XML 30 R7.htm IDEA: XBRL DOCUMENT v3.20.4
Label Element Value
Mirova U.S. Sustainable Equity Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Mirova U.S. Sustainable Equity Fund
Objective [Heading] rr_ObjectiveHeading Investment Goal
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund seeks long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading Fund Fees & Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
The following table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in this table. 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 the Natixis Funds Complex. More information about these and other discounts is available from your financial professional and in the section “How Sales Charges Are Calculated” on page
11
of the Prospectus, in Appendix A to the Prospectus and on page 
7
5
in the section “Reduced Sales Charges” of the Statement of Additional Information (“SAI”).
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 the Natixis Funds Complex.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
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)
Other Expenses, New Fund, Based on Estimates [Text] rr_OtherExpensesNewFundBasedOnEstimates Other expenses are estimated for the current fiscal year.
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination April 30, 2022
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock
A 1.00% contingent deferred sales charge (“CDSC”) may apply to certain purchases of Class A shares of $1,000,000 or more that are redeemed within eighteen months of the
date of purchase.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This 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 redeem all of your shares at the end of those periods (except where indicated). The
example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same
, except that the example is
based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will
only be in place through the date noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example does not take into
account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your
actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption If shares are redeemed:
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption If shares are not redeemed:
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may
indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected
in annual fund operating expenses or in the example, affect the Fund’s performance. 
Strategy [Heading] rr_StrategyHeading Investments, Risks and Performance Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
Under normal circumstances, the Fund invests at least 80% of its assets in equity securities, which may include common stocks, preferred stocks, depositary
receipts and real estate investment trusts (“REITs”). Under normal circumstances, the Fund will invest at least 80% of its assets in securities of U.S. issuers
incorporated in the U.S. and/or listed on a U.S. stock exchange. The Fund may invest in growth and value companies of any size, including small- and mid-capitalization companies. The Adviser considers companies with a market capitalization under 2 billion USD to be small-capitalization companies and companies with a market capitalization between 2 and 10 billion USD to be mid-capitalization companies.
In making its investment decisions, the Adviser uses a bottom-up approach focused on individual companies, rather than focusing on specific themes, specific
industries or economic factors.
The Adviser applies a thematic approach to investment idea generation, identifying securities of companies that it believes offer solutions to the major
transitions that our world is going through. These transitions include (i) demographics, such as an aging population, (ii) environmental issues, such as water
scarcity and climate change, (iii) technological advances, such as cloud computing, and (iv) governance changes, such as the growing importance of corporate
responsibility.
The Adviser may sell a security due to a deterioration in the company’s fundamental quality, a change in thematic exposure or impact relative to the United Nations’ Sustainable Development Goals (the “SDGs”), a
controversy alert such as one relating to human rights, or if the Adviser believes the security has little potential for price appreciation or there is greater
relative value in other securities in the Fund’s investment universe.
Risk [Heading] rr_RiskHeading Principal Investment Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
The principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund. 
The significance of any specific risk to an investment in the Fund will vary over time, depending on the composition of the Fund’s portfolio, market conditions,
and other factors. You should read all of the risk information presented below carefully, because any one or more of these risks may result in losses to the
Fund.
Equity Securities Risk:
The value of the Fund’s investments in equity securities could be subject to unpredictable declines in the value of individual
securities and periods of below-average performance in individual securities or in the equity market as a whole. 
Securities issued in initial public offerings
(“IPOs”) tend to involve greater market risk than other equity securities due, in part, to public perception and the lack of publicly available information and
trading history. Growth stocks are generally more sensitive to market movements than other types of stocks primarily because their stock prices are based
heavily on future expectations. If the Adviser’s assessment of the prospects for a company’s growth is wrong, or if the Adviser’s judgment of how other
investors will value the company’s growth is wrong, then the price of the company’s stock may fall or not approach the value that the Adviser has placed on
it. Value stocks can perform differently from the market as a whole and from other types of stocks. Value stocks also present the risk that their lower
valuations fairly reflect their business prospects and that investors will not agree that the stocks represent favorable investment opportunities, and they may
fall out of favor with investors and underperform growth stocks during any given period. In the event an issuer is liquidated or declares bankruptcy, the claims
of owners of the issuer’s bonds generally take precedence over the claims of those who own preferred stock or common stock.
Market/Issuer Risk:
 
