Supplemental Balance Sheet Information (Inventory) (Details) - USD ($) $ in Millions	Apr. 30, 2019	Aug. 01, 2018	Jul. 31, 2018
Assets [Abstract]
Raw materials	$ 119.9		$ 128.7
Work in process	36.0		27.4
Finished products	203.6		178.0
Inventories, net	$ 359.5	$ 326.8	$ 334.1

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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