Label	Element	Value
Risk Return Abstract	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	NATIONWIDE MUTUAL FUNDS
Prospectus Date	rr_ProspectusDate	Feb. 28, 2025
Nationwide Fund
Risk Return Abstract	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary: Nationwide Fund
Objective [Heading]	rr_ObjectiveHeading	<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;">Objective</span>
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Nationwide Fund seeks total return through a flexible combination of capital appreciation and current income.
Expense [Heading]	rr_ExpenseHeading	<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;">Fees and Expenses</span>
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes 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, 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. More information about these and other discounts is available from your financial professional and in “Investing with Nationwide Funds” commencing on page 78 of this Prospectus and in “Additional Information on Purchases and Sales” commencing on page 95 of the Statement of Additional Information. In addition, if you purchase shares through a specific intermediary, you may be subject to different sales charges including reductions in or waivers of such charges. More information about these intermediary-specific sales charge variations is available in Appendix A to the Fund’s Prospectus.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Shareholder Fees </span><span style="color:#000000;font-family:Arial;font-size:10pt;">(fees paid directly from your investment)</span>
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Annual Fund Operating Expenses </span><span style="color:#000000;font-family:Arial;font-size:10pt;">(expenses that you pay each year as a percentage of the value of your investment)</span>
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	<span style="font-family:Arial;font-size:8pt;">February 28, 2026</span>
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;">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 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 83.61% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	83.61%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	<span style="color:#000000;font-family:Arial;font-size:10pt;">You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at </span><span style="color:#000000;font-family:Arial;font-size:10pt;">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 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:12pt;font-weight:bold;">Example</span>
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you to 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 sell all of your shares at the end of those time periods. It assumes a 5% return each year and no change in expenses, and any expense limitation or fee waivers that may apply for the periods indicated above under “Fees and Expenses.” Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;">Principal Investment Strategies</span>
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund invests in a diversified portfolio of common stocks to produce an overall blended equity portfolio consisting of various types of stocks that the subadviser believes offer the potential for capital growth and/or dividend income. Most of the stocks in which the Fund invests are issued by large-capitalization companies. The Fund considers large-capitalization companies to be those companies with market capitalizations of more than $5 billion. Some of these companies may be located outside of the United States. The Fund makes market capitalization determinations with respect to a security at the time it purchases such security. In managing the Fund, the subadviser allocates the Fund’s assets across a variety of industries, selecting companies in each industry based on the research of a team of global industry analysts. The Fund typically seeks to maintain representation in each major industry represented by broad-based, large-cap U.S. equity indices. The subadviser employs a “bottom-up” approach to selecting securities, emphasizing those that it believes to represent above-average potential for total return, based on fundamental research and analysis. Fundamental analysis of a company typically involves the assessment of a variety of factors, and may include the company’s business environment, management quality, balance sheet, income statement, anticipated earnings, revenues and dividends, and environmental, social and/or governance (ESG) factors. The subadviser seeks to develop a portfolio that is broadly diversified across issuers, sectors, industries and styles. The Fund’s portfolio therefore will include stocks that are considered to be either growth stocks or value stocks. Because the subadviser’s process is driven primarily by individual stock selection, the overall portfolio’s yield, price-to-earnings ratio, price-to-book ratio, growth rate and other characteristics will vary over time and, at any given time, the Fund may emphasize either growth stocks or value stocks. The subadviser may sell a security when it believes that a significant change in the company’s business fundamentals exists, it has become overvalued in terms of earnings, assets or growth prospects, or in order to take advantage of more attractive alternatives.
