v3.25.2
Shareholder Report
 6 Months Ended
Apr. 30, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Virtus Alternative Solutions Trust
Entity Central Index Key 0001589756
Entity Investment Company Type N-1A
Document Period End Date Apr. 30, 2025
C000159801 [Member]  
Shareholder Report [Line Items]  
Fund Name Virtus Duff & Phelps Select MLP and Energy Fund
Class Name Class A
Trading Symbol VLPAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Virtus Duff & Phelps Select MLP and Energy Fund (“Fund”) for the period of November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.virtus.com/investor-resources/mutual-fund-documents. You can also request this information by contacting us at 1‑800‑243‑1574.
Additional Information Phone Number 1‑800‑243‑1574
Additional Information Website https://www.virtus.com/investor-resources/mutual-fund-documents
Expenses [Text Block]
What were the Fund costs for the last six months?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Virtus Duff & Phelps Select MLP and Energy Fund
Class A / VLPAX		 $71 1.40%
Expenses Paid, Amount $ 71
Expense Ratio, Percent 1.40%
Net Assets $ 54,553,000
Holdings Count | Holding 28
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Fund net assets (‘000s) $54,553
Total number of portfolio holdings 28
Portfolio turnover rate as of the end of the reporting period 25%
Holdings [Text Block]
Asset Allocation(1)
Common Stocks & MLP Interests 98%
Diversified 39%
Natural Gas Pipelines 20%
Liquefied Natural Gas 12%
Electric, LDC & Power 10%
Petroleum Transportation & Storage 8%
Downstream/Other 6%
Gathering/Processing 3%
Short-Term Investment 2%
Total 100%
​(1)
Percentage of total investments as of April 30, 2025.
C000159802 [Member]  
Shareholder Report [Line Items]  
Fund Name Virtus Duff & Phelps Select MLP and Energy Fund
Class Name Class C
Trading Symbol VLPCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Virtus Duff & Phelps Select MLP and Energy Fund (“Fund”) for the period of November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.virtus.com/investor-resources/mutual-fund-documents. You can also request this information by contacting us at 1‑800‑243‑1574.
Additional Information Phone Number 1‑800‑243‑1574
Additional Information Website https://www.virtus.com/investor-resources/mutual-fund-documents
Expenses [Text Block]
What were the Fund costs for the last six months?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Virtus Duff & Phelps Select MLP and Energy Fund
Class C / VLPCX		 $109 2.15%
Expenses Paid, Amount $ 109
Expense Ratio, Percent 2.15%
Net Assets $ 54,553,000
Holdings Count | Holding 28
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Fund net assets (‘000s) $54,553
Total number of portfolio holdings 28
Portfolio turnover rate as of the end of the reporting period 25%
Holdings [Text Block]
Asset Allocation(1)
Common Stocks & MLP Interests 98%
Diversified 39%
Natural Gas Pipelines 20%
Liquefied Natural Gas 12%
Electric, LDC & Power 10%
Petroleum Transportation & Storage 8%
Downstream/Other 6%
Gathering/Processing 3%
Short-Term Investment 2%
Total 100%
​(1)
Percentage of total investments as of April 30, 2025.
C000159803 [Member]  
Shareholder Report [Line Items]  
Fund Name Virtus Duff & Phelps Select MLP and Energy Fund
Class Name Class I
Trading Symbol VLPIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Virtus Duff & Phelps Select MLP and Energy Fund (“Fund”) for the period of November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.virtus.com/investor-resources/mutual-fund-documents. You can also request this information by contacting us at 1‑800‑243‑1574.
