CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Comprehensive Income Net Of Tax [Abstract]
Net (loss)/income	$ (10.8)	$ 3.8	$ (26.0)	$ (106.7)
Foreign currency translation adjustments	(7.7)	(8.7)	(11.7)	(21.0)
Comprehensive loss	$ (18.5)	$ (4.9)	$ (37.7)	$ (127.7)