Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Accounts Receivable, allowances (in dollars)	$ 16.9	$ 13.5
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	163,175,928	163,175,928
Common stock, shares outstanding	133,628,937	132,769,478
Treasury stock, shares	29,546,991	30,406,450