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Nuveen Global Infrastructure Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Nuveen Global Infrastructure Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The investment objective of the Fund is long-term growth of capital and income.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
The following tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund or in other Nuveen Mutual Funds. More information about these and other discounts, as well as eligibility requirements for each share class, is available from your financial advisor and in “How You Can Buy and Sell Shares” on page 50 of the Fund’s prospectus and “Purchase and Redemption of Fund Shares” on page S-73 of the Fund’s statement of additional information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in the appendix to the Fund’s prospectus entitled “Variations in Sales Charge Reductions and Waivers Available Through Certain Intermediaries.” 
The tables and examples below do not reflect any commissions that shareholders may be required to pay directly to their financial intermediaries when buying or selling Class I shares. 
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)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination July 31, 2023
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. During the most recent fiscal year, the Fund’s portfolio turnover rate was 128% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 128.00%
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock The contingent deferred sales charge on Class C shares applies only to redemptions within 12 months of purchase.
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 Fund or in other Nuveen Mutual Funds.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following 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 either redeem or do not redeem your shares at the end of a period. The example also assumes that your investment has a 5% return each year, that the Fund’s operating expenses remain the same and that the fee waivers currently in place are not
renewed beyond July 31, 2023. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
Under normal market conditions, the Fund invests at least 80% of the sum of its net assets and the amount of any borrowings for investment purposes in equity securities issued by U.S. and non-U.S. infrastructure-related companies. Infrastructure-related companies include companies involved in the ownership, development, construction, renovation, financing or operation of infrastructure assets, or that provide the services and raw materials necessary for the construction and maintenance of infrastructure assets. Infrastructure assets are the physical structures and networks upon which the operation, growth and development of a community depends, which include water, sewer, and energy utilities; transportation and communication networks; health care facilities, government accommodations, and other public service facilities; and shipping, timber, steel, alternative energy, and other resources and services necessary for the construction and maintenance of these physical structures and networks.
Equity securities in which the Fund invests include common and preferred securities, publicly-traded units of master limited partnerships (“MLPs”), and real estate investment trusts (“REITs”). The Fund may also invest in exchange-traded funds (“ETFs”) and other investment companies (“investment companies”). The Fund may invest in companies of any size, including small- and mid-capitalization companies.
In selecting securities, the Fund’s sub-adviser invests in companies that it believes meet one or more of the following criteria:
· Attractively valued relative to other companies in the same industry or market.
· Strong fundamentals, including consistent cash flows or growth and a sound balance sheet.
· Strong management teams.
· Long-term contracts to provide infrastructure-based services.  
· An identifiable catalyst that could increase the value of the company’s securities over the next one or two years.  
The Fund’s sub-adviser generally will sell a security if any of the following has occurred: 
· The security has hit its price target and the company is no longer attractively valued relative to other companies.  
· The company’s fundamentals have significantly deteriorated.  
· There has been a significant change in the company’s management team.  
· A catalyst that could decrease the value of the security has been identified, or a previously existing positive catalyst has disappeared.  
· A better alternative exists in the marketplace.  
The Fund’s investments include infrastructure-related securities of non-U.S. issuers. Under normal market conditions, the Fund will invest at least 40% of its net assets in securities of non-U.S. issuers and, in any case, will invest at least 30% of its net assets in such issuers. 
The Fund diversifies its investments among a number of different countries throughout the world. Up to 25% of the Fund’s total assets may be invested in equity securities of emerging market issuers. 
The Fund may utilize derivatives, including options, futures contracts, options on futures contracts, and forward foreign currency exchange contracts. The Fund may use these derivatives to manage market or business risk, enhance the Fund’s return, or hedge against adverse movements in currency exchange rates. 
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration Under normal market conditions, the Fund invests at least 80% of the sum of its net assets and the amount of any borrowings for investment purposes in equity securities issued by U.S. and non-U.S. infrastructure-related companies.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
The value of your investment in this Fund will change daily. You could lose money by investing in the Fund. 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 government agency. The principal risks of investing in the Fund listed below are presented alphabetically to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.
