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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Note 6.     Property, Plant and Equipment
Property, plant and equipment consists of the following:
 

(in millions)
  
2022
 
 
2021
 
Land
   $ 20.6     $ 20.7  
Buildings
     68.7       69.5  
Equipment
     377.5       371.5  
Work in progress
     45.7       23.7  
    
 
 
   
 
 
 
Total gross cost
     512.5       485.4  
Less accumulated depreciation and impairment
     (291.6     (271.0
    
 
 
   
 
 
 
Total net book value
   $ 220.9     $ 214.4  
    
 
 
   
 
 
 
Of the total net book value of equipment at December 31, 2022, $0.0 million are in respect of assets held under finance leases (2021 – $0.5 million).
Depreciation charges were $25.7 million, $26.3 million and $24.7 million in 2022, 2021 and 2020, respectively.