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Property, Plant and Equipment, Net (Tables)
3 Months Ended
Mar. 31, 2021
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment, Net
(in millions)March 31,
2021
December 31,
2020
Leasehold improvements$36.8 $35.7 
Equipment119.0 117.9 
Property, plant and equipment, gross155.8 153.6 
Less accumulated depreciation(110.7)(112.9)
Property, plant and equipment, net$45.1 $40.7 

Three Months Ended
March 31,
(in millions)20212020
Depreciation expense$2.9 $2.6