485BPOS

As filed with the U.S. Securities and Exchange Commission on January 11, 2013

Securities Act File No. 33-43446

Investment Company Act File No. 811-06444

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933	x
Pre-Effective Amendment No.
Post-Effective Amendment No. 254	x

and/or

REGISTRATION STATEMENT

UNDER

THE INVESTMENT COMPANY ACT OF 1940	x
Amendment No. 254

(Check appropriate box or boxes)

Legg Mason Partners Equity Trust

(Exact Name of Registrant as Specified in Charter)

55 Water Street, New York, New York	10041
(Address of Principal Executive Offices)	(Zip Code)

Registrant’s Telephone Number, including Area Code (877) 721-1926

Robert I. Frenkel

Legg Mason Partners Equity Trust

100 First Stamford Place

Stamford, Connecticut 06902

(Name and Address of Agent for Service)

COPY TO:

Benjamin J. Haskin, Esq.

Willkie Farr & Gallagher LLP

1875 K Street, N.W.

Washington, D.C. 20006

Continuous

(Approximate Date of Proposed Offering)

It is proposed that this filing will become effective:

x immediately upon filing pursuant to paragraph (b)

¨ on             pursuant to paragraph (b)

¨ 60 days after filing pursuant to paragraph (a)(1)

¨ on             pursuant to paragraph (a)(1)

¨ 75 days after filing pursuant to paragraph (a)(2)

¨ on             pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

¨ This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

This filing relates solely to ClearBridge Aggressive Growth Fund.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended (the “Securities Act”), and the Investment Company Act of 1940, as amended, the Registrant, LEGG MASON PARTNERS EQUITY TRUST, hereby certifies that it meets all the requirements for effectiveness of this Registration Statement under Rule 485(b) under the Securities Act and has duly caused this Post-Effective Amendment to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York, State of New York on this 11^th day of January 2013.

LEGG MASON PARTNERS EQUITY TRUST, on behalf of ClearBridge Aggressive Growth Fund.

By:	/s/ R. Jay Gerken
	R. Jay Gerken
	President and Chief Executive Officer

WITNESS our hands on the date set forth below.

Pursuant to the requirements of the Securities Act, this Post-Effective Amendment to the Registration Statement has been signed below by the following persons in the capacities indicated below on January 11, 2013.

Signature	Title
/s/ R. Jay Gerken	President, Chief Executive Officer and Trustee
R. Jay Gerken
/s/ Richard F. Sennett	Principal Financial Officer
Richard F. Sennett
Paul R. Ades*	Trustee
Paul R. Ades
Andrew L. Breech*	Trustee
Andrew L. Breech
Dwight B. Crane*	Trustee
Dwight B. Crane
Frank G. Hubbard*	Trustee
Frank G. Hubbard
Howard J. Johnson*	Trustee
Howard J. Johnson
Jerome H. Miller*	Trustee
Jerome H. Miller
Ken Miller*	Trustee
Ken Miller
John J. Murphy*	Trustee
John J. Murphy
Thomas F. Schlafly*	Trustee
Thomas F. Schlafly
Jerry A. Viscione*	Trustee
Jerry A. Viscione

