Goodwill and Other Intangible Assets (Reconciliation of Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 128.9	$ 123.8
Accumulated Amortization	$ (61.6)	(52.9)
Customer relationships
Finite-Lived Intangible Assets
Weighted Average Useful Life (years)	12 years 3 months 18 days
Gross Carrying Amount	$ 105.2	101.5
Accumulated Amortization	$ (50.0)	(43.3)
Patents, trademarks and technology
Finite-Lived Intangible Assets
Weighted Average Useful Life (years)	7 years 6 months
Gross Carrying Amount	$ 23.7	22.3
Accumulated Amortization	$ (11.6)	$ (9.6)