Additional Derivatives And Hedging Activities Textual Abstract.

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Amount outstanding forward foreign exchange contracts including certain specific contracts.

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Derivatives And Hedging Activities Textual Abstract.

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The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 21
-Paragraph 16, 20

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value of a derivative asset (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 205G

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44C
-Subparagraph a
-Clause 1

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Fair value of a derivative asset that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of a derivative liability (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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The estimated net amount of unrealized gains (losses) on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 45
-Subparagraph b(2)

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Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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Aggregate notional amount of all derivatives designated as a hedge of a net investment in a foreign operation. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

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Derivatives and Hedging Activities (Details Textual)	Jul. 31, 2011 USD ($)	Jul. 31, 2010 USD ($)	Jul. 31, 2011 Foreign Exchange Contract [Member] Prepaid expenses and other current assets [Member] Cash Flow Hedging [Member] USD ($)	Jul. 31, 2010 Foreign Exchange Contract [Member] Prepaid expenses and other current assets [Member] Cash Flow Hedging [Member] USD ($)	Jul. 31, 2011 Foreign Exchange Contract [Member] Other Current Liabilities [Member] USD ($)	Jul. 31, 2011 Foreign Exchange Contract [Member] Other Current Liabilities [Member] Cash Flow Hedging [Member] USD ($)	Jul. 31, 2010 Foreign Exchange Contract [Member] Other Current Liabilities [Member] Cash Flow Hedging [Member] USD ($)	May 13, 2010 Senior Unsecured Notes [Member] EUR (€)
Additional Derivatives and Hedging Activities (Textual) [Abstract]
Forward exchange contracts designated as cash flow hedges	$ 16,000	$ 156,000	$ 16,000	$ 156,000
Forward exchange contracts not designated as hedging instruments	3,000	24,000	3,000	24,000
Forward exchange contracts designated as hedge instruments	114,110,000	98,576,000			5,295,000	830,000	829,000
Debt Instrument [Line Items]
Private Placement in Euros/Dollars								75,000,000
Derivatives and Hedging Activities (Textual) [Abstract]
Notional amount of outstanding forward exchange contracts	80,807,000	45,328,000
Unrealized losses on foreign currency cash flow hedges expected to be reclassified to earnings within the next twelve months	1,535,000	493,000
Outstanding forward foreign exchange contracts including certain specific contracts	30,519,000	32,020,000
Outstanding forward foreign exchange contracts	$ 50,000,000