Commitments and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013	Jan. 14, 2008
Loss Contingencies [Line Items]
Adverse effect on earnings per share resulting from changing sales forecasts				$ 1.00
Costs relating to delayed delivery of product	$ 30,500,000
Gain relating to contingency		$ 6,100,000	$ 0
Potential payments remitted during period	0	$ 12,000,000
Amount of potential liability	0
Cost of Sales [Member]
Loss Contingencies [Line Items]
Reduction in estimated accruals	$ 17,300,000