Equity Based Compensation (Summary Of Stock Option Activity) (Details) - $ / shares	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options Outstanding, Beginning Balance (in shares)	6,822,390	7,191,442	7,197,882
Granted (in shares)	888,500	969,450	1,023,836
Exercised (in shares)	(978,193)	(916,789)	(916,566)
Canceled (in shares)	(47,146)	(421,713)	(113,710)
Options Outstanding, Ending Balance (in shares)	6,685,551	6,822,390	7,191,442
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price, Beginning Balance (in dollars per share)	$ 30.09	$ 29.38	$ 26.84
Granted (in dollars per share)	42.65	28.19	38.58
Exercised (in dollars per share)	24.04	19.39	18.54
Canceled (in dollars per share)	36.51	36.95	38.67
Weighted Average Exercise Price, Ending Balance (in dollars per share)	$ 32.60	$ 30.09	$ 29.38