Supplemental Balance Sheet Information - Work-in-Process and Finished Goods Inventories Include Raw Materials, Labor and Overhead (Detail) - USD ($) $ in Millions	Jun. 30, 2017	Jun. 30, 2016
Balance Sheet Related Disclosures [Abstract]
Raw materials and supplies	$ 107.5	$ 88.7
Work-in-process	42.8	30.7
Finished goods	56.7	55.2
Total inventory, gross	207.0	174.6
Inventory reserve	(22.1)	(19.8)
Inventories	$ 184.9	$ 154.8

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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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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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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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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Amount of valuation reserve for inventory.

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

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