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Property, Plant and Equipment
9 Months Ended
Sep. 30, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, Plant and Equipment

(in millions)
September 30,
2012
 
December 31,
2011             

Land, buildings and improvements
$
247

 
$
237

Machinery and equipment
639

 
598

Equipment held for lease or rental
173

 
152

Furniture and fixtures
92

 
86

Construction work in progress
39

 
53

Other
24

 
21

 
1,214

 
1,147

Less accumulated depreciation
750

 
684

Total property, plant and equipment, net
$
464

 
$
463



Depreciation expense of $24 million and $68 million was recognized in the three and nine month periods ended September 30, 2012, respectively, and $25 million and $72 million for the three and nine month periods ended September 30, 2011, respectively.