Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	ING MUTUAL FUNDS
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
ING Global Natural Resources Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	ING Global Natural Resources Fund
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks to attain long-term capital appreciation.
Expense [Heading]	rr_ExpenseHeading	FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. 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 ING Funds. More information about these and other discounts is available from your financial professional and in the discussion in the Sales Charges section of the Prospectus (page 103) or the Statement of Additional Information (page 200).
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 you pay each year as a % of the value of your investment
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	March 1, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover % of average value of portfolio
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 transactions costs and may mean higher taxes if you are investing in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the Expense Examples, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 44% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	44.00%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	A contingent deferred sales charge of 1.00% is assessed on certain redemptions of Class A shares made within 18 months after purchase where no initial sales charge was paid at the time of purchase as part of an investment of $1 million or more.
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 ING Funds.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	50,000
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Examples $
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Examples are intended to help you compare the cost of investing in shares of the Fund with the costs of investing in other mutual funds. The Examples assume that you invest $10,000 in the Fund for the time periods indicated. The Examples show costs if you sold (redeemed) your shares at the end of the period or continued to hold them. The Examples also assume that your investment had 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:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The Examples reflect applicable expense limitation agreements and/or waivers in effect, if any, for the one-year period and the first year of the three-, five-, and ten-year periods.
Strategy [Heading]	rr_StrategyHeading	PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal market conditions, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes) in the equity securities of companies in the natural resources industries located in a number of different countries, one of which may be the United States. The Fund will provide shareholders with at least 60 days’ prior notice of any change in this investment policy. A company is considered to be in a natural resources industry when it is significantly engaged, directly or indirectly, in natural resources, meaning that at least 50% of its assets, revenues, or operating profits are involved in or result from researching, exploring, developing, mining, refining, processing, fabricating, transporting, trading, distributing or owning natural resource assets. For these purposes, companies in the natural resources industries include those significantly engaged, directly or indirectly, in the following industries: integrated oil and gas; oil and gas exploration and production; oil and gas storage and transportation; oil and gas refining and marketing; coal and consumable fuels; energy equipment and services; metals and mining; precious metals; paper and forest products; containers and packaging; gas utilities; real estate investment trusts; industrial conglomerates; diversified consumer materials; electric utilities; and independent power producers and energy traders. The Fund is permitted to invest up to a maximum of 50% of its assets in any single industry that is engaged in any of the types of natural resources industries set out above. The investment strategy is based on the belief that investment in securities of companies in natural resources industries can protect against eroding monetary values or a rise in activity which consumes one or more types of commodities. The Fund also may invest in securities issued by companies that are not in natural resources industries, investment-grade corporate debt, and repurchase agreements. The Fund is permitted to invest directly in commodities including gold bullion and coins. The Fund may invest without limit in securities of foreign issuers, including emerging markets. Equity securities in which the Fund invests may be listed on the U.S. or foreign securities exchanges or traded over-the-counter and include: common stock; direct equity interests in trusts (including Canadian Royalty Trusts); preferred stock; partnerships, including master limited partnerships; restricted securities; and depositary receipts. The Fund normally invests in companies with a large capitalization, but may also invest in mid- and small-sized companies. The Fund may also invest in other investment companies, including exchange-traded funds, to the extent permitted under the Investment Company Act of 1940, as amended, and the rules, regulations, and exemptive orders thereunder (“1940 Act”). The Fund is permitted to invest in derivative instruments, including futures and structured notes, whose value is linked to the price of a commodity or commodity index. The Fund typically uses derivatives for the purpose of cash equitization. The Fund generally keeps a small cash balance on hand to manage potential outflows. In order to maintain equity market exposure on that cash balance, the Fund typically invests in derivatives designed to track broad equity market indices. The Fund is non-diversified, which means it may invest a significant portion of its assets in a single issuer. The sub-adviser (“Sub-Adviser”) may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into opportunities believed to be more promising, among others. The Fund may lend portfolio securities on a short-term or long-term basis, up to 331 / 3 % of its total assets.
