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Inventories (Tables)
9 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
Major classes of inventories
Major classes of inventories are summarized as follows:
September 30, 2021December 31, 2020
Finished goods$247.7 $204.7 
Service parts171.7 169.0 
Raw materials and work in process205.4 124.5 
Total inventories$624.8 $498.2