v3.26.1
Label Element Value
Nuveen Mid Cap Value Fund  
Risk/Return: oef_RiskReturnAbstract  
Risk/Return [Heading] oef_RiskReturnHeading Nuveen Mid Cap Value Fund
Objective [Heading] oef_ObjectiveHeading Investment objective
Objective, Primary [Text Block] oef_ObjectivePrimaryTextBlock

The Fund seeks a favorable long-term total return, mainly through capital appreciation, primarily from equity securities of medium-sized domestic companies.

Expense Heading [Optional Text] oef_ExpenseHeading Fees and expenses
Expense Narrative [Text Block] oef_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 pay other fees, such as brokerage commissions and other fees to financial intermediaries, when buying or selling shares of the Fund, which are not reflected in the tables and examples below. 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 119 of the Fund’s Prospectus and “Purchase and Redemption of Fund Shares” on page 106 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.”
Shareholder Fees Caption [Optional Text] oef_ShareholderFeesCaption SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Optional Text] oef_OperatingExpensesCaption ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] oef_PortfolioTurnoverHeading Portfolio turnover
Portfolio Turnover [Text Block] oef_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, as applicable, 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 fiscal year ended October 31, 2025, the Fund’s portfolio turnover rate was 28% of the average value of its portfolio.
Portfolio Turnover, Rate oef_PortfolioTurnoverRate 28.00%
Expense Example [Heading] oef_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] oef_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in shares of 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 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, before fee waivers and/or expense reimbursements, remain the same. The example assumes that the Fund’s fee waiver and/or expense reimbursement arrangements will each remain in place for the duration noted in the table above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading] oef_StrategyHeading Principal investment strategies
Strategy Narrative [Text Block] oef_StrategyNarrativeTextBlock

Under normal circumstances, 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 of mid-capitalization value companies. The Fund will invest primarily in equity securities of medium-sized domestic companies, as defined by the Fund’s benchmark index, the Russell Midcap® Value Index, that the Fund’s sub-adviser, Nuveen Asset Management, LLC (“Nuveen Asset Management”), believes appear undervalued by the market based on an evaluation of their potential worth. Mid-capitalization companies are those that have market capitalizations within the range of the companies in the Russell Midcap® Index. The market capitalization range is determined based on the companies in the index as of the last business day of the month in which the index was most recently reconstituted and may be updated to reflect any changes to the index composition and the market capitalization of companies in the index. Value companies are those that are constituents of at least one of the following indexes on the last business day of the month in which its most recent reconstitution was completed (as adjusted by changes to an index between reconstitutions): Russell 3000 Value Index, S&P Composite 1500®Value Index, MSCI World IMI Value Index.

Nuveen Asset Management uses a variety of comparative valuation criteria to determine whether shares of a particular company might be undervalued, including analyses of historical valuations of the same security; valuations of comparable securities in the same sector or the overall market; various financial ratios such as stock price-to-earnings, stock price-to-book value, free cash flow, debt-to-capital and, to a lesser extent, dividend yield.

The Fund may invest up to 20% of its assets in foreign investments. The Fund may also purchase and sell futures, options, swaps and other equity derivatives to carry out the Fund’s investment strategies.
Bar Chart and Performance Table [Heading] oef_BarChartAndPerformanceTableHeading Past performance
Performance Narrative [Text Block] oef_PerformanceNarrativeTextBlock

The following chart and table help illustrate some of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year. The bar chart shows the annual total returns of Class R6 of the Fund, before taxes, in each full calendar year for the last ten years. Because the expenses vary across share classes, the performance of Class R6 may vary from the other share classes. Below the bar chart are the best and worst returns of Class R6 for a calendar quarter during the full calendar-year periods covered by the bar chart. The performance table following the bar chart shows the Fund’s average annual total returns for Class R6, Class I, Premier Class, Retirement Class and Class A over the applicable one-year, five-year, ten-year and since-inception periods ended December 31, 2025, and how those returns compare to those of the Fund’s broad-based securities market index and benchmark index. For periods prior to

August 1, 2026, Teachers Advisors, LLC (“Advisors”) served as investment adviser to the Fund. After-tax performance is shown only for Class R6 shares, and after-tax returns for the other classes of shares will vary from the after-tax returns presented for Class R6 shares.

The returns shown below reflect previous agreements by Advisors, the Fund’s prior investment adviser, to waive, reimburse and/or compensate the Fund for certain fees, expenses and/or costs. Without these reductions and/or compensation, the returns of the Fund would have been lower. Past performance of the Fund (before and after taxes) is not necessarily an indication of how it will perform in the future. The broad-based securities market index and benchmark index listed below are unmanaged, and you cannot invest directly in an index. The returns for the broad-based securities market index and benchmark index reflect no deduction for fees, expenses or taxes.