Strategy Portfolio Concentration [Text]	rr_StrategyPortfolioConcentration	Under normal market conditions, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes) in the equity securities of companies in the natural resources industries located in a number of different countries, one of which may be the United States. The Fund will provide shareholders with at least 60 days’ prior notice of any change in this investment policy.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	You could lose money on an investment in the Fund. Any of the following risks, among others, could affect Fund performance or cause the Fund to lose money or to underperform market averages of other funds. Commodities   The operations and financial performance of companies in natural resources industries may be directly affected by commodity prices. This risk is exacerbated for those natural resources companies that own the underlying commodity. Company   The price of a given company’s stock could decline or underperform for many reasons including, among others, poor management, financial problems, or business challenges. If a company declares bankruptcy or becomes insolvent, its stock could become worthless. Concentration   As a result of the Fund “concentrating,” as that term is defined in the 1940 Act, its assets in the securities of a particular industry or group of industries or single country or region, the Fund may be subject to greater market fluctuations than a fund that has securities representing a broader range of investment alternatives. If securities in which the Fund concentrates fall out of favor, the Fund could underperform funds that have greater diversification. Credit   Prices of bonds and other debt instruments can fall if the issuer’s actual or perceived financial health deteriorates, whether because of broad economic or issuer-specific reasons. In certain cases, the issuer could be late in paying interest or principal, or could fail to pay altogether. Currency   To the extent that the Fund invests directly in foreign (non-U.S.) currencies or in securities denominated in, or that trade in, foreign (non-U.S.) currencies, it is subject to the risk that those (non-U.S.) currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency being hedged. Derivative Instruments   Derivative instruments are subject to a number of risks, including the risk of changes in the market price of the underlying securities, credit risk with respect to the counterparty, risk of loss due to changes in interest rates and liquidity risk. The use of certain derivatives may also have a leveraging effect which may increase the volatility of the Fund and reduce its returns. Foreign Investments/Developing and Emerging Markets Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments. Foreign investment risks may be greater in developing and emerging markets than in developed markets. Interest Rate   With bonds and other fixed rate debt instruments, a rise in interest rates generally causes values to fall; conversely, values generally rise as interest rates fall. The higher the credit quality of the instrument, and the longer its maturity or duration, the more sensitive it is likely to be to interest rate risk. In the case of inverse securities, the interest rate generally will decrease when the market rate of interest to which the inverse security is indexed decreases. Issuer Non-Diversification   The Fund is classified as a “non-diversified” investment company and, therefore, is subject to the risks of focusing investments in a small number of issuers, industries or foreign currencies, including being more susceptible to risks associated with a single economic, political or regulatory occurrence than a more diversified portfolio might be. Liquidity   If a security is illiquid, the Fund might be unable to sell the security at a time when the Fund’s manager might wish to sell, and the security could have the effect of decreasing the overall level of the Fund’s liquidity. Further, the lack of an established secondary market may make it more difficult to value illiquid securities, which could vary from the amount the Fund could realize upon disposition. The Fund may make investments that become less liquid in response to market developments or adverse investor perception. The Fund could lose money if it cannot sell a security at the time and price that would be most beneficial to the Fund. Market   Stock prices may be volatile and are affected by the real or perceived impacts of such factors as economic conditions and political events. The stock market tends to be cyclical, with periods when stock prices generally rise and periods when stock prices generally decline. Any given stock market segment may remain out of favor with investors for a short or long period of time, and stocks as an asset class may underperform bonds or other asset classes during some periods. Market Capitalization   Stocks fall into three broad market capitalization categories - large, mid, and small. Investing primarily in one category carries the risk that, due to current market conditions, that category may be out of favor with investors. If valuations of large-capitalization companies appear to be greatly out of proportion to the valuations of mid- or small-capitalization companies, investors may migrate to the stocks of mid- and small-sized companies causing the Fund that invests in these companies to increase in value more rapidly than a fund that invests in larger, fully-valued companies. Investing in mid- and small-capitalization companies may be subject to special risks associated with narrower product lines, more limited financial resources, smaller management groups, and a more limited trading market for their stocks as compared with larger companies. As a result, stocks of mid- and small-capitalization companies may decline significantly in market downturns. Other Investment Companies   The main risk of investing in other investment companies, including exchange-traded funds, is the risk that the value of the securities underlying an investment company might decrease. Because the Fund may invest in other investment companies, you will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. Over-the-Counter Investments   Investments purchased over-the-counter (“OTC”), including securities and derivatives, can involve greater risks than securities traded on recognized stock exchanges. OTC securities are generally securities of smaller or newer companies that may have limited product lines and markets compared to larger companies. They also can have less management depth, more reliance on key personnel, and less access to capital and credit. OTC securities tend to trade less frequently and in lower volume, and as a result have greater liquidity risk. Many of the protections afforded to participants on some organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivatives transactions. Additionally, OTC investments are generally purchased either directly from a dealer or in negotiated transactions with the issuer and as such may expose the Fund to counterparty risk. Securities Lending   Securities lending involves two primary risks: “investment risk” and “borrower default risk.” Investment risk is the risk that the Fund will lose money from the investment of the cash collateral received from the borrower. Borrower default risk is the risk that the Fund will lose money due to the failure of a borrower to return a borrowed security in a timely manner. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money on an investment in the Fund.