Risk [Heading]	rr_RiskHeading	<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;">Principal Risks</span>
Risk [Text Block]	rr_RiskTextBlock	The Fund cannot guarantee that it will achieve its investment objective. As with any fund, the value of the Fund’s investments—and therefore, the value of Fund shares—may fluctuate. These changes may occur because of:Loss of money is a risk of 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.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;">Performance</span>
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table can help you evaluate the Fund’s potential risks. The bar chart shows how the Fund’s annual total returns have varied from year to year. The table compares the Fund’s average annual total returns to the returns of a broad-based securities market index.Remember, however, that past performance (before and after taxes) is not necessarily indicative of how the Fund will perform in the future. Updated performance information is available at no cost by visiting nationwide.com/mutualfundsor by calling 800-848-0920.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	<span style="font-family:Arial;font-size:10pt;">The bar chart shows how the Fund’s </span><span style="font-family:Arial;font-size:10pt;">annual total returns have varied from year to year. The table compares the Fund’s average annual total returns to the returns of a broad-based securities market index.</span>
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	<span style="font-family:Arial;font-size:10pt;">800-848-0920</span>
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	<span style="font-family:Arial;font-size:10pt;">nationwide.com/mutualfunds</span>
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	<span style="font-family:Arial;font-size:10pt;">Remember, however, that past performance (before and after taxes) is not necessarily indicative of how the Fund will perform in the future.</span>
Bar Chart [Heading]	rr_BarChartHeading	<span style="font-family:Arial;font-size:10pt;font-weight:bold;">Annual Total Returns</span><span style="font-family:Arial;font-size:10pt;font-weight:bold;margin-left:2.5pt;">– Institutional Service Class Shares</span><br/><span style="font-family:Arial;font-size:10pt;font-weight:bold;">(Years Ended December 31,)</span>
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Highest Quarter:21.71%–2Q 2020Lowest Quarter:-18.71%–1Q 2020
Performance Table Heading	rr_PerformanceTableHeading	<span style="font-family:Arial;font-size:10pt;font-weight:bold;">Average Annual Total Returns</span> <br/><span style="font-family:Arial;font-size:10pt;font-weight:bold;">(For the Periods Ended December 31, 2024)</span>
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	<span style="color:#000000;font-family:Arial;font-size:10pt;">After-tax returns are calculated using the historical highest </span><span style="color:#000000;font-family:Arial;font-size:10pt;">individual federal marginal income tax rates and do not reflect state and 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;">investors in tax-advantaged arrangements, such as individual retirement accounts, 401(k) plans or certain other employer-sponsored retirement plans.</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 are shown in the table for Institutional Service Class shares only and will vary for other classes. </span>
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns are shown in the table for Institutional Service Class shares only and will vary for other classes. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect state and local taxes. Your actual after-tax return depends on your personal tax situation and may differ from what is shown here. After-tax returns are not relevant to investors in tax-advantaged arrangements, such as individual retirement accounts, 401(k) plans or certain other employer-sponsored retirement plans.The inception date for Class R6 shares is April 10, 2018. Pre-inception historical performance for Class R6 shares is based on the previous performance of Institutional Service Class shares. Performance for Class R6 shares has not been adjusted to reflect that share class's lower expenses than Institutional Service Class shares.
Nationwide Fund | Risk Lose Money [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Loss of money is a risk of investing in the Fund.
Nationwide Fund | Equity Securities Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Equity securities risk – stock markets are volatile. The price of an equity security fluctuates based on changes in a company’s financial condition and overall market and economic conditions.
Nationwide Fund | Market Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Market risk – the risk that one or more markets in which the Fund invests will go down in value, including the possibility that the markets will go down sharply and unpredictably. This occurs due to numerous factors, including interest rates, the outlook for corporate profits, the health of the national and world economies, and the fluctuation of other securities markets around the world. These risks may be magnified if certain social, political, economic and other conditions and events (such as natural disasters, epidemics and pandemics, terrorism, conflicts and social unrest or rapid technological developments such as artificial intelligence) adversely interrupt the global economy.
Nationwide Fund | Selection Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Selection risk – the risk that the securities selected by the Fund’s subadviser will underperform the markets, the relevant indexes or the securities selected by other funds with similar investment objectives and investment strategies.
Nationwide Fund | Foreign Securities Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Foreign securities risk – foreign securities often are more volatile, harder to price and less liquid than U.S. securities. The prices of foreign securities may be further affected by other factors, such as changes in the exchange rates between the U.S. dollar and the currencies in which the securities are traded.
Nationwide Fund | Dividend Paying Stock Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Dividend-paying stock risk – there is no guarantee that the issuers of the stocks held by the Fund will declare dividends in the future or that, if dividends are declared, they will remain at their current levels or increase over time.
Nationwide Fund | Growth Style Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Growth style risk – growth stocks are generally more sensitive to market movements than other types of stocks primarily because their stock prices are based heavily on future expectations. If the subadviser’s assessment of the prospects for a company’s growth is wrong, or if the subadviser’s judgment of how other investors will value the company’s growth is wrong, then the Fund will suffer a loss as the price of the company’s stock may fall or not approach the value that the subadviser has placed on it. In addition, growth stocks as a group sometimes are out of favor and underperform the overall equity market for long periods while the market concentrates on other types of stocks, such as “value” stocks.
Nationwide Fund | Value Style Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Value style risk – value investing carries the risk that the market will not recognize a security’s intrinsic value for a long time or that a stock judged to be undervalued actually is appropriately priced. In addition, value stocks as a group sometimes are out of favor and underperform the overall equity market for long periods while the market concentrates on other types of stocks, such as “growth” stocks.
Nationwide Fund | Sector Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Sector risk – investments in particular industries or sectors may be more volatile than the overall stock market. Therefore, if the Fund emphasizes one or more industries or economic sectors, it will be more susceptible to financial, market or economic events affecting the particular issuers and industries participating in such sectors than funds that do not emphasize particular industries or sectors.
