acsaa20130809_485bpos.htm

rr_RiskReturnAbstract

Document Type

dei_DocumentType

485BPOS

Document Period End Date

dei_DocumentPeriodEndDate

Nov. 30, 2012

Registrant Name

dei_EntityRegistrantName

AMERICAN CENTURY STRATEGIC ASSET ALLOCATIONS INC

Central Index Key

dei_EntityCentralIndexKey

0000924211

Amendment Flag

dei_AmendmentFlag

false

Trading Symbol

dei_TradingSymbol

ACSAA

Document Creation Date

dei_DocumentCreationDate

Jul. 25, 2013

Document Effective Date

dei_DocumentEffectiveDate

Jul. 26, 2013

Prospectus Date

rr_ProspectusDate

Jul. 26, 2013

STRATEGIC ALLOCATION: CONSERVATIVE FUND

Objective, Primary [Text Block]

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

RISK/RETURN

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

rr_ObjectivePrimaryTextBlock

The fund is an asset allocation fund. That is, it diversifies its assets among various classes of investments such as equity securities, bonds and money market instruments. The fund seeks the highest level of total return consistent with its asset mix.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The following table describes the fees and expenses 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 American Century Investments funds. More information about these and other discounts, as well as variations in charges that may apply to purchases of $1 million or more, is available from your financial professional and in Calculation of Sales Charges on page 22 of the fund's prospectus and Sales Charges in Appendix B of the statement of additional information. The fund's B Class shares are not available for purchase, except through exchanges and dividend reinvestments.

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 76% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

76.00%

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 American Century Investments funds. More information about these and other discounts, as well as variations in charges that may apply to purchases of $1 million or more, is available from your financial professional and in Calculation of Sales Charges on page 22 of the fund's prospectus and Sales Charges in Appendix B of the statement of additional information.

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 below is intended to help you compare the costs of investing in the fund with the costs of investing in other mutual funds.

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

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 (unless otherwise indicated), that you earn 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

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The fund's asset allocation strategy diversifies investments among equity securities, bonds and money market instruments. Strategic Allocation: Conservative seeks regular income through its emphasis on bonds and money market securities. It also has the potential for moderate long-term total return as a result of its stake in equity securities. The following table indicates the fund's neutral mix, that is, how the fund's investments generally will be allocated among the major asset classes over the long term. The table also shows the operating ranges within which the fund's asset mix generally will vary over short-term periods.

	Equity Securities (Stocks)	Fixed-Income or Debt Securities (Bonds)	Cash Equivalents (Money Markets)
Neutral Mix	45%	47%	8%
Operating Range	39-51%	38-52%	5-20%

The fund may invest in any type of U.S. or foreign equity security that meets certain fundamental and technical standards. The portfolio managers draw on growth, value and quantitative investment techniques in managing the equity portion of the fund's portfolio, and they diversify the fund's equity investments among small, medium and large companies.

The fund also invests in a variety of debt securities payable in U.S. and foreign currencies. The fixed-income portion of the fund invests in investment-grade debt securities. An investment-grade security is one that has been rated by at least one independent rating agency in its top four credit quality categories or determined by the advisor to be of comparable credit quality.

Responsibility for research, stock selection and portfolio construction for specified portions of the fund has been allocated among portfolio teams representing various investment disciplines and strategies employed by other American Century funds.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

