Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Raw materials	$ 92.5	$ 113.4
Work in process	18.4	22.6
Finished products	123.2	129.0
Total inventories	234.1	265.0
Property, Plant and Equipment [Line Items]
Less: accumulated depreciation	(680.8)	(657.5)
Net property, plant and equipment	469.8	470.6	$ 451.7
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment	20.0	20.0
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment	280.4	272.6
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment	810.9	783.1
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 39.3	$ 52.4

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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