Label	Element	Value
Risk Return Abstract	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	NATIONWIDE MUTUAL FUNDS
Prospectus Date	rr_ProspectusDate	Feb. 28, 2025
Nationwide BNY Mellon Dynamic US Core Fund
Risk Return Abstract	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary: Nationwide BNY Mellon Dynamic U.S. Core 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 BNY Mellon Dynamic U.S. Core Fund seeks long-term capital growth.
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 3.54% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	3.54%
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 seeks to provide investors with long-term growth of capital by outperforming the S&P 500® Index over a full market cycle while maintaining a similar level of market risk as the index. To achieve this goal, the Fund’s subadviser seeks to identify and construct the most optimal portfolio that targets an equity-like level of volatility by allocating assets among equity securities, money market instruments, futures contracts the value of which are derived from the performance of equity indexes and U.S. Treasury bonds (which are government-issued debt securities), and options on equity index and bond futures contracts. Futures and options are derivatives and may expose the Fund to leverage. Investors in the Fund should have a long-term perspective and be able to tolerate potentially sharp declines in value. Equity securities that the Fund buys primarily are common stocks of companies that are included in the S&P 500 Index. With respect to the Fund's portion that invests directly in equity securities, the Fund generally invests in all 500 stocks in the S&P 500 Index in proportion to their weightings in the index. Money market instruments serve primarily as cover for the Fund’s derivatives positions, although the subadviser also at times allocates assets to money market instruments in order to hedge against equity market risk. Money market instruments are high-quality short-term debt securities issued by governments and corporations. The Fund obtains exposure to U.S. Treasury bonds by purchasing futures contracts on U.S. Treasury bonds included in the Bloomberg U.S. Long Treasury Index. The Fund also may purchase options on U.S. Treasury bond futures contracts. The Fund uses Treasury bond futures and options to hedge against equity market risks. It is possible, however, that the Fund will lose money on both its equity investments and its bond exposures at the same time. Under normal circumstances, the Fund invests at least 80% of its net assets in securities of U.S. issuers or derivatives the value of which are linked to securities of U.S. issuers. In determining what the subadviser believes to be the optimal allocation among equities, U.S. Treasury bonds and money market instruments, the subadviser uses estimates of future returns and volatility. When the subadviser believes that equity markets appear favorable, it uses leverage generated by futures and options to increase the Fund’s equity exposure. When equity markets appear to be unfavorable, the subadviser reduces the Fund’s equity exposure through the use of equity index futures and related options. It also may allocate assets to U.S. Treasury bond futures and related options and/or money market instruments. By combining equity securities, futures on stock indexes and U.S. Treasury bonds, call options and money market instruments in varying amounts, the subadviser adjusts the Fund’s overall equity exposure within a range of 50%–150% of the Fund’s net assets. The subadviser regularly reviews the Fund's investments and will consider selling an investment when the subadviser believes such investment is no longer attractive as a result of price appreciation or a change in risk profile, or because other available investments are considered to be more attractive. The Fund is designed for investors seeking growth of capital by investing in a portfolio of equity and debt securities, and derivatives with investment characteristics similar to equity and debt securities, in order to achieve enhanced equity returns while maintaining a level of volatility risk that is similar to the S&P 500 Index
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. The Fund’s performance prior to July 16, 2018, reflects returns pursuant to different principal investment strategies and a different subadviser. If the Fund’s current strategies and subadviser had been in place for the prior period, the performance information shown would have been different.
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;">– Class R6 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:19.60%–2Q 2020Lowest Quarter:-18.09%–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 </span><span style="color:#000000;font-family:Arial;font-size:10pt;">calculated using 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 not relevant to investors in tax-advantaged</span><span style="color:#000000;font-family:Arial;font-size:10pt;"> 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 Class R6 shares only and will vary for other classes. </span>
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns are shown in the table for Class R6 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 Eagle Class shares is September 28, 2018. Pre-inception historical performance for Eagle Class shares is based on the previous performance of Institutional Service Class shares. Performance for Eagle Class shares has not been adjusted to reflect that share class’s lower expenses than those of Institutional Service Class shares.