•	Allocation Risk - The fund's ability to achieve its investment objective depends in part on the managers' skill in determining the fund's asset class allocations and in selecting and weighting investments within each class. The managers' evaluations and assumptions regarding asset classes and investments may differ from actual market conditions.
•	Small- and Mid-Cap Stock Risks - Stocks of smaller companies can be more volatile than larger-company stocks. Smaller companies may have limited financial resources, product lines and markets, and their securities may trade less frequently and in more limited volumes than the securities of larger companies, which could lead to higher transaction costs. To the extent the fund invests in these companies, it may take on more risk.
•	"Growth" and "Value" Style Risks - The fund employs a mix of investment styles, each of which has risks associated with it. Growth stocks can be volatile and may lack dividends that can cushion share prices during market declines. Value stocks may continue to be undervalued by the market for long periods of time.
•	Interest Rate Risk - Generally, when interest rates rise, the value of the fund's fixed-income securities will decline. The opposite is true when interest rates decline.
•	Credit Risk - The value of the fund's fixed-income securities will be affected adversely by the inability or perceived inability of the issuers of these securities to make interest and principal payments as they become due.
•	Prepayment Risk - The fund may invest in debt securities backed by mortgages or other assets. If these underlying assets are prepaid, the fund may benefit less from declining interest rates than funds of similar maturity that invest less heavily in mortgage- and asset-backed securities.
•	Foreign Risk - The fund may invest in foreign securities, which may be riskier than investing in U.S. securities. Securities of foreign issuers may be less liquid, more volatile and harder to value than U.S. securities. Fluctuations in currency exchange rates also may affect the fund's share price.
•	Market Risk - The value of the fund's shares will go up and down based on the performance of the companies whose securities it owns and other factors generally affecting the securities market.
•	Principal Loss - At any given time your shares may be worth less than the price you paid for them. In other words, it is possible to lose money by investing in the fund.

An investment in the fund is not a bank deposit, and it is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.

Risk Lose Money [Text]

rr_RiskLoseMoney

Principal Loss - At any given time your shares may be worth less than the price you paid for them. In other words, it is possible to lose money by investing in the fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the fund is not a bank deposit, and it is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund 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 fund's performance from year to year for Investor Class shares. The table shows how the fund's average annual returns for the periods shown compared with those of a broad measure of market performance. Because the R6 Class is new, it is not included. The fund's past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. For current performance information, including yields, please visit americancentury.com.

Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

americancentury.com

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

Calendar Year Total Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Performance Quarter (3Q 2009): 8.56%

Lowest Performance Quarter (4Q 2008): -7.82%

As of June 30, 2013, the most recent calendar quarter end, the fund's Investor Class year-to-date return was 3.02%.

Year to Date Return, Label

rr_YearToDateReturnLabel

Investor Class year-to-date return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

3.02%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Performance Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

8.56%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Performance Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(7.82%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the calendar year 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. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

The after-tax returns are shown only for Investor Class shares. After-tax returns for 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 an investor's tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs.

STRATEGIC ALLOCATION: CONSERVATIVE FUND | INVESTOR CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

rr_ManagementFeesOverAssets

0.99%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

1.00%

rr_ExpenseExampleYear01

102

rr_ExpenseExampleYear03

319

rr_ExpenseExampleYear05

553

rr_ExpenseExampleYear10

1,225

Annual Return 2003

rr_AnnualReturn2003

14.75%

Annual Return 2004

rr_AnnualReturn2004

7.66%

Annual Return 2005

rr_AnnualReturn2005

3.91%

Annual Return 2006

rr_AnnualReturn2006

8.94%

Annual Return 2007

rr_AnnualReturn2007

7.56%

Annual Return 2008

rr_AnnualReturn2008

(15.76%)

Annual Return 2009

rr_AnnualReturn2009

14.54%

Annual Return 2010

rr_AnnualReturn2010

9.70%

Annual Return 2011

rr_AnnualReturn2011

3.42%

Annual Return 2012

rr_AnnualReturn2012

9.58%

rr_AverageAnnualReturnYear01

9.58%

rr_AverageAnnualReturnYear05

3.70%

rr_AverageAnnualReturnYear10

6.07%

rr_AverageAnnualReturnInceptionDate

Feb. 15, 1996

STRATEGIC ALLOCATION: CONSERVATIVE FUND | INSTITUTIONAL CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

0.79%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

0.80%

rr_ExpenseExampleYear01

rr_ExpenseExampleYear03

256

rr_ExpenseExampleYear05

445

rr_ExpenseExampleYear10

990

rr_AverageAnnualReturnYear01

9.79%

rr_AverageAnnualReturnYear05

3.90%

rr_AverageAnnualReturnYear10

6.26%

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2000

STRATEGIC ALLOCATION: CONSERVATIVE FUND | A CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

0.99%

rr_DistributionAndService12b1FeesOverAssets

0.25%

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

1.25%

rr_ExpenseExampleYear01

695

rr_ExpenseExampleYear03

949

rr_ExpenseExampleYear05

1,223

rr_ExpenseExampleYear10

1,999

rr_AverageAnnualReturnYear01

2.96%

^[1]

rr_AverageAnnualReturnYear05

2.22%

^[1]

rr_AverageAnnualReturnYear10

5.18%

^[1]

rr_AverageAnnualReturnInceptionDate

Oct. 02, 1996

^[1]

