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Nuveen Large Cap Value Index Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Nuveen Large Cap Value Index Fund
Objective [Heading] rr_ObjectiveHeading Investment objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Fund seeks a favorable long-term total return, mainly through capital appreciation, by investing primarily in a portfolio of equity securities of large domestic value companies based on a market index.

Expense [Heading] rr_ExpenseHeading Fees and expenses
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 95 of the Fund’s Prospectus and “Purchase and Redemption of Fund Shares” on page 104 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)
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 fiscal year ended October 31, 2023, the Fund’s portfolio turnover rate was 26% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 26.00%
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in 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 durations noted in the table above. 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 circumstances, the Fund invests at least 80% of its assets in securities of its benchmark index, the Russell 1000® Value Index. For purposes of the 80% investment policy, “large-cap” securities are securities of issuers with a capitalization equal to or greater than the top 80% of issuers by capitalization within the Russell 1000® Index at the time of purchase. The Russell 1000 Value Index is a subset of the Russell 1000 Index, which represents the performance of the large-cap value segment of the U.S. equity universe. It includes those Russell 1000 Index companies with lower relative price-to-book ratios and lower expected growth values. The Fund buys most, but not necessarily all, of the stocks in its benchmark index, and will attempt to closely match the overall investment characteristics of its benchmark index. For purposes of the 80% investment policy, the term “assets” means net assets, plus the amount of any borrowings for investment purposes.

The Fund is designed to track various U.S. equity markets as a whole or a segment of these markets. The Fund primarily invests its assets in equity securities its investment adviser, Teachers Advisors, LLC (“Advisors”), has selected to track a designated stock market index. Because the return of an index is not reduced by investment and other operating expenses, the Fund’s ability to match the returns of the Russell 1000 Value Index is negatively affected by the costs of buying and selling securities as well as the Fund’s fees and other expenses. The use of a particular index by the Fund is not a fundamental policy and may be changed without shareholder approval. The portfolio management team of Advisors will attempt to build a portfolio that generally matches the market weighted investment characteristics of the Fund’s benchmark index.

The Fund is classified as a diversified investment company, as defined under the Investment Company Act of 1940, as amended (the “1940 Act”). However,

the Fund may become non-diversified under the 1940 Act without the approval of Fund shareholders solely as a result of a change in relative market capitalization or index weighting of one or more constituents of its benchmark index, the Russell 1000 Value Index, which the Fund seeks to track.

Risk [Heading] rr_RiskHeading Principal investment risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Past performance
Performance Narrative [Text Block] rr_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 and Retirement classes over the applicable one-year, five-year, ten-year and since-inception periods ended December 31, 2023, and how those returns compare to those of the Fund’s benchmark index. Performance information is not included for Class W as it is not currently operational. 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 to waive or reimburse the Fund for certain fees and expenses. Without these waivers and reimbursements, 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 benchmark index listed below is unmanaged, and you cannot invest directly in an index. The returns for the 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 by calling 800-257-8787.
Performance Information Illustrates Variability of Returns [Text] rr_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] rr_PerformanceAvailabilityWebSiteAddress www.nuveen.com/performance
Performance Past Does Not Indicate Future [Text] rr_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] rr_BarChartHeading ANNUAL TOTAL RETURNS FOR CLASS R6 SHARES (%)Nuveen Large Cap Value Index Fund
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best quarter: 16.25%, for the quarter ended December 31, 2020. Worst quarter: -26.61%, for the quarter ended March 31, 2020.
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS For the Periods Ended December 31, 2023
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes The returns for the benchmark index reflect no deduction for fees, expenses or taxes.
Performance Table Uses Highest Federal Rate rr_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 rr_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] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown for only one class, and after-tax returns for other classes will vary.
Performance Table Closing [Text Block] rr_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 Large Cap Value Index Fund | Risk Lose Money [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock You could lose money over short or long periods by investing in this Fund.
Nuveen Large Cap Value Index Fund | Market Risk  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

· Market Risk—The risk that market prices of portfolio investments held by the Fund may fall rapidly or unpredictably due to a variety of factors, including 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. The Fund currently invests a significant portion of its assets in companies in the financials sector, although this may change over time.
Nuveen Large Cap Value Index Fund | Index Risk  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

