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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName AIM GROWTH SERIES (INVESCO GROWTH SERIES)
Prospectus Date rr_ProspectusDate Sep. 24, 2012
INVESCO Mid Cap Core Equity Fund
  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Fund Summaries - INVESCO MID CAP CORE 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)
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 57% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 57.00%
Other Expenses, New Fund, Based on Estimates [Text] rr_OtherExpensesNewFundBasedOnEstimates “Other Expenses” and “Total Annual Fund Operating Expenses” for Class R6 shares 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 mid-capitalization companies. In complying with the 80% investment requirement, the Fund may include synthetic securities that have economic characteristics similar to the Fund’s direct investments that are counted toward the 80% investment requirement.

      The Fund considers a company to be a mid-capitalization company if it has a market capitalization, at the time of purchase, within the range of the largest and smallest capitalized companies included in the Russell Midcap® Index during the most recent 11-month period (based on month-end data) plus the most recent data during the current month. As of January 31, 2012, the capitalization of companies in the Russell Midcap® Index ranged from $108 million to $20.7 billion.

      The Fund may invest up to 25% of its total assets in foreign securities.

      The Fund can invest in derivatives, including forward foreign currency contracts and index futures.

      Index futures can be used to gain exposure to the broad market by equitizing cash and as a hedge against downside risk. A stock index futures contract is an exchange-traded contract that provides for the delivery, at a designated date, time and place, of an amount of cash equal to a specified dollar amount times the difference between the stock index value at the close of trading on the date specified in the contract and the price agreed upon in the futures contract; no physical delivery of stocks comprising the index is made.

      The Fund can utilize forward foreign currency contracts to mitigate the risk of foreign currency exposure. A forward foreign currency contract is an agreement between parties to exchange a specified amount of currency at a specified future time at a specified rate. Forward foreign currency contracts are used to protect against uncertainty in the level of future currency exchange rates or to gain or modify exposure to a particular currency. The Fund will use these contracts to hedge against adverse movements in the foreign currencies in which portfolio securities are denominated.

      In selecting securities for the Fund, the portfolio managers conduct fundamental research of issuers to gain a thorough understanding of their business prospects, appreciation potential and return on invested capital (ROIC). The process they use to identify potential investments for the Fund includes three phases: financial analysis, business analysis and valuation analysis. The portfolio managers will generally invest in an issuer when they have determined it potentially has high or improving ROIC, quality management, a strong competitive position and is trading at an attractive valuation.

      The portfolio managers consider selling a security when it exceeds the target price, has not shown a demonstrable improvement in fundamentals or a more compelling investment opportunity exists.

      The Fund employs a risk management strategy to help minimize loss of capital and reduce excessive volatility. Pursuant to this strategy, the Fund generally invests a substantial amount of its assets in cash and cash equivalents. As a result, the Fund may not achieve its investment objective.
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:

      Cash/Cash Equivalents Risk. Holding cash or cash equivalents may negatively affect performance.

      Derivatives Risk. The performance of derivative instruments is tied to the performance of an underlying currency, security, index or other instrument. In addition to risks relating to their underlying instruments, the use of derivatives may include other, possibly greater, risks. Derivatives involve costs, may be volatile, and may involve a small initial investment relative to the risk assumed. Risks associated with the use of derivatives may include counterparty, leverage, correlation, liquidity, tax, market, interest rate and management risks. Derivatives may also be more difficult to purchase, sell or value than other investments. The Fund may lose more than the cash amount invested on investments in derivatives. Investors should bear in mind that, while the Fund intends to use derivative strategies, it is not obligated to actively engage in these transactions, generally or in any particular kind of derivative, if the investment manager elects not to do so due to availability, cost, market conditions or other factors.

      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.

      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.

