Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	AIM GROWTH SERIES (INVESCO GROWTH SERIES)
Prospectus Date	rr_ProspectusDate	Apr. 29, 2013
Class R5 Prospectus | INVESCO U.S. MORTGAGE FUND
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary
Objective [Heading]	rr_ObjectiveHeading	Investment Objective(s)
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund's investment objective is to provide a high level of current income, with liquidity and safety of principal.
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 451% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	451.00%
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 mortgage-backed securities of any maturity or type guaranteed by, or secured by collateral that is guaranteed by, the U.S. government, its agencies, instrumentalities or sponsored corporations (a Federal Agency), and in mortgage-backed securities privately issued in the United States, and in derivatives and other instruments that have economic characteristics similar to such securities.       Mortgage-backed securities generally consist of government mortgage pass-through securities, collateralized mortgage obligations (CMOs), multiclass pass-through securities, private mortgage pass-through securities, stripped mortgage securities and inverse floaters. The Fund historically has invested substantially all of its assets in mortgage-backed securities that directly or indirectly represent a participation in, or are secured by and payable from, mortgage loans secured by real property. Mortgage-backed securities also include mortgage pass-through certificates representing participation interests in pools of mortgage loans originated by the U.S. government or private lenders and guaranteed by U.S. government agencies such as the Government National Mortgage Association (GNMA), the Federal National Mortgage Association (FNMA) or the Federal Home Loan Mortgage Corporation (FHLMC).       The Fund may invest in real estate mortgage investment conduits (REMICs) and CMOs.       The Fund may invest in stripped mortgage securities, which are derivative multi-class mortgage securities.       The Fund is authorized to borrow money from banks and engage in dollar roll transactions in an aggregate amount up to 331/3% of its total assets (including amount borrowed) with no more than 5% of such amount from bank borrowings. The use of such transactions to purchase additional securities is known as leverage.       The Fund may invest in illiquid or thinly traded securities. The Fund may also invest in securities that are subject to resale restrictions such as those contained in Rule 144A promulgated under the Securities Act of 1933. The Fund's investments may include securities that do not produce immediate cash income, such as zero coupon securities and payment-in-kind securities.       The Fund may purchase and sell securities on a when-issued and delayed delivery basis, which means that the Fund may buy or sell a security with payment and delivery taking place in the future. The Fund may also engage in "to be announced" (TBA) transactions, which are transactions in which a fund buys or sells mortgage-backed securities on a forward commitment basis.       The Fund can invest in derivative instruments including futures contracts and swap contracts.       The Fund can use futures contracts, including interest rate futures, to increase or reduce its exposure to changes in interest rates.       The Fund can use swap contracts, including interest rate swaps, to hedge or adjust the Fund's exposure to interest rates.       The Fund utilizes active duration and yield curve positioning for risk management and for generating alpha (return on investments in excess of the Barclays U.S. Mortgage-Backed Securities Index).       The portfolio managers utilize the Barclays U.S. Mortgage-Backed Securities Index as a reference in structuring the portfolio. The portfolio managers decide on appropriate risk factors such as duration, the shape of the U.S. Treasury yield curve, Federal Agency exposure, Federal Agency mortgage-backed security exposure, and Treasury Inflation-Protected Security (TIPS) exposure relative to this index. The portfolio managers then employ proprietary technology to calculate appropriate position sizes for each of these risk factors. In doing so, the portfolio managers consider recommendations from a globally interconnected team of specialist decision makers in positioning the Fund to generate alpha.       The portfolio managers generally rely upon a team of market-specific specialists for trade execution and for assistance in determining efficient ways (in terms of cost-efficiency and selection) to implement those recommendations. Specialist investment professionals employ both top down and bottom-up analysis in determining larger or smaller exposure to specific risk factors. In general, these specialists will look for attractive risk-reward opportunities and securities that best enable the Fund to pursue those opportunities. The portfolio managers consider the recommendations of these market-specific specialists in adjusting the Fund's risk exposures and security selection on a real-time basis using proprietary communication technology. Although a variety of specialists provide input in the management of the Fund, the portfolio managers retain responsibility for ensuring the Fund is positioned appropriately in terms of risk exposures and position sizes.       