TREASURY STOCK (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jan. 31, 2015	Jul. 31, 2014
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Amount Available for Repurchase	$ 577,768	$ 681,873
Stock Repurchase Program [Roll Forward]
New authorizations	200,000
Utilized	(304,105)
January 17, 2013 Authorization [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Amount Available for Repurchase	0	81,873
Stock Repurchase Program [Roll Forward]
New authorizations	0
Utilized	(81,873)
July 17, 2014 Authorization [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Amount Available for Repurchase	377,768	600,000
Stock Repurchase Program [Roll Forward]
New authorizations	0
Utilized	(222,232)
October 9, 2014 Authorization [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Amount Available for Repurchase	200,000	0
Stock Repurchase Program [Roll Forward]
New authorizations	200,000
Utilized	$ 0