Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	PUTNAM FUNDS TRUST
Prospectus Date	rr_ProspectusDate	Nov. 30, 2014
Putnam Low Volatility Equity Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund summaries PUTNAM LOW VOLATILITY EQUITY FUND
Objective [Heading]	rr_ObjectiveHeading	Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Putnam Low Volatility Equity Fund seeks a total return comparable to that of the U.S. equity markets, but with lower volatility, over a market cycle (generally at least three years or more).
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 19 of 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	Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual fund operating expenses (expenses you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	November 30, 2015
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The fund pays transaction-related costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or the above example, affect fund performance. The fund’s turnover rate in the most recent fiscal year was 91%.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	91.00%
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 19 of 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.
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.
Strategy [Heading]	rr_StrategyHeading	Investments
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The fund invests mainly in common stocks of large U.S. companies across all sectors. The fund expects to allocate its investments across sectors so that the fund’s portfolio approximately reflects sector weightings across the broader equity markets. Within each sector, the fund generally focuses its investments on those stocks that we believe are likely to have lower sensitivity to broader market or sector movements. We refer to these stocks as “low beta” stocks. Beta is a measurement of a stock’s anticipated sensitivity to price movements in a particular market, as measured by a market or sector index. A stock with a beta higher than 1.0 is generally expected to be more volatile than the index, and a stock with a beta of less than 1.0 should be less volatile than the index and may be expected to rise and fall in price more slowly than the market or sector. We generally emphasize investments within each sector in low beta stocks (measured relative to the S&P 500 Index) because we believe that, over a full market cycle (generally at least three years or more), a portfolio of low beta stocks may be able to earn investment returns comparable to market returns, but with less volatility than the market, thus earning an attractive risk-adjusted return relative to the market. We intend to write (sell) call options, generally on equity indices but also on individual portfolio securities. We sell call options to earn premium income. Selling call options may also reduce the volatility of the fund’s portfolio. We intend to buy put options, generally on equity indices but also on individual portfolio securities. We buy put options to reduce the volatility of the fund’s portfolio by protecting the fund from the impact of significant market declines. In addition to call options and put options, we may use derivatives, such as futures, options, warrants and swap contracts, for hedging purposes and to adjust the return and volatility characteristics of the fund’s investments. We may also make other investments, including in derivatives, intended to protect the fund from market volatility, or to take advantage of the potential for returns from instruments that perform well during periods of market volatility. We may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends, as well as general market conditions, when deciding whether to buy or sell investments. As noted above, we will also consider the fund’s overall exposure to each sector.
Risk [Heading]	rr_RiskHeading	Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	It is important to understand that you can lose money by investing in the fund. The value of stocks in the fund’s portfolio may fall or fail to rise over extended periods of time for a variety of reasons, including both general financial market conditions and factors related to a specific company, industry or sector. There may be times when stocks in the fund’s portfolio exhibit higher volatility than we expect, are not correlated with market movements as we expect, or underperform the markets. By selling covered call options, the fund limits its opportunity to profit from an increase in the price of the underlying portfolio securities, but continues to bear the risk of a decline in the value of these securities. The fund also risks losing all or part of the cash paid for purchasing put options. Our use of derivatives may increase the fund’s risk of loss by increasing investment exposure or, in the case of many over-the-counter instruments, because of the potential inability to terminate or sell derivatives positions and the potential failure of the other party to the instrument to meet its obligations. The fund may not achieve its goal, and it is not intended to be a complete investment program. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Risk Lose Money [Text]	rr_RiskLoseMoney	It is important to understand that you can lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	Performance information will be available after the fund completes a full calendar year of operation.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Performance information will be available after the fund completes a full calendar year of operation.
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	0.63%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.51%
Expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.30%)	[3]
Total annual fund operating expenses after expense reimbursement	rr_NetExpensesOverAssets	1.21%
1 year	rr_ExpenseExampleYear01	691
3 years	rr_ExpenseExampleYear03	997
5 years	rr_ExpenseExampleYear05	1,325
10 years	rr_ExpenseExampleYear10	2,249
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%	[4]
Management fees	rr_ManagementFeesOverAssets	0.62%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.63%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total annual fund operating expenses	rr_ExpensesOverAssets	2.26%
Expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.30%)	[3]
Total annual fund operating expenses after expense reimbursement	rr_NetExpensesOverAssets	1.96%
1 year	rr_ExpenseExampleYear01	699
3 years	rr_ExpenseExampleYear03	978
5 years	rr_ExpenseExampleYear05	1,383
10 years	rr_ExpenseExampleYear10	2,383
1 year	rr_ExpenseExampleNoRedemptionYear01	199
3 years	rr_ExpenseExampleNoRedemptionYear03	678
5 years	rr_ExpenseExampleNoRedemptionYear05	1,183
10 years	rr_ExpenseExampleNoRedemptionYear10	2,383
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%	[5]
Management fees	rr_ManagementFeesOverAssets	0.62%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.63%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total annual fund operating expenses	rr_ExpensesOverAssets	2.26%
Expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.30%)	[3]
Total annual fund operating expenses after expense reimbursement	rr_NetExpensesOverAssets	1.96%
1 year	rr_ExpenseExampleYear01	299
3 years	rr_ExpenseExampleYear03	678
5 years	rr_ExpenseExampleYear05	1,183
10 years	rr_ExpenseExampleYear10	2,572
1 year	rr_ExpenseExampleNoRedemptionYear01	199
3 years	rr_ExpenseExampleNoRedemptionYear03	678
5 years	rr_ExpenseExampleNoRedemptionYear05	1,183
10 years	rr_ExpenseExampleNoRedemptionYear10	2,572
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	0.65%	[1]
Management fees	rr_ManagementFeesOverAssets	0.62%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.75%
Other expenses	rr_OtherExpensesOverAssets	0.63%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total annual fund operating expenses	rr_ExpensesOverAssets	2.01%
Expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.30%)	[3]
Total annual fund operating expenses after expense reimbursement	rr_NetExpensesOverAssets	1.71%
1 year	rr_ExpenseExampleYear01	518
3 years	rr_ExpenseExampleYear03	930
5 years	rr_ExpenseExampleYear05	1,368
10 years	rr_ExpenseExampleYear10	2,583
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
Other expenses	rr_OtherExpensesOverAssets	0.63%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.26%
Expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.30%)	[3]
Total annual fund operating expenses after expense reimbursement	rr_NetExpensesOverAssets	0.96%
1 year	rr_ExpenseExampleYear01	98
3 years	rr_ExpenseExampleYear03	370
5 years	rr_ExpenseExampleYear05	663
10 years	rr_ExpenseExampleYear10	1,496

[1] Applies only to certain redemptions of shares bought with no initial sales charge.

[2] Restated to reflect current fees.

[3] Reflects Putnam Investment Management, LLC's contractual obligation to limit certain fund expenses through November 30, 2015. This obligation may be modified or discontinued only with the approval of the Board of Trustees.

[4] This charge is phased out over six years.

[5] This charge is eliminated after one year.