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Property, Plant and Equipment
3 Months Ended
Mar. 31, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, Plant and Equipment

(in millions)
March 31,
2013
 
December 31,
2012
Land, buildings and improvements
$
253

 
$
255

Machinery and equipment
648

 
653

Equipment held for lease or rental
183

 
183

Furniture and fixtures
88

 
90

Construction work in progress
43

 
40

Other
20

 
19

 
1,235

 
1,240

Less accumulated depreciation
761

 
753

Total property, plant and equipment, net
$
474

 
$
487



Depreciation expense of $25 million and $23 million was recognized in the three months ended March 31, 2013 and 2012, respectively.