*By:	/s/ R. Jay Gerken
	R. Jay Gerken, as Agent

EXHIBIT INDEX

Index No.	Description of Exhibit
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	LEGG MASON PARTNERS EQUITY TRUST
Prospectus Date	rr_ProspectusDate	Dec. 28, 2012
Legg Mason ClearBridge Aggressive Growth Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	ClearBridge Aggressive Growth Fund
Objective [Heading]	rr_ObjectiveHeading	Investment objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The fund seeks capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fees and expenses of the fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The accompanying table describes the fees and expenses that you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in funds sold by Legg Mason Investor Services, LLC (“LMIS”), the fund’s distributor. More information about these and other discounts is available from your financial intermediary, in this Prospectus on page 18 under the heading “Sales charges” and in the fund’s statement of additional information (“SAI”) on page 52 under the heading “Sales Charge Waivers and Reductions.” The fund no longer offers Class B shares and Class R1 shares for purchase by new or existing investors. Class B shares will continue to be available for dividend reinvestment and incoming exchanges.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment) (%)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	December 31, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio turnover.
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when 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 8% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	8.00%
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 $25,000 in funds sold by Legg Mason Investor Services, LLC (“LMIS”), the fund’s distributor.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	25,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	“Other expenses” for Class R1 shares are estimated for the current fiscal year. Actual expenses may differ from estimates.
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: You invest $10,000 in the fund for the time periods indicated Your investment has a 5% return each year and the fund’s operating expenses remain the same You reinvest all distributions and dividends without a sales charge Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text]	rr_ExpenseExampleByYearCaption	Number of years you own your shares ($)
Expense Example, No Redemption, By Year, Caption [Text]	rr_ExpenseExampleNoRedemptionByYearCaption	Number of years you own your shares ($)
Strategy [Heading]	rr_StrategyHeading	Principal investment strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The fund invests primarily in common stocks of companies the portfolio managers believe are experiencing, or will experience, growth in earnings exceeding the average rate of earnings growth of the companies which comprise the S&P 500 Index. The fund may invest in the securities of large, well-known companies offering prospects of long-term earnings growth. However, because higher earnings growth rates are often achieved by small to medium capitalization companies, a significant portion of the fund’s assets may be invested in the securities of such companies. The fund may invest up to 25% of its net assets (at the time of investment) in foreign securities.
Risk [Heading]	rr_RiskHeading	Certain risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Risk is inherent in all investing. There is no assurance that the fund will meet its investment objective. The value of your investment in the fund, as well as the amount of return you receive on your investment, may fluctuate significantly. You may lose part or all of your investment in the fund or your investment may not perform as well as other similar investments. The following is a summary description of certain risks of investing in the fund. Stock market and equity securities risk. The securities markets are volatile and the market prices of the fund’s securities may decline generally. Securities fluctuate in price based on changes in a company’s financial condition and overall market and economic conditions. If the market prices of the securities owned by the fund fall, the value of your investment in the fund will decline. The financial crisis that began in 2008 has caused a significant decline in the value and liquidity of many securities of issuers worldwide. In response to the crisis, the U.S. and other governments and the Federal Reserve and certain foreign central banks have taken steps to support financial markets. The withdrawal of this support, failure of efforts to respond to the crisis, or investor perception that such efforts are not succeeding could also negatively affect financial markets generally as well as the value and liquidity of certain securities. In addition, policy and legislative changes in the United States and in other countries are changing many aspects of financial regulation. The impact of these changes on the markets, and the practical implications for market participants, may not be fully known for some time. Market sector risk. The fund may be significantly overweight or underweight certain companies, industries or market sectors, which may cause the fund’s performance to be more sensitive to developments affecting those companies, industries or sectors. Large capitalization company risk. Large capitalization companies may fall out of favor with investors. Small and medium capitalization company risk. The fund will be exposed to additional risks as a result of its investments in the securities of small and medium capitalization companies. Small and medium capitalization companies may fall out of favor with investors; may have limited product lines, operating histories, markets or financial resources; or may be dependent upon a limited management group. The prices of securities of small and medium capitalization companies