v3.26.1
Shareholder Report
6 Months Ended
Jun. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name VALUE LINE ASSET ALLOCATION FUND INC
Entity Central Index Key 0000904170
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
C000162154  
Shareholder Report [Line Items]  
Fund Name Value Line Asset Allocation Fund, Inc.
Class Name Institutional
Trading Symbol VLAIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Value Line Asset Allocation Fund, Inc. (the "Fund") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.vlfunds.com. You can also request this information by contacting us at 1-800-243-2729 or investorservices@vlfunds.com.
Additional Information Phone Number 1-800-243-2729
Additional Information Email <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 14.4px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">investorservices@vlfunds.com</span>
Additional Information Website <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 14.4px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">www.vlfunds.com</span>
Expenses [Text Block]

What were the Fund costs for last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Class
$46
0.94%Footnote Reference*
Footnote Description
Footnote*
Annualized.
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.94% [1]
AssetsNet $ 299,042,851
Holdings Count | Holding 118
InvestmentCompanyPortfolioTurnover 16.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$299,042,851
# of Portfolio Holdings
118
Portfolio Turnover Rate
16%
Holdings [Text Block]

Asset Allocation (% of Net Assets)

Group By Asset Type Chart
Table Summary
Value
Value
Common Stocks
61.8%
Bonds & Notes
34.5%
Cash & Other Assets - Net
3.7%

Common Stock Sectors (% of Common Stocks)*

Table Summary
Industrials
31.8%
Information Technology
30.3%
Financials
13.9%
Healthcare
8.4%
Consumer Staples
8.3%
Consumer Discretionary
7.3%

* Excludes Short-term Investments, if any. 

Bonds & Notes Sectors (% of Bonds & Notes)*

Table Summary
Government
43.9%
Residential Mortgage-Backed Securities
20.1%
Financial
11.0%
Consumer, Non-cyclical
6.4%
Consumer, Cyclical
4.3%
Communications
3.9%
Energy
3.5%
Technology
2.0%
Utilities
1.8%
Basic Materials
1.7%
Industrial
1.4%
Largest Holdings [Text Block]

Ten Largest Holdings (% of Net Assets)*

Table Summary
Republic Services, Inc.
4.6%
Stryker Corp.
4.4%
Cadence Design Systems, Inc.
4.1%
ServiceNow, Inc.
4.1%
Costco Wholesale Corp.
3.8%
Motorola Solutions, Inc.
3.5%
Marriott International, Inc.
3.5%
Lennox International, Inc.
3.3%
Parker-Hannifin Corp.
2.9%
TransDigm Group, Inc.
2.8%
Updated Prospectus Phone Number 800-243-2729
Updated Prospectus Email Address <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 14.4px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">investorservices@vlfunds.com</span>
C000020616  
Shareholder Report [Line Items]  
Fund Name Value Line Asset Allocation Fund, Inc.
Class Name Investor
Trading Symbol VLAAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Value Line Asset Allocation Fund, Inc. (the "Fund") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at www.vlfunds.com. You can also request this information by contacting us at 1-800-243-2729 or investorservices@vlfunds.com.
Additional Information Phone Number 1-800-243-2729
Additional Information Email <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 14.4px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">investorservices@vlfunds.com</span>
Additional Information Website <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 14.4px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">www.vlfunds.com</span>
Expenses [Text Block]

What were the Fund costs for last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Class
$58
1.19%Footnote Reference*
Footnote Description
Footnote*
Annualized.
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.19% [2]
AssetsNet $ 299,042,851
Holdings Count | Holding 118
InvestmentCompanyPortfolioTurnover 16.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets
$299,042,851
# of Portfolio Holdings
118
Portfolio Turnover Rate
16%
Holdings [Text Block]

Asset Allocation (% of Net Assets)

Group By Asset Type Chart
Table Summary
Value
Value
Common Stocks
61.8%
Bonds & Notes
34.5%
Cash & Other Assets - Net
3.7%

Common Stock Sectors (% of Common Stocks)*

Table Summary
Industrials
31.8%
Information Technology
30.3%
Financials
13.9%
Healthcare
8.4%
Consumer Staples
8.3%
Consumer Discretionary
7.3%

* Excludes Short-term Investments, if any. 

Bonds & Notes Sectors (% of Bonds & Notes)*

Table Summary
Government
43.9%
Residential Mortgage-Backed Securities
20.1%
Financial
11.0%
Consumer, Non-cyclical
6.4%
Consumer, Cyclical
4.3%
Communications
3.9%
Energy
3.5%
Technology
2.0%
Utilities
1.8%
Basic Materials
1.7%
Industrial
1.4%
Largest Holdings [Text Block]

Ten Largest Holdings (% of Net Assets)*

Table Summary
Republic Services, Inc.
4.6%
Stryker Corp.
4.4%
Cadence Design Systems, Inc.
4.1%
ServiceNow, Inc.
4.1%
Costco Wholesale Corp.
3.8%
Motorola Solutions, Inc.
3.5%
Marriott International, Inc.
3.5%
Lennox International, Inc.
3.3%
Parker-Hannifin Corp.
2.9%
TransDigm Group, Inc.
2.8%
Updated Prospectus Phone Number 800-243-2729
Updated Prospectus Email Address <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 14.4px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">investorservices@vlfunds.com</span>
[1] Annualized.
[2] Annualized.