Income Taxes (Components Of The Provision For Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2016
Current
Federal	$ 100.0	$ 38.9	$ 19.9
State	5.3	4.3	3.1
Foreign	71.0	56.6	46.9
Income tax provision (benefit), current	176.3	99.8	69.9
Deferred
Federal	6.5	(7.7)	(0.3)
State	0.2	(0.4)	(0.2)
Foreign	0.3	(2.5)	(2.8)
Income tax provision (benefit), deferred	7.0	(10.6)	(3.3)
Total	$ 183.3	$ 89.2	$ 66.6