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Inventories (Tables)
6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Major classes of inventories
Major classes of inventories are summarized as follows:
June 30, 2020December 31, 2019
Finished goods$181.9  $157.4  
Service parts167.4  175.4  
Raw materials and work in process164.1  133.7  
Total inventories$513.4  $466.5