CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands	12 Months Ended
Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2009
NET INCOME (LOSS)	$ 245,763	$ 210,980	$ (1,964,994)
Other comprehensive income:
Foreign currency translation adjustment	35,159	61,029	(86,713)
Unrealized gains (losses) on investment securities:
Unrealized holding gains (losses) net of tax provision (benefit) of $(22), $(9) and $9, respectively	(33)	(13)	13
Reclassification adjustment for (gains) losses included in net income	8	(5)	48
Net unrealized gains (losses) on investment securities	(25)	(18)	61
Unrealized and realized gains (losses) on cash flow hedge, net of tax provision of $666			938
Total other comprehensive income (loss)	35,134	61,011	(85,714)
COMPREHENSIVE INCOME (LOSS)	280,897	271,991	(2,050,708)
Less: Comprehensive income attributable to noncontrolling interests	(8,160)	6,623	2,924
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO LEGG MASON, INC.	$ 289,057	$ 265,368	$ (2,053,632)

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to noncontrolling interests, if any. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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Gross appreciation or the gross loss in value of the total unsold securities at the end of an accounting period, after tax.

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Reclassification adjustment for unrealized gains or losses realized upon the sale of securities, after tax.

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Appreciation or loss in value (before reclassification adjustment) of the total of unsold securities during the period being reported on, net of tax. Reclassification adjustments include: (1) the unrealized holding gain or loss, net of tax, at the date of the transfer for a debt security from the held-to-maturity category transferred into the available-for-sale category. Also includes the unrealized gain or loss at the date of transfer for a debt security from the available-for-sale category transferred into the held-to-maturity category; (2) the unrealized gains or losses realized upon the sale of securities, after tax; and (3) the unrealized gains or losses realized upon the write-down of securities, after tax.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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