Commitments and Contingencies - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Jan. 14, 2008
Commitments and Contingencies Disclosure [Abstract]
Adverse effect on earnings per share resulting from changing sales forecasts					$ 1.00
Gains relating to contingency	$ 0.0	$ 0.0	$ 3.9	$ 3.9
Costs relating to delayed delivery of product	$ 10.0	$ 10.0	$ 14.7	$ 14.7