STRATEGIC ALLOCATION: CONSERVATIVE FUND | B CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

5.00%

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

0.99%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

2.00%

rr_ExpenseExampleYear01

603

rr_ExpenseExampleYear03

928

rr_ExpenseExampleYear05

1,179

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleYear10

2,132

rr_ExpenseExampleNoRedemptionYear01

203

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

628

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,079

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,132

rr_AverageAnnualReturnYear01

4.56%

rr_AverageAnnualReturnYear05

2.50%

rr_AverageAnnualReturnSinceInception

4.30%

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2004

STRATEGIC ALLOCATION: CONSERVATIVE FUND | C CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

1.00%

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

0.99%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

2.00%

rr_ExpenseExampleYear01

203

rr_ExpenseExampleYear03

628

rr_ExpenseExampleYear05

1,079

rr_ExpenseExampleYear10

2,324

rr_AverageAnnualReturnYear01

8.36%

rr_AverageAnnualReturnYear05

2.64%

rr_AverageAnnualReturnSinceInception

4.29%

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2004

STRATEGIC ALLOCATION: CONSERVATIVE FUND | R CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

0.99%

rr_DistributionAndService12b1FeesOverAssets

0.50%

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

1.50%

rr_ExpenseExampleYear01

153

rr_ExpenseExampleYear03

475

rr_ExpenseExampleYear05

819

rr_ExpenseExampleYear10

1,789

rr_AverageAnnualReturnYear01

9.04%

rr_AverageAnnualReturnYear05

3.19%

rr_AverageAnnualReturnSinceInception

4.59%

rr_AverageAnnualReturnInceptionDate

Mar. 31, 2005

STRATEGIC ALLOCATION: CONSERVATIVE FUND | R6 CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

0.64%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

0.65%

rr_ExpenseExampleYear01

rr_ExpenseExampleYear03

208

rr_ExpenseExampleYear05

363

rr_ExpenseExampleYear10

811

STRATEGIC ALLOCATION: CONSERVATIVE FUND | Return After Taxes on Distributions | INVESTOR CLASS

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

8.66%

rr_AverageAnnualReturnYear05

3.04%

rr_AverageAnnualReturnYear10

5.05%

rr_AverageAnnualReturnInceptionDate

Feb. 15, 1996

STRATEGIC ALLOCATION: CONSERVATIVE FUND | Return After Taxes on Distributions and Sale of Fund Shares | INVESTOR CLASS

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

7.07%

rr_AverageAnnualReturnYear05

2.93%

rr_AverageAnnualReturnYear10

4.85%

rr_AverageAnnualReturnInceptionDate

Feb. 15, 1996

STRATEGIC ALLOCATION: CONSERVATIVE FUND | S&P 500® Index (reflects no deductions for fees, expenses or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

16.00%

rr_AverageAnnualReturnYear05

1.66%

rr_AverageAnnualReturnYear10

7.10%

STRATEGIC ALLOCATION: CONSERVATIVE FUND | Barclays U.S. Aggregate Bond Index (reflects no deductions for fees, expenses or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

4.21%

rr_AverageAnnualReturnYear05

5.95%

rr_AverageAnnualReturnYear10

5.18%

STRATEGIC ALLOCATION: CONSERVATIVE FUND | Barclays U.S. 1-3 Month Treasury Bill Index (reflects no deductions for fees, expenses or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

0.08%

rr_AverageAnnualReturnYear05

0.44%

rr_AverageAnnualReturnYear10

1.69%

STRATEGIC ALLOCATION: MODERATE FUND

Objective, Primary [Text Block]

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

RISK/RETURN

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

rr_ObjectivePrimaryTextBlock

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

78.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

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 below is intended to help you compare the costs of investing in the fund with the costs of investing in other mutual funds.

