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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Document Type dei_DocumentType 497
Document Period End Date dei_DocumentPeriodEndDate Mar. 29, 2017
Registrant Name dei_EntityRegistrantName PUTNAM FUNDS TRUST
Central Index Key dei_EntityCentralIndexKey 0001005942
Amendment Flag dei_AmendmentFlag false
Trading Symbol dei_TradingSymbol PFT
Document Creation Date dei_DocumentCreationDate Mar. 30, 2017
Document Effective Date dei_DocumentEffectiveDate Apr. 01, 2017
Prospectus Date rr_ProspectusDate Nov. 30, 2016
Putnam Low Volatility Equity Fund  
Risk/Return: rr_RiskReturnAbstract  
Expense [Heading] rr_ExpenseHeading Fees and expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock The following table describes the fees and expenses you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 18 of the fund’s prospectus, in the Appendix to the fund’s prospectus, and in How to buy shares beginning on page II-1 of the fund’s statement of additional information (SAI).
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Fees and expenses
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual fund operating expenses (expenses you pay each year as a percentage of the value of your investment)
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Putnam funds. More information about these and other discounts is available from your financial advisor and in How do I buy fund shares? beginning on page 18 of the fund’s prospectus, in the Appendix to the fund’s prospectus, and in How to buy shares beginning on page II-1 of the fund’s statement of additional information (SAI).
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Restated to reflect current fees resulting from a change to the fund's investor servicing arrangements effective September 1, 2016.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock The following hypothetical example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. It assumes that you invest $10,000 in the fund for the time periods indicated and then, except as indicated, redeem all your shares at the end of those periods. It assumes a 5% return on your investment each year and that the fund’s operating expenses remain the same. Only the first year of each period in the example takes into account the expense reimbursement described above. Your actual costs may be higher or lower.
Putnam Low Volatility Equity Fund | Class A  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther 1.00% [1]
Management fees rr_ManagementFeesOverAssets 0.62%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.45%
Total annual fund operating expenses rr_ExpensesOverAssets 1.32%
Expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.12%) [2]
Total annual fund operating expenses after expense reimbursement rr_NetExpensesOverAssets 1.20%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 690
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 959
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,247
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,066
Putnam Low Volatility Equity Fund | Class B  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther 5.00% [3]
Management fees rr_ManagementFeesOverAssets 0.62%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.45%
Total annual fund operating expenses rr_ExpensesOverAssets 2.07%
Expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.12%) [2]
Total annual fund operating expenses after expense reimbursement rr_NetExpensesOverAssets 1.95%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 698
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 938
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,304
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,200
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 198
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 638
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,104
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,200
Putnam Low Volatility Equity Fund | Class C  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther 1.00% [4]
Management fees rr_ManagementFeesOverAssets 0.62%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.45%
Total annual fund operating expenses rr_ExpensesOverAssets 2.07%
Expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.12%) [2]
Total annual fund operating expenses after expense reimbursement rr_NetExpensesOverAssets 1.95%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 298
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 638
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,104
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,393
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 198
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 638
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,104
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,393
Putnam Low Volatility Equity Fund | Class M  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 3.50%
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none
Management fees rr_ManagementFeesOverAssets 0.62%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.75%
Other expenses rr_OtherExpensesOverAssets 0.45%
Total annual fund operating expenses rr_ExpensesOverAssets 1.82%
Expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.12%) [2]
Total annual fund operating expenses after expense reimbursement rr_NetExpensesOverAssets 1.70%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 517
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 892
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,291
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,405
Putnam Low Volatility Equity 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 original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none
Management fees rr_ManagementFeesOverAssets 0.62%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.45% [5]
Total annual fund operating expenses rr_ExpensesOverAssets 1.32%
Expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.12%) [2]
Total annual fund operating expenses after expense reimbursement rr_NetExpensesOverAssets 1.20%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 369
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 647
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 945
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,792
Putnam Low Volatility Equity Fund | Class Y  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none
Management fees rr_ManagementFeesOverAssets 0.62%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.45% [6]
Total annual fund operating expenses rr_ExpensesOverAssets 1.07%
Expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.12%) [2]
Total annual fund operating expenses after expense reimbursement rr_NetExpensesOverAssets 0.95%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 97
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 329
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 580
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,297
[1] Applies only to certain redemptions of shares bought with no initial sales charge.
[2] Reflects Putnam Investment Management, LLC's contractual obligation to limit certain fund expenses through November 30, 2017. This obligation may be modified or discontinued only with approval of the Board of Trustees.
[3] This charge is phased out over six years.
[4] This charge is eliminated after one year.
[5] Other expenses are based on expenses of class A shares for the fund's last fiscal year, as restated to reflect current fees resulting from a change to the fund's investor servicing arrangements effective September 1, 2016.
[6] Restated to reflect current fees resulting from a change to the fund's investor servicing arrangements effective September 1, 2016