Active Management Risk—The Fund’s sub-adviser actively manages the Fund’s investments. Consequently, the Fund is subject to the risk that the investment techniques and risk analyses employed by the Fund’s sub-adviser may not produce the desired results. This could cause the Fund to lose value or its investment results to lag relevant benchmarks or other funds with similar objectives.
Currency Risk—Changes in currency exchange rates will affect the value of non-U.S. securities, the value of dividends and interest earned from such securities, gains and losses realized on the sale of such securities, and derivative transactions tied to such securities. A strong U.S. dollar relative to these other currencies will adversely affect the value of the Fund’s portfolio.
Cybersecurity Risk—Cybersecurity risk is the risk of an unauthorized breach and access to Fund assets, customer data (including private shareholder information), or proprietary information, or the risk of an incident occurring that causes the Fund, its investment adviser or sub-adviser, custodian, transfer agent, distributor or other service provider or a financial intermediary to suffer a data breach, data corruption or lose operational functionality. Successful cyber-attacks or other cyber-failures or events affecting the Fund or its service providers may adversely impact the Fund or its shareholders. Additionally, a cybersecurity breach could affect the issuers in which the Fund invests, which may cause the Fund’s investments to lose value.
Derivatives Risk—The use of derivatives involves additional risks and transaction costs which could leave the Fund in a worse position than if it had not used these instruments. Derivative instruments can be used to acquire or to transfer the risk and returns of a security or other asset without buying or selling the security or asset. These instruments may entail investment exposures that are greater than their cost would suggest. As a result, a small investment in derivatives can result in losses that greatly exceed the original investment. Derivatives can be highly volatile, illiquid and difficult to value. An over-the-counter derivative transaction between the Fund and a counterparty that is not cleared through a central counterparty also involves the risk that a loss may be sustained as a result of the failure of the counterparty to the contract to make required payments. The payment obligation for a cleared derivative transaction is guaranteed by a central counterparty, which exposes the Fund to the creditworthiness of the central counterparty.
Emerging Markets Risk—The risk of foreign investment often increases in countries with emerging markets. For example, these countries may have more unstable governments than developed countries and their economies may be based on only a few industries. Because their financial markets may be very small, prices of financial instruments in emerging market countries may be volatile and difficult to determine. Financial instruments of issuers in these countries may have lower overall liquidity than those of issuers in more developed countries. Financial and other reporting by companies and government entities also may be less reliable or difficult to obtain in emerging market countries. In addition, foreign investors such as the Fund are subject to a variety of special restrictions in many emerging market countries. Shareholder claims and regulatory actions that are available in the U.S. may be difficult or impossible to pursue in emerging market countries.
Equity Security Risk—Equity securities in the Fund’s portfolio may decline significantly in price over short or extended periods of time, and such declines may occur because of declines in the equity market as a whole, or because of declines in only a particular country, company, industry, or sector of the market.
ETF Risk—An ETF is subject to the risks of the underlying securities that it holds. In addition, for index-based ETFs, the performance of an ETF may diverge from the performance of such index (commonly known as tracking error). ETFs are subject to fees and expenses (like management fees and operating expenses) that do not apply to an index, and the Fund will indirectly bear its proportionate share of any such fees and expenses paid by the ETFs in which it invests. Moreover, ETF shares may trade at a premium or discount to their net asset value. As ETFs trade on an exchange, they are subject to the risks of any exchange-traded instrument, including: (i) an active trading market for its shares may not develop or be maintained, (ii) market makers or authorized participants may decide to reduce their role or step away from these activities in times of market stress, (iii) trading of its shares may be halted by the exchange, and (iv) its shares may be delisted from the exchange. 
Foreign Investment Risk—Non-U.S. issuers or U.S. issuers with significant non-U.S. operations may be subject to risks in addition to those of issuers located in or that principally operate in the United States as a result of, among other things, political, social and economic developments abroad and different legal, regulatory and tax environments. To the extent the Fund invests a significant portion of its assets in the securities of companies in a single country or region, it may be more susceptible to adverse conditions affecting that country or region.  
