CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
CONSOLIDATED BALANCE SHEETS
Allowance for doubtful accounts (in dollars)	$ 4.9	$ 2.7
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	54,809,735	54,730,291
Common stock, shares outstanding	52,412,967	44,107,380
Common stock in treasury, shares	2,396,768	10,622,911