Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2009 Foreign Country [Member]	Jun. 30, 2013 Maximum [Member]
Income Tax Contingency [Line Items]
Effective Income Tax Rate Reconciliation, Percent	22.20%	35.50%	6.90%	34.40%
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Amount	$ 20.3		$ 20.3
Tax Adjustments, Settlements, and Unusual Provisions			27.8
Income Tax Reconciliation, Tax Credits, Research			15.2
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%	35.00%	35.00%	35.00%
Unrecognized Tax Benefits, Period Increase (Decrease)			6.5
Unrecognized Tax Benefits	142.6		142.6
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	126.6		126.6
Greater than remote likelihood decrease in gross unrecognized tax benefits within next 12 months						3.6
Interest and penalties recorded					$ 4.6