Inventories consisted of the following components (dollars in millions):

 

     December 31,
2016
     December 31,
2015
 

Purchased parts and raw materials

   $ 57.0      $ 69.5  

Work in progress

     4.5        5.1  

Service parts

     43.3        45.8  

Finished goods

     20.8        21.0  
  

 

 

    

 

 

 

Total inventories

   $ 125.6      $ 141.4