CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2016	Jun. 30, 2015
Statement Of Financial Position [Abstract]
Trade receivables allowance	$ 4.7	$ 3.4
Preferred Stock, par value	$ 0.001	$ 0.001
Preferred Stock, shares authorized	50,000,000	50,000,000
Preferred Stock, shares issued	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	850,000,000	850,000,000
Common stock, shares issued	242,228,906	243,008,679
Common stock, shares outstanding	242,228,906	243,008,679