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The fund's asset allocation strategy diversifies investments among equity securities, bonds and money market instruments. Strategic Allocation: Moderate seeks long-term capital growth with some regular income. It emphasizes investments in equity securities but maintains a sizeable stake in bonds and money market securities. The following table indicates the fund's neutral mix, that is, how the fund's investments generally will be allocated among the major asset classes over the long term. The table also shows the operating ranges within which the fund's asset mix generally will vary over short-term periods.

	Equity Securities (Stocks)	Fixed-Income or Debt Securities (Bonds)	Cash Equivalents (Money Markets)
Neutral Mix	64%	31%	5%
Operating Range	53-73%	21-41%	0-15%

The fund also invests in a variety of debt securities payable in U.S. and foreign currencies. The fixed-income portion of the fund primarily invests in investment-grade debt securities. An investment-grade security is one that has been rated by at least one independent rating agency in its top four credit quality categories or determined by the advisor to be of comparable credit quality. However, the fund may invest up to 5% of its assets in below investment-grade (high-yield) securities.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

•	Allocation Risk - The fund's ability to achieve its investment objective depends in part on the managers' skill in determining the fund's asset class allocations and in selecting and weighting investments within each class. The managers' evaluations and assumptions regarding asset classes and investments may differ from actual market conditions.
•	Small- and Mid-Cap Stock Risks - Stocks of smaller companies can be more volatile than larger-company stocks. Smaller companies may have limited financial resources, product lines and markets, and their securities may trade less frequently and in more limited volumes than the securities of larger companies, which could lead to higher transaction costs. To the extent the fund invests in these companies, it may take on more risk.
•	"Growth" and "Value" Style Risks - The fund employs a mix of investment styles, each of which has risks associated with it. Growth stocks can be volatile and may lack dividends that can cushion share prices during market declines. Value stocks may continue to be undervalued by the market for long periods of time.
•	Interest Rate Risk - Generally, when interest rates rise, the value of the fund's fixed-income securities will decline. The opposite is true when interest rates decline.
•	Credit Risk - The value of the fund's fixed-income securities will be affected adversely by the inability or perceived inability of the issuers of these securities to make interest and principal payments as they become due. To the extent that Strategic Allocation: Moderate invests in below investment-grade (high-yield) securities, the fund takes on additional credit risk.
•	Prepayment Risk - The fund may invest in debt securities backed by mortgages or other assets. If these underlying assets are prepaid, the fund may benefit less from declining interest rates than funds of similar maturity that invest less heavily in mortgage- and asset-backed securities.
•	Foreign Risk - The fund may invest in foreign securities, which may be riskier than investing in U.S. securities. Securities of foreign issuers may be less liquid, more volatile and harder to value than U.S. securities. Fluctuations in currency exchange rates also may affect the fund's share price. Investing in securities of companies located in emerging market countries is generally riskier than investing in securities of companies located in developed foreign countries.
•	Market Risk - The value of the fund's shares will go up and down based on the performance of the companies whose securities it owns and other factors generally affecting the securities market.
•	Principal Loss - At any given time your shares may be worth less than the price you paid for them. In other words, it is possible to lose money by investing in the fund.

An investment in the fund is not a bank deposit, and it is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.

Risk Lose Money [Text]

rr_RiskLoseMoney

Principal Loss - At any given time your shares may be worth less than the price you paid for them. In other words, it is possible to lose money by investing in the fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the fund is not a bank deposit, and it is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

americancentury.com

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

Calendar Year Total Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Performance Quarter (2Q 2003): 11.59%

Lowest Performance Quarter (4Q 2008): -13.29%

As of June 30, 2013, the most recent calendar quarter end, the fund's Investor Class year-to-date return was 5.20%.

