DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Jul. 31, 2012
Long-term Debt [Member]
Nonderivative instruments designated as hedging instruments
Net investment hedge	$ 92,070	$ 115,129
Foreign Exchange Forward [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts	2,537	3,778
Foreign Exchange Forward [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts	2,024	1,457
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts	165	270
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts	1,433	0
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts	2,372	3,508
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts	$ 591	$ 1,457