DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details Textuals)	3 Months Ended	6 Months Ended
	Jan. 31, 2012 USD ($)	Jan. 31, 2012 USD ($)	Jan. 31, 2012 JPY (¥)
Derivative instruments and hedging activities [Line Items]
Notional amount of foreign currency forward contracts entered during the period	$ 489,067,000	$ 1,371,611,000
Notional amount of foreign currency forward contracts	255,994,000	255,994,000
Notional amount of derivative instruments designated as net investment hedges			¥ 9,000,000,000