Supplemental Balance Sheet Information (Components of Prepaid Expenses and Other) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Components Of Prepaid Expenses And Other Current Assets [Line Items]
Deferred tax assets	$ 245.6	$ 233.6
Prepaid taxes and tax refunds receivable	140.7	145.9
Prepaid brochure costs, paper and other literature	82.2	95.7
Receivables other than trade	73.0	86.6
Short-term investments	30.0	31.7
Other	117.6	95.8
Prepaid expenses and other	$ 689.1	$ 689.3