Nationwide BNY Mellon Dynamic US Core 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 BNY Mellon Dynamic US Core 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 BNY Mellon Dynamic US Core Fund | Leverage Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Leverage risk – leverage risk is a direct risk of investing in the Fund. Leverage is investment exposure that exceeds the initial amount invested. Derivatives and other transactions that give rise to leverage may cause the Fund’s performance to be more volatile than if the Fund had not been leveraged. Leveraging also may require that the Fund liquidate portfolio securities when it may not be advantageous to do so to satisfy its obligations. Certain derivatives provide the potential for investment gain or loss that may be several times greater than the change in the value of an underlying security, asset, interest rate, index or currency, resulting in the potential for a loss that may be substantially greater than the amount invested. Some leveraged investments have the potential for unlimited loss, regardless of the size of the initial investment.
Nationwide BNY Mellon Dynamic US Core Fund | Derivatives Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Derivatives risk – derivatives may be volatile and may involve significant risks. The underlying security, measure or other instrument on which a derivative is based, or the derivative itself, may not perform as expected. Futures contracts and options on futures contracts typically involve leverage, which means that their use can significantly magnify the effect of price movements of the underlying securities or reference measures, disproportionately increasing the Fund’s losses and reducing the Fund’s opportunities for gains. Some of these derivatives have the potential for unlimited loss, including a loss that may be greater than the amount invested. Certain futures contracts and related options may be illiquid, making it difficult to close out an unfavorable position. Finally, the Fund's use of derivatives may cause a Fund to realize higher amounts of short-term capital gains (generally taxed at ordinary income tax rates) than if the Fund had not used such instruments.
Nationwide BNY Mellon Dynamic US Core Fund | Futures [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Futures – the prices of futures contracts typically are more volatile than those of stocks and bonds. Small movements in the values of the assets or measures of underlying futures contracts can cause disproportionately larger losses to the Fund. While futures may be more liquid than other types of derivatives, they may experience periods when they are less liquid than stocks, bonds or other investments.
Nationwide BNY Mellon Dynamic US Core Fund | Options [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Options – purchasing and selling options are highly specialized activities and entail greater-than-ordinary investment risks. The ability to close out positions in exchange-traded options depends on the existence of a liquid market. Options that expire unexercised have no value.
Nationwide BNY Mellon Dynamic US Core Fund | Fixed Income Securities Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Fixed-income securities risk – investments in fixed-income securities, such as bonds or other investments with debt-like characteristics (e.g., futures contracts the value of which are derived from the performance of bond indexes), subject the Fund to interest rate risk, credit risk and prepayment and call risk, which may affect the value of your investment. Interest rate risk is the risk that the value of fixed-income securities will decline when interest rates rise. Prices of longer-term securities generally change more in response to interest rate changes than prices of shorter-term securities. To the extent the Fund invests a substantial portion of its assets in debt securities with longer-term maturities, rising interest rates are more likely to cause periods of increased volatility and redemptions, and may cause the value of the Fund’s investments to decline significantly. The Federal Reserve Board recently lowered interest rates following a period of consistent rate increases, though it is unclear if such lowering will continue. The interest earned on the Fund's investments in fixed-income securities may decline when prevailing interest rates fall. Declines in interest rates increase the likelihood that debt obligations will be pre-paid, which, in turn, increases these risks. The Fund is subject to the risk that the income generated by its investments in fixed-income securities will not keep pace with inflation. Recent and potential future changes in government policy may affect interest rates. Credit risk is the risk that the issuer of a bond may default if it is unable to pay interest or principal when due. If an issuer defaults, the Fund will lose money. Changes in a bond issuer’s credit rating or the market’s perceptions of an issuer’s creditworthiness also may affect the value of a bond. Prepayment and call risk is the risk that certain debt securities will be paid off by the issuer more quickly than anticipated. If this occurs, the Fund may be required to invest the proceeds in securities with lower yields.