generally are more volatile than those of large capitalization companies and are more likely to be adversely affected than large capitalization companies by changes in earnings results and investor expectations or poor economic or market conditions, including those experienced during a recession. Securities of small and medium capitalization companies may underperform large capitalization companies, may be harder to sell at times and at prices the portfolio managers believe appropriate and may offer greater potential for losses. Issuer risk. The value of a security can go up or down more than the market as a whole and can perform differently from the value of the market as a whole, often due to disappointing earnings reports by the issuer, unsuccessful products or services, loss of major customers, major litigation against the issuer or changes in government regulations affecting the issuer or the competitive environment. The fund may experience a substantial or complete loss on an individual security. Historically, the prices of securities of small and medium capitalization companies have generally gone up or down more than those of large capitalization companies, although even large capitalization companies may fall out of favor with investors. Foreign investments risk. The fund’s investments in securities of foreign issuers or issuers with significant exposure to foreign markets involve additional risk. Foreign countries in which the fund may invest may have markets that are less liquid, less regulated and more volatile than U.S. markets. The value of the fund’s investments may decline because of factors affecting the particular issuer as well as foreign markets and issuers generally, such as unfavorable government actions, and political or financial instability. Lack of information may also affect the value of these securities. The risks of foreign investments are heightened when investing in issuers in emerging market countries. Currency risk. The value of investments in securities denominated in foreign currencies increases or decreases as the rates of exchange between those currencies and the U.S. dollar change. Currency conversion costs and currency fluctuations could erase investment gains or add to investment losses. Currency exchange rates can be volatile, and are affected by factors such as general economic conditions, the actions of the U.S. and foreign governments or central banks, the imposition of currency controls and speculation. Growth investing risk. The fund’s growth-oriented investment style may increase the risks of investing in the fund. Growth securities typically are very sensitive to market movements because their market prices tend to reflect future expectations. When it appears those expectations will not be met, the prices of growth securities typically fall. Growth stocks as a group may be out of favor and underperform the overall equity market while the market concentrates on value stocks. Although the fund will not concentrate its investments in any one industry or industry group, it may, like many growth funds, weight its investments toward certain industries, thus increasing its exposure to factors adversely affecting issuers within those industries. Liquidity risk. Some securities held by the fund may be difficult to sell, or illiquid, particularly during times of market turmoil. Illiquid securities may also be difficult to value. If the fund is forced to sell an illiquid asset to meet redemption requests or other cash needs, the fund may be forced to sell at a loss. Portfolio selection risk. The value of your investment may decrease if the subadviser’s judgment about the attractiveness, value or market trends affecting a particular security, industry or sector or about market movements is incorrect. Risk of increase in expenses. Your actual costs of investing in the fund may be higher than the expenses shown in “Annual fund operating expenses” for a variety of reasons. For example, expense ratios may be higher than those shown if a fee limitation is changed or terminated or if average net assets decrease. Net assets are more likely to decrease and fund expense ratios are more likely to increase when markets are volatile. These risks are discussed in more detail later in this Prospectus or in the SAI.
Risk Lose Money [Text]	rr_RiskLoseMoney	You may lose part or all of your investment in the fund or your investment may not perform as well as other similar investments.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The accompanying 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 Class A shares. The table shows the average annual total returns of each class of the fund that has been in operation for at least one full calendar year and also compares the fund’s performance with the average annual total returns of an index or other benchmark. Performance for classes other than those shown may vary from the performance shown to the extent the expenses for those classes differ. The fund makes updated performance information available at the fund’s website, http://www.leggmason.com/individualinvestors/products/mutual-funds/annualized_performance (select share class), or by calling the fund at 1-877-721-1926. The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. Sales charges are not reflected in the accompanying bar chart, and if those charges were included, returns would be less than those shown.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows changes in the fund's performance from year to year for Class A shares. The table shows the average annual total returns of each class of the fund that has been in operation for at least one full calendar year and also compares the fund's performance with the average annual total returns of an index or other benchmark.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	1-877-721-1926
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	http://www.leggmason.com/individualinvestors/products/mutual-funds/annualized_performance (select share class)