For current performance information of each share class, including performance to the most recent month-end, please visit www.nuveen.com/performance or call 800-257-8787.
Performance Information Illustrates Variability of Returns [Text] oef_PerformanceInformationIllustratesVariabilityOfReturns The following chart and table help illustrate some of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year.
Performance Availability Website Address [Text] oef_PerformanceAvailabilityWebSiteAddress www.nuveen.com/performance
Performance Past Does Not Indicate Future [Text] oef_PerformancePastDoesNotIndicateFuture Past performance of the Fund (before and after taxes) is not necessarily an indication of how it will perform in the future.
Bar Chart [Heading] oef_BarChartHeading ANNUAL TOTAL RETURNS FOR CLASS R6 SHARES (%)Nuveen Mid Cap Value Fund
Bar Chart Closing [Text Block] oef_BarChartClosingTextBlock

Best quarter: 21.51%, for the quarter ended December 31, 2020. Worst quarter: -34.38%, for the quarter ended March 31, 2020.
Performance Table Heading oef_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS For the Periods Ended December 31, 2025 †
Index No Deduction for Fees, Expenses, or Taxes [Text] oef_IndexNoDeductionForFeesExpensesTaxes (reflects no deductions for fees, expenses or taxes)
Performance Table Uses Highest Federal Rate oef_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates in effect during the periods shown and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred oef_PerformanceTableNotRelevantToTaxDeferred The after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(a), 401(k) or 403(b) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text] oef_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown for only one class, and after-tax returns for other classes will vary.
Performance Table Closing [Text Block] oef_PerformanceTableClosingTextBlock Current performance of the Fund’s shares may be higher or lower than that shown above.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates in effect during the periods shown and do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. The after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(a), 401(k) or 403(b) plans or Individual Retirement Accounts (IRAs). After-tax returns are shown for only one class, and after-tax returns for other classes will vary.
Nuveen Mid Cap Value Fund | Principal investment risks  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Principal investment risks

You could lose money over short or long periods by investing in this Fund. An investment in the Fund, due to the nature of the Fund’s portfolio holdings, typically is subject to the following principal investment risks:
Nuveen Mid Cap Value Fund | Risk Lose Money [Member]  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock You could lose money over short or long periods by investing in this Fund.
Nuveen Mid Cap Value Fund | Market Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

· Market Risk—The risk that market prices of portfolio investments held by the Fund may fluctuate rapidly or unpredictably due to a variety of factors, including responses to government actions or interventions, or changing economic, political or market conditions. Market risk may affect a single issuer, industry or sector of the economy, or it may affect the market as a whole. Such conditions may add significantly to the risk of volatility in the net asset value (“NAV”) of the Fund’s shares and adversely affect the Fund and its investments. From time to time, the Fund may invest a significant portion

of its assets in companies in one or more related sectors or industries, which would make the Fund more vulnerable to adverse developments affecting such sectors or industries.

Nuveen Mid Cap Value Fund | Issuer Risk (often called Financial Risk)  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

· Issuer Risk (often called Financial Risk)—The risk that an issuer’s earnings prospects, credit rating and overall financial position will deteriorate, causing a decline in the value of the issuer’s financial instruments over short or extended periods of time.

Nuveen Mid Cap Value Fund | Mid-Cap Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

· Mid-Cap Risk—The risk that the stocks of mid-capitalization companies often experience greater price volatility, lower trading volume and lower overall liquidity than the stocks of larger, more established companies.
Nuveen Mid Cap Value Fund | Small-Cap Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

· Small-Cap Risk—The risk that the stocks of small-capitalization companies often experience greater price volatility than large- or mid-sized companies because small-cap companies are often newer or less established than larger companies and are likely to have more limited resources, products and markets. Securities of small-cap companies often have lower overall liquidity than securities of larger companies as a result of there being a smaller market for their securities, which can have an adverse effect on the pricing of these securities and on the ability to sell these securities when Nuveen Asset Management deems it appropriate.

Nuveen Mid Cap Value Fund | Style Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

· Style Risk—The risk that use of a particular investing style (such as growth or value investing) may fall out of favor in the marketplace for various periods of time and result in underperformance relative to the broader market sector or significant declines in the value of the Fund’s portfolio investments.

