VALUE LINE ASSET ALLOCATION FUND INC VALUE LINE ASSET ALLOCATION FUND INC Institutional Growth Style Risk [Member] Market Risk [Member] Equity Securities Risk [Member] Sector Allocation Risk [Member] Asset Allocation Risk [Member] Investment Company Risk [Member] Interest Rate and Reinvestment Risk [Member] Inflation Risk [Member] Below Investment Grade Credit Risk [Member] Prepayment and Extension Risk [Member] Derivatives Risk [Member] Government Securities Risk [Member] Mortgage-Backed/Asset-Backed Securities Risk [Member] Ratings Reliance Risk [Member] Ranking Systems Risk [Member] Small and Mid-Sized Company Risk [Member] Active Management Risk [Member] Liquidity Risk [Member] Market Disruption Risk [Member] Foreign Investments Risk [Member] Cybersecurity Risk [Member] Credit Risk [Member] S&P 500® Index (reflects no deduction for fees, expenses or taxes) 60/40 S&P 500® Index/Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses or taxes) Mortgage Backed Asset Backed Securities Risk Member index_6040_ SP_500_ Index Bloomberg_ US_ Aggregate_ Bond_ Index_reflects_no_deduction_for_fees_expenses_or_taxes Member Asset Allocation Risk Member C000020616 Member CreditRiskMember Cybersecurity Risk Member Interest Rate And Reinvestment Risk Member Prepayment And Extension Risk Member Active Management Risk Member Investment Company Risk Member Liquidity Risk Member Market Risk Member Small And Mid Sized Company Risk Member Ranking Systems Risk Member S000007558 Member Derivatives Risk Member Equity Securities Risk Member Government Securities Risk Member Ratings Reliance Risk Member Growth Style Risk Member Below Investment Grade Credit Risk Member index_ SP_500_ Index_reflects_no_deduction_for_fees_expenses_or_taxes Member C000162154 Member Inflation Risk Member Foreign Investments Risk Member Market Disruption Risk Member Sector Allocation Risk Member