Label	Element	Value
Risk Return Abstract	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	NATIONWIDE MUTUAL FUNDS
Prospectus Date	rr_ProspectusDate	Feb. 28, 2025
Nationwide Bailard Cognitive Value Fund
Risk Return Abstract	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary: Nationwide Bailard Cognitive Value 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 Cognitive Value 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 278.84% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	278.84%
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 of small-cap value companies that are within a market capitalization range that is similar, although not identical, to the market capitalization range of those companies found in the Russell 2000® Value Index. Under normal market conditions, the Fund may invest up to 25% of the Fund’s net assets in common stocks of micro-cap companies whose market capitalization, measured at the time of purchase, is $300 million or less. There is no minimum market capitalization limit for the companies in which the Fund may invest. The Fund’s subadviser seeks to add value to the Fund’s portfolio through stock selection while maintaining a risk profile that is appropriate relative to the Russell 2000® Value Index. The subadviser uses both quantitative and qualitative techniques to identify stocks it believes are currently undervalued by the market but which still have good fundamentals. As part of the portfolio management of the Fund, the subadviser employs Behavioral Finance techniques in an attempt to capitalize on investors’ behavioral biases and cognitive errors that can result in securities being mispriced. Behavioral Finance is the study of why people do not always behave in an economically rational manner. Economic irrationality typically arises from investors maximizing personal benefit (not wealth), emotional investing, heuristic biases (e.g., “trial and error” or “rule of thumb” biases) and cognitive errors. The subadviser attempts to exploit investors’ biases and errors that it believes to be recurring and predictable, and to minimize its own susceptibility to these same biases and errors. 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. At times the subadviser emphasizes certain industries or sectors. The Fund may invest up to 25% of its net assets in U.S. dollar-denominated stocks of foreign companies. The Fund may also engage in active and frequent trading of portfolio securities.
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 3000 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:32.82%–4Q 2020Lowest Quarter:-34.38%–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 </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 Cognitive Value 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 Cognitive Value 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 Cognitive Value 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 Cognitive Value 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 Cognitive Value Fund | Smaller Company Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Smaller company risk – smaller companies are usually less stable in price and less liquid than larger, more established companies. Smaller companies are more vulnerable than larger companies to adverse business and economic developments and may have more limited resources. Therefore, they generally involve greater risk.
Nationwide Bailard Cognitive Value 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 Bailard Cognitive Value Fund | Micro Cap Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Micro-cap risk – investing in micro-cap companies involves greater risk than investing in small-, medium- or large- capitalization companies because the stocks of micro-cap companies tend to have greater price volatility and less liquidity than the stocks of larger companies. In addition, micro-cap companies tend to have smaller financial resources, less information available, more limited business lines and more geographic area concentration.
Nationwide Bailard Cognitive Value 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 Bailard Cognitive Value Fund | Behavioral Finance Techniques Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Behavioral Finance techniques risk – the criteria used in implementing Behavioral Finance techniques and the weight placed on those criteria may not be predictive of a security’s value, and the effectiveness of the criteria can change over time. There can be no guarantee that the subadviser will be successful in applying Behavioral Finance techniques to successfully predict investor behavior to exploit stock price anomalies, and the Fund may underperform funds that do not employ such techniques.
Nationwide Bailard Cognitive Value 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 Cognitive Value 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 Cognitive Value Fund | Portfolio Turnover Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Portfolio turnover risk – a higher portfolio turnover rate increases transaction costs, may adversely impact the Fund’s performance, and may result in higher taxes when Fund shares are held in a taxable account.
Nationwide Bailard Cognitive Value 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	0.43%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.43%
1 Year	rr_ExpenseExampleYear01	$ 712
3 Years	rr_ExpenseExampleYear03	1,001
5 Years	rr_ExpenseExampleYear05	1,312
10 Years	rr_ExpenseExampleYear10	$ 2,190
2015	rr_AnnualReturn2015	(3.65%)
2016	rr_AnnualReturn2016	25.35%
2017	rr_AnnualReturn2017	3.58%
2018	rr_AnnualReturn2018	(17.16%)
2019	rr_AnnualReturn2019	20.83%
2020	rr_AnnualReturn2020	8.47%
2021	rr_AnnualReturn2021	35.46%
Annual Return 2022	rr_AnnualReturn2022	(13.24%)
Annual Return 2023	rr_AnnualReturn2023	15.20%
Annual Return 2024	rr_AnnualReturn2024	11.35%
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	Dec. 31, 2020
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	32.82%
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	(34.38%)
1 Year	rr_AverageAnnualReturnYear01	4.93%
5 Years	rr_AverageAnnualReturnYear05	9.03%
10 Years	rr_AverageAnnualReturnYear10	6.80%
Nationwide Bailard Cognitive Value 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	0.18%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.93%
1 Year	rr_ExpenseExampleYear01	$ 95
3 Years	rr_ExpenseExampleYear03	296
5 Years	rr_ExpenseExampleYear05	515
10 Years	rr_ExpenseExampleYear10	$ 1,143
1 Year	rr_AverageAnnualReturnYear01	11.76%
5 Years	rr_AverageAnnualReturnYear05	10.73%
10 Years	rr_AverageAnnualReturnYear10	7.81%
Nationwide Bailard Cognitive Value 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	0.18%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.93%
1 Year	rr_ExpenseExampleYear01	$ 95
3 Years	rr_ExpenseExampleYear03	296
5 Years	rr_ExpenseExampleYear05	515
10 Years	rr_ExpenseExampleYear10	$ 1,143
1 Year	rr_AverageAnnualReturnYear01	11.78%
5 Years	rr_AverageAnnualReturnYear05	10.71%
10 Years	rr_AverageAnnualReturnYear10	7.80%
Nationwide Bailard Cognitive Value 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	0.43%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.18%
1 Year	rr_ExpenseExampleYear01	$ 120
3 Years	rr_ExpenseExampleYear03	375
5 Years	rr_ExpenseExampleYear05	649
10 Years	rr_ExpenseExampleYear10	$ 1,432
1 Year	rr_AverageAnnualReturnYear01	11.73%
5 Years	rr_AverageAnnualReturnYear05	10.66%
10 Years	rr_AverageAnnualReturnYear10	7.71%
Nationwide Bailard Cognitive Value Fund | After Taxes on Distributions | Class A Shares
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	0.97%
5 Years	rr_AverageAnnualReturnYear05	7.60%
10 Years	rr_AverageAnnualReturnYear10	5.46%
Nationwide Bailard Cognitive Value Fund | After Taxes on Distributions and Sales of Shares | Class A Shares
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	4.12%
5 Years	rr_AverageAnnualReturnYear05	6.82%
10 Years	rr_AverageAnnualReturnYear10	5.09%
Nationwide Bailard Cognitive Value Fund | Russell 3000® Index (The Index does not pay sales charges, fees, expenses or taxes.)
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	23.81%
5 Years	rr_AverageAnnualReturnYear05	13.86%
10 Years	rr_AverageAnnualReturnYear10	12.55%
Nationwide Bailard Cognitive Value Fund | Russell 2000® Value Index (The Index does not pay sales charges, fees, expenses or taxes.)
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	8.05%
5 Years	rr_AverageAnnualReturnYear05	7.29%
10 Years	rr_AverageAnnualReturnYear10	7.14%