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Derivative Financial Instruments (Schedule Of Recognized Pre-Tax Gains (Losses) In Consolidated Statements Of Income) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Mar. 31, 2012 | Mar. 31, 2011 | Mar. 31, 2010
Forward Foreign Exchange Contracts [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains recognized in other income (expense), net |  | $ 3,206 |
Gains recognized in cost of revenues |  | 1,514 |
Gains reclassified from other comprehensive income to other income (expense) on discontinued cash flow hedges |  | 1,560 |
Total |  | 6,280 |
Forward Foreign Exchange Contracts Related To Non- Functional Currency Receivable Balances [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains recognized in other income (expense), net | $ 1,734 | $ 6,666 | $ (3,345)

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- Definition Derivative instruments, gain (loss) recognized in cost of revenue. + References No definition available. + Details
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- Definition Derivative instruments, gain (loss) recognized in other income (expense), net. + References No definition available. + Details
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- Definition Derivative instruments, gains (loss )reclassified from other comprehensive income to other income (expense) on discontinued cash flow hedges. + References No definition available. + Details
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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5618551-113959 + Details
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