Supplemental Balance Sheet Information (Property, Plant and Equipment) (Details) - USD ($) $ in Millions	Apr. 30, 2020	Jul. 31, 2019
Property, Plant and Equipment
Less: accumulated depreciation	$ (872.0)	$ (831.2)
Property, plant and equipment, net	614.3	588.9
Land
Property, Plant and Equipment
Property, plant and equipment, gross	23.7	24.2
Buildings
Property, Plant and Equipment
Property, plant and equipment, gross	346.3	325.3
Machinery and equipment
Property, Plant and Equipment
Property, plant and equipment, gross	834.9	813.5
Computer software
Property, Plant and Equipment
Property, plant and equipment, gross	143.9	142.8
Construction in progress
Property, Plant and Equipment
Property, plant and equipment, gross	$ 137.5	$ 114.3

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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