Supplemental Balance Sheet Information (Components of Prepaid Expenses and Other) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Components Of Prepaid Expenses And Other Current Assets [Line Items]
Deferred tax assets	$ 233.1	$ 273.5
Prepaid taxes and tax refunds receivable	135.2	141.1
Prepaid brochure costs, paper and other literature	101.0	111.8
Receivables other than trade	80.0	131.6
Short-term investments	30.7	16.5
Healthcare trust assets	14.7	26.9
Interest-rate swap agreements (Notes 12 and 13)	0	19.5
Other	112.9	106.1
Prepaid expenses and other	$ 707.6	$ 827.0