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Special Charges (Table) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2017
Dec. 31, 2016
Termination benefit costs   $ 1.6  
Payments for one-time termination benefits   (0.9)  
Restructuring liability $ 6.2 6.2 $ 5.5
Contract Reduction [Member]      
Termination benefit costs   0.1  
Payments for one-time termination benefits   (0.5)  
Restructuring liability 5.0 5.0 5.4
Other Restructuring [Member]      
Termination benefit costs 0.7 1.5  
Payments for one-time termination benefits   (0.4)  
Restructuring liability $ 1.2 $ 1.2 $ 0.1