Supplemental Balance Sheet Information (Property, Plant and Equipment) (Details) - USD ($) $ in Millions	Oct. 31, 2020	Jul. 31, 2020
Property, Plant and Equipment
Less: accumulated depreciation	$ (919.9)	$ (906.1)
Property, plant and equipment, net	617.1	631.6
Land
Property, Plant and Equipment
Property, plant and equipment, gross	24.8	24.9
Buildings
Property, Plant and Equipment
Property, plant and equipment, gross	384.8	384.5
Machinery and equipment
Property, Plant and Equipment
Property, plant and equipment, gross	906.2	880.1
Computer software
Property, Plant and Equipment
Property, plant and equipment, gross	143.8	145.4
Construction in progress
Property, Plant and Equipment
Property, plant and equipment, gross	$ 77.4	$ 102.8

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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