Supplemental Balance Sheet Information (Components of Prepaid Expenses and Other) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Components Of Prepaid Expenses And Other Current Assets [Line Items]
Deferred tax assets	$ 326.2	$ 319.0
Prepaid taxes and tax refunds receivable	178.9	192.0
Prepaid brochure costs, paper and other literature	112.2	126.9
Receivables other than trade	110.5	142.8
Healthcare trust assets	40.3	0
Short-term investments	20.5	18.0
Derivative Instruments and Hedges, Assets	14.5	18.8
Other	114.7	113.4
Prepaid expenses and other	$ 917.8	$ 930.9