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PROPERTY, PLANT AND EQUIPMENT, NET
 3 Months Ended
Mar. 31, 2024
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT, NET PROPERTY, PLANT AND EQUIPMENT, NET
The property, plant and equipment at March 31, 2024 and December 31, 2023 were as follows:
(in millions)March 31,
2024		December 31,
2023
Leasehold improvements$77.8 $91.3 
Equipment151.5 147.6 
Property, plant and equipment, gross229.3 238.9 
Less accumulated depreciation(110.8)(119.9)
Property, plant and equipment, net$118.5 $119.0 
During the three months ended March 31, 2023, the Company incurred $5.7 million of accelerated depreciation of leasehold improvements and equipment in connection with the Company's decision to cease the use of its corporate headquarters in Salt Lake City and transition corporate support operations to its new facility in west Salt Lake City. The Company formally assigned the previous corporate headquarters lease to a third party as of December 31, 2023. See Note 15 for further discussion.
The Company recorded depreciation during the respective periods as follows:
Three months ended
March 31,
(in millions)20242023
Depreciation expense$4.9 $8.7