Label	Element	Value
Risk Return Abstract	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	DEUTSCHE DWS GLOBAL/INTERNATIONAL FUND, INC.
Prospectus Date	rr_ProspectusDate	Mar. 01, 2022
DWS Global Small Cap Fund
Risk Return Abstract	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	<span style="color:#000000;font-family:Arial;font-size:14pt;">DWS Global Small Cap Fund</span>
Objective [Heading]	rr_ObjectiveHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">Investment Objective</span>
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The fund seeks above-average capital appreciation over the long term.
Expense [Heading]	rr_ExpenseHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">Fees and Expenses</span>
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	These are the fees and expenses you may pay when you buy, hold and sell shares. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts in Class A shares if you and your immediate family invest, or agree to invest in the future, at least $50,000 in DWS funds. You may qualify for sales charge discounts if you invest at least $250,000 in Class T shares in the fund. More information about these and other discounts and waivers is available from your financial representative and in Choosing a Share Class (p. 82), Sales Charge Waivers and Discounts Available Through Intermediaries (Appendix B, p. 152) and Purchase and Redemption of Shares in the fund’s Statement of Additional Information (SAI) (p. II-15).
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	<span style="color:#000000;font-family:Arial;font-size:10pt;text-transform:uppercase;">SHAREHOLDER FEES </span><span style="color:#000000;font-family:Arial;font-size:8pt;">(paid directly from your investment)</span>
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	<span style="color:#000000;font-family:Arial;font-size:10pt;text-transform:uppercase;">ANNUAL FUND OPERATING EXPENSES</span><span style="color:#000000;font-family:Arial;font-size:8pt;margin-left:0%;">(expenses that you pay each year as a % of the value of your investment)</span>
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	<span style="color:#000000;font-family:Arial;font-size:10pt;">February 28, </span><span style="color:#000000;font-family:Arial;font-size:10pt;">2023</span>
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;text-transform:uppercase;">PORTFOLIO TURNOVER </span>
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 may indicate higher transaction costs and may mean higher taxes if you are investing in a taxable account. These costs are not reflected in annual fund operating expenses or in the expense example, and can affect the fund's performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 29% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	29.00%
Expense Footnotes [Text Block]	rr_ExpenseFootnotesTextBlock	The Advisor has contractually agreed through February 28, 2023 to waive its fees and/or reimburse fund expenses to the extent necessary to maintain the fund’s total annual operating expenses (excluding certain expenses such as extraordinary expenses, taxes, brokerage, interest and acquired fund fees and expenses) at ratios no higher than 1.38%, 1.38%, 2.13% and 1.13% for Class A, Class T, Class C and Institutional Class, respectively. The agreement may only be terminated with the consent of the fund’s Board.
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	Investments of $1,000,000 or more may be eligible to buy Class A shares without a sales charge (load), but may be subject to a contingent deferred sales charge of 1.00% if redeemed within 12 months of the original purchase date and 0.50% if redeemed within the following six months.
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	<span style="color:#000000;font-family:Arial;font-size:10pt;">You may qualify for sales charge </span><span style="color:#000000;font-family:Arial;font-size:10pt;">discounts in Class A shares if you and your immediate family invest, or agree to invest in the future, at least </span><span style="color:#000000;font-family:Arial;font-size:10pt;">$50,000</span><span style="color:#000000;font-family:Arial;font-size:10pt;"> in DWS funds. You may qualify for sales charge discounts if you invest at least $250,000 in Class T shares in the fund.</span>
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Expense Example [Heading]	rr_ExpenseExampleHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;text-transform:uppercase;">EXAMPLE</span>
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. The Example also assumes that your investment has a 5% return each year and that the fund's operating expenses (including one year of capped expenses in each period for Class A, Class T, Class C and Institutional Class) remain the same. Class C shares generally convert automatically to Class A shares after 8 years. The information presented in the Example for Class C reflects the conversion of Class C shares to Class A shares after 8 years. See “Class C Shares” in the “Choosing a Share Class” section of the prospectus for more information. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, No Redemption Narrative [Text Block]	rr_ExpenseExampleNoRedemptionNarrativeTextBlock	You would pay the following expenses if you did not redeem your shares:
Strategy [Heading]	rr_StrategyHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">Principal Investment Strategies</span>