Additional Information Phone Number 1‑800‑243‑1574
Additional Information Website https://www.virtus.com/investor-resources/mutual-fund-documents
Expenses [Text Block]
What were the Fund costs for the last six months?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Virtus Duff & Phelps Select MLP and Energy Fund
Class I / VLPIX		 $58 1.15%
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.15%
Net Assets $ 54,553,000
Holdings Count | Holding 28
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Fund net assets (‘000s) $54,553
Total number of portfolio holdings 28
Portfolio turnover rate as of the end of the reporting period 25%
Holdings [Text Block]
Asset Allocation(1)
Common Stocks & MLP Interests 98%
Diversified 39%
Natural Gas Pipelines 20%
Liquefied Natural Gas 12%
Electric, LDC & Power 10%
Petroleum Transportation & Storage 8%
Downstream/Other 6%
Gathering/Processing 3%
Short-Term Investment 2%
Total 100%
​(1)
Percentage of total investments as of April 30, 2025.
C000206132 [Member]  
Shareholder Report [Line Items]  
Fund Name Virtus KAR Long/Short Equity Fund
Class Name Class A
Trading Symbol VLSAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Virtus KAR Long/Short Equity Fund (“Fund”) for the period of November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.virtus.com/investor-resources/mutual-fund-documents. You can also request this information by contacting us at 1‑800‑243‑1574.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred from the beginning of the reporting period through the date of issuance of this report.
Additional Information Phone Number 1‑800‑243‑1574
Additional Information Website https://www.virtus.com/investor-resources/mutual-fund-documents
Expenses [Text Block]
What were the Fund costs for the last six months?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Virtus KAR Long/Short Equity Fund
Class A / VLSAX		 $107 2.24%
Expenses Paid, Amount $ 107
Expense Ratio, Percent 2.24%
Net Assets $ 53,492,000
Holdings Count | Holding 39
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Fund net assets (‘000s) $53,492
Total number of portfolio holdings 39
Portfolio turnover rate as of the end of the reporting period 10%
Holdings [Text Block]
Asset Allocation(1)
Common Stocks 120%
Financials 42%
Industrials 25%
Information Technology 15%
Consumer Discretionary 11%
Health Care 10%
Communication Services 10%
Consumer Staples 7%
Securities Sold Short (20)%
Industrials (6)%
Consumer Discretionary (6)%
Information Technology (4)%
Financials (3)%
Real Estate (1)%
Total 100%
​(1)
Percentage of total investments as of April 30, 2025.
Material Fund Change [Text Block]
Material Fund Changes
On June 3, 2025, the Board of Trustees of Virtus Alternative Solutions Trust voted to approve a Plan of Liquidation for the KAR Long/Short Equity Fund (the "Fund"), pursuant to which the Fund will be liquidated on or about July 25, 2025.
C000206133 [Member]  
Shareholder Report [Line Items]  
Fund Name Virtus KAR Long/Short Equity Fund
Class Name Class C
Trading Symbol VLSCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Virtus KAR Long/Short Equity Fund (“Fund”) for the period of November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.virtus.com/investor-resources/mutual-fund-documents. You can also request this information by contacting us at 1‑800‑243‑1574.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred from the beginning of the reporting period through the date of issuance of this report.
Additional Information Phone Number 1‑800‑243‑1574
Additional Information Website https://www.virtus.com/investor-resources/mutual-fund-documents
Expenses [Text Block]
What were the Fund costs for the last six months?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Virtus KAR Long/Short Equity Fund
Class C / VLSCX		 $143 2.99%
Expenses Paid, Amount $ 143
Expense Ratio, Percent 2.99%
Net Assets $ 53,492,000
Holdings Count | Holding 39
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Fund net assets (‘000s) $53,492
Total number of portfolio holdings 39
Portfolio turnover rate as of the end of the reporting period 10%
Holdings [Text Block]
Asset Allocation(1)
Common Stocks 120%
Financials 42%
Industrials 25%
Information Technology 15%
Consumer Discretionary 11%
Health Care 10%
Communication Services 10%
Consumer Staples 7%
Securities Sold Short (20)%
Industrials (6)%
Consumer Discretionary (6)%
Information Technology (4)%
Financials (3)%
Real Estate (1)%
Total 100%
​(1)
Percentage of total investments as of April 30, 2025.
