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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, Plant and Equipment
 
December 31,
(in millions)
2012
 
2011
Land, buildings and improvements
$
255

 
$
237

Machinery and equipment
653

 
598

Equipment held for lease or rental
183

 
152

Furniture and fixtures
90

 
86

Construction work in progress
40

 
53

Other
19

 
21

 
1,240

 
1,147

Less accumulated depreciation
753

 
684

Total property, plant and equipment, net
$
487

 
$
463


Depreciation expense was $94 million, $93 million, and $63 million for 2012, 2011, and 2010, respectively.