Property, Plant and Equipment, net - Schedule of Property, Plant and Equipment, Net (Detail) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2015	Jun. 30, 2015
Property, Plant and Equipment [Line Items]
Land	$ 9,559	$ 9,742
Buildings and improvements	259,381	260,074
Machinery and equipment	1,313,974	1,270,650
Furniture and fixtures	26,332	30,492
Property, plant and equipment, gross	1,609,246	1,570,958
Less accumulated depreciation and amortization	(1,053,950)	(1,018,537)
Property, plant and equipment, net	$ 555,296	$ 552,421
Buildings and Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	1 year
Buildings and Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	50 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	20 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	10 years