Income Taxes 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
Income Tax Disclosure [Abstract]
Effective Income Tax Rate, Continuing Operations	38.60%	39.50%	37.60%	39.50%
Other Tax Expense (Benefit)			$ 1.6
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate			35.00%