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Property, Plant and Equipment (Tables)
3 Months Ended
Mar. 31, 2013
Property, Plant and Equipment [Abstract]  
Components of Property, Plant and Equipment
Property, plant and equipment consist of (table in thousands):
 
March 31,
2013
 
December 31,
2012
Furniture and fixtures
$
203,983

 
$
197,429

Equipment and software
5,442,443

 
5,345,314

Buildings and improvements
1,898,946

 
1,872,559

Land
120,656

 
120,654

Building construction in progress
232,892

 
196,891

 
7,898,920

 
7,732,847

Accumulated depreciation
(4,728,753
)
 
(4,588,299
)
 
$
3,170,167

 
$
3,144,548