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Domini Impact International Equity Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading DOMINI IMPACT INTERNATIONAL EQUITY FUNDSM
Objective [Heading] rr_ObjectiveHeading Investment objective:
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The Fund seeks to provide its shareholders with long-term total return.
Expense [Heading] rr_ExpenseHeading Fees and expenses of the Fund:
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for Class A sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Investor or Class A shares of the Domini Impact Equity Fund and the Domini Impact International Equity Fund. More information about these and other discounts is available from your financial professional or in the Fund’s prospectus on page
A-15
under the heading “How Sales Charges Are Calculated for Class A Shares” and on page
C-1
under the heading “Intermediary-Defined Sales Charge Waiver Policies,” and in the Fund’s Statement of Additional Information (“SAI”) on page 41 under the heading “Additional Information Regarding Class A Sales Charges.” If you invest in Institutional or Class Y shares of the Fund through an investment professional or financial intermediary, that investment professional or financial intermediary may charge you a commission in an amount determined and separately disclosed to you by that investment professional or financial intermediary.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder 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)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination November 30, 2021
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 when 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 but are already reflected in its total returns. During the most recent fiscal year, the Fund’s turnover rate was 98% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 98.00%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for Class A sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Investor or Class A shares of the Domini Impact Equity Fund and the Domini Impact International Equity Fund.
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 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, that your investment has a 5% return each year, and that the Fund’s operating expenses (reflecting applicable contractual fee waivers and expense reimbursement arrangements) remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be as follows:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption Share classes(whether or not shares are redeemed)
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption Share classes(whether or not shares are redeemed)
Strategy [Heading] rr_StrategyHeading Principal investment strategies:
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock The Fund may invest in equity securities of companies of any market capitalization. Under normal circumstances, the Fund primarily invests in
mid-
and large- capitalization companies located in Europe, the Asia-Pacific region, and throughout the rest of the world. Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of borrowings, if any, for investment purposes) will be invested in equity securities and related investments with similar economic characteristics including derivative instruments such as futures and options. For purposes of the Fund’s investment policies, equity securities include common stocks, depositary receipts, warrants, rights, and preferred shares.
Under normal circumstances, the Fund’s investments will be tied economically to at least 10 different countries other than the U.S and at least 40% of the Fund’s assets will be invested in companies tied economically to countries outside the U.S. The Fund will primarily invest in companies tied economically to developed market countries throughout the world, but may invest up to 10% of its assets in securities of issuers tied economically to emerging market countries.
Securities of foreign issuers may be purchased directly or through depositary receipts, including American Depositary Receipts (ADRs), European Depositary Receipts (EDRs), and Global Depositary Receipts (GDRs), or other securities representing underlying shares of foreign companies.
The Fund may have significant exposure to securities of issuers tied economically to Japan, Switzerland, France and the United Kingdom. The Fund may invest in securities denominated in major reserve currencies, such as the yen, swiss franc, euro and pound sterling. To the extent that the Fund has significant exposure to securities of companies tied economically to a particular country or countries (including Japan, Switzerland, France, and the United Kingdom), it generally will have corresponding exposure to the currency of such countries (including the yen, swiss franc, euro and pound sterling). The Fund also may have significant exposure to securities of issuers in the health care, industrial, financial, information technology and consumer discretionary sectors.
Domini Impact Investments LLC (the “Adviser”), the Fund’s adviser, seeks to identify investment opportunities for the Fund that create positive environmental and social outcomes for people and the planet while seeking competitive financial returns (“Impact Investing”). The Adviser identifies securities that are eligible for investment by the Fund based on the evaluation of environmental and social factors including the core business in which a company engages and/or how a company treats its key stakeholders, such as its customers, employees, suppliers, ecosystems, local, national and global communities, and/or investors (“environmental and social factors”).
Wellington Management Company LLP (the “Subadviser”), the Fund’s subadviser uses a proprietary quantitative model to select investments to buy and sell from among those which the Adviser has notified the Subadviser are eligible for investment, seeking to build the most attractive portfolio by purchasing the most attractive stocks (as determined by the Subadviser’s model) and selling the least attractive stocks (as determined by the
Subadviser’s model). The Fund also will sell securities that the Adviser determines are no longer eligible for investment based on the Adviser’s ongoing evaluation of environmental and social factors.
Risk [Heading] rr_RiskHeading Principal risks:
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
Principal risks:
Risk is inherent in all investing. The value of your investment in the Fund, as well as the amount of return you receive on your investment, may fluctuate significantly in the short and long term. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You may lose all or part of your investment in the Fund or your investment may not perform as well as other similar investments. There is no guarantee that the Fund’s investment objective will be achieved. The following is a summary description of certain risks of investing in the Fund. Each risk summarized below is a principal risk of investing in the Fund and different risks may be more significant at different times depending upon market conditions or other factors.
 
