlendedIndex60SP500and40BloombergAggregatereflectsnodeductionsforfeesexpensesortaxes33Member [Member] Customized Blended Index (60% S&P 500 and 40% Bloomberg Aggregate), reflects no deductions for fees, expenses or taxes Customized Blended Index (60% S&P 500 and 40% Bloomberg Aggregate), reflects no deductions for fees, expenses or taxes S 000000342 Summary2 [Member] Prospectus Summary Prospectus Summary C 000000872 [Member] J J cik0001224568_SP500reflectsnodeductionsforfeesexpensesortaxes34Member [Member] S&P 500, reflects no deductions for fees, expenses or taxes S&P 500, reflects no deductions for fees, expenses or taxes cik0001224568_BloombergAggregatereflectsnodeductionsforfeesexpensesortaxes35Member [Member] Bloomberg Aggregate, reflects no deductions for fees, expenses or taxes Bloomberg Aggregate, reflects no deductions for fees, expenses or taxes cik0001224568_CustomizedBlendedIndex60SP500and40BloombergAggregatereflectsnodeductionsforfeesexpensesortaxes36Member [Member] Customized Blended Index (60% S&P 500 and 40% Bloomberg Aggregate), reflects no deductions for fees, expenses or taxes Customized Blended Index (60% S&P 500 and 40% Bloomberg Aggregate), reflects no deductions for fees, expenses or taxes Document [Axis] Series [Axis] Prospectus Prospectus [Table] Risk/Return: Performance Measure [Axis] Class [Axis] Before Taxes After Taxes on Distributions After Taxes on Distributions and Sales Risk [Axis] All Risks [Member] Risk Lose Money [Member] Risk Not Insured [Member] Risk Nondiversified Status [Member] Risk Not Insured Depository Institution [Member] Risk Money Market Fund Price Fluctuates [Member] Risk Money Market Fund May Impose Fees or Suspend Sales [Member] Risk Money Market Fund Sponsor May Not Provide Support [Member] Risk Money Market Fund May Not Preserve Dollar [Member] Risks [Table Text Block] Risks [Table Text Block]