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Property, Plant And Equipment
 12 Months Ended
Dec. 31, 2015
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment consisted of the following: 
 
December 31,
(In millions)
2015
 
2014
Land and land improvements
$
78.4

 
$
83.8

Buildings
385.6

 
410.6

Machinery and equipment
1,620.8

 
1,530.5

Construction in process
178.8

 
266.9

 
2,263.6

 
2,291.8

Accumulated depreciation
(892.1
)
 
(833.4
)
Property, plant and equipment, net
$
1,371.5

 
$
1,458.4


Depreciation expense was $179.5, million, $170.8 million and $156.0 million in 2015, 2014 and 2013, respectively. The amount of interest cost capitalized was $1.6 million, $0.9 million and $0.7 million in 2015, 2014 and 2013, respectively.