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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2011
Property, Plant and Equipment

I.       Property, Plant and Equipment

 

Property, plant and equipment consist of (table in thousands):

 

 December 31, December 31,
2011  2010  
Furniture and fixtures $180,800 $156,466
Equipment  4,680,118  4,117,984
Buildings and improvements  1,748,214  1,580,597
Land  117,513  115,899
Building construction in progress  146,650  100,865
  6,873,295  6,071,811
Accumulated depreciation  (4,040,146)  (3,543,379)
 $2,833,149 $2,528,432

Depreciation expense was $727.9 million, $595.3 million and $565.5 million in 2011, 2010 and 2009, respectively. Building construction in progress at December 31, 2011 includes $65.8 million for facilities not yet placed in service that we are holding for future use.