      Synthetic Securities Risk. Fluctuations in the values of synthetic securities may not correlate perfectly with the instruments they are designed to replicate. Synthetic securities may be subject to interest rate changes, market price fluctuations, counterparty risk and liquidity risk.
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
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Class R5 shares year-to-date (ended June 30, 2012): 4.18%
Best Quarter (ended June 30, 2009): 17.03%
Worst Quarter (ended December 31, 2008): -21.34%
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns (for the periods ended December 31, 2011)
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 arrangement, such as 401(k) plans or individual retirement accounts.
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 arrangement, such as 401(k) plans or individual retirement accounts.
INVESCO Mid Cap Core 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 0.68%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.14% [1]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.82% [1]
1 Year rr_ExpenseExampleYear01 84
3 Years rr_ExpenseExampleYear03 262
5 Years rr_ExpenseExampleYear05 455
10 Years rr_ExpenseExampleYear10 1,014
2003 rr_AnnualReturn2003 28.02%
2004 rr_AnnualReturn2004 14.40%
2005 rr_AnnualReturn2005 7.92%
2006 rr_AnnualReturn2006 11.62%
2007 rr_AnnualReturn2007 10.33%
2008 rr_AnnualReturn2008 (27.19%)
2009 rr_AnnualReturn2009 30.84%
2010 rr_AnnualReturn2010 12.94%
2011 rr_AnnualReturn2011 (5.87%)
Year to Date Return, Label rr_YearToDateReturnLabel Class R5 shares year-to-date
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2012
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 4.18%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 17.03%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (21.34%)
1 Year rr_AverageAnnualReturnYear01 (5.87%)
5 Years rr_AverageAnnualReturnYear05 2.24%
10 Years rr_AverageAnnualReturnYear10   
Since Inception rr_AverageAnnualReturnSinceInception 5.42%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 15, 2002
INVESCO Mid Cap Core 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 0.68%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.05% [1]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.73% [1]
1 Year rr_ExpenseExampleYear01 75
3 Years rr_ExpenseExampleYear03 233
5 Years rr_ExpenseExampleYear05 406
10 Years rr_ExpenseExampleYear10 906
1 Year rr_AverageAnnualReturnYear01 (6.24%) [2]
5 Years rr_AverageAnnualReturnYear05 1.83% [2]
10 Years rr_AverageAnnualReturnYear10 5.33% [2]
Since Inception rr_AverageAnnualReturnSinceInception    [2]
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 24, 2012
INVESCO Mid Cap Core Equity Fund | Return After Taxes on Distributions | Class R5
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 (6.30%)
5 Years rr_AverageAnnualReturnYear05 1.31%
10 Years rr_AverageAnnualReturnYear10   
Since Inception rr_AverageAnnualReturnSinceInception 4.35%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 15, 2002
INVESCO Mid Cap Core Equity Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class R5
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 (3.22%)
5 Years rr_AverageAnnualReturnYear05 1.82%
10 Years rr_AverageAnnualReturnYear10   
Since Inception rr_AverageAnnualReturnSinceInception 4.56%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 15, 2002
INVESCO Mid Cap Core Equity Fund | S&P 500 Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 2.09%
5 Years rr_AverageAnnualReturnYear05 (0.25%)
10 Years rr_AverageAnnualReturnYear10 2.92%
Since Inception rr_AverageAnnualReturnSinceInception   
INVESCO Mid Cap Core Equity Fund | Russell Midcap Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 (1.55%)
5 Years rr_AverageAnnualReturnYear05 1.41%
10 Years rr_AverageAnnualReturnYear10 6.99%
Since Inception rr_AverageAnnualReturnSinceInception   
INVESCO Mid Cap Core Equity Fund | Lipper Mid-Cap Core Funds Index
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 (5.65%)
5 Years rr_AverageAnnualReturnYear05 1.28%
10 Years rr_AverageAnnualReturnYear10 5.60%
Since Inception rr_AverageAnnualReturnSinceInception   
[1] "Other Expenses" and "Total Annual Fund Operating Expenses" for Class R6 shares are based on estimated amounts for the current fiscal year.
[2] 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 June 9, 1987.