Frequent Trading Risk—The Fund's portfolio turnover rate may exceed 100%. Frequent trading of portfolio securities may produce capital gains, which are taxable to shareholders when distributed. Frequent trading may also increase the amount of commissions or mark-ups to broker-dealers that the Fund pays when it buys and sells securities, which may detract from the Fund’s performance. 
Infrastructure Sector Risk—Because the Fund invests significantly in infrastructure-related securities, the Fund has greater exposure to adverse economic, regulatory, political, legal and other changes affecting the issuers of such securities. Additionally, infrastructure-related entities may be subject to regulation by various governmental authorities and affected by government regulation of rates charged to consumers, service interruptions, environmental matters or the imposition of special tariffs and changes in tax law. Infrastructure companies may be focused in the energy, industrials and utilities sectors. At times, the performance of securities in these infrastructure sectors may lag the performance of other sectors or the broader market as a whole. A downturn in these sectors could have an adverse impact on the Fund. 
Market Risk—The market value of the Fund’s investments may go up or down, sometimes rapidly or unpredictably and for short or extended periods of time, due to the particular circumstances of individual issuers or due to general conditions impacting issuers more broadly. Global economies and financial markets have become highly interconnected, and thus economic, market or political conditions or events in one country or region might adversely impact the value of the Fund’s investments whether or not the Fund invests in such country or region. Events such as war, terrorism, natural and environmental disasters and the spread of infectious illnesses or other public health emergencies may have a severe negative impact on the global economy, could cause financial markets to experience extreme volatility and losses, and could result in the disruption of trading and the reduction of liquidity in many instruments. 
Master Limited Partnership Risk—An investment in an MLP exposes the Fund to the legal and tax risks associated with investing in partnerships. MLPs may have limited financial resources, their securities may be relatively illiquid, and they may be subject to more erratic price movements because of the underlying assets they hold. 
Other Investment Companies Risk—When the Fund invests in other investment companies, including ETFs, you bear both your proportionate share of Fund expenses and, indirectly, the expenses of the other investment companies. Furthermore, the Fund is exposed to the risks to which the other investment companies may be subject.  
Preferred Security Risk—Preferred securities generally are subordinated to bonds and other debt instruments in a company’s capital structure and therefore will be subject to greater credit risk than those debt instruments. In addition, preferred securities are subject to other risks, such as having no or limited voting rights, being subject to special redemption rights, having distributions deferred or skipped, having floating interest rates or dividends, which may result in a decline in value in a falling interest rate environment, having fixed interest rates or dividends, which may result in a decline in value in a rising interest rate environment, having limited liquidity, changing or unfavorable tax treatments and possibly being issued by companies in heavily regulated industries. 
Real Estate Investment Risk—The Fund's investments in the real estate market have many of the same risks as direct ownership of real estate. These risks include, among others: declines in the value of real estate; risks related to general and local economic conditions; possible lack of availability of mortgage funds or other limits to accessing the credit or capital markets; defaults by borrowers or tenants, particularly during an economic downturn; and changes in interest rates. The real estate sector is highly sensitive to general and local economic conditions and developments and is characterized by intense competition and periodic overbuilding. Real estate values have been subject to substantial fluctuations and declines on a local, regional and national basis in the past and may continue to be in the future. 
REITs Risk— In addition to the risks associated with investing in securities of real estate companies and real estate related companies, REITs are subject to certain additional risks. REITs may be affected by changes in real estate values, rents, property taxes and interest rates. Further, REITs are dependent upon specialized management skills and cash flows, and may have their investments in relatively few properties, or in a small geographic area or a single property type. Failure of a company to qualify as a REIT under federal tax law, or changes to federal tax law or regulations governing REITs, may have adverse consequences to the Fund. In addition, REITs have their own expenses, and the Fund will bear a proportionate share of those expenses. Many REITs utilize leverage (and some may be highly leveraged), which increases investment risk and could potentially magnify the Fund’s losses. 
