Condensed Consolidated and Combined Balance Sheets (Parenthetical) (USD $)
In Millions, except Share data, unless otherwise specified
Mar. 31, 2015
Jun. 30, 2014
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 12.7 $ 12.2
Preferred stock, par value (in usd per share) $ 0.01 $ 0
Preferred stock, shares authorized 50,000,000 0
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value (in usd per share) $ 0.01 $ 0
Common stock, shares authorized 650,000,000 0
Common stock, shares issued 161,100,000 0
Common stock, shares outstanding 160,400,000 0
Treasury stock shares 700,000 0