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BNY Mellon International Stock Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Fund Summary
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The fund seeks long-term total return.
Expense [Heading] rr_ExpenseHeading Fees and Expenses
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 table 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 or shares of other funds in the BNY Mellon Family of Funds that are subject to a sales charge. More information about sales charges, including these and other discounts and waivers, is available from your financial professional and in the Shareholder Guide section beginning on page 10 of the prospectus, in the Appendix on page A-1 of the prospectus and in the How to Buy Shares section and the Additional Information About How to Buy Shares section beginning on page II-1 and page III-1, respectively, of the fund's Statement of Additional Information.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses ( expenses that you pay each year as a percentage of the value of your investment )
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock

The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover 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 12.30% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 12.30%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the fund or shares of other funds in the BNY Mellon Family of Funds that are subject to a sales charge.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

The Example is intended to help you 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. The Example also assumes that your investment has a 5% return each year and that the fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategy
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

To pursue its goal, the fund normally invests at least 80% of its net assets, plus any borrowings for investment purposes, in stocks. The fund normally invests primarily in foreign companies located in the developed markets. Examples of "developed markets" are Canada, Japan, Australia, Hong Kong and Western Europe. The fund ordinarily invests in at least three countries and is not geographically limited in its investment selection but, at times, may invest a substantial portion of its assets in a single country. The fund may invest in the securities of companies of any market capitalization, but seeks to invest primarily in companies with large market capitalizations. The fund considers large cap companies to be those with market capitalizations of $20 billion or more at the time of purchase.

The fund's sub-adviser, Walter Scott & Partners Limited (Walter Scott), an affiliate of BNY Mellon Investment Adviser, Inc., seeks investment opportunities in companies with fundamental strengths that indicate the potential for sustainable long-term growth, thereby benefitting from the power of compounding. Walter Scott focuses on individual stock selection, building the fund's portfolio from the bottom up through extensive fundamental research.

The investment process begins with the screening of reported company financials. Companies that meet certain broad absolute and trend criteria are candidates for more detailed analysis. Geographic, sector and industry allocations, as well as allocations to equity securities of companies with varying market capitalizations, are the results of, not part of, the investment process, because Walter Scott's sole focus is on the analysis of and investment in individual companies.

The fund typically sells a security when it no longer possesses the characteristics that caused Walter Scott to purchase the security for the fund's portfolio. A security may be a sell candidate when its valuation reaches or exceeds its calculated fair value, or there are deteriorating fundamentals. Walter Scott may reduce the weighting of a security held by the fund if it becomes overweighted as determined by Walter Scott.
Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the performance of the fund's Class A shares from year to year. Sales charges, if any, are not reflected in the bar chart, and, if those charges were included, returns would have been less than those shown. The table compares the average annual total returns of the fund's shares to those of the Morgan Stanley Capital International (MSCI) Europe, Australasia and Far East (EAFE®) Index, a broad measure of market performance. The fund's past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. Performance for each share class will vary due to differences in expenses. More recent performance information may be available at www.bny.com/investments.

Performance Additional Market Index [Text] rr_PerformanceAdditionalMarketIndex The table compares the average annual total returns of the fund's shares to those of the Morgan Stanley Capital International (MSCI) Europe, Australasia and Far East (EAFE®) Index, a broad measure of market performance.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.bny.com/investments
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund's past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Year-by-Year Total Returns as of 12/31 each year (%)
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads Sales charges, if any, are not reflected in the bar chart, and, if those charges were included, returns would have been less than those shown.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

During the periods shown in the chart:
Best Quarter
2022, Q4: 15.43
Worst Quarter
2022, Q2: (14.32)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Actual after-tax returns depend on the investor's tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through U.S. tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax performance is shown only for Class A shares. After-tax performance of the fund's other share classes will vary.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher Returns after taxes on distributions and sale of fund shares may be higher than returns before taxes or returns after taxes on distributions due to an assumed tax benefit from losses on a sale of the fund's shares at the end of the period.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

After-tax performance is shown only for Class A shares. After-tax performance of the fund's other share classes will vary. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, and do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor's tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through U.S. tax-deferred arrangements such as 401(k) plans or individual retirement accounts. Returns after taxes on distributions and sale of fund shares may be higher than returns before taxes or returns after taxes on distributions due to an assumed tax benefit from losses on a sale of the fund's shares at the end of the period.

