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Income Taxes (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Income Tax Disclosure [Abstract]        
U.S. statutory rate     35.00%  
Effective tax rate (0.90%) (4.60%) (0.90%) (1.00%)
Unrecognized tax benefits $ 3.7   $ 3.7  
Unrecognized tax benefits that would have a favorable impact on effective tax rate $ 2.7   $ 2.7