Small- and Mid-Cap Company Risk—Even larger REITs may be small- to medium-sized companies in relation to the equity markets as a whole. Securities of small-cap companies involve substantial risk. Prices of small-cap securities may be subject to more abrupt or erratic movements, and to wider fluctuations, than security prices of larger, more established companies or broader market averages in general. It may be difficult to sell small-cap securities at the desired time and price. While mid-cap securities may be slightly less volatile than small-cap securities, they still involve similar risks. 
Risk Lose Money [Text] rr_RiskLoseMoney The value of your investment in this Fund will change daily. You could lose money by investing in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution 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 government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The following bar chart and table provide some indication of the potential risks of investing in the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available at www.nuveen.com/performance or by calling (800) 257-8787.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart below shows the variability of the Fund’s performance from year to year for Class A shares.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone (800) 257-8787
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.nuveen.com/performance
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading   Class A Annual Total Return*
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock
The bar chart below shows the variability of the Fund’s performance from year to year for Class A shares. The bar chart and highest/lowest quarterly returns that follow do not reflect sales charges, and if these charges were reflected, the returns would be less than those shown.
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads The bar chart and highest/lowest quarterly returns that follow do not reflect sales charges, and if these charges were reflected, the returns would be less than those shown.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
During the ten-year period ended December 31, 2021, the Fund’s highest and lowest quarterly returns were 14.66%
and -22.81%, respectively, for the quarters ended March 31, 2019 and March 31, 2020. 
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returnsfor the Periods EndedDecember 31, 2021
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate All after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred After-tax returns are not relevant to investors who hold Fund shares in tax-deferred accounts such as IRAs or employer-sponsored retirement plans. 
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown for Class A shares only; after-tax returns for other share classes will vary.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
The table below shows the variability of the Fund’s average annual returns and how they compare over the time periods indicated with those of a broad measure of market performance and an index of funds with similar investment objectives. All after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown for Class A shares only; after-tax returns for other share classes will vary. Your own actual after-tax returns will depend on your specific tax situation and may differ from what is shown here. After-tax returns are not relevant to investors who hold Fund shares in tax-deferred accounts such as IRAs or employer-sponsored retirement plans. 
Both the bar chart and the table assume that all distributions have been reinvested. Performance reflects fee waivers, if any, in effect during the periods presented. If any such waivers had not been in place, returns would have been reduced. 
Nuveen Global Infrastructure 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 the lesser of purchase price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none [1]
Maximum Sales Charge (Load) Imposed on Reinvested Dividends rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Exchange Fee rr_ExchangeFeeOverRedemption none
Annual Low Balance Account Fee (for accounts under $1,000) rr_MaximumAccountFee $ 15 [2]
Management Fees rr_ManagementFeesOverAssets 0.89%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.18%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.32%
Fee Waivers and/or Expense Reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.11%) [3]
Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements rr_NetExpensesOverAssets 1.21%
1 Year rr_ExpenseExampleYear01 $ 691
