CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Statement Of Financial Position [Abstract]
Receivables, allowance for doubtful accounts	$ 42.1	$ 44.8
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, authorized	2.0	2.0
Preferred stock, Issued	0	0
Common stock, par value	$ 1.25	$ 1.25
Common stock, Authorized	500.0	500.0
Common stock, Issued	259.0	243.0
Treasury stock, shares	59.2	61.2