Consolidated Balance Sheets Parentheticals (Parentheticals) (USD $) In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Cash equivalents	$ 762.9	$ 623.7
Allowances	$ 161.4	$ 174.5
Common stock, par value	$ 0.25	$ 0.25
Common stock, shares authorized	1,500	1,500
Common stock, shares issued	746.7	744.9
Treasury stock	314.5	314.1