Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Income Tax Contingency [Line Items]
Effective Income Tax Rate, Continuing Operations	34.40%	35.80%
Foreign Country [Member]
Income Tax Contingency [Line Items]
Income Taxes Paid	0.9	3.0
Foreign Withholding Taxes Accrued		0.8