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Property, Plant and Equipment (Notes)
12 Months Ended
Dec. 31, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
Property, Plant and Equipment
The components of property, plant and equipment follow:
 
 
Useful Lives
 
As of December 31,
(MILLIONS OF DOLLARS)
 
(Years)
 
2014

 
2013

Land
 
 
$
36

 
$
36

Buildings
 
33 1/3 - 50
 
918

 
883

Machinery, equipment and fixtures
 
3 - 20
 
1,342

 
1,205

Construction-in-progress
 
 
167

 
199

 
 
 
2,463

 
2,323

Less: Accumulated depreciation
 
 
1,145

 
1,028

Property, plant and equipment
 
 
$
1,318

 
$
1,295


Depreciation expense was $141 million in 2014, $146 million in 2013 and $133 million in 2012.