Label

Element

Value

Class T Prospectus | Dreyfus International Bond Fund

Risk/Return:

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Supplement [Text Block]

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November 1, 2017

THE DREYFUS/LAUREL FUNDS TRUST

Dreyfus International Bond Fund

(Class T Shares)

Supplement to Prospectus

Dated March 31, 2017

Risk/Return [Heading]

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Dreyfus International Bond Fund

Expense Narrative [Text Block]

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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]

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Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

Mar. 01, 2019

Expenses Restated to Reflect Current [Text]

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Restated to reflect current management fee.

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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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.  The one-year example and the first year of the three-, five- and ten-year examples are based on net operating expenses, which reflect the expense limitation agreement by The Dreyfus Corporation. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Class T Prospectus | Dreyfus International Bond Fund | Class T

Risk/Return:

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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

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0.50%

^[1]

Distribution/service (12b-1) fees

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0.25%

Other expenses

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0.38%

Total annual fund operating expenses

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1.13%

Fee waiver and/or expense reimbursement

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(0.11%)

^[2]

Total annual fund operating expenses (after fee waiver and/or expense reimbursement)

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1.02%

Expense Example, with Redemption, 1 Year

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$ 351

Expense Example, with Redemption, 3 Years

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590

Expense Example, with Redemption, 5 Years

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846

Expense Example, with Redemption, 10 Years

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1,581

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

351

Expense Example, No Redemption, 3 Years

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590

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

846

Expense Example, No Redemption, 10 Years

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$ 1,581

[1] Restated to reflect current management fee.

[2] The fund's investment adviser, The Dreyfus Corporation, has contractually agreed, until March 1, 2019, to waive receipt of its fees and/or assume the direct expenses of the Class T shares of the fund so that the expenses of such Class T shares do not exceed .77% (excluding Rule 12b-1 fees, taxes, interest, brokerage commissions, commitment fees on borrowings and extraordinary expenses). On or after March 1, 2019, The Dreyfus Corporation may terminate this expense limitation at any time.