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Main investments. The fund invests at least 80% of net assets, plus the amount of any borrowings for investment purposes, in common stocks and other equities of small companies throughout the world (companies with market values similar to the smallest 30% of the aggregate market capitalization of the S&P Developed Broad Market Index). As of December 31, 2021, the market capitalization of the smallest 30% of the aggregate market capitalization of the S&P Developed Broad Market Index was between $20.4 million and $26.17 billion.While the fund may invest in securities of any country, portfolio management generally focuses on countries with developed economies (including the US).Management process. In choosing stocks, portfolio management uses proprietary quantitative models to identify and acquire holdings for the fund. The quantitative models are research based and identify primarily fundamental factors, including valuation, momentum, profitability, earnings and sales growth, which have been effective sources of return historically. These are dynamic models with different factor weights for different industry groupings. The fund’s portfolio is constructed based on this quantitative process that strives to maximize returns while maintaining a risk profile similar to the fund’s benchmark index. The use of dynamic models allows the investment process to capture changing market factors which can impact the outcome of the portfolio rebalancing process.At the discretion of portfolio management, systematically selected securities may be excluded from the portfolio based upon additional fundamental considerations, such as fundamental analysts' ratings or the Advisor's Environmental, Social and Governance (ESG) analysis, including when portfolio management believes a security has negative ESG risks and/or characteristics which might have a financially material impact on fund performance. In evaluating ESG issues, portfolio management refers to internal securities specific ESG ratings, internal and external ESG research and other factors and may focus on governance matters in particular. Such variations from the models are expected to be infrequent. Securities excluded on such discretion will be replaced by other systematically selected securities. Other equity investments are selected by portfolio management based on their risk and return profile which in turn points to their ability to help achieve the fund’s target risk and contribute to performance.Portfolio management may sell a security when its quantitative model indicates that other investments are more attractive, when the company no longer meets performance or risk expectations, or to maintain portfolio characteristics similar to the fund’s benchmark.All investment decisions are made within risk parameters set by portfolio management. The factors considered and models used by portfolio management may be adjusted from time to time and may favor different types of securities from different industries and companies at different times.Securities lending. The fund may lend securities (up to one-third of total assets) to approved institutions, such as registered broker-dealers, banks and pooled investment vehicles.
Risk [Heading]	rr_RiskHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">Main Risks</span>
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	There are several risk factors that could hurt the fund’s performance, cause you to lose money or cause the fund’s performance to trail that of other investments. The fund may not achieve its investment objective, and is not intended to be a complete investment program. An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency.Stock market risk. When stock prices fall, you should expect the value of your investment to fall as well. Stock prices can be hurt by poor management on the part of the stock’s issuer, shrinking product demand and other business risks. These may affect single companies as well as groups of companies. The market as a whole may not favor the types of investments the fund makes, which could adversely affect a stock’s price, regardless of how well the company performs, or the fund’s ability to sell a stock at an attractive price. There is a chance that stock prices overall will decline because stock markets tend to move in cycles, with periods of rising and falling prices. Events in the US and global financial markets, including actions taken by the US Federal Reserve or foreign central banks to stimulate or stabilize economic growth, may at times result in unusually high market volatility which could negatively affect performance. High market volatility may also result from significant shifts in momentum of one or more specific stocks due to unusual increases or decreases in trading activity. Momentum can change quickly, and securities subject to shifts in momentum may be more volatile than the market as a whole and returns on such securities may drop precipitously. To the extent that the fund invests in a particular geographic region, capitalization or sector, the fund’s performance may be affected by the general performance of that region, capitalization or sector.Market disruption risk. Geopolitical and other events, including war, terrorism, economic uncertainty, trade disputes, public health crises and related geopolitical events have led, and in the future may lead, to disruptions in the US and world economies and markets, which may increase financial market volatility and have significant adverse direct or indirect effects on the fund and its investments. Market disruptions could cause the fund to lose money, experience significant redemptions, and encounter operational difficulties. Although multiple asset classes may be affected by a market disruption, the duration and effects may not be the same for all types of assets.Russia's recent military incursions in Ukraine have led to, and may lead to additional sanctions being levied by the United States, European Union and other countries against Russia. Russia's military incursion and the resulting sanctions could adversely