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Derivatives and Hedging Activities - Fair Values of Derivative Instruments in Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified | Oct. 31, 2014 | Jul. 31, 2014
--- | --- | ---
Designated as hedging instruments [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Asset Derivatives | $ 568 | $ 0
Liability Derivatives | 94,590 | 100,424
Not designated as hedging Instruments [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Asset Derivatives | 100 | 166
Liability Derivatives | 333 | 375
Prepaid expenses and other current assets [Member] | Foreign exchange contract [Member] | Not designated as hedging Instruments [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Asset Derivatives | 100 | 166
Other current liabilities [Member] | Foreign exchange contract [Member] | Not designated as hedging Instruments [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Liability Derivatives | 333 | 375
Cash flow hedging | Prepaid expenses and other current assets [Member] | Foreign exchange contract [Member] | Designated as hedging instruments [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Asset Derivatives | 544 | 0
Cash flow hedging | Other current liabilities [Member] | Foreign exchange contract [Member] | Designated as hedging instruments [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Liability Derivatives | 0 | 0
Net investment hedging [Member] | Prepaid expenses and other current assets [Member] | Foreign exchange contract [Member] | Designated as hedging instruments [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Asset Derivatives | 24 | 0
Net investment hedging [Member] | Prepaid expenses and other current assets [Member] | Foreign currency denominated debt [Member] | Designated as hedging instruments [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Asset Derivatives | 0 | 0
Net investment hedging [Member] | Other current liabilities [Member] | Foreign exchange contract [Member] | Designated as hedging instruments [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Liability Derivatives | 0 | 14
Net investment hedging [Member] | Long term obligations less current maturities [Member] | Foreign currency denominated debt [Member] | Designated as hedging instruments [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Liability Derivatives | $ 94,590 | $ 100,410

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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226000-175313 + Details
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- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226000-175313 + Details
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