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Risk Return Abstract rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName NATIONWIDE MUTUAL FUNDS
Prospectus Date rr_ProspectusDate Feb. 28, 2025
Nationwide Bailard Technology and Science Fund  
Risk Return Abstract rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Fund Summary: Nationwide Bailard Technology & Science 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 Bailard Technology & Science Fund seeks long-term capital appreciation.
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>
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 20.38% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 20.38%
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 will, under normal market conditions, invest its assets primarily in common stocks located in the United States and abroad that the subadviser believes have superior sales and earnings growth potential, but at a reasonable price. It is expected that, under normal market conditions, the Fund will invest at least 80% of its net assets in companies in the technology and science sectors, including in the semiconductor, semiconductor equipment, hardware, software, information technology services, communications equipment, social media, biotechnology, healthcare, financial technology, and interactive media sectors, and may invest in other sectors if determined by the Fund’s subadviser to be in the Fund’s best interests. The Fund may also invest up to 25% of its net assets in U.S. dollar denominated stocks of foreign companies located in both developed and emerging markets. Using a combination of qualitative and quantitative techniques, the Fund’s subadviser seeks to identify those securities it believes offer superior sales and earnings growth prospects at a reasonable valuation. The subadviser seeks to add value to the Fund’s portfolio through stock selection. In addition to evaluating traditional risk measures, the subadviser assesses the risk profiles of environmental, social and governance (“ESG”) factors on companies in which the Fund may invest. The subadviser's assessment is based on a proprietary scoring matrix to rate each company in the investable universe based on its potential exposure to ESG risk factors. Companies that the subadviser perceives as having high levels of ESG risk and/or significant negative externalities associated with their products or services may be excluded from investment consideration. The subadviser may also consider market indices and its own estimates of competitor portfolio weightings in managing the Fund’s portfolio. The Fund may also invest opportunistically in initial public offerings (“IPOs”) and in securities of new public companies that have had their IPO within the last six months and that the subadviser finds attractive. The subadviser seeks investment opportunities to penetrate new and existing markets specifically within the technology, biotechnology and other growth industries. In looking at particular companies, the subadviser evaluates the scope of business of a company and its competitive landscape, as well as its management team’s experience.
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 and an additional index. The additional index has characteristics relevant to the Fund’s investment strategy.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/mutualfunds or by calling 800-848-0920. Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.The Fund has begun comparing its performance to the Russell 1000 Index to satisfy a new Securities and Exchange Commission (SEC) disclosure requirement.
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 and an additional index. The additional index has characteristics relevant to the Fund’s investment strategy.</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;">– Class A Shares</span><br/><span style="font-family:Arial;font-size:10pt;font-weight:bold;">(Years Ended December 31,)</span>
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads <span style="color:#000000;font-family:Arial;font-size:10pt;">Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.</span>
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock Highest Quarter:34.79%–2Q 2020Lowest Quarter:-23.23%–2Q 2022
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 </span><span style="color:#000000;font-family:Arial;font-size:10pt;">the historical highest 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 </span><span style="color:#000000;font-family:Arial;font-size:10pt;">not relevant to 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 for Class A shares only and will vary for other classes. </span>
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock After-tax returns are shown for Class A 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.
Nationwide Bailard Technology and Science 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 Bailard Technology and Science 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 Bailard Technology and Science 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 Bailard Technology and Science 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 Bailard Technology and Science 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 Bailard Technology and Science 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. Because the Fund’s investment universe consists of securities in the semiconductor, semiconductor equipment, hardware, software, information technology services, communications equipment, social media, biotechnology and interactive media sectors, the Fund has a heavy weighting in these sectors. The Fund’s investments in technology and science related sectors expose the Fund to risks associated with economic conditions in the technology and science markets to a greater extent than funds that do not invest heavily in these sectors. Due to intense global competition, a less diversified product line and other factors, companies that develop and/or rely on technology are often highly sensitive to downswings in the economy. Such companies may also experience volatile swings in demand for their products and services due to changing economic conditions, rapid technological advances and shorter product lifespans.
Nationwide Bailard Technology and Science Fund | Initial Public Offering Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Initial public offering risk – availability of IPOs may be limited and the Fund may not be able to buy any shares at the offering price, or may not be able to buy as many shares at the offering price as it would like, which may adversely impact Fund performance. Further, IPO prices often are subject to greater and more unpredictable price changes than more established stocks.
Nationwide Bailard Technology and Science Fund | New Public Company Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock New public company risk – the risks associated with investing in new public companies include small size, limited financial resources and operating history, dependence on a limited number of products and markets and lack of management depth.
Nationwide Bailard Technology and Science 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.