3 Years rr_ExpenseExampleYear03 956
5 Years rr_ExpenseExampleYear05 1,244
10 Years rr_ExpenseExampleYear10 2,062
1 Year rr_ExpenseExampleNoRedemptionYear01 691
3 Years rr_ExpenseExampleNoRedemptionYear03 956
5 Years rr_ExpenseExampleNoRedemptionYear05 1,244
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,062
2012 rr_AnnualReturn2012 15.52% [4]
2013 rr_AnnualReturn2013 14.73% [4]
2014 rr_AnnualReturn2014 14.11% [4]
2015 rr_AnnualReturn2015 (6.89%) [4]
2016 rr_AnnualReturn2016 7.61% [4]
2017 rr_AnnualReturn2017 19.38% [4]
2018 rr_AnnualReturn2018 (7.88%) [4]
2019 rr_AnnualReturn2019 29.27% [4]
2020 rr_AnnualReturn2020 (2.76%) [4]
2021 rr_AnnualReturn2021 14.44% [4]
Year to Date Return, Label rr_YearToDateReturnLabel year-to-date total return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2022
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 2.82%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Mar. 31, 2019
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 14.66%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (22.81%)
1 Year rr_AverageAnnualReturnYear01 7.85%
5 Years rr_AverageAnnualReturnYear05 8.32%
10 Years rr_AverageAnnualReturnYear10 8.50%
Since Inception rr_AverageAnnualReturnSinceInception
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 17, 2007
Nuveen Global Infrastructure 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 the lesser of purchase price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00% [1]
Maximum Sales Charge (Load) Imposed on Reinvested Dividends rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Exchange Fee rr_ExchangeFeeOverRedemption none
Annual Low Balance Account Fee (for accounts under $1,000) rr_MaximumAccountFee $ 15 [2]
Management Fees rr_ManagementFeesOverAssets 0.89%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.18%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.07%
Fee Waivers and/or Expense Reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.11%) [3]
Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements rr_NetExpensesOverAssets 1.96%
1 Year rr_ExpenseExampleYear01 $ 199
3 Years rr_ExpenseExampleYear03 635
5 Years rr_ExpenseExampleYear05 1,101
10 Years rr_ExpenseExampleYear10 2,389
1 Year rr_ExpenseExampleNoRedemptionYear01 199
3 Years rr_ExpenseExampleNoRedemptionYear03 635
5 Years rr_ExpenseExampleNoRedemptionYear05 1,101
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,389
1 Year rr_AverageAnnualReturnYear01 13.58%
5 Years rr_AverageAnnualReturnYear05 8.79%
10 Years rr_AverageAnnualReturnYear10 8.49%
Since Inception rr_AverageAnnualReturnSinceInception
Inception Date rr_AverageAnnualReturnInceptionDate Nov. 03, 2008
Nuveen Global Infrastructure Fund | Class R6  
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 the lesser of purchase price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none [1]
Maximum Sales Charge (Load) Imposed on Reinvested Dividends rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Exchange Fee rr_ExchangeFeeOverRedemption none
Annual Low Balance Account Fee (for accounts under $1,000) rr_MaximumAccountFee none [2]
Management Fees rr_ManagementFeesOverAssets 0.89%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.10%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.99%
Fee Waivers and/or Expense Reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.11%) [3]
Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements rr_NetExpensesOverAssets 0.88%
1 Year rr_ExpenseExampleYear01 $ 90
3 Years rr_ExpenseExampleYear03 301
5 Years rr_ExpenseExampleYear05 534
10 Years rr_ExpenseExampleYear10 1,200
1 Year rr_ExpenseExampleNoRedemptionYear01 90
3 Years rr_ExpenseExampleNoRedemptionYear03 301
5 Years rr_ExpenseExampleNoRedemptionYear05 534
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,200
1 Year rr_AverageAnnualReturnYear01 14.84%
5 Years rr_AverageAnnualReturnYear05 10.02%
10 Years rr_AverageAnnualReturnYear10
Since Inception rr_AverageAnnualReturnSinceInception 8.03%
Inception Date rr_AverageAnnualReturnInceptionDate Jun. 30, 2016
Nuveen Global Infrastructure Fund | Class I  
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 the lesser of purchase price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none [1]
Maximum Sales Charge (Load) Imposed on Reinvested Dividends rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Exchange Fee rr_ExchangeFeeOverRedemption none
Annual Low Balance Account Fee (for accounts under $1,000) rr_MaximumAccountFee $ 15 [2]
Management Fees rr_ManagementFeesOverAssets 0.89%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.18%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.07%
