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Properties (Tables)
 12 Months Ended
Dec. 31, 2020
Property, Plant and Equipment [Abstract]  
Components of Properties
Properties comprise the following:
As of December 31,20202019
Land$2.3 $2.3 
Buildings63.5 63.5 
Machinery and office equipment466.7 521.5 
Internal-use software171.2 161.8 
Rental equipment23.3 34.9 
Total properties$727.0 $784.0