TREASURY STOCK TREASURY STOCK (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2013	Jul. 31, 2013
Stock Repurchase Program [Roll Forward]
Amount available for repurchases as of July 31, 2013	$ 206,873	$ 331,873
New authorizations	0
Utilized	125,000
Amount available for repurchases as of October 31, 2013	206,873	331,873
September 26, 2011 Authorization [Member]
Stock Repurchase Program [Roll Forward]
Amount available for repurchases as of July 31, 2013	0	81,873
New authorizations	0
Utilized	81,873
Amount available for repurchases as of October 31, 2013	0	81,873
January 17, 2013 Authorization [Member]
Stock Repurchase Program [Roll Forward]
Amount available for repurchases as of July 31, 2013	206,873	250,000
New authorizations	0
Utilized	43,127
Amount available for repurchases as of October 31, 2013	$ 206,873	$ 250,000