COMMON STOCK (Details 5) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jul. 31, 2013
Shares
Outstanding at August 1, 2012 (in shares)	2,651
Granted (in shares)	569
Exercised (in shares)	(910)
Forfeited or Expired (in shares)	(101)
Outstanding at July 31, 2013 (in shares)	2,209
Expected to vest at July 31, 2012 (in shares)	1,374
Exercisable at July 31, 2012 (in shares)	815
Weighted- Average Exercise Price
Weighted-Average Exercise Price, Outstanding at August 1, 2012 (in dollars per share)	$ 40.03
Weighted-Average Exercise Price, Granted (in dollars per share)	$ 64.69
Weighted-Average Exercise Price, Exercised (in dollars per share)	$ 32.18
Weighted-Average Exercise Price, Forfeited or Expired (in dollars per share)	$ 46.22
Weighted-Average Exercise Price, Outstanding at July 31, 2013 (in dollars per share)	$ 49.31
Weighted-Average Exercise Price, Expected to vest at July 31, 2013 (in dollars per share)	$ 54.55
Weighted-Average Exercise Price, Exercisable at July 31, 2013 (in dollars per share)	$ 40.18
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted-Average Remaining Contractual Term, Outstanding ending balance (in years)	4 years 8 months 12 days
Weighted-Average Remaining Contractual Term, Expected to vest at July 31, 2013 (in years)	5 years 6 months
Weighted-Average Remaining Contractual Term, Exercisable at July 31, 2013 (in years)	3 years 4 months 24 days
Aggregate Instrinsic Value, Outstanding at July 31, 2013	$ 45,637
Aggregate Instrinsic Value, Expected to vest at July 31, 2013	21,199
Aggregate Instrinsic Value, Exercisable at July 31, 2013	$ 24,263