Employee Benefit Plans (Weighted Average Actuarial Assumptions To Determine Net Periodic Benefit Cost) (Details)	12 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2009
All U.S. Plans [Member]
Discount rate	5.25%	6.00%	6.00%
Expected return on plan assets	8.00%	8.50%	8.50%
Rate of compensation increase	5.00%	5.00%	5.00%
Non - U.S. Plans [Member]
Discount rate	5.17%	5.90%	6.30%
Expected return on plan assets	6.17%	6.64%	7.14%
Rate of compensation increase	3.69%	3.87%	4.48%