· Index Risk—The risk that the Fund’s performance may not correspond to its benchmark index for any period of time and may underperform such index or the overall financial market. Additionally, to the extent that the Fund’s investments vary from the composition of its benchmark index, the Fund’s performance could potentially vary from the index’s performance to a greater extent than if the Fund merely attempted to replicate the index.
Nuveen Large Cap Value Index Fund | Issuer Risk (often called Financial Risk)  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_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 Large Cap Value Index Fund | Style Risk  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_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 Large Cap Value Index Fund | Risks of Value Investing  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_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 Large Cap Value Index Fund | Large-Cap Risk  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

· Large-Cap Risk—The risk that large-capitalization companies are more mature and may grow more slowly than the economy as a whole and tend to go in and out of favor based on market and economic conditions.

Nuveen Large Cap Value Index Fund | Risk Nondiversified Status [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

· Non-Diversification Risk—While the Fund is considered to be a diversified investment company under the 1940 Act, the Fund may become non-diversified under the 1940 Act without Fund shareholder approval when necessary to continue to track its benchmark index. Non-diversified status means that the Fund can invest a greater percentage of its assets in the securities of a single issuer than a diversified fund. Investing in a non-diversified fund involves greater risk than investing in a diversified fund because a loss in value of a particular investment may have a greater effect on the fund’s return since that investment may represent a larger portion of the fund’s total portfolio assets.