 
•
 
Foreign Investing and Emerging Markets Risk.
Investments in foreign regions may be more volatile and less liquid than U.S. investments due to adverse political, social, and economic developments, such as nationalization or expropriation of assets, confiscatory taxation, terrorism and political or financial instability; regulatory differences, such as accounting, auditing, and financial reporting standards and practices; natural disasters; and the degree of government oversight and supervision. These risks may be heightened in connection with investments in emerging market countries.
 
 
•
 
Geographic Focus Risk.
The Fund will be largely invested in companies based in Europe or the Asia-Pacific region. Market changes or other factors affecting these regions, including political instability and unpredictable economic conditions, could have a significant impact on the Fund due to its regional focus.
 
 
•
 
Country Risk.
The Fund expects to diversify its investments among issuers with significant exposure to various countries throughout the world. To the extent that the Fund invests from time to time a significant percentage of its assets in issuers tied economically to a particular country or countries, including Japan, Switzerland, France or the United Kingdom, the Fund may be particularly affected by the economic, political, and social conditions in that country, as well as by the spread of infectious illness or other public health issues.
 
 
-
Investing in Japan.
The Japanese economy is highly dependent upon international trade, particularly with the United States and other Asian countries. Because of its trade dependence, the Japanese economy is particularly exposed to the risks of currency fluctuation, foreign trade policy and regional and global economic disruption. In addition, the Japanese economy has been adversely affected by certain structural issues, including an aging population, an unstable financial sector, substantial government deficits, and natural and environmental disasters.
 
-
Investing in Switzerland.
Investments in Swiss issuers may subject the Fund to legal, regulatory, political, currency, security, and economic risks specific to Switzerland. International trade is a large component of the Swiss economy and Switzerland depends upon exports to generate economic growth. The Swiss economy relies on certain key trading partners in order to sustain continued economic growth. Switzerland’s economic growth generally mirrors slowdowns and growth spurts experienced in other countries, including the U.S. and certain Western European countries.
 
 
-
Investing in France.
The French economy, including demand for French exports, may be adversely affected by the U.K.’s exit from the European Union. The French economy also is susceptible to fluctuations in demand for agricultural products. France has experienced several terrorist attacks in the past several years.
 
 
-
Investing in the United Kingdom.
The U.K. has one of the largest economies in Europe, and the U.S. and other European countries are substantial trading partners of the U.K. As a result, the U.K.’s economy may be impacted by changes to the economic condition of the U.S. and other European countries. The U.K.’s economy will also be significantly affected by the U.K.’s exit from the European Union (commonly known as “Brexit”), which will likely place the country’s currency and banking system in jeopardy, and impact arrangements for trading and on other existing cross-border cooperation arrangements (whether economic, tax, fiscal, legal, regulatory or otherwise). The U.K.’s exit from the European Union will likely result in increased volatility, illiquidity and potentially lower economic growth in the affected markets, which will adversely affect the Funds’ investments.
 
 
•
 
Currency Risk.
Fluctuations between the U.S. dollar and foreign currency exchange rates could negatively affect the value of the Fund’s investments. This fluctuation can affect both the value of the currencies in which the Fund’s investments are traded or an active investment position. The Fund will benefit when foreign currencies, including the yen, the swiss franc, euro and the pound sterling, strengthen against the dollar and will be hurt when foreign currencies weaken against the dollar. Currency exchange rates can be volatile and are affected by factors such as general economic conditions, the actions of U.S. and foreign governments or central banks, the imposition of currency controls or restrictions, speculation, and the spread of infectious illness or other public health issues. Devaluation of a currency by a country’s government or banking authority also will have a significant impact on the value of any investments denominated in that currency. Currency markets generally are not as regulated as securities markets, may be riskier than other types of investments and may increase the volatility of the Fund.
 
