Property, Plant and Equipment, Net - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Accounting Policies [Abstract]
Depreciation and amortization expense for Property, plant and equipment	$ 38.7	$ 38.0	$ 35.5
Reduction in property, plant, and equipment	24.2	1.9
Reduction in accumulated depreciation	$ 24.2	$ 1.9