Organization and Summary of Significant Accounting Policies - Schedule of Cumulative Translation Adjustments Included in Other Comprehensive Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent [Abstract]
Beginning Balance	$ (7.0)
Period translation adjustments	(2.6)	$ (5.2)	$ (1.7)
Ending balance	$ (9.6)	$ (7.0)