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Income Taxes - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Operating Loss Carryforwards [Line Items]        
Effective income tax rate 27.10% 31.80% 27.10% 31.00%
Federal statutory tax rate     35.00% 35.00%
Discrete tax benefit recognized $ 1.2      
Income Taxes Paid     $ 7.1 $ 5.8
Continuing Operations        
Operating Loss Carryforwards [Line Items]        
Liability for uncertain tax positions 0.1   0.1  
Discontinued Operations        
Operating Loss Carryforwards [Line Items]        
Liability for uncertain tax positions $ 1.1   $ 1.1