affect global energy and financial markets and thus could affect the value of the fund's investments, even beyond any direct exposure the fund may have to Russian issuers or the adjoining geographic regions. The extent and duration of the military action, sanctions and resulting market disruptions are impossible to predict, but could be substantial. Any such disruptions caused by Russian military action or resulting sanctions may magnify the impact of other risks described in this “MAIN RISKS” section.Other recent market disruption events include the pandemic spread of the novel coronavirus known as COVID-19, and the significant uncertainty, market volatility, decreased economic and other activity, increased government activity, including economic stimulus measures, and supply chain disruptions that it has caused. The full effects, duration and costs of the COVID-19 pandemic are impossible to predict, and the circumstances surrounding the COVID-19 pandemic will continue to evolve, including the risk of future increased rates of infection due to low vaccination rates and/or the lack of effectiveness of current vaccines against new variants. The pandemic has affected and may continue to affect certain countries, industries, economic sectors, companies and investment products more than others, may exacerbate existing economic, political, or social tensions and may increase the probability of an economic recession or depression. The fund and its investments may be adversely affected by the effects of the COVID-19 pandemic, and the pandemic may result in the fund and its service providers experiencing operational difficulties in coordinating a remote workforce and implementing their business continuity plans, among others. The disruptions caused by the COVID-19 pandemic may magnify the impact of each of the other risks described in this “MAIN RISKS” section and may increase volatility in one or more markets in which the fund invests leading to the potential for greater losses for the fund.Small company risk. Small company stocks tend to be more volatile than medium-sized or large company stocks. Because stock analysts are less likely to follow small companies, less information about them is available to investors. Industry-wide reversals may have a greater impact on small companies, since they may lack the financial resources of larger companies. Small company stocks are typically less liquid than large company stocks.Foreign investment risk. The fund faces the risks inherent in foreign investing. Adverse political, economic or social developments, as well as US and foreign government actions such as the imposition of tariffs, economic and trade sanctions or embargoes, could undermine the value of the fund’s investments, prevent the fund from realizing the full value of its investments or prevent the fund from selling securities it holds. In June 2016, citizens of the United Kingdom approved a referendum to leave the European Union (EU) and in March 2017, the United Kingdom initiated the formal process of withdrawing from the EU. On January 31, 2020, the United Kingdom officially withdrew from the EU pursuant to a withdrawal agreement, providing for a transition period in which the United Kingdom negotiated and finalized a trade deal with the EU, the EU-UK Trade and Cooperation Agreement (the Trade Agreement). As a result, as of January 1, 2021 the United Kingdom is no longer part of the EU customs union and single market, nor is it subject to EU policies and international agreements. Among other things, the Trade Agreement provides for zero tariffs and zero quotas on all goods that comply with appropriate rules of origin and establishes the treatment and level of access the United Kingdom and EU have agreed to grant each other’s service suppliers and investors. In addition to trade in goods and services and investment, the Trade Agreement also covers digital trade, intellectual property, public procurement, aviation and road transport, energy, fisheries, social security coordination, law enforcement and judicial cooperation in criminal matters, thematic cooperation and participation in EU programs. Even with the Trade Agreement in place, the United Kingdom’s withdrawal from the EU may create new barriers to trade in goods and services and to cross-border mobility and exchanges, including with respect to trade in financial services which is not comprehensively addressed in the Trade Agreement and remains subject to negotiation between the United Kingdom and the EU. The long-term impact of the United Kingdom’s withdrawal from the EU is still unknown and could have adverse economic and political effects on the United Kingdom, the EU and its member countries, and the global economy, including financial markets and asset valuations.Financial reporting standards for companies based in foreign markets differ from those in the US. Additionally, foreign securities markets generally are smaller and less liquid than US markets. To the extent that the fund invests in non-US dollar denominated foreign securities, changes in currency exchange rates may affect the US dollar value of foreign securities or the income or gain received on these securities. In addition, because non-US markets may be open on days when the fund does not price its shares, the value of the securities in the fund’s portfolio may change on days when shareholders will not be able to purchase or sell the fund’s shares.Emerging markets risk. Foreign investment risks are greater in emerging markets than in developed markets. Investments in emerging markets are often considered speculative.Currency risk. Changes in currency exchange rates may affect the value of the fund’s investments and the fund’s share price. The value of currencies are influenced by a variety