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 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%