Year to Date Return, Label

rr_YearToDateReturnLabel

Investor Class year-to-date return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.20%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Performance Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2003

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

11.59%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Performance Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(13.29%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the calendar year 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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

STRATEGIC ALLOCATION: MODERATE FUND | INVESTOR CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

rr_ManagementFeesOverAssets

1.06%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

1.07%

rr_ExpenseExampleYear01

109

rr_ExpenseExampleYear03

341

rr_ExpenseExampleYear05

591

rr_ExpenseExampleYear10

1,306

Annual Return 2003

rr_AnnualReturn2003

22.61%

Annual Return 2004

rr_AnnualReturn2004

9.77%

Annual Return 2005

rr_AnnualReturn2005

6.45%

Annual Return 2006

rr_AnnualReturn2006

12.22%

Annual Return 2007

rr_AnnualReturn2007

11.16%

Annual Return 2008

rr_AnnualReturn2008

(25.95%)

Annual Return 2009

rr_AnnualReturn2009

21.10%

Annual Return 2010

rr_AnnualReturn2010

12.75%

Annual Return 2011

rr_AnnualReturn2011

0.54%

Annual Return 2012

rr_AnnualReturn2012

12.83%

rr_AverageAnnualReturnYear01

12.83%

rr_AverageAnnualReturnYear05

2.78%

rr_AverageAnnualReturnYear10

7.43%

rr_AverageAnnualReturnInceptionDate

Feb. 15, 1996

STRATEGIC ALLOCATION: MODERATE FUND | INSTITUTIONAL CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

0.86%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

0.87%

rr_ExpenseExampleYear01

rr_ExpenseExampleYear03

278

rr_ExpenseExampleYear05

483

rr_ExpenseExampleYear10

1,073

rr_AverageAnnualReturnYear01

13.05%

rr_AverageAnnualReturnYear05

2.98%

rr_AverageAnnualReturnYear10

7.65%

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2000

STRATEGIC ALLOCATION: MODERATE FUND | A CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

1.06%

rr_DistributionAndService12b1FeesOverAssets

0.25%

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

1.32%

rr_ExpenseExampleYear01

702

rr_ExpenseExampleYear03

970

rr_ExpenseExampleYear05

1,258

rr_ExpenseExampleYear10

2,073

rr_AverageAnnualReturnYear01

6.11%

^[1]

rr_AverageAnnualReturnYear05

1.32%

^[1]

rr_AverageAnnualReturnYear10

6.56%

^[1]

rr_AverageAnnualReturnInceptionDate

Oct. 02, 1996

^[1]

STRATEGIC ALLOCATION: MODERATE FUND | B CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

5.00%

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

1.06%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

2.07%

rr_ExpenseExampleYear01

611

rr_ExpenseExampleYear03

950

rr_ExpenseExampleYear05

1,214

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleYear10

2,205

rr_ExpenseExampleNoRedemptionYear01

211

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

650

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,114

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,205

rr_AverageAnnualReturnYear01

7.75%

rr_AverageAnnualReturnYear05

1.58%

rr_AverageAnnualReturnSinceInception

5.12%

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2004

STRATEGIC ALLOCATION: MODERATE FUND | C CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

1.00%

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

1.06%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

2.07%

rr_ExpenseExampleYear01

211

rr_ExpenseExampleYear03

650

rr_ExpenseExampleYear05

1,114

rr_ExpenseExampleYear10

2,397

rr_AverageAnnualReturnYear01

11.73%

rr_AverageAnnualReturnYear05

1.76%

rr_AverageAnnualReturnYear10

6.42%

rr_AverageAnnualReturnInceptionDate

Oct. 02, 2001

STRATEGIC ALLOCATION: MODERATE FUND | R CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

1.06%

rr_DistributionAndService12b1FeesOverAssets

0.50%

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

1.57%

rr_ExpenseExampleYear01

160

rr_ExpenseExampleYear03

496

rr_ExpenseExampleYear05

856

rr_ExpenseExampleYear10

1,866

rr_AverageAnnualReturnYear01

12.38%

rr_AverageAnnualReturnYear05

2.26%

rr_AverageAnnualReturnSinceInception

6.12%

rr_AverageAnnualReturnInceptionDate

Aug. 29, 2003

STRATEGIC ALLOCATION: MODERATE FUND | R6 CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

