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Derivative Financial Instruments (Tables)
6 Months Ended
Sep. 30, 2011
Derivative Financial Instruments [Abstract] 
Schedule Of Derivative Instruments, Gains (Losses) Not Designated As Hedging Instruments
                     
    Amount of Gain (Loss) Recognized in Income on Derivative
  Location of Gain (Loss)
Recognized in Income on
Derivative
Three Months Ended
September 30,
Six Months Ended
September 30,
    2011 2010 2011 2010
Foreign currency forward contracts not
designated as hedging instruments
Interest and other income
(expense), net
$ 16 $ (7 ) $ 14 $ (5 )