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Property, Plant and Equipment, net
9 Months Ended
Sep. 30, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment, net
Property, Plant and Equipment, net
The components of property, plant and equipment, net are as follows: 
(in millions)
September 30, 2013
 
December 31, 2012
Land and land improvements
$
10.5

 
$
11.3

Buildings
93.6

 
95.0

Machinery and equipment
736.5

 
791.3

Capital leases
2.0

 
2.0

Construction in process
4.7

 
5.4

Property, plant and equipment, gross
847.3

 
905.0

Less accumulated depreciation
718.1

 
748.0

Property, plant and equipment, net
$
129.2

 
$
157.0


Depreciation expense associated with property, plant and equipment was $8.6 million and $8.7 million for the three months ended September 30, 2013, and 2012, and $26.9 million and $27.3 million for the nine months ended September 30, 2013 and 2012, respectively.