Nuveen Large Cap Value Index Fund | Russell 1000® Value Index  
Risk/Return: rr_RiskReturnAbstract  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deductions for fees, expenses or taxes)
Label rr_AverageAnnualReturnLabel Russell 1000® Value Index
1 Year rr_AverageAnnualReturnYear01 11.46%
5 Years rr_AverageAnnualReturnYear05 10.91%
10 Years rr_AverageAnnualReturnYear10 8.40%
Nuveen Large Cap Value Index 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) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Maximum sales charge (load) imposed on reinvested dividends and other distributions rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption or exchange fee rr_RedemptionFeeOverRedemption none
Maximum account fee rr_MaximumAccountFeeOverAssets none
Management fees rr_ManagementFeesOverAssets 0.04%
Other expenses rr_OtherExpensesOverAssets 0.01%
Total annual Fund operating expenses rr_ExpensesOverAssets 0.05%
Waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets none [1]
Total annual Fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.05%
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination February 28, 2025
1 Year rr_ExpenseExampleYear01 $ 5
3 Years rr_ExpenseExampleYear03 16
5 Years rr_ExpenseExampleYear05 28
10 Years rr_ExpenseExampleYear10 $ 64
Annual Return 2014 rr_AnnualReturn2014 13.37%
Annual Return 2015 rr_AnnualReturn2015 (3.81%)
Annual Return 2016 rr_AnnualReturn2016 17.23%
Annual Return 2017 rr_AnnualReturn2017 13.62%
Annual Return 2018 rr_AnnualReturn2018 (8.31%)
Annual Return 2019 rr_AnnualReturn2019 26.39%
Annual Return 2020 rr_AnnualReturn2020 2.90%
Annual Return 2021 rr_AnnualReturn2021 25.02%
Annual Return 2022 rr_AnnualReturn2022 (7.54%)
Annual Return 2023 rr_AnnualReturn2023 11.47%
Label rr_HighestQuarterlyReturnLabel Best quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 16.25%
Label rr_LowestQuarterlyReturnLabel Worst quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (26.61%)
1 Year rr_AverageAnnualReturnYear01 11.47%
5 Years rr_AverageAnnualReturnYear05 10.88%
10 Years rr_AverageAnnualReturnYear10 8.36%
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 01, 2002
Nuveen Large Cap Value Index Fund | Class R6 | After Taxes on Distributions  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 9.84%
5 Years rr_AverageAnnualReturnYear05 9.55%
10 Years rr_AverageAnnualReturnYear10 7.07%
Nuveen Large Cap Value Index Fund | Class R6 | After Taxes on Distributions and Sales  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 7.31%
5 Years rr_AverageAnnualReturnYear05 8.34%
10 Years rr_AverageAnnualReturnYear10 6.40%
Nuveen Large Cap Value Index 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) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Maximum sales charge (load) imposed on reinvested dividends and other distributions rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption or exchange fee rr_RedemptionFeeOverRedemption none
Maximum account fee rr_MaximumAccountFeeOverAssets none
Management fees rr_ManagementFeesOverAssets 0.04%
Other expenses rr_OtherExpensesOverAssets 0.14%
Total annual Fund operating expenses rr_ExpensesOverAssets 0.18%
Waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets none [1]
Total annual Fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.18%
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination February 28, 2025
1 Year rr_ExpenseExampleYear01 $ 18
3 Years rr_ExpenseExampleYear03 58
5 Years rr_ExpenseExampleYear05 101
10 Years rr_ExpenseExampleYear10 $ 230
1 Year rr_AverageAnnualReturnYear01 11.29%
5 Years rr_AverageAnnualReturnYear05 10.73%
10 Years rr_AverageAnnualReturnYear10 8.25% [2]
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 04, 2015
Nuveen Large Cap Value Index Fund | Retirement Class  
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) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Maximum sales charge (load) imposed on reinvested dividends and other distributions rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption or exchange fee rr_RedemptionFeeOverRedemption none
Maximum account fee rr_MaximumAccountFeeOverAssets none
Management fees rr_ManagementFeesOverAssets 0.04%
Other expenses rr_OtherExpensesOverAssets 0.26%
Total annual Fund operating expenses rr_ExpensesOverAssets 0.30%
Waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets none [1]
Total annual Fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.30%
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination February 28, 2025
1 Year rr_ExpenseExampleYear01 $ 31
3 Years rr_ExpenseExampleYear03 97
5 Years rr_ExpenseExampleYear05 169
10 Years rr_ExpenseExampleYear10 $ 381
1 Year rr_AverageAnnualReturnYear01 11.15%
5 Years rr_AverageAnnualReturnYear05 10.61%
10 Years rr_AverageAnnualReturnYear10 8.09%
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 01, 2002
Nuveen Large Cap Value Index Fund | Class W  
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) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Maximum sales charge (load) imposed on reinvested dividends and other distributions rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption or exchange fee rr_RedemptionFeeOverRedemption none
Maximum account fee rr_MaximumAccountFeeOverAssets none
Management fees rr_ManagementFeesOverAssets 0.04%
Other expenses rr_OtherExpensesOverAssets 0.01% [3]
Total annual Fund operating expenses rr_ExpensesOverAssets 0.05%
Waivers and expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.05%) [1],[4]
Total annual Fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets none
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination February 28, 2025
Other Expenses, New Fund, Based on Estimates [Text] rr_OtherExpensesNewFundBasedOnEstimates Estimate is for the current fiscal year.
1 Year rr_ExpenseExampleYear01 none
3 Years rr_ExpenseExampleYear03 none
5 Years rr_ExpenseExampleYear05 none
10 Years rr_ExpenseExampleYear10 none
[1]

Under the Fund’s expense reimbursement arrangements, the Fund’s investment adviser, Teachers Advisors, LLC, 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) 0.09% of average daily net assets for Class R6 shares; (ii) 0.24% of average daily net assets for Class I shares; (iii) 0.34% of average daily net assets for Retirement Class shares; and (iv) 0.09% of average daily net assets for Class W shares of the Fund. These expense reimbursement arrangements will continue through at least February 28, 2025, unless changed with approval of the Board of Trustees.
[2]

The performance shown for the Class I that is prior to its inception date is based on performance of the Class R6. The performance for these periods has not been restated to reflect the actual expenses of the Class I. If these actual expenses had been reflected, the performance of the Class I shown for these periods would have been different because the Class I has different expenses than the Class R6.
[3]

Estimate is for the current fiscal year.
[4]

Teachers Advisors, LLC has contractually agreed to waive and/or reimburse Class W’s Management fees and Other expenses (excluding interest, taxes, brokerage commissions or other transactional expenses, Acquired fund fees and expenses, Trustee expenses and extraordinary expenses) in their entirety. Teachers Advisors, LLC expects these waiver and/or reimbursement arrangements to remain in effect indefinitely, unless changed or terminated with approval of the Board of Trustees.