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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]  
Future Commitments under Non-Cancelable Operating Leases

Future commitments under non-cancelable operating leases are as follows:

 

(in millions)

      

2016

   $ 3.8   

2017

     3.3   

2018

     2.6   

2019

     1.4   

2020

     1.0   

Thereafter

     4.2   
  

 

 

 
   $ 16.3