 
•
 
Impact Investing Risk.
The Adviser’s evaluation of environmental and social factors in its investment selections and the timing of the Subadviser’s implementation of the Adviser’s investment selections will
 
affect the Fund’s exposure to certain issuers, industries, sectors, regions, and countries and may impact the relative financial performance of the Fund — positively or negatively — depending on whether such investments are in or out of favor.
 
 
•
 
Portfolio Management Risk
The value of your investment may decrease if the Adviser’s or Subadviser’s judgment about the attractiveness or value of, or market trends affecting a particular security, industry, sector or region, or about market movements, is incorrect or does not produce the desired results. In addition, the Fund’s investment strategies or policies may change from time to time. Those changes may not lead to the results intended by the Adviser or Subadviser and could have an adverse effect on the value or performance of the Fund.
 
 
•
 
Style Risk.
The value of your investment may decrease if the Subadviser’s quantitative investment approach does not respond well to current market conditions or its judgment regarding the quality, value, or market trends affecting a particular security, industry, sector, or region is incorrect. The Subadviser’s quantitative model relies upon a complex software system, and failure of the system to function or the presence of software errors could have an adverse impact on the value of Fund performance.
 
 
•
 
Information Risk.
There is a risk that information used by the Adviser to evaluate environmental and social factors, may not be readily available, complete, or accurate, which could negatively impact the Adviser’s ability to evaluate such factors and negatively impact Fund performance. This may also lead the Fund to avoid investment in certain issuers, industries, markets, sectors, or regions.
 
 
•
 
Market Risk.
The market values of securities or other assets will fluctuate, sometimes sharply and unpredictably, due to changes in general market conditions, overall economic trends or events, governmental actions or intervention, market disruptions caused by trade disputes or other factors, political developments, recessions, the spread of infectious illness or other public health issues, investor sentiment and other factors that may or may not be related to the issuer of the security or other asset. If the market values of the securities or other assets held by the Fund fall, including a complete loss on any individual security, the value of your investment will go down. Economies and financial markets throughout the world are increasingly interconnected. Economic, financial or political events, trading or tariff arrangements, terrorism, natural disasters, global pandemics and other circumstances in one country or region could have profound impacts on global economies or markets. As a result, whether or not the Fund invests in securities of issuers located in or with significant exposure to the countries directly affected, the value and liquidity of the Fund’s investments may be negatively affected.
 
 
•
 
Recent events.
The illness
COVID-19
caused by a novel coronavirus has resulted in a global pandemic and major disruption to economies and markets around the world, including the United States. Global financial markets have experienced extreme volatility and severe losses, and
 
trading in many instruments has been disrupted. Liquidity for many instruments has been greatly reduced for periods of time. Some interest rates are very low and in some cases yields are negative. Some sectors of the economy and individual issuers have experienced particularly large losses. These circumstances may continue for an extended period of time and may adversely affect the value and/or liquidity of the Fund’s investments. In addition, the impact of infectious illnesses in emerging market countries may be greater due to generally less established healthcare systems. Public health crises caused by the
COVID-19
outbreak may exacerbate other
pre-existing
political, social and economic risks in certain countries or globally. The ultimate economic fallout from the pandemic, and the long-term impact on economies, markets, industries and individual issuers, are not known. Governments and central banks, including the Federal Reserve in the U.S., have taken extraordinary and unprecedented actions to support national economies and the financial markets. These actions have resulted in significant expansion of public debt, including in the U.S. The impact of these measures, and whether they will be effective to mitigate the economic and market disruption, may not be known for some time. The consequences of high public debt, including its future impact on the economy and securities markets, likewise may not be known for some time.
 
 
•
 
Mid-to
Large-Cap
Companies Risk.
The market prices of companies at different capitalization levels may go up or down due to general market conditions and cycles. The value of your investment will be affected by the Fund’s exposure to
mid-
and
large-cap
companies.
 
 
•
 
Market Sector Risk.
The Fund may hold a large percentage of securities in a single market sector (e.g., financials). To the extent the Fund holds a large percentage of securities in a single sector, its performance will be tied closely to and affected by the performance of that sector, and the Fund will be subject to a greater degree to any market price movements, regulator or technological change, economic conditions, the spread of infectious illness or other public health issues, or other developments or risks affecting such market sector than a Fund without the same focus.
 