Nationwide Fund | Class A Shares
Risk Return Abstract	rr_RiskReturnAbstract
Maximum Sales Charge (Load) imposed on purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Management Fees	rr_ManagementFeesOverAssets	0.53%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.14%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.92%
Fee Waiver/Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.04%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	rr_NetExpensesOverAssets	0.88%
1 Year	rr_ExpenseExampleYear01	$ 660
3 Years	rr_ExpenseExampleYear03	848
5 Years	rr_ExpenseExampleYear05	1,051
10 Years	rr_ExpenseExampleYear10	$ 1,638
2015	rr_AnnualReturn2015	1.03%
2016	rr_AnnualReturn2016	11.53%
2017	rr_AnnualReturn2017	20.20%
2018	rr_AnnualReturn2018	(6.27%)
2019	rr_AnnualReturn2019	30.95%
2020	rr_AnnualReturn2020	22.62%
2021	rr_AnnualReturn2021	24.97%
Annual Return 2022	rr_AnnualReturn2022	(19.17%)
Annual Return 2023	rr_AnnualReturn2023	25.53%
Annual Return 2024	rr_AnnualReturn2024	21.95%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;margin-left:0.0pt;">Highest Quarter:</span>
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2020
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	21.71%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;margin-left:0.0pt;">Lowest Quarter:</span>
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Mar. 31, 2020
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(18.71%)
1 Year	rr_AverageAnnualReturnYear01	14.66%
5 Years	rr_AverageAnnualReturnYear05	12.05%
10 Years	rr_AverageAnnualReturnYear10	11.23%
Nationwide Fund | Class R Shares
Risk Return Abstract	rr_RiskReturnAbstract
Maximum Sales Charge (Load) imposed on purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.53%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other Expenses	rr_OtherExpensesOverAssets	0.31%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.34%
Fee Waiver/Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.04%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	rr_NetExpensesOverAssets	1.30%
1 Year	rr_ExpenseExampleYear01	$ 132
3 Years	rr_ExpenseExampleYear03	421
5 Years	rr_ExpenseExampleYear05	730
10 Years	rr_ExpenseExampleYear10	$ 1,609
1 Year	rr_AverageAnnualReturnYear01	21.29%
5 Years	rr_AverageAnnualReturnYear05	13.02%
10 Years	rr_AverageAnnualReturnYear10	11.48%
Nationwide Fund | Class R6 Shares
Risk Return Abstract	rr_RiskReturnAbstract
Maximum Sales Charge (Load) imposed on purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.53%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.06%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.59%
Fee Waiver/Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.04%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	rr_NetExpensesOverAssets	0.55%
1 Year	rr_ExpenseExampleYear01	$ 56
3 Years	rr_ExpenseExampleYear03	185
5 Years	rr_ExpenseExampleYear05	325
10 Years	rr_ExpenseExampleYear10	$ 734
1 Year	rr_AverageAnnualReturnYear01	22.06%
5 Years	rr_AverageAnnualReturnYear05	13.74%
10 Years	rr_AverageAnnualReturnYear10	12.23%
Nationwide Fund | Institutional Service Class Shares
Risk Return Abstract	rr_RiskReturnAbstract
Maximum Sales Charge (Load) imposed on purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.53%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.14%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.67%
Fee Waiver/Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.04%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	rr_NetExpensesOverAssets	0.63%
1 Year	rr_ExpenseExampleYear01	$ 64
3 Years	rr_ExpenseExampleYear03	210
5 Years	rr_ExpenseExampleYear05	369
10 Years	rr_ExpenseExampleYear10	$ 831
1 Year	rr_AverageAnnualReturnYear01	21.95%
5 Years	rr_AverageAnnualReturnYear05	13.65%
10 Years	rr_AverageAnnualReturnYear10	12.17%
Nationwide Fund | After Taxes on Distributions | Institutional Service Class Shares
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	18.63%
5 Years	rr_AverageAnnualReturnYear05	11.58%
10 Years	rr_AverageAnnualReturnYear10	9.91%
Nationwide Fund | After Taxes on Distributions and Sales of Shares | Institutional Service Class Shares
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	14.66%
5 Years	rr_AverageAnnualReturnYear05	10.45%
10 Years	rr_AverageAnnualReturnYear10	9.23%
Nationwide Fund | S&P 500® Index (The Index does not pay sales charges, fees, expenses or taxes.)
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	25.02%
5 Years	rr_AverageAnnualReturnYear05	14.53%
10 Years	rr_AverageAnnualReturnYear10	13.10%

[1] Nationwide Mutual Funds (the “Trust”) and Nationwide Fund Advisors (the “Adviser”) have entered into a written contract waiving 0.045% of the management fee to which the Adviser would otherwise be entitled until February 28, 2026. Pursuant to the terms of the written contract, the Adviser is not entitled to recoup any fees it has waived. The written contract may be changed or eliminated only with consent of the Board of Trustees of the Trust.