Average Annual Return, Caption rr_AverageAnnualReturnCaption Average Annual Total Returns (as of 12/31/24)
BNY Mellon International Stock Fund | Principal Risks  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
Principal Risks

An investment in the fund is not a bank deposit. It is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. It is not a complete investment program. The fund's share price fluctuates, sometimes dramatically, which means you could lose money.
BNY Mellon International Stock Fund | Risk Lose Money [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock The fund's share price fluctuates, sometimes dramatically, which means you could lose money.
BNY Mellon International Stock Fund | Risk Not Insured [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock An investment in the fund is not a bank deposit. It is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.
BNY Mellon International Stock Fund | · Foreign investment risk  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

· Foreign investment risk: To the extent the fund invests in foreign securities, the fund's performance will be influenced by political, social and economic factors affecting investments in foreign issuers. Special risks associated with investments in foreign issuers include exposure to currency fluctuations, less liquidity, less developed or less efficient trading markets, lack of comprehensive company information, political and economic instability and differing auditing and legal standards. To the extent the fund's investments are focused in a limited number of foreign countries, the fund's performance could be more volatile than that of more geographically diversified funds.
BNY Mellon International Stock Fund | · Risks of stock investing  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

· Risks of stock investing: Stocks generally fluctuate more in value than bonds and may decline significantly over short time periods. There is the chance that stock prices overall will decline because stock markets tend to move in cycles, with periods of rising prices and falling prices. The market value of a stock may decline due to general market conditions or because of factors that affect the particular company or the company's industry.
BNY Mellon International Stock Fund | · Large-cap stock risk  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

· Large-cap stock risk: To the extent the fund invests in large capitalization stocks, the fund may underperform funds that invest primarily in the stocks of lower quality, smaller capitalization companies during periods when the stocks of such companies are in favor.
BNY Mellon International Stock Fund | · Growth stock risk  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

· Growth stock risk: Investors often expect growth companies to increase their earnings at a certain rate. If these expectations are not met, investors can punish the stocks inordinately, even if earnings do increase.

BNY Mellon International Stock Fund | · Liquidity risk  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

· Liquidity risk: When there is little or no active trading market for specific types of securities, it can become more difficult to sell the securities in a timely manner at or near their perceived value. In such a market, the value of such securities and the fund's share price may fall dramatically. Investments that are illiquid or that trade in lower volumes may be more difficult to value. Investments in foreign securities tend to have greater exposure to liquidity risk than domestic securities.
BNY Mellon International Stock Fund | · Market risk  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

· Market risk: The value of the securities in which the fund invests may be affected by political, regulatory, economic and social developments, and developments that impact specific economic sectors, industries or segments of the market.  In addition, turbulence in financial markets and reduced liquidity in equity, credit and/or fixed-income markets may negatively affect many issuers, which could adversely affect the fund.  Global economies and financial markets are becoming increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market.  These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies world-wide. 

BNY Mellon International Stock Fund | · Management risk  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

· Management risk: The investment process used by the fund's sub-adviser could fail to achieve the fund's investment goal and cause your fund investment to lose value.

