Stock-Based Compensation (Summary of Stock Option Activity) (Details) - $ / shares	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Options
Beginning Balance (in shares)	6,444,743	6,533,979	6,531,250
Granted (in shares)	898,726	1,004,631	944,094
Exercised (in shares)	(365,267)	(1,030,938)	(845,086)
Expired/forfeited (in shares)	(51,041)	(62,929)	(96,279)
Ending Balance (in shares)	6,927,161	6,444,743	6,533,979
Weighted Average Exercise Price
Beginning Balance (in dollars per share)	$ 44.05	$ 42.44	$ 39.66
Granted (in dollars per share)	59.18	46.61	51.94
Exercised (in dollars per share)	37.02	36.00	30.35
Expired/forfeited (in dollars per share)	53.15	49.95	52.72
Ending Balance (in dollars per share)	$ 46.32	$ 44.05	$ 42.44