Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Oct. 31, 2011
Changes in carrying amount of goodwill
Balance as of July 31, 2011	$ 800,343
Translation adjustments	(8,040)
Balance as of October 31, 2011	792,303
Americas [Member]
Changes in carrying amount of goodwill
Balance as of July 31, 2011	425,578
Translation adjustments	(3,045)
Balance as of October 31, 2011	422,533
Europe [Member]
Changes in carrying amount of goodwill
Balance as of July 31, 2011	171,238
Translation adjustments	(3,048)
Balance as of October 31, 2011	168,190
Asia-Pacific [Member]
Changes in carrying amount of goodwill
Balance as of July 31, 2011	203,527
Translation adjustments	(1,947)
Balance as of October 31, 2011	$ 201,580

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

- Definition

The increase (decrease) in the recorded value of goodwill for foreign currency translation adjustments and purchase accounting adjustments needed to revise the carrying amount of goodwill to fair value.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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+ Details