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PROPERTY, PLANT AND EQUIPMENT
12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT
PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment – net consist of the following (in millions):
 
December 31,
 
2018
 
2017
Property
$
48.2

 
$
43.3

Plant
176.4

 
144.7

Equipment
489.0

 
479.3

Property, plant and equipment – gross
713.6

 
667.3

Less: Accumulated depreciation
(368.0
)
 
(356.3
)
Property, plant and equipment – net
$
345.6

 
$
311.0



Depreciation expense for the years ended December 31, 2018, 2017 and 2016, was $53.3 million, $59.9 million and $65.5 million, respectively.