Derivatives and Hedging (Details 2) (Legg Mason, Inc., USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2013
Forward foreign currency contracts
Derivative
Currency forward contracts with aggregate gross asset fair values	$ 4,447	$ 1,496
Currency forward contracts with aggregate gross liability fair values	1,380	101
Futures contract
Derivative
Open futures contracts with aggregate gross asset fair values	744	443
Open futures contracts with aggregate gross liability fair values	684	680
Derivatives - Total
Derivative
Derivative Assets	5,191	1,939
Derivative Liabilities	$ 2,064	$ 781

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Fair value before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 7

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-Paragraph 3

-Subparagraph (a)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (a),(c)

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Fair value as of the balance sheet date of all foreign currency derivative assets not designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(2)

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