Goodwill and Other Intangible Assets (Reconciliation of Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 123.8	$ 106.7
Accumulated Amortization	$ (52.9)	(71.1)
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	10 years
Gross Carrying Amount	$ 101.5	63.0
Accumulated Amortization	$ (43.3)	(35.7)
Patents, Trademarks and Technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	6 years 2 months 12 days
Gross Carrying Amount	$ 22.3	43.7
Accumulated Amortization	$ (9.6)	$ (35.4)