Nationwide Bailard Technology and Science Fund | Emerging Markets Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Emerging markets risk – emerging markets are riskier than more developed markets because they tend to develop unevenly and may never fully develop. Investments in emerging markets are considered speculative. Emerging markets are more likely to experience hyperinflation and currency devaluations, which adversely affect returns to U.S. investors. In addition, many emerging securities markets have far lower trading volumes and less liquidity than developed markets. Since these markets are smaller than developed markets, they may be more likely to suffer sharp and frequent price changes or long-term price depression because of adverse publicity, investor perceptions or the actions of a few large investors. Practices in relation to settlement of securities transactions in emerging markets involve higher risks than those in developed markets, in part because the Fund will need to use brokers and counterparties that are less well capitalized, and custody and registration of assets in some countries are unreliable compared to developed markets. Companies in emerging market countries generally are subject to less stringent financial reporting, accounting and auditing standards than companies in more developed countries. In addition, information about such companies may be less available and reliable. Many emerging markets also have histories of political instability and abrupt changes in policies, and the ability to bring and enforce actions may be limited. Certain emerging markets also face other significant internal or external risks, including the risk of war, nationalization of assets, unexpected market closures and ethnic, religious and racial conflicts.
Nationwide Bailard Technology and Science Fund | Enviornmental Social and Governance Investing Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Environmental, Social and Governance investing risk – the risk that, because the Fund’s ESG strategy will select or exclude securities of certain issuers for reasons other than investment performance, the Fund’s performance will differ from or underperform compared to funds that do not utilize an ESG investing strategy. ESG investing is qualitative and subjective by nature, and there is no guarantee that the factors utilized by the Fund’s subadviser or any judgment exercised by the subadviser will reflect the opinions of any particular investor.
Nationwide Bailard Technology and Science 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 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.20%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.20%
1 Year rr_ExpenseExampleYear01 $ 690
3 Years rr_ExpenseExampleYear03 934
5 Years rr_ExpenseExampleYear05 1,197
10 Years rr_ExpenseExampleYear10 $ 1,946
2015 rr_AnnualReturn2015 5.80%
2016 rr_AnnualReturn2016 10.83%
2017 rr_AnnualReturn2017 37.61%
2018 rr_AnnualReturn2018 (3.64%)
2019 rr_AnnualReturn2019 38.43%
2020 rr_AnnualReturn2020 50.60%
2021 rr_AnnualReturn2021 18.20%
Annual Return 2022 rr_AnnualReturn2022 (37.53%)
Annual Return 2023 rr_AnnualReturn2023 62.38%
Annual Return 2024 rr_AnnualReturn2024 26.71%
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 34.79%
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 Jun. 30, 2022
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (23.23%)
1 Year rr_AverageAnnualReturnYear01 19.43%
5 Years rr_AverageAnnualReturnYear05 16.62%
10 Years rr_AverageAnnualReturnYear10 16.59%
Nationwide Bailard Technology and Science Fund | Class M 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 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.13%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.88%
1 Year rr_ExpenseExampleYear01 $ 90
3 Years rr_ExpenseExampleYear03 281
5 Years rr_ExpenseExampleYear05 488
10 Years rr_ExpenseExampleYear10 $ 1,084
1 Year rr_AverageAnnualReturnYear01 27.10%
5 Years rr_AverageAnnualReturnYear05 18.35%
10 Years rr_AverageAnnualReturnYear10 17.65%
Nationwide Bailard Technology and Science 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 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.13%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.88%
1 Year rr_ExpenseExampleYear01 $ 90
3 Years rr_ExpenseExampleYear03 281
5 Years rr_ExpenseExampleYear05 488
10 Years rr_ExpenseExampleYear10 $ 1,084
1 Year rr_AverageAnnualReturnYear01 27.12%
5 Years rr_AverageAnnualReturnYear05 18.35%
10 Years rr_AverageAnnualReturnYear10 17.65%
Nationwide Bailard Technology and Science 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 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.26%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.01%
1 Year rr_ExpenseExampleYear01 $ 103
3 Years rr_ExpenseExampleYear03 322
5 Years rr_ExpenseExampleYear05 558
10 Years rr_ExpenseExampleYear10 $ 1,236
1 Year rr_AverageAnnualReturnYear01 26.97%
5 Years rr_AverageAnnualReturnYear05 18.24%
10 Years rr_AverageAnnualReturnYear10 17.54%
Nationwide Bailard Technology and Science Fund | After Taxes on Distributions | Class A Shares  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 15.80%
5 Years rr_AverageAnnualReturnYear05 13.37%
10 Years rr_AverageAnnualReturnYear10 13.64%
Nationwide Bailard Technology and Science Fund | After Taxes on Distributions and Sales of Shares | Class A Shares  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 14.13%
5 Years rr_AverageAnnualReturnYear05 12.78%
10 Years rr_AverageAnnualReturnYear10 13.01%
Nationwide Bailard Technology and Science Fund | Russell 1000® Index (The Index does not pay sales charges, fees, expenses or taxes.)  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 24.51%
5 Years rr_AverageAnnualReturnYear05 14.28%
10 Years rr_AverageAnnualReturnYear10 12.87%
Nationwide Bailard Technology and Science Fund | S&P North American Technology Sector IndexTM (The Index does not pay sales charges, fees, expenses or taxes.)  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 36.08%
5 Years rr_AverageAnnualReturnYear05 21.06%
10 Years rr_AverageAnnualReturnYear10 20.70%