0.71%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

0.72%

rr_ExpenseExampleYear01

rr_ExpenseExampleYear03

231

rr_ExpenseExampleYear05

401

rr_ExpenseExampleYear10

895

STRATEGIC ALLOCATION: MODERATE FUND | Return After Taxes on Distributions | INVESTOR CLASS

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

11.94%

rr_AverageAnnualReturnYear05

2.26%

rr_AverageAnnualReturnYear10

6.43%

rr_AverageAnnualReturnInceptionDate

Feb. 15, 1996

STRATEGIC ALLOCATION: MODERATE FUND | Return After Taxes on Distributions and Sale of Fund Shares | INVESTOR CLASS

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

9.43%

rr_AverageAnnualReturnYear05

2.23%

rr_AverageAnnualReturnYear10

6.15%

rr_AverageAnnualReturnInceptionDate

Feb. 15, 1996

STRATEGIC ALLOCATION: MODERATE FUND | S&P 500® Index (reflects no deductions for fees, expenses or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

16.00%

rr_AverageAnnualReturnYear05

1.66%

rr_AverageAnnualReturnYear10

7.10%

STRATEGIC ALLOCATION: MODERATE FUND | Barclays U.S. Aggregate Bond Index (reflects no deductions for fees, expenses or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

4.21%

rr_AverageAnnualReturnYear05

5.95%

rr_AverageAnnualReturnYear10

5.18%

STRATEGIC ALLOCATION: MODERATE FUND | Barclays U.S. 1-3 Month Treasury Bill Index (reflects no deductions for fees, expenses or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

0.08%

rr_AverageAnnualReturnYear05

0.44%

rr_AverageAnnualReturnYear10

1.69%

STRATEGIC ALLOCATION: AGGRESSIVE FUND

Objective, Primary [Text Block]

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

RISK/RETURN

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

rr_ObjectivePrimaryTextBlock

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

80.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

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 below is intended to help you compare the costs of investing in the fund with the costs of investing in other mutual funds.

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The fund's asset allocation strategy diversifies investments among equity securities, bonds and money market instruments. Strategic Allocation: Aggressive seeks long-term capital growth with a small amount of regular income. It emphasizes investments in equity securities but maintains a portion of its assets in bonds and money market securities. The following table indicates the fund's neutral mix, that is, how the fund's investments generally will be allocated among the major asset classes over the long term. The table also shows the operating ranges within which the fund's asset mix generally will vary over short-term periods.

	Equity Securities (Stocks)	Fixed-Income or Debt Securities (Bonds)	Cash Equivalents (Money Markets)
Neutral Mix	79%	20%	1%
Operating Range	60-90%	10-30%	0-15%

The fund also invests in a variety of debt securities payable in U.S. and foreign currencies. The fixed-income portion of the fund primarily invests in investment-grade debt securities. An investment-grade security is one that has been rated by at least one independent rating agency in its top four credit quality categories or determined by the advisor to be of comparable credit quality. However, the fund may invest up to 10% of its assets in below investment-grade (high-yield) securities.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

