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Property, Plant and Equipment, net (Tables)
 12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment The following table provides details on the useful lives and proportion of our machinery and equipment (“M&E”) in each useful life category.
Percent of
M&E Cost		Depreciable Life in YearsTypes of Assets
23
5 to 10
Production control system equipment and hardware, laboratory testing equipment
1115Control systems, instrumentation, metering equipment
4920Production vessels and kilns, storage tanks, piping
7
25 to 30
Blending equipment, storage tanks, piping, shipping equipment and platforms, safety equipment
340Machinery & equipment support structures and foundations
7VariousVarious
Property, plant, and equipment, net consist of the following:
December 31,
In millions20222021
Machinery and equipment$1,162.7 $1,113.3 
Buildings and leasehold improvements200.9 177.2 
Land and land improvements24.9 20.4 
Construction in progress 120.9 64.4 
  Total cost$1,509.4 $1,375.3 
Less: accumulated depreciation(710.8)(655.6)
  Property, plant, and equipment, net (1)
$798.6 $719.7 
_______________
(1) This includes finance leases related to machinery and equipment of $94.3 million and $94.5 million, and net carrying value of $25.2 million and $27.7 million; buildings and leasehold improvements of $39.6 million and $29.0 million, and net carrying value of $34.9 million and $26.2 million; and construction in progress of zero and zero at December 31, 2022 and 2021, respectively. Amortization expense associated with these finance leases is included within depreciation expense. The payments remaining under these finance lease obligations are included within Note 13.