Nuveen Mid Cap Value Fund | Risks of Value Investing  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

· Risks of Value Investing—Securities believed to be undervalued are subject to the risks that the issuer’s potential business prospects are not realized, its potential value is never recognized by the market or the securities were appropriately priced when acquired. As a result, value stocks can be overpriced when acquired and may not perform as anticipated.
Nuveen Mid Cap Value Fund | Active Management Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

· Active Management Risk—The risk that Nuveen Asset Management’s strategy, investment selection or trading execution may cause the Fund to underperform relative to the benchmark index or mutual funds with similar investment objectives and/or strategies and may not produce the desired results or expected returns.
Nuveen Mid Cap Value Fund | Foreign Investment Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

· Foreign Investment Risk—Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, currency, market or economic developments as well as armed conflicts and can result in greater price volatility and perform differently from financial instruments of U.S. issuers. This risk may be heightened in emerging or developing markets. Foreign investments may also have lower liquidity and be more difficult to value than investments in U.S. issuers. Foreign investments may also be subject to risk of loss because of more or less

foreign government regulation, less public information, less stringent investor protections and less stringent accounting, corporate governance, financial reporting and disclosure standards. Changes in the value of foreign currencies may make the return on an investment increase or decrease, unrelated to the quality or performance of the investment itself. The imposition of sanctions, exchange controls (including repatriation restrictions), confiscations, trade restrictions (including tariffs) and other restrictions by the United States or other governments may also negatively impact the Fund’s investments. Economic sanctions and other similar governmental actions or developments could, among other things, effectively restrict or eliminate the Fund’s ability to purchase or sell certain foreign securities or groups of foreign securities, and/or thus may make the Fund’s investments in such securities less liquid (or illiquid) or more difficult to value. The type and severity of sanctions and other measures that may be imposed could vary broadly in scope, and their impact is impossible to predict.
Nuveen Mid Cap Value Fund | Derivatives Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

