Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	LEGG MASON PARTNERS EQUITY TRUST
Prospectus Date	rr_ProspectusDate	Mar. 01, 2017
ClearBridge Large Cap Value Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	CLEARBRIDGE LARGE CAP VALUE FUND
Objective [Heading]	rr_ObjectiveHeading	Investment objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The fund seeks long-term growth of capital as its primary investment objective.
Objective, Secondary [Text Block]	rr_ObjectiveSecondaryTextBlock	Current income is a secondary objective.
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 73 under the heading “Sales Charge Waivers and Reductions.” Class 1 shares of the fund are not available for purchases or 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)
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 5% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	5.00%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	You may buy Class A shares or Class A2 shares in amounts of $1,000,000 or more at net asset value (without an initial sales charge), but if you redeem those shares within 18 months of their purchase, you will pay a contingent deferred sales charge of 1.00%.
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 FI 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	Under normal circumstances, the fund invests at least 80% of its net assets, plus borrowings for investment purposes, if any, in equity securities, or other investments with similar economic characteristics, of companies with large market capitalizations.
Risk [Heading]	rr_RiskHeading	Principal risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Risk is inherent in all investing. 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. Market events risk. In the past several years financial markets, such as those in the United States, Europe, Asia and elsewhere, have experienced increased volatility, depressed valuations, decreased liquidity and heightened uncertainty. Governmental and non-governmental issuers have defaulted on, or been forced to restructure, their debts. These conditions may continue, recur, worsen or spread. Events that have contributed to these market conditions include, but are not limited to major cybersecurity events; measures to address U.S. federal and state budget deficits; downgrading of U.S. long-term sovereign debt; declines in oil and commodity prices; dramatic changes in currency exchange rates; and public sentiment. The U.S. government and the Federal Reserve, as well as certain foreign governments and central banks, have taken steps to support financial markets, including by keeping interest rates at historically low levels. This and other government intervention may not work as intended, particularly if the efforts are perceived by investors as being unlikely to achieve the desired results. The Federal Reserve has reduced its market support activities and recently has begun raising interest rates. Certain foreign governments and central banks are implementing or discussing so-called negative interest rates (e.g., charging depositors who keep their cash at a bank) to spur economic growth. Further Federal Reserve or other U.S. or non-U.S. governmental or central bank actions, including interest rate increases or contrary actions by different governments, could negatively affect financial markets generally, increase market volatility and reduce the value and liquidity of securities in which the fund invests. Policy and legislative changes in the United States and in other countries are affecting many aspects of financial regulation and may in some instances contribute to decreased liquidity and increased volatility in the financial markets. The impact of these changes on the markets, and the practical implications for market participants, may not be fully known for some time. Economies and financial markets throughout the world are increasingly interconnected. Economic, financial or political events, trading and tariff arrangements, terrorism, natural disasters and other circumstances in one country or region could have profound impacts on global economies or markets. As a result, whether or not the fund invests in securities of issuers located in or with significant exposure to the countries directly affected, the value and liquidity of the fund's investments may be negatively affected. 