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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2020
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment Depreciation and amortization are provided for using principally the straight-line method over the estimated useful lives of the assets as follows:
Buildings
20-30 years
Machinery
8-12 years
Other equipment
3-5 years
The components of property, plant and equipment at December 31 were as follows:
 20202019
Land$2.3 $2.2 
Buildings87.1 84.7 
Machinery and other equipment223.3 218.1 
Computer equipment117.8 96.4 
Software80.9 73.3 
 511.4 474.7 
Accumulated depreciation(370.8)(334.8)
 $140.6 $139.9