The market value of the Fund’s investments will move up and down, sometimes rapidly and unpredictably, based upon overall market
 
and economic conditions, as well as a number of reasons that directly relate to the issuers of the Fund’s investments, such as management performance,
 
financial condition and demand for the issuers’ goods and services. 
Management Risk:
 
A strategy used by the Fund’s 
portfolio managers may fail to produce the intended result.
 
Liquidity Risk:
  Liquidity risk is the risk that the Fund may be unable to find a buyer for its investments when it seeks to sell them or to receive the price it
 
expects. Decreases in the number of financial institutions willing to make markets in the Fund’s investments or in their capacity or willingness to transact may
 
increase the Fund’s exposure to this risk. Events that may lead to increased redemptions, such as market disruptions or increases in interest rates, may also
 
negatively impact the liquidity of the Fund’s investments when it needs to dispose of them. If the Fund is forced to sell its investments at an unfavorable time
 
and/or under adverse conditions in order to meet redemption requests, such sales could negatively affect the Fund. Securities acquired in a private
 
placement, such as Rule 144A securities, are generally subject to significant liquidity risk because they are subject to strict restrictions on resale and there
 
may be no liquid secondary market or ready purchaser for such securities.
 
 Liquidity issues may also make it difficult to value the Fund’s investments.
Large Investor Risk:
 
Ownership of shares of the Fund may be concentrated in one or a few large investors. Such investors may redeem shares in large
 
quantities or on a frequent basis. Redemptions by a large investor can affect the performance of the Fund, may increase realized capital gains, including
 
short-term capital gains taxable as ordinary income, may accelerate the realization of taxable income to shareholders and may increase transaction costs.
 
These transactions potentially limit the use of any capital loss carryforwards and certain other losses to offset future realized capital gains (if any). Such
 
transactions may also increase the Fund’s expenses.
Cybersecurity and Technology Risk:
 
The Fund, its service providers, and other market participants increasingly depend on complex information
 
technology and communications systems, which are subject to a number of different threats and risks that could adversely affect the Fund and its
 
shareholders. Cybersecurity and other operational and technology issues may result in financial losses to the Fund and its shareholders.
ESG Investing Risk:
 The Fund’s ESG investment approach could cause the Fund to perform differently compared to funds that do not have such an approach
 
or compared to the market as a whole. The Fund’s application of ESG-related considerations may affect the Fund’s exposure to certain issuers, industries,
 
sectors, style factors or other characteristics and may impact the relative performance of the Fund—positively or negatively—depending on the relative
 
performance of such investments.
REITs Risk:
 
 
Investments in the real estate industry, including REITs, are particularly sensitive to economic downturns and are sensitive to factors such as
 
changes in real estate values, property taxes and tax laws, interest rates, cash flow of underlying real estate assets, occupancy rates, government regulations
 
affecting zoning, land use and rents and the management skill and creditworthiness of the issuer. Companies in the real estate industry also may be subject
 
to liabilities under environmental and hazardous waste laws. In addition, the value of a REIT is affected by changes in the value of the properties owned by
 
the REIT or mortgage loans held by the REIT. REITs are also subject to default and prepayment risk. Many REITs are highly leveraged, increasing their risk. The
 
Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests in addition to the expenses of
 
the Fund.
Small- and Mid-Capitalization Companies Risk:
 
