DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details Textuals)	3 Months Ended	9 Months Ended
	Apr. 30, 2012 USD ($)	Apr. 30, 2012 USD ($)	Apr. 30, 2012 JPY (¥)
Derivative instruments and hedging activities [Line Items]
Notional amount of foreign currency forward contracts entered during the period	$ 522,774,000	$ 1,894,385,000
Notional amount of foreign currency forward contracts	244,047,000	244,047,000
Notional amount of derivative instruments designated as net investment hedges			¥ 9,000,000,000