Supplemental Balance Sheet Information (Components of Prepaid Expenses and Other) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Components Of Prepaid Expenses And Other Current Assets
Deferred tax assets (Note 7)	$ 273.5	$ 319.0
Prepaid taxes and tax refunds receivable	141.4	192.0
Receivables other than trade	131.9	142.8
Prepaid brochure costs, paper and other literature	112.1	126.9
Healthcare trust assets (Note 12)	26.9	0
Interest-rate swap agreements interest (Notes 8 and 9)	19.5	18.8
Short-term investments	16.5	18.0
Other	110.2	113.4
Prepaid expenses and other	$ 832.0	$ 930.9