Compared to large-capitalization companies, small- and mid-capitalization companies are more likely to
 
have limited product lines, markets or financial resources. Stocks of these companies often trade less frequently and in limited volume and their prices may
 
fluctuate more than stocks of large-capitalization companies. As a result, it may be relatively more difficult for the Fund to buy and sell securities of small-
 
and mid-capitalization companies.
Risk Lose Money [Text] rr_RiskLoseMoney You may lose money by investing in the Fund. 
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Risk/Return Bar Chart and Table
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
Because the Fund has not yet completed a full calendar year, information related to Fund performance, including a bar chart showing annual returns, has not been included in this Prospectus.
The performance information provided by the Fund in the future will give some indication of the risks of an investment in the
Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns compare against those of a broad measure of market performance.
The Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Updated performance information is available online at im.natixis.com and/or by calling the Fund toll-free at 800-225-5478.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The performance information provided by the Fund in the future will give some indication of the risks of an investment in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns compare against those of a broad measure of market performance.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess Because the Fund has not yet completed a full calendar year, information related to Fund performance, including a bar chart showing annual returns, has not been included in this Prospectus.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800-225-5478
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress im.natixis.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Mirova U.S. Sustainable 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, as applicable) rr_MaximumDeferredSalesChargeOverOther none [1]
Redemption fees rr_RedemptionFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.65%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 33.69% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 34.59%
Fee waiver and/or expenses reimbursement rr_FeeWaiverOrReimbursementOverAssets 33.54% [3],[4]
Total annual fund operating expenses after fee waiver and/or expenses reimbursement rr_NetExpensesOverAssets 1.05%
1 Year rr_ExpenseExampleYear01 $ 676
3 Years rr_ExpenseExampleYear03 $ 5,045
Mirova U.S. Sustainable 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, as applicable) rr_MaximumDeferredSalesChargeOverOther 1.00%
Redemption fees rr_RedemptionFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.65%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 33.69% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 35.34%
Fee waiver and/or expenses reimbursement rr_FeeWaiverOrReimbursementOverAssets 33.54% [3],[4]
Total annual fund operating expenses after fee waiver and/or expenses reimbursement rr_NetExpensesOverAssets 1.80%
1 Year rr_ExpenseExampleYear01 $ 283
3 Years rr_ExpenseExampleYear03 4,867
1 Year rr_ExpenseExampleNoRedemptionYear01 183
3 Years rr_ExpenseExampleNoRedemptionYear03 $ 4,867
Mirova U.S. Sustainable Equity Fund | Class N  
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, as applicable) rr_MaximumDeferredSalesChargeOverOther none
Redemption fees rr_RedemptionFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.65%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 15.22% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 15.87%
Fee waiver and/or expenses reimbursement rr_FeeWaiverOrReimbursementOverAssets 15.12% [3],[4]
Total annual fund operating expenses after fee waiver and/or expenses reimbursement rr_NetExpensesOverAssets 0.75%
1 Year rr_ExpenseExampleYear01 $ 77
3 Years rr_ExpenseExampleYear03 $ 2,595
Mirova U.S. Sustainable 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, as applicable) rr_MaximumDeferredSalesChargeOverOther none
Redemption fees rr_RedemptionFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.65%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 33.69% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 34.34%
Fee waiver and/or expenses reimbursement rr_FeeWaiverOrReimbursementOverAssets 33.54% [3],[4]
Total annual fund operating expenses after fee waiver and/or expenses reimbursement rr_NetExpensesOverAssets 0.80%
1 Year rr_ExpenseExampleYear01 $ 82
3 Years rr_ExpenseExampleYear03 $ 4,700
[1] A 1.00% contingent deferred sales charge (“CDSC”) may apply to certain purchases of Class A shares of $1,000,000 or more that are redeemed within eighteen months of the date of purchase.
[2] Other expenses are estimated for the current fiscal year.
[3] Mirova US LLC (“Mirova US” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.05%, 1.80%, 0.75% and 0.80% of the Fund’s average daily net assets for Class A, C, N and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2022 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below the applicable expense limitations for Class A, C, N and Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.
[4] Natixis Advisors, L.P. (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through April 30, 2022 and may be terminated before then only with the consent of the Fund’s Board of Trustees.