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	Total returns (before taxes) (%)
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Sales charges are not reflected in the accompanying bar chart, and if those charges were included, returns would be less than those shown.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Calendar Years ended December 31 Best quarter (06/30/2009): 17.34 Worst quarter (06/30/2002): (25.52) The year-to-date return as of the most recent calendar quarter, which ended 09/30/2012, was 18.62
Performance Table Heading	rr_PerformanceTableHeading	Average annual total returns (for periods ended December 31, 2011) (%)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are shown only for Class A shares, are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	After-tax returns for classes other than Class A will vary from returns shown for Class A.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The after-tax returns are shown only for Class A shares, are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns for classes other than Class A will vary from returns shown for Class A.
Legg Mason ClearBridge Aggressive Growth Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) (as a % of the lower of net asset value at purchase or redemption) (may be reduced over time)	rr_MaximumDeferredSalesChargeOverOther	none	[1]
Small account fee ($)	rr_MaximumAccountFee	15	[2]
Management fees	rr_ManagementFeesOverAssets	0.71%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.31%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.27%
Fees waived and/or expenses reimbursed	rr_FeeWaiverOrReimbursementOverAssets		[3]
Total annual fund operating expenses after waiving fees and/or reimbursing expenses	rr_NetExpensesOverAssets	1.27%
1 Year	rr_ExpenseExampleYear01	697
3 Years	rr_ExpenseExampleYear03	954
5 Years	rr_ExpenseExampleYear05	1,231
10 Years	rr_ExpenseExampleYear10	2,020
1 Year	rr_ExpenseExampleNoRedemptionYear01	697
3 Years	rr_ExpenseExampleNoRedemptionYear03	954
5 Years	rr_ExpenseExampleNoRedemptionYear05	1,231
10 Years	rr_ExpenseExampleNoRedemptionYear10	2,020
2002	rr_AnnualReturn2002	(32.75%)
2003	rr_AnnualReturn2003	36.57%
2004	rr_AnnualReturn2004	10.61%
2005	rr_AnnualReturn2005	12.55%
2006	rr_AnnualReturn2006	7.98%
2007	rr_AnnualReturn2007	1.22%
2008	rr_AnnualReturn2008	(42.40%)
2009	rr_AnnualReturn2009	32.69%
2010	rr_AnnualReturn2010	23.92%
2011	rr_AnnualReturn2011	1.41%
Year to Date Return, Label	rr_YearToDateReturnLabel	The year-to-date return as of the most recent calendar quarter
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	18.62%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	17.34%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Jun. 30, 2002
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(25.52%)
1 Year	rr_AverageAnnualReturnYear01	(4.41%)
5 Years	rr_AverageAnnualReturnYear05	(1.73%)
10 Years	rr_AverageAnnualReturnYear10	1.24%
Legg Mason ClearBridge Aggressive Growth Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) (as a % of the lower of net asset value at purchase or redemption) (may be reduced over time)	rr_MaximumDeferredSalesChargeOverOther	5.00%
Small account fee ($)	rr_MaximumAccountFee	15	[2]
Management fees	rr_ManagementFeesOverAssets	0.71%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.53%
Total annual fund operating expenses	rr_ExpensesOverAssets	2.24%
Fees waived and/or expenses reimbursed	rr_FeeWaiverOrReimbursementOverAssets		[3]
Total annual fund operating expenses after waiving fees and/or reimbursing expenses	rr_NetExpensesOverAssets	2.24%
1 Year	rr_ExpenseExampleYear01	727
3 Years	rr_ExpenseExampleYear03	1,000
5 Years	rr_ExpenseExampleYear05	1,299
10 Years	rr_ExpenseExampleYear10	2,329
1 Year	rr_ExpenseExampleNoRedemptionYear01	227
3 Years	rr_ExpenseExampleNoRedemptionYear03	700
5 Years	rr_ExpenseExampleNoRedemptionYear05	1,199
10 Years	rr_ExpenseExampleNoRedemptionYear10	2,329
1 Year	rr_AverageAnnualReturnYear01	(4.43%)
5 Years	rr_AverageAnnualReturnYear05	(1.56%)
10 Years	rr_AverageAnnualReturnYear10	1.15%
Legg Mason ClearBridge Aggressive Growth Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) (as a % of the lower of net asset value at purchase or redemption) (may be reduced over time)	rr_MaximumDeferredSalesChargeOverOther	1.00%
Small account fee ($)	rr_MaximumAccountFee	15	[2]
Management fees	rr_ManagementFeesOverAssets	0.71%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.18%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.89%
Fees waived and/or expenses reimbursed	rr_FeeWaiverOrReimbursementOverAssets		[3]
Total annual fund operating expenses after waiving fees and/or reimbursing expenses	rr_NetExpensesOverAssets	1.89%
1 Year	rr_ExpenseExampleYear01	292
3 Years	rr_ExpenseExampleYear03	594
5 Years	rr_ExpenseExampleYear05	1,021
10 Years	rr_ExpenseExampleYear10	2,212
1 Year	rr_ExpenseExampleNoRedemptionYear01	192
3 Years	rr_ExpenseExampleNoRedemptionYear03	594
5 Years	rr_ExpenseExampleNoRedemptionYear05	1,021
10 Years	rr_ExpenseExampleNoRedemptionYear10	2,212
1 Year	rr_AverageAnnualReturnYear01	(0.19%)
5 Years	rr_AverageAnnualReturnYear05	(1.14%)
10 Years	rr_AverageAnnualReturnYear10	1.19%
Legg Mason ClearBridge Aggressive Growth Fund | Class FI
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) (as a % of the lower of net asset value at purchase or redemption) (may be reduced over time)	rr_MaximumDeferredSalesChargeOverOther	none
Small account fee ($)	rr_MaximumAccountFee	none	[2]
Management fees	rr_ManagementFeesOverAssets	0.71%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.47%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.43%
Fees waived and/or expenses reimbursed	rr_FeeWaiverOrReimbursementOverAssets	(0.13%)	[4]
Total annual fund operating expenses after waiving fees and/or reimbursing expenses	rr_NetExpensesOverAssets	1.30%
1 Year	rr_ExpenseExampleYear01	132
