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Property, Plant and Equipment, Net
 12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment, Net PROPERTY, PLANT AND EQUIPMENT, NET
December 31,
(in millions)20212020
Leasehold improvements38.0 35.7 
Equipment112.4 117.9 
Property, plant and equipment, gross150.4 153.6 
Less accumulated depreciation(106.9)(112.9)
Property, plant and equipment, net$43.5 $40.7 
During the year ended December 31, 2021, the Company completed the sales of Myriad RBM, Inc. and the Myriad Autoimmune business, which resulted in the disposition of $3.1 million of property, plant and equipment. See Note 16 for additional information regarding these divestitures.
Year Ended December 31,Six-month Transition Period Ended December 31,Years Ended June 30,
(in millions)2021202020202019
Depreciation expense$12.1 $5.0 $11.0 $13.7