Supplemental Balance Sheet Information (Property, Plant and Equipment) (Details) - USD ($) $ in Millions	Jan. 31, 2021	Jul. 31, 2020
Property, Plant and Equipment, Net
Less: accumulated depreciation	$ (954.7)	$ (906.1)
Total property, plant and equipment, net	624.3	631.6
Land
Property, Plant and Equipment, Net
Property, plant and equipment, gross	25.5	24.9
Buildings
Property, Plant and Equipment, Net
Property, plant and equipment, gross	397.4	384.5
Machinery and equipment
Property, Plant and Equipment, Net
Property, plant and equipment, gross	931.4	880.1
Computer software
Property, Plant and Equipment, Net
Property, plant and equipment, gross	145.0	145.4
Construction in progress
Property, Plant and Equipment, Net
Property, plant and equipment, gross	$ 79.7	$ 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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