Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	AIM INVESTMENT FUNDS (INVESCO INVESTMENT FUNDS)
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013
Class R5 and R6 | Invesco Emerging Markets Equity Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summaries - INVESCO EMERGING MARKETS EQUITY FUND
Objective [Heading]	rr_ObjectiveHeading	Investment Objective(s)
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund’s investment objective is long-term growth of capital.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.
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)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	February 28, 2014
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 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 34% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	34.00%
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	“Other Expenses” and “Total Annual Fund Operating Expenses” for Class R6 are based on estimated amounts for the current fiscal year.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example.
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This 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 and then redeem all of your shares at the end of those periods. 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 Strategies of the Fund
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund invests, under normal circumstances, at least 80% of its net assets (plus any borrowings for investment purposes) in equity securities of issuers in emerging markets countries, i.e., those that are in the initial stages of their industrial cycles, and in other instruments that have economic characteristics similar to such securities. Emerging markets countries are those countries in the world other than the United States of America, Canada, Japan, Australia, New Zealand, Iceland, Norway, Switzerland, Hong Kong, Singapore, Israel and the developed countries of the European Union. A complete list of developed countries of the European Union can be found in the Fund's SAI. The Fund uses the following criteria to determine whether an issuer is in an emerging markets country, including whether (1) it is organized under the laws of an emerging markets country; (2) it has a principal office in an emerging markets country; (3) it derives 50% or more of its total revenues from business in an emerging markets country; or (4) its securities are trading principally on a security exchange, or in an over-the-counter market, in an emerging markets country. The Fund invests primarily in equity securities and depositary receipts. The principal types of equity securities in which the Fund invests are common and preferred stock. The Fund invests primarily in the securities of large-capitalization issuers; however, the Fund may invest a significant amount of its net assets in the securities of small- and mid-capitalization issuers. The Fund may invest up to 100% of its net assets in foreign securities, including securities of issuers located in emerging markets countries. In selecting securities for the Fund, the portfolio managers seek to identify attractively valued issuers with market capitalization in excess of $1 billion. Initial factors considered by the portfolio managers when evaluating potential investments include an issuer's price relative to its historic return on equity, book value, and earnings. Historic earnings stability and overall debt levels are also considered. In analyzing potential investments, the portfolio managers conduct research on issuers meeting their criteria and may communicate directly with management. The Fund's portfolio managers consider selling a security when (1) its share price increases and it is no longer deemed attractively valued relative to other issuers, (2) its fundamentals deteriorate or (3) it causes the portfolio's sector or regional weighting relative to its benchmark to fall outside acceptable risk parameters.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Fund
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are: Depositary Receipts Risk. Depositary receipts involve many of the same risks as those associated with direct investment in foreign securities. In addition, the underlying issuers of certain depositary receipts, particularly unsponsored or unregistered depositary receipts, are under no obligation to distribute shareholder communications to the holders of such receipts or to pass through to them any voting rights with respect to the deposited securities. Developing/Emerging Markets Securities Risk. The prices of securities issued by foreign companies and governments located in developing/emerging markets countries may be affected more negatively by inflation, devaluation of their currencies, higher transaction costs, delays in settlement, adverse political developments, the introduction of capital controls, withholding taxes, nationalization of private assets, expropriation, social unrest, war or lack of timely information than those in developed countries. Foreign Securities Risk. The Fund's foreign investments may be affected by changes in a foreign country's exchange rates, political and social instability, changes in economic or taxation policies, difficulties when enforcing obligations, decreased liquidity, and increased volatility. Foreign companies may be subject to less regulation resulting in less publicly available information about the companies. Geographic Focus Risk. From time to time the Fund may invest a substantial amount of its assets in securities of issuers located in a single country or a limited number of countries. If the Fund focuses its investments in this manner, it assumes the risk that economic, political and social conditions in those countries will have a significant impact on its investment performance. The Fund's investment performance may also be more volatile if it focuses its investments in certain countries, especially emerging markets countries. Management Risk. The investment techniques and risk analysis used by the Fund's portfolio managers may not produce the desired results. Market Risk. The prices of and the income generated by the Fund's securities may decline in response to, among other things, investor sentiment, general economic and market conditions, regional or global instability, and currency and interest rate fluctuations. Small- and Mid-Capitalization Risks. Stocks of small- and mid-sized companies tend to be more vulnerable to adverse developments and may have little or no operating history or track record of success, and limited product lines, markets, management and financial resources. The securities of small- and mid-sized companies may be more volatile due to less market interest and less publicly available information about the issuer. They also may be illiquid or restricted as to resale, or may trade less frequently and in smaller volumes, all of which may cause difficulty when establishing or closing a position at a desirable price.