•	Allocation Risk - The fund's ability to achieve its investment objective depends in part on the managers' skill in determining the fund's asset class allocations and in selecting and weighting investments within each class. The managers' evaluations and assumptions regarding asset classes and investments may differ from actual market conditions.
•	Small- and Mid-Cap Stock Risks - Stocks of smaller companies can be more volatile than larger-company stocks. Smaller companies may have limited financial resources, product lines and markets, and their securities may trade less frequently and in more limited volumes than the securities of larger companies, which could lead to higher transaction costs. To the extent the fund invests in these companies, it may take on more risk.
•	"Growth" and "Value" Style Risks - The fund employs a mix of investment styles, each of which has risks associated with it. Growth stocks can be volatile and may lack dividends that can cushion share prices during market declines. Value stocks may continue to be undervalued by the market for long periods of time.
•	Interest Rate Risk - Generally, when interest rates rise, the value of the fund's fixed-income securities will decline. The opposite is true when interest rates decline.
•	Credit Risk - The value of the fund's fixed-income securities will be affected adversely by the inability or perceived inability of the issuers of these securities to make interest and principal payments as they become due. To the extent that Strategic Allocation: Aggressive invests in below investment-grade (high-yield) securities, the fund takes on additional credit risk.
•	Prepayment Risk - The fund may invest in debt securities backed by mortgages or other assets. If these underlying assets are prepaid, the fund may benefit less from declining interest rates than funds of similar maturity that invest less heavily in mortgage- and asset-backed securities.
•	Foreign Risk - The fund may invest in foreign securities, which may be riskier than investing in U.S. securities. Securities of foreign issuers may be less liquid, more volatile and harder to value than U.S. securities. Fluctuations in currency exchange rates also may affect the fund's share price. Investing in securities of companies located in emerging market countries is generally riskier than investing in securities of companies located in developed foreign countries.
•	Market Risk - The value of the fund's shares will go up and down based on the performance of the companies whose securities it owns and other factors generally affecting the securities market.
•	Principal Loss - At any given time your shares may be worth less than the price you paid for them. In other words, it is possible to lose money by investing in the fund.

An investment in the fund is not a bank deposit, and it is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.

Risk Lose Money [Text]

rr_RiskLoseMoney

Principal Loss - At any given time your shares may be worth less than the price you paid for them. In other words, it is possible to lose money by investing in the fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the fund is not a bank deposit, and it is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

americancentury.com

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

Calendar Year Total Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Performance Quarter (2Q 2003): 13.62%

Lowest Performance Quarter (4Q 2008): -17.75%

As of June 30, 2013, the most recent calendar quarter end, the fund's Investor Class year-to-date return was 6.63%.

Year to Date Return, Label

rr_YearToDateReturnLabel

Investor Class year-to-date return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.63%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Performance Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2003

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.62%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Performance Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(17.75%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the calendar year 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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

STRATEGIC ALLOCATION: AGGRESSIVE FUND | INVESTOR CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

rr_ManagementFeesOverAssets

1.20%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

1.21%

rr_ExpenseExampleYear01

124

rr_ExpenseExampleYear03

385

rr_ExpenseExampleYear05

666

rr_ExpenseExampleYear10

1,465

Annual Return 2003

rr_AnnualReturn2003

27.84%

Annual Return 2004

rr_AnnualReturn2004

11.61%

Annual Return 2005

rr_AnnualReturn2005

7.69%

Annual Return 2006

rr_AnnualReturn2006

14.13%

Annual Return 2007

rr_AnnualReturn2007

14.88%

Annual Return 2008

rr_AnnualReturn2008

(33.74%)

Annual Return 2009

rr_AnnualReturn2009

25.99%

Annual Return 2010

rr_AnnualReturn2010

15.31%

Annual Return 2011

rr_AnnualReturn2011

(1.93%)

Annual Return 2012

rr_AnnualReturn2012

15.02%

rr_AverageAnnualReturnYear01

15.02%

rr_AverageAnnualReturnYear05

1.66%

rr_AverageAnnualReturnYear10

8.14%

rr_AverageAnnualReturnInceptionDate

Feb. 15, 1996

STRATEGIC ALLOCATION: AGGRESSIVE FUND | INSTITUTIONAL CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

1.00%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

1.01%

rr_ExpenseExampleYear01

103

rr_ExpenseExampleYear03

322

rr_ExpenseExampleYear05

559

rr_ExpenseExampleYear10

1,236

rr_AverageAnnualReturnYear01

15.09%

rr_AverageAnnualReturnYear05

1.86%

rr_AverageAnnualReturnYear10

8.35%

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2000

STRATEGIC ALLOCATION: AGGRESSIVE FUND | A CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

