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Class T Prospectus | Dreyfus Global Equity Income Fund  
Risk/Return: rr_RiskReturnAbstract  
Supplement [Text Block] ck0000053808_SupplementTextBlock

July 27, 2017


THE DREYFUS/LAUREL FUNDS TRUST


DREYFUS GLOBAL EQUITY INCOME FUND


(Class T Shares)


Supplement to Prospectus


Dated March 31, 2017
Risk/Return [Heading] rr_RiskReturnHeading Dreyfus Global Equity Income Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following information supersedes and replaces any contrary information contained in “Fund Summary - Fees and Expenses” in the fund’s prospectus:
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Restated to reflect current management fee.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

The Example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds.  The Example assumes that you invest $10,000 in the fund for the time periods indicated and then hold or redeem all of your shares at the end of those periods.  The Example also assumes that your investment has a 5% return each year and that the fund's operating expenses remain the same.  Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Class T Prospectus | Dreyfus Global Equity Income Fund | Class T  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 2.50%
Maximum deferred sales charge (load) (as a percentage of lower of purchase or sale price) rr_MaximumDeferredSalesChargeOverOther none
Management fees rr_ManagementFeesOverAssets 0.75% [1]
Distribution/service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.17%
Total annual fund operating expenses rr_ExpensesOverAssets 1.17%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 366
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 612
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 878
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,635
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 366
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 612
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 878
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,635
[1] Restated to reflect current management fee.