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Supplemental Balance Sheet Information (Components of Prepaid Expenses and Other) (Details) (USD $)
In Millions
Jun. 30, 2011
Dec. 31, 2010
Components Of Prepaid Expenses And Other Current Assets [Line Items]    
Deferred tax assets $ 348.2 $ 347.4
Receivables other than trade 156.0 145.9
Prepaid taxes and tax refunds receivable 271.7 247.1
Prepaid brochure costs, paper and other literature 133.8 121.4
Short-term investments 39.5 17.1
Property, plant and equipment held for sale 12.8 12.8
Other 142.2 133.5
Prepaid expenses and other $ 1,104.2 $ 1,025.2