 
-
Health Care Sector Risk.
Securities in the health care sector, such as health care supplies, health care services, biotechnology and pharmaceuticals, may be significantly affected by government regulation and reimbursement rates, approval of products by government agencies, and patent expirations and litigation.
 
 
-
Industrial Sector Risk.
Securities in the industrials sector, such as companies engaged in the production, distribution or service of products or equipment for manufacturing, agriculture, forestry, mining and construction, can be significantly affected by general economic trends, including such factors as employment and economic growth, interest rate changes, changes in consumer spending, legislative and governmental regulation and spending, import controls, commodity prices, and worldwide competition.
 
-
Financial Sector Risk.
Issuers in the financial sector, such as banks, insurance companies and broker-dealers, may be sensitive to changes in interest rates and general economic activity and are generally subject to extensive government regulation.
 
 
-
Information Technology Sector Risk.
Information technology companies face intense competition and potentially rapid obsolescence. They are also heavily dependent on intellectual property rights and may be adversely affected by the loss or impairment of such rights.
 
 
-
Consumer Discretionary Sector Risk.
Securities in the consumer discretionary sector, such as consumer durables, hotels, restaurants, media, retailing and automobiles, may be significantly affected by the performance of the overall economy, interest rates, competition, consumer confidence and spending, and changes in demographics and consumer tastes.
 
 
•
 
Portfolio Turnover Risk.
If the Fund does a lot of trading it may incur additional operating expenses which would reduce performance and could cause shareowners to incur a higher level of taxable income or capital gains.
 
 
•
 
Redemption Risk.
The Fund may experience heavy redemptions that could cause it to liquidate its assets at inopportune times or at a loss or depressed value, which could cause the value of your investment to decline.
 