1.20%

rr_DistributionAndService12b1FeesOverAssets

0.25%

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

1.46%

rr_ExpenseExampleYear01

715

rr_ExpenseExampleYear03

1,011

rr_ExpenseExampleYear05

1,327

rr_ExpenseExampleYear10

2,220

rr_AverageAnnualReturnYear01

8.14%

^[1]

rr_AverageAnnualReturnYear05

0.22%

^[1]

rr_AverageAnnualReturnYear10

7.22%

^[1]

rr_AverageAnnualReturnInceptionDate

Oct. 02, 1996

^[1]

STRATEGIC ALLOCATION: AGGRESSIVE FUND | B CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

5.00%

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

1.20%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

2.21%

rr_ExpenseExampleYear01

625

rr_ExpenseExampleYear03

992

rr_ExpenseExampleYear05

1,286

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleYear10

2,352

rr_ExpenseExampleNoRedemptionYear01

225

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

692

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,186

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,352

rr_AverageAnnualReturnYear01

9.93%

rr_AverageAnnualReturnYear05

0.46%

rr_AverageAnnualReturnSinceInception

5.38%

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2004

STRATEGIC ALLOCATION: AGGRESSIVE FUND | C CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

1.00%

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

1.20%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

2.21%

rr_ExpenseExampleYear01

225

rr_ExpenseExampleYear03

692

rr_ExpenseExampleYear05

1,186

rr_ExpenseExampleYear10

2,540

rr_AverageAnnualReturnYear01

13.81%

rr_AverageAnnualReturnYear05

0.66%

rr_AverageAnnualReturnYear10

7.09%

rr_AverageAnnualReturnInceptionDate

Nov. 27, 2001

STRATEGIC ALLOCATION: AGGRESSIVE FUND | R CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

1.20%

rr_DistributionAndService12b1FeesOverAssets

0.50%

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

1.71%

rr_ExpenseExampleYear01

174

rr_ExpenseExampleYear03

540

rr_ExpenseExampleYear05

929

rr_ExpenseExampleYear10

2,017

rr_AverageAnnualReturnYear01

14.30%

rr_AverageAnnualReturnYear05

1.13%

rr_AverageAnnualReturnSinceInception

5.26%

rr_AverageAnnualReturnInceptionDate

Mar. 31, 2005

STRATEGIC ALLOCATION: AGGRESSIVE FUND | R6 CLASS

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the original offering price for B Class shares or the lower of the original offering price or redemption proceeds for C Class shares)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)

rr_MaximumAccountFee

none

rr_ManagementFeesOverAssets

0.85%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.01%

rr_ExpensesOverAssets

0.86%

rr_ExpenseExampleYear01

rr_ExpenseExampleYear03

275

rr_ExpenseExampleYear05

477

rr_ExpenseExampleYear10

$ 1,061

STRATEGIC ALLOCATION: AGGRESSIVE FUND | Return After Taxes on Distributions | INVESTOR CLASS

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

14.16%

rr_AverageAnnualReturnYear05

1.33%

rr_AverageAnnualReturnYear10

7.32%

rr_AverageAnnualReturnInceptionDate

Feb. 15, 1996

STRATEGIC ALLOCATION: AGGRESSIVE FUND | Return After Taxes on Distributions and Sale of Fund Shares | INVESTOR CLASS

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

10.89%

rr_AverageAnnualReturnYear05

1.38%

rr_AverageAnnualReturnYear10

6.93%

rr_AverageAnnualReturnInceptionDate

Feb. 15, 1996

STRATEGIC ALLOCATION: AGGRESSIVE FUND | S&P 500® Index (reflects no deductions for fees, expenses or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

16.00%

rr_AverageAnnualReturnYear05

1.66%

rr_AverageAnnualReturnYear10

7.10%

STRATEGIC ALLOCATION: AGGRESSIVE FUND | Barclays U.S. Aggregate Bond Index (reflects no deductions for fees, expenses or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

4.21%

rr_AverageAnnualReturnYear05

5.95%

rr_AverageAnnualReturnYear10

5.18%

STRATEGIC ALLOCATION: AGGRESSIVE FUND | Barclays U.S. 1-3 Month Treasury Bill Index (reflects no deductions for fees, expenses or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

0.08%

rr_AverageAnnualReturnYear05

0.44%