Risk Nondiversified Status [Text]	rr_RiskNondiversifiedStatus	Issuer Non-Diversification   The Fund is classified as a “non-diversified” investment company and, therefore, is subject to the risks of focusing investments in a small number of issuers, industries or foreign currencies, including being more susceptible to risks associated with a single economic, political or regulatory occurrence than a more diversified portfolio might be.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	PERFORMANCE INFORMATION
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following information is intended to help you understand the risks of investing in the Fund. The following bar chart shows the changes in the Fund’s performance from year to year, and the table compares the Fund’s performance to the performance of a broad-based securities market index/indices for the same period. The Fund’s performance information reflects applicable fee waivers and/or expense limitations in effect during the period presented. Absent such fee waivers/expense limitations, if any, performance would have been lower. The bar chart shows the performance of the Fund’s Class A shares. Sales charges are not reflected in the bar chart. If they were, returns would be less than those shown. However, the table includes all applicable fees and sales charges. Other class shares’ performance would be higher or lower than Class A shares’ performance because of the higher or lower expenses paid by Class A shares. The Fund’s past performance (before and after taxes) is no guarantee of future results. For the most recent performance figures, go to www.INGFunds.com/literature or call 1-800-992-0180.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart shows the changes in the Fund’s performance from year to year, and the table compares the Fund’s performance to the performance of a broad-based securities market index/indices for the same period.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	1-800-992-0180
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.INGFunds.com/literature
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of future results.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Year Total Returns Class A (as of December 31 of each year)
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Sales charges are not reflected in the bar chart. If they were, returns would be less than those shown.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best quarter: 4th 2003, 23.57% and Worst quarter: 3rd 2008, (30.45)%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns% (for the periods ended December 31, 2012)
Performance Table Does Reflect Sales Loads	rr_PerformanceTableDoesReflectSalesLoads	However, the table includes all applicable fees and sales charges.
Index No Deduction for Fees, Expenses, Taxes [Text]	rr_IndexNoDeductionForFeesExpensesTaxes	The index returns do not reflect deductions for fees, expenses, or taxes.
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 an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through 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 returns are shown for Class A shares only. After-tax returns for other classes will vary.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases the after-tax returns may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	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 an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. In some cases the after-tax returns may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. After-tax returns are shown for Class A shares only. After-tax returns for other classes will vary.
ING Global Natural Resources Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) as a % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge as a % of purchase or sales price, whichever is less	rr_MaximumDeferredSalesChargeOverOther	none	[1]
Management Fees	rr_ManagementFeesOverAssets	0.87%
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Administrative Services Fees	rr_Component1OtherExpensesOverAssets	0.10%
Other Expenses	rr_OtherExpensesOverAssets	0.34%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.56%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	none	[2]
Total Annual Fund Operating Expenses after Waivers and Reimbursements	rr_NetExpensesOverAssets	1.56%
1 Yr	rr_ExpenseExampleYear01	725
3 Yrs	rr_ExpenseExampleYear03	1,039
5 Yrs	rr_ExpenseExampleYear05	1,376
10 Yrs	rr_ExpenseExampleYear10	2,325
1 Yr	rr_ExpenseExampleNoRedemptionYear01	725
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	1,039
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	1,376
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	2,325
2003	rr_AnnualReturn2003	46.42%
2004	rr_AnnualReturn2004	(10.25%)
2005	rr_AnnualReturn2005	32.08%
2006	rr_AnnualReturn2006	24.64%
2007	rr_AnnualReturn2007	32.95%
2008	rr_AnnualReturn2008	(41.59%)
2009	rr_AnnualReturn2009	36.88%
2010	rr_AnnualReturn2010	21.05%
2011	rr_AnnualReturn2011	(9.73%)
2012	rr_AnnualReturn2012	(3.47%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2003
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	23.57%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(30.45%)
1 Yr	rr_AverageAnnualReturnYear01	(9.05%)
5 Yrs	rr_AverageAnnualReturnYear05	(4.49%)
10 Yrs	rr_AverageAnnualReturnYear10	8.63%
since inception	rr_AverageAnnualReturnSinceInception
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 03, 1975