Nationwide BNY Mellon Dynamic US Core Fund | Cash Position Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Cash position risk – the Fund may hold significant positions in cash or money market instruments. A larger amount of such holdings will cause the Fund to miss investment opportunities presented during periods of rising market prices.
Nationwide BNY Mellon Dynamic US Core 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 BNY Mellon Dynamic US Core 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 BNY Mellon Dynamic US Core Fund | Strategy Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Strategy risk – the subadviser’s strategy may cause the Fund to experience above-average short-term volatility. Accordingly, the Fund may be appropriate for investors who have a long investment time horizon and who seek long-term capital growth while accepting the possibility of significant short-term, or even long-term, losses.
Nationwide BNY Mellon Dynamic US Core Fund | Index Strategy Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Index strategy risk – the portion of the Fund that invests directly in equity securities does not use defensive strategies or attempt to reduce its exposure to poor performing securities. Further, correlation between such portion’s performance and that of the index is likely to be negatively affected by the Fund’s expenses, changes in the composition of the index, and the timing of purchase and redemption of Fund shares.
Nationwide BNY Mellon Dynamic US Core 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 BNY Mellon Dynamic US Core Fund | Liquidity Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Liquidity risk – when there is little or no active trading market for specific types of securities or instruments, it can become more difficult to sell the securities or instruments at or near their perceived value. An inability to sell a portfolio position can adversely affect the Fund's value or prevent the Fund from being able to take advantage of other investment opportunities. Liquidity risk also includes the risk that the Fund will experience significant net redemptions of its shares at a time when it cannot find willing buyers for its portfolio securities or instruments or can sell its portfolio securities or instruments only at a material loss. To meet redemption requests, the Fund may be forced to sell other securities or instruments that are more liquid, but at unfavorable times and conditions.
Nationwide BNY Mellon Dynamic US Core 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	0.45%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.17%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.87%
Fee Waiver/Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.03%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	rr_NetExpensesOverAssets	0.84%
1 Year	rr_ExpenseExampleYear01	$ 656
3 Years	rr_ExpenseExampleYear03	834
5 Years	rr_ExpenseExampleYear05	1,027
10 Years	rr_ExpenseExampleYear10	$ 1,583
2015	rr_AnnualReturn2015	5.05%
2016	rr_AnnualReturn2016	3.24%
2017	rr_AnnualReturn2017	27.15%
2018	rr_AnnualReturn2018	(1.34%)
2019	rr_AnnualReturn2019	37.56%
2020	rr_AnnualReturn2020	19.20%
2021	rr_AnnualReturn2021	30.29%
Annual Return 2022	rr_AnnualReturn2022	(21.87%)
Annual Return 2023	rr_AnnualReturn2023	23.92%
Annual Return 2024	rr_AnnualReturn2024	22.68%
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	19.60%
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	(18.09%)
1 Year	rr_AverageAnnualReturnYear01	15.33%
5 Years	rr_AverageAnnualReturnYear05	11.33%
10 Years	rr_AverageAnnualReturnYear10	12.17%
Nationwide BNY Mellon Dynamic US Core 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	0.45%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other Expenses	rr_OtherExpensesOverAssets	0.33%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.28%
Fee Waiver/Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.03%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	rr_NetExpensesOverAssets	1.25%
1 Year	rr_ExpenseExampleYear01	$ 127
3 Years	rr_ExpenseExampleYear03	403
5 Years	rr_ExpenseExampleYear05	699
10 Years	rr_ExpenseExampleYear10	$ 1,543
1 Year	rr_AverageAnnualReturnYear01	21.89%
5 Years	rr_AverageAnnualReturnYear05	12.26%