Specialists employ a bottom-up approach to recommend larger or smaller exposure to specific risk factors. In general, specialists will look for attractive risk-reward opportunities and securities that best enable the Fund to pursue those opportunities. The portfolio managers consider the recommendations of these market-specific specialists in adjusting the Fund's risk exposures and security selection on a real-time basis using proprietary communication technology.       Decisions to purchase or sell securities are determined by the relative value considerations of the investment professionals that factor in economic and credit-related fundamentals, market supply and demand, market dislocations and situation-specific opportunities. The purchase or sale of securities may be related to a decision to alter the Fund's macro risk exposure (such as duration, yield curve positioning and sector exposure), a need to limit or reduce the Fund's exposure to a particular security or issuer, degradation of an issuer's credit quality or general liquidity needs of the Fund.       In attempting to meet its investment objective, the Fund engages in active and frequent trading of portfolio securities.
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:       Active Trading Risk. The Fund engages in frequent trading of portfolio securities. Active trading results in added expenses and may result in a lower return and increased tax liability.       Credit Risk. The issuer of instruments in which the Fund invests may be unable to meet interest and/or principal payments, thereby causing its instruments to decrease in value and lowering the issuer's credit rating.       Derivatives Risk. The performance of derivative instruments is tied to the performance of an underlying currency, security, index, commodity 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 Adviser elects not to do so due to availability, cost, market conditions or other factors.       TBA Transactions Risk. TBA transactions involve the risk that the securities received may be less favorable than what was anticipated by the Fund when entering into the TBA transaction. TBA transactions also involve the risk that a counterparty will fail to deliver the security, exposing the Fund to further losses. Whether or not the Fund takes delivery of the securities at the termination date of a TBA transaction, the Fund will nonetheless be exposed to changes in the value of the underlying investments during the term of the agreement.       Leverage Risk. Leverage exists when the Fund purchases or sells an instrument or enters into a transaction without investing cash in an amount equal to the full economic exposure of the instrument or transaction and the Fund could lose more than it invested. Leverage created from borrowing or certain types of transactions or instruments may impair the Fund's liquidity, cause it to liquidate positions at an unfavorable time, increase volatility or otherwise not achieve its intended objective.       Income Risk. The income you receive from the Fund is based primarily on prevailing interest rates, which can vary widely over the short- and long-term. If interest rates drop, your income from the Fund may drop as well.       Liquidity Risk. The Fund may hold illiquid securities that it is unable to sell at the preferred time or price and could lose its entire investment in such securities.        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.       Mortgage-and Asset-Backed Securities Risk. The Fund may invest in mortgage- and asset-backed securities that are subject to prepayment or call risk, which is the risk that the borrower's payments may be received earlier or later than expected due to changes in prepayment rates on underlying loans. Faster prepayments often happen when interest rates are falling. As a result, the Fund may reinvest these early payments at lower interest rates, thereby reducing the Fund's income. Conversely, when interest rates rise, prepayments may happen more slowly, causing the security to lengthen in duration. Longer duration securities tend to be more volatile. Securities may be prepaid at a price less than the original purchase value. An unexpectedly high rate of defaults on the mortgages held by a mortgage pool may adversely affect the value of mortgage-backed securities and could result in losses to the Fund. The risk of such defaults is generally higher in the case of mortgage pools that include subprime mortgages. Subprime mortgages refer to loans made to borrowers with weakened credit histories or with lower capacity to make timely payments on their mortgages.       U.S. Government Obligations Risk. The Fund may invest in obligations issued by U.S. Government agencies and instrumentalities that may receive varying levels of support from the government, which could affect the Fund's ability to recover should they default.       When-Issued and Delayed Delivery Risks. When-issued and delayed delivery transactions are subject to market risk as the value or yield of a security at delivery may be more or less than the purchase price or the yield generally available on securities when delivery occurs. In addition, the Fund is subject to counterparty risk because it relies on the buyer or seller, as the case may be, to consummate the transaction, and failure by the other party to complete the transaction may result in the Fund missing the opportunity of obtaining a price or yield considered to be advantageous.       Zero Coupon or Pay-In-Kind Securities Risk. The value, interest rates, and liquidity of non-cash paying instruments, such as zero coupon and pay-in-kind securities, are subject to greater fluctuation than other types of securities.
