Supplemental Balance Sheet Information - Property and Equipment (Detail) - USD ($) $ in Millions		Jun. 30, 2015	Jun. 30, 2014
Balance Sheet Related Disclosures [Abstract]
Land, buildings and improvements		$ 637.6	$ 619.0
Machinery, equipment and capitalized software		727.9	683.6
Furniture and fixtures		10.1	8.1
Construction in progress		97.6	110.9
Property and equipment, at cost		1,473.2	1,421.6
Accumulated depreciation		(588.0)	(548.6)
Property, plant, and equipment, net	[1]	$ 885.2	$ 873.0

[1] Long-lived assets include property and equipment, net of accumulated depreciation.