Goodwill and Other Intangible Assets (Reconciliation of Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Finite-lived Intangible Assets [Roll Forward]
Beginning balance, Gross Carrying Amount	$ 96.8	$ 87.1
Beginning balance, Accumulated Amortization	(58.3)	(49.2)
Beginning Balance, Net Intangible Assets	38.5	37.9
Intangibles acquired	8.6	6.6
Amortization expense	(6.4)	(6.1)
Foreign exchange translation, Gross Carrying Amount	1.2	3.1
Foreign exchange translation, Accumulated Amortization	(1.3)	(3.0)
Foreign exchange translation, Net Intangible Assets	(0.1)	0.1
Ending balance, Gross Carrying Amount	106.6	96.8
Ending balance, Accumulated Amortization	(66.0)	(58.3)
Ending balance, Net Intangible Assets	$ 40.6	$ 38.5