Material Fund Change [Text Block]
Material Fund Changes
On June 3, 2025, the Board of Trustees of Virtus Alternative Solutions Trust voted to approve a Plan of Liquidation for the KAR Long/Short Equity Fund (the "Fund"), pursuant to which the Fund will be liquidated on or about July 25, 2025.
C000206134 [Member]  
Shareholder Report [Line Items]  
Fund Name Virtus KAR Long/Short Equity Fund
Class Name Class I
Trading Symbol VLSIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Virtus KAR Long/Short Equity Fund (“Fund”) for the period of November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.virtus.com/investor-resources/mutual-fund-documents. You can also request this information by contacting us at 1‑800‑243‑1574.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred from the beginning of the reporting period through the date of issuance of this report.
Additional Information Phone Number 1‑800‑243‑1574
Additional Information Website https://www.virtus.com/investor-resources/mutual-fund-documents
Expenses [Text Block]
What were the Fund costs for the last six months?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Virtus KAR Long/Short Equity Fund
Class I / VLSIX		 $96 1.99%
Expenses Paid, Amount $ 96
Expense Ratio, Percent 1.99%
Net Assets $ 53,492,000
Holdings Count | Holding 39
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Fund net assets (‘000s) $53,492
Total number of portfolio holdings 39
Portfolio turnover rate as of the end of the reporting period 10%
Holdings [Text Block]
Asset Allocation(1)
Common Stocks 120%
Financials 42%
Industrials 25%
Information Technology 15%
Consumer Discretionary 11%
Health Care 10%
Communication Services 10%
Consumer Staples 7%
Securities Sold Short (20)%
Industrials (6)%
Consumer Discretionary (6)%
Information Technology (4)%
Financials (3)%
Real Estate (1)%
Total 100%
​(1)
Percentage of total investments as of April 30, 2025.
Material Fund Change [Text Block]
Material Fund Changes
On June 3, 2025, the Board of Trustees of Virtus Alternative Solutions Trust voted to approve a Plan of Liquidation for the KAR Long/Short Equity Fund (the "Fund"), pursuant to which the Fund will be liquidated on or about July 25, 2025.
C000206130 [Member]  
Shareholder Report [Line Items]  
Fund Name Virtus KAR Long/Short Equity Fund
Class Name Class R6
Trading Symbol VLSRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Virtus KAR Long/Short Equity Fund (“Fund”) for the period of November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.virtus.com/investor-resources/mutual-fund-documents. You can also request this information by contacting us at 1‑800‑243‑1574.
Material Fund Change Notice [Text Block] This report describes changes to the Fund that occurred from the beginning of the reporting period through the date of issuance of this report.
Additional Information Phone Number 1‑800‑243‑1574
Additional Information Website https://www.virtus.com/investor-resources/mutual-fund-documents
Expenses [Text Block]
What were the Fund costs for the last six months?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Virtus KAR Long/Short Equity Fund
Class R6 / VLSRX		 $92 1.91%
Expenses Paid, Amount $ 92
Expense Ratio, Percent 1.91%
Net Assets $ 53,492,000
Holdings Count | Holding 39
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Fund net assets (‘000s) $53,492
Total number of portfolio holdings 39
Portfolio turnover rate as of the end of the reporting period 10%
Holdings [Text Block]
Asset Allocation(1)
Common Stocks 120%
Financials 42%
Industrials 25%
Information Technology 15%
Consumer Discretionary 11%
Health Care 10%
Communication Services 10%
Consumer Staples 7%
Securities Sold Short (20)%
Industrials (6)%
Consumer Discretionary (6)%
Information Technology (4)%
Financials (3)%
Real Estate (1)%
Total 100%
​(1)
Percentage of total investments as of April 30, 2025.
Material Fund Change [Text Block]
Material Fund Changes
On June 3, 2025, the Board of Trustees of Virtus Alternative Solutions Trust voted to approve a Plan of Liquidation for the KAR Long/Short Equity Fund (the "Fund"), pursuant to which the Fund will be liquidated on or about July 25, 2025.