 
•
 
Cybersecurity Risk.
Cybersecurity failures by or breaches of the Fund’s adviser, transfer agent, distributor, custodian, fund accounting agent or other service providers may disrupt Fund operations, interfere with the Fund’s ability to calculate its NAV, prevent Fund shareholders from purchasing, redeeming or exchanging shares or receiving distributions, cause loss of or unauthorized access to private shareholder information, and result in financial losses, regulatory fines, penalties, reputational damage, or additional compliance costs.
These and other risks are discussed in more detail later in this prospectus or in the SAI. Please note that there are many other factors that could adversely affect your investment and that could prevent the Fund from achieving its goals.
Risk Lose Money [Text] rr_RiskLoseMoney An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution You may lose all or part of your investment in the Fund or your investment may not perform as well as other similar investments.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Investment results
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year for Investor shares and by showing how the Fund’s average annual total returns for 1, 5, and 10 years, compare with those of a broad measure of market performance, the Morgan Stanley Capital International Europe, Australasia, and Far East Index (MSCI EAFE), a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets, excluding the U.S. and Canada. MSCI EAFE (net) is net of withholding taxes on the reinvestment of dividends, but reflects no other deduction for fees, expenses, or taxes. The returns for each class of the Fund will differ from Investor shares because of the different expenses applicable to those share classes. The returns presented in the table for periods prior to the inception of the Institutional and Class Y shares are those of the Investor shares. Institutional shares commenced operations on November 30, 2012. Class Y shares commenced operations on July 23, 2018. These returns have not been adjusted to take into account the lower expenses applicable to Institutional and Class Y sharesUpdated information on the Fund’s investment results can be obtained by visiting
domini.com/performance
or by calling
1-800-582-6757.
The Fund’s past results (before and after taxes) are not necessarily an indication of how the Fund will perform in the future.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-800-582-6757
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress domini.com/performance
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund’s past results (before and after taxes) are not necessarily an indication of how the Fund will perform in the future.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock Highest
/Lowest
quarterly results during this time period were: 17.64% (quarter ended 9/30/2010) and –22.08% (quarter ended 9/30/2011). The Fund’s
year-to-date
results as of the most recent calendar quarter ended 09/30/2020 were 7.66%.
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2019(with maximum sales charge for Class A shares)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the highest individual marginal federal income tax rates in effect during each year of the periods shown and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns depend on your individual tax situation and likely will differ from the results shown above. In addition, after-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as a 401(k) plan or individual retirement account (IRA).
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor shares; after-tax returns for other share classes will vary.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
After-tax
returns are shown only for Investor shares;
after-tax
returns for other share classes will vary.
After-tax
returns are calculated using the highest individual marginal federal income tax rates in effect during each year of the periods shown and do not reflect the impact of state and local taxes. Your actual
after-tax
returns depend on your individual tax situation and likely will differ from the results shown above. In addition,
after-tax
returns are not relevant to investors who hold their Fund shares through
tax-deferred
arrangements, such as a 401(k) plan or individual retirement account (IRA).​​​​​​​
Domini Impact International Equity Fund | Investor  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum sales charge (load) imposed on purchases as a percentage of purchase or redemption rr_MaximumDeferredSalesChargeOverOther none
Redemption fee on shares held less than 30 days (as a percentage of amount redeemed, if applicable) rr_RedemptionFeeOverRedemption 2.00%
Paper document delivery fee (choose e-delivery to avoid this fee) rr_MaximumAccountFee $ 15 [1]
Outgoing bank wire transfer fee (deducted directly from sale proceeds) rr_ShareholderFeeOther $ 15
Management Fees rr_ManagementFeesOverAssets 0.85% [2]
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.28%
Total annual Fund operating expenses rr_ExpensesOverAssets 1.38% [2]
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets none
Total Annual Fund Operating Expenses after Fee Waivers and Expense Reimbursements rr_NetExpensesOverAssets 1.38%
1 Year rr_ExpenseExampleYear01 $ 141
3 Years rr_ExpenseExampleYear03 437
5 Years rr_ExpenseExampleYear05 755
10 Years rr_ExpenseExampleYear10 1,657
1 Year rr_ExpenseExampleNoRedemptionYear01 141
3 Years rr_ExpenseExampleNoRedemptionYear03 437
5 Years rr_ExpenseExampleNoRedemptionYear05 755
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,657
2010 rr_AnnualReturn2010 11.25%
2011 rr_AnnualReturn2011 (13.45%)
2012 rr_AnnualReturn2012 22.53%
2013 rr_AnnualReturn2013 25.77%
2014 rr_AnnualReturn2014 (3.27%)
2015 rr_AnnualReturn2015 1.76%
2016 rr_AnnualReturn2016 3.05%
2017 rr_AnnualReturn2017 24.60%
2018 rr_AnnualReturn2018 (16.34%)
2019 rr_AnnualReturn2019 16.95%
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2020
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 7.66%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2010