· Derivatives Risk—The risks associated with investing in derivatives, including futures, options, swaps, and other equity derivative instruments, and other similar instruments (referred to collectively as “derivatives”) may be different and greater than the risks associated with directly investing in the underlying securities and other instruments, and include leverage risk, market risk, counterparty risk, liquidity risk, operational risk and legal risk. The Fund may use more complex derivatives that might be particularly susceptible to liquidity, credit and counterparty risk. When investing in derivatives, the Fund may lose more than the principal amount invested. Derivatives used for hedging or risk management may not operate as intended, may expose the Fund to other risks, and may be insufficient to protect the Fund from the risks they were intended to hedge.
Nuveen Mid Cap Value Fund | Russell 3000® Index  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Russell 3000® Index
Average Annual Return, Percent oef_AvgAnnlRtrPct 17.15%
Average Annual Return, Percent oef_AvgAnnlRtrPct 13.15%
Average Annual Return, Percent oef_AvgAnnlRtrPct 14.29%
Nuveen Mid Cap Value Fund | Russell Midcap® Value Index  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Russell Midcap® Value Index
Average Annual Return, Percent oef_AvgAnnlRtrPct 11.05%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.83%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.78%
Nuveen Mid Cap Value Fund | Class A  
Risk/Return: oef_RiskReturnAbstract  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Shareholder Fee, Other oef_ShareholderFeeOther $ 15.00
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.44%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.11% [1]
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.80%
Fee Waiver or Reimbursement oef_FeeWaiverOrReimbursementOverAssets 0.00% [2]
Net Expenses (as a percentage of Assets) oef_NetExpensesOverAssets 0.80%
Fee Waiver or Reimbursement over Assets, Date of Termination oef_FeeWaiverOrReimbursementOverAssetsDateOfTermination February 28, 2027
Expenses Restated to Reflect Current [Text] oef_ExpensesRestatedToReflectCurrent Restated to reflect estimate for the current fiscal year.
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 652
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 816
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 994
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,508
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.53% [3]
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.12% [3]
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.58% [3]
Nuveen Mid Cap Value Fund | Class I  
Risk/Return: oef_RiskReturnAbstract  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Shareholder Fee, Other oef_ShareholderFeeOther $ 0
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.44%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.11% [1]
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.55%
Fee Waiver or Reimbursement oef_FeeWaiverOrReimbursementOverAssets 0.00% [2]
Net Expenses (as a percentage of Assets) oef_NetExpensesOverAssets 0.55%
Fee Waiver or Reimbursement over Assets, Date of Termination oef_FeeWaiverOrReimbursementOverAssetsDateOfTermination February 28, 2027
Expenses Restated to Reflect Current [Text] oef_ExpensesRestatedToReflectCurrent Restated to reflect estimate for the current fiscal year.
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 56
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 176
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 307
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 689
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.11%
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.64%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.45%
Nuveen Mid Cap Value Fund | Premier Class  
Risk/Return: oef_RiskReturnAbstract  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Shareholder Fee, Other oef_ShareholderFeeOther $ 0
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.44%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.15%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.02%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.61%
Fee Waiver or Reimbursement oef_FeeWaiverOrReimbursementOverAssets 0.00% [2]
Net Expenses (as a percentage of Assets) oef_NetExpensesOverAssets 0.61%
Fee Waiver or Reimbursement over Assets, Date of Termination oef_FeeWaiverOrReimbursementOverAssetsDateOfTermination February 28, 2027
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 62
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 195
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 340
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 762
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.11%
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.58%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.38%
Nuveen Mid Cap Value Fund | Class R6  
Risk/Return: oef_RiskReturnAbstract  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Shareholder Fee, Other oef_ShareholderFeeOther $ 0
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.44%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.02%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.46%
Fee Waiver or Reimbursement oef_FeeWaiverOrReimbursementOverAssets 0.00% [2]
Net Expenses (as a percentage of Assets) oef_NetExpensesOverAssets 0.46%
Fee Waiver or Reimbursement over Assets, Date of Termination oef_FeeWaiverOrReimbursementOverAssetsDateOfTermination February 28, 2027
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 47
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 148
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 258
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 579
Highest Quarterly Return, Label [Optional Text] oef_HighestQuarterlyReturnLabel Best quarter
Highest Quarterly Return, Date oef_BarChartHighestQuarterlyReturnDate Dec. 31, 2020
Highest Quarterly Return oef_BarChartHighestQuarterlyReturn 21.51%
Lowest Quarterly Return, Label [Optional Text] oef_LowestQuarterlyReturnLabel Worst quarter
Lowest Quarterly Return, Date oef_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return oef_BarChartLowestQuarterlyReturn (34.38%)
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.22%
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.75%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.55%
Annual Return [Percent] oef_AnnlRtrPct 17.40%
Annual Return [Percent] oef_AnnlRtrPct 11.13%
Annual Return [Percent] oef_AnnlRtrPct (14.15%)
Annual Return [Percent] oef_AnnlRtrPct 27.05%
Annual Return [Percent] oef_AnnlRtrPct (4.19%)
Annual Return [Percent] oef_AnnlRtrPct 32.18%
Annual Return [Percent] oef_AnnlRtrPct (10.34%)
Annual Return [Percent] oef_AnnlRtrPct 11.39%
Annual Return [Percent] oef_AnnlRtrPct 14.49%
Annual Return [Percent] oef_AnnlRtrPct 10.22%
Nuveen Mid Cap Value Fund | Class R6 | After Taxes on Distributions  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.91%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.26%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.09%
Nuveen Mid Cap Value Fund | Class R6 | After Taxes on Distributions and Sales  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.16%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.97%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.26%
Nuveen Mid Cap Value Fund | Retirement Class  
Risk/Return: oef_RiskReturnAbstract  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Shareholder Fee, Other oef_ShareholderFeeOther $ 0
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.44%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.27%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.71%
Fee Waiver or Reimbursement oef_FeeWaiverOrReimbursementOverAssets 0.00% [2]
Net Expenses (as a percentage of Assets) oef_NetExpensesOverAssets 0.71%
Fee Waiver or Reimbursement over Assets, Date of Termination oef_FeeWaiverOrReimbursementOverAssetsDateOfTermination February 28, 2027
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 73
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 227
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 395
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 883
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.98%
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.48%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.28%
[1]

Restated to reflect estimate for the current fiscal year.
[2]

Under the Fund’s expense reimbursement arrangements, the Fund’s investment adviser, Nuveen Fund Advisors, LLC (“Nuveen Fund Advisors”), has contractually agreed to reimburse the Fund for any Total annual Fund operating expenses (excluding interest, taxes, brokerage commissions or other transactional expenses, Acquired fund fees and expenses and extraordinary expenses) that exceed: (i) 0.90% of average daily net assets for Class A shares; (ii) 0.70% of average daily net assets for Class I shares; (iii) 0.70% of average daily net assets for Premier Class shares; (iv) 0.55% of average daily net assets for Class R6 shares; and (v) 0.80% of average daily net assets for Retirement Class shares of the Fund. These expense reimbursement arrangements will continue through at least February 28, 2027, unless changed with approval of the Board of Trustees.
[3]

The Class A average annual total returns have been restated to reflect a maximum up-front sales charge of 5.75% applicable to the purchase of Class A shares, which was effective as of May 6, 2024.