Financial Instruments (Schedule Of Derivative Instruments In The Consolidated Balance Sheets Utilized For Foreign Currency Risk Management Purposes) (Details) (Foreign Currency Contracts [Member], USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Mar. 31, 2011
Other Current Liabilities [Member] | Derivatives Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 1,905	$ 778
Other Current Liabilities [Member] | Derivatives Not Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	6,200	6,122
Other Current Assets [Member] | Derivatives Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	10,105	19,579
Other Current Assets [Member] | Derivatives Not Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 10,894	$ 4,492