BNY Mellon International Stock Fund | MSCI EAFE® Index reflects no deductions for fees, expenses or taxes  
Risk/Return: rr_RiskReturnAbstract  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes reflects no deductions for fees, expenses or taxes
Label rr_AverageAnnualReturnLabel MSCI EAFE® Index
1 Year rr_AverageAnnualReturnYear01 3.82%
5 Years rr_AverageAnnualReturnYear05 4.73%
10 Years rr_AverageAnnualReturnYear10 5.20%
BNY Mellon International Stock Fund | A  
Risk/Return: rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DISAX
Maximum sales charge (load) imposed on purchases(as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum deferred sales charge (load)(as a percentage of lower of purchase or sale price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.85%
Distribution (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Shareholder services fees rr_Component2OtherExpensesOverAssets 0.25%
Miscellaneous other expenses rr_Component3OtherExpensesOverAssets 0.14%
Total other expenses rr_OtherExpensesOverAssets 0.39%
Total annual fund operating expenses rr_ExpensesOverAssets 1.24%
1 Year rr_ExpenseExampleYear01 $ 694
3 Years rr_ExpenseExampleYear03 946
5 Years rr_ExpenseExampleYear05 1,217
10 Years rr_ExpenseExampleYear10 1,989
1 Year rr_ExpenseExampleNoRedemptionYear01 694
3 Years rr_ExpenseExampleNoRedemptionYear03 946
5 Years rr_ExpenseExampleNoRedemptionYear05 1,217
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,989
Annual Return 2015 rr_AnnualReturn2015 (0.93%)
Annual Return 2016 rr_AnnualReturn2016 4.30%
Annual Return 2017 rr_AnnualReturn2017 26.51%
Annual Return 2018 rr_AnnualReturn2018 (7.96%)
Annual Return 2019 rr_AnnualReturn2019 27.42%
Annual Return 2020 rr_AnnualReturn2020 18.84%
Annual Return 2021 rr_AnnualReturn2021 10.75%
Annual Return 2022 rr_AnnualReturn2022 (22.33%)
Annual Return 2023 rr_AnnualReturn2023 18.12%
Annual Return 2024 rr_AnnualReturn2024 (1.19%)
Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 15.43%
Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Jun. 30, 2022
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (14.32%)
Label rr_AverageAnnualReturnLabel returns before taxes
1 Year rr_AverageAnnualReturnYear01 (6.86%)
5 Years rr_AverageAnnualReturnYear05 2.37%
10 Years rr_AverageAnnualReturnYear10 5.60%
BNY Mellon International Stock Fund | A | After Taxes on Distributions  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel returns after taxes on distributions
1 Year rr_AverageAnnualReturnYear01 (7.38%)
5 Years rr_AverageAnnualReturnYear05 2.03%
10 Years rr_AverageAnnualReturnYear10 5.37%
BNY Mellon International Stock Fund | A | After Taxes on Distributions and Sales  
Risk/Return: rr_RiskReturnAbstract  
Label rr_AverageAnnualReturnLabel returns after taxes on distributions and sale of fund shares
1 Year rr_AverageAnnualReturnYear01 (3.41%)
5 Years rr_AverageAnnualReturnYear05 1.98%
10 Years rr_AverageAnnualReturnYear10 4.63%
BNY Mellon International Stock Fund | C  
Risk/Return: rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DISCX
Maximum sales charge (load) imposed on purchases(as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load)(as a percentage of lower of purchase or sale price) rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00%
Management fees rr_ManagementFeesOverAssets 0.85%
Distribution (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.75%
Shareholder services fees rr_Component2OtherExpensesOverAssets 0.25%
Miscellaneous other expenses rr_Component3OtherExpensesOverAssets 0.12%
Total other expenses rr_OtherExpensesOverAssets 0.37%
Total annual fund operating expenses rr_ExpensesOverAssets 1.97%
1 Year rr_ExpenseExampleYear01 $ 300
3 Years rr_ExpenseExampleYear03 618
5 Years rr_ExpenseExampleYear05 1,062
10 Years rr_ExpenseExampleYear10 2,296
1 Year rr_ExpenseExampleNoRedemptionYear01 200
3 Years rr_ExpenseExampleNoRedemptionYear03 618
5 Years rr_ExpenseExampleNoRedemptionYear05 1,062
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,296
Label rr_AverageAnnualReturnLabel returns before taxes
1 Year rr_AverageAnnualReturnYear01 (2.88%)
5 Years rr_AverageAnnualReturnYear05 2.86%
10 Years rr_AverageAnnualReturnYear10 5.45%
BNY Mellon International Stock Fund | I  
Risk/Return: rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DISRX
Maximum sales charge (load) imposed on purchases(as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load)(as a percentage of lower of purchase or sale price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.85%
Distribution (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Shareholder services fees rr_Component2OtherExpensesOverAssets none
Miscellaneous other expenses rr_Component3OtherExpensesOverAssets 0.08%
Total other expenses rr_OtherExpensesOverAssets 0.08%
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_ExpenseExampleNoRedemptionYear01 95
3 Years rr_ExpenseExampleNoRedemptionYear03 296
5 Years rr_ExpenseExampleNoRedemptionYear05 515
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,143
Label rr_AverageAnnualReturnLabel returns before taxes
1 Year rr_AverageAnnualReturnYear01 (0.88%)
5 Years rr_AverageAnnualReturnYear05 3.94%
10 Years rr_AverageAnnualReturnYear10 6.58%
BNY Mellon International Stock Fund | Y  
Risk/Return: rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DISYX
Maximum sales charge (load) imposed on purchases(as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load)(as a percentage of lower of purchase or sale price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management fees rr_ManagementFeesOverAssets 0.85%
Distribution (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Shareholder services fees rr_Component2OtherExpensesOverAssets none
Miscellaneous other expenses rr_Component3OtherExpensesOverAssets 0.04%
Total other expenses rr_OtherExpensesOverAssets 0.04%
Total annual fund operating expenses rr_ExpensesOverAssets 0.89%
1 Year rr_ExpenseExampleYear01 $ 91
3 Years rr_ExpenseExampleYear03 284
5 Years rr_ExpenseExampleYear05 493
10 Years rr_ExpenseExampleYear10 1,096
1 Year rr_ExpenseExampleNoRedemptionYear01 91
3 Years rr_ExpenseExampleNoRedemptionYear03 284
5 Years rr_ExpenseExampleNoRedemptionYear05 493
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,096
Label rr_AverageAnnualReturnLabel returns before taxes
1 Year rr_AverageAnnualReturnYear01 (0.85%)
5 Years rr_AverageAnnualReturnYear05 3.99%
10 Years rr_AverageAnnualReturnYear10 6.61%