of factors, that include: interest rates, national debt levels and trade deficits, changes in balances of payments and trade, domestic and foreign interest and inflation rates, global or regional political, economic or financial events, monetary policies of governments, actual or potential government intervention, global energy prices, political instability and government monetary policies and the buying or selling of currency by a country’s government. Investments in foreign currencies are subject to the risk that those currencies will decline in value relative to the US dollar or, in the case of hedged positions, that the US dollar will decline relative to the currency being hedged. Currency exchange rates can be volatile and can change quickly and unpredictably, thereby impacting the value of the fund’s investments.Liquidity risk. In certain situations, it may be difficult or impossible to sell an investment and/or the fund may sell certain investments at a price or time that is not advantageous in order to meet redemption requests or other cash needs. Unusual market conditions, such as an unusually high volume of redemptions or other similar conditions could increase liquidity risk for the fund.Pricing risk. If market conditions make it difficult to value some investments, the fund may value these investments using more subjective methods, such as fair value pricing. In such cases, the value determined for an investment could be different from the value realized upon such investment’s sale. As a result, you could pay more than the market value when buying fund shares or receive less than the market value when selling fund shares.Security selection risk. The securities in the fund’s portfolio may decline in value. Portfolio management could be wrong in its analysis of industries, companies, economic trends, ESG factors, the relative attractiveness of different securities or other matters.Quantitative model risk. The fund’s strategy relies heavily on quantitative models and the analysis of specific metrics to construct the fund’s portfolio. The impact of these metrics on a stock’s performance can be difficult to predict, and stocks that previously possessed certain desirable quantitative characteristics may not continue to demonstrate those same characteristics in the future. In addition, relying on quantitative models entails the risk that the models themselves may be limited or incorrect, that the data on which the models rely may be incorrect or incomplete, and that the Advisor may not be successful in selecting companies for investment or determining the weighting of particular stocks in the fund’s portfolio. Any of these factors could cause the fund to underperform funds with similar strategies that do not select stocks based on quantitative analysis.Securities lending risk. Securities lending involves the risk that the fund may lose money because the borrower of the loaned securities fails to return the securities in a timely manner or at all. The fund could also lose money in the event of a decline in the value of the collateral provided for the loaned securities, or a decline in the value of any investments made with cash collateral or even a loss of rights in the collateral should the borrower of the securities fail financially while holding the securities.Counterparty risk. A financial institution or other counterparty with whom the fund does business, or that underwrites, distributes or guarantees any investments or contracts that the fund owns or is otherwise exposed to, may decline in financial health and become unable to honor its commitments. This could cause losses for the fund or could delay the return or delivery of collateral or other assets to the fund.Operational and technology risk. Cyber-attacks, disruptions or failures that affect the fund’s service providers or counterparties, issuers of securities held by the fund, or other market participants may adversely affect the fund and its shareholders, including by causing losses for the fund or impairing fund operations. For example, the fund’s or its service providers’ assets or sensitive or confidential information may be misappropriated, data may be corrupted and operations may be disrupted (e.g., cyber-attacks, operational failures or broader disruptions may cause the release of private shareholder information or confidential fund information, interfere with the processing of shareholder transactions, impact the ability to calculate the fund’s net asset value and impede trading). Market events and disruptions also may trigger a volume of transactions that overloads current information technology and communication systems and processes, impacting the ability to conduct the fund’s operations.While the fund and its service providers may establish business continuity and other plans and processes that seek to address the possibility of and fallout from cyber-attacks, disruptions or failures, there are inherent limitations in such plans and systems, including that they do not apply to third parties, such as fund counterparties, issuers of securities held by the fund or other market participants, as well as the possibility that certain risks have not been identified or that unknown threats may emerge in the future and there is no assurance that such plans and processes will be effective. Among other situations, disruptions (for example, pandemics or health crises) that cause prolonged periods of remote work or significant employee absences at the fund’s service providers could impact the ability to conduct the fund’s operations. In addition, the fund cannot directly control any cybersecurity plans and systems put in place by its service providers, fund counterparties, issuers of securities held by the fund or other market participants.
