Supplemental Balance Sheet Information - Property and Equipment (Detail) - USD ($) $ in Millions		Jun. 30, 2017	Jun. 30, 2016
Balance Sheet Related Disclosures [Abstract]
Land, buildings and improvements		$ 735.2	$ 649.6
Machinery, equipment and capitalized software		825.0	757.1
Furniture and fixtures		10.1	9.9
Construction in progress		137.4	134.1
Property and equipment, at cost		1,707.7	1,550.7
Accumulated depreciation		(711.8)	(644.9)
Property, plant, and equipment, net	[1]	$ 995.9	$ 905.8

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