10 Years	rr_AverageAnnualReturnYear10	12.47%
Nationwide BNY Mellon Dynamic US Core 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	0.45%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.08%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.53%
Fee Waiver/Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.03%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	rr_NetExpensesOverAssets	0.50%
1 Year	rr_ExpenseExampleYear01	$ 51
3 Years	rr_ExpenseExampleYear03	167
5 Years	rr_ExpenseExampleYear05	293
10 Years	rr_ExpenseExampleYear10	$ 662
1 Year	rr_AverageAnnualReturnYear01	22.68%
5 Years	rr_AverageAnnualReturnYear05	13.03%
10 Years	rr_AverageAnnualReturnYear10	13.19%
Nationwide BNY Mellon Dynamic US Core 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	0.45%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.24%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.69%
Fee Waiver/Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.03%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	rr_NetExpensesOverAssets	0.66%
1 Year	rr_ExpenseExampleYear01	$ 67
3 Years	rr_ExpenseExampleYear03	218
5 Years	rr_ExpenseExampleYear05	381
10 Years	rr_ExpenseExampleYear10	$ 856
1 Year	rr_AverageAnnualReturnYear01	22.49%
5 Years	rr_AverageAnnualReturnYear05	12.88%
10 Years	rr_AverageAnnualReturnYear10	13.01%
Nationwide BNY Mellon Dynamic US Core Fund | Eagle 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	0.45%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.18%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.63%
Fee Waiver/Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.03%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement	rr_NetExpensesOverAssets	0.60%
1 Year	rr_ExpenseExampleYear01	$ 61
3 Years	rr_ExpenseExampleYear03	199
5 Years	rr_ExpenseExampleYear05	348
10 Years	rr_ExpenseExampleYear10	$ 783
1 Year	rr_AverageAnnualReturnYear01	22.73%
5 Years	rr_AverageAnnualReturnYear05	13.01%
10 Years	rr_AverageAnnualReturnYear10	13.08%
Nationwide BNY Mellon Dynamic US Core Fund | After Taxes on Distributions | Class R6 Shares
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	21.33%
5 Years	rr_AverageAnnualReturnYear05	12.00%
10 Years	rr_AverageAnnualReturnYear10	10.83%
Nationwide BNY Mellon Dynamic US Core Fund | After Taxes on Distributions and Sales of Shares | Class R6 Shares
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	14.30%
5 Years	rr_AverageAnnualReturnYear05	10.20%
10 Years	rr_AverageAnnualReturnYear10	9.92%
Nationwide BNY Mellon Dynamic US Core 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 limiting annual fund operating expenses to 0.50% until at least February 28, 2026. Under the expense limitation agreement, the level to which operating expenses are limited applies to all share classes, excluding any taxes, interest, compensation payable to parties not affiliated with the Adviser for the recovery of tax reclaims, brokerage commissions, Rule 12b-1 fees, acquired fund fees and expenses, short-sale dividend expenses, administrative services fees, other expenses which are capitalized in accordance with generally accepted accounting principles and expenses incurred by the Fund in connection with any merger or reorganization, and may exclude other nonroutine expenses not incurred in the ordinary course of the Fund’s business. The expense limitation agreement may be changed or eliminated only with the consent of the Board of Trustees of the Trust. The Adviser may request and receive reimbursement from the Fund for advisory fees waived or other expenses reimbursed by the Adviser pursuant to the expense limitation agreement at a date not to exceed three years from the date in which the corresponding waiver or reimbursement to the Fund was made. However, no reimbursement may be made unless: (i) the Fund’s assets exceed $100 million and (ii) the total annual expense ratio of the class making such reimbursement is no higher than the amount of the expense limitation that was in place at the time the Adviser waived the fees or reimbursed the expenses and does not cause the expense ratio to exceed the current expense limitation. Reimbursement by the Fund of amounts previously waived or reimbursed by the Adviser is not permitted except as provided for in the expense limitation agreement.