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 17.64%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (22.08%)
1 Year rr_AverageAnnualReturnYear01 16.95%
5 Years rr_AverageAnnualReturnYear05 5.04%
10 Years rr_AverageAnnualReturnYear10 6.26%
Domini Impact International Equity Fund | Class A  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 4.75%
Maximum sales charge (load) imposed on purchases as a percentage of purchase or redemption rr_MaximumDeferredSalesChargeOverOther none [3]
Redemption fee on shares held less than 30 days (as a percentage of amount redeemed, if applicable) rr_RedemptionFeeOverRedemption 2.00%
Paper document delivery fee (choose e-delivery to avoid this fee) rr_MaximumAccountFee $ 15 [1]
Outgoing bank wire transfer fee (deducted directly from sale proceeds) rr_ShareholderFeeOther $ 15
Management Fees rr_ManagementFeesOverAssets 0.85% [2]
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.44%
Total annual Fund operating expenses rr_ExpensesOverAssets 1.54% [2]
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.14%) [4]
Total Annual Fund Operating Expenses after Fee Waivers and Expense Reimbursements rr_NetExpensesOverAssets 1.40%
1 Year rr_ExpenseExampleYear01 $ 611
3 Years rr_ExpenseExampleYear03 925
5 Years rr_ExpenseExampleYear05 1,262
10 Years rr_ExpenseExampleYear10 2,211
1 Year rr_ExpenseExampleNoRedemptionYear01 611
3 Years rr_ExpenseExampleNoRedemptionYear03 925
5 Years rr_ExpenseExampleNoRedemptionYear05 1,262
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,211
1 Year rr_AverageAnnualReturnYear01 11.27%
5 Years rr_AverageAnnualReturnYear05 3.98%
10 Years rr_AverageAnnualReturnYear10 5.73%
Domini Impact International Equity Fund | Institutional  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases as a percentage of offering price rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum sales charge (load) imposed on purchases as a percentage of purchase or redemption rr_MaximumDeferredSalesChargeOverOther none
Redemption fee on shares held less than 30 days (as a percentage of amount redeemed, if applicable) rr_RedemptionFeeOverRedemption 2.00%
Paper document delivery fee (choose e-delivery to avoid this fee) rr_MaximumAccountFee $ 15 [1]
Outgoing bank wire transfer fee (deducted directly from sale proceeds) rr_ShareholderFeeOther $ 15
Management Fees rr_ManagementFeesOverAssets 0.85% [2]
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.10%
Total annual Fund operating expenses rr_ExpensesOverAssets 0.95% [2]
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets none
Total Annual Fund Operating Expenses after Fee Waivers and Expense Reimbursements rr_NetExpensesOverAssets 0.95%
1 Year rr_ExpenseExampleYear01 $ 97
3 Years rr_ExpenseExampleYear03 303
5 Years rr_ExpenseExampleYear05 525
10 Years rr_ExpenseExampleYear10 1,166
1 Year rr_ExpenseExampleNoRedemptionYear01 97
3 Years rr_ExpenseExampleNoRedemptionYear03 303
5 Years rr_ExpenseExampleNoRedemptionYear05 525
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,166
1 Year rr_AverageAnnualReturnYear01 17.27%
5 Years rr_AverageAnnualReturnYear05 5.45%
10 Years rr_AverageAnnualReturnYear10 6.26%
Domini Impact International 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 sales charge (load) imposed on purchases as a percentage of purchase or redemption rr_MaximumDeferredSalesChargeOverOther none
Redemption fee on shares held less than 30 days (as a percentage of amount redeemed, if applicable) rr_RedemptionFeeOverRedemption 2.00%
Paper document delivery fee (choose e-delivery to avoid this fee) rr_MaximumAccountFee $ 15 [1]
Outgoing bank wire transfer fee (deducted directly from sale proceeds) rr_ShareholderFeeOther $ 15
Management Fees rr_ManagementFeesOverAssets 0.85% [2]
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.21%
Total annual Fund operating expenses rr_ExpensesOverAssets 1.06% [2]
Fee waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets none
Total Annual Fund Operating Expenses after Fee Waivers and Expense Reimbursements rr_NetExpensesOverAssets 1.06%
1 Year rr_ExpenseExampleYear01 $ 108
3 Years rr_ExpenseExampleYear03 337
5 Years rr_ExpenseExampleYear05 585
10 Years rr_ExpenseExampleYear10 1,294
1 Year rr_ExpenseExampleNoRedemptionYear01 108
3 Years rr_ExpenseExampleNoRedemptionYear03 337
5 Years rr_ExpenseExampleNoRedemptionYear05 585
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,294
1 Year rr_AverageAnnualReturnYear01 17.25%
5 Years rr_AverageAnnualReturnYear05 5.04%
10 Years rr_AverageAnnualReturnYear10 6.26%
Domini Impact International Equity Fund | Return After Taxes on Distributions | Investor  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 16.48%
5 Years rr_AverageAnnualReturnYear05 4.51%
10 Years rr_AverageAnnualReturnYear10 5.51%
Domini Impact International Equity Fund | Return After Taxes on Distributions and Sale of Fund Shares | Investor  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 10.85%
5 Years rr_AverageAnnualReturnYear05 4.08%
10 Years rr_AverageAnnualReturnYear10 5.07%
Domini Impact International Equity Fund | MSCI EAFE (net of withholding tax) (reflects no deduction for fees, expenses, or taxes except foreign withholding taxes on reinvested dividends)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 22.01%
5 Years rr_AverageAnnualReturnYear05 5.67%
10 Years rr_AverageAnnualReturnYear10 5.50%
[1] Paper document delivery fee applies to direct Fund accounts with balances below $10,000 and may be avoided by choosing e-delivery of Fund statements, prospectuses, and reports.
[2] Restated to reflect current fees.
[3] Investments of $1 million or more are not subject to a front-end sales charge, but generally will be subject to a deferred sales charge of 1.00% if redeemed within one year of purchase.
[4] The Fund’s adviser has contractually agreed to waive certain fees and/or reimburse certain ordinary operating expenses in order to limit Class A shares to 1.40%. This expense limitation is in effect through November 30, 2021. There can be no assurance that the Adviser will extend the expense limitations beyond such time. While in effect, the arrangement may be terminated for a class only by agreement of the Adviser and the Fund’s Board of Trustees.