3 Years	rr_ExpenseExampleYear03	426
5 Years	rr_ExpenseExampleYear05	756
10 Years	rr_ExpenseExampleYear10	1,690
1 Year	rr_ExpenseExampleNoRedemptionYear01	132
3 Years	rr_ExpenseExampleNoRedemptionYear03	426
5 Years	rr_ExpenseExampleNoRedemptionYear05	756
10 Years	rr_ExpenseExampleNoRedemptionYear10	1,690
1 Year	rr_AverageAnnualReturnYear01	1.39%	[5]
5 Years	rr_AverageAnnualReturnYear05		[3],[5]
10 Years	rr_AverageAnnualReturnYear10		[3],[5]
Since Inception	rr_AverageAnnualReturnSinceInception	(1.31%)	[5]
Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 30, 2007	[5]
Legg Mason ClearBridge Aggressive Growth Fund | Class R
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) (as a % of the lower of net asset value at purchase or redemption) (may be reduced over time)	rr_MaximumDeferredSalesChargeOverOther	none
Small account fee ($)	rr_MaximumAccountFee	none	[2]
Management fees	rr_ManagementFeesOverAssets	0.71%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	0.27%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.48%
Fees waived and/or expenses reimbursed	rr_FeeWaiverOrReimbursementOverAssets		[4]
Total annual fund operating expenses after waiving fees and/or reimbursing expenses	rr_NetExpensesOverAssets	1.48%
1 Year	rr_ExpenseExampleYear01	151
3 Years	rr_ExpenseExampleYear03	468
5 Years	rr_ExpenseExampleYear05	808
10 Years	rr_ExpenseExampleYear10	1,769
1 Year	rr_ExpenseExampleNoRedemptionYear01	151
3 Years	rr_ExpenseExampleNoRedemptionYear03	468
5 Years	rr_ExpenseExampleNoRedemptionYear05	808
10 Years	rr_ExpenseExampleNoRedemptionYear10	1,769
1 Year	rr_AverageAnnualReturnYear01	1.23%	[5]
5 Years	rr_AverageAnnualReturnYear05	(0.70%)	[5]
10 Years	rr_AverageAnnualReturnYear10		[3],[5]
Since Inception	rr_AverageAnnualReturnSinceInception	(0.79%)	[5]
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 28, 2006	[5]
Legg Mason ClearBridge Aggressive Growth Fund | Class R1
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) (as a % of the lower of net asset value at purchase or redemption) (may be reduced over time)	rr_MaximumDeferredSalesChargeOverOther	none
Small account fee ($)	rr_MaximumAccountFee	none	[2]
Management fees	rr_ManagementFeesOverAssets	0.71%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.27%	[6]
Total annual fund operating expenses	rr_ExpensesOverAssets	1.98%
Fees waived and/or expenses reimbursed	rr_FeeWaiverOrReimbursementOverAssets		[4]
Total annual fund operating expenses after waiving fees and/or reimbursing expenses	rr_NetExpensesOverAssets	1.98%
1 Year	rr_ExpenseExampleYear01	201
3 Years	rr_ExpenseExampleYear03	621
5 Years	rr_ExpenseExampleYear05	1,067
10 Years	rr_ExpenseExampleYear10	2,306
1 Year	rr_ExpenseExampleNoRedemptionYear01	201
3 Years	rr_ExpenseExampleNoRedemptionYear03	621
5 Years	rr_ExpenseExampleNoRedemptionYear05	1,067
10 Years	rr_ExpenseExampleNoRedemptionYear10	2,306
Legg Mason ClearBridge Aggressive Growth Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) (as a % of the lower of net asset value at purchase or redemption) (may be reduced over time)	rr_MaximumDeferredSalesChargeOverOther	none
Small account fee ($)	rr_MaximumAccountFee	none	[2]
Management fees	rr_ManagementFeesOverAssets	0.71%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.14%
Total annual fund operating expenses	rr_ExpensesOverAssets	0.85%
Fees waived and/or expenses reimbursed	rr_FeeWaiverOrReimbursementOverAssets		[4]
Total annual fund operating expenses after waiving fees and/or reimbursing expenses	rr_NetExpensesOverAssets	0.85%
1 Year	rr_ExpenseExampleYear01	87
3 Years	rr_ExpenseExampleYear03	271
5 Years	rr_ExpenseExampleYear05	471
10 Years	rr_ExpenseExampleYear10	1,048
1 Year	rr_ExpenseExampleNoRedemptionYear01	87
3 Years	rr_ExpenseExampleNoRedemptionYear03	271
5 Years	rr_ExpenseExampleNoRedemptionYear05	471
10 Years	rr_ExpenseExampleNoRedemptionYear10	1,048
1 Year	rr_AverageAnnualReturnYear01	1.86%
5 Years	rr_AverageAnnualReturnYear05	(0.14%)
10 Years	rr_AverageAnnualReturnYear10	2.28%
Legg Mason ClearBridge Aggressive Growth Fund | Class IS
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) (as a % of the lower of net asset value at purchase or redemption) (may be reduced over time)	rr_MaximumDeferredSalesChargeOverOther	none
Small account fee ($)	rr_MaximumAccountFee	none	[2]
Management fees	rr_ManagementFeesOverAssets	0.71%
Distribution and service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.03%
Total annual fund operating expenses	rr_ExpensesOverAssets	0.74%
Fees waived and/or expenses reimbursed	rr_FeeWaiverOrReimbursementOverAssets		[4]
Total annual fund operating expenses after waiving fees and/or reimbursing expenses	rr_NetExpensesOverAssets	0.74%
1 Year	rr_ExpenseExampleYear01	76
3 Years	rr_ExpenseExampleYear03	237
5 Years	rr_ExpenseExampleYear05	412
10 Years	rr_ExpenseExampleYear10	919
1 Year	rr_ExpenseExampleNoRedemptionYear01	76
3 Years	rr_ExpenseExampleNoRedemptionYear03	237
5 Years	rr_ExpenseExampleNoRedemptionYear05	412
10 Years	rr_ExpenseExampleNoRedemptionYear10	919
1 Year	rr_AverageAnnualReturnYear01	1.96%	[5]
5 Years	rr_AverageAnnualReturnYear05		[3],[5]
10 Years	rr_AverageAnnualReturnYear10		[3],[5]
Since Inception	rr_AverageAnnualReturnSinceInception	4.26%	[5]
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 04, 2008	[5]
Legg Mason ClearBridge Aggressive Growth Fund | Return after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	(4.74%)
5 Years	rr_AverageAnnualReturnYear05	(1.80%)
10 Years	rr_AverageAnnualReturnYear10	1.21%
Legg Mason ClearBridge Aggressive Growth Fund | Return after taxes on distributions and sale of fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	(2.42%)
5 Years	rr_AverageAnnualReturnYear05	(1.47%)
10 Years	rr_AverageAnnualReturnYear10	1.06%
Legg Mason ClearBridge Aggressive Growth Fund | Russell 3000 Growth Index (reflects no deduction for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.18%
5 Years	rr_AverageAnnualReturnYear05	2.46%
10 Years	rr_AverageAnnualReturnYear10	2.74%

