COMMON STOCK (Details 3) (USD $)	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value at grant date (in dollars per share)	$ 16.72	$ 18.34	$ 14.13
Stock Options [Member]
Valuation assumptions:
Expected dividend yield	1.50%	1.50%	2.00%
Expected volatility	25.90%	37.60%	38.60%
Expected life (years)	4 years 6 months	4 years 9 months	5 years
Risk-free interest rate	1.50%	0.70%	0.80%
ESPP Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in dollars per share)			$ 13.06
Valuation assumptions:
Expected dividend yield			1.40%
Expected volatility			41.50%
Expected life (years)			0 years 6 months
Risk-free interest rate			0.10%