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. Large capitalization company risk. Large capitalization companies may fall out of favor with investors based on market and economic conditions. In return for the relative stability and low volatility of large capitalization companies, the fund's value may not rise as much as the value of funds that invest in companies with smaller market capitalizations. Liquidity risk. Some assets held by the fund may be impossible or difficult to sell, particularly during times of market turmoil. These illiquid assets may also be difficult to value. Markets may become illiquid when, for instance, there are few, if any, interested buyers or sellers or when dealers are unwilling or unable to make a market for certain securities. As a general matter, dealers recently have been less willing to make markets for fixed income securities. 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 management risk. The value of your investment may decrease if the subadviser's judgment about the attractiveness or value of, or market trends affecting a particular security, industry, sector or region, or about market movements is incorrect, or if there are imperfections, errors or limitations in the tools and data used by the subadviser. In addition, the fund's investment strategies or policies may change from time to time. Those changes may not lead to the results intended by the subadviser and could have an adverse effect on the value or performance of the fund. Value investing risk. The value approach to investing involves the risk that stocks may remain undervalued. Value stocks may underperform the overall equity market while the market concentrates on growth stocks. Although the fund will not concentrate its investments in any one industry or industry group, it may, like many value funds, weight its investments toward certain industries, thus increasing its exposure to factors adversely affecting issuers within those industries. Cybersecurity risk. Cybersecurity incidents may allow an unauthorized party to gain access to fund assets, customer data (including private shareholder information), or proprietary information, or cause the fund, the manager, the subadvisers and/or its service providers (including, but not limited to, fund accountants, custodians, sub-custodians, transfer agents and financial intermediaries) to suffer data breaches, data corruption or lose operational functionality. 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 I 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. The fund also compares the its performance to the S&P 500 Index. 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, including its current net asset value, available at www.leggmason.com/mutualfunds (select fund and 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 I 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	www.leggmason.com/mutualfunds (select fund and 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): 16.08    Worst Quarter (12/31/2008): (19.93)
Performance Table Heading	rr_PerformanceTableHeading	Average annual total returns (%) (for periods ended December 31, 2016)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are shown only for Class I 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	The after-tax returns are shown only for Class I 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 I will vary from returns shown for Class I.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	Prior to March 1, 2010, the fund invested primarily in common stocks of established U.S. companies under the name “Legg Mason ClearBridge Investors Value Fund.” The after-tax returns are shown only for Class I 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 I will vary from returns shown for Class I.
ClearBridge Large Cap Value Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%	[1]
Maximum deferred sales charge (load) (as a % of the lower of net asset value at purchase or redemption)	rr_MaximumDeferredSalesChargeOverOther	none	[2],[3]
Small account fee ($)	rr_MaximumAccountFee	$ 15	[4]
Management fees	rr_ManagementFeesOverAssets	0.48%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.14%
Total annual fund operating expenses	rr_ExpensesOverAssets	0.87%
1 year	rr_ExpenseExampleYear01	$ 659
3 years	rr_ExpenseExampleYear03	837
5 years	rr_ExpenseExampleYear05	1,029
10 years	rr_ExpenseExampleYear10	1,585
1 year	rr_ExpenseExampleNoRedemptionYear01	659
3 years	rr_ExpenseExampleNoRedemptionYear03	837
5 years	rr_ExpenseExampleNoRedemptionYear05	1,029
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,585