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 and a style specific benchmark. The Fund's and Van Kampen U.S. Mortgage Fund's (the predecessor fund's) past performance (before and after taxes) is not necessarily an indication of its future performance.       The returns shown prior to June 1, 2010 are those of the Class A shares of the predecessor fund. The predecessor fund was advised by Van Kampen Asset Management. Class R5 shares' returns of the Fund will be different from the predecessor fund as they have different expenses.       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 and a style specific benchmark.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.invesco.com/us
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund's and Van Kampen U.S. Mortgage Fund's (the predecessor 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 year-to-date (ended March 28, 2013): 0.22% Best Quarter (ended September 30, 2012): 2.20% Worst Quarter (ended December 31, 2012): -0.16%
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 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.
Class R5 Prospectus | INVESCO U.S. MORTGAGE 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	0.47%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.18%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.65%
1 Year	rr_ExpenseExampleYear01	66
3 Years	rr_ExpenseExampleYear03	208
5 Years	rr_ExpenseExampleYear05	362
10 Years	rr_ExpenseExampleYear10	810
2011	rr_AnnualReturn2011	5.38%
2012	rr_AnnualReturn2012	4.80%
Year to Date Return, Label	rr_YearToDateReturnLabel	Class R5 year-to-date
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 28, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	0.22%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2012
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	2.20%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2012
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(0.16%)
1 Year	rr_AverageAnnualReturnYear01	4.80%	[1]
5 Years	rr_AverageAnnualReturnYear05	4.14%	[1]
10 Years	rr_AverageAnnualReturnYear10	3.87%	[1]
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 01, 2010	[1]
Class R5 Prospectus | INVESCO U.S. MORTGAGE FUND | Return After Taxes on Distributions | Class R5
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.18%	[1]
5 Years	rr_AverageAnnualReturnYear05	2.55%	[1]
10 Years	rr_AverageAnnualReturnYear10	2.09%	[1]
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 01, 2010	[1]
Class R5 Prospectus | INVESCO U.S. MORTGAGE FUND | Return After Taxes on Distributions and Sale of Fund Shares | Class R5
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.10%	[1]
5 Years	rr_AverageAnnualReturnYear05	2.59%	[1]
10 Years	rr_AverageAnnualReturnYear10	2.23%	[1]
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 01, 2010	[1]
Class R5 Prospectus | INVESCO U.S. MORTGAGE FUND | Bank of America Merrill Lynch 1-10 Year Treasury Index (reflects no deduction for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	1.87%
5 Years	rr_AverageAnnualReturnYear05	4.66%
10 Years	rr_AverageAnnualReturnYear10	4.12%
Class R5 Prospectus | INVESCO U.S. MORTGAGE FUND | Barclays U.S. Mortgage-Backed Securities Index (reflects no deduction for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.59%
5 Years	rr_AverageAnnualReturnYear05	5.67%
10 Years	rr_AverageAnnualReturnYear10	5.08%

[1] Class R5 shares' performance shown prior to the inception date is that of the predecessor fund's Class A shares and includes the 12b-1 fees applicable to Class A shares. The inception date of the predecessor fund's Class A shares is May 31, 1984.