Fee Waivers and/or Expense Reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.11%) [3]
Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements rr_NetExpensesOverAssets 0.96%
1 Year rr_ExpenseExampleYear01 $ 98
3 Years rr_ExpenseExampleYear03 327
5 Years rr_ExpenseExampleYear05 577
10 Years rr_ExpenseExampleYear10 1,293
1 Year rr_ExpenseExampleNoRedemptionYear01 98
3 Years rr_ExpenseExampleNoRedemptionYear03 327
5 Years rr_ExpenseExampleNoRedemptionYear05 577
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,293
1 Year rr_AverageAnnualReturnYear01 14.78%
5 Years rr_AverageAnnualReturnYear05 9.88%
10 Years rr_AverageAnnualReturnYear10 9.42%
Since Inception rr_AverageAnnualReturnSinceInception
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 17, 2007
Nuveen Global Infrastructure Fund | (return after taxes on distributions) | Class A  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 5.73%
5 Years rr_AverageAnnualReturnYear05 6.78%
10 Years rr_AverageAnnualReturnYear10 6.80%
Since Inception rr_AverageAnnualReturnSinceInception
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 17, 2007
Nuveen Global Infrastructure Fund | (return after taxes on distributions and sale of Fund shares) | Class A  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 5.53%
5 Years rr_AverageAnnualReturnYear05 6.21%
10 Years rr_AverageAnnualReturnYear10 6.34%
Since Inception rr_AverageAnnualReturnSinceInception
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 17, 2007
Nuveen Global Infrastructure Fund | S&P Global Infrastructure Index (Net Return) (reflects reinvested dividends net of withholding taxes but reflects no deduction for fees, expenses or other taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 11.04% [5]
5 Years rr_AverageAnnualReturnYear05 6.86% [5]
10 Years rr_AverageAnnualReturnYear10 6.81% [5]
Nuveen Global Infrastructure Fund | S&P Global Infrastructure Index (Net Return) (reflects reinvested dividends net of withholding taxes but reflects no deduction for fees, expenses or other taxes) | Class R6  
Risk/Return: rr_RiskReturnAbstract  
Since Inception rr_AverageAnnualReturnSinceInception 5.86% [5]
Nuveen Global Infrastructure Fund | Lipper Global Infrastructure Funds Category Average (reflects no deduction for taxes or sales loads)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 14.15% [6]
5 Years rr_AverageAnnualReturnYear05 9.39% [6]
10 Years rr_AverageAnnualReturnYear10 8.75% [6]
Nuveen Global Infrastructure Fund | Lipper Global Infrastructure Funds Category Average (reflects no deduction for taxes or sales loads) | Class R6  
Risk/Return: rr_RiskReturnAbstract  
Since Inception rr_AverageAnnualReturnSinceInception 7.68% [6]
[1] The contingent deferred sales charge on Class C shares applies only to redemptions within 12 months of purchase.
[2] Fee applies to the following types of accounts under $1,000 held directly with the Fund: individual retirement accounts (IRAs), Coverdell Education Savings Accounts and accounts established pursuant to the Uniform Transfers to Minors Act (UTMA) or Uniform Gifts to Minors Act (UGMA).
[3] The Fund’s investment adviser has agreed to waive fees and/or reimburse expenses through July 31, 2023 so that the total annual operating expenses of the Fund (excluding 12b-1 distribution and/or service fees, interest expenses, taxes, acquired fund fees and expenses, fees incurred in acquiring and disposing of portfolio securities and extraordinary expenses) do not exceed 1.00% of the average daily net assets of any class of Fund shares. However, because Class R6 shares are not subject to sub-transfer agent and similar fees, the total annual operating expenses for the Class R6 shares will be less than the expense limitation. This expense limitation may be terminated or modified prior to July 31, 2023 only with the approval of the Board of Directors of the Fund.
[4] Class A year-to-date total return as of March 31, 2022 was 2.82%. The performance of the other share classes will differ due to their different expense structures. 
[5]
An index that provides liquid and tradable exposure to 75 companies from around the world that represent the listed infrastructure universe. To create diversified exposure across the global listed infrastructure market, the index has balanced weights across three distinct infrastructure clusters: utilities, transportation, and energy.
[6]
Represents the average annualized total return for all reporting funds in the Lipper Global Infrastructure Funds Category.