ING Global Natural Resources Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) as a % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge as a % of purchase or sales price, whichever is less	rr_MaximumDeferredSalesChargeOverOther	none
Management Fees	rr_ManagementFeesOverAssets	0.87%
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Administrative Services Fees	rr_Component1OtherExpensesOverAssets	0.10%
Other Expenses	rr_OtherExpensesOverAssets	0.20%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.17%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	none	[2]
Total Annual Fund Operating Expenses after Waivers and Reimbursements	rr_NetExpensesOverAssets	1.17%
1 Yr	rr_ExpenseExampleYear01	119
3 Yrs	rr_ExpenseExampleYear03	372
5 Yrs	rr_ExpenseExampleYear05	644
10 Yrs	rr_ExpenseExampleYear10	1,420
1 Yr	rr_ExpenseExampleNoRedemptionYear01	119
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	372
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	644
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	1,420
1 Yr	rr_AverageAnnualReturnYear01	(2.99%)
5 Yrs	rr_AverageAnnualReturnYear05	(2.91%)
10 Yrs	rr_AverageAnnualReturnYear10
since inception	rr_AverageAnnualReturnSinceInception	(0.02%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 01, 2007
ING Global Natural Resources Fund | Class W
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) as a % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge as a % of purchase or sales price, whichever is less	rr_MaximumDeferredSalesChargeOverOther	none
Management Fees	rr_ManagementFeesOverAssets	0.87%
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Administrative Services Fees	rr_Component1OtherExpensesOverAssets	0.10%
Other Expenses	rr_OtherExpensesOverAssets	0.34%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.31%
Waivers and Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	none	[2]
Total Annual Fund Operating Expenses after Waivers and Reimbursements	rr_NetExpensesOverAssets	1.31%
1 Yr	rr_ExpenseExampleYear01	133
3 Yrs	rr_ExpenseExampleYear03	415
5 Yrs	rr_ExpenseExampleYear05	718
10 Yrs	rr_ExpenseExampleYear10	1,579
1 Yr	rr_ExpenseExampleNoRedemptionYear01	133
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	415
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	718
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	1,579
1 Yr	rr_AverageAnnualReturnYear01	(3.19%)
5 Yrs	rr_AverageAnnualReturnYear05
10 Yrs	rr_AverageAnnualReturnYear10
since inception	rr_AverageAnnualReturnSinceInception	(1.43%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Feb. 12, 2008
ING Global Natural Resources Fund | After tax on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(9.07%)
5 Yrs	rr_AverageAnnualReturnYear05	(4.70%)
10 Yrs	rr_AverageAnnualReturnYear10	7.68%
since inception	rr_AverageAnnualReturnSinceInception
ING Global Natural Resources Fund | After tax on distributions with sale | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	(5.85%)
5 Yrs	rr_AverageAnnualReturnYear05	(3.81%)
10 Yrs	rr_AverageAnnualReturnYear10	7.27%
since inception	rr_AverageAnnualReturnSinceInception
ING Global Natural Resources Fund | S&P North American Natural Resources Sector Index | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	2.20%	[3]
5 Yrs	rr_AverageAnnualReturnYear05	(1.51%)	[3]
10 Yrs	rr_AverageAnnualReturnYear10	12.78%	[3]
since inception	rr_AverageAnnualReturnSinceInception		[3]
ING Global Natural Resources Fund | S&P North American Natural Resources Sector Index | Class I
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	2.20%	[3]
5 Yrs	rr_AverageAnnualReturnYear05	(1.51%)	[3]
10 Yrs	rr_AverageAnnualReturnYear10		[3]
since inception	rr_AverageAnnualReturnSinceInception	0.77%	[3],[4]
ING Global Natural Resources Fund | S&P North American Natural Resources Sector Index | Class W
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	2.20%	[3]
5 Yrs	rr_AverageAnnualReturnYear05		[3]
10 Yrs	rr_AverageAnnualReturnYear10		[3]
since inception	rr_AverageAnnualReturnSinceInception	0.42%	[3],[4]

[1] A contingent deferred sales charge of 1.00% is assessed on certain redemptions of Class A shares made within 18 months after purchase where no initial sales charge was paid at the time of purchase as part of an investment of $1 million or more.

[2] The adviser is contractually obligated to limit expenses to 2.00%, 1.75%, and 1.75% for Class A, Class I, and Class W shares, respectively, through March 1, 2014. The obligation will automatically renew for one-year terms unless it is terminated by the Fund or the adviser upon written notice within 90 days of the end of the current term or upon termination of the advisory agreement and is subject to possible recoupment by the adviser within three years. In addition, the adviser is contractually obligated to further limit expenses to 1.60%, 1.35%, and 1.35% for Class A, Class I, and Class W shares, respectively, through March 1, 2014. There is no guarantee that this obligation will continue after March 1, 2014 and the obligation will only continue if the adviser elects to renew it. Any fees waived pursuant to this obligation shall not be eligible for recoupment. These obligations do not extend to interest, taxes, brokerage commissions, extraordinary expenses, and Acquired Fund Fees and Expenses.

[3] The index returns do not reflect deductions for fees, expenses, or taxes.

[4] Reflects index performance since the date closest to the Class' inception for which data is available.