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Property, Plant and Equipment, net
3 Months Ended
Mar. 31, 2012
Property, Plant and Equipment, net [Abstract]  
Property, Plant and Equipment, net
4. Property, Plant and Equipment, net

   
March 31, 2012
  
December 31, 2011
 
Land
 $63,281  $54,113 
Buildings and improvements
  607,541   586,538 
Machinery, equipment and other
  2,113,474   2,033,926 
    2,784,296   2,674,577 
Accumulated depreciation
  (1,715,350)  (1,673,707)
Total
 $1,068,946  $1,000,870