CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2015	Jun. 30, 2014
Statement of Financial Position [Abstract]
Allowance for doubtful accounts (in dollars)	$ 3.8	$ 3.4
Common stock, authorized shares	100,000,000	100,000,000
Common stock, issued shares	55,234,942	55,161,875
Common stock, outstanding shares	50,318,244	53,137,144
Common stock in treasury, shares	4,916,698	2,024,731