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Properties (Tables)
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Schedule of Components of Properties
Properties comprise the following:
 
As of December 31,
  
2021
     2020  
Land
  
$
—  
 
   $ 2.3  
Buildings
  
 
0.3
 
     63.5  
Machinery and office equipment
  
 
267.8
 
     466.7  
Internal-use
software
  
 
186.0
 
     171.2  
Rental equipment
  
 
13.9
 
     23.3  
  
 
 
    
 
 
 
Total properties
  
$
468.0
 
   $ 727.0