Quarterly report pursuant to Section 13 or 15(d)

Income Taxes Income Taxes (Details)

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Income Taxes Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Income Tax Disclosure [Abstract]    
Effective Income Tax Rate, Continuing Operations 36.10% 39.50%
Other Tax Expense (Benefit) $ 1.6  
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate 35.00%