Risk Lose Money [Text]	rr_RiskLoseMoney	As with any mutual fund investment, loss of money is a risk of investing.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The performance table compares the Fund’s performance to that of a broad-based securities market benchmark, a style specific benchmark and a peer group benchmark comprised of funds with investment objectives and strategies similar to the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. Updated performance information is available on the Fund’s Web site at www.invesco.com/us.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The performance table compares the Fund’s performance to that of a broad-based securities market benchmark, a style specific benchmark and a peer group benchmark comprised of funds with investment objectives and strategies similar to the Fund.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.invesco.com/us
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance.
Bar Chart [Heading]	rr_BarChartHeading	Annual Total Returns
2012	rr_AnnualReturn2012	10.19%
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best Quarter (ended March 31, 2012): 12.18% Worst Quarter (ended June 30, 2012): -10.37%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2012
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	12.18%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Jun. 30, 2012
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(10.37%)
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2012)
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 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 R5 shares only and after-tax returns for other classes will vary.
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 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. After-tax returns are shown for Class R5 shares only and after-tax returns for other classes will vary.
Class R5 and R6 | Invesco Emerging Markets Equity Fund | Class R5
Risk/Return:	rr_RiskReturnAbstract
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 original purchase price or redemption proceeds, whichever is less)	rr_MaximumDeferredSalesChargeOverOther	none
Management Fees	rr_ManagementFeesOverAssets	0.94%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	1.96%	[1]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.06%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.96%	[1]
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	1.30%	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.66%
1 Year	rr_ExpenseExampleYear01	169
3 Years	rr_ExpenseExampleYear03	793
5 Years	rr_ExpenseExampleYear05	1,443
10 Years	rr_ExpenseExampleYear10	3,188
1 Year	rr_AverageAnnualReturnYear01	10.19%
Since Inception	rr_AverageAnnualReturnSinceInception	(11.33%)
Inception Date	rr_AverageAnnualReturnInceptionDate	May 31, 2011
Class R5 and R6 | Invesco Emerging Markets Equity Fund | Class R6
Risk/Return:	rr_RiskReturnAbstract
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 original purchase price or redemption proceeds, whichever is less)	rr_MaximumDeferredSalesChargeOverOther	none
Management Fees	rr_ManagementFeesOverAssets	0.94%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	1.96%	[1]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.06%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.96%	[1]
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	1.30%	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.66%
1 Year	rr_ExpenseExampleYear01	169
3 Years	rr_ExpenseExampleYear03	793
5 Years	rr_ExpenseExampleYear05	1,443
10 Years	rr_ExpenseExampleYear10	3,188
1 Year	rr_AverageAnnualReturnYear01	9.90%	[3]
Since Inception	rr_AverageAnnualReturnSinceInception	(11.52%)	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 24, 2012	[3]
Class R5 and R6 | Invesco Emerging Markets Equity Fund | Return After Taxes on Distributions | Class R5
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	9.98%
Since Inception	rr_AverageAnnualReturnSinceInception	(11.64%)
Inception Date	rr_AverageAnnualReturnInceptionDate	May 31, 2011
Class R5 and R6 | Invesco Emerging Markets Equity Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class R5
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	6.89%
Since Inception	rr_AverageAnnualReturnSinceInception	(9.67%)
Inception Date	rr_AverageAnnualReturnInceptionDate	May 31, 2011
Class R5 and R6 | Invesco Emerging Markets Equity Fund | MSCI EAFE® Index
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	17.32%
Since Inception	rr_AverageAnnualReturnSinceInception	(1.93%)
Class R5 and R6 | Invesco Emerging Markets Equity Fund | MSCI Emerging Markets Index℠
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	18.22%
Since Inception	rr_AverageAnnualReturnSinceInception	(3.75%)
Class R5 and R6 | Invesco Emerging Markets Equity Fund | Lipper Emerging Market Funds Index
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	20.08%
Since Inception	rr_AverageAnnualReturnSinceInception	(2.31%)

[1] "Other Expenses" and "Total Annual Fund Operating Expenses" for Class R6 are based on estimated amounts for the current fiscal year.

[2] Invesco Advisers, Inc. (Invesco or the Adviser) has contractually agreed, through at least February 28, 2014, to waive advisory fees and/or reimburse expenses to the extent necessary to limit Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement (excluding certain items discussed in the SAI) of each of Class R5 and R6 shares to 1.60% of average daily net assets. Acquired Fund Fees and Expenses are also excluded in determining such obligation. Unless the Board of Trustees and Invesco mutually agree to amend or continue the fee waiver agreement, it will terminate on February 28, 2014.

[3] Class R6 shares' performance shown prior to the inception date is that of the Class A shares, and includes the 12b-1 fees applicable to Class A shares. Class A shares' performance reflects any applicable fee waivers and/or expense reimbursements. The inception date of the Fund's Class A shares is May 31, 2011.