Supplemental Balance Sheet Information - Work-in-Process and Finished Goods Inventories Include Raw Materials, Labor and Overhead (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Balance Sheet Related Disclosures [Abstract]
Raw materials and supplies	$ 76.9	$ 84.1
Work-in-process	26.3	23.8
Finished goods	43.8	39.8
Total inventory, gross	147.0	147.7
Inventory reserve	(14.1)	(12.9)	$ (11.8)	$ (8.5)
Inventories	$ 132.9	$ 134.8

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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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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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