Risk Lose Money [Text]	rr_RiskLoseMoney	<span style="color:#000000;font-family:Arial;font-size:10pt;">There are several risk factors that could hurt the fund’s performance, cause you to lose money or cause the fund’s performance to trail that of other investments. </span>
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	<span style="color:#000000;font-family:Arial;font-size:10pt;">An investment</span><span style="color:#000000;font-family:Arial;font-size:10pt;"> in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency.</span>
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">Past Performance</span>
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	How a fund's returns vary from year to year can give an idea of its risk; so can comparing fund performance to overall market performance (as measured by an appropriate market index).Past performance may not indicate future results. All performance figures below assume that dividends and distributions were reinvested. For more recent performance figures, go to dws.com (the Web site does not form a part of this prospectus) or call the telephone number included in this prospectus.The performance figures for Class T shares prior to class inception are based on the historical performance of the fund’s Class S shares adjusted to reflect the higher expenses and applicable sales charges of Class T.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	<span style="color:#000000;font-family:Arial;font-size:10pt;">How a fund's returns vary from year to year can give an idea of its risk; so can comparing fund performance to overall market performance (as measured by an appropriate market index).</span>
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	<span style="color:#000000;font-family:Arial;font-size:10pt;">dws.com</span>
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	<span style="color:#000000;font-family:Arial;font-size:10pt;">Past performance may not indicate </span><span style="color:#000000;font-family:Arial;font-size:10pt;">future results.</span>
Bar Chart [Heading]	rr_BarChartHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;text-transform:uppercase;">CALENDAR YEAR TOTAL RETURNS </span><span style="color:#000000;font-family:Arial;font-size:8pt;">(%) (Class A)</span>
Bar Chart Narrative [Text Block]	rr_BarChartNarrativeTextBlock	These year-by-year returns do not include sales charges, if any, and would be lower if they did. Returns for other classes were different and are not shown here.
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	<span style="color:#000000;font-family:Arial;font-size:10pt;">These year-by-year returns do not include sales charges, if any, and would be lower if they did.</span>
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	ReturnsPeriod endingBest Quarter24.58%June 30, 2020Worst Quarter-29.84%March 31, 2020
Performance Table Heading	rr_PerformanceTableHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;text-transform:uppercase;">Average Annual Total Returns</span> <br/><span style="color:#000000;font-family:Arial;font-size:8pt;margin-left:0%;">(For periods ended 12/31/2021 expressed as a %)</span>
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	<span style="color:#000000;font-family:Arial;font-size:10pt;">After-tax returns (which are shown only for Class A and would be different for other classes)</span><span style="color:#000000;font-family:Arial;font-size:10pt;"> reflect the historical </span><span style="color:#000000;font-family:Arial;font-size:10pt;">highest individual federal income tax rates, but do not reflect any state or local taxes.</span>
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	<span style="color:#000000;font-family:Arial;font-size:10pt;">After-tax returns are not relevant to </span><span style="color:#000000;font-family:Arial;font-size:10pt;">shares held in an IRA, 401(k) or other tax-advantaged investment plan.</span>
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	<span style="color:#000000;font-family:Arial;font-size:10pt;">After-tax returns (which are shown only for Class A and would be different for other classes)</span>
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns (which are shown only for Class A and would be different for other classes) reflect the historical highest individual federal income tax rates, but do not reflect any state or local taxes. Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an IRA, 401(k) or other tax-advantaged investment plan.
DWS Global Small Cap Fund | Class A
Risk Return Abstract	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases, as % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load), as % of redemption proceeds	rr_MaximumDeferredSalesChargeOverOther	none	[1]
Account Maintenance Fee (annually, for fund account balances below $10,000 and subject to certain exceptions)	rr_MaximumAccountFee	$ 20
Management fee	rr_ManagementFeesOverAssets	0.80%
