CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - $ / shares shares in Millions	Mar. 31, 2016	Dec. 31, 2015
Balance Sheet Related Disclosures [Abstract]
Preferred Stock, Shares Authorized	3.0	3.0
Preferred Stock, Shares Issued	0.0	0.0
Preferred Stock, Shares Outstanding	0.0	0.0
Common Stock, Par or Stated Value Per Share	$ 0.25	$ 0.25
Common Stock, Shares Authorized	100.0	100.0
Common Stock, Shares, Issued	73.3	72.4
Common Stock, Shares, Outstanding	73.1	72.3
Treasury Stock, Shares	0.2	0.1