1 year	rr_AverageAnnualReturnYear01	6.30%
5 years	rr_AverageAnnualReturnYear05	11.96%
10 years	rr_AverageAnnualReturnYear10	5.20%
ClearBridge Large Cap Value Fund | Class A2
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)	rr_MaximumDeferredSalesChargeOverOther	none	[2],[3]
Small account fee ($)	rr_MaximumAccountFee	$ 15	[4]
Management fees	rr_ManagementFeesOverAssets	0.48%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.34%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.07%
1 year	rr_ExpenseExampleYear01	$ 678
3 years	rr_ExpenseExampleYear03	896
5 years	rr_ExpenseExampleYear05	1,131
10 years	rr_ExpenseExampleYear10	1,806
1 year	rr_ExpenseExampleNoRedemptionYear01	678
3 years	rr_ExpenseExampleNoRedemptionYear03	896
5 years	rr_ExpenseExampleNoRedemptionYear05	1,131
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,806
1 year	rr_AverageAnnualReturnYear01	6.11%
5 years	rr_AverageAnnualReturnYear05		[5]
10 years	rr_AverageAnnualReturnYear10		[5]
Since inception	rr_AverageAnnualReturnSinceInception	7.41%
Inception date	rr_AverageAnnualReturnInceptionDate	Aug. 16, 2013
ClearBridge Large Cap Value 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)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[2]
Small account fee ($)	rr_MaximumAccountFee	$ 15	[4]
Management fees	rr_ManagementFeesOverAssets	0.48%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.17%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.65%
1 year	rr_ExpenseExampleYear01	$ 268
3 years	rr_ExpenseExampleYear03	520
5 years	rr_ExpenseExampleYear05	896
10 years	rr_ExpenseExampleYear10	1,953
1 year	rr_ExpenseExampleNoRedemptionYear01	168
3 years	rr_ExpenseExampleNoRedemptionYear03	520
5 years	rr_ExpenseExampleNoRedemptionYear05	896
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,953
1 year	rr_AverageAnnualReturnYear01	10.92%
5 years	rr_AverageAnnualReturnYear05	12.42%
10 years	rr_AverageAnnualReturnYear10	5.03%
ClearBridge Large Cap Value 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)	rr_MaximumDeferredSalesChargeOverOther	none	[2]
Small account fee ($)	rr_MaximumAccountFee	none	[4]
Management fees	rr_ManagementFeesOverAssets	0.48%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.23%	[6]
Total annual fund operating expenses	rr_ExpensesOverAssets	0.96%
1 year	rr_ExpenseExampleYear01	$ 98
3 years	rr_ExpenseExampleYear03	306
5 years	rr_ExpenseExampleYear05	531
10 years	rr_ExpenseExampleYear10	1,177
1 year	rr_ExpenseExampleNoRedemptionYear01	98
3 years	rr_ExpenseExampleNoRedemptionYear03	306
5 years	rr_ExpenseExampleNoRedemptionYear05	531
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,177
ClearBridge Large Cap Value 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)	rr_MaximumDeferredSalesChargeOverOther	none	[2]
Small account fee ($)	rr_MaximumAccountFee	none	[4]
Management fees	rr_ManagementFeesOverAssets	0.48%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	0.12%
Total annual fund operating expenses	rr_ExpensesOverAssets	1.10%
1 year	rr_ExpenseExampleYear01	$ 112
3 years	rr_ExpenseExampleYear03	350
5 years	rr_ExpenseExampleYear05	607
10 years	rr_ExpenseExampleYear10	1,341
1 year	rr_ExpenseExampleNoRedemptionYear01	112
3 years	rr_ExpenseExampleNoRedemptionYear03	350
5 years	rr_ExpenseExampleNoRedemptionYear05	607
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,341
1 year	rr_AverageAnnualReturnYear01	12.50%
5 years	rr_AverageAnnualReturnYear05		[5]
10 years	rr_AverageAnnualReturnYear10		[5]
Since inception	rr_AverageAnnualReturnSinceInception	7.07%
Inception date	rr_AverageAnnualReturnInceptionDate	Dec. 19, 2013
ClearBridge Large Cap Value 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)	rr_MaximumDeferredSalesChargeOverOther	none	[2]
Small account fee ($)	rr_MaximumAccountFee	none	[4]
Management fees	rr_ManagementFeesOverAssets	0.48%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.10%
Total annual fund operating expenses	rr_ExpensesOverAssets	0.58%
1 year	rr_ExpenseExampleYear01	$ 59
3 years	rr_ExpenseExampleYear03	186
5 years	rr_ExpenseExampleYear05	323
10 years	rr_ExpenseExampleYear10	725
1 year	rr_ExpenseExampleNoRedemptionYear01	59
3 years	rr_ExpenseExampleNoRedemptionYear03	186
5 years	rr_ExpenseExampleNoRedemptionYear05	323
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 725
2007	rr_AnnualReturn2007	3.75%
2008	rr_AnnualReturn2008	(35.23%)
2009	rr_AnnualReturn2009	24.04%
2010	rr_AnnualReturn2010	9.57%
2011	rr_AnnualReturn2011	4.79%
2012	rr_AnnualReturn2012	16.57%
2013	rr_AnnualReturn2013	32.17%
