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Supplementary Data to Statements of Operations (Tables)
 12 Months Ended
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Summary of Supplementary Data to Statements of Operations
     Year Ended December 31,  
     2017      2016      2015  

Other Expense, Net

         

Asset impairment

    $ —        $ 10.4      $ 23.0  

Environmental reserve

      —          5.9        —    

Foreign currency translation expense (income)

      7.3        (3.4 )       4.8  
  

 

 

     

 

 

     

 

 

  

Total other expense, net

    $ 7.3      $ 12.9      $ 27.8