GOODWILL AND INTANGIBLE ASSETS (Details 1) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2015	Jul. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross	$ 342,346	$ 352,104
Accumulated Amortization	119,705	109,681
Net	222,641us-gaap_FiniteLivedIntangibleAssetsNet	242,423us-gaap_FiniteLivedIntangibleAssetsNet
Patents and unpatented technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	158,142	165,727
Accumulated Amortization	67,563	66,126
Net	90,579	99,601
Customer-related intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	164,171	165,759
Accumulated Amortization	41,638	33,845
Net	122,533	131,914
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	16,524	16,971
Accumulated Amortization	7,901	7,130
Net	8,623	9,841
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	3,509	3,647
Accumulated Amortization	2,603	2,580
Net	$ 906	$ 1,067

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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