Income Taxes Unrecognized Tax Positions (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Income Tax Contingency [Line Items]
Unrecognized tax benefits next fiscal year	$ 9.6
Unrecognized Tax Benefits, Beginning Of Year	101.5	89.5
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	3.3	0
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	(7.1)	(3.8)
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	12.8	25.2
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities	(0.2)	(0.8)
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	(6.5)	(8.6)
Unrecognized Tax Benefits, End Of Year	103.3	101.5
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	97.9	97.0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	11.7	11.2
Unrecognized Tax Positions, Accrued Interest and Penalties During Period	$ 0.7	$ 4.0