COMMON STOCK (Details 3) (USD $)	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value at grant date (in dollars per share)	$ 18.34	$ 14.13	$ 15.78
Stock Options [Member]
Valuation assumptions:
Expected dividend yield	1.50%	2.00%	1.90%
Expected volatility	37.60%	38.60%	36.80%
Expected life (years)	4 years 9 months	5 years	5 years
Risk-free interest rate	0.70%	0.80%	1.80%
ESPP Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in dollars per share)		$ 13.06	$ 11.66
Valuation assumptions:
Expected dividend yield		1.40%	1.50%
Expected volatility		41.50%	31.40%
Expected life (years)		0 years 6 months	0 years 6 months
Risk-free interest rate		0.10%	0.10%