[1] Generally,

[2] If your shares are held in a direct account and the value of your account is below $1,000 ($250 for retirement plans that are not employer-sponsored), the fund may charge you a fee of $3.75 per account that is determined and assessed quarterly (with an annual maximum of $15.00 per account). Direct accounts generally include accounts held in the name of the individual investor on the fund's books and records.

[3] N/A

[4] The manager has agreed to waive fees and/or reimburse operating expenses (other than interest, brokerage, taxes, extraordinary expenses and acquired fund fees and expenses) so that total annual operating expenses are not expected to exceed 1.30% for Class FI shares, 1.55% for Class R shares, 2.05% for Class R1 shares and 1.00% for Class I shares. In addition, total annual fund operating expenses for Class IS shares will not exceed total annual fund operating expenses for Class I shares. These arrangements cannot be terminated prior to December 31, 2014 without the Board of Trustees' consent. The manager is permitted to recapture amounts waived and/or reimbursed to a class during the same fiscal year if the class' total annual operating expenses have fallen to a level below the limits described above.

[5] For Class FI shares, Class R shares and Class IS shares, each for the period from the class' commencement of operations to December 31, 2011, the average annual total return of the Russell 3000 Growth Index was 1.39%, 2.37% and 4.34%, respectively.

[6] "Other expenses" for Class R1 shares are estimated for the current fiscal year. Actual expenses may differ from estimates.