2014	rr_AnnualReturn2014	11.79%
2015	rr_AnnualReturn2015	(2.71%)
2016	rr_AnnualReturn2016	13.13%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	16.08%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(19.93%)
1 year	rr_AverageAnnualReturnYear01	13.13%
5 years	rr_AverageAnnualReturnYear05	13.65%
10 years	rr_AverageAnnualReturnYear10	6.14%
ClearBridge Large Cap Value 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)	rr_MaximumDeferredSalesChargeOverOther	none	[2]
Small account fee ($)	rr_MaximumAccountFee	none	[4]
Management fees	rr_ManagementFeesOverAssets	0.48%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.03%
Total annual fund operating expenses	rr_ExpensesOverAssets	0.51%
1 year	rr_ExpenseExampleYear01	$ 52
3 years	rr_ExpenseExampleYear03	163
5 years	rr_ExpenseExampleYear05	284
10 years	rr_ExpenseExampleYear10	639
1 year	rr_ExpenseExampleNoRedemptionYear01	52
3 years	rr_ExpenseExampleNoRedemptionYear03	163
5 years	rr_ExpenseExampleNoRedemptionYear05	284
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 639
1 year	rr_AverageAnnualReturnYear01	13.19%
5 years	rr_AverageAnnualReturnYear05		[5]
10 years	rr_AverageAnnualReturnYear10		[5]
Since inception	rr_AverageAnnualReturnSinceInception	9.27%
Inception date	rr_AverageAnnualReturnInceptionDate	Oct. 16, 2013
ClearBridge Large Cap Value Fund | Class 1
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice		[5]
Maximum deferred sales charge (load) (as a % of the lower of net asset value at purchase or redemption)	rr_MaximumDeferredSalesChargeOverOther		[2],[5]
Small account fee ($)	rr_MaximumAccountFee	$ 15	[4]
Management fees	rr_ManagementFeesOverAssets	0.48%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.21%
Total annual fund operating expenses	rr_ExpensesOverAssets	0.69%
1 year	rr_ExpenseExampleYear01	$ 70
3 years	rr_ExpenseExampleYear03	221
5 years	rr_ExpenseExampleYear05	384
10 years	rr_ExpenseExampleYear10	859
1 year	rr_ExpenseExampleNoRedemptionYear01	70
3 years	rr_ExpenseExampleNoRedemptionYear03	221
5 years	rr_ExpenseExampleNoRedemptionYear05	384
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 859
1 year	rr_AverageAnnualReturnYear01	12.98%
5 years	rr_AverageAnnualReturnYear05		[5]
10 years	rr_AverageAnnualReturnYear10		[5]
Since inception	rr_AverageAnnualReturnSinceInception	9.72%
Inception date	rr_AverageAnnualReturnInceptionDate	Aug. 16, 2013
ClearBridge Large Cap Value Fund | Return after taxes on distributions | Class I
Risk/Return:	rr_RiskReturnAbstract
1 year	rr_AverageAnnualReturnYear01	12.49%
5 years	rr_AverageAnnualReturnYear05	12.83%
10 years	rr_AverageAnnualReturnYear10	5.28%
ClearBridge Large Cap Value Fund | Return after taxes on distributions and sale of fund shares | Class I
Risk/Return:	rr_RiskReturnAbstract
1 year	rr_AverageAnnualReturnYear01	7.91%
5 years	rr_AverageAnnualReturnYear05	10.67%
10 years	rr_AverageAnnualReturnYear10	4.58%
ClearBridge Large Cap Value Fund | Russell 1000 Value Index (reflects no deduction for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 year	rr_AverageAnnualReturnYear01	17.34%	[7]
5 years	rr_AverageAnnualReturnYear05	14.80%	[7]
10 years	rr_AverageAnnualReturnYear10	5.72%	[7]
ClearBridge Large Cap Value Fund | S&P 500 Index (reflects no deduction for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 year	rr_AverageAnnualReturnYear01	11.96%	[8]
5 years	rr_AverageAnnualReturnYear05	14.66%	[8]
10 years	rr_AverageAnnualReturnYear10	6.95%	[8]

[1] The sales charge is waived for shareholders purchasing Class A shares through accounts where LMIS is the broker-dealer of record ("LMIS Accounts").

[2] Maximum deferred sales charge (load) may be reduced over time.

[3] You may buy Class A shares or Class A2 shares in amounts of $1,000,000 or more at net asset value (without an initial sales charge), but if you redeem those shares within 18 months of their purchase, you will pay a contingent deferred sales charge of 1.00%.

[4] 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.

[5] N/A

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

[7] For Class A2, Class R, Class IS and Class 1 shares, each for the period from the class' inception date to December 31, 2016, the average annual total return of the Russell 1000 Value Index was 10.85%, 9.21%, 10.29% and 10.85%, respectively.

[8] For Class A2, Class R, Class IS and Class 1 shares, each for the period from the class' inception date to December 31, 2016, the average annual total return of the S&P 500 Index was 11.66%, 9.55%, 10.84% and 11.66%, respectively.