Goodwill and Intangible Assets (Reconciliation of Intangible Assets) (Details) - USD ($) $ in Millions	Jan. 31, 2021	Jul. 31, 2020
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 131.5	$ 128.9
Accumulated Amortization	(66.2)	(61.6)
Total	65.3	67.3
Customer relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	107.2	105.2
Accumulated Amortization	(53.4)	(50.0)
Total	53.8	55.2
Patents, trademarks and technology
Finite-Lived Intangible Assets
Gross Carrying Amount	24.3	23.7
Accumulated Amortization	(12.8)	(11.6)
Total	$ 11.5	$ 12.1