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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName VIRTUS OPPORTUNITIES TRUST
Prospectus Date rr_ProspectusDate Jan. 31, 2013
Supplement [Text Block] vot_SupplementTextBlock

Virtus Dynamic AlphaSectorSM Fund,

a series of Virtus Opportunities Trust

Supplement dated May 17, 2013 to the Prospectuses

dated January 31, 2013, as supplemented

IMPORTANT NOTICE TO INVESTORS

The following corrects index performance information and the description of the indexes appearing under “Average Annual Total Returns” in the fund’s summary prospectus and the summary section of the statutory prospectus.

 

        1 Year      5 Years      10 Years     

Class I

Since
Inception

(10/1/09)

Class A                            
Return Before Taxes
      0.56%      -1.96%      -1.35%      —
Return After Taxes on Distributions
      0.07%      -2.13%      -1.52%      —
Return After Taxes on Distributions and Sale of Fund Shares
      0.04%      -1.73%      -1.20%      —
Class B                            
Return Before Taxes
      1.88%      -1.78%      -1.52%      —
Class C                            
Return Before Taxes
      5.94%      -1.55%      -1.50%      —
Class I                            
Return Before Taxes
      7.20%      —      —      -1.34%
S&P 500 Index (reflects no deduction of fees, expenses or taxes)      16.00%      1.66%      7.10%      12.89%
Dynamic AlphaSector Linked Benchmark (reflects no deduction of fees, expenses or taxes)      8.30%      2.05%      2.50%      2.56%

The S&P 500® Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total-return basis with dividends reinvested. The Dynamic AlphaSectorSM Linked Benchmark consists of the S&P 500 Index; performance of the Dynamic AlphaSectorSM Linked Benchmark prior to February 6, 2012 is that of the Citigroup 90-Day Treasury Bill Index. The indexes are unmanaged and not available for direct investment.

VIRTUS DYNAMIC ALPHASECTOR FUND
  
Risk/Return: rr_RiskReturnAbstract  
Supplement [Text Block] vot_SupplementTextBlock

Virtus Dynamic AlphaSectorSM Fund,

a series of Virtus Opportunities Trust

Supplement dated May 17, 2013 to the Prospectuses

dated January 31, 2013, as supplemented

IMPORTANT NOTICE TO INVESTORS

The following corrects index performance information and the description of the indexes appearing under “Average Annual Total Returns” in the fund’s summary prospectus and the summary section of the statutory prospectus.

 

        1 Year      5 Years      10 Years     

Class I

Since
Inception

(10/1/09)

Class A                            
Return Before Taxes
      0.56%      -1.96%      -1.35%      —
Return After Taxes on Distributions
      0.07%      -2.13%      -1.52%      —
Return After Taxes on Distributions and Sale of Fund Shares
      0.04%      -1.73%      -1.20%      —
Class B                            
Return Before Taxes
      1.88%      -1.78%      -1.52%      —
Class C                            
Return Before Taxes
      5.94%      -1.55%      -1.50%      —
Class I                            
Return Before Taxes
      7.20%      —      —      -1.34%
S&P 500 Index (reflects no deduction of fees, expenses or taxes)      16.00%      1.66%      7.10%      12.89%
Dynamic AlphaSector Linked Benchmark (reflects no deduction of fees, expenses or taxes)      8.30%      2.05%      2.50%      2.56%

The S&P 500® Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total-return basis with dividends reinvested. The Dynamic AlphaSectorSM Linked Benchmark consists of the S&P 500 Index; performance of the Dynamic AlphaSectorSM Linked Benchmark prior to February 6, 2012 is that of the Citigroup 90-Day Treasury Bill Index. The indexes are unmanaged and not available for direct investment.

Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock The S&P 500® Index is a free-float market capitalization-weighted index of 500 of the largest U.S. companies. The index is calculated on a total-return basis with dividends reinvested. The Dynamic AlphaSectorSM Linked Benchmark consists of the S&P 500 Index; performance of the Dynamic AlphaSectorSM Linked Benchmark prior to February 6, 2012 is that of the Citigroup 90-Day Treasury Bill Index. The indexes are unmanaged and not available for direct investment.
VIRTUS DYNAMIC ALPHASECTOR FUND | Class A
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 0.56%
5 Years rr_AverageAnnualReturnYear05 (1.96%)
10 Years rr_AverageAnnualReturnYear10 (1.35%)
Since Inception rr_AverageAnnualReturnSinceInception   
VIRTUS DYNAMIC ALPHASECTOR FUND | Class B
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 1.88%
5 Years rr_AverageAnnualReturnYear05 (1.78%)
10 Years rr_AverageAnnualReturnYear10 (1.52%)
Since Inception rr_AverageAnnualReturnSinceInception   
VIRTUS DYNAMIC ALPHASECTOR FUND | Class C
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 5.94%
5 Years rr_AverageAnnualReturnYear05 (1.55%)
10 Years rr_AverageAnnualReturnYear10 (1.50%)
Since Inception rr_AverageAnnualReturnSinceInception   
VIRTUS DYNAMIC ALPHASECTOR FUND | Class I
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 7.20%
5 Years rr_AverageAnnualReturnYear05   
10 Years rr_AverageAnnualReturnYear10   
Since Inception rr_AverageAnnualReturnSinceInception (1.34%)
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 01, 2009
VIRTUS DYNAMIC ALPHASECTOR FUND | Return After Taxes on Distributions | Class A
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 0.07%
5 Years rr_AverageAnnualReturnYear05 (2.13%)
10 Years rr_AverageAnnualReturnYear10 (1.52%)
Since Inception rr_AverageAnnualReturnSinceInception   
VIRTUS DYNAMIC ALPHASECTOR FUND | Return After Taxes on Distributions and Sale of Fund Shares | Class A
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 0.04%
5 Years rr_AverageAnnualReturnYear05 (1.73%)
10 Years rr_AverageAnnualReturnYear10 (1.20%)
Since Inception rr_AverageAnnualReturnSinceInception   
VIRTUS DYNAMIC ALPHASECTOR FUND | S&P 500 Index (reflects no deduction of fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 16.00%
5 Years rr_AverageAnnualReturnYear05 1.66%
10 Years rr_AverageAnnualReturnYear10 7.10%
VIRTUS DYNAMIC ALPHASECTOR FUND | S&P 500 Index (reflects no deduction of fees, expenses or taxes) | Class I
  
Risk/Return: rr_RiskReturnAbstract  
Since Inception rr_AverageAnnualReturnSinceInception 12.89%
VIRTUS DYNAMIC ALPHASECTOR FUND | Dynamic AlphaSector Linked Benchmark (reflects no deduction of fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 8.30%
5 Years rr_AverageAnnualReturnYear05 2.05%
10 Years rr_AverageAnnualReturnYear10 2.50%
VIRTUS DYNAMIC ALPHASECTOR FUND | Dynamic AlphaSector Linked Benchmark (reflects no deduction of fees, expenses or taxes) | Class I
  
Risk/Return: rr_RiskReturnAbstract  
Since Inception rr_AverageAnnualReturnSinceInception 2.56%