Income Taxes Level 4 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Mar. 31, 2012
Income Tax Contingency [Line Items]
Effective Income Tax Rate, Continuing Operations	38.70%		40.80%	38.00%	36.30%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority						$ 6.6
Increase (Decrease) in Income Taxes		3.1
Unrecognized Tax Benefits	133.6			133.6
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	42.7			42.7
Unrecognized Tax Benefits, Period Increase (Decrease)				10.4
Unrecognized tax benefits, reduction of accrued interest				$ 1.1