Distribution/service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.24%
Other expenses	rr_OtherExpensesOverAssets	0.43%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.47%
Fee waiver/expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	0.09%
Total annual fund operating expenses after fee waiver/expense reimbursement	rr_NetExpensesOverAssets	1.38%
1 Year	rr_ExpenseExampleYear01	$ 707
3 Years	rr_ExpenseExampleYear03	1,005
5 Years	rr_ExpenseExampleYear05	1,323
10 Years	rr_ExpenseExampleYear10	2,224
1 Year	rr_ExpenseExampleNoRedemptionYear01	707
3 Years	rr_ExpenseExampleNoRedemptionYear03	1,005
5 Years	rr_ExpenseExampleNoRedemptionYear05	1,323
10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 2,224
2012	rr_AnnualReturn2012	14.76%
2013	rr_AnnualReturn2013	34.36%
2014	rr_AnnualReturn2014	(4.79%)
2015	rr_AnnualReturn2015	0.54%
2016	rr_AnnualReturn2016	1.69%
2017	rr_AnnualReturn2017	19.40%
2018	rr_AnnualReturn2018	(21.94%)
2019	rr_AnnualReturn2019	21.98%
2020	rr_AnnualReturn2020	16.71%
2021	rr_AnnualReturn2021	14.67%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Best Quarter</span>
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2020
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	24.58%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Worst Quarter</span>
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Mar. 31, 2020
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(29.84%)
DWS Global Small Cap Fund | Class T
Risk Return Abstract	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases, as % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	2.50%
Maximum deferred sales charge (load), as % of redemption proceeds	rr_MaximumDeferredSalesChargeOverOther	none	[1]
Account Maintenance Fee (annually, for fund account balances below $10,000 and subject to certain exceptions)	rr_MaximumAccountFee	none
Management fee	rr_ManagementFeesOverAssets	0.80%
Distribution/service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.34%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.39%
Fee waiver/expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	0.01%
Total annual fund operating expenses after fee waiver/expense reimbursement	rr_NetExpensesOverAssets	1.38%
1 Year	rr_ExpenseExampleYear01	$ 387
3 Years	rr_ExpenseExampleYear03	678
5 Years	rr_ExpenseExampleYear05	991
10 Years	rr_ExpenseExampleYear10	1,876
1 Year	rr_ExpenseExampleNoRedemptionYear01	387
3 Years	rr_ExpenseExampleNoRedemptionYear03	678
5 Years	rr_ExpenseExampleNoRedemptionYear05	991
10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 1,876
DWS Global Small Cap Fund | Class C
Risk Return Abstract	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases, as % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load), as % of redemption proceeds	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Account Maintenance Fee (annually, for fund account balances below $10,000 and subject to certain exceptions)	rr_MaximumAccountFee	$ 20
Management fee	rr_ManagementFeesOverAssets	0.80%
Distribution/service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.49%
Total annual fund operating expenses	rr_ExpensesOverAssets	2.29%
Fee waiver/expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	0.16%
Total annual fund operating expenses after fee waiver/expense reimbursement	rr_NetExpensesOverAssets	2.13%
1 Year	rr_ExpenseExampleYear01	$ 316
3 Years	rr_ExpenseExampleYear03	700
5 Years	rr_ExpenseExampleYear05	1,211
10 Years	rr_ExpenseExampleYear10	2,407
1 Year	rr_ExpenseExampleNoRedemptionYear01	216
3 Years	rr_ExpenseExampleNoRedemptionYear03	700
5 Years	rr_ExpenseExampleNoRedemptionYear05	1,211
10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 2,407
DWS Global Small Cap Fund | Class R6
Risk Return Abstract	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases, as % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load), as % of redemption proceeds	rr_MaximumDeferredSalesChargeOverOther	none	[1]
Account Maintenance Fee (annually, for fund account balances below $10,000 and subject to certain exceptions)	rr_MaximumAccountFee	none
Management fee	rr_ManagementFeesOverAssets	0.80%
Distribution/service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.24%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.04%
Fee waiver/expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none
Total annual fund operating expenses after fee waiver/expense reimbursement	rr_NetExpensesOverAssets	1.04%
1 Year	rr_ExpenseExampleYear01	$ 106
3 Years	rr_ExpenseExampleYear03	331
5 Years	rr_ExpenseExampleYear05	574
10 Years	rr_ExpenseExampleYear10	1,271
1 Year	rr_ExpenseExampleNoRedemptionYear01	106
3 Years	rr_ExpenseExampleNoRedemptionYear03	331
5 Years	rr_ExpenseExampleNoRedemptionYear05	574
10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 1,271
DWS Global Small Cap Fund | INST Class
Risk Return Abstract	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases, as % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load), as % of redemption proceeds	rr_MaximumDeferredSalesChargeOverOther	none	[1]
Account Maintenance Fee (annually, for fund account balances below $10,000 and subject to certain exceptions)	rr_MaximumAccountFee	none
Management fee	rr_ManagementFeesOverAssets	0.80%
Distribution/service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.35%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.15%
Fee waiver/expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	0.02%
Total annual fund operating expenses after fee waiver/expense reimbursement	rr_NetExpensesOverAssets	1.13%
1 Year	rr_ExpenseExampleYear01	$ 115
3 Years	rr_ExpenseExampleYear03	363
5 Years	rr_ExpenseExampleYear05	631
10 Years	rr_ExpenseExampleYear10	1,396
1 Year	rr_ExpenseExampleNoRedemptionYear01	115
3 Years	rr_ExpenseExampleNoRedemptionYear03	363
5 Years	rr_ExpenseExampleNoRedemptionYear05	631
10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 1,396
DWS Global Small Cap Fund | Class S
Risk Return Abstract	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases, as % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load), as % of redemption proceeds	rr_MaximumDeferredSalesChargeOverOther	none	[1]
Account Maintenance Fee (annually, for fund account balances below $10,000 and subject to certain exceptions)	rr_MaximumAccountFee	$ 20
Management fee	rr_ManagementFeesOverAssets	0.80%
Distribution/service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.33%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.13%
Fee waiver/expense reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none
Total annual fund operating expenses after fee waiver/expense reimbursement	rr_NetExpensesOverAssets	1.13%
1 Year	rr_ExpenseExampleYear01	$ 115
3 Years	rr_ExpenseExampleYear03	359
5 Years	rr_ExpenseExampleYear05	622
10 Years	rr_ExpenseExampleYear10	1,375
1 Year	rr_ExpenseExampleNoRedemptionYear01	115
3 Years	rr_ExpenseExampleNoRedemptionYear03	359
5 Years	rr_ExpenseExampleNoRedemptionYear05	622
10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 1,375
DWS Global Small Cap Fund | before tax | Class A
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	8.08%
5 Years	rr_AverageAnnualReturnYear05	7.48%
10 Years	rr_AverageAnnualReturnYear10	7.97%
Class Inception	rr_AverageAnnualReturnInceptionDate	Apr. 16, 1998
DWS Global Small Cap Fund | before tax | Class T
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	11.79%
5 Years	rr_AverageAnnualReturnYear05	8.22%
10 Years	rr_AverageAnnualReturnYear10	8.35%
Class Inception	rr_AverageAnnualReturnInceptionDate	Jun. 05, 2017
DWS Global Small Cap Fund | before tax | Class C
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	13.82%
5 Years	rr_AverageAnnualReturnYear05	7.94%
10 Years	rr_AverageAnnualReturnYear10	7.80%
Class Inception	rr_AverageAnnualReturnInceptionDate	Apr. 16, 1998
DWS Global Small Cap Fund | before tax | Class R6
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	15.03%
5 Years	rr_AverageAnnualReturnYear05	9.13%
Since Inception	rr_AverageAnnualReturnSinceInception	5.84%
Class Inception	rr_AverageAnnualReturnInceptionDate	Aug. 25, 2014
DWS Global Small Cap Fund | before tax | INST Class
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	14.97%
5 Years	rr_AverageAnnualReturnYear05	9.07%
10 Years	rr_AverageAnnualReturnYear10	8.94%
Class Inception	rr_AverageAnnualReturnInceptionDate	Aug. 26, 2008
DWS Global Small Cap Fund | before tax | Class S
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	14.95%
5 Years	rr_AverageAnnualReturnYear05	9.03%
10 Years	rr_AverageAnnualReturnYear10	8.89%
Class Inception	rr_AverageAnnualReturnInceptionDate	Sep. 10, 1991
DWS Global Small Cap Fund | After tax on distributions | Class A
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.89%
5 Years	rr_AverageAnnualReturnYear05	5.14%
10 Years	rr_AverageAnnualReturnYear10	5.99%
DWS Global Small Cap Fund | After tax on distributions and sale of fund shares | Class A
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.98%
5 Years	rr_AverageAnnualReturnYear05	5.63%
10 Years	rr_AverageAnnualReturnYear10	6.26%
DWS Global Small Cap Fund | S&P Developed SmallCap Index (reflects no deduction for fees, expenses or taxes) | Class R6
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	15.18%
5 Years	rr_AverageAnnualReturnYear05	12.40%
Since Inception	rr_AverageAnnualReturnSinceInception	9.67%
DWS Global Small Cap Fund | S&P Developed SmallCap Index (reflects no deduction for fees, expenses or taxes) | Class S
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	15.18%
5 Years	rr_AverageAnnualReturnYear05	12.40%
10 Years	rr_AverageAnnualReturnYear10	12.42%

[1] Investments of $1,000,000 or more may be eligible to buy Class A shares without a sales charge (load), but may be subject to a contingent deferred sales charge of